A novel unified power quality conditioner (UPQC)and its control strategy for the fault ride-through operation of photovoltaic (PV)power station is present in this paper.The output voltage of PV station can be controlled to its rated value with the novel compensator under high grid voltage condition.The compensator could also compensate the grid harmonic voltage under various operation conditions, which can minimize the response time of phase-locked-loops embedded in the control loop of grid-tied PV inverter.The compensator helps the PV station output reactive power for enhancing the low voltage ride through performance.Moreover it absorbs reactive power from the grid in high voltage condition to support the grid voltage recovery, which could comprehensively improve the fault ride-through operation of photovoltaic power station.Furthermore, the performance of proposed compensator system with a 100 MW grid-tied PV station has been verified by Matlab/Simulink.