A New Transformer Protection Scheme Based on the Recognition of Phase Space Trajectory and Multi-criteria Fusion

被引：0
|
作者：
Rong Z. [1 ]
Lin X. [1 ]
Jin N. [1 ]
Xing J. [1 ]
Zhang P. [1 ]
Li Z. [1 ]
Ma S. [1 ]
机构：
[1] State Key Laboratory of Advanced Electromagnetic Engineering and Technology (Huazhong University of Science and Technology), Wuhan, 430074, Hubei Province
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2020年 / 40卷 / 06期
基金：
中国国家自然科学基金;
关键词：
CT saturation; Fault component of instantaneous power (FCIP); Inrush current; Phase space trajectory; Transformer protection;
D O I：
10.13334/j.0258-8013.pcsee.182245
中图分类号：
学科分类号：
摘要：
This paper proposed a new transformer protection scheme based on phase space trajectory recognition and multi-criteria fusion. Firstly, the basic concept of phase space and the method of selecting phase space parameters were given. Then, the phase space trajectory formed by fault component of instantaneous power (FCIP) was analyzed under different conditions such as internal faults, external faults and switching on the unloaded transformer. Given such analyses, a new criterion for transformer protection based on phase space trajectory identification was proposed. Furthermore, two new protection criteria were designed and all criteria were skillfully integrated based on the change rule of voltage and current under exceptional circumstances such as CT saturation, switching on the unloaded transformer with high resistance faults and short-term transferring faults. Finally, a new transformer protection scheme was designed. The simulation results based on PSCAD/EMTDC verify the effectiveness and superiority of the new scheme. © 2020 Chin. Soc. for Elec. Eng.
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页码：1924 / 1937
页数：13
相关论文
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