全绝缘技术在水电厂“双机一变”接线方式下消除电压互感器谐振的研究与应用  

Research and Application of Full Insulation Technology to Eliminate Voltage Transformer Resonance under Two-Generator and One-Transformer Connection Mode of Hydropower Plant

作　　者：周明露 熊雷斌 姜丽刚 乔清泉 ZHOU Minlu;XIONG Leibin;JIANG Ligang;QIAO Qingquan(TianshengqiaoⅡHydropower Generation Co.,Ltd.,Xingyi 562400,China)

机构地区：[1]天生桥二级水力发电有限公司

出　　处：《电工技术》2019年第24期45-47,共3页Electric Engineering

摘　　要：天生桥二级电站近年来已多次发生18kV电压互感器(PT)谐振导致发电机组跳闸非计划停运事故事件。文章通过对天二电站电压互感器回路进行建模仿真分析,确定了18kV PT谐振的原因,并提出相应的解决方案。In recent years,18 kV voltage transformer(PT)resonance has caused multiple unplanned shutdown accidents of generator sets in Tianshengqiao Ⅱ power station.Through the modeling and simulation analysis of the voltage transformer loop of Tianshengqiao Ⅱ power station,the reason of 18 kV PT resonance is determined,and the cooresponding solution is proposed.

关 键 词：全绝缘 半绝缘 电压互感器 励磁特性 谐振 

分 类 号：TM451[电气工程—电器] TV734[水利工程—水利水电工程]