谐振过电压烧损开关柜的原因及防治措施  

Causes and Preventive Measures of Resonant Overvoltage Burning Switch Cabinet

作　　者：阴登辉 王娜[1] 王绍勇 YIN Denghui;WANG Na;WANG Shaoyong(Shenyang University of Chemical Technology ,Shenyang,Liaoning 110142, China;Beijing Urban Construction Design and Development Group Co.,Ltd.,Beijing 100085,China)

机构地区：[1]沈阳化工大学,辽宁沈阳110142 [2]北京城建设计发展集团股份有限公司,北京100085

出　　处：《东北电力技术》2020年第5期50-52,共3页Northeast Electric Power Technology

摘　　要：为了明确10 kV开关柜经常烧毁的主要原因,并提出预防措施,对2014—2018年,辽宁电力10 kV线路开关柜损坏情况进行了梳理、统计和分析。结果表明:TV铁磁谐振过电压是损毁开关柜的最主要原因;单相永久性接地和单相间歇性弧光接地是引起铁磁谐振的主要原因;采用4TV接线方式的消谐效果最好,经济性能最优。In order to clarify the main causes for frequent burning of 10 kV switchgear and to put forward preventive measures,the damage of 10 kV line switchgear of Liaoning electric power is combed,counted and analyzed from 2014 to 2018.The results show that TV ferromagnetic resonance overvoltage is the main reason of damage to switchgear.Single-phase permanent grounding and single-phase intermittent arc grounding are the main causes of ferromagnetic resonance.4TV connection mode has the best harmonic elimination effect and best economic performance.

关 键 词：铁磁谐振过电压 单相永久性接地 单相间歇性弧光接地 4TV接线方式 

分 类 号：TM63[电气工程—电力系统及自动化]