This article proposes a low-voltage ride through control (LVRT) strategy based on reactive current support to address the voltage instability problem in smart sensor photovoltaic grid connected power generation. By preventing overcurrent faults in photovoltaic (PV) and increasing the grid voltage to a certain extent. Restore the voltage of the grid connection point to achieve LVRT. The simulation results show that when the voltage drops by 60%, the voltage at the grid connection point without a control strategy increases by 2 times. After adopting this control strategy, the voltage at the grid connection point increased from 0.314 to around 0.38. When the voltage drops by 30%, the active current is the rated current, and the reactive current increases by 0.45. The voltage at the grid connection point increased from 0.68 to 0.72. Experimental results have shown that this strategy can deliver a certain amount of reactive power to the power grid, causing the voltage at the grid connection point to rise to a certain extent, thereby maintaining the PV station on the grid during power grid faults.
