摘要
随着能源基地装机规模不断增加,系统单相接地短路电流也不断攀升,为解决单相接地短路电流超标问题,本文分析快速开关原理,并对不同抑制短路电流接线方式进行分析,此外对中性点加装小抗前后单相接地短路电流对比。通过新疆某实际电网算例,验证本文短路电流抑制方法的有效性,并对中性点串小抗和快速开关电抗加装阻值提出优化意见。
As the installed capacity of the energy base continues to increase,the single phase grounding short circuit current of the system is also rising.In order to solve the problem of excessive single phase grounding short circuit current,this paper analyzes the principle of fast switching and analyzes different wiring methods for suppressing short circuit current.Comparison of single phase grounding short circuit current before and after the neutral point is installed with a small reactor.An actual power grid example in Xinjiang verifies the effectiveness of the short circuit current suppression method in this paper,and puts forward optimization opinions on the additional resistance of the neutral point series reactor and the fast switching reactor.
作者
樊国伟
樊国旗
霍超
孔繁宇
刘乃杰
何业飞
宋朋飞
魏朝阳
陈伟杰
FAN Guowei;FAN Guoqi;HUO Chao;KONG Fanyu;LIU Naijie;HE Yefei;SONG Pengfei;WEI Zhaoyang;CHEN Weijie
出处
《青海电力》
2021年第3期7-11,共5页
Qinghai Electric Power
关键词
短路电流
快速开关
小抗
short circuit current
fast switching
small reactance
