Analysis and Modification of a 500kV Transmission Line Overvoltage Problem
The power frequency resonance overvoltage problem of a 500kV transmission line under non-full phase operation after installation of high voltage shunt reactor is analyzed. It is pointed out that the overvoltage problem is the result of the simultaneous action of higher compensation degree of high voltage shunt reactor,untransposition of the transmission line and improper neutral reactor value of high voltage shunt reactor. Technical measure that the transmission line should be transposed and the neutral reactor value should be rechosen is proposed. An equivalent model of tower is used to ensure the accuracy of simulation. Test results after the accomplishment of the modification project show that the proposed technical measure is effective.
transmission line power frequency resonance overvoltage high voltage shunt reactor
LIU Wei NING Wen-hui HUANG Dong-shan
Guangxi Power Grid Electric Power Research Institute,Nanning 530023,China
国际会议
南京
英文
1463-1468
2010-09-13（万方平台首次上网日期，不代表论文的发表时间）