On-line detection system of gis switchgear based on surface acoustic wave

Abstract

The invention discloses a GIS switch cabinet online detection system based on surface acoustic waves, which includes a plurality of SAW sensors, a radio frequency signal transmitting and receiving device, a SAW sensor collector, a background monitoring system and a sensor fixing mechanism; the plurality of SAW sensors pass through The sensor fixing mechanism is fixed in the GIS switch cabinet; the SAW sensor collector sends the corresponding frequency signal to each SAW sensor through the radio frequency signal transmitting and receiving device, and collects the return frequency signal of the SAW sensor; and transmits the data to the background monitoring system through communication ; The SAW sensor includes a plurality of SAW temperature sensors. The present invention uses SAW sensors to measure various physical quantities (such as temperature, pressure, micro-water) in the GIS switchgear, and the changes of these physical quantities can also reflect the operating status of the entire equipment, and after unified collection by the SAW sensor collector, the data Unified transmission to the monitoring system and background through extended communication, so as to realize online monitoring.

Description

Technical field [0001] The invention relates to a GIS switchgear online detection system based on surface acoustic 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, non-flammable inert gas. It has excellent insulation properties and will not deteriorate. GIS switchgear has high requirements for air tightness, and maintenance and repair are more complicated. At the same time, since the insulating gas in the GIS switchgear generally uses SF6, when the SF6 gas contains a certain amount of water, the internal circuit breaker opens and closes The arc energy generated at the time 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 the GIS switchgear, the abnormal heating state of its internal bu...

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.

Images