电网电压不平衡度对DFIG运行特性的影响

张谦; 李凤婷

张谦,李凤婷.电网电压不平衡度对DFIG运行特性的影响[J].电测与仪表,2016,53(23):.
Zhang Qian,Li Fengting.The influence of the unbalanced grid voltage to operational characteristics of Doubly Fed Induction Generator[J].Electrical Measurement & Instrumentation,2016,53(23):.

电网电压不平衡度对DFIG运行特性的影响

The influence of the unbalanced grid voltage to operational characteristics of Doubly Fed Induction Generator

DOI：

中文关键词: 电网电压不平衡风力发电双馈感应发电机运行特性

英文关键词:unbalanced grid voltage wind power doubly-fed induction generator (DFIG) operating characteristics

基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目）

作者中文名	作者英文名	单位
张谦	Zhang Qian	新疆大学电气工程学院
李凤婷	Li Fengting	新疆大学电气工程学院

摘要点击次数: 1857

中文摘要:

分析了电网电压不平衡理论以及常见的电压不平衡情况,推导了电网电压不平衡时双馈感应发电机(doubly-fed induction generator,DFIG)的输出功率,研究了电网电压不平衡时双馈感应发电机的运行特性。在Matlab/Simulink中搭建DFIG并网模型,进一步仿真研究了电网电压不平衡情况下DFIG的运行特性。研究表明,随着不平衡度的增加,风机输出有功功率和无功功率、定子侧有功功率和无功功率、转子侧有功功率和无功功率的脉动幅值近似线性增大。在同一不平衡度下,有功功率的脉动幅值高于无功功率的脉动幅值。

英文摘要:

Based on the analysis of the unbalanced grid voltage theory and common presentation of voltage unbalance ,the out-put power of DoublySFedSmotor is deduced ,and the operating characteristics of DFIG is studied during unbalanced grid voltage .For the further research on the operating characteristics of DFIG ,the connection model of the DFIG and grid is built in Matlab / Simulink .Results have shown that ,with the increasing degree of the unbalance ,the out-put pulsation amplitude of active and reactive of the DFIG and stator-side and rotor-side , increase almost linearly .In the same unbalance, active pulsation amplitude is higher than the reactive power pulsation amplitude.

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