Abstract：A fault condition of a 220kV transmission line Capacitor Voltage Transformer (CVT) is introduced. Through disassembly check, experimental study and simulation based on ATP-EMTP software of the faulty CVT, the main fault cause that sudden load change in the secondary side after the disconnection of the damping resistor leads to resonance overvoltage is found. In the end, some suggestions are given to avoid similar failures such as taking and analyzing oil from the electromagnetic unit, adding harmonic analysis functionality in the On-line Monitoring system and so on.
郭晓君, 吴文斌, 许军, 黄海鲲. 一起基于ATP-EMTP仿真的电容式电压互感器故障的分析研究[J]. 电气技术, 2016, 17(4): 87-91.
Guo Xiaojun, Wu Wenbin, Xu Jun, Huang Haikun. Analysis and Research of a Capacitor Voltage Transformer Failure based on ATP-EMTP Simulation. Electrical Engineering, 2016, 17(4): 87-91.
2016, Vol. 17 
