一起发电厂厂用电单相接地故障分析  

Analysis of an Auxiliary Power Single-phase Grounding Fault in a Power Plant

作　　者：魏栋 杨奇 WEI Dong;YANG Qi(Shanxi Luguang Electric Power Co.,Ltd.,Changzhi 046699,China)

机构地区：[1]山西潞光发电有限公司,山西长治046699

出　　处：《电工技术》2023年第15期244-245,249,共3页Electric Engineering

摘　　要：通过一起发电厂低压厂用变压器高压侧电缆头放电击穿故障查找的案例,对发电厂低压厂用变压器高压侧的单相接地短路的故障电压电流做了简要分析,为相关故障的快速查找提供了方法。Through a case of fault finding for the discharge breakdown of the cable head on the high-voltage side of the low-voltage auxiliary transformer in a power plant,the fault voltage current flow of single-phase ground short circuit on the high-voltage side of the low-voltage transformer in the power plant is briefly analyzed,which provides a method for the rapid finding of related faults.

关 键 词：零序保护 单相接地 相量图 故障定位 

分 类 号：TM645.1[电气工程—电力系统及自动化]