基于小信号建模的微电网下垂控制稳定性分析

基于小信号建模的微电网下垂控制稳定性分析
摘要：微电网的系统参数的设计对系统的稳定性和动态特性有着十分重要的作用。为了研究系统参数对下垂控制稳定性和动态特性的影响,本文提出基于小信号建模的微电网下垂控制稳定性分析方法。该方法对微电网某个稳态工作点进行小信号建模,采用根轨迹方法对建立的微电网下垂控制小信号模型进行分析。通过绘出各系统参数(如线路阻抗值、有功下垂系数、无功下垂系数、滤波时间常数等)不同取值时的特征根位置,来判断其值对系统稳定性的影响,最终确定出参数的范围。分析结果表明,模型设计出的系统参数能够满足稳定性与动态响应方面的要求,可以为设计系统参数提供参考。

Abstract:System parameters play a significant role in the stability and dynamic characteristics of the microgrid. The stability analysis of droop control in the microgrid is proposed based on small-signal model to study the impact of system parameter of microgrid on the stability and dynamic characteristics of droop control in this paper. By using of the proposed method, the small-signal model is established at the point of the steady state, the small-signal model of droop control built by root locus method is analyzed. Through plotting the latent root location of each system parameter (such as line impedance value, droop coefficient of active power, filter time constant, etc.) with different values, the impact of its value on system stability is judged. The analysis results indicate that the parameters obtained by this model can meet the requirement of the stability and the dynamic response of the system, and provide a directional guidance for designing system parameters.

标题：基于小信号建模的微电网下垂控制稳定性分析
英文标题：Stability Analysis on Droop Control of Microgrid Based on Small-signal Model

作者：王文帝, 徐青山, 丁茂生, 李强, 辛建波, 许庆强,

关键词：微电网, 下垂控制, 小信号模型, 根轨迹, 稳定性,

发表日期：2014-06-09

2025-1-25 21:10 上传 基于小信号建模的微电网下垂控制稳定性分析.pdf

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