Solar power system consists of solar panel, solar controller, solar battery (group) composition. If the output power is AC 220V or 110V, also need to configure the inverter.
Solar power generation system is divided into off-grid power generation system, grid-connected power generation system and distributed generation system:
1, off-grid power generation system mainly by the solar cell components, controllers, batteries, such as the output power of AC 220V or 110V, also need to configure the inverter.
2, and grid power generation system is generated by the solar module DC power through the grid-connected inverter to meet the requirements of the AC power grid directly after access to the public power grid. Grid-connected power generation systems are centralized and large-scale grid-connected power plants are generally state-level power plants, the main feature is the generation of electricity directly to the grid by the unified deployment of power to the user power supply. However, this power plant investment, construction period is long, covers an area of large, not much development. The decentralized small-scale grid-connected power generation system, especially PV building integrated power generation system, is the mainstream of grid-connected power generation due to the advantages of small investment, fast construction, small footprint and strong policy support.
3, Distributed generation system, also known as distributed generation or distributed energy, refers to the user at the scene or near the site configuration of small photovoltaic power supply system to meet the needs of specific users to support the existing distribution network Economic operation, or both to meet the requirements.
The basic equipment of the distributed photovoltaic power generation system includes PV modules, PV arrays, DC converters, DC power distribution cabinets, grid-connected inverters and AC power distribution cabinets, as well as power supply system monitoring devices and environmental monitoring Device. Its operation mode is in the condition of solar radiation, the solar power module array of solar power system will convert the solar energy into the DC power distribution cabinet, which is converted into the alternating current supply by the grid-connected inverter The building's own load, redundant or insufficient power, is adjusted by connecting the grid.