基于MATLAB的变压器空载合闸瞬变过程仿真研究

MATLAB-based simulation of instantaneous change process when transformer no-load switching

变压器空载合闸投入运行时会出现一个较为复杂的电磁瞬变过程 ,对其进行工程计算很麻烦。利用MATLAB中的电气系统模块库 (PSB) ,为研究分析变压器空载合闸瞬变过程建立了系统仿真模型 ,它可以分析变压器在空载合闸瞬变过程中励磁涌流、磁通以及谐波的变化情况。本文采用这一模型进行了仿真 ,给出了仿真结果 。

A complicated electromagnetic instantaneous change process will appear when transformer no load switching, which is complicated to calculate electromagnetic quantities. Using power system blockset(PSB)of MATLAB,a simulation model of analysing instantaneous change process is built when transformer no load switching. It can analyse the varieties of inrush current,flux and harmonic in the instantaneous change progress.Using this model, a simulation is accomplished,and the result is given. This method is a facile and effective means for analysing and calculating electromagnetic quantities during instantaneous change process when transformer no load switching.