A ion pump vacuum monitored vacuum interrupter uses the voltage already applied to the interrupter to power the vacuum ion pump. A porcelain tube in fluid communication with the interrupter vacuum bottle provides high voltage isolation between the vacuum interrupter bottle and the vacuum ion pump to protect the pump. When connected to the porcelain tube, the ion pump maintains the purity of the vacuum medium inside the vacuum interrupter bottle, while failure of the ion pump indicates a vacuum failure. Failure of the ion pump triggers response actions, such as activating a visual indicator, activating other alarms, disabling the switch until the vacuum interrupter is repaired, and entering a maintenance order. This allows the life of the vacuum interrupter to be significantly increased while simultaneously improving the reliability and safety of operating vacuum interrupters.
A line-of-sight quick-alignment linkage for a three-phase electric disconnect switch interconnects a drive pipe, actuator arm, and a calibration mechanism of the switch. The linkage includes a quick-alignment straight edge configured to be aligned with the line-of-sight from the pivot point of the drive pipe to the actuator arm when the drive pipe is in the fully closed drive pipe position. The calibration mechanism, the actuator arm, and other phase operating levers of the other phases are then set to their fully closed positions to calibrate the linkage. The quick-alignment straight edge may be positioned on the calibration mechanism along with a visual indicator parallel to quick-alignment straight edge.
An adaptive electric power capacitor system includes a number of normally in-service capacitor modules and a number of normally out-of-service reserve capacitor modules. Each capacitor module includes a controller-sensor and a switch allowing the capacitor to be independently switched into or out of service while only momentarily taking the entire capacitor bank out of service during the switching operation. For example, a failed in-service capacitor module may be switched out of service, while a reserve capacitor module is switched into service to replace the failed capacitor module. In addition to providing built-in reserve capacitors, the adaptive capacitor system manages the capacitors for the electric phases taking into account unbalanced reactive power loads among the electric power phases to mitigate the unbalanced reactive power state.
A collimated beam alignment system for aligning a receiving insulator, a guide insulator and a drive insulator of an electric power disconnect switch. The collimated beam alignment system includes an emitter stage temporarily attached to the receiving insulator, an aperture stage including an alignment aperture temporarily attached to the receiving insulator, and a target stage including an alignment target temporarily attached to the drive insulator. With the drive insulator rotated to a switch-closed position, proper alignment of the receiving insulator, the guide insulator and the drive insulator is indicated by a visible spectrum collimated beam from the emitter stage passing through the alignment aperture and illuminating the alignment target. Once the insulators are aligned, the alignment system is removed and the live components of the disconnect switch are attaches to the insulators.
G02B 5/00 - Éléments optiques autres que les lentilles
G01B 11/26 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer des angles ou des cônesDispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour tester l'alignement des axes
An alternative gas current pause circuit interrupter with an internally switched resistor - varistor impedance. The van stor limits the voltage rise across the main contactor limiting restrikes, while the resistor limits the current through the interrupter. The values of the resistor and varistor are selected, to creates a current pause in the current. In a representative embodiment, the current pause performance is less than 10% of the rated line current for at. least 15% of the half-cycle period allowing a plain break butt impedance contactor to be utilized without excessive arcing. For another embodiment the current pause performance is less than 5% of the rated line current for at least 20% of the half-cycle period. SF6 free alternative gas current pause circuit interrupters using a 60% CO2 blend can achieve similar or improved transient voltage performance compared to similarly sized conventional SF6 gas interrupters operating at the same voltage rating.
H01R 13/713 - Association structurelle avec des composants électriques incorporés avec interrupteur incorporé l'interrupteur étant un interrupteur de sécurité
H01H 1/06 - Contacts caractérisés par la forme ou la structure de la surface de contact, p. ex. striée
H01H 33/12 - Contacts auxiliaires sur lesquels l'arc est transféré des contacts principaux
H02H 1/00 - Détails de circuits de protection de sécurité
An alternative gas current pause circuit interrupter with an internally switched resistor-varistor impedance. The varistor limits the voltage rise across the main contactor limiting restrikes, while the resistor limits the current through the interrupter. The values of the resistor and varistor are selected to creates a current pause in the current. In a representative embodiment, the current pause performance is less than 10% of the rated line current for at least 15% of the half-cycle period allowing a plain break butt impedance contactor to be utilized without excessive arcing. For another embodiment the current pause performance is less than 5% of the rated line current for at least 20% of the half-cycle period. SF6 free alternative gas current pause circuit interrupters using a 60% CO2 blend can achieve similar or improved transient voltage performance compared to similarly sized conventional SF6 gas interrupters operating at the same voltage rating.
H01H 33/64 - Interrupteurs dans lesquels les moyens de prévention ou d'extinction des arcs ne comportent pas de moyen séparé destiné à obtenir ou accroître l'écoulement du fluide extincteur d'arc dans lesquels la coupure s'opère dans un gaz
An electric power disconnect switch and associated vacuum circuit interrupter with a modular, removable contactor unit housing a modular, removable vacuum bottle unit. The vacuum circuit interrupter may be mounted on a bracket adjacent to the jaws of a disconnect switch, where the blade of the disconnect switch moves the actuator arm of the vacuum circuit interrupter during operation of the disconnect switch. A technician carries a spare contactor unit to the disconnect switch location, where the technician removes and replaces the contactor unit. The vacuum circuit interrupter includes a separable connection between the drive unit housing and a contactor unit housing, which allows the contactor unit to be rotated with respect to the drive unit to unscrew the connecting rod of the contactor unit from the drive shaft of the drive unit. A replacement contactor unit is then installed and the circuit interrupter is returned to service.
A calibration joint for a three-phase electric disconnect switch includes a linkage pipe extending through a lock ring, which includes an axial guide shaft, a threaded shaft, and a self-piercing set screw securing the lock ring to the linkage pipe. The linkage pipe also extends through a clevis housing, which includes an axial joiner shaft and a clevis bracket securing the clevis housing to an operating lever of the disconnect switch. An adjustment rod extending through the axial guide shaft of the lock ring, through the axial joiner shaft of the clevis housing, and engaging with lock nuts allows axial adjustment of the clevis housing with respect to the lock ring, and thus with respect to the linkage pipe. This, in turn, allows fine adjustment of the blade and jaws of an associated phase switch with respect to the switch actuator independent of the other phase switches.
H01H 3/46 - Mécanismes-moteurs, c.-à-d. pour transmettre la force motrice aux contacts utilisant une liaison par tige ou levier, p. ex. une genouillère
H01H 9/26 - Mécanismes d'interverrouillage, verrouillage ou accrochage pour interverrouillage de plusieurs interrupteurs
12.
Calibration joint for a three-phase electric disconnect switch
A calibration joint for a three-phase electric disconnect switch includes a linkage pipe extending through a lock ring, which includes an axial guide shaft, a threaded shaft, and a self-piercing set screw securing the lock ring to the linkage pipe. The linkage pipe also extends through a clevis housing, which includes an axial joiner shaft and a clevis bracket securing the clevis housing to an operating lever of the disconnect switch. An adjustment rod extending through the axial guide shaft of the lock ring, through the axial joiner shaft of the clevis housing, and engaging with lock nuts allows axial adjustment of the clevis housing with respect to the lock ring, and thus with respect to the linkage pipe. This, in turn, allows fine adjustment of the blade and jaws of an associated phase switch with respect to the switch actuator independent of the other phase switches.
A quick-alignment linkage for a three-phase electric disconnect switch includes a drive pipe, a linkage pipe, and a linkage interconnecting the drive pipe and the linkage pipe. The linkage includes quick-alignment straight edge configured to be parallel to the centerline of the drive pipe when the drive pipe is in the fully closed drive pipe position. The quick-alignment straight edge is typically positioned adjacent to a calibration mechanism of the linkage when the drive pipe is in the fully closed drive pipe position. The drive pipe may also include a flat surface with an alignment indicator configured to be parallel to the quick-alignment straight edge when the drive pipe is in the fully closed drive pipe position. The alignment indicator is also positioned adjacent to the calibration mechanism and its quick-alignment straight edge when the drive pipe is in the fully closed drive pipe position.
H01H 3/46 - Mécanismes-moteurs, c.-à-d. pour transmettre la force motrice aux contacts utilisant une liaison par tige ou levier, p. ex. une genouillère
H01H 9/26 - Mécanismes d'interverrouillage, verrouillage ou accrochage pour interverrouillage de plusieurs interrupteurs
14.
QUICK-SET CLEVIS JOINT FOR A THREE-PHASE ELECTRIC DISCONNECT SWITCH LINKAGE
A quick-set clevis joint for a three-phase electric disconnect switch linkage includes a clevis housing having a spring chamber axially aligned and disposed around a linkage pipe extending through the clevis housing. A spring positioned within the spring chamber provides play in the linkage. First and second thrust disks compress the spring in a first axial direction with the first thrust disk pushed against a first spring chamber end wall when the linkage pipe moves in the first axial direction while the clevis housing is blocked from moving in the first axial direction. In addition. the first and second thrust disks compress the spring in the second axial direction with the second thrust disk pushed against the second spring chamber end wall when the linkage pipe moves in the second axial direction while the clevis housing is blocked from moving in the second axial direction.
H01H 3/46 - Mécanismes-moteurs, c.-à-d. pour transmettre la force motrice aux contacts utilisant une liaison par tige ou levier, p. ex. une genouillère
H01H 9/26 - Mécanismes d'interverrouillage, verrouillage ou accrochage pour interverrouillage de plusieurs interrupteurs
15.
Quick-alignment linkage for a three-phase electric disconnect switch
A quick-alignment linkage for a three-phase electric disconnect switch includes a drive pipe, a linkage pipe, and a linkage interconnecting the drive pipe and the linkage pipe. The linkage includes quick-alignment straight edge configured to be parallel to the centerline of the drive pipe when the drive pipe is in the fully closed drive pipe position. The quick-alignment straight edge is typically positioned adjacent to a calibration mechanism of the linkage when the drive pipe is in the fully closed drive pipe position. The drive pipe may also include a flat surface with an alignment indicator configured to be parallel to the quick-alignment straight edge when the drive pipe is in the fully closed drive pipe position. The alignment indicator is also positioned adjacent to the calibration mechanism and its quick-alignment straight edge when the drive pipe is in the fully closed drive pipe position.
A quick-set clevis joint for a three-phase electric disconnect switch linkage includes a clevis housing having a spring chamber axially aligned and disposed around a linkage pipe extending through the clevis housing. A spring positioned within the spring chamber provides play in the linkage. First and second thrust disks compress the spring in a first axial direction with the first thrust disk pushed against a first spring chamber end wall when the linkage pipe moves in the first axial direction while the clevis housing is blocked from moving in the first axial direction. In addition. the first and second thrust disks compress the spring in the second axial direction with the second thrust disk pushed against the second spring chamber end wall when the linkage pipe moves in the second axial direction while the clevis housing is blocked from moving in the second axial direction.
H01H 3/30 - Dispositions comportant une énergie à l'intérieur de l'interrupteur pour actionner le mécanisme d'entraînement utilisant un moteur à ressort
Embodiments of the present invention include a test-boost electric power recloser that limits the duration of the test current imposed on the power line to less than two electric power cycles, and preferably less than one electric power cycle, when attempting to reclose into a fault. The test-boost recloser sends a test pulse causing a non-latching close followed by a boost pulse causing a latching close if waveform analysis based on the test close indicates that the fault has likely cleared. The test-boost approach can typically be implemented through a software and calibration upgrade to a conventional single-coil recloser, accomplishing results comparable to a dual-actuator recloser at a much lower cost. The recloser may perform iterative and feedback learning feedback processes to automatically improve its operation over time in response to measured fault and non-fault conditions and its success in predicting whether faults have cleared.
H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p. ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits
H02H 1/00 - Détails de circuits de protection de sécurité
H02H 3/06 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion Détails avec reconnexion automatique
H02H 3/07 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion Détails avec reconnexion automatique et avec déconnexion permanente après un nombre prédéterminé de cycles de reconnexion
19.
Time-admittance fault detection and isolation system
A time-admittance fault detection and isolation system includes a series of time-admittance switches spaced apart along the power line, each including a respective time-admittance function. Together, the time-admittance functions define a cascade trip sequence in a downstream-to-upstream direction, which autonomously causes a closest upstream time-admittance switch to a fault to trip to isolate the fault on an upstream side of the fault without communication with the time-admittance switches. The fault detection and isolation system may also include a radio communicating a trip signal from the closest upstream time-admittance switch to the fault to a closest downstream time-admittance switch to the fault. The trip signal causes the closest downstream time-admittance switch to the fault to trip to isolate the fault on a downstream side of the fault. A tie switch closes to back-feed a portion of the electric power line downstream from the closest downstream time-admittance switch to the fault.
H02H 7/22 - Circuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour appareillage de distribution, p. ex. système de barre omnibusCircuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour dispositifs de commutation
H02H 1/00 - Détails de circuits de protection de sécurité
20.
High voltage electric power switch with carbon arcing electrodes and carbon dioxide dielectric gas
A high voltage electric switch includes contacts with graphite carbon electrode forming the arc gap. In addition, the carbon contacts are located in a chamber containing at least 60% carbon dioxide (CO2) as a dielectric gas to achieve improved arc interrupting performance. In conventional switches, the metallic contacts introduce metallic vapors into the arc plasma that inhibits the ability of the dielectric gas to interrupt high voltage, high current arcs. As the element carbon is inherently present in CO2 gas, the addition of vapors from the carbon electrodes into the dielectric gas does not significantly interfere with the dielectric arc-interrupting performance of the CO2 dielectric gas.
H01H 33/82 - Interrupteurs comportant des moyens séparés pour diriger, obtenir ou augmenter l'écoulement du fluide extincteur d'arc l'écoulement du fluide extincteur d'arc à partir d'une source sous pression est contrôlé par une soupape le fluide étant de l'air ou un gaz
21.
Non-three-phase fault isolation and restoration systems
A smart switch allows distributed generators to “ride through” non-three-phase faults by very quickly detecting a non-three-phase phase fault, locating the fault, identifying the “responsive sectionalizer switches” that will be involved in clearing or isolating the fault, and selecting one of the responsive sectionalizer switches to direct back-feed tie switch operations. The responsive sectionalizer switches trip only the faulted phase(s), and the selected sectionalizer switch instructs a back-feed tie switch to close to back-feed the distributed generators prior to conducting the typical fault response operation. This typically occurs within about three cycles, and is completed before the normal fault clearing and isolation procedures, which momentarily disconnect all three phases to the distributed generators from the normally connected feeder breaker. The looped connection to an alternate feeder breaker during these operations allows the distributed generators to “ride through” the normal fault clearing and isolation procedures.
H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif
H02J 13/00 - Circuits pour pourvoir à l'indication à distance des conditions d'un réseau, p. ex. un enregistrement instantané des conditions d'ouverture ou de fermeture de chaque sectionneur du réseauCircuits pour pourvoir à la commande à distance des moyens de commutation dans un réseau de distribution d'énergie, p. ex. mise en ou hors circuit de consommateurs de courant par l'utilisation de signaux d'impulsion codés transmis par le réseau
H01H 9/16 - Indicateurs de position, p. ex. "marche" ou "arrêt"
H02H 3/04 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion Détails avec signalisation ou supervision additionnée à la déconnexion, p. ex. pour indiquer que l'appareil de protection a fonctionné
22.
NON-THREE-PHASE FAULT ISOLATION AND RESTORATION SYSTEMS
A smart switch allows distributed generators to "ride through" non-three-phase faults by very quickly detecting a non-three-phase phase fault, locating the fault, identifying the "responsive sectionalizer switches" that will be involved in clearing or isolating the fault, and selecting one of the responsive sectionalizer switches to direct back-feed tie switch operations. The responsive sectionalizer switches trip only the faulted phase(s), and the selected sectionalizer switch instructs a back-feed tie switch to close to back-feed the distributed generators prior to conducting the typical fault response operation. This typically occurs within about three cycles, and is completed before the normal fault clearing and isolation procedures, which momentarily disconnect all three phases to the distributed generators from the normally connected feeder breaker. The looped connection to an alternate feeder breaker during these operations allows the distributed generators to "ride through" the normal fault clearing and isolation procedures.
G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p. ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits
G01R 21/00 - Dispositions pour procéder aux mesures de la puissance ou du facteur de puissance
G01R 31/00 - Dispositions pour tester les propriétés électriquesDispositions pour la localisation des pannes électriquesDispositions pour tests électriques caractérisées par ce qui est testé, non prévues ailleurs
H02H 7/00 - Circuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail
23.
NON-THREE-PHASE FAULT ISOLATION AND RESTORATION SYSTEMS
A smart switch allows distributed generators to "ride through" non-three-phase faults by very quickly detecting a non-three-phase phase fault, locating the fault, identifying the "responsive sectionalizer switches" that will be involved in clearing or isolating the fault, and selecting one of the responsive sectionalizer switches to direct back-feed tie switch operations. The responsive sectionalizer switches trip only the faulted phase(s), and the selected scctionalizer switch instructs a back-feed tie switch to close to back-feed the distributed generators prior to conducting the typical fault response operation. This typically occurs within about three cycles, and is completed before the normal fault clearing and isolation procedures, which momentarily disconnect all three phases to the distributed generators from the normally connected feeder breaker. The looped connection to an alternate feeder breaker during these operations allows the distributed generators to "ride through" the normal fault clearing and isolation procedures.
H02H 1/00 - Détails de circuits de protection de sécurité
H02H 1/04 - Dispositions pour prévenir la réponse à des conditions transitoires anormales, p. ex. à la foudre
H02H 3/34 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à la différence de tensions ou de courantsCircuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à un angle de déphasage entre tensions ou courants comprenant la comparaison des valeurs de tension ou de courant en des points correspondants des différents conducteurs d'un même système, p. ex. de courants dans des conducteurs d'aller et retour d'un système triphasé
H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p. ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits
An instrumented electric power voltage arrester includes a temperature sensor, wireless transmitter, and a visual over-temperature indicator. A disk shaped module, a replacement varister block, or a dummy block containing the sensor/transmitter is placed between varister blocks inside the arrester housing. A strap-on module is attached to the outside of the arrester housing. The sensor/transmitter utilizes a harvesting power supply that draws electric power for the electronics from the power line protected by the arrester. An ambient temperature sensor may be utilized to enhance accuracy. The temperature sensor/transmitter typically sends arrester monitoring data wirelessly to an RTU or handheld unit located outside the arrester, which relays the monitoring data to an operations control center that scheduled replacement of the arrester based on the monitoring data. A surge counter keeps track of the number of equipment and lightning related temperature surges experienced by the arrester.
A high voltage electric switch includes contacts with graphite carbon electrode forming the arc gap. In addition, the carbon contacts are located in a chamber containing at least 60% carbon dioxide (C02) as a dielectric gas to achieve improved arc interrupting performance. In conventional switches, the metallic contacts introduce metallic vapors into the arc plasma that inhibits the ability of the dielectric gas to interrupt high voltage, high current arcs. As the element carbon is inherently present in C02 gas, the addition of vapors from the carbon electrodes into the dielectric gas does not significantly interfere with the dielectric arc-interrupting performance of the C02 dielectric gas.
H01H 1/02 - Contacts caractérisés par leur matériau
H01H 33/04 - Moyens pour éteindre ou empêcher des arcs entre organes traversés par le courant
H01H 33/74 - Interrupteurs comportant des moyens séparés pour diriger, obtenir ou augmenter l'écoulement du fluide extincteur d'arc comportant des organes fixes pour diriger l'écoulement du fluide extincteur d'arc, p. ex. chambre d'arc dans lesquels la coupure s'opère dans un gaz
27.
High voltage electric power switch with carbon arcing electrodes and carbon dioxide dielectric gas
A high voltage electric switch includes contacts with graphite carbon electrode forming the arc gap. In addition, the carbon contacts are located in a chamber containing at least 60% carbon dioxide (CO2) as a dielectric gas to achieve improved arc interrupting performance. In conventional switches, the metallic contacts introduce metallic vapors into the arc plasma that inhibits the ability of the dielectric gas to interrupt high voltage, high current arcs. As the element carbon is inherently present in CO2 gas, the addition of vapors from the carbon electrodes into the dielectric gas does not significantly interfere with the dielectric arc-interrupting performance of the CO2 dielectric gas.
H01H 33/82 - Interrupteurs comportant des moyens séparés pour diriger, obtenir ou augmenter l'écoulement du fluide extincteur d'arc l'écoulement du fluide extincteur d'arc à partir d'une source sous pression est contrôlé par une soupape le fluide étant de l'air ou un gaz
28.
Turned-out line taps for high voltage electric power switch
A high voltage electric power switch with an anti-flashover nozzle that suppresses the likelihood of a flashover occurring between switch components other than the switch contactors, such as the nozzle casing around the first contactor (e.g., female or socket) and the casing around the second contactor (e.g., male or pin) during an opening stroke of the contactors. The anti-flashover features include a corona ring positioned at the proximal end of the nozzle casing and a nozzle clamp ring positioned to the distal side of a nozzle casing abutment that mates with a nozzle receiver. The conventional nozzle includes a nib-shaped proximal end of the nozzle casing carrying a clamp ring positioned on the proximal side of the abutment. The new nozzle design reduces the high level of electric field stress created by the conventional nozzle casing to suppress the likelihood of a flashover occurring between the contactor casings.
H01H 33/24 - Moyens pour empêcher une décharge sur des parties ne transportant pas de courant, p. ex. usage d'anneaux anti-corona
H01H 33/64 - Interrupteurs dans lesquels les moyens de prévention ou d'extinction des arcs ne comportent pas de moyen séparé destiné à obtenir ou accroître l'écoulement du fluide extincteur d'arc dans lesquels la coupure s'opère dans un gaz
32.
Combined in-line DC and AC current sensor for high voltage electric power lines
The present invention may be embodied in an in-line high voltage electric power line monitor including a DC current sensor, an AC current sensor, an energy harvesting power supply, and a communication device. The in-line power line monitor includes a bus bar that connects in series with the monitored power line. For example, the in-line power line monitor may be connected at the junction point between the monitored power line and a support structure, such a sectionalizing switch that supports the monitor positioned between the switch and the power line. A pair of DC current measurement pickups are spaced apart on the bus bar and operatively connected to the microprocessor. The in-line power line monitor also includes an AC current sensor coil and an energy harvesting device (e.g., inductive coil) that surround the bus bar. The AC current sensor coil and the power supply coil are positioned adjacent to, but spaced apart from, the bus bar. An electronics board carries a pair of foil patch antenna elements positioned adjacent to the outer perimeter of the electronics board. Although the in-line power line monitor does not require a separate power supply, the electronics board may carry a backup battery if desired.
G01R 19/25 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe utilisant une méthode de mesure numérique
G01R 21/06 - Dispositions pour procéder aux mesures de la puissance ou du facteur de puissance par mesure du courant et de la tension
G01R 15/14 - Adaptations fournissant une isolation en tension ou en courant, p. ex. adaptations pour les réseaux à haute tension ou à courant fort
G01R 21/133 - Dispositions pour procéder aux mesures de la puissance ou du facteur de puissance en utilisant des techniques numériques
H05K 9/00 - Blindage d'appareils ou de composants contre les champs électriques ou magnétiques
G06F 1/26 - Alimentation en énergie électrique, p. ex. régulation à cet effet
G01R 15/18 - Adaptations fournissant une isolation en tension ou en courant, p. ex. adaptations pour les réseaux à haute tension ou à courant fort utilisant des dispositifs inductifs, p. ex. des transformateurs
G01R 15/16 - Adaptations fournissant une isolation en tension ou en courant, p. ex. adaptations pour les réseaux à haute tension ou à courant fort utilisant des dispositifs capacitifs
33.
High voltage capacitor with internal capacitor pack voltage and current sensors
A high voltage capacitor includes multiple capacitor packs housed in a canister. A capacitor pack status monitor includes a current sensor measuring an electric current through an associated capacitor pack and a radio transmitting a first signal representative of the electric current through a selected capacitor pack. The monitor also includes a voltage sensor measuring an electric voltage across the associated capacitor pack and a radio transmitting a second signal representative of the electric voltage across the selected capacitor pack. Electronics compute an impedance associated with each capacitor pack. Each current sensor may include a current transformer positioned around a main power line energizing a respective capacitor pack. Each voltage sensor may include a relatively large high voltage discharge resistor connected across the respective capacitor pack, and a relatively small voltage measurement resistor connected in series with the relatively large high voltage discharge resistor across the respective capacitor pack.
G01R 15/06 - Diviseurs de tension avec des composantes réactives, p. ex. transformateurs à capacité
H04Q 9/00 - Dispositions dans les systèmes de commande à distance ou de télémétrie pour appeler sélectivement une sous-station à partir d'une station principale, sous-station dans laquelle un appareil recherché est choisi pour appliquer un signal de commande ou pour obtenir des valeurs mesurées
G01R 19/25 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe utilisant une méthode de mesure numérique
G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
G08C 17/02 - Dispositions pour transmettre des signaux caractérisées par l'utilisation d'une voie électrique sans fil utilisant une voie radio
H02H 3/10 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à une surcharge sensibles de plus à quelque autre condition électrique anormale
H01G 4/40 - Combinaisons structurales de condensateurs fixes avec d'autres éléments électriques non couverts par la présente sous-classe, la structure étant principalement constituée par un condensateur, p. ex. combinaisons RC
H01G 2/14 - Protection contre la surcharge électrique ou thermique
G01R 1/04 - BoîtiersOrganes de supportAgencements des bornes
Fault detection, isolation and restoration systems for electric power systems using “smart switch” points that autonomously coordinate operations to minimize the number of customers affected by outages and their durations, without relying on communications with a central controller or between the smart switch points. Each smart recloser can be individually programmed to operate as a tie-switch, a Type-A (normal or default type) sectionalizer, or a Type-B (special type) sectionalizer. The Type-A recloser automatically opens when it detects a fault, uses a direction-to-fault and zone-based distance-to-fault operating protocol, and stays “as is” with no automatic opening when power (voltage) is lost on both sides of the switch. The Type-B sectionalizer does the same thing and is further configured to automatically open when it detects that it is deenergized on both sides for a pre-defined time period, and to operate like a tie-switch once open.
G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p. ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits
H02H 1/00 - Détails de circuits de protection de sécurité
H02H 7/22 - Circuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour appareillage de distribution, p. ex. système de barre omnibusCircuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour dispositifs de commutation
G01R 31/28 - Test de circuits électroniques, p. ex. à l'aide d'un traceur de signaux
Electric power Fault detection, isolation and restoration (FDIR) systems using “smart switches” that autonomously coordinate operations to minimize the number of customers affected by outages and their durations, without relying on communications with a central controller or between the smart switch points. The smart switches typically operate during the substation breaker reclose cycles while the substation breakers are open, which enables the substation breakers to reclose successfully to restore service within their normal reclosing cycles. Alternatively, the smart switch may be timed to operate before the substation breakers trip to effectively remove the substation breakers from the fault isolation process. Both approaches allow the FDIR system to be installed with minimal reconfiguration of the substation protection scheme.
H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p. ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits
H02H 1/00 - Détails de circuits de protection de sécurité
G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
H02H 7/22 - Circuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour appareillage de distribution, p. ex. système de barre omnibusCircuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour dispositifs de commutation
G01R 31/28 - Test de circuits électroniques, p. ex. à l'aide d'un traceur de signaux
A fault-preventing circuit recloser includes a ballast impedance, power line current and voltage monitors, and controller that operates the switch based on measurements obtained from the current and voltage monitors. The controller aborts the closing (i.e., reopens the switch) when the controller detects that the switch has closed into faulted line. The circuit recloser temporarily introduces the ballast impedance into the circuit during the closing operation to limit the current spike and voltage dip caused by initially closing the switch into the faulted line. The circuit recloser also temporarily introduces the ballast impedance into the circuit during the opening operation to limit the voltage transient that can be caused by initially opening a load-carrying power line. Different ballast resistor insertion times are applied depending on the type of recloser operation (opening or closing) and whether a fault is detected.
H02H 9/00 - Circuits de protection de sécurité pour limiter l'excès de courant ou de tension sans déconnexion
H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p. ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits
H02H 1/00 - Détails de circuits de protection de sécurité
38.
RFID status monitor for high voltage and remote electric power systems
A remote blade closing detector switch is positioned on or near the jaws of an electric power disconnect switch, where proper seating of the blade in the jaws activates a detector switch. An extended conductor lead electrically connects the detector switch an RFID tag placed in a convenient reading location. The detector switch is configured to control a data signal, power to the antenna of the RFID tag, the power supply to the RFID tag, or a data signal between an RFID chip and an antenna as mechanisms for enabling and disabling the tag to report a status indicator. An antenna tuning compensator may be utilized to compensate for the impedance of the long conductor lead connected to the antenna. A noise filter may also be used to suppress electrical noise picked up by the long conductor lead in the harsh electrical environment of the disconnect switch.
G01R 31/327 - Tests d'interrupteurs de circuit, d'interrupteurs ou de disjoncteurs
G06K 7/10 - Méthodes ou dispositions pour la lecture de supports d'enregistrement par radiation électromagnétique, p. ex. lecture optiqueMéthodes ou dispositions pour la lecture de supports d'enregistrement par radiation corpusculaire
H01H 9/16 - Indicateurs de position, p. ex. "marche" ou "arrêt"
H01H 31/28 - Interrupteurs à coupure dans l'air pour haute tension sans moyen d'extinction ou de prévention des arcs avec contact mobile demeurant électriquement connecté à une ligne en position d'ouverture de l'interrupteur avec contact à déplacement angulaire
H01H 33/53 - EnveloppesRéservoirs, cuves, tuyauterie ou robinetterie pour le fluide d'extinction d'arcAccessoires pour ces dispositifs, p. ex. dispositifs de sécurité, dispositifs de décompression
H01H 33/20 - Moyens pour éteindre ou empêcher des arcs entre organes traversés par le courant utilisant des parafoudres à cornes
H04Q 9/00 - Dispositions dans les systèmes de commande à distance ou de télémétrie pour appeler sélectivement une sous-station à partir d'une station principale, sous-station dans laquelle un appareil recherché est choisi pour appliquer un signal de commande ou pour obtenir des valeurs mesurées
39.
COMBINED CURRENT AND VOLTAGE SENSOR FOR HIGH VOLTAGE ELECTRIC POWER LINES
A high voltage electric power line monitor includes a current sensor, and voltage sensor, an energy harvesting power supply, and communication device. The monitor is configured to be supported by a structure, such a sectionalizing switch disposed within an insulator cylinder. The current sensor coil and an energy harvesting coils are configured to surround and be positioned transverse to the monitored power line with the power line extending through an aperture formed by the current sensor. A foil patch voltage sensor is carried on an electronics board configured to be positioned parallel to the monitored power line, typically below the current sensor. Both the current sensor and the voltage sensor are configured to positioned adjacent to, but spaced apart from, the monitored power line. The sensors are housed within a Faraday cage to shield the current sensor from electromagnetic contamination.
G01R 19/25 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe utilisant une méthode de mesure numérique
G01R 15/00 - Détails des dispositions pour procéder aux mesures des types prévus dans les groupes , ou
G01R 19/00 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe
G01R 21/00 - Dispositions pour procéder aux mesures de la puissance ou du facteur de puissance
40.
Combined DC current, AC current and voltage sensor for high voltage electric power lines
The present invention may be embodied in an in-line high voltage electric power line monitor including a DC current sensor, an AC current sensor, a voltage sensor, an energy harvesting power supply, and a communication device configured. The in-line power line monitor includes a bus bar that connects in series with the monitored power line. For example, the in-line power line monitor may be connected at the junction point between the monitored power line and a support structure, such a sectionalizing switch that supports the monitor positioned between the switch and the power line. A pair of DC current measurement pickups are spaced apart on the bus bar and operatively connected to the microprocessor. The in-line power line monitor also includes an AC current sensor coil and an energy harvesting device (e.g., inductive coil) that surround the bus bar. The AC current sensor coil, the power supply coil and the voltage sensor positioned adjacent to, but spaced apart from, the bus bar. An electronics board pair carries a pair of foil patch voltage sensors and a pair of foil patch antenna elements positioned adjacent to the outer perimeter of the electronics board. Although the in-line power line monitor does not require a separate power supply, the electronics board may carry a backup battery if desired.
G01R 19/25 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe utilisant une méthode de mesure numérique
G01R 21/06 - Dispositions pour procéder aux mesures de la puissance ou du facteur de puissance par mesure du courant et de la tension
G01R 15/14 - Adaptations fournissant une isolation en tension ou en courant, p. ex. adaptations pour les réseaux à haute tension ou à courant fort
G01R 21/133 - Dispositions pour procéder aux mesures de la puissance ou du facteur de puissance en utilisant des techniques numériques
H05K 9/00 - Blindage d'appareils ou de composants contre les champs électriques ou magnétiques
G06F 1/26 - Alimentation en énergie électrique, p. ex. régulation à cet effet
G01R 15/18 - Adaptations fournissant une isolation en tension ou en courant, p. ex. adaptations pour les réseaux à haute tension ou à courant fort utilisant des dispositifs inductifs, p. ex. des transformateurs
41.
COMBINED DC CURRENT, AC CURRENT AND VOLTAGE SENSOR FOR HIGH VOLTAGE ELECTRIC POWER LINES
The present invention may be embodied in an in-line high voltage electric power line monitor including a DC current sensor, an AC current sensor, a voltage sensor, an energy harvesting power supply, and a communication device configured. The in-line power line monitor includes a bus bar that connects in series with the monitored power line. For example, the in-line power line monitor may be connected at the junction point between the monitored power line and a support structure, such a sectionalizing switch that supports the monitor positioned between the switch and the power line. A pair of DC current measurement pickups are spaced apart on the bus bar and operatively connected to the microprocessor. The in-line power line monitor also includes an AC current sensor coil and an energy harvesting device (e.g., inductive coil) that surround the bus bar. The AC current sensor coil, the power supply coil and the voltage sensor positioned adjacent to, but spaced apart from, the bus bar.
A high voltage capacitor current monitor that attaches to a bushing on the exterior of a capacitor container (commonly referred to as a “can”). The capacitor current monitor, which draws operating power from the power line, detects the current flowing through the high voltage capacitor and can be used as part of a capacitor status monitor to detect internal failures down to the level of a single capacitor pack. The monitor may include a radio transmitter and/or a visual status indicator, such as an electronic flag, indicating the detection of a fault or capacitor failure. The current monitor may also include a power supply current transformer providing power to the monitor from the power line. Capacitor current measurements may be communicated with a remote transmission unit (RTU), which communicates with a central control station that schedules capacitor maintenance based on the data received from the status monitors.
H02H 3/10 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à une surcharge sensibles de plus à quelque autre condition électrique anormale
G01R 15/06 - Diviseurs de tension avec des composantes réactives, p. ex. transformateurs à capacité
G01R 19/25 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe utilisant une méthode de mesure numérique
G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
G08C 17/02 - Dispositions pour transmettre des signaux caractérisées par l'utilisation d'une voie électrique sans fil utilisant une voie radio
G01R 31/02 - Essai des appareils, des lignes ou des composants électriques pour y déceler la présence de courts-circuits, de discontinuités, de fuites ou de connexions incorrectes de lignes
H04Q 9/00 - Dispositions dans les systèmes de commande à distance ou de télémétrie pour appeler sélectivement une sous-station à partir d'une station principale, sous-station dans laquelle un appareil recherché est choisi pour appliquer un signal de commande ou pour obtenir des valeurs mesurées
43.
High voltage capacitor monitor and maintenance system
A capacitor status monitor that attaches across the bushings on the exterior of a capacitor container (commonly referred to as a “can”). The capacitor status monitor, which draws operating power from the power line, detects the internal impedance of the capacitor can to detect internal failures down to the level of a single capacitor pack. The monitor may include a radio transmitter and/or a visual status indicator, such as an electronic flag, indicating the detection of an internal capacitor failure. The monitor may also include a power supply current transformer providing power to the monitor from the power line. Capacitor status monitors throughout the capacitor bank may communicate with a remote transmission unit (RTU), which communicates with a central control station that schedules capacitor maintenance based on the data received from the status monitors.
G01R 15/06 - Diviseurs de tension avec des composantes réactives, p. ex. transformateurs à capacité
G01R 19/25 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe utilisant une méthode de mesure numérique
G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
G08C 17/02 - Dispositions pour transmettre des signaux caractérisées par l'utilisation d'une voie électrique sans fil utilisant une voie radio
H02H 3/10 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à une surcharge sensibles de plus à quelque autre condition électrique anormale
G01R 31/02 - Essai des appareils, des lignes ou des composants électriques pour y déceler la présence de courts-circuits, de discontinuités, de fuites ou de connexions incorrectes de lignes
H04Q 9/00 - Dispositions dans les systèmes de commande à distance ou de télémétrie pour appeler sélectivement une sous-station à partir d'une station principale, sous-station dans laquelle un appareil recherché est choisi pour appliquer un signal de commande ou pour obtenir des valeurs mesurées
G01R 1/04 - BoîtiersOrganes de supportAgencements des bornes
H01G 4/40 - Combinaisons structurales de condensateurs fixes avec d'autres éléments électriques non couverts par la présente sous-classe, la structure étant principalement constituée par un condensateur, p. ex. combinaisons RC
H01G 2/14 - Protection contre la surcharge électrique ou thermique
44.
HIGH VOLTAGE CAPACITOR MONITOR AND MAINTENANCE SYSTEM
A capacitor status monitor that attaches across the bushings on the exterior of a capacitor container (commonly referred to as a "can"). The capacitor status monitor, which draws operating power from the power line, detects the internal impedance of the capacitor can to detect internal failures down to the level of a single capacitor pack. The monitor may include a radio transmitter and/or a visual status indicator, such as an electronic flag, indicating the detection of an internal capacitor failure. The monitor may also include a power supply current transformer providing power to the monitor from the power line. Capacitor status monitors throughout the capacitor bank may communicate with a remote transmission unit (RTU), which communicates with a central control station that schedules capacitor maintenance based on the data received from the status monitors.
G01R 31/02 - Essai des appareils, des lignes ou des composants électriques pour y déceler la présence de courts-circuits, de discontinuités, de fuites ou de connexions incorrectes de lignes
G01R 31/00 - Dispositions pour tester les propriétés électriquesDispositions pour la localisation des pannes électriquesDispositions pour tests électriques caractérisées par ce qui est testé, non prévues ailleurs
G01R 31/01 - Passage successif d'articles similaires aux tests, p. ex. tests "tout ou rien" d'une production de sérieTest d'objets en certains points lorsqu'ils passent à travers un poste de test
An instrumented electric power arrester includes a temperature sensor, wireless transmitter, and a visual over-temperature indicator. A disk shaped module, a replacement varister block, or a dummy block containing the sensor/transmitter is placed between varister blocks inside the arrester housing. A strap-on module is attached to the outside of the arrester housing. The sensor/transmitter utilizes a harvesting power supply that draws electric power for the electronics from the power line protected by the arrester. An ambient temperature sensor may be utilized to enhance accuracy. The temperature sensor/transmitter typically sends arrester monitoring data wirelessly to an RTU or handheld unit located outside the arrester, which relays the monitoring data to an operations control center that scheduled replacement of the arrester based on the monitoring data. A surge counter keeps track of the number of equipment and lightening related temperature surges experienced by the arrester.
G01K 1/024 - Moyens d’indication ou d’enregistrement spécialement adaptés aux thermomètres pour l’indication à distance
G01K 1/14 - SupportsDispositifs de fixationDispositions pour le montage de thermomètres en des endroits particuliers
G01K 3/00 - Thermomètres donnant une indication autre que la valeur instantanée de la température
G01K 7/16 - Mesure de la température basée sur l'utilisation d'éléments électriques ou magnétiques directement sensibles à la chaleur utilisant des éléments résistifs
H01C 7/10 - Résistances fixes constituées par une ou plusieurs couches ou revêtementsRésistances fixes constituées de matériaux conducteurs en poudre ou de matériaux semi-conducteurs en poudre avec ou sans matériaux isolants sensibles à la tension, p. ex. varistances
H01C 7/12 - Résistances de protection contre les surtensionsParafoudres
H02J 11/00 - Circuits pour pourvoir au service d'alimentation des auxiliaires de stations, dans lesquels la puissance électrique est produite, distribuée ou convertie
H02J 13/00 - Circuits pour pourvoir à l'indication à distance des conditions d'un réseau, p. ex. un enregistrement instantané des conditions d'ouverture ou de fermeture de chaque sectionneur du réseauCircuits pour pourvoir à la commande à distance des moyens de commutation dans un réseau de distribution d'énergie, p. ex. mise en ou hors circuit de consommateurs de courant par l'utilisation de signaux d'impulsion codés transmis par le réseau
An instrumented electric power arrester includes a temperature sensor, wireless transmitter, and a visual over-temperature indicator. A disk shaped module, a replacement varister block, or a dummy block containing the sensor/transmitter is placed between varister blocks inside the arrester housing. A strap-on module is attached to the outside of the arrester housing. The sensor/transmitter utilizes a harvesting power supply that draws electric power for the electronics from the power line protected by the arrester. An ambient temperature sensor may be utilized to enhance accuracy. The temperature sensor/transmitter typically sends arrester monitoring data wirelessly to an RTU or handheld unit located outside the arrester, which relays the monitoring data to an operations control center that scheduled replacement of the arrester based on the monitoring data. A surge counter keeps track of the number of equipment and lightening related temperature surges experienced by the arrester.
G01K 1/02 - Moyens d’indication ou d’enregistrement spécialement adaptés aux thermomètres
G01K 1/14 - SupportsDispositifs de fixationDispositions pour le montage de thermomètres en des endroits particuliers
G01R 1/36 - Aménagements ou circuits de protection contre les surcharges, pour appareils de mesures électriques
G01R 29/08 - Mesure des caractéristiques du champ électromagnétique
H02H 1/04 - Dispositions pour prévenir la réponse à des conditions transitoires anormales, p. ex. à la foudre
H01C 7/10 - Résistances fixes constituées par une ou plusieurs couches ou revêtementsRésistances fixes constituées de matériaux conducteurs en poudre ou de matériaux semi-conducteurs en poudre avec ou sans matériaux isolants sensibles à la tension, p. ex. varistances
H01C 7/12 - Résistances de protection contre les surtensionsParafoudres
A blade closing detector for an electric power switch includes a blade closing detector and an electronic or visual indicator. A first type of detector uses a gravity switch and a magnetic pickup to detect proper engagement between the blade and the switch. A second type of detector uses a sliding latch with a visual indicator rod to provide a visual indication of proper engagement of the blade within the jaws. A third type of detector uses a magnetic switch with a pivot arm and a dome shaped visual indicator. These detectors may be deployed individually or in combination and may be augmented with communication equipment to transmit switch status to a remote location. It will be understood that specific embodiments may include a variety of features in different combinations, as desired by different users.
A bullet resistant shield for electric power equipment constructed from standardized modular sections configured for easy erection in the field into walls and enclosures. The modular sections may be constructed at a factory and transported to the desired location where the sections are assembled together into walls and enclosures. The modules are sized for transportation by trucks over public roadway, rail, barge and so forth. Concrete foundations may be installed prior to arrival of the modular sections to ready the site for erection of the shied structure upon arrival of the modular sections. Unlike conventional bullet resistant enclosures, these sections provide adequate ventilation to avoid overheating of air-cooled electric power equipment, such as large substation transformers. One or more electric fans may be mounted in the section to provide forced air ventilation. The wall may be positioned to allow walk-up maintenance access without the use of doors.
An electric power line monitoring, communication and response system schedules the transmission of packets to occur during voltage zero-crossing intervals when corona is minimized. The transmitters may be located at high voltage hanging directly from the power line conductors along with associated current transformers and voltage sensors. A system of these transmitters distributed throughout the power grid communicate with each other in a data-forward manner to bring complete, real-time current and voltage waveform, device status and fault monitoring information to data aggregation waypoints, such as transmission substations where supervisory control and data acquisition (SCADA) equipment is installed. The power line monitoring data is then transmitted from the data waypoints to a central monitoring and control center, typically using existing SCADA equipment, to provide h detailed power line monitoring data for a large number of data monitoring points distributed throughout the power grid.
G01R 21/00 - Dispositions pour procéder aux mesures de la puissance ou du facteur de puissance
G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
G01R 22/06 - Dispositions pour la mesure de l'intégrale dans le temps d'une puissance électrique ou d'un courant, p. ex. compteurs d'électricité par des méthodes électroniques
G01R 21/06 - Dispositions pour procéder aux mesures de la puissance ou du facteur de puissance par mesure du courant et de la tension
G01R 35/00 - Test ou étalonnage des appareils couverts par les autres groupes de la présente sous-classe
G01R 15/14 - Adaptations fournissant une isolation en tension ou en courant, p. ex. adaptations pour les réseaux à haute tension ou à courant fort
G01R 19/25 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe utilisant une méthode de mesure numérique
51.
CORONA AVOIDANCE ELECTRIC POWER LINE MONITORING AND RESPONSE SYSTEM
An electric power line monitoring, communication and response system schedules the transmission of packets to occur during voltage zero-crossing intervals when corona is minimized. The transmitters may be located at high voltage hanging directly from the power line conductors along with associated current transformers and voltage sensors. A system of these transmitters distributed throughout the power grid communicate with each other in a data-forward manner to bring complete, real-time current and voltage waveform, device status and fault monitoring information to data aggregation waypoints, such as transmission substations where supervisory control and data acquisition (SCADA) equipment is installed. The power line monitoring data is then transmitted from the data waypoints to a central monitoring and control center, typically using existing SCADA equipment, to provide h detailed power line monitoring data for a large number of data monitoring points distributed throughout the power grid.
A high voltage sensor is located within a dielectric canister inside a high voltage power line support insulator. A space through the voltage sensor accommodates a mechanical connecting rod associated with a circuit interrupter switch located in another section of the support insulator. An electrically floating dumbbell-shaped sensor extending between and capacitively coupled to high voltage and low voltage shields assumes a midpoint voltage value between the shields. A sensor plate or other suitable pickup capacitively coupled to the dumbbell sensor provides a voltage measurement, which is calibrated to provide a measurement of the power line voltage. This solution allows a voltage sensor to be added to or integrated in conventionally sized power line support insulators with no additional size, negligible additional weight, and minimal additional cost.
G01R 27/26 - Mesure de l'inductance ou de la capacitanceMesure du facteur de qualité, p. ex. en utilisant la méthode par résonanceMesure de facteur de pertesMesure des constantes diélectriques
G01R 15/16 - Adaptations fournissant une isolation en tension ou en courant, p. ex. adaptations pour les réseaux à haute tension ou à courant fort utilisant des dispositifs capacitifs
An electric power switch suitable as a capacitor, line and load switch for transmission and distribution voltages includes an external actuator controlled by current transformers (CTs) mounted on live tanks comprising insulators forming dielectric containers that house the contactors of the switch. The CTs are located on the outside of the insulators in the regions of the insulators overlying the internal contactors between the upper and lower high voltage line taps. The actuator and controller may also be located outside the dielectric container, as desired. This configuration minimizes the size of the dielectric container and removes the severe size constraint inherent in design conventional "live tank" switch designs, while also avoiding the need for separate line-mounted CTs. This design also avoids the need for a separate grounded "dead tank" to house the CTs, which are more conveniently located in the outside of the insulators.
A sealed solenoid, magnetically operated electric power switch is suitable for use as capacitor, line and load switch operating at transmission and distribution voltages that includes no seals through the sealed container housing the contactor portion of the switch. The sealed solenoid switch includes a magnetically operated drive system with an actuator that magnetically couples across the container wall to avoid the use of a moving or sliding seal as part of the drive system. The sealed solenoid switch may also include a ballast resistor and resistor contact located inside the sealed container to avoid another seal as part of the ballast system. A magnetic latch holds the switch in a closed position, and a spring holds the switch in the closed position, to avoid the need for an energizing current to maintain the switch in either position.
A high impedance fault isolation system for a radially connected three phase electric power line that utilizes three phase current measurements to determine the presence of a fault without the need for any voltage measurements or a battery powered controller. This eliminates the need for costly phase voltage measuring devices conventionally required to detect high impedance faults, which makes it economical to install fault isolation system at a greater number of locations throughout the power system. The system detects faults using current measurements by computing the negative and zero sequence current components and comparing the amplitudes of the negative and zero sequence components. A fault is detected when the ratio of the amplitudes of the negative and zero sequence components falls within a predefined fault detection range, such as the range from 0.5 to 1.5.
H02H 3/08 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à une surcharge
A folding high voltage electric power switch that can be fully assembled, tested and adjusted at the factory and then folded for shipping on a road truck with minimal disassembly. The switch can then be readied for installation with minimal field assembly largely limited to unfolding and securing support beams and struts. The switch includes a number of phase insulators (i.e., two phase insulators for a 2-way switch and three phase insulators for a three-way switch), a central switch insulator and a number of blade arms, each selectively connecting an electric power tap at the central insulator to an electric power tap at a respective phase insulator. The platform includes structural beams and struts that easily fold for transportation and unfold for installation in the field while the beams, struts, insulators and blade arms remain attached together.
A directional fault sectionalizing system that utilizes one phase voltage measurement and three phase current measurements to determine the directionality of high impedance faults on a three phase electric power circuit. This eliminates the need for two of the three voltage measuring devices at each monitoring station conventionally required to determine fault directionality, which makes it economical to install at a greater number of distribution tap points. The system is particularly useful for commonly used three-way tap points along distribution lines where three phase voltage measurement is not readily available. The system is capable of identifying faults under challenging circumstances, such faults occurring on unbalanced three phase power lines and faults occurring on tapped line segments where the currents are relatively small compared to the currents flowing in the main line segments.
G01R 31/00 - Dispositions pour tester les propriétés électriquesDispositions pour la localisation des pannes électriquesDispositions pour tests électriques caractérisées par ce qui est testé, non prévues ailleurs
H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p. ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits
G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
H02H 3/32 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à la différence de tensions ou de courantsCircuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à un angle de déphasage entre tensions ou courants comprenant la comparaison des valeurs de tension ou de courant en des points correspondants des différents conducteurs d'un même système, p. ex. de courants dans des conducteurs d'aller et retour
61.
High voltage power line communication system using an energy harvesting power supply
A communication and control system for a high voltage power line using an energy harvesting power supply to avoid batteries in the communication components maintained at line voltage. The energy harvesting power supply utilizes scavenged backscatter power received from a transceiver maintained at ground potential or a power supply with a super-saturating magnetic flux core, such as a mu-metal core, to harvest electromagnetic field energy from the power line. The communication equipment maintained at line voltage communicates information to the transceiver maintained at ground potential by modulating backscatter energy reflected from the beam transmitted by the ground level transceiver to minimize the power requirement of the communication equipment maintained at line voltage. Response equipment includes capacitors, voltage regulator, voltage sag supporter, circuit interrupter, remote communication equipment, reporting and analysis system.
