摘要
分析了变压器励磁涌流的衰减机理,根据变压器等效电路,推导出衰减励磁涌流的递归计算方法。通过曲线拟合的方法,提出了涌流幅值和间断角随时间变化的实用计算公式,为变压器差动保护和后备保护的原理研究、整定计算提供了分析计算的工具。
The attenuation mechanism of transformer magnetizing inrush current is analyzed. A recurrent approach to calculate the attenuated inrush current is derived based on the transformer equivalent circuit. Formulas to calculate the dependence of dead angle and inrush current amplitude on time are presented by curve fitting. That provides a useful tool for the analysis and calculation of differential protection and backup protection.
出处
《电力系统自动化》
EI
CSCD
北大核心
2005年第12期57-60,共4页
Automation of Electric Power Systems
关键词
电力变压器
励磁涌流
继电保护
Attenuation
Curve fitting
Electric fault currents
Electric instrument transformers
Equivalent circuits
Relay protection
