摘要
文中以某电厂发生的PT铁磁谐振为例,分析了谐振原因,对其可能存在铁磁谐振的工况进行了仿真计算,并提出了可行的消谐措施。研究表明:对于中性点不接地系统,PT应选用额定电压因数为"1.9倍、8 h";消弧线圈补偿度宜在-(5%~20%)之间。
This paper takes the PT ferroresonance in a power plant as an example,analyses the reasons of resonance,simulates the possible working conditions of ferroresonance,and put forwards the feasible measures for harmonic elimination.The research shows that for neutral ungrounded system,PT should choose rated voltage factor of 1.9 timesand 8 hours,and the compensation degree of arc suppression coil should be between-(5%~20%).
作者
陈琳
刘娟
李爽
CHEN Lin;LIU Juan;LI Shuang(State Grid of Shaanxi Electrical Power Ltd.,Co.,Shaanxi Baoji 721004,China;State Grid of Liaoning Electrical Power Research Institute,Shenyang 110006,China)
出处
《高压电器》
CAS
CSCD
北大核心
2019年第6期242-246,共5页
High Voltage Apparatus
关键词
GIS
电磁式电压互感器(PT)
铁磁谐振
分频
消谐措施
gas insulation substation
electromagnetic potential transformer
ferroresonance
dividing frequency
measures of harmonic elimination
