Studies of EHV transmission lines protection based on power balance

被引：0

作者：

Xin, ZT ^{[1
]}

Yin, XG ^{[1
]}

Zhang, Z ^{[1
]}

Yang, JC ^{[1
]}

Xia, YJ ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Wuhan, Peoples R China

来源：

UPEC 2004: 39th International Universitities Power Engineering Conference, Vols 1-3, Conference Proceedings | 2005年

关键词：

EMTP; line protection; power balance; sampled data;

D O I：

暂无

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

According to long line equation, this paper proposes a protection theory based on power balance. The theory deduced one terminal sampled data from another terminal sampled data. The in-zone faults or out-zone faults can be judged from the integrated powers, which are integrated with deduced sampled data and real sampled data during a time interval. The results simulated by EMTP shows that the theory has the following characteristics: operate quickly, relay can operate in 3/4 power frequency period; excellent performance under high resistance; not influencing by running mode.

引用

页码：742 / 746

页数：5

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