220kV母线PT断线问题分析及二次回路改造  

Analysis of 220kV Bus PT Disconnection Problems and Improvement of Secondary Circuit

作　　者：郭昂霄 GUO Angxiao(Jilin Thermal Power Plant,State Grid Northeast Power Co.,Ltd.,Jilin 132000,China)

机构地区：[1]国电东北电力有限公司吉林热电厂,吉林吉林132000

出　　处：《电工技术》2020年第18期108-109,111,共3页Electric Engineering

摘　　要：220kV母线PT二次电压回路并联设备繁多,给故障后查找原因增加了难度,而220kV母线PT断线后影响范围大,应快速及准确处理。文章通过实例,介绍了PT断线后的故障查找方法,并提出改造建议。There are many parallel devices for 220kV busbar PT secondary voltage loop,which increases the difficulty of finding the cause after the fault.The 220kV busbar PT has a large impact area after disconnection,and it should be handled quickly and accurately.The fault finding method after PT disconnection was introduced through examples,and suggestions for improvement were put forward.

关 键 词：220kV母线PT PT断线 绝缘 

分 类 号：TM645[电气工程—电力系统及自动化]