Reactive Control Strategy for Symmetrical Low Voltage Ride Through of Photovoltaic System Based on RTDS
The active and reactive power decoupling control of photovoltaic system is analyzed in this paper.The DC-DC and DC-AC duel-stage PV inverter model are built on the platform of RTDS real-time simulation system.A new control strategy for PV system low voltage ride through (LVRT) is proposed.In the case of symmetrical grid drop fault,PV system outputs some reactive power to the grid for voltage restore without more reactive power equipment installation.The feasibility and effectiveness of the control strategy is verified by simulation and experiment on the RTDS real-time simulation system platform.