中国电力 ›› 2017, Vol. 50 ›› Issue (2): 144-149.DOI: 10.11930/j.issn.1004-9649.2017.02.144.06

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基于灵敏度分析的直驱永磁风机并网系统小干扰稳定优化研究

郭永明1, 游晓科2, 刘观起1   

  1. 1. 华北电力大学 电气与电子工程学院,河北 保定 071003;
    2. 内蒙古电力(集团)有限责任公司包头供电局,内蒙古 包头 014000
  • 收稿日期:2016-10-25 出版日期:2017-02-20 发布日期:2017-02-22
  • 作者简介:作者简介:郭永明(1990—),男,河北秦皇岛人,硕士研究生,从事电力系统分析、运行与控制方面的研究。E-mail:1137347666@qq.com

Small Signal Stability Optimal Designing of Direct-Driven Permanent Magnet Wind Power System Based on Sensitivity Analysis Method

GUO Yongming1, YOU Xiaoke2, LIU Guanqi1   

  1. 1. School of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071003, China;
    2. Inner Mangolia Electric Power (Group) Co., Ltd, Baotou Power Supply Company, Baotou 014000, China
  • Received:2016-10-25 Online:2017-02-20 Published:2017-02-22

摘要: 通过分析风力发电系统的工作原理,建立了双脉冲宽度调制(PWM)控制策略下直驱永磁风机并网系统的数学模型。在此基础上,在静态工作点处对数学模型进行线性化处理,建立了相应的小信号数学模型。利用特征值灵敏度分析法直观地筛选出影响系统小干扰稳定性的关键因素。据此,从系统的设计角度出发,提出了风机并网系统参数的优化方案。结果表明,通过参数的优化,风机并网系统的稳定性得到了改善。

关键词: 风力发电, 直驱永磁风机, 小信号数学模型, 灵敏度分析法, 小干扰稳定性

Abstract: Based on an analysis of the working principle of wind power generation system, a mathematical model of the direct-driven permanent magnet wind power system with dual PWM converter is established in this paper. And then, the mathematical model is linearized at DC operating point to establish the small signal mathematical model. The eigenvalue sensitivity analysis method is used to intuitively sort out the key factors that affect the small signal stability of the system. From the point view of design, A parameter optimization scheme of grid-connected wind power generation system is proposed. The result shows that the stability of the power system is improved.

Key words: wind power generation, direct-driven permanent magnet synchronous generator, small signal mathematical model, sensitivity analysis method, small signal stability

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