Techniques, systems and articles are described for preparing electrical cables for connections to a power grid. In one example, a system includes a cable preparation device configured to cut one or more layers of an electrical cable and a computing device configured to control the cable preparation device to cut the one or more layers of the electrical cable.
H02G 1/12 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour supprimer l'isolant ou l'armature des câbles, p. ex. de leur extrémité
H04N 7/18 - Systèmes de télévision en circuit fermé [CCTV], c.-à-d. systèmes dans lesquels le signal vidéo n'est pas diffusé
Techniques, systems and articles are described for preparing electrical cables for connections to a power grid. In one example, a system includes a cable preparation device configured to cut one or more layers of an electrical cable and a computing device configured to control the cable preparation device to cut the one or more layers of the electrical cable. The computing device may determine one or more target cutting distances and determine whether an actual cutting distance satisfies the target cutting distance. The computing device may detect defects in the electrical cable. The computing device may further determine whether the cable preparation device should be serviced.
H02G 1/12 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour supprimer l'isolant ou l'armature des câbles, p. ex. de leur extrémité
An example electrical cable preparation device includes a rotatable tool head including a plurality of rollers and at least one cutting tool The device also includes a depth dri ver configured to insert into the rotetable tool head to adjust a radial depth of the plurality of rollers or a radial depth of the at least one cutting tool and a housing configured to house the rotatable tool head and to allow the rotatable tool head to rotate about an electrical cable and move axially along the electrical cable. The device also includes a gripper configured to couple the housing to the electrical cable, and the gripper is configured, to prevent the housing from rotating or moving axially relative to the electrical cable. The electrical cable preparation device is configured to remove one or more layers of the electrical cable.
H02G 1/12 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour supprimer l'isolant ou l'armature des câbles, p. ex. de leur extrémité
4.
FREQUENCY DOMAIN REFLECTOMETRY FOR POWER DISTRIBUTION SYSTEMS
An example system is configured to monitor one or more conditions of an electric powerline including one or more electrical cables. The system includes a node operatively coupled to an electrical cable of the one or more electrical cables, and the node communicatively coupled to a central computing system, lire node includes a sensor circuit configured to acquire frequency domain reflectometry (FDR) data, by simultaneously forcing a voltage across the powerline and measuring a current through the powerline. The node is configured to deliver the frequency domain reflectometry data to the central computing system.
In general, a system configured to monitor one or more conditions of an electric powerline having one or more electrical cables includes at least one primary node operatively coupled to at least one electrical cable of the one or more electrical cables and communicatively coupled to a central computing system; and at least one secondary node operatively coupled to at least one electrical cable of the one or more electrical cables and configured to communicate data via powerline communication to the at least one primary′ node, wherein the at least one primary node is configured to deliver the data to the central computing system.
G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
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
H04B 3/54 - Systèmes de transmission par lignes de réseau de distribution d'énergie
6.
MULTIMODE SENSING SYSTEM FOR MEDIUM AND HIGH VOLTAGE CABLES AND EQUIPMENT
An example system is configured to monitor one or more conditions of an electric powerline. The system includes a node operatively coupled to an electrical cable of the one or more electrical cables and communicatively coupled to a central computing system. The node comprises a sensor configured to acquire a first sensor data and to acquire a second sensor data different from the first sensor data, and the node is configured to deliver the first sensor data and the second sensor data, to the central computing system.
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
7.
Monitoring system for evaluating a condition of an electrical grid
In general, a monitoring system includes one or more nodes that are capacitively coupled to a cable of a multiphase electric power line. In some examples, a node includes a coupling layer disposed over a jacket layer of the cable and capacitively coupled to a shield layer of the cable. In some examples, a node may include a first coupling layer capacitively coupled to a first cable, and a second coupling layer capacitively coupled to a second cable, such that the node is differentially coupled to the cable pair to generate a differential data signal and to perform at least one of: sensing a native signal within the cable pair; injecting an intentional signal into the cable pair; receiving an intentional signal from within the cable pair; or providing a channel characterization.
G01R 31/12 - Test de la rigidité diélectrique ou de la tension disruptive
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
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
8.
Electrical power cable monitoring device including partial discharge sensor
Techniques, systems and articles are described for monitoring electrical equipment of a power grid and predicting likelihood failure events of such electrical equipment. In one example, a cable accessory is configured to couple to an electrical power cable and includes a partial discharge sensor and a communications unit. The partial discharge sensor is configured to detect partial discharge events and output data indicative of the partial discharge events. The communications unit is configured to output event data based at least in part on the partial discharge data.
G01R 31/12 - Test de la rigidité diélectrique ou de la tension disruptive
G01R 31/58 - Test de lignes, de câbles ou de conducteurs
H02G 1/14 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour la jonction ou la terminaison de câbles
Techniques, systems and articles are described for preparing electrical cables for connections to a power grid. In one example, a cable-preparation system includes a tool-head mount configured to couple to a cutting-tool head, wherein the cutting-tool head is configured to receive a first portion of an electrical cable and comprises a plurality of rollers and at least one rotatable cutting tool configured to cut at least one layer of the electrical cable; a cable clamp configured to retain a second portion of the electrical cable; and a guide rail extending from the tool-head mount to the cable clamp parallel to a longitudinal axis of the electrical cable, wherein the guide rail guides an axial movement of the cutting-tool head along the electrical cable as the cutting-tool head cuts the one or more layers of the electrical cable.
H02G 1/12 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour supprimer l'isolant ou l'armature des câbles, p. ex. de leur extrémité
G01B 11/06 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la longueur, la largeur ou l'épaisseur pour mesurer l'épaisseur
G01B 11/08 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer des diamètres
H01R 43/28 - Appareils ou procédés spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation de connecteurs de lignes ou de collecteurs de courant ou pour relier les conducteurs électriques pour traiter le fil avant sa connexion aux pièces de contact, non prévus dans les groupes
G01N 21/952 - Inspection de la surface extérieure de corps cylindriques ou de fils
Techniques, systems and articles are described for preparing electrical cables for connections to a power grid. In one example, a cable-cross-section-measurement tool includes a housing defining a cavity, wherein the housing is configured to position an end-face of an electrical cable within the cavity; a camera disclosed within the cavity of the housing, wherein the camera is configured to capture an image of the end-face of the electrical cable; and a telecentric lens optically coupled to the camera, wherein the telecentric lens comprises a non-angular field of view configured to reduce, in the image, distortion from parallax associated with at least one portion of the end-face of the electrical cable that is oriented at an oblique angle relative to an optical axis of the telecentric lens.
H02G 1/12 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour supprimer l'isolant ou l'armature des câbles, p. ex. de leur extrémité
G01B 11/06 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la longueur, la largeur ou l'épaisseur pour mesurer l'épaisseur
G01B 11/08 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer des diamètres
G01B 11/14 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la distance ou la marge entre des objets ou des ouvertures espacés
G01N 21/88 - Recherche de la présence de criques, de défauts ou de souillures
G01N 21/952 - Inspection de la surface extérieure de corps cylindriques ou de fils
G02B 13/22 - Objectifs ou systèmes de lentilles télécentriques
H01R 43/28 - Appareils ou procédés spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation de connecteurs de lignes ou de collecteurs de courant ou pour relier les conducteurs électriques pour traiter le fil avant sa connexion aux pièces de contact, non prévus dans les groupes
Techniques, systems, and articles are described for preparing electrical cables for connections to a power grid. In one example, a system includes a handheld cable preparation device configured to cut one or more layers of an electrical cable and a computing device configured to control the cable preparation device to cut the one or more layers of the electrical cable.
H02G 1/12 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour supprimer l'isolant ou l'armature des câbles, p. ex. de leur extrémité
H01R 43/28 - Appareils ou procédés spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation de connecteurs de lignes ou de collecteurs de courant ou pour relier les conducteurs électriques pour traiter le fil avant sa connexion aux pièces de contact, non prévus dans les groupes
G01B 11/14 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la distance ou la marge entre des objets ou des ouvertures espacés
A partial discharge (PD) detection system includes a node including a sensor configured to capacitively couple to a shield layer of a cable of an electric power line. The sensor is configured to collect, from the cable, sensor data indicative of an alternating-current (AC) electrical signal in the cable. The system further includes a high-pass filter configured to filter out low-frequency signals from the sensor data, and processing circuitry configured to detect, based on the filtered sensor data, a PD event at a location on the cable that is local to the sensor.
G01R 31/12 - Test de la rigidité diélectrique ou de la tension disruptive
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
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
In general, a system configured to monitor one or more conditions of an electric powerline having one or more electrical cables includes at least one primary node operatively coupled to at least one electrical cable of the one or more electrical cables and communicatively coupled to a central computing system; and at least one secondary node operatively coupled to at least one electrical cable of the one or more electrical cables and configured to communicate data via powerline communication to the at least one primary' node, wherein the at least one primary node is configured to deliver the data to the central computing system.
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
G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
G01R 19/165 - Indication de ce qu'un courant ou une tension est, soit supérieur ou inférieur à une valeur prédéterminée, soit à l'intérieur ou à l'extérieur d'une plage de valeurs prédéterminée
G01R 31/58 - Test de lignes, de câbles ou de conducteurs
H04B 3/54 - Systèmes de transmission par lignes de réseau de distribution d'énergie
14.
Multichannel electrical power grid monitoring system for detecting and analyzing sensor installation and configuration errors
Techniques, methods, systems and articles are described for monitoring electrical equipment of a power grid, identifying installation and/or configuration errors of such electrical equipment, and automatically correcting the errors. In one example, a system includes at least one processor and a plurality of sensors coupled to a multi-phase power line comprising a plurality of electrical cables that are each associated with a respective phase. The plurality of sensors are configured to generate sensor data that is indicative of one or more conditions of the electrical cables. The at least one processor is configured to receive the sensor data and determine, based at least in part on the sensor data, whether a sensor of the plurality of sensors is installed correctly. The at least one processor is also configured to perform an action in response to determining that the sensor is not installed correctly.
Electrical power cable preparation techniques to connect to cable accessories for use in a power grid are described. In an example, a system comprises a cross-section sensing module. The cross-section sensing module comprises a camera configured to capture at least one image of an end-face of an electrical cable, a housing configured to position the end-face of the electrical cable substantially perpendicular to an optical axis of the camera and at an imaging distance from the camera, and at least one optical marker configured to indicate a diameter of the electrical cable. The system further comprises an electrical cable preparation device configured to cut at least one layer of an electrical cable, and a computing device configured to display a user interface, the user interface configured to accept user inputs controlling at least one setting of the cross-section sensing module and electrical cable preparation device.
H02G 1/12 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour supprimer l'isolant ou l'armature des câbles, p. ex. de leur extrémité
H04N 7/18 - Systèmes de télévision en circuit fermé [CCTV], c.-à-d. systèmes dans lesquels le signal vidéo n'est pas diffusé
A method for regulating input impedance of a switching regulator, the method comprising: obtaining, at an impedance controller: (a) a measured voltage value that is indicative of an input current of the switching regulator and (b) an input voltage of the switching regulator, wherein a ratio of the input voltage to the input current defines an actual input impedance of the switching regulator; generating a control signal by the impedance controller, in accordance with a difference between the actual input impedance of the switching regulator and a desired input impedance of the switching regulator, wherein the desired input impedance is a predefined impedance; and controlling a feedback node feeding the switching regulator, in accordance with the control signal, to realize an output voltage of the switching regulator for achieving the desired input impedance, wherein the feedback node is external to the switching regulator, thereby regulating the input impedance of the switching regulator externally to the switching regulator.
H02M 3/156 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs avec commande automatique de la tension ou du courant de sortie, p. ex. régulateurs à commutation
H02J 50/00 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique
H02J 50/10 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant un couplage inductif
H02M 1/00 - Détails d'appareils pour transformation
H02M 7/217 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
Techniques, systems and articles are described for preparing electrical cables for connections to a power grid. In one example, a system includes a rotatable tool head having a plurality of rollers, a cutting tool, a signal reflection target coupled to the at least one cutting tool, a transceiver configured to transmit a signal toward the reflection target and detect a reflected signal from the reflection target; and at least one computing device configured to cause the transceiver to transmit the signal toward the reflection target and determine, based on the reflected signal, a current relative position of the cutting tool.
H02G 1/12 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour supprimer l'isolant ou l'armature des câbles, p. ex. de leur extrémité
H04N 7/18 - Systèmes de télévision en circuit fermé [CCTV], c.-à-d. systèmes dans lesquels le signal vidéo n'est pas diffusé
Techniques, systems and articles are described for preparing electrical cables for connections to a power grid. In one example, a system includes a cable preparation device configured to cut one or more layers of an electrical cable and a computing device configured to control the cable preparation device to cut the one or more layers of the electrical cable. The computing device may determine one or more target cutting distances and determine whether an actual cutting distance satisfies the target cutting distance. The computing device may detect defects in the electrical cable. The computing device may further determine whether the cable preparation device should be serviced.
H02G 1/12 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour supprimer l'isolant ou l'armature des câbles, p. ex. de leur extrémité
Techniques, systems and articles are described for preparing electrical cables for connections to a power grid. In one example, a system includes a cable preparation device configured to cut one or more layers of an electrical cable and a computing device configured to control the cable preparation device to cut the one or more layers of the electrical cable.
H02G 1/12 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour supprimer l'isolant ou l'armature des câbles, p. ex. de leur extrémité
H04N 7/18 - Systèmes de télévision en circuit fermé [CCTV], c.-à-d. systèmes dans lesquels le signal vidéo n'est pas diffusé
Devices are described that support, house, and protect an electrical cable monitoring system that is electrically coupled to an electrical cable. An example support structure includes an elongate body including an interior surface extending along and concentric to an axis of the electrical cable. The body is configured to engage a cable accessory disposed on the electrical cable. The support structure includes a first electrode attached to the interior surface and configured to operatively couple to the cable accessory. The support structure includes a second electrode attached to the body and configured to operatively couple to the shielding layer. The support structure includes a monitoring device attached to the interior surface and operatively coupled to the first and second electrodes. The monitoring device is configured to monitor one or more conditions of the electrical cable or the cable accessory.
G01R 31/58 - Test de lignes, de câbles ou de conducteurs
H02G 15/113 - Boîtes divisées longitudinalement dans la direction du câble principal
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
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
21.
Electrical power cable monitoring device using low side electrode and earth ground separation
Techniques, systems and articles are described for monitoring electrical equipment of a power grid and predicting likelihood failure events of such electrical equipment. In one example, a sensing device is configured to couple to an electrical power cable. The sensing device includes a plurality of concentric layers and a monitoring device. The plurality of concentric layers include a first layer, second layer, and third layer. The first layer is configured to concentrically surround a central conductor of the electrical cable and includes an insulating material. The second layer includes a conducting material. The third layer includes a resistive material configured to resist electrical flow between the second layer and a ground conductor exterior to the third layer. The monitoring device includes a sensor and communication unit configured to output data indicative of the sensor data.
In general, a monitoring system includes one or more nodes that are capacitively coupled to a cable of a multiphase electric power line. In some examples, a node includes a coupling layer disposed over a jacket layer of the cable and capacitively coupled to a shield layer of the cable. In some examples, a node may include a first coupling layer capacitively coupled to a first cable, and a second coupling layer capacitively coupled to a second cable, such that the node is differentially coupled to the cable pair to generate a differential data signal and to perform at least one of: sensing a native signal within the cable pair; injecting an intentional signal into the cable pair; receiving an intentional signal from within the cable pair; or providing a channel characterization.
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 15/16 - 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
G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
G01R 31/12 - Test de la rigidité diélectrique ou de la tension disruptive
A partial discharge (PD) detection system includes a node including a sensor configured to capacitively couple to a shield layer of a cable of an electric power line. The sensor is configured to collect, from the cable, sensor data indicative of an alternating-current (AC) electrical signal in the cable. The system further includes a high-pass filter configured to filter out low-frequency signals from the sensor data, and processing circuitry configured to detect, based on the filtered sensor data, a PD event at a location on the cable that is local to the sensor.
G01R 31/12 - Test de la rigidité diélectrique ou de la tension disruptive
G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
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
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
Techniques, systems, and articles are described for preparing electrical cables for connections to a power grid. In one example, a system includes a handheld cable preparation device configured to cut one or more layers of an electrical cable and a computing device configured to control the cable preparation device to cut the one or more layers of the electrical cable.
H02G 1/12 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour supprimer l'isolant ou l'armature des câbles, p. ex. de leur extrémité
H01R 43/28 - Appareils ou procédés spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation de connecteurs de lignes ou de collecteurs de courant ou pour relier les conducteurs électriques pour traiter le fil avant sa connexion aux pièces de contact, non prévus dans les groupes
Techniques, systems and articles are described for preparing electrical cables for connections to a power grid. In one example, a cable-cross-section-measurement tool includes a housing defining a cavity, wherein the housing is configured to position an end-face of an electrical cable within the cavity; a camera disclosed within the cavity of the housing, wherein the camera is configured to capture an image of the end-face of the electrical cable; and a telecentric lens optically coupled to the camera, wherein the telecentric lens comprises a non-angular field of view configured to reduce, in the image, distortion from parallax associated with at least one portion of the end-face of the electrical cable that is oriented at an oblique angle relative to an optical axis of the telecentric lens.
G01B 11/06 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la longueur, la largeur ou l'épaisseur pour mesurer l'épaisseur
G01B 11/08 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer des diamètres
H01R 43/28 - Appareils ou procédés spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation de connecteurs de lignes ou de collecteurs de courant ou pour relier les conducteurs électriques pour traiter le fil avant sa connexion aux pièces de contact, non prévus dans les groupes
H02G 1/12 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour supprimer l'isolant ou l'armature des câbles, p. ex. de leur extrémité
G01N 21/952 - Inspection de la surface extérieure de corps cylindriques ou de fils
Techniques, systems and articles are described for preparing electrical cables for connections to a power grid. In one example, a cable-preparation system includes a tool-head mount configured to couple to a cutting-tool head, wherein the cutting-tool head is configured to receive a first portion of an electrical cable and comprises a plurality of rollers and at least one rotatable cutting tool configured to cut at least one layer of the electrical cable; a cable clamp configured to retain a second portion of the electrical cable; and a guide rail extending from the tool-head mount to the cable clamp parallel to a longitudinal axis of the electrical cable, wherein the guide rail guides an axial movement of the cutting-tool head along the electrical cable as the cutting-tool head cuts the one or more layers of the electrical cable.
H02G 1/12 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour supprimer l'isolant ou l'armature des câbles, p. ex. de leur extrémité
H01R 43/28 - Appareils ou procédés spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation de connecteurs de lignes ou de collecteurs de courant ou pour relier les conducteurs électriques pour traiter le fil avant sa connexion aux pièces de contact, non prévus dans les groupes
27.
Electrical power cable monitoring device including partial discharge sensor
Techniques, systems and articles are described for monitoring electrical equipment of a power grid and predicting likelihood failure events of such electrical equipment. In one example, a cable accessory is configured to couple to an electrical power cable and includes a partial discharge sensor and a communications unit. The partial discharge sensor is configured to detect partial discharge events and output data indicative of the partial discharge events. The communications unit is configured to output event data based at least in part on the partial discharge data.
G01R 31/12 - Test de la rigidité diélectrique ou de la tension disruptive
G01R 31/58 - Test de lignes, de câbles ou de conducteurs
H02G 1/14 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour la jonction ou la terminaison de câbles
28.
MULTICHANNEL ELECTRICAL POWER GRID MONITORING SYSTEM FOR DETECTING AND ANALYZING SENSOR INSTALLATION AND CONFIGURATION ERRORS
Techniques, methods, systems and articles are described for monitoring electrical equipment of a power grid, identifying installation and/or configuration errors of such electrical equipment, and automatically correcting the errors. In one example, a system includes at least one processor and a plurality of sensors coupled to a multi-phase power line comprising a plurality of electrical cables that are each associated with a respective phase. The plurality of sensors are configured to generate sensor data that is indicative of one or more conditions of the electrical cables. The at least one processor is configured to receive the sensor data and determine, based at least in part on the sensor data, whether a sensor of the plurality of sensors is installed correctly. The at least one processor is also configured to perform an action in response to determining that the sensor is not installed correctly.
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 35/00 - Test ou étalonnage des appareils couverts par les autres groupes de la présente sous-classe
29.
Method and system for synchronizing a mesh network
A system and method of synchronizing a mesh network comprising a plurality of nodes are provided. The method may include sensing and transmitting, by a first subset of the plurality nodes, temperature values of the first subset nodes; receiving, by at least one back-end unit, from the first subset nodes, the temperature values of the first subset nodes; determining, by the at least one back-end unit, for a second subset of the plurality of nodes including all the first subset nodes, respective ambient-related clock drift values, based on the temperature values of the first subset nodes and an inter-node data; transmitting, by the at least one back-end unit, the respective ambient-related clock drift values to the second subset nodes; and determining, by the second subset nodes, ambient-related time offset values between each respective two nodes of the second subset, based on the respective nodes' ambient-related clock drift values.
A method for regulating input impedance of a switching regulator, the method comprising: obtaining, at an impedance controller: (a) a measured voltage value that is indicative of an input current of the switching regulator and (b) an input voltage of the switching regulator, wherein a ratio of the input voltage to the input current defines an actual input impedance of the switching regulator; generating a control signal by the impedance controller, in accordance with a difference between the actual input impedance of the switching regulator and a desired input impedance of the switching regulator, wherein the desired input impedance is a predefined impedance; and controlling a feedback node feeding the switching regulator, in accordance with the control signal, to realize an output voltage of the switching regulator for achieving the desired input impedance, wherein the feedback node is external to the switching regulator, thereby regulating the input impedance of the switching regulator externally to the switching regulator.
H02M 7/00 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continuTransformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif
G05F 1/67 - Régulation de la puissance électrique à la puissance maximale que peut fournir un générateur, p. ex. une cellule solaire
H04B 5/00 - Systèmes de transmission en champ proche, p. ex. systèmes à transmission capacitive ou inductive
Techniques, systems and articles are described for preparing electrical cables for connections to a power grid. In one example, a system includes a cable preparation device configured to cut one or more layers of an electrical cable and a computing device configured to control the cable preparation device to cut the one or more layers of the electrical cable.
H02G 1/12 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour supprimer l'isolant ou l'armature des câbles, p. ex. de leur extrémité
Techniques, systems and articles are described for preparing electrical cables for connections to a power grid. In one example, a system includes a rotatable tool head having a plurality of rollers, a cutting tool, a signal reflection target coupled to the at least one cutting tool, a transceiver configured to transmit a signal toward the reflection target and detect a reflected signal from the reflection target; and at least one computing device configured to cause the transceiver to transmit the signal toward the reflection target and determine, based on the reflected signal, a current relative position of the cutting tool.
H02G 1/12 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour supprimer l'isolant ou l'armature des câbles, p. ex. de leur extrémité
Techniques and systems are described that achieve faster and more accurate preparation of electrical cables and accessories for use within the power utilities industry. When making connections to a power grid, such increased cable preparation accuracy, relative to prior art techniques, reduces cable defects thereby increasing cable durability with reduced overall cable maintenance costs. In one example, a system includes a cable preparation device configured to cut one or more layers of an electrical cable and a computing device configured to control the cable preparation device to cut the one or more layers of the electrical cable. The computing device may determine one or more target cutting distances and determine whether an actual cutting distance satisfies the target cutting distance. The computing device may detect defects in the electrical cable. The computing device may further determine whether the cable preparation device should be serviced.
H02G 1/12 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour supprimer l'isolant ou l'armature des câbles, p. ex. de leur extrémité
Techniques, systems and articles are described for preparing electrical cables for connections to a power grid. In one example, a system includes a cable preparation device configured to cut one or more layers of an electrical cable and a computing device configured to control the cable preparation device to cut the one or more layers of the electrical cable. The computing device may determine one or more target cutting distances and determine whether an actual cutting distance satisfies the target cutting distance. The computing device may detect defects in the electrical cable. The computing device may further determine whether the cable preparation device should be serviced.
H02G 1/12 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour supprimer l'isolant ou l'armature des câbles, p. ex. de leur extrémité
Electrical power cable preparation techniques to connect to cable accessories for use in a power grid are described. In an example, a system comprises a cross-section sensing module. The cross-section sensing module comprises a camera configured to capture at least one image of an end-face of an electrical cable, a housing configured to position the end-face of the electrical cable substantially perpendicular to an optical axis of the camera and at an imaging distance from the camera, and at least one optical marker configured to indicate a diameter of the electrical cable. The system further comprises an electrical cable preparation device configured to cut at least one layer of an electrical cable, and a computing device configured to display a user interface, the user interface configured to accept user inputs controlling at least one setting of the cross-section sensing module and electrical cable preparation device.
H02G 1/12 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour supprimer l'isolant ou l'armature des câbles, p. ex. de leur extrémité
36.
SUPPORT STRUCTURE FOR CABLE AND CABLE ACCESSORY CONDITION MONITORING DEVICES
Devices are described that support, house, and protect an electrical cable monitoring system that is electrically coupled to an electrical cable. An example support structure includes an elongate body including an interior surface extending along and concentric to an axis of the electrical cable. The body is configured to engage a cable accessory disposed on the electrical cable. The support structure includes a first electrode attached to the interior surface and configured to operatively couple to the cable accessory. The support structure includes a second electrode attached to the body and configured to operatively couple to the shielding layer. The support structure includes a monitoring device attached to the interior surface and operatively coupled to the first and second electrodes. The monitoring device is configured to monitor one or more conditions of the electrical cable or the cable accessory.
H02G 15/105 - Jonctions de câbles protégées par des coffrets, p. ex. par des boîtes de distribution, de connexion ou de jonction avec des moyens pour atténuer la contrainte électrique connectés au blindage du câble uniquement
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
H02G 15/113 - Boîtes divisées longitudinalement dans la direction du câble principal
37.
ELECTRICAL POWER CABLE MONITORING DEVICE USING LOW SIDE ELECTRODE AND EARTH GROUND SEPARATION
Techniques, systems and articles are described for monitoring electrical equipment of a power grid and predicting likelihood failure events of such electrical equipment. In one example, a sensing device is configured to couple to an electrical power cable. The sensing device includes a plurality of concentric layers and a monitoring device. The plurality of concentric layers include a first layer, second layer, and third layer. The first layer is configured to concentrically surround a central conductor of the electrical cable and includes an insulating material. The second layer includes a conducting material. The third layer includes a resistive material configured to resist electrical flow between the second layer and a ground conductor exterior to the third layer. The monitoring device includes a sensor and communication unit configured to output data indicative of the sensor data.
G01R 31/12 - Test de la rigidité diélectrique ou de la tension disruptive
G01R 15/06 - Diviseurs de tension avec des composantes réactives, p. ex. transformateurs à capacité
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
38.
ELECTRICAL POWER CABLE MONITORING DEVICE INCLUDING PARTIAL DISCHARGE SENSOR
Techniques, systems and articles are described for monitoring electrical equipment of a power grid and predicting likelihood failure events of such electrical equipment. In one example, a cable accessory is configured to couple to an electrical power cable and includes a partial discharge sensor and a communications unit. The partial discharge sensor is configured to detect partial discharge events and output data indicative of the partial discharge events. The communications unit is configured to output event data based at least in part on the partial discharge data.
G01R 31/12 - Test de la rigidité diélectrique ou de la tension disruptive
G01R 15/06 - Diviseurs de tension avec des composantes réactives, p. ex. transformateurs à capacité
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
G01R 31/58 - Test de lignes, de câbles ou de conducteurs
G01R 31/66 - Test de connexions, p. ex. de fiches de prises de courant ou de raccords non déconnectables
39.
METHOD AND SYSTEM FOR SYNCHRONIZING A MESH NETWORK
A system and method of synchronizing a mesh network comprising a plurality of nodes are provided. The method may include sensing and transmitting, by a first subset of the plurality nodes, temperature values of the first subset nodes; receiving, by at least one back-end unit, from the first subset nodes, the temperature values of the first subset nodes; determining, by the at least one back-end unit, for a second subset of the plurality of nodes including all the first subset nodes, respective ambient-related clock drift values, based on the temperature values of the first subset nodes and an inter-node data; transmitting, by the at least one back-end unit, the respective ambient-related clock drift values to the second subset nodes; and determining, by the second subset nodes, ambient-related time offset values between each respective two nodes of the second subset, based on the respective nodes' ambient-related clock drift values.
A system and method of synchronizing a mesh network comprising a plurality of nodes are provided. The method may include sensing and transmitting, by a first subset of the plurality nodes, temperature values of the first subset nodes; receiving, by at least one back-end unit, from the first subset nodes, the temperature values of the first subset nodes; determining, by the at least one back-end unit, for a second subset of the plurality of nodes including all the first subset nodes, respective ambient-related clock drift values, based on the temperature values of the first subset nodes and an inter-node data; transmitting, by the at least one back-end unit, the respective ambient-related clock drift values to the second subset nodes; and determining, by the second subset nodes, ambient-related time offset values between each respective two nodes of the second subset, based on the respective nodes' ambient-related clock drift values.
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