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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 ,可用来进行发电机组励磁系统参数的辨识
A method to identify the parameters of excitation system is proposed, namely the FFT / LSE method in frequency domain. The signal processing technique is used to convert the time domain signal to the frequency domain by Fast Fourier Transform (FFT), and then the common standard model of the excitation system is identified according to the principle of least squares (LSE). A set of nonstandard excitation system is converted to a standard model under the PSASP simulation software of China Electric Power Research Institute through parameter identification. The result shows that the recognition result of the FFT / LSE method in frequency domain is correct and it can be used to make the parameters of excitation system Recognition