GIS insulation state diagnosis method based on gas component analysis
A technology of insulation state and diagnosis method, which is applied in the field of electric power, can solve problems such as the inability to accurately establish the corresponding relationship between gas components and defect types, and achieve the effects of online diagnosis, easy application and promotion, and strong scalability
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[0034] The invention aims to establish a GIS insulation state diagnosis method based on gas composition analysis. Based on the measurement and analysis of the concentration of SF6 decomposition components in the GIS gas chamber, the type and severity of the internal defects of the equipment are identified, and the basis for the fault diagnosis and subsequent treatment of the equipment is provided.
[0035] The present invention proposes typical gas decomposition components and their content change trends under different types of internal insulation defects, and finally abstracts a simple and feasible concentration ratio method for diagnosis of GIS insulation status. In the specific implementation of the present invention, the test cavity adopted includes a defect simulation tank with a volume of 9.5L and 90L with the inner wall sprayed with a polytetrafluoroethylene layer, ZF10-126(L) and ZF11-252(L) GIS equipment ; The three types of defects involved are metal protrusion corona ...
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