Through establishing the equivalent circuit diagram of the PV power station,the variation of the active power which exerts the influence on the voltage of the grid is analyzed.According to the technical requirements of GB/T 29321-2012 for reactive power compensation,a coordinated control strategy is proposed to ensure the safe and stable operation of the power grid,and the minimum line loss and the grid capacity limitation are taken into account at the same time.Based on the Simulink platform,the simulation model of the PV power station is established,and the validity of the voltage stability analysis and the effectiveness of coordinated control are verified.%通过建立光伏电站的等效电路图,分析了其有功出力变化对并网点电压造成的影响.根据GB/T29321-2012对无功补偿的技术要求,提出了在优先保证电网安全稳定运行的前提下,同时考虑满足线损最小及容量限制等要求的协调控制策略.并基于Simulink的软件平台,搭建了光伏电站的仿真模型,验证了并网点电压稳定性分析的正确性和协调控制策略的有效性.
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