Feature extraction of stator winding inter-turn short circuit fault in doubly-fed induction generator

ZHAO Yong; WANG Lulu; ZHAO Yihan; Attiq Ur Rehman; CHEN Yu

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Feature extraction of stator winding inter-turn short circuit fault in doubly-fed induction generator

更新时间：2025-09-28

- Feature extraction of stator winding inter-turn short circuit fault in doubly-fed induction generator
- Thermal Power Generation Vol. 45, Issue 8, Pages: 63-67(2016)
- 作者机构：
  
  1. 西安热工研究院有限公司
  2. 西安交通大学电气工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM315
- Published：2016
- 稿件说明：
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ZHAO Yong, WANG Lulu, ZHAO Yihan, et al. Feature extraction of stator winding inter-turn short circuit fault in doubly-fed induction generator[J]. Thermal power generation, 2016, 45(8): 63-67.
DOI：

ZHAO Yong, WANG Lulu, ZHAO Yihan, et al. Feature extraction of stator winding inter-turn short circuit fault in doubly-fed induction generator[J]. Thermal power generation, 2016, 45(8): 63-67. DOI：

摘要

分析了双馈风力发电机定子绕组匝间短路的故障机理

建立了定子绕组匝间短路数学模型

利用MATLAB/Simulink仿真得到了发电机定子绕组匝间短路故障发生时的定子三相电流和匝间环流。研究结果表明:从定子三相电流波形中难以分辨轻微匝间短路;而通过分析不同故障情况下定子电流Park矢量椭圆长半轴和短半轴的长度发现

Park矢量椭圆离心率能够灵敏反映故障并预估故障程度

因此

认为Park矢量椭圆离心率可以作为定子绕组匝间短路故障诊断的特征参量。

Abstract

By analyzing the fault mechanism of stator inter-turn short circuit in doubly-fed induction generator(DFIG)

the mathematical model for the stator inter-turn short circuit fault was established.Numerical simulation was carried out on the platform of MATLAB/Simulink

the three phase currents and inter-turn circulation during the stator inter-turn short circuit fault are acquired.The results show that

it is difficult to distinguish a slight inter-turn short circuit from the stator currents.The eccentricity of Park's vector trajectory is analyzed under different fault conditions.It shows that the eccentricity can be a fault feature because it is sensitive to faults.Therefore

the eccentricity is regarded as a characteristic parameter and can be a basis of fault diagnosis.

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