杨尚瑾;戴朝波;李芳灵;王清涛;刘伟;

• 1:南瑞集团公司(国网电力科学研究院有限公司)
• 2:中电普瑞科技有限公司
• 3:先进输电技术国家重点实验室(全球能源互联网研究院有限公司)

摘要(Abstract)：

故障电流限制器(fault current limiter,FCL)的动作速度与短路故障的识别速度密切相关。电力系统发生单相故障时,非故障相FCL不宜动作,因此,FCL动作定值需大于单相故障时非故障相的电流变化,导致定值提高,识别速度降低。针对这一问题,该文提出相电流差判据,可在故障发生后迅速判断是否为其他相的单相接地故障,降低本相FCL动作定值。该文对相电流差特性进行理论分析,并利用其降低电流瞬时值判据的整定值,形成新的短路故障快速识别方法。通过仿真计算和现场短路电流分析,证明所提方法具有识别速度快、计算量少、可靠性高等特点。

关键词(KeyWords)： 相电流差;短路故障;快速识别;故障电流限制器

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 杨尚瑾;戴朝波;李芳灵;王清涛;刘伟;

Email:

DOI: 10.13335/j.1000-3673.pst.2019.0161

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