电力系统小信号稳定区域拓扑特性研究

2006 IEEE Power Engineering Society General Meeting Pub Date : 2006-10-16 DOI:10.1109/PES.2006.1709022

H. Jia, Xiaodan Yu, Pei Zhang

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引用次数: 8

摘要

本文对电力系统小信号稳定区域的拓扑特性进行了初步研究。首先，简要回顾了非线性动力系统和小信号稳定域的一些必要的背景理论。然后，给出了一个小信号稳定区内存在空穴(不稳定区)的例子。在分岔分析的基础上进行了理论研究，找出了造成这种现象的原因。结果表明，小信号稳定区空穴的产生是由一个二阶简并Hopf分岔引起的，而空穴的破裂是由两个Hopf分岔并发引起的。本文的研究有助于理解电力系统小信号稳定域的拓扑特性

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Topological characteristic studies on power system small signal stability region

Topological characteristics of the power system small signal stability region are tentatively studied in this paper. First, some necessary background theories on nonlinear dynamic system and small signal stability region are briefly reviewed. Then, we present an example that there exists a hole (instability region) inside the small signal stability region. Theoretical study is performed to find the cause of this phenomenon based on bifurcation analysis. It is found that occurrence of the hole in the small signal stability region is caused by a 2-order degenerated Hopf bifurcation, while breaking of the hole is caused by concurrence of two Hopf bifurcations. Studies of this paper are helpful to understand the topological characteristics of the small signal stability region in power systems

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2006 IEEE Power Engineering Society General Meeting

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