摘要
对换流变压器非电量保护“三取二”逻辑进行了功能分类和分析。历年的换流站闭锁事件说明了非电量“三取二”保护逻辑的必要性。论述了各类型“三取二”保护逻辑的优缺点,为今后新建直流输电工程的非电量保护选型提供参考。
Functional classification and analysis on the“Pick Two Among Three”logic scheme of the non-electrical protection for converter transformers were done.Necessity of the“Pick Two Among Three”protective logic scheme was proved through the historical shut-off accidents of the converter transformer stations.Advantages and shortcomings of various kinds of“Pick Two Among Three”logic scheme were described,as the reference to select suitable type of the non-electrical protection schemes for the newly-built dc transmission project in future.
作者
毛志平
武剑利
常慧鹏
MAO Zhiping;WU Jianli;CHANG Huipeng(State Grid Hunan Electric Power Company Overhaul Company)
出处
《电机技术》
2018年第6期57-61,共5页
Electrical Machinery Technology
关键词
换流变压器
非电量保护
优化
converter transformer
non-electrical protection
optimization