Chemical diagnosis method for discharge fault of GIS device

Abstract

The invention discloses a chemical diagnosis method for discharge fault of a GIS device. A current chemical diagnosis method only can give a quite limited opinion on whether a device is in a fault state. The chemical diagnosis method includes the steps: 1) setting a characteristic reaction group A; 2) setting an external reaction group B; 3) setting a base reaction group C; 4) carrying out orthogonal reaction of the reaction group A with the reaction group A, the reaction group B and the reaction group C respectively to obtain reaction result groups RSA, RSB and RScx; and 5) taking an on-sitegas sample, obtaining gas sample components by a gas chromatography-mass spectrometry method, constructing a set S with the obtained gas components except SF6 and the content, comparing the S with RSA, RSB and RScx, and finally determining the discharge fault type and discharge position. The GIS device running state is accurately judged and the checking scope of the discharge fault position is greatly reduced by using sulfur hexafluoride chromatographic analysis results, the intelligence level of the GIS device state maintenance is greatly increased, and the difficulty of analysis of the equipment fault reason is reduced.

Description

technical field [0001] The invention relates to the field of fault diagnosis of GIS equipment, in particular to a method for qualitatively locating and diagnosing GIS equipment discharge faults based on the detection of sulfur hexafluoride gas decomposition products. Background technique [0002] GIS equipment may discharge internally due to various reasons during operation, so it is particularly important to judge the type and location of equipment discharge to monitor the operating status of GIS equipment; among them, the chemical diagnosis method based on the decomposition products of sulfur hexafluoride gas, due to It has the characteristics of high speed, non-destructive test and no need to add sensor equipment, so it has been paid attention to in the condition-based maintenance of GIS equipment. However, the current chemical diagnostic methods can only give very limited opinions on whether the equipment is in a fault state due to the limitation of diagnostic means. ...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects in the prior art, such as the low detection accuracy of sulfur hexafluoride gas decomposition characteristic gas, and the inability to locate the fault location, etc., and provide a new six- Sulfur fluoride electrolysis characteristic gas and its analysis method are widely used in discharge fault diagnosis of GIS equipment in power system

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