Solar power system is divided into off- grid power generation system, on-grid power generation system and distributed generation system
1. The off-grid power generation system is mainly composed of solar cell module, controller and battery. If the output power supply is AC 220 V or 110 V, the inverter is also required.
2. On-grid power generation system is that the direct current generated by
Solar Modules is directly connected to the public power grid after being converted into AC power conforming to the requirements of municipal power grid through grid connected inverter. The grid connected power generation system has centralized large-scale grid connected power stations, which are generally state-level power stations. The main feature is that the power generated can be directly transmitted to the grid, and the power supply to the users is unified by the power grid. However, this kind of power station has not been greatly developed due to its large investment, long construction period and large floor area. Due to the advantages of small-scale and small-scale grid connected power generation system, small-scale grid connected power generation system has the advantages of small-scale and small-scale grid connected power generation system.
3. Distributed generation system, also known as distributed generation or distributed energy supply, refers to the configuration of small photovoltaic power supply system at or near the user site to meet the needs of specific users, support the economic operation of existing distribution network, or meet the requirements of both.