论文标题
对电力系统振荡的扩展分析在接近谐振的情况下振荡
Extended Prony Analysis on Power System Oscillation Under a Near-Resonance Condition
论文作者
论文摘要
大型干扰下的功率系统振荡通常表现出扭曲的波形，如越来越多部署的相量测量单元所捕获的。原因之一是在几种受发电机的非线性瞬态动力学影响的几种主要模式中发生了近谐振条件。本文提出了一种扩展基于测量的模态分析的扩展的Prony分析方法。基于正常形式的理论，它比较了对瞬态和频线后波形的分析，以区分由近谐振条件与自然模式引起的共振模式，以便该方法比传统的prony分析方法可以提供更准确的模态性能，尤其是对于大型干扰。首先在Kundur的两个面积系统上详细介绍了该新方法，然后在IEEE 39-BUS系统上进行了测试，以在近乎谐振的情况下显示其性能。
Power system oscillations under a large disturbance often exhibit distorted waveforms as captured by increasingly deployed phasor measurement units. One cause is the occurrence of a near-resonance condition among several dominant modes that are influenced by nonlinear transient dynamics of generators. This paper proposes an Extended Prony Analysis method for measurement-based modal analysis. Based on the normal form theory, it compares analyses on transient and post-transient waveforms to distinguish a resonance mode caused by a near-resonance condition from natural modes so that the method can give more accurate modal properties than a traditional Prony Analysis method, especially for large disturbances. The new method is first demonstrated in detail on Kundur's two-area system and then tested on the IEEE 39-bus system to show its performance under a near-resonance condition.
