A Line Selection Method Based on Transient Phase Current Variation Comparison
Authors: 
Zeyu Qin, Liuqing Ye, Zhe Wang, Yue Qin, Jiyuan Huang, Xiong Xie, Xiangwei HuAuthors Info & Claims
Article No.: 26, Pages 1 - 5
Abstract
A new line selection method based on waveform comparison of sudden Phase Current Variation (PCV) is proposed to solve the problem of discriminant margin lack and prone to misjudgment in traditional faulty line selection method. By analyzing the characteristics of the faulty phase current, it shows that each phase current waveform of faulty line is different, and the Current Variation (CV) amplitude of the faulty phase is much larger than the normal phase, while the amplitude and waveform of each non-faulty line PCV are almost the same. This method defines the relative difference parameter to represent the waveform variation of each phase current. By calculating and comparing the value of the relative difference parameters, the maximum is selected as the faulty parameter of the faulty line. The simulation result shows that the method is not affected by line structure, fault type, operation mode and other factors, and it has significant advantages of applicability, economy and reliability when selecting the faulty lines.
References
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Published In
October 2021
477 pages
ISBN:9781450386494
DOI:10.1145/3513142
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Published: 13 April 2022
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- Research Project of State Grid Hunan Electric Power Company Limited
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ICITEE2021
ICITEE2021: The 4th International Conference on Information Technologies and Electrical Engineering
October 29 - 31, 2021
Changde, Hunan, China
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