基于场路耦合法的变压器和应涌流分析  

Analysis of Transformer Sympathetic Inrush Based on Field-circuit Coupling Method

作　　者：詹厚剑 史美娟[2] 何井龙 

机构地区：[1]广西电网电力调度控制中心,南宁530023 [2]柳州职业技术学院,广西柳州545000

出　　处：《广西电力》2016年第2期46-49,共4页Guangxi Electric Power

摘　　要：针对并联连接变压器的和应涌流现象,基于铁心磁滞曲线(B-H曲线),运用非线性瞬变磁场电路的二维轴对称模拟法,研究系统等效电阻、空载合闸角和变压器剩磁等因素对和应涌流最大值和持续时间的影响。通过仿真分析得到,系统等效阻抗增加会使和应涌流的幅值稍微增加,但其对涌流的持续时间影响较小;合闸角度、剩磁的大小改变会引起和应涌流的显著变化。Aiming at sympathetic inrush phenomenon in the parallel connection transformer, influence of factors including system equivalent impedance, no-load switching-on angle and transformer residual magnetism and so on to the max value and duration time of sympathetic inrush is studied based on hysteresis curve of iron core （B-H curve） and by using two dimension axisymmetric simulation method of nonlinear transient field-circuit. It is obtained by simulation that the increasing of system equivalent impedance will lead to the slight increasing of sympathetic inrush magnitude but has less influence to duration time of sympathetic inrush, and the change of the switching-on angle and the residual magnetism size will lead to significant changing of sympathetic inrush.

关 键 词：变压器 和应涌流 场路耦合 

分 类 号：TM401[电气工程—电器]