Li Wei, Zuo Xianghong, Zhang Zhenxiao, Nian Heng, Sun Dan, Xing Yanna
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Dynamic Coordinated Control and Capacity Optimization Method for Voltage Sag Compensation with Energy Storage Connected in Series and in Parallel
Aiming at the compensation of the voltage sag caused by impact load and the improvement of power supply quality, the energy storage is used to compensate the grid voltage by connected in series and parallel to the grid. This paper first analyzed the mechanism of the voltage sag caused by power fluctuations. Then a dynamic coordinated control strategy is proposed with the research on the characteristics of series side and parallel side. Based on the coordinated control, the storage capacity configuration of the energy storage is optimized which can reduce capacity configuration. Simulation results verify the feasibility and effectiveness of the proposed methods.
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