The utility model discloses a photovoltaic power station system possessing low voltage ride through and anti-island protection functions. The photovoltaic power station system possessing the low voltage ride through and anti-island protection functions comprises a photovoltaic power generation system array, a first breaker, a three-phase inverter, a filter, a parameter detection module, a load, a second breaker, a transformer, a power grid and a controller. A current outputted by the photovoltaic power generation system array passes the first breaker, the three-phase inverter and the filter orderly to be inputted to the input end of the parameter detection module, one output of the parameter detection module is connected with the load, and the other output is connected with the power grid via the transformer and the second breaker. The parameter detection module detects a switch signal of the second breaker and a voltage V and a frequency f at the coupling point of the parameter detection module and the load, and outputs the switch signal, the voltage V and the frequency f to the input end of the controller. One output end of the controller is connected with the inverter to provide a PWM signal to the inverter, and the other output end is connected with the first breaker. The photovoltaic power station system of the utility model enables the low voltage ride through and anti-island protection functions to coexist, thereby realizing the advantage of enhancing the stability and security of the photovoltaic power station system.