三相短路电流计算的探讨

Discussion of Three-Phase Short-Circuit Current Calculation

三相短路电流计算是供电系统设计、运行中必需进行的计算分析工作。三相短路电流计算的常用方法有欧姆法和标幺制法。通过对两种方法的比较分析,可以看出标幺制法的优越之处,以及两种方法均存在的缺陷,并在此基础上提出改进方法。

Three - phase short - circuit current calculation is a necessary calculation analysis work during the power - supply system design and computational. The common methods of three - phase short - circuit current are Ohm and per unit system. By the comparison of two methods, we can see the strength of per unit system, the flaws of both methods, and put forward the improved methods on the above basis.