On-line monitoring management system of GIS ultrahigh frequency partial discharge

Abstract

The invention discloses an on-line monitoring management system of GIS ultrahigh frequency partial discharge. An existing various GIS monitoring system is limited to the diagnosis of defects of the GIS ultrahigh frequency partial discharge, and ignores the unified management of GIS equipment. The on-line monitoring management system of the GIS ultrahigh frequency partial discharge comprises a signal collecting subsystem, a data processing analyzing subsystem and an equipment management subsystem. According to the signal collecting subsystem, a partial discharge signal of the GIS equipment is received through a UHF sensor, the partial discharge signal is converted to a voltage signal, and then the voltage signal is enlarged by a signal-amplifier, data are transmitted to a collecting controlunit to be stored the data, and the data are sent to an upper computer main control platform through an optical fiber. The data processing analyzing subsystem uses wavelet algorithm to carry out noise reduction process on the partial discharge signal, and realizes spectrogram display and partial discharge warning. The on-line monitoring management system of the GIS ultrahigh frequency partial discharge integrates fault monitoring diagnosis and maintenance management of the equipment, can intelligently analyze the operating condition of electrical equipment and possible discharge defect types,and meanwhile, can manage the equipment conveniently.

Description

technical field [0001] The invention belongs to the field of GIS UHF partial discharge online monitoring, in particular to a GIS UHF partial discharge online monitoring management system integrating monitoring and management. Background technique [0002] SF 6 Gas-insulated metal-enclosed switchgear refers to GIS (Gas Insulated Switchgear: gas-insulated metal-enclosed switchgear), PASS, H-GIS, etc., all or part of which use gas insulation instead of air under natural pressure as metal-enclosed switchgear insulating medium. After more than 40 years of development, GIS has been widely used in power systems due to its small footprint, compact structure, small external interference, stable and reliable operation, and many other advantages, and occupies an important position in power systems all over the world. [0003] The main manifestation of GIS insulation fault is partial discharge. Due to various faults in the manufacturing process, transportation, installation and other ...

AI Technical Summary

Problems solved by technology

[0004] There are already a lot of GIS partial discharge monitoring equipment on the market. They can not only effectively judge whether partial discharge has occurred in GIS equipment, but also can intelligently identify the type of partial discharge and even locate the location of partial discharge. However, the current research and development Various monitoring systems are limited to the diagnosis of GIS partial discharge defects, ignoring the unified management of GIS equipment, that is, failing to integrate fault monitoring and diagnosis, equipment maintenance and management

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