The invention relates to a fault current detection device for an overhead power line. The fault current detection device is configured to apply a fault detection algorithm which includes a duration test and a return to normal test. The fault current detection device reports a fault current to a remote fault monitoring device only if both tests are passed. The fault monitoring device is configured to apply an alert ranking algorithm to determine which of a plurality of the fault current detection devices is closest to a fault. The alert ranking algorithm includes identifying or establishing a location of an upstream source associated with the fault current detection devices and classifying the fault current detection device which is the furthest downstream from the upstream source as the closest to the fault. A fault current detection method and a fault detection system and method are disclosed.
The invention relates to a fault current detection device for an overhead power line. The fault current detection device is configured to apply a fault detection algorithm which includes a duration test and a return to normal test. The fault current detection device reports a fault current to a remote fault monitoring device only if both tests are passed. The fault monitoring device is configured to apply an alert ranking algorithm to determine which of a plurality of the fault current detection devices is closest to a fault. The alert ranking algorithm includes identifying or establishing a location of an upstream source associated with the fault current detection devices and classifying the fault current detection device which is the furthest downstream from the upstream source as the closest to the fault. A fault current detection method and a fault detection system and method are disclosed.
A transformer temperature fogging device includes a temperature sensor and an attachment mechanism for removably attaching the device to a transformer whose temperature is to be measured. A communication module is used for communicating with a remote computer, which communication includes transmitting sensed temperature measurements to the remote computer. A processor is used to control the operation of the device and a battery provides power to the device. The device also includes a heat resistant shield and a handle which is sized to engage with an elongate installing device. The installing device is able to engage with the handle and is then used to lift the temperature logging device in order to attach the temperature logging device to a transformer that is located on top of a pole out of reach of the installer.
The invention relates to an apparatus for use on a cable, particularly to a power line or cable inspection and/or monitoring apparatus or robot. The apparatus typically comprises a power module to power the apparatus, a pair of links serially coupled via at least one joint, a gripper arrangement coupled to each link for attaching the apparatus to the cable, wherein each gripper arrangement is controllable to grip and/or release the cable as an end effector, and grip the cable as a base in a serial manipulator fashion; and a control arrangement configured at least to control displacement of the links and the gripper arrangements to grip and/or release the cable. The invention also extends to a method of inspecting and/or monitoring a cable; an inspection and/or monitoring system for inspecting a cable; and to a method of operating an apparatus on an elongate cable to avoid an obstacle.
G06F 19/00 - Digital computing or data processing equipment or methods, specially adapted for specific applications (specially adapted for specific functions G06F 17/00;data processing systems or methods specially adapted for administrative, commercial, financial, managerial, supervisory or forecasting purposes G06Q;healthcare informatics G16H)
F16M 13/02 - Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
G01N 21/952 - Inspecting the exterior surface of cylindrical bodies or wires
H02G 1/02 - Methods or apparatus specially adapted for installing, maintaining, repairing, or dismantling electric cables or lines for overhead lines or cables
A fault location detection method includes detecting an EMI signal and analyzing the spectral content of the electrical signal to identify a fault. A location recorder records the location of the system when the EMI signals are detected and a processor analyses the EMI signals and records the location of the system to determine a location of the fault. A memory includes an aerial photograph of a geographic location within which faults are to be detected and wherein the processor overlays the position of the faults on the aerial photograph. In addition, a transparent intensity map is superimposed onto a satellite photo of a geographic location and this is displayed to a user.
The invention relates to an apparatus for use on a cable, particularly to a power line or cable inspection and/or monitoring apparatus or robot. The apparatus typically comprises a power module to power the apparatus, a pair of links serially coupled via at least one joint, a gripper arrangement coupled to each link for attaching the apparatus to the cable, wherein each gripper arrangement is controllable to grip and/or release the cable as an end effector, and grip the cable as a base in a serial manipulator fashion; and a control arrangement configured at least to control displacement of the links and the gripper arrangements to grip and/or release the cable. The invention also extends to a method of inspecting and/or monitoring a cable; an inspection and/or monitoring system for inspecting a cable; and to a method of operating an apparatus on an elongate cable to avoid an obstacle.
The invention relates to an apparatus for use on a cable, particularly to a power line or cable inspection and/or monitoring apparatus or robot. The apparatus typically comprises a power module to power the apparatus, a pair of links serially coupled via at least one joint, a gripper arrangement coupled to each link for attaching the apparatus to the cable, wherein each gripper arrangement is controllable to grip and/or release the cable as an end effector, and grip the cable as a base in a serial manipulator fashion; and a control arrangement configured at least to control displacement of the links and the gripper arrangements to grip and/or release the cable. The invention also extends to a method of inspecting and/or monitoring a cable; an inspection and/or monitoring system for inspecting a cable; and to a method of operating an apparatus on an elongate cable to avoid an obstacle.
A method for the preparation of zeolites from non-fused fly ash includes the steps of preparing an aqueous alkali hydroxyl solution and mixing the solution with the non-fused fly ash to create an aqueous alkali hydroxyl fly ash mixture, subjecting the mixture to ultrasonication and recovering the zeolites. The method may include the step of centrifuging the aqueous alkali hydroxyl fly ash mixture and washing the solid synthetic products (zeolites).
C01B 37/02 - Crystalline silica-polymorphs, e.g. silicalites
C01B 39/02 - Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
9.
Time domain electromagnetic interference monitoring method and system
This invention relates to a method of, and a system for, monitoring electromagnetic interference. The method comprising capturing a plurality of time domain waveforms, and a plurality of scatter plots; receiving the plurality of captured time domain waveforms and scatter plots; applying a fast fourier transform (FFT) to each of the received time domain waveforms as it is received thereby to receive FFT outputs; storing the FFT outputs in a database; generating a statistically representative spectrograph or spectrogram in the frequency domain based on at least the stored FFT outputs and scatter plots or data associated with the scatter plots, combining constituent FFTs of the statistically representative spectrograph or spectrogram in such a manner as to emulate the result that would be produced by an EMI (Electromagnetic Interference) receiver or spectrum analyzer; and combining resultant outputs from a number of iterations of this process to produce a final result (EMI spectrum).
This invention relates to a method of and system for monitoring shaft signals associated with a shaft of a rotating machine. The method comprising receiving voltage signals associated with the shaft; receiving current signals associated with the shaft; determining, from the received voltage and current signals, voltage and current data relating to the machine; presenting at least some of the determined voltage and current data to a user; trending at least the determined voltage data to at least determine voltage data trends associated with the machine; and determining from the voltage and current data if a fault condition has occurred and generating an alarm signal or condition in response thereto.
A method of repairing a metallic artefact (40) with an open defect in or on a metallic surface or substrate of the metallic artefact includes cold forging the open defect to close the open defect and thereafter laser cladding the cold forged defect with a plurality of laser clad beads (44) applied to the metallic surface or substrate to cover the cold forged defect with a cladded metal layer. Advantageously, in-situ repair of fluid-filled vessels, pipes or the like is made possible by the repair method, in some instances eliminates the need to shut equipment down thereby reducing downtime and the cost associated with lost production.
The invention relates to a method and system of monitoring partial discharges occurring in an electrical system, and to a method of measuring or analyzing partial discharges occurring in an electrical system. The method comprising receiving a signal or impulse, or information associated therewith, from the electrical system; breaking the received signal or impulse into predefined frequency components; and displaying a peak of the received signal or impulse on a scatter plot with other peaks associated with similar predefined frequency components.
G01R 31/02 - Testing of electric apparatus, lines, or components for short-circuits, discontinuities, leakage, or incorrect line connection
G01R 31/12 - Testing dielectric strength or breakdown voltage
G01R 1/00 - MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES - Details of instruments or arrangements of the types covered by groups or
H01L 21/00 - Processes or apparatus specially adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
H01B 1/00 - Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
H02J 1/00 - Circuit arrangements for dc mains or dc distribution networks
H02B 1/00 - BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER - Details of substations or switching arrangements
13.
Monitoring partial discharge in high voltage systems
A method and device for monitoring partial discharges in high voltage electrical or power systems is provided. A low trigger level and a high trigger level electrical pulse amplitude levels are defined. At least one phase of the electrical system is monitored for an occurrence of a pulse within a defined minor time frame. A peak amplitude of a pulse occurring in the electrical system within the minor time frame is detected. It is determined if the detected peak amplitude of the pulse exceeds the lower and higher trigger levels. A pulse number is assigned to the pulse if the peak amplitude of the pulse exceeds the trigger levels. The pulse is captured if the pulse number associated with the pulse is less than a predetermined pulse number threshold in the minor time frame. The captured pulses are stored in a memory.
The present disclosure discloses a method (310, 330, 350, 370) of demand side electrical load management and an associated apparatus (104) and system (100). The method (310, 330, 350, 370) includes providing (336, 318) a consumer of electricity with an indication of instantaneous electricity consumption. The method (310, 330, 350, 370) further includes determining (382) an electricity consumption threshold for the consumer, in response to a determination that load limiting is required and providing (384, 356, 338, 320, 322) the consumer with an indication of the electricity consumption threshold and an indication of a time period within which the consumer must limit his/her electricity consumption to comply with the electricity consumption threshold. The method (310, 330, 350, 370) also includes interrupting (360, 340, 342, 324) supply of electricity to the consumer in response to the electricity consumption of the consumer violating the electricity consumption threshold after the time period has elapsed.
G01M 1/38 - Combined machines or devices for both determining and correcting unbalance
G05B 21/00 - Systems involving sampling of the variable controlled
G05B 13/00 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
This invention relates to a method of, and a system for, monitoring electromagnetic interference. The method comprising capturing a plurality of time domain waveforms, and a plurality of scatter plots; receiving the plurality of captured time domain waveforms and scatter plots; applying a fast fourier transform (FFT) to each of the received time domain waveforms as it is received thereby to receive FFT outputs; storing the FFT outputs in a database; generating a statistically representative spectrograph or spectrogram in the frequency domain based on at least the stored FFT outputs and scatter plots or data associated with the scatter plots, combining constituent FFTs of the statistically representative spectrograph or spectrogram in such a manner as to emulate the result that would be produced by an EMI (Electromagnetic Interference) receiver or spectrum analyser; and combining resultant outputs from a number of iterations of this process to produce a final result (EMI spectrum).
G01R 27/28 - Measuring attenuation, gain, phase shift, or derived characteristics of electric four-pole networks, i.e. two-port networks; Measuring transient response
G01R 31/00 - Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
16.
TIME DOMAIN ELECTROMAGNETIC INTERFERENCE MONITORING METHOD AND SYSTEM
This invention relates to a method of, and a system for, monitoring electromagnetic interference. The method comprising capturing a plurality of time domain waveforms, and a plurality of scatter plots; receiving the plurality of captured time domain waveforms and scatter plots; applying a fast fourier transform (FFT) to each of the received time domain waveforms as it is received thereby to receive FFT outputs; storing the FFT outputs in a database; generating a statistically representative spectrograph or spectrogram in the frequency domain based on at least the stored FFT outputs and scatter plots or data associated with the scatter plots, combining constituent FFTs of the statistically representative spectrograph or spectrogram in such a manner as to emulate the result that would be produced by an EMI (Electromagnetic Interference) receiver or spectrum analyser; and combining resultant outputs from a number of iterations of this process to produce a final result (EMI spectrum).
G01R 29/08 - Measuring electromagnetic field characteristics
G01R 31/00 - Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
G01R 27/28 - Measuring attenuation, gain, phase shift, or derived characteristics of electric four-pole networks, i.e. two-port networks; Measuring transient response
This invention relates to a method of and system for monitoring shaft signals associated with a shaft of a rotating machine. The method comprising receiving voltage signals associated with the shaft; receiving current signals associated with the shaft; determining, from the received voltage and current signals, voltage and current data relating to the machine; presenting at least some of the determined voltage and current data to a user; trending at least the determined voltage data to at least determine voltage data trends associated with the machine; and determining from the voltage and current data if a fault condition has occurred and generating an alarm signal or condition in response thereto.
This invention relates to a method of and system for monitoring shaft signals associated with a shaft of a rotating machine. The method comprising receiving voltage signals associated with the shaft; receiving current signals associated with the shaft; determining, from the received voltage and current signals, voltage and current data relating to the machine; presenting at least some of the determined voltage and current data to a user; trending at least the determined voltage data to at least determine voltage data trends associated with the machine; and determining from the voltage and current data if a fault condition has occurred and generating an alarm signal or condition in response thereto.
A method of and system for processing stray flux data associated with a synchronous electrical machine; the method comprising capturing stray flux data from the synchronous electrical machine; generating a stray flux waveform using at least the captured stray flux data; analysing the generated stray flux waveform and the captured stray flux data; and storing the generated stray flux waveform and the captured stray flux data in a database.
patents
