电流互感器精度不当引起变压器保护误动浅析

Influence of instrument transformer accuracy to the prevention misoperation of transformer

通过对铜川矿业有限公司供用电分公司由于电流互感器精确度选择不当,造成主变差动保护误动的事故案例进行分析,指出了电流互感器精确度选择对供用电安全的重要性,具有一定的借鉴意义。

By the accident analysis of the prevention misoperation of transformer caused by the current transformer accuracy in Tongchaun Power Supply Branch,the importance of the choice of current transformer accuracy to power supply security is pointed out.