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GIS partial discharge signal measurement system and GIS partial discharge fault diagnosis method

A partial discharge and discharge signal technology, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., to achieve the effects of accurate pulse current partial discharge signals and UHF partial discharge signals, strong field operability, and easy implementation

Active Publication Date: 2020-08-21
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology

[0005] The present invention proposes a GIS partial discharge signal measurement system and a partial discharge fault diagnosis method to solve the problem of how to accurately and quickly determine GIS partial discharge faults

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  • GIS partial discharge signal measurement system and GIS partial discharge fault diagnosis method
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  • GIS partial discharge signal measurement system and GIS partial discharge fault diagnosis method

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Embodiment Construction

[0034] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0035] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

The invention discloses a GIS partial discharge signal measurement system, which can synchronously and respectively acquire pulse current partial discharge signals and ultrahigh frequency partial discharge signals inside and outside a metal shielding box of a GIS. Based on the GIS partial discharge signal measurement system, the invention provides a GIS partial discharge fault diagnosis method, which determines a GIS partial discharge fault according to the obtained partial discharge signal and a preset partial discharge fault criterion. Due to the fact that suspension shielding measurement isadopted, external interference can be effectively restrained, and the measured pulse current partial discharge signals and ultrahigh frequency partial discharge signals are more accurate; because thecharacteristic values of the pulse current partial discharge signal and the ultrahigh frequency partial discharge signal are used as a basis for judging whether the GIS has a partial discharge defector not, the method has the advantages of strong field operability, accurate judgment, sensitive reaction, quantitative judgment, easiness in implementation and the like, and can be widely applied tothe diagnosis of the GIS partial discharge fault.

Description

technical field [0001] The invention relates to the technical field of GIS partial discharge fault diagnosis, and more specifically, to a GIS partial discharge signal measurement system and a GIS partial discharge fault diagnosis method. Background technique [0002] Gas Insulated Switchgear GIS (Gas Insulated Switchgear) is the key equipment of the power system, and its main function is to cut off the fault of the power system and change the operation mode of the system. With the increase of the scale of my country's power grid, GIS faults occur frequently. In order to ensure the quality of GIS products, pulse current partial discharge tests are required in the factory test to diagnose GIS partial discharge faults. [0003] However, in the GIS partial discharge factory test, due to the complex factory environment, the pulse current partial discharge test is often subject to electrical interference from power supplies and heavy equipment, resulting in low partial discharge m...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
CPCG01R31/1254Y04S10/52
Inventor 杨宁许渊李丽华贾鹏飞张博文韩帅杨洋高飞
Owner CHINA ELECTRIC POWER RES INST
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