Protection scheme for active distribution system based on directions of current phase angle variation

被引：17

作者：

Si, Xinyue ^{[1
]}

Chen, Qing ^{[1
]}

Gao, Zhanjun ^{[1
]}

Ma, Jie ^{[2
]}

Chen, Minwei ^{[3
]}

Wang, Lei ^{[4
]}

机构：

[1] Key Laboratory of Power System Intelligent Dispatch and Control (Shandong University), Ministry of Education, Jinan

[2] Shandong Electric Power Dispatching and Control Center, Jinan

[3] Electric Power Research Institute of Fujian Electric Power Company Limited, Fuzhou

[4] State Grid of China Technology College, Jinan

来源：

Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2014年 / 11期

关键词：

Active distribution system; Current phase angle; Relay protection; Variation direction;

D O I：

10.7500/AEPS20130509007

中图分类号：

学科分类号：

摘要：

With the increasing interconnection of distributed generators (DGs), the radial structure of conventional distribution system will change to multi-terminal. Because of the randomness of the DG power output, the traditional protection scheme based on the current amplitude is difficult to set. The difference in phase angle between the currents before and after fault conditions is investigated, and the relationship between the direction of current phase angle variation and fault location has been found to present a new current directional pilot protection scheme. This scheme uses only current information to avoid the installation of voltage transformers. For a huge distribution network, this scheme leads to a very high economy coefficient. As it only needs transmitting the determination result signals, the demand for the communication channel is reduced. Finally, verification of the protection scheme is carried out by simulation analysis. ©2014 State Grid Electric Power Research Institute Press

引用

页码：97 / 103

页数：6

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