Doubly-Fed Induction Generator Wind Farm Aggregated Model Based on Crowbar and Integration Simulation Analysis
Wang Zhenshu1,Liu Yan2,Lei Ming3,Bian Shaorun4,Shi Yunpeng1
1. School of Electrical Engineering Shandong University Jinan 250061 China; 2. Qingdao Power Supply Company of National Grid Qingdao 266100 China; 3. Dispatch and Control Center, State Grid Shandong Electric Power Corporation Jinan 250001 China; 4. Licheng Power Supply Company of National Grid Licheng 250100 China
Abstract：The low voltage ride-through issue is an urgent problem for doubly-fed induction generator(DFIG) wind farm integration. Thus, a DFIG wind farm aggregation method based on the crowbar is proposed in this paper. Through analyzing the mechanism of DFIG during grid fault, the equation of DFIG rotor current is calculated. Activation of the crowbar can be determined by the DFIG rotor current, and then the wind generators can be aggregated into two equivalent models based on the condition that the crowbar is activated or not. Capacity-weighted method is used to calculate the parameters of each equivalent model. The DFIG wind farm two-machine model can be built. Simulation analysis is carried out to demonstrate that the proposed method can better reflect the changes of wind farm caused by the activation of crowbar of part of DFIGs, compared with a single generator aggregated model. The wind farm low voltage ride-through is enhanced using fast response reactive power compensator.
王振树,刘岩,雷鸣,卞绍润,石云鹏. 基于Crowbar的双馈机组风电场等值模型与并网仿真分析[J]. 电工技术学报, 2015, 30(4): 44-51.
Wang Zhenshu,Liu Yan,Lei Ming,Bian Shaorun,Shi Yunpeng. Doubly-Fed Induction Generator Wind Farm Aggregated Model Based on Crowbar and Integration Simulation Analysis. Transactions of China Electrotechnical Society, 2015, 30(4): 44-51.
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2015, Vol. 30 
