大容量汽轮发电机短路电流值与典型计算曲线值的对比分析

首先简要回顾和校核了短路电流典型计算曲线的制作方法和原理,然后依此对3台大容量汽轮发电机进行了任意时刻短路电流周期分量的计算,并将计算结果与典型短路电流计算曲线进行了对比分析,得出了汽轮发电机容量越大,典型短路电流计算曲线的有效性越差的结论,最后对计算曲线法的改进应用提出了自己的看法.

Comparative analysis of short-circuit currents of large capacity turbo-generators and typical computational short-circuit current curves

The method and principle of drawing the typical computational short-circuit current curve are briefly reviewed and checked.The periodic component of the short-circuit current of three large capacity turbo-generators at random time were calculated,and the results were compared with the typical computational short-circuit current curve.It is concluded that the larger capacity the turbo-generator has,the less valid the curve is.Suggestions on the improvement of the computational curve are also proposed.