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Fault positioning method and device for gas-insulated metal-enclosed power transmission line

A technology for gas-insulated metal and power transmission lines, which is applied to fault locations, fault detection by conductor type, measurement devices, etc., can solve problems such as low fault location sensitivity, and achieve the effect of avoiding further development, sensitive fault location, and improving accuracy.

Active Publication Date: 2021-03-30
FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this solution still cannot solve the technical problem of low fault location sensitivity

Method used

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  • Fault positioning method and device for gas-insulated metal-enclosed power transmission line
  • Fault positioning method and device for gas-insulated metal-enclosed power transmission line
  • Fault positioning method and device for gas-insulated metal-enclosed power transmission line

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Effect test

Embodiment 1

[0062] Such as figure 1 As shown, this embodiment provides a fault location method for gas-insulated metal-enclosed transmission lines, including the following steps:

[0063] S1: Acquire the sound analog signal of each unit structure through the online monitoring equipment configured separately.

[0064] In the embodiment of the present invention, the gas-insulated metal-enclosed transmission line (that is, GIL equipment) includes a plurality of unit structures 201 connected in sequence, and each unit structure 201 is equipped with a set of online monitoring equipment. Taking a unit structure 201 as an example, as figure 2 As shown, the online monitoring equipment includes an acceleration vibration sensor 202 and an environmental noise sensor 203, wherein the acceleration vibration sensor 202 is arranged on the upper surface of the unit structure 201, and the environmental noise sensor 203 is arranged near the unit structure 201, and the acceleration vibration sensor 202 and...

Embodiment 2

[0110] Such as image 3 As shown, this embodiment provides a fault location device for a gas-insulated metal-enclosed transmission line, wherein the gas-insulated metal-enclosed transmission line includes a plurality of unit structures connected in sequence, and each unit structure is equipped with a set of on-line monitoring equipment; The positioning device includes a collection unit 301, a determination unit 302 and a positioning unit 303, wherein:

[0111] The collection unit 301 is used to collect the sound analog signal of each unit structure through the online monitoring equipment configured respectively.

[0112] The determining unit 302 is configured to, after processing the sound analog signal of each unit structure, determine the unit structure corresponding to the sound analog signal with abnormal sound characteristics as a defective unit structure.

[0113] The locating unit 303 is configured to determine the defective unit structure as a faulty unit structure wh...

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Abstract

The invention discloses a fault positioning method and device for a gas-insulated metal-enclosed power transmission line. The fault positioning method comprises the steps of monitoring each unit structure of the gas-insulated metal-enclosed power transmission line in real time through online monitoring equipment, capturing a sound analog signal with an abnormal sound feature, and determining a defect unit structure with an abnormal sound. According to the fault positioning method and the device, the internal defects are prevented from being further developed, and when the gas-insulated metal-enclosed power transmission line is broken down, the broken-down fault unit structure is quickly and accurately determined according to the defect unit structure, so that the fault is more sensitivelypositioned.

Description

technical field [0001] The invention relates to the technical field of power transmission lines, and more specifically, to a fault location method and device for a gas-insulated metal-enclosed power transmission line. Background technique [0002] Gas Insulated Metal Enclosed Transmission Line (GIL) is an underground transmission line with high voltage level, large transmission capacity and long transmission distance, also known as pipeline transmission line or GIL equipment. It adopts aluminum alloy conductor and shell, and uses epoxy support insulator to support the conductor, so that the conductor is fixed in the center of the shell, and SF6 gas or a mixed gas of SF6 and N2 is filled between the conductor and the shell to ensure the connection between the conductor and the shell The insulation level between. GIL equipment generally includes multiple unit structures, and typical unit structures mainly include five types: standard straight section unit, standard partition ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08G01R31/12
CPCG01R31/083G01R31/1209G01R31/1281Y04S10/52
Inventor 杨帅张姣罗向源杨毅孙钦章陈解选刘侃廖嘉伟
Owner FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
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