摘要
基于Park矢量变换方法,通过求得的差动功率平均值判别电力变压器差动保护中激磁涌流与故障电流,解决了传统DFT方法分析中存在的局限性。仿真和试验结果表明,该方法有效、简单实用。
Based on the Park＇s vector transformation method, a new method for transformer differential protection is proposed by calculating the differential power average component to solve the identification problem of the magnetizing in- rush current and fault current in power transformer differential protection. The proposed method solves the limitations of traditional DFT analysis. The simulation and experimental results demonstrate that the method is simple, effective and practical.
出处
《水电能源科学》
北大核心
2013年第10期201-204,共4页
Water Resources and Power
关键词
电力变压器
差动保护
PARK矢量
故障电流
激磁涌流
power transformer
differential protection
Park＇s vector
fault current
inrush currents
