Dynamic Characteristic Analysis of Doubly-fed Induction Generator Low Voltage Ride-through

被引：7
作者：
Shi, L. [1 ]
Chen, N. [1 ]
Lu, Q. [1 ]
机构：
[1] Sub Branch State Grid Corp China, State Grid Elect Power Res Inst, Nanjing 210003, Jiangsu, Peoples R China
来源：
2012 INTERNATIONAL CONFERENCE ON FUTURE ENERGY, ENVIRONMENT, AND MATERIALS, PT C | 2012年 / 16卷
关键词：
Low voltage ride through (LVRT); doubly fed induction generator (DFIG); crowbar; voltage stability; WIND TURBINES;
D O I：
10.1016/j.egypro.2012.01.239
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
For studying the impacts of wind turbines integrated into grid, the relation between the protection of doubly-fed induction generator (DFIG) during low voltage fault and the dynamic characteristic of grid is established from the points of generator operation constrains and district grid voltage stability. Then the resistance value and switching strategy of crowbar are discussed. Based on analyzing the electric characteristic of the voltage or current during the short-circuit fault in wind turbines with crowbar switching, the equation to estimate peak current of stator and rotor of DFIG with crowbar switching and the value range of crowbar resistance are derived. The numeric test analyzes the impacts of crowbar switching on district grid voltage stability with different fault types, crowbar switching time and crowbar resistance values. Also the interaction impact of crowbar switching on multi-wind farms is analyzed. The results show that reasonable crowbar resistance value and switching strategy can improve low voltage ride through (LVRT) ability of wind turbines and reduce bad impacts on district grid voltage stability with large-scale crowbar switching of wind farms. (C) 2011 Published by Elsevier B. V. Selection and/or peer-review under responsibility of International Materials Science Society.
引用
收藏
页码：1526 / 1534
页数：9
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