Performance of current differential protection for transmission lines in HVDC/AC interconnected system

被引：0
|
作者：
Zhang, Pu [1 ]
Wang, Gang [1 ]
Li, Hai-Feng [1 ]
Zhu, Ge-Lan [1 ]
机构：
[1] South China University of Technology, Guangzhou 510640, China
来源：
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2010年 / 38卷 / 10期
关键词：
Relay protection - Electric power system protection - HVDC power transmission;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Based on the characteristics of equivalent DC-system power-frequency current variants under different fault conditions of AC system, the influence of HVDC system on the performance of two differential current relays using fault current and fault component current for transmission lines is analyzed respectively in the paper. It shows that the infeed of HVDC system can make the sensitivity of current differential relay lower under certain conditions, and the impact on fault component current differential relay is more serious. Extensive simulations using PSCAD/EMTDC testify the conclusion's correctness.
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页码：1 / 5
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