定子匝间故障下DFIG机组的模型与仿真

doi:10.16182/j.issn1004731x.joss.201801026

摘要/Abstract

摘要： 建立了体现为标准形式状态空间方程的定子匝间故障下DFIG(Doubly Fed Induction Generator)的数学模型。在Matlab环境下建立了其仿真模型——S-函数模块,将之嵌入Matlab内置的DFIG机组（由风机、变流器、相关机械与电气控制以及DFIG组成）仿真例程,构建了定子匝间故障下的DFIG机组仿真模型,这一工作是对Matlab的有益拓展。进而,对DFIG机组在正常与故障情况下的运行稳定性做了仿真分析,结果表明：在低风速与高风速临界情况下,定子匝间故障将导致DFIG机组转速小幅振荡而恶化其运行稳定性。

关键词: 双馈感应发电机, 定子匝间故障, 模型, 仿真, 稳定性

Abstract: The mathematical model of doubly fed induction generator (DFIG) with stator inter-turn fault, which presents itself as standard form state space equation, is deduced and established, for the first time. The corresponding simulation model, i.e. Matlab S-function block is developed and embedded in a Matlab built-in routine simulating DFIG unit comprising wind turbine, converter, related mechanical/electrical control and DFIG. The simulation model of DFIG unit with stator inter-turn fault is established, which is a beneficial extension of Matlab simulation. The stability of DFIG unit under the healthy and faulty conditions is analyzed by using simulation. The results show that stator inter-turn fault leads to small vibration and deteriorates the stability of DFIG unit under the critical conditions of low and high wind speed.

Key words: DFIG (doubly fed induction generator), stator inter-turn fault, model, simulation, stability

中图分类号:

TM315

许伯强, 孙丽玲, 杜文娟. 定子匝间故障下DFIG机组的模型与仿真[J]. 系统仿真学报, 2018, 30(1): 205-215.

Xu Boqiang, Sun Liling, Du Wenjuan. Modeling and Simulation of DIFG Unit with Stator Inter-Turn Fault[J]. Journal of System Simulation, 2018, 30(1): 205-215.

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