摘要
基于电磁暂态仿真软件PSCAD/EMTDC搭建雷击输电线路模型,对输电线路发生绕击故障和雷击导线未造成故障时产生的绕击雷电过电压暂态特征进行仿真分析,发现了雷击导线时绝缘子两端、杆塔塔顶、三相导线以及避雷线上的过电压波形特征,以及绕击雷电过电压在输电线路中的传播规律。
In this paper,the electromagnetic transient simulation software package PSCAD/EMTDC is used to establish the lightning strike model of the transmission line.Based on this model,the transient characteristics of lightning overvoltage that generated by the transmission line shielding failure and the lightning does not cause the fault are simulated and analyzed.The analysis revealed the characteristics of the overvoltage waveform at both ends of the insulator when lightning struck the conductors,as well as the overvoltage characteristics of the top of the tower and the three-phase conductors and the lightning protection line,and the transmission law of shielding failure Lightning Overvoltage around the transmission line.
作者
赵紫辉
ZHAO Zi-hui(Zhuhai Power Supply Bureau of Guangdong Power Grid Corporation,Zhuhai 519000,China)
出处
《通信电源技术》
2020年第15期9-13,共5页
Telecom Power Technology
关键词
雷电过电压
绕击
暂态特征
仿真
lightning overvoltage
shielding failure
transient feature
simulation
