Energy-directional pilot protection based on leading-phase for active distribution network

被引：0

作者：

Xu M. ^{[1
]}

Zou G. ^{[1
]}

Chen N. ^{[2
]}

Zhang J. ^{[2
]}

Ma Y. ^{[1
]}

机构：

[1] School of Electrical Engineering, Shandong University, Ji'nan

[2] State Gird Shandong Electric Power Company Zaozhuang Electric Power Company, Zaozhuang

来源：

Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2017年 / 37卷 / 01期

关键词：

Active distribution network; Directional pilot protection; Distributed generator; Electric power system protection; Energy function; Fault component; Leading phase;

D O I：

10.16081/j.issn.1006-6047.2017.01.010

中图分类号：

学科分类号：

摘要：

Based on the characteristic analysis of fault-phase energy function for different fault types, a method of energy-directional pilot protection is proposed. According to the characteristics of distribution network with ineffectively-grounded neutral point, a fault recognition criterion based on the leading-phase is established and an auxiliary criterion based on the amplitude of energy function is added to get over the impact of in-zone branch load switching on the fault recognition. Its adaptability to the distributed generators which are connecting with the distribution network via inverter based on the positive-sequence component control is studied. Simulative results show the proposed method is immune to the transition resistance to a certain extent and able to recognize the fault directions correctly and get over the impact of load switching. © 2017, Electric Power Automation Equipment Press. All right reserved.

引用

页码：58 / 64

页数：6

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