风电并网系统次同步振荡的频域模式分析

占颖; 吴琛; 谢小荣; 李文云; 马宁宁; 黄伟

doi:10.7500/AEPS20191112004

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风电并网系统次同步振荡的频域模式分析

学术研究 | 更新时间：2025-06-16

- 风电并网系统次同步振荡的频域模式分析
- Frequency Domain Modal Analysis of Subsynchronous Oscillation in Grid-connected Wind Power System
- 电力系统自动化-方正平台 2020年44卷第18期页码：90-97
- 作者机构：
  
  1.清华大学电机工程与应用电子技术系，北京市100084
  2.电力系统及发电设备控制和仿真国家重点实验室，清华大学，北京市 100084
  3.云南电力调度控制中心，云南省昆明市 650011
- 作者简介：
  
  占颖(1995—)，女，博士研究生，主要研究方向：电力系统次同步振荡的分析。E-mail：zhan-y17@mails.tsinghua.edu.cn
  吴琛(1974—)，女，硕士，教授级高级工程师，主要研究方向：电力系统及其自动化。E-mail：elfwu@21cn.com
  谢小荣(1975—)，男，通信作者，教授，博士生导师，主要研究方向：电力系统次同步振荡的分析与抑制。E-mail：xiexr@tsinghua.edu.cn
- 基金信息：
  
  国家重点研发计划资助项目(2016YFB0900100)
- DOI：10.7500/AEPS20191112004
  中图分类号：
- 收稿日期：2019-11-12，
  
  修回日期：2020-05-29，
  
  网络出版日期：2020-07-22，
  
  纸质出版日期：2020-09-25
- 稿件说明：
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占颖,吴琛,谢小荣等.风电并网系统次同步振荡的频域模式分析[J].电力系统自动化,2020,44(18):90-97.

ZHAN Ying,WU Chen,XIE Xiaorong,et al.Frequency Domain Modal Analysis of Subsynchronous Oscillation in Grid-connected Wind Power System[J].Automation of Electric Power Systems,2020,44(18):90-97.
占颖,吴琛,谢小荣等.风电并网系统次同步振荡的频域模式分析[J].电力系统自动化,2020,44(18):90-97. DOI： 10.7500/AEPS20191112004.

ZHAN Ying,WU Chen,XIE Xiaorong,et al.Frequency Domain Modal Analysis of Subsynchronous Oscillation in Grid-connected Wind Power System[J].Automation of Electric Power Systems,2020,44(18):90-97. DOI： 10.7500/AEPS20191112004.

摘要

随着风电等新能源渗透率的提高，大量电力电子设备接入电力系统，电力电子变流器与大电网间的相互作用引发了多起新型次同步振荡事故。为了深入研究风电并网系统的振荡特性，文中提出了频域模式分析法。首先，建立目标系统的阻抗网络模型，并形成网络的节点导纳矩阵和回路阻抗矩阵。然后，通过求解矩阵行列式零点获得系统的振荡模式。接着，定义了节点（支路）的参与因子、可观度和可控度，并基于阻抗网络模型推导出了这些指标的计算公式，进而得到振荡路径和扰动源的信息。最后，将所提方法应用到实际风电并网系统中，通过仿真验证了方法的有效性。

Abstract

With the increasing penetration of renewable energy sources such as wind power

a large number of power electronic devices are connected to the power system. The interaction between the power electronic converter and the bulk power grid has caused many new subsynchronous oscillation accidents. In order to deeply study the oscillation characteristics of grid-connected wind power system

this paper proposes a frequency domain modal analysis method. Firstly

the impedance network model (INM) of the target system is built

and the nodal admittance matrix and loop impedance matrix of the network are obtained. Secondly

the oscillation modes of the system are obtained by finding the zeros of the determinant of matrices. Thirdly

the nodal (branch) participation factors， observability and controllability for each oscillation mode are defined and the INM-based formulae are derived so as to identify the oscillation path and disturbance source. Finally

the proposed method is applied to the actual grid-connected wind power system

and the effectiveness of the method is verified by simulation.

关键词

Keywords

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