气体绝缘开关设备特性与在线监测原理

Characteristics and On-Line Monitoring Principle of Gas Insulated Switchgear

气体绝缘开关设备具有强环境适应能力、强绝缘等级、高可靠性、高防护等级等特性,是变电站的重要设备之一,对其进行智能化改造是智能化变电站建设的重要组成部分。在分析气体绝缘开关设备的高可靠性、高绝缘等级后,总结了该设备需实时在线监测的状态量为局部放电,并根据需监测的状态量提出几种监测方法。根据气体绝缘开关设备的故障发生率与传感器的使用寿命,得出进行局部放电实时监测的时间应为设备投入运行10年左右。

Gas-insulated switchgear has the characteristics of strong environmental adaptability,strong insulation grade,high reliability,high protection grade,and it is one of the important equipments in substation.Intelligent transformation of it is an important part of intelligent substation construction.After analyzing the high reliability and high insulation grade of gas-insulated switchgear,it is concluded that the state quantity to be monitored on-line in real time is partial discharge,and several monitoring methods are put forward according to the state quantity to be monitored.According to the failure rate of gas insulated switchgear and the service life of the sensor,it is concluded that the time for real-time monitoring of partial discharge should be about 10 years after the equipment is put into operation.