大规模双馈风电场次同步谐振的分析与抑制

WANG Liang

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大规模双馈风电场次同步谐振的分析与抑制

更新时间：2025-08-13

- 大规模双馈风电场次同步谐振的分析与抑制
- Automation of Electric Power Systems Vol. 38, Issue 22, Pages: 26-31(2014)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2014
- 稿件说明：
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WANG Liang. [J]. Automation of electric power systems, 2014, 38(22): 26-31.
DOI：

WANG Liang. [J]. Automation of electric power systems, 2014, 38(22): 26-31. DOI：

摘要

已有的运行经验表明

风电场接入含有固定串补的系统时

存在诱发次同步谐振(SSR)的风险。因此

有必要对风电场发生SSR现象的机理做深入分析

以便提出相应的抑制措施。文中首先根据国内某地区风电场的实际参数建立了应用于SSR分析的等值模型

通过仿真呈现了该模型发生SSR的情形;然后

利用特征值法分析了风速、并网风力发电机台数以及双馈感应发电机(DFIG)控制参数等对系统SSR频率和阻尼特性的影响;并进一步推导了等值模型用于SSR分析的等效电路

详细分析了风速、发电机台数和DFIG控制参数等影响SSR特性的机理;综合所有的分析指出

风电场的SSR现象与轴系扭振无关

是一种特殊的电气谐振。最后

提出了抑制风电场SSR的方案

并通过仿真和特征值分析进行了验证。

Abstract

The existing operation experiences indicate that subsynchronous resonance (SSR) may occur in wind farms which are connected to series compensated systems. Hence

it is necessary to analyze the mechanism of SSR in wind farms

which will contribute to the solutions. Firstly

an equivalent system model for the analysis of SSR is established based on the real parameters of a wind farm in China. The SSR phenomenon of this model is presented by time domain simulation. The impacts on SSR from the factors such as wind speed

number of generators

and control parameters of doubly-fed induction generators (DFIGs) are checked using eigenvalue analysis. An equivalent circuit is deduced for the mechanism analysis of SSR. Based on this circuit

the mechanism of SSR impacts from aforementioned factors are analyzed in details. Considering all the analysis

it is pointed out that the SSR phenomenon of wind farms is a special electrical resonance

and nothing to do with the generator shaft. Solutions of SSR in wind farm are also proposed and are verified by simulations and eigenvalue analysis.

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