Load Characteristic Analysis of Grid Fault Ride-through Process for DFIG Based Large Wind Turbine

被引：0
|
作者：
Ying Y. [1 ,2 ]
Sun Y. [1 ,2 ]
Yang J. [1 ,2 ]
Hong M. [1 ,2 ]
机构：
[1] Zhejiang Windey Co., Ltd., Hangzhou
[2] Zhejiang Key Laboratory of Wind Power Technology, Hangzhou
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2020年 / 44卷 / 12期
基金：
国家重点研发计划;
关键词：
Doubly-fed induction generator (DFIG) based wind turbine; Grid fault ride-through; Load characteristics; Side-to-side vibration of tower; Torsional vibration of drive train;
D O I：
10.7500/AEPS20190911006
中图分类号：
学科分类号：
摘要：
Currently, the research on the load characteristics of grid fault ride-through of doubly-fed induction generator (DFIG) based wind turbines is insufficient. Firstly, based on the spring-damping-mass modeling method, response models of DFIG based wind turbines for the load of drive train shafting and the side-to-side vibration of tower are established, and then the analytical expressions of the system natural resonance frequency and damping coefficient are obtained. The theoretical analysis results show that the grid fault ride-through process may cause torsional vibration of the drive train and the side-to-side vibration of tower. Secondly, a co-simulation model of GH Bladed and MATLAB is established, and the effects of symmetrical and asymmetrical grid fault ride-through processes on load characteristics of the drive train shafting and tower based on the co-simulation model are studied. Simulation results verify the correctness of the theoretical analysis. Finally, the influence of different active power recovery strategies on the load of wind turbines is further analyzed. The research results show that the over-fast active power recovery rate will significantly increase the load of wind turbines. Therefore, the principle of "mechanically friendly" grid fault ride-through control for wind turbines is further proposed. © 2020 Automation of Electric Power Systems Press.
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收藏
页码：131 / 138
页数：7
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