Shunt Reactor With Auxiliary Winding System Inter-turn Protection Based on Zero Sequence Differential Current

被引：0
|
作者：
Guo Y. [1 ]
Wang X. [1 ]
Liu H. [2 ]
机构：
[1] State Key Laboratory of Power Grid Safety and Energy Conservation (China Electric Power Research Institute), Haidian District, Beijing
[2] Central China Branch of State Grid Corporation of China, Wuhan, 430077, Hubei Province
来源：
Guo, Yarong (guoyarong@epri.sgcc.com.cn) | 1600年 / Power System Technology Press卷 / 44期
关键词：
Inter-turn fault; Inter-turn protection; Shunt reactor with auxiliary winding system; Zero sequence current differential protection;
D O I：
10.13335/j.1000-3673.pst.2018.2495
中图分类号：
学科分类号：
摘要：
Shunt reactor with auxiliary winding system can compensate line capacitive reactive power and provide power for switching station. There are large amount of air gaps in the iron core of the reactor, leading to weak coupling relationship between shunt reactor winding and auxiliary winding. According to the special structure of shunt reactor with auxiliary winding system, the equivalent circuit of shunt reactor with auxiliary winding system is researched in this paper. Based on the fixed relationship between the zero sequence currents of shunt reactor winding and auxiliary winding when fault occurs outside the zone, an inter-turn protection principle of shunt reactor with auxiliary winding system based on zero sequence differential current is proposed. Dynamic simulation of prototype protection device shows that this protection principle is a current protection without voltage information and voltage transformer, and its protection setting eliminate manual calculation work. It is sensitive to slight inter-turn fault. © 2020, Power System Technology Press. All right reserved.
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页码：1576 / 1581
页数：5
相关论文
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