Simulation on Inter-turn Short Circuit Faults of Stator Winding Via Finite-element Method for DFIG

ZHANG Zhi-xin1; MA Hong-zhong1; QIAN Ya-yun1; CHENG Jun1

doi:10.13296/j.1001-1609.hva.2012.08.006

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Simulation on Inter-turn Short Circuit Faults of Stator Winding Via Finite-element Method for DFIG

更新时间：2025-04-26

- Simulation on Inter-turn Short Circuit Faults of Stator Winding Via Finite-element Method for DFIG
- High VoltageApparatus Vol. 48, Issue 8, Pages: 24-27+33(2012)
- 作者机构：
  
  1. 河海大学能源与电气学院
  2. 南京南瑞继保电气有限公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2012.08.006
  CLC： TM343
- Published：2012
- 稿件说明：
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[1]张志新,马宏忠,钱雅云,程俊.基于有限元分析的双馈异步发电机定子绕组匝间短路故障诊断研究[J].高压电器,2012,48(08):24-27+33.

ZHANG Zhi-xin1, MA Hong-zhong1, QIAN Ya-yun1, et al. Simulation on Inter-turn Short Circuit Faults of Stator Winding Via Finite-element Method for DFIG[J]. High voltageapparatus, 2012, 48(8): 24-27+33.
[1]张志新,马宏忠,钱雅云,程俊.基于有限元分析的双馈异步发电机定子绕组匝间短路故障诊断研究[J].高压电器,2012,48(08):24-27+33. DOI： 10.13296/j.1001-1609.hva.2012.08.006.

ZHANG Zhi-xin1, MA Hong-zhong1, QIAN Ya-yun1, et al. Simulation on Inter-turn Short Circuit Faults of Stator Winding Via Finite-element Method for DFIG[J]. High voltageapparatus, 2012, 48(8): 24-27+33. DOI： 10.13296/j.1001-1609.hva.2012.08.006.

摘要

笔者基于有限元分析软件Maxwell 2D建立了双馈异步发电机的仿真模型

通过改变模型中短路匝数和短路电阻的大小来模拟电机的不同短路情况

对不同情况下的电机进行仿真计算得出:定子发生匝间短路故障后

会在定子中产生负序电流

并随着故障严重程度的增加而增大

同时负序电流会受到电源不对称的影响

在用负序电流进行故障诊断时

需要补偿这些非电机故障因素的影响

同时负序电流也会受到电机负载情况的影响

且随着负载的增大负序电流有微弱增大。另外

定子发生匝间短路故障后

定子三相电流不再对称

故障相电流恒最大

而非故障两相的相位差偏离120°最大

且随着故障的加剧而明显增大。

Abstract

We establish a doubly-fed induction generator（DFIG）model with the finite element analysis software Maxwell 2D to simulate different inter-turn short circuit faults of stator winding with varying short circuit number and resistance.Simulations show that the inter-turn short circuit faults induce negative sequence current in DFIG stator

and the negative sequence current increases with the severity of inter-turn short circuit fault.Moreover

symmetric power source and load also influence the negative sequence current.So the impacts of these non-fault factors must be compensated when the negative sequence current is used in the fault diagnosis.In addition

as an inter-turn short circuit fault occurs

the stator’s three-phase current is no longer symmetric

where the fault-phase current is always the biggest

but the phase separation of other two phases without fault gets the maximum 120°.

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