GIS switch cabinet on-line detecting system based on surface acoustic wave

Abstract

The invention discloses a GIS switch cabinet on-line detecting system based on the surface acoustic wave. The GIS switch cabinet on-line detecting system based on the surface acoustic wave comprises a plurality of SAW sensors, a transmitting-receiving device of radio-frequency signal, a collector of the SAW sensors, a background monitoring system and a fixing mechanism of the SAW sensors; the SAW sensors is fixed in a GIS switch cabinet through the fixing mechanism of the SAW sensors; corresponding frequency signals are transmitted to each SAW sensor through the transmitting-receiving device of radio-frequency signal through the collector of the SAW sensors, and signals of SAW sensors retuning frequency are collected; the data are transmitted to the background monitoring system through communication; each SAW sensor comprises a plurality of SAW temperature sensors. According to the GIS switch cabinet on-line detecting system based on the surface acoustic wave, all kinds of physical quantities such as temperature, sensor and moisture in the GIS switch cabinet are measured through the SAW sensors, the operating state of whole equipment can be reflected through the variation of the physical quantities, and the data are collected through the collector of the SAW sensors uniformly and is transmitted to the monitoring system and a background through a communication-extending mode uniformly, so that the on-line detecting is realized.

Description

technical field [0001] The invention relates to a GIS switch cabinet online detection system based on acoustic surface waves. Background technique [0002] The full name of GIS switchgear is SF6 gas insulated metal-enclosed switchgear. SF6 gas is sulfur hexafluoride gas. It is a colorless, odorless, non-toxic and non-flammable inert gas. GIS switchgear has high requirements on air tightness, and maintenance and repair are more complicated. At the same time, because the insulating gas in GIS switchgear generally uses SF6, when the SF6 gas contains a certain amount of water, the internal circuit breaker will open and close. The arc energy generated during the operation can generate highly toxic gas in the gas. When the highly toxic gas leaks, a small amount of gas inhaled by the human body can be fatal. Due to the special structure and all-metal sealing requirements of GIS switchgear, the abnormal heating state of the internal busbar and circuit breaker contacts cannot be det...

AI Technical Summary

Problems solved by technology

However, there is currently no suitable sensor for on-line status monitoring of SF6 gas-insulated metal-enclosed switchgear, which makes it difficult to realize this type of on-line monitoring of switchgear.

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