Extended Prony Analysis on Power System Oscillation Under a Near-Resonance Condition
Abstract
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.
Keywords
Cite
@article{arxiv.2003.09651,
title = {Extended Prony Analysis on Power System Oscillation Under a Near-Resonance Condition},
author = {Tianwei Xia and Zhe Yu and Kai Sun and Di Shi and Zhiwei Wang},
journal= {arXiv preprint arXiv:2003.09651},
year = {2020}
}
Comments
To be presented at the IEEE PES General Meeting in 2020