基于改进Prony法的电力系统低频振荡快衰分量辨识

牟建伟,尚亚男,刘文刚,戴思源,江澎,王保力,王延勃

An Identification Method Based on Improved Prony for Fast Attenuate Component of the Power System Low-Frequency Oscillation

Mu Jianwei,Shang Yanan,Liu Wengang,Dai Siyuan,Jiang Peng,Wang baili,Wang Yanbo

表1 算例信号的参数

Tab.1 The parameters of the example signal

分量序号 频率f/Hz 衰减因子α 幅值A 初相θ/(°) 1 0.423 0 -0.002 7 10.000 0 110.000 0 2 0.420 0 -0.265 2 2.000 0 13.000 0 3 0.247 3 -0.031 1 10.000 0 20.000 0 4 1.034 9 -0.293 6 1.000 0 60.000 0 5 2.400 0 -45.878 8 5.800 0 10.000 0 6 0.900 0 -55.115 6 6.300 0 60.000 0