photovoltaiv power station

The Composition of Solar Power Generation System

Generally speaking, the solar power generation system is composed of solar cells, solar controllers and batteries (groups). If you want the output power of the solar power generation system to be AC 220V or 110V, you also need to configure an inverter. This is the standard configuration of the photovoltaic industry, and it is also the regular work needs of the solar power generation system.

Solar power generation system in a broad sense can be divided into off grid power generation system, grid connected power generation system and distributed power generation system:

Off grid power generation system

Off grid power generation system is a narrow solar power generation system, which is mainly composed of solar cell modules, controllers and batteries. If the output power supply is AC 220V or 110V, it also needs to be equipped with inverters.                  

mini solar panel

Grid connected power generation system

The grid connected power generation system is to directly connect the DC generated by solar modules to the public grid after being converted into AC that meets the requirements of the municipal power grid through the grid connected inverter. The grid connected power generation system has centralized large-scale grid connected power stations, which are generally national power stations. The main feature is that the generated energy is directly transmitted to the power grid, and the power is uniformly allocated by the power grid to supply power to users. This kind of power station has large investment, long construction cycle and large floor area, and has not been developed much. The relatively decentralized small-scale grid connected power generation system, especially the photovoltaic building integrated power generation system, has the advantages of small investment, fast construction, small floor area and strong policy support, and is the mainstream of grid connected power generation.

Distributed generation system

Distributed generation system, also known as distributed power generation or distributed energy supply, refers to the configuration of small photovoltaic power generation and supply system at or near the user site. It generally includes photovoltaic cell modules, photovoltaic array support, DC combiner box, DC distribution cabinet, grid connected inverter, AC distribution cabinet and other equipment, as well as power supply system monitoring devices and environmental monitoring devices. Its operation mode is that under the condition of solar radiation, the solar cell module array of the photovoltaic power generation system converts the solar energy into the output electric energy and sends it to the DC distribution cabinet through the DC combiner box. The grid connected inverter inverts the current to supply the building's own load, and the excess or insufficient power is adjusted by connecting the power grid.                         

roof-mounted solar panel

The above is about the composition of solar power generation system. Keeping following with SOLARPARTS to get more information:

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