电压互感器与开关断口电容铁磁谐振的分析与预防  

ANALYSISAND PREVENTION OF FERROMAGNETIC RESONANCE BETWEEN VOLTAGE TRANSDUCER AND SWITCHED FRACTURE CAPACITOR

作　　者：赵翠宇[1] 管益斌 

机构地区：[1]南京工程学院,江苏省南京市210013 [2]江苏电力调度通信中心,江苏省南京市210024

出　　处：《电力系统自动化》2002年第2期72-74,共3页Automation of Electric Power Systems

摘　　要：在电力系统中 ,由于电磁式电压互感器具有磁饱和性 ,使得其与开关断口电容有可能发生串联铁磁谐振。文中从理论上分析了串联铁磁谐振发生的原因 ,指出发生谐振时会产生过电流与过电压 ,从而对系统中的设备产生较大的危害。通过对南京地区以往发生的几起事故的分析 。Series ferrom agnetic resonance often happens between the transducer and the switched fracture capacitor because of the characteristic of m agnetic saturation of the electromagnet- induced voltage transducer in power system . In this paper,the reason for series ferrom agnetic resonance is therefore theoretically analyzed.And it is pointed out thatthe resonance will lead to over- current and over- voltage,which seriously damages the devices of power system . In particular,in view of the situation of power system atpresent,the methods and countermeasures of preventing and dealing with the resonance are presented also based on the analysis of former accidents in Nanjing area.

关 键 词：电压互感器 开关断口电容 串联铁磁谐振 分析 预防 

分 类 号：TM53[电气工程—电器]