High Impedance Fault Detection Method Based on the Synchronous Dynamic Full-scale Energy for the Distribution Network

被引：0
作者：
Liu Y. [1 ]
Zhao Y. [1 ]
Nair N. [2 ]
Yao W. [3 ]
机构：
[1] College of Electrical and Electronic Engineering, Shandong University of Technology, Zibo, 255049, Shandong Province
[2] Department of Electrical, Computer and Software Engineering, The University of Auckland, Auckland
[3] Electric Power Research Institute of State Grid Shanghai Municipal Electric Power Company, Shanghai
来源：
Dianwang Jishu/Power System Technology | 2020年 / 44卷 / 08期
基金：
国家重点研发计划;
关键词：
Distribution network; Fault detection; Principal component analysis; Synchronized measurement; Variational mode decomposition;
D O I：
10.13335/j.1000-3673.pst.2019.1999
中图分类号：
学科分类号：
摘要：
High impedance fault detection is critical in the distribution network because of the possibility of major financial damages and jeopardizing human safety. The use of the micro-phasor synchronous measurement unit in the distribution network provides favorable conditions for dynamic detection of high impedance fault in the distribution network. Aimed at the high impedance fault detection for the distribution network, a dynamic detection method based on synchronized full-scale energy was proposed to detect high impedance faults in the distribution network. Based on the proposed method, the high impedance fault detection consists of two stages. In the first stage, we employed the Kronecker production and the variation mode decomposition (VMD) to decompose the dynamic power currents into several intrinsic mode functions, and then computer the energy of each intrinsic mode functions by the Teager-Kaiser energy operator. In the second stage, we proposed an improved principal component analysis with the combined index for detecting mode energy matrices obtained at the first stage, and we applied a simple criterion for identifying the high impedance fault. Simulation results illustrate that the proposed method can accurately detect high impedance fault and is robust to transition impedances and noise. © 2020, Power System Technology Press. All right reserved.
引用
收藏
页码：3073 / 3080
页数：7
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