摘要
对一起由于测控装置同期开入回路受到电磁干扰后误动,造成主变压器中压侧断路器误合闸的严重事故进行了详细分析,并说明了电磁干扰使得光耦元件“瞬态饱和”的现象和原理,指出了测控装置设计不当的地方,并由制造厂家进行了改进。
This paper detailedly analyzes a circuit breaker misclosing accident on the medium-voltage side of a main transformer, which resulted from misoperation of the measurement and control device under electromagnetic interference （EMI）. It also explains the phenomenon and theory of transient saturation of light-coupled devices. Aiming at the improper design of the measurement and control device, an improvement has been made by the manufacturer.
出处
《广东电力》
2006年第8期52-55,共4页
Guangdong Electric Power
关键词
测控装置
电磁干扰
瞬态饱和
误合闸
measurement and control device
electromagnetic interference （EMI）
transient saturation
misclosing of circuit breaker
