A fast faulty phase selection method based on S-transform

被引：0
作者：
Liu, Dong [1 ]
Zou, Guibin [1 ]
Wang, Xin [2 ]
Gao, Houlei [1 ]
Ma, Yueyang [1 ]
机构：
[1] Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education, Shandong University, Jinan, 250061, Shandong Province
[2] State Grid Shandong Electric Power Research Institute, Jinan, 250002, Shandong Province
来源：
Dianwang Jishu/Power System Technology | 2015年 / 39卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Fault component; Faulty phase selection; Model phasor; S-transform; Waveform integration;
D O I：
10.13335/j.1000-3673.pst.2015.12.040
中图分类号：
学科分类号：
摘要：
Traditional phase selection method can't keep up with development of extra high speed transient protection. This paper proposes a novel approach for faulty phase selection based on S-transform and phase current integration. This approach stems from analyzing modular characteristics of various types of faults and characteristics of phase currents for two phase grounding fault. Phase selection algorithm uses S-transform to obtain single frequency phasor of module components at a specific time, and relations among module phasorsare analyzed to classify fault types. The algorithm uses phase current integration to distinguish faulty phases in two phase grounding circumstance. PSCAD simulation results show that the algorithm can quickly and accurately find out fault phases, not affected by fault position, fault inception angle, fault resistance and structure of buses. © 2015, Power System Technology Press. All right reserved.
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页码：3603 / 3608
页数：5
相关论文
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