某750 kV变电站线路异常原因分析

Analysis of Abnormal Line in a 750 kV Substation

根据某750 kV变电站断路器跳闸后重合成功的情况,以及重合闸后带电检测和停电解体检查情况,对该断路器跳闸的原因进行了详细分析,判断线路异常原因为吸附剂颗粒散落在筒体中导致电场畸变,从而间隙击穿。可为避免类似异常问题的发生,确保GIS设备的安全稳定运行积累经验。

According to the successful reclosing of a circuit breaker in a 750 kV substation after tripping,as well as the live detection and battery inspection after reclosing,the reasons for the tripping of the circuit breaker are analyzed in detail,and it is determined that the reason for the abnormality of the line is that the adsorbent particles are scattered in the Distortion of the electric field is caused in the barrel,resulting in the breakdown of the gap.It can accumulate experience for avoiding the occurrence of similar abnormal problems and ensuring the safe and stable operation of GIS equipment.