多机电力系统的频谱拟合  

SPECTRUM APPROXIMATIONS OF MULTIMACHINE POWER SYSTEMS

作　　者：毛承雄[1] 樊俊[1] 陆继明[1] 

机构地区：[1]华中理工大学

出　　处：《电力系统及其自动化学报》1993年第1期31-37,共7页Proceedings of the CSU-EPSA

摘　　要：本文采用最小二乘估计方法对多机电力系统的频谱进行拟合。根据不同阶次模型的拟合误差的大小即可确定对某台发电机采用几阶模型最为合适。这对多机电力系统中同步发电机的励磁控制器设计具有一定的指导意义。对一个实际电力系统的计算表明:多机电力系统中一般的同步发电机采用3阶模型是合适的;对于转动惯量相当大的机组可采用2阶模型。Least-square technique is used to approximate the spectrum of multimachine power system in this paper. The best synchronous generator model order can be determined according to the approximation errors. The research results are very useful to design a synchronous generator excitation controller in a multimachine power system. One multimachine power system example results show that in most cases the 3rd order of model is accepted to represent a synchronous generator, but in some cases, 2nd order of model is also accepted to describe a synchronous generator with large inertia.

关 键 词：励磁控制 最小二乘法 电力系统 

分 类 号：TM76-55[电气工程—电力系统及自动化]