Prony算法分析低频振荡的有效性研究

The Validity Study of Prony Analysis for Low Frequency Oscillation in Power System

在分析Prony算法的理论基础上,讨论信号噪声、信号的非平稳性对算法的影响,提出相应的改进策略。分别对仿真振荡信号和现场实测振荡信号进行Prony分析,得出较满意的结果,说明Prony算法在信号分析中,可提供有效、精确的分析结果,为电力系统低频振荡的研究提供了一种有力的分析工具。

The Prony algorithm is analyzed in this paper.The influence of signal noise and time-variant on the al-gorithm is then discussed.And some improving policy is introduced.The method is tested by simulation data of low frequency oscillation and field data provided by fault recorder.The test result shows a potential advantage of this algorithm in low frequency oscillation study of power system.