Independent photovoltaic power station is also known as isolated photovoltaic power station. In the power-free villages, towns and islands with good lighting conditions and relatively large load demand, it is suitable to establish independent photovoltaic power station in the power-free Han area with relatively concentrated users within a few kilometers. 2. At present, the capacity of independent photovoltaic power station ranges from thousands of watts to tens of kilowatts. The power station is composed of photovoltaic panel array, storage battery and converter, energy regulator, power distribution and transmission system. The power generation system completes the charging of the battery from day to day. At the same time, it supplies power to the photovoltaic water pump and processing machine for pumping, water storage and processing. At night, it completes the inverter discharge control of the battery to realize the power supply to the load. When designing an independent power statio