Diagnosis of stator winding inter-turn short circuit in DFIG based on instantaneous average power in rotor side

被引：0
|
作者：
Ma H. [1 ]
Zhang Y. [1 ]
Wei H. [1 ]
Fu M. [1 ]
Huang C. [1 ]
机构：
[1] College of Energy and Electrical Engineering, Hohai University, Nanjing
来源：
| 2018年 / Electric Power Automation Equipment Press卷 / 38期
基金：
中国国家自然科学基金;
关键词：
Doubly-fed induction generator; Multi-loop method; Rotor average instantaneous power spectrum; Spectrum analysis; Stator inter-turn short circuit;
D O I：
10.16081/j.issn.1006-6047.2018.04.022
中图分类号：
学科分类号：
摘要：
A method of stator winding inter-turn short circuit diagnosis for DFIGs(Doubly-Fed Induction Generators) is proposed due to the measurability of rotor parameters of DFIGs. With the consideration of high-order harmonic, the expressions of instantaneous rotor average power in conditions of normal and stator winding inter-turn short circuit are deduced, then the multi-loop mathematical model of DFIGs is established, and the simulation calculation of rotor ave-rage instantaneous power in conditions of normal and stator winding inter-turn short circuit in different degrees is carried out. The variation of harmonic component of instantaneous rotor average power is obtained by the spectrum analysis of simulative results, which verifies the correctness of theoretical analysis. The results also show that the rotor ave-rage instantaneous power spectrum is intuitional and simple, the 2nd-order harmonic components are not affected by slip ratio and the high-order harmonic components have strong sensitivity to stator winding inter-turn short circuit. © 2018, Electric Power Automation Equipment Press. All right reserved.
引用
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页码：151 / 156
页数：5
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