CAJ | 학술논문

本文介绍了220kV微机母差保护双重化配置的相关基本原则，并结合营口电网柳树220kV变电站220kV母差保护双重化改造工程，对母差保护双重化改造在设计、调试及应用过程中出现的关键技术做了较为详细的叙述，重点阐述了电流回路和失灵启动回路的改造问题。将改造过程中各个环节容易出现的问题及原因进行了分析，并对这些问题提出了一些见解和解决方案。希望这些经验总结可以为今后即将进行的母差保护双重化改造工作提供必要的参考。
본문개소료220kV미궤모차보호쌍중화배치적상관기본원칙，병결합영구전망류수220kV변전참220kV모차보호쌍중화개조공정，대모차보호쌍중화개조재설계、조시급응용과정중출현적관건기술주료교위상세적서술，중점천술료전류회로화실령계동회로적개조문제。장개조과정중각개배절용역출현적문제급원인진행료분석，병대저사문제제출료일사견해화해결방안。희망저사경험총결가이위금후즉장진행적모차보호쌍중화개조공작제공필요적삼고。
This paper presents some basic principles of duplex configuration about 220kV busbar differential protection. Based on the busbar differential protection reformation project in Liushu 220kV substation of Yingkou power grid,some key technologies of the duplicated busbar differential protection reformation project in the process of design,debugging and application are described,some problems about current circuit and breaker fail protection circuit are discussed. An-alyzes problems are liable to appear in each link,then,reasonable explanations and suggestions are given to solve these problems. It is expected that these conclusions and experiences can serve as reference for busbar differential protection reformation projects in the future.