一起PT反充电引起变电站全站失压事件分析  

Analysis of a Substation Voltage Loss Accident Caused by PT Reverse Charging

作　　者：刘云 LIU Yun(Yunnan Electric Power Technology Co.,Ltd.,Kunming 650217,China)

机构地区：[1]云南电力技术有限责任公司,云南昆明650217

出　　处：《电工技术》2022年第14期117-118,123,共3页Electric Engineering

摘　　要：某220 kV变电站发生了一起因隔离开关辅助开关接点失灵导致的PT反充电事件,引起该变电站全站失压,对电网的安全稳定运行造成了严重影响。为避免此类事件的再次发生,对引起该变电站全站失压的原因进行了分析,并提出了相关整改措施。A PT reverse charging event occurred in a 220 kV substation due to the failure of the auxiliary switch contact of the disconnector,resulting in the loss of voltage of the whole substation,which has a serious impact on the safe and stable operation of the power grid.In order to avoid the recurrence of this event,the causes of voltage loss of the whole substation are analyzed,and relevant rectification measures are put forward.

关 键 词：辅助开关失灵 PT反充电 电压切换 

分 类 号：TM564[电气工程—电器]