| 葛南直流线路高阻接地故障保护分析 |
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| 引用本文： | 田庆,原敏宏,王志平.葛南直流线路高阻接地故障保护分析[J].电力系统及其自动化学报,2008,20(6). |
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| 作者姓名： | 田庆 原敏宏 王志平 |
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| 作者单位： | 国网运行有限公司晋东南特高压管理处,长治,047100 |
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| 摘 要： | 分析了葛洲坝一南桥高阻接地故障所引发的保护动作行为,以加深对极线路保护的理解.通过读取故障的原始录波数据,详细分析了这次故障的特征,给出了行波保护、电压突变量保护、线路低电压保护和线路差动保护的动作行为,使这次故障过程得到比较清楚的解释.同时根据直流线路高阻接地原理图,计算出高阻接地的故障点和过渡电阻值,指出高阻接地故障时主保护灵敏度不足的问题.
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| 关 键 词： | 高阻接地 极线路保护 高压直流 |
Analysis of Ge-Nan HVDC Line Protection Against High-impedance Ground Fault |
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| TIAN Qing,YUAN Min-hong,WANG Zhi-ping.Analysis of Ge-Nan HVDC Line Protection Against High-impedance Ground Fault[J].Proceedings of the CSU-EPSA,2008,20(6). |
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| Authors: | TIAN Qing YUAN Min-hong WANG Zhi-ping |
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| Affiliation: | TIAN Qing,YUAN Min-hong,WANG Zhi-ping(Southeast Shanxi Ultra High Voltage Administrative Bureau,State Grid OperationCompany Limited,Changzhi 047100,China) |
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| Abstract: | This paper analyses the protection characteristic of Ge-Nan HVDC line protection against high-impedance ground fault in order to understand the principle of HVDC pole line protection better.The characteristic of high-impedance ground fault is studied with the original record data.The behaviors of traveling wave protection,du/dt protection,line low-voltage protection and line differential current protection are proposed which can illustrate the fault process clearly.The location of high-impedance ground faul... |
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| Keywords: | high-impedance ground fault pole line protection high voltage direct current(HVDC) |
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