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Voltage/Reactive Power Coordination Control Between Energy Storage Power Station and Clean Energy Plant Connected toAC/DC Hybrid System

This paper studies voltage/reactive power coordination control between energy storage system and clean energy plant connected to AC/DC hybrid system. As energy storage power stations are widely integrated to grid, they pose larger influence on clean energy. It occurs that voltage/reactive power characteristic of energy storage plant and clean energy plant becomes complicated to control and analyze. For the sake of studying the energy storage system and clean energy plant’s voltage/reactive power characteristics, a model of energy storage and clean energy plant connected to AC/DC hybrid system is proposed, with a proper coordination control strategy of PCC voltage/reactive power. Then, the coordination control strategy is conducted under different conditions in time domain simulation to analyze voltage/reactive power dynamics of system. Lastly, the experiment on hardware-in-the-loop(HIL) system is finished to validate proposed voltage/reactive power coordination control above.