摘要
本文介绍了一种电力系统任意时刻短路电流计算的数学模型,用这个模型编制了一套程序进行实例计算,计算结果的精度是令人满意的。由于模型简单,不但使短路计算不失实用计算的特色,而且模型也能被一般的微型计算机所接受。因为模型中计及了同步发电机d-q参数的差异,使它可用于水轮发电机和汽轮发电机,也可计及强励的投入和切除,以及各种负荷特性的影响;此外,它还易与其他网络模型及潮流计算程序连接。
In this paper a kind of mathematical models is introduced to calculate tocurrent of short circuit in power system at any moment. By using the model aprogram has been worked out to calculat illustration.The accuracy of calculationresult is satifactory. Since the model is simple, the calculation of short circuitcan not only keep characteristics of proctical calculation, but also be used inthe general personal conputer. Because the diffefence of d--q axis parameter ofthe synchronous machine has been considered in this model, it can be used in thehydraulic or steam turbo--generator, and can also consider turn' on of turn' offof the forced excitation set and affect of property of various loads. It is, mor-eover,easy to connect the model with network model and program or load flow.
关键词
计及电势变化
短路电流
计算
considering change of potential
computing current of short circuit
