SF6 gas detection system and method for GIS airtightness test

Abstract

The invention discloses an SF6 gas detection system for a GIS air tightness test, which comprises a buckle cover, a multi-point sampler, a photoacoustic spectrum gas analyzer and a PC terminal, and is characterized in that the buckle cover comprises a housing, fresh air pipelines and a fresh air fan, the housing forms a closed detection space and is used for accommodating a to-be-detected GIS, a plurality of fresh air pipelines are laid in the detection space, and the plurality of fresh air pipelines are connected with the fresh air fan; the multi-point sampler is used for connecting each high-voltage switch acquisition point of the GIS in the buckle cover with the photoacoustic spectrum gas analyzer; and the photoacoustic spectrum gas analyzer is used for controlling the multi-point sampler to carry out gas collection and switching on the collection points of the high-voltage switch, carrying out real-time monitoring and analysis on each collection point through gas path switching of the multi-point sampler, and sending an analysis result to the PC terminal. The system can perform gas detection on each test point of the GIS in real time, has the advantages of remote operation, no need of field operation and the like, and realizes unattended operation.

Description

technical field [0001] The invention relates to the technical field of electric equipment detection, in particular to the GIS air tightness test SF 6 Gas detection system and method. Background technique [0002] With the rapid development of the electric power industry in the direction of high voltage and ultra-high voltage, the demand for gas-insulated fully enclosed combined electrical appliances (GIS) is also increasing. SF 6 As a gas with good electrical insulation performance and excellent arc extinguishing performance, it is widely used in GIS. The airtightness of GIS is not only related to its own service life and maintenance cost, but also affects the safety of operators and the greenhouse effect of the environment. [0003] However, judging from the operation situation in recent years, there have been many problems in the operation of GIS at home and abroad, mainly due to the failure caused by the inevitable internal defects. Once a failure occurs, the closed st...

AI Technical Summary

Problems solved by technology

[0004] The current traditional detection method is to conduct regular air tightness detection through a hand-held leak detector. The entire detection process requires a lot of manpower and takes a long time.

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