Protection scheme based on phase comparison of positive-sequence fault current for active distribution network

被引：0
|
作者：
Peng C. [1 ]
Zhang Y. [1 ]
机构：
[1] School of Electrical and Electronic Engineering, East China Jiaotong University, Nanchang
来源：
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2016年 / 36卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Active distribution networks; Fault direction; Phase comparison; Positive sequence; Relay protection;
D O I：
10.16081/j.issn.1006-6047.2016.06.024
中图分类号：
学科分类号：
摘要：
Since the increased penetration of distributed generation and the operational complexity of active distribution network may cause the improper operation and reclosing failure of protections, a protection scheme is proposed for it, which constructs the fault direction criterion based on the comparison between the positive-sequence fault current and the reference phasor to quickly and accurately locate the fault zone and then realize the selectively cooperative actions of the upstream and downstream protections. Due to the system error, the generalized angle is adopted in the actual application to enhance the robustness of direction criterion. Since this scheme needs only the post-fault current information, less voltage transformers are installed. As the cooperation between protections needs only the transmission of blocking signal and trip signal, the demand of communication is reduced. The efficiency of the proposed scheme is verified by the simulations in different fault conditions. © 2016, Electric Power Automation Equipment Press. All right reserved.
引用
收藏
页码：163 / 169
页数：6
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