Research on Control Strategy of Participating in Frequency Regulation for the System of DFIG-Based Wind Farm Connected to the Grid via Fractional Frequency Transmission System

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外文摘要：Fractional frequency transmission。， as a new type of wind power grid-connection method。， is suitable for large-capacity and long-distance transmission of electric power。 However。， the access of large-scale wind power will lead to the reduction of power system inertia and frequency stability。 For the fractional-frequency doubly-fed wind power system。， this paper utilizes the static electric energy stored in the capacitance of the modular multi-level matrix converter (M3C) submodule。， as well as the kinetic energy and spare power in the wind turbine。， to design the M3C virtual inertia control strategy。， the doubly-fed wind turbine frequency control strategy and the joint frequency control strategy。 The corresponding simulation model is established in the PSCAD/EMTDC。 And the simulation results show that the proposed control strategy can improve the nadir frequency (NF) of once-drop。， slows down the rate of change of frequency (RoCoF)。， and effectively enhances the stability of the industrial frequency (IF) system。

外文关键词：

SimulationDoubly fed induction generatorsPower system stabilityWind power generationWind farmsStability analysisWind turbines

作者：

Xiaoming Zou、Chenggen Wang、Qiang Li、Sulei Wang、Xiaoxiao Xing、Lianhui Ning

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作者单位：

State Grid Jiangsu Electric Power, Company Limited Research Institute, Nanjing, China

School of Electrical Engineering Xi'an Jiaotong University, Xi'an, China

会议名称：

International Electrical and Energy Conference

会议地点：

Harbin(CN)

会议母体文献：

2024 IEEE 7th International Electrical and Energy Conference

页码：

4535-4541

出版时间：

2024

DOI：

10.1109/CIEEC60922.2024.10583523