电器与能效管理技术Issue(3)：60-65,77,7.DOI:10.16628/j.cnki.2095-8188.2017.03.010
基于相角差值的含微电网的配电网方向性保护方案
Directional Relaying Scheme in Distribution Networks with Micro-Grid Based on Phase-Angle Difference
杨文荣 1马晓燕 1闫君媛 1祝俊瑶1
作者信息
- 1. 河北工业大学 电磁场与电器可靠性省部共建重点实验室, 河北 天津 300130
- 折叠
摘要
Abstract
The micro-grid connected to the distribution network enabled the distribution network's structure,operation and analysis method to change over and produces bidirectional power flow,resulting in reducing the sensitivity of the protection,protection mal-operation,islanding effect and reclosing unsuccessful problems and finally invalidating the traditional protection scheme:This paper proposed a new protection scheme for distribution network.The bus voltage and current phase-angle difference are used to judge the fault in positive and negative direction and the fault discriminant flow chart can quickly determine the fault location.This scheme is not affected by the direction of power flow and its reliability is high,and the protection range is large.Finally,the different fault types are simulated,and the feasibility of the method is verified by simulation.关键词
微电网/配电网/相角差值/方向性继电保护/故障方向Key words
micro-grid/distribution network/phase-angle difference/directional relaying/fault direction分类
信息技术与安全科学引用本文复制引用
杨文荣,马晓燕,闫君媛,祝俊瑶..基于相角差值的含微电网的配电网方向性保护方案[J].电器与能效管理技术,2017,(3):60-65,77,7.
