Diagnosis method and system for gis loop defect based on hot-reversed mother operation

Abstract

The present invention provides a GIS circuit defect diagnosis method and system based on the operation of the bus-reversing hot bus, wherein the method includes: operating the bus-tie circuit of each line in the substation by hot-swapping the bus, judging whether the three-phase current of the bus-tie circuit is balanced and recording Balance result; judge whether there is a defect in the bus tie circuit according to the balance result: if the three-phase current of the bus tie circuit of all lines is balanced, then the said bus tie circuit has no defect; if only the bus tie circuit of a single line has three-phase current unbalanced, the isolating switch in the bus tie circuit of this line is defective; if the three-phase current imbalance occurs in the bus tie circuits of multiple lines, the bus of the bus tie circuit is defective, and the defective section of the bus is further located until the diagnosis Finish. The present invention can be controlled remotely in the intelligent monitoring operation center, which saves the cumbersome link of on-site loop resistance measurement, saves a lot of manpower and material resources, and also reduces the risk of electric shock caused by misoperation.

Description

technical field [0001] The invention relates to the technical field of fault diagnosis of power equipment, in particular to a GIS circuit defect diagnosis method and system based on thermal switching operation. Background technique [0002] GIS equipment is a gas-insulated fully-sealed switchgear. It is widely used in modern power grids. It integrates isolating switches, circuit breakers, transformers (voltage and output current), grounding devices, lightning protection devices, cables and busbars. In one body, its own advantages are also very significant: small size, light weight, modular design integrating many functions, high reliability. Since GIS equipment is a key equipment, once the equipment itself has a problem, it will be difficult to repair and the maintenance cost will be high, resulting in huge losses, which may cause large-scale power outages. [0003] In the prior art, some digital X-ray imaging detection systems are used to detect equipment, mainly because t...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a GIS loop defect diagnosis method and system based on the operation of the heat-reversing mother, so as to solve the technical problems in the prior art that consume a lot of manpower and material resources and cause a high risk of electric shock due to misoperation

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