风速分布差异对双馈发电机绕组不对称故障特性影响分析

绳晓玲; 程紫瑶; 韩旭超; 王天翔; 万书亭; 张雄

doi:doi:10.19912/j.0254-0096.tynxb.2024-0972

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风速分布差异对双馈发电机绕组不对称故障特性影响分析

更新时间：2025-12-17

- 风速分布差异对双馈发电机绕组不对称故障特性影响分析
- Issue 10, Pages: 618-627(2025)
- 作者机构：
- 作者简介：
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- DOI：doi:10.19912/j.0254-0096.tynxb.2024-0972
  CLC： M315
- Published Online：31 October 2025，
  
  Published：31 October 2025
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绳晓玲, 程紫瑶, 韩旭超, et al. 风速分布差异对双馈发电机绕组不对称故障特性影响分析[J]. 2025, (10): 618-627.
DOI：

绳晓玲, 程紫瑶, 韩旭超, et al. 风速分布差异对双馈发电机绕组不对称故障特性影响分析[J]. 2025, (10): 618-627. DOI： doi:10.19912/j.0254-0096.tynxb.2024-0972.

摘要

为了更准确地掌握双馈风力发电机绕组不对称故障的特征

从叶轮扫掠面内的实际风况出发

研究风剪切和塔影效应引起的风速时空分布差异对绕组不对称故障特征的影响。首先分析考虑风速时空分布差异后的等效风速模型

并基于该模型对机组特性进行研究

得到考虑风速时空分布差异的定子电流特性

然后分析风速分布差异参数（风剪切指数、塔筒半径和中心距）对定子电流特性的影响。接下来利用Matlab/Simulink平台进行仿真验证

并通过双馈风力发电机组故障模拟平台进行实验验证。研究结果表明

与现有的基于轮毂处平均风速的故障特征相比

考虑风速时空分布差异后

定子电流基频和3倍频的两侧均出现了3kP（k为整数

P为叶轮转频）为主的调制频率;不同风速分布参数会对上述的特征频率产生不同的影响。研究结果完善了双馈风电机组故障诊断理论体系

对实际故障诊断有一定的理论指导意义。

Abstract

In order to accurately characterize the winding asymmetry fault in a doubly-fed induction generator

this study investigates the effect of spatio-temporal wind speed variations （caused by wind shear and tower shadow） based on actual wind conditions across the rotor swept area. Firstly an equivalent wind speed mode that accounts for the spatio-temporal variations of wind speed was develop-ed

and investigates the corresponding stator current characteristics based on this model was investigated. It then analyzes the impact of key wind speed distribution parameters

including the wind shear exponent

tower radius

and hub offset

on the stator current behavior. Also the influence of wind speed distribution difference parameters （wind shear index

tower radius and center distance） on the stator current characteristics was analyzed. Subsequently

simulation verification was conducted using the MATLAB/Simulink platform

and experimental verification was performed on a doubly-fed wind turbine fault simulation platform. The results show that

compared with the existing fault characteristics based on the average wind speed at the hub

the modulation frequencies of 3 （ is an integer

is the rotation frequency） appear on both sides of the stator current fundamental frequency and its third harmonic when wind speed spatio-temporal distribution differences are considered. Different wind speed distribution parameters affect these characteristic frequencies to varying degrees. The research results improve the fault diagnosis theory system of doubly-fed wind turbines and have a certain theoretical significance for practical fault diagnosis.

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references

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