Analysis and countermeasures of current differential protection on transmission line with high series compensation degree

被引：0
|
作者：
Tang, Cui [1 ,2 ]
Yin, Xianggen [1 ,2 ]
Qi, Xuanwei [1 ,2 ]
Zhu, Xiaotong [3 ]
Wen, Minghao [1 ,2 ]
Zhang, Zhe [1 ,2 ]
机构：
[1] State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan
[2] Electric Power Security and High Efficiency Laboratory, Huazhong University of Science and Technology, Wuhan
[3] NR Electric Co. Ltd., Nanjing
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2015年 / 39卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Current differential protection; Fault characteristics; Line series compensation degree; Series capacitor compensation; Transmission line;
D O I：
10.7500/AEPS20140428016
中图分类号：
学科分类号：
摘要：
Series capacitor compensation technology is one of the key technologies in EHV and UHV long distance transmission. With wide application of the series compensation device and rapid development of the power grid, transmission lines with high series compensation degree may well appear which will affect the protection of transmission lines and even the main protection performance. The operation characteristics of the main protection are studied by referring to engineering practice, and the influence of the transition resistance, system operation mode and power angle on the current differential protection is analyzed. According to the simulation results, countermeasures for improving the sensitivity of differential current protection are presented. ©2015 State Grid Electric Power Research Institute Press
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页码：157 / 163
页数：6
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