CAJ | 학술논문

针对电炉变压器特殊结构难以实现常规差动保护的问题,采用新型电子式互感器,实现了电炉变压器低压侧电流的采集;并通过分析计算,设计了电炉变压器差动保护配置方案。结果表明：电炉变压器三侧纵差与高压侧分差构成逻辑＂或＂门输出,是电炉变压器差动配置的最佳方案。
침대전로변압기특수결구난이실현상규차동보호적문제,채용신형전자식호감기,실현료전로변압기저압측전류적채집;병통과분석계산,설계료전로변압기차동보호배치방안。결과표명：전로변압기삼측종차여고압측분차구성라집＂혹＂문수출,시전로변압기차동배치적최가방안。
Aiming at the problem of common differential protection difficult to realize for electric fur nace transformer,adopting new type of electronical mutual inductor,realizes electric current collec tion in low voltage side of electric furnace transformer;by analyzing and calculating,designs the differ ential protection allocation scheme of electric furnace transformer.The result shows that the three side longitudinal differential protection and high voltage branch side differential protection forming‘OR’ logic differential protection is the best differential protection allocation scheme for electric furnace transformer.