一起中性点不接地系统线路送电时母线电压异常分析  

Analysis of Bus Voltage Abnomal Event During Transmission Line of Neutral Unground System

作　　者：刘炬 刘闯 李俊 陈磊 徐达 LIU Ju;LIU Chuang;LI Jun;CHEN Lei;XU Da(Sate Grid Jingmen Power Supply Company,Jingmen,Hubei 448001,China;School of Automation,China University of Geosciences(Wuhan),Wuhan,Hubei 430074,China)

机构地区：[1]国网荆门供电公司,湖北荆门448001 [2]中国地质大学(武汉)自动化学院,湖北武汉430074

出　　处：《东北电力技术》2025年第4期60-62,共3页Northeast Electric Power Technology

基　　金：中国博士后科学基金项目(2021M692992)。

摘　　要：针对某220 kV变电站中性点不接地系统中35 kV线路送电时母线电压异常问题,结合故障录波及设备情况分析,其原因为系统发生了铁磁谐振。从送电方式和设备选型方面提出防范措施,为处理同类型电压异常问题提供参考。According to the neutral unground system of a 220 kV substation,the bus voltage is abnormal when 35 kV line is transmitted.The fault record and equipment condition,the reason is that the system resonates ferroresonance.Preventive measures are proposed from the aspects of power transmission mode and equipment selection to provide reference for dealing with the same type of abnormal voltage.

关 键 词：中性点不接地系统 电压异常 铁磁谐振 电压互感器 

分 类 号：TM73[电气工程—电力系统及自动化]