超高压变电站雷电过电压仿真及分析  

Simulation and Analysis of Lighting Overvoltage in EHV Substation

作　　者：邵昱[1] 余嘉文[1] 

机构地区：[1]武汉大学电气工程学院,湖北武汉430072

出　　处：《陕西电力》2011年第8期1-4,17,共5页Shanxi Electric Power

基　　金：科技部青年创新基金重点资助(2010BC17A03);中央高校基本科研业务费专项资金资助(WHU20110009)

摘　　要：超高压电网的雷害事故时有发生,有效预防雷害事故可以提高变电站的安全性。本文采用EMTP软件建立500 kV变电站一次设备模型、输电线路模型和雷电流模型,模拟雷电波通过输电线路进入变电站的过电压情况,分析不同防雷措施情况下变电站的过电压情况。仿真计算结果对实际运行中的电力系统雷害事故分析具有一定的借鉴意义,对雷害事故的防治以及对过电压现象的分析具有一定参考价值。Lighting attack always occurs in EHV system and effective measures can improve the safety of substations. The article uses EMTP program to put models of 500 kV substation, transmission line and lighting current, simulating overvoltage degrees when lighting current goes into substation through transmission line. The article also analyzes different overvoltage degrees under various anti-lightning protection measures. The result of the simulation is a reference to the analysis of lighting attack in the power system, which has great value to the analysis of overvoltage and the restriction of lighting attack.

关 键 词：超高压变电站 EMTP 仿真计算 过电压 接地电阻 避雷器 

分 类 号：TM723[电气工程—电力系统及自动化]