GIS equipment dynamic insulation performance test method and system

Abstract

The invention discloses a GIS equipment dynamic insulation performance test method and system. The method comprises the following steps: carrying out an aging test and a static voltage withstanding test on GIS equipment to be tested; the GIS equipment to be tested is subjected to a preliminary test, and the preliminary test comprises the steps of setting different test voltage values, performing isolation switch operation under different test voltages, and detecting and recording ultrahigh frequency partial discharge signals of an insulation spacer part during operation; counting a preliminary test result, if an accidental partial discharge signal appears in the preliminary test, carrying out a repeated operation test, and judging whether the accidental partial discharge signal has repeatability or not; and if the accidental partial discharge signal has repeatability, indicating that the GIS equipment to be detected has the metal particle defect. According to the method, the switch action is added in the handover test of the GIS equipment, metal particles in the GIS air chamber can be found more easily, the defects of the air chamber are treated before the equipment is put into operation, and stable operation of the equipment is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of electrical equipment testing, and more specifically relates to a method and system for testing dynamic insulation performance of GIS equipment. Background technique [0002] Gas Insulated Switchgear (GIS) has many advantages such as small footprint, high operational reliability, small maintenance workload, and isolation from the surrounding environment. Therefore, GIS technology has developed rapidly since its birth in the 1960s , has been more and more widely used in power systems. In the past, it was generally believed that GIS was an electrical device that did not require maintenance or had a long maintenance period. But from years of operating experience, the insulation failure of GIS equipment is always unavoidable. At present, the operation of GIS equipment is still affected by metal particle defects, and GIS insulation failures caused by free metal particle defects have occurred many times during...

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Problems solved by technology

[0004] In order to solve the deficiencies in the prior art, the object of the present invention is to provide a dynamic insulation performance test method for GIS equipment, which can effectively find metal particle defects that are not easy to be detected in GIS equipment, and avoid the occurrence of metal particle defects after the equipment is put into operation. fault caused by accident

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