Study on Overvoltage of No load Transformer Switched By 110kV GIS[J]. High voltageapparatus, 2000, (4): 15-18. DOI: 10.13296/j.1001-1609.hva.2000.04.004.
Study on Overvoltage of No load Transformer Switched By 110kV GIS
摘要
使用EMTP数字仿真程序
结合具体工程
计算分析了发电机出口真空断路器开断站内短路电流时的瞬态恢复电压
同时
优化选择了这一实际工程中限制真空断路器断口瞬态恢复电压所采用的R -C吸收器的参数
比较了抑制真空断路器瞬态恢复电压的几种方法。
Abstract
According to the practical circuit of four 110kV substations
a calculation of VFTO by EMTP is presented while 110kV GIS switches on and off no load transformer. Besides
VFTO’s amplitude and frequency are analyzed. A comparison between calculation and field measurement is also made.