A new structure for doubly fed induction generator (DFIG) wind farms with coordinated power control under grid fault conditions are proposed in this paper. The proposed structure uses one grid side converter (GSC) and one energy storage system (ESS) for the entire wind farm unlike conventional structures, which have one GSC for each of the DFIGs. A converter loss decrease and a reliability enhancement are some of the advantages of the proposed wind farm, under normal operating conditions. The proposed wind farm follows the new grid codes to remain connected to the grid. In addition, it supports the network voltage and frequency stability by generating reactive and active power during and after faults. The ESS is coordinated with the wind farm to generate smooth active power under normal operation. This improves the low voltage ride-through capability of the wind farm under-voltage fault conditions and enhances the frequency response of the wind farm under frequency faults. MATLAB/Simulink software was used to simulate the proposed wind farm structure. An experimental setup was also provided to test the operation of the proposed power circuit topology.

中文翻译：

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配备ESS的DFIG风电场在电网故障条件下具有协调的功率控制

本文提出了一种在电网故障条件下具有协调功率控制的双馈感应发电机 (DFIG) 风电场的新结构。与传统结构不同，该结构为整个风电场使用一个网侧变流器 (GSC) 和一个储能系统 (ESS)，传统结构为每个 DFIG 配备一个 GSC。在正常运行条件下，变流器损耗降低和可靠性增强是所提议的风电场的一些优点。拟建的风电场遵循新的电网规范以保持与电网的连接。此外，它通过在故障期间和之后产生无功和有功功率来支持网络电压和频率的稳定性。ESS与风电场协调，在正常运行情况下产生平稳的有功功率。这提高了风电场欠压故障条件的低电压穿越能力，并增强了风电场在频率故障下的频率响应。MATLAB/Simulink 软件用于模拟拟议的风电场结构。还提供了一个实验装置来测试所提出的电源电路拓扑的操作。