摘要
配电线路雷击跳闸事故主要由感应雷过电压引起,目前线路的雷电防护常采用装设线路型避雷器和保护间隙。为了评估线路防雷措施的雷电防护效果,采用H覬idalen的仿真计算模块,搭建10 k V配电线路感应雷过电压的仿真模型并仿真线路的感应雷过电压幅值及其沿线分布,确定感应雷过电压最严重时的工况条件,并仿真研究了装设避雷器及保护间隙对线路感应雷过电压防护作用以及安装密度不同时线路感应雷过电压的影响。
The lightning-induced overvoltage is the main cause of lightning trip accident in the distribution line. At present,the line arrester and the protective gap are commonly used in the lightning protection of the line. In order to evaluate the effect of line lightning protection measures,the HΦidalen’s simulation module is used in this paper to build a simulation model,which is used to simulate the amplitude of lightning-induced overvoltage and its distribution along the line and determine the condition of the most serious lightning-induced overvoltage. The protective effect of the arrester and the protective gap on the lightning-induced overvoltage of the line and the influence of the installation density on the lightning-induced overvoltage are studied in the simulation.
作者
李刚
刘大鹏
刘斌
王珏
李悠然
LI Gang;LIU Dapeng;LIU Bin;WANG Jue;LI Youran(State Grid Yantai Power Supply Company,Yantai 264000,China;College of Electrical and Electronic Engineering,Shandong University of Technology,Zibo 255000,China)
出处
《山东电力技术》
2018年第8期24-28,共5页
Shandong Electric Power
关键词
雷电防护
感应雷过电压
配电线路
避雷器
保护间隙
lightning protection
lightning-induced overvoltage
distribution line
arrester
protective gap
