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Reactive Power Control Strategy for Single-Phase Grid-connected PV System

Provided that production and deployment of PV systems continues to grow at extraordinarily fast rate, applicable grids management policy should gradually adjust advice to allow increasingly PV systems to be deployed in the grid. A next-generation PV system, such as what traditional power plants do today, would then perform a much significant role in grid regulation engagement. In certain countries provision of ancillary facilities such as voltage assistance via control of reactive power and Low Voltage Ride-Through (LVRT) combined with injection of reactive current has been in place. Such innovative technologies will be offered by PV systems of the next-generation and will be enhanced throughout the coming years to allow substantially better use through PV systems. Keeping that in mind, this paper presents a Reactive Power Injecting strategy in LVRT operating mode for single-phase PV systems. MATLAB / Simulink software simulates an exact description of the single-phase grid connected PV system. Simulations outcomes show the efficacy and feasibility of proposed strategy along with the control of reactive power throughout LVRT service.