一起500kV站用变及差动保护跳闸故障分析及处理  

Analysis and treatment of tripping fault for 500kV station transformer and differential protection

作　　者：牛峥[1] 梁毅灵 Niu Zheng;Liang Yiling(China Souther Grid Corp super high pressure Transmission Companies Guangzhou Bureau,Guangzhou Guangdong,510000)

机构地区：[1]中国南方电网有限责任公司超高压输电公司广州局,广东广州510000

出　　处：《电子测试》2018年第24期89-90,64,共3页Electronic Test

摘　　要：本文结合一起穗东换流站500kV#1站用变及增穗甲线差动保护跳闸案例,结合保护动作情况进行了分析,最终检查发现故障点位于中开关间隔内电流互感器内部。Combining with a case of differential protection tripping of500kV#1substation transformer and Zengsui A line in Suidong converter station,this paper analyzes the protection action and finds that the fault point is located inside the current transformer in the middle switch interval.

关 键 词：换流站 差变保护 故障分析 处理 

分 类 号：TM73[电气工程—电力系统及自动化]