LOW VOLTAGE APPARATUS ›› 2022, Vol. 0 ›› Issue (2): 88-94.doi: 10.16628/j.cnki.2095-8188.2022.02.014

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Voltage and Reactive Power Control Strategy of Energy Storage Power Stations in Large New Energy Enriched Areas

FU Meiping1, MAO Jianrong1, SONG Rui2, WANG Guanghui2, FU Guobin2   

  1. 1. XJ Group Co.,Ltd.,Xuchang 461000,China
    2. State Grid Qinghai Electric Power Research Institute,Xining 810008,China
  • Received:2021-09-02 Online:2022-02-28 Published:2022-03-31

Abstract:

In order to improve the voltage and reactive power support capacity in new energy enriched areas,a double-layer voltage and reactive power coordinated control strategy for energy storage power stations combined with new energy is proposed.Firstly,on the minute-level time scale,the voltage and reactive power optimization at the regional level aims is the minimum voltage deviation and network loss,and the improved particle swarm optimization is used to solve the regional optimal voltage distribution.For the second-level adjustment of node voltage fluctuations,the deviation recovery control strategy based on voltage and reactive power sensitivity is adopted.Through the coordination of two time-scale control strategies,the various reactive resources such as energy storage and new energy is used rationally.Secondly,at the power station level,the voltage and reactive power relationship of the energy storage power station is analyzed,and the multi-source coordinated control of the regional regulation command is carried out considering the state of charge of the energy storage.Finally,the effectiveness and practicability of the proposed strategy are verified through the example analysis.

Key words: new energy, energy storage power station, voltage and reactive power, sensitivity, control strategy

CLC Number: