摘要
提出了一种励磁系统辨识参数的方法 ,即频域的 FFT/LSE法。应用信号处理技术 ,通过快速傅里叶变换 ( FFT)将时域信号转换至频域 ,再根据最小二乘 ( LSE)原理辨识出励磁系统的常用标准模型。给出了一套非标准励磁系统通过参数辨识转换为中国电力科学研究院仿真软件 PSASP下标准模型的实例 ,结果证明了频域 FFT/LSE法辨识结果正确 。
A method of the parameter identification for the excitation system of the generator is introduced, that is FFT/LSE method in frequency domain. The method of the fast Fourier transformation (FFT) is used to transform the signals in time domain into frequency domain, and then identifies the parameters for standard excitation system models which are conventionally used according to the least square theory. An example is given, in which a set of the non-standard excitation system is transformed into the standard model under the PSASP simulation software by the parameter identification method. The correctness of the result proves that the FFT/LSE method can be used for identifying the excitation system parameters of generators.
出处
《电力系统自动化》
EI
CSCD
北大核心
2001年第16期30-33,共4页
Automation of Electric Power Systems
关键词
系统辨识
参数估计
励磁系统
频域法
电力系统稳定性
Computer simulation
Electric excitation
Fast Fourier transforms
Frequency domain analysis
Least squares approximations
Mathematical models
Parameter estimation
