10kV母线零序电压互感器烧损事故分析  

Analysis on the Cause of Burned-out Accident of 10kV Bus Zero Sequence Voltage Transformer

作　　者：贺胜[1] 廖玉祥[1] 甘德刚[2] 张电[1] 冯运[2] 

机构地区：[1]重庆市电力公司江北供电局,重庆401147 [2]四川电力试验研究院,四川成都610072

出　　处：《四川电力技术》2008年第6期43-45,共3页Sichuan Electric Power Technology

摘　　要：在中性点不接地系统中,由于线路单相接地短路、线路断线、操作空母线等原因,在运行中往往容易激发电压互感器发生铁磁谐振,导致电压互感器烧损。对一起10 kV母线零序电压互感器烧损事故的原因进行了分析,针对目前采用较多的4TV接法进行了研究。探讨了零序电压互感器损坏的原因,并从电压互感器的参数设计源头提出了抑制超低频振荡过电流的解决方法。对互感器生产厂家及其他供电单位具有一定的指导意义。This paper starts with the analysis on the cause of burned-out accident of 10kV bus zero sequence voltage transformer and follows by researching on the 4TV method which is adopted widely at present.The paper discusses the cause of damage,and presents the method to restrain the ultra-low frequency oscillation overcurrent based on the design of voltage transformer.It is great significant for voltage transformer manufacturer and other power supply corporations.

关 键 词：零序电压互感器 铁磁谐振 超低频振荡 

分 类 号：TM451[电气工程—电器]