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Cable partial discharge high-precision positioning and noise removing method and device

A partial discharge, high-precision technology, applied in the direction of measuring devices, testing dielectric strength, measuring electricity, etc., can solve the lack of cost-effective monitoring solutions for distribution cables, cannot record the cable aging process in real time, and cannot reflect cable degradation and faults and other issues, to achieve the effect of time synchronization and positioning, improve efficiency, and ensure safety

Active Publication Date: 2020-08-18
GUANGXI POWER GRID CO LTD NANNING POWER SUPPLY BUREAU
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Problems solved by technology

Both methods are offline detection methods, which cannot reflect the short-term deterioration and failure of the cable, and cannot record the cable aging process in real time
The main methods applied to online monitoring of high-voltage cables (optical fiber temperature measurement, joint partial discharge, ground circulation, etc.) are limited in cost and are not suitable for large-scale promotion on distribution cables, and distribution cables lack economical and effective monitoring solutions. For this reason, the present invention A method and device for cable partial discharge high-precision positioning and noise removal are proposed

Method used

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  • Cable partial discharge high-precision positioning and noise removing method and device
  • Cable partial discharge high-precision positioning and noise removing method and device
  • Cable partial discharge high-precision positioning and noise removing method and device

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Embodiment approach

[0025] As a preferred embodiment of the present invention, a processor and a storage battery 13 are installed in the housing 1, the processor is electrically connected to the current transformer 11, and the storage battery 13 is electrically connected to the processor through a power supply circuit, The processor is electrically connected to the arc-shaped metal splint 10 through a communication circuit.

[0026] As a preferred embodiment of the present invention, a round handle 14 is fixedly installed at one end of the screw rod 8 .

[0027] As a preferred embodiment of the present invention, there are two screw rods 8 , insulating rods 9 and arc-shaped metal splints 10 .

[0028] A method for high-precision positioning and noise removal of cable partial discharge, comprising the following steps:

[0029] Step 1: The transformers at both ends are synchronized; the long-distance monitoring of the partial discharge of the medium-voltage cable is realized by installing a measur...

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Abstract

The invention provides a cable partial discharge high-precision positioning and noise removing method and device. The device comprises a shell and a display screen, a mounting groove is formed in thetop of the shell; the display screen is mounted in the mounting groove through a rotating shaft; a first circular groove is formed in the front side of the shell. A second circular groove is formed inthe center of the inner side wall, away from the open end, of the first circular groove. A limiting sliding rod is fixedly installed between the inner side walls of the two sides of the second circular groove. The cable partial discharge high-precision positioning and noise removing method and device are reasonable in design, a stable and efficient synchronization mechanism suitable for the underground environment is provided, a double-end communication mechanism which takes the cable as a propagation channel and does not depend on the external environment is established at the two ends of the cable, then time synchronization and positioning are achieved, and therefore the positioning precision is improved.

Description

technical field [0001] The invention belongs to the technical field of cable partial discharge monitoring, in particular to a method and device for high-precision positioning and noise removal of cable partial discharge. Background technique [0002] At present, the main detection methods for distribution cables are cable oscillatory wave partial discharge detection and 0.1Hz ultra-low frequency sine wave detection. Both methods are offline detection methods, which cannot reflect the short-term deterioration and failure of the cable, and cannot record the cable aging process in real time. The main methods applied to online monitoring of high-voltage cables (optical fiber temperature measurement, joint partial discharge, ground circulation, etc.) are limited in cost and are not suitable for large-scale promotion on distribution cables, and distribution cables lack economical and effective monitoring solutions. For this reason, the present invention A method and device for hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12G06K9/00G06N3/02
CPCG01R31/1272G06N3/02G06F2218/06Y04S10/40
Inventor 李江伟李绍坚林瑞胜李元良王成成严兴龙黄翰民刘文韬
Owner GUANGXI POWER GRID CO LTD NANNING POWER SUPPLY BUREAU
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