考虑主轴疲劳载荷的双馈风电场频率响应策略

刘心; 王瀚博; 刘颖明; 王黎明; 孙伶玉

doi:doi:10.19912/j.0254-0096.tynxb.2024-1399

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考虑主轴疲劳载荷的双馈风电场频率响应策略

更新时间：2026-03-06

- 考虑主轴疲劳载荷的双馈风电场频率响应策略
- Vol. 47, Issue 2, Pages: 418-427(2026)
- 作者机构：
- 作者简介：
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- DOI：doi:10.19912/j.0254-0096.tynxb.2024-1399
  CLC： O328
- Online First：05 March 2026，
  
  Published：05 March 2026
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刘心, 王瀚博, 刘颖明, et al. 考虑主轴疲劳载荷的双馈风电场频率响应策略[J]. 2026, 47(2): 418-427.
DOI：

刘心, 王瀚博, 刘颖明, et al. 考虑主轴疲劳载荷的双馈风电场频率响应策略[J]. 2026, 47(2): 418-427. DOI： doi:10.19912/j.0254-0096.tynxb.2024-1399.

摘要

为降低风电场内各台基于虚拟同步发电机（VSG）控制策略的双馈风电机组在频率响应过程中积累的主轴疲劳载荷

提出一种考虑主轴疲劳载荷的阻尼系数分配策略。首先

建立可量化反映功率变化与频率变化动态联系的负荷频率控制模型。其次

推导VSG控制策略在机组能量传导过程中

其阻尼系数与主轴力矩、电网频率之间的离散化模型

并基于该模型、机组运行状态和电网频率

构建场内主轴疲劳载荷最小化的目标函数及其约束条件。最后

基于VSG场站控制器中的fmincon算法在线求解各台机组的等效阻尼系数

并将所求解出的等效阻尼系数转化为分配至各台机组的阻尼系数。仿真结果验证了所提出分配策略的优越性。

Abstract

To reduce the accumulated fatigue load on the main shaft during frequency response for each doubly-fed wind turbine （DFWT） within a wind farm operating under a virtual synchronous generator （VSG） control strategy

a damping coefficient allocation strategy considering main shaft fatigue load is proposed. First

a load-frequency control model quantifying the dynamic relationship between power variation and frequency variation is established. Second

a discretized model relating the VSG control strategy’s damping coefficient to shaft torque and grid frequency during energy transfer is derived. Based on this model

unit operating status

and grid frequency

an objective function and its constraints are formulated to minimize shaft fatigue load across the wind farm. Finally

the fmincon algorithm within the VSG station controller is employed to solve for the equivalent damping coefficients of each unit online. These equivalent damping coefficients are then converted into damping coefficients allocated to each unit. Simulation results validate the superiority of the proposed allocation strategy.

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references

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