短路电流计算曲线法及其改进  

The Evaluation and Amendment on the Method of Power System Short-circuit Current Computational Curve

作　　者：曹炜[1] 张美霞[1] 

机构地区：[1]上海电力学院电气与自动化工程学院,上海200090

出　　处：《上海电力学院学报》2006年第4期327-329,337,共4页Journal of Shanghai University of Electric Power

基　　金：上海市教委发展基金一般项目(04LB05)

摘　　要：简要介绍了短路电流计算曲线的制作方法和使用原理,采用解析法在一定条件下对任意时刻短路电流周期分量进行计算,通过将此计算结果与典型短路电流计算曲线的对比分析,得出了汽轮发电机容量越大,典型短路电流有效性越差的结论.最后提出了计算曲线法的改进方法.The way to work out and use the power system short-circuit current curve is reviewed briefly at first. Then the symmetrical component of short-circuit current of any instant is calculated with function rules in the cases of three types of large-capacity turbine generators. The calculation result is compared with the standard short-circuit current curve, which leads to the conclusion that the larger the generator capacity, the less valid the typical short-circuit current is. Finally, the way to improve the traditional short-circuit current is proposed.

关 键 词：短路电流 计算曲线 解析算法 

分 类 号：TM713[电气工程—电力系统及自动化]