电能质量暂态扰动信号的Prony辨识

Prony Identification of Power Quality Transient Disturbance Signal

针对电能质量的暂态扰动信号,提出一种基于Prony算法的信号辨识方法。算法通过对有限个指数函数的最小二乘拟合,可辨识出各振荡模式的幅值、衰减因子、频率、初相位等信息。仿真结果验证了Prony算法对分析此类问题的有效性。

In view of the transient disturbance signal of power quality, this paper presents an identification method of analytic signal based on the Prony algorithm. The new method can estimate all kinds of components character, including magnitude, frequency and initial phase produced by accurately fitting the finite exponential functions with least-square method. Simulation results verifies the validity of the developed method.