电力系统保护与控制Issue(10)：139-143,5.
串联补偿对差动保护的影响分析
Research on influence of series compensation on differential protection
李振动 1赵青春 2董杰 1宋巍 1赵哲源 1李亚明 1王天乙 1田霖1
作者信息
- 1. 国网冀北电力有限公司检修分公司，北京 102488
- 2. 南京南瑞继保电气有限公司，江苏 南京 211102
- 折叠
摘要
Abstract
This paper analyzes the primary causes and its possibility of the reversed current in serial compensation lines, according to the model of Jibei Wanshun 500 kV ultra-high voltage transmission line. Besides, the variation tendencies of differential protection ratio coefficient K of serial compensation lines on the condition of at different failure points, degrees of series compensation, grounding circumstances via high resistance and MOV breakdown are discussed by specific cases in this study. Practical variables under current operation mode are taken into simulation by RTDS. The performance characteristics of zero-sequence differential and phase difference protection affected by serial compensation are presented under single/double line operation modes. Since then, the performances of differential protection with variant transient resistance, failure points, systematic variables and load are obtained, furthermore, the improvements of Wanshun serial compensation protection devices are recommended at the end.关键词
串联补偿/电流反向/差动保护/过渡电阻/比例系数Key words
series compensation/current reverse/differential protection/transient resistance/ratio coefficient分类
信息技术与安全科学引用本文复制引用
李振动,赵青春,董杰,宋巍,赵哲源,李亚明,王天乙,田霖..串联补偿对差动保护的影响分析[J].电力系统保护与控制,2015,(10):139-143,5.
