电测与仪表2017，Vol.54Issue(18)：8-14,7.
基于低电压的反时限微网保护方案
Inverse-time protection scheme for micro-grids based on low-voltage
朱苑祺 1杨明玉 1郑灿 1刘行1
作者信息
- 1. 华北电力大学电气与电子学院,河北保定071003
- 折叠
摘要
Abstract
In order to deal with the micro-grid, which consists of inverter distributed generations ( DG) , on the basis of the low-voltage protection, using part of ideological thoughts of distance protection scheme, this paper proposed a low-voltage inverse-time protection scheme for micro-grids.Compared with the traditional protection, the protection principle, operating characteristics, coordination between primary protection and backup protection were investigated under different short circuit fault conditions, and analyzed the micro-gird which consisted of rotary DGs, and the tran-sition resistance and the influences of other special problems on the low-voltage inverse-time protection scheme were also investigated, and proposed improved recommendations.In MATLAB/Simulink environment, a micro-grid model which contained different control methods of distributed generation was built, and verified the protection scheme.The low-voltage inverse-time protection has good performance under different operating conditions and high resistance to fault resistor, and is able to remove fault quickly.关键词
分布式电源/微网/低电压保护/反时限/保护配合Key words
distributed generations/micro-grids/low voltage protection/inverse-time/protection coordination分类
信息技术与安全科学引用本文复制引用
朱苑祺,杨明玉,郑灿,刘行..基于低电压的反时限微网保护方案[J].电测与仪表,2017,54(18):8-14,7.
