The influence of grid-connected photovoltaic (PV) systems from the different types of load

The rapid growth and expansion of grid-connected photovoltaic (PV) systems utilization is significantly beneficial to the mitigation of environmental issues. This paper mainly discusses the comparison of operating parameters of grid-connected PV systems used in the four types of load and analyzes operating parameters. The characters of PV system used in power system for four types of load, concluding load of pure resistor, load of pure inductor, load of resistor-inductor load and load of electromotor used in 2P air-conditioning are compared and analyzed. The effects to PV system in different types of load are discussed. And methods of protection against overload, impulse current are put forward.