刘守豹;张星海;曾宏;雷潇;廖文龙;

• 1:国网四川省电力公司电力科学研究院

摘要(Abstract)：

接地极线路是特高压直流输电系统的重要组成部分,为对特高压直流接地极内部过电压机理及特性进行分析,介绍了接地极线路电压响应传递函数,使用电力系统分析软件MATLAB Sim Power System建立了±800 k V宾金直流工程过电压计算模型,对紧急停运、接地极线路单侧接地、直流系统高压侧接地3种情况下接地极线路的内部过电压进行了比较,重点分析了高压侧接地点位置、直流滤波器、高压直流线路长度、接地极线路长度对单极故障下接地极线路内部过电压的影响。分析表明高压侧接地所导致的接地极线路内部过电压最严重;接地极线路长度、直流线路长度和高压侧故障点位置影响接地极线路内部过电压幅值和频率,直流滤波器则决定了过电压振荡频率;直流接地极线路绝缘水平应根据直流工程具体情况确定。

关键词(KeyWords)： 特高压直流;接地极线路;内部过电压;外绝缘配置;传递函数;紧急停运

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 刘守豹;张星海;曾宏;雷潇;廖文龙;

Email:

DOI: 10.13335/j.1000-3673.pst.2017.3044

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