Fault section location method for single-phase grounding fault in distribution network based on ESMD

被引：0
作者：
Yin Z. [1 ]
Sun G. [1 ]
Ding J. [2 ]
Lü F. [2 ]
Yuan H. [2 ]
Wei Z. [1 ]
机构：
[1] Research Center for Renewable Energy Generation Engineering, Ministry of Education, Hohai University, Nanjing
[2] State Grid Wuxi Power Supply Company, Wuxi
来源：
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2019年 / 39卷 / 06期
关键词：
Distribution network; ESMD; Fault section location; Single-phase grounding fault;
D O I：
10.16081/j.issn.1006-6047.2019.06.025
中图分类号：
学科分类号：
摘要：
Single-phase grounding fault in distribution network generates abundant electrical transient quantities in the system. Based on the characteristic that the magnitude of transient zero-sequence current at upstream of the fault point is much larger than that at the downstream of the fault point and normal line, the fault section location method based on ESMD(Extreme-point Symmetric Mode Decomposition) is proposed for distribution network. Based on line parameters of actual distribution network, a typical cable-line hybrid simulation model is established, with which, the transient zero-sequence current is decomposed by ESMD and the transient energy function is constructed. The tran-sient energy function is used as an index to evaluate the magnitude of the transient zero-sequence current of each measurement point for fault section location. The simulative results show that the proposed method can extract fault features effectively, and has strong adaptability to various fault conditions, and each measurement point only needs to upload one transient energy value, which can effectively reduce communication requirements and save hardware investment costs. © 2019, Electric Power Automation Equipment Press. All right reserved.
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页码：173 / 178and191
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