随着电网规模的不断扩大,发电机组出口容量和电压等级的提高,对机组运行稳定性的要求也随之提高;而发电机励磁系统对电力系统的稳定控制具有重要作用。以江苏电网大型机组励磁系统为研究对象,简述了励磁系统现场实测建模的方法,利用PSASP软件的自定义建模功能对励磁系统进行自定义建模,并在此基础上通过模型参数辨识将自定义模型转化为PSASP及PSS/E两个软件下的标准模型,最后建立了励磁系统WEB数据库。

The modern power system is coming into an age of big scale, high voltage,and large capacity. And with the transformation mentioned above, the requirement of the generator′s stability has become more and more exigent.The excitation systems(include AVR and PSS)of generators play important parts in power system stability.Based on the research of the excitation system of large generators in Jiangsu power system, this paper introduces the method of excitation system measurement-based modeling,creates the models of excitation system by using the user-defined modeling function of PSASP,converts the user-defined models to the normative models of PSASP and PSS/E, and at last, establishes the WEB database of the excitation system.