Three types of solar power generation systems

The solar power generation system consists of a solar cell pack, a solar controller, and a battery (group). 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. Solar power generation systems are divided into off grid power generation systems, grid connected power generation systems, and distributed power generation systems:

1. The off grid power generation system mainly consists of solar cell components, controllers, and batteries. If the output power supply is AC 220V or 110V, an inverter needs to be configured.

2. Grid connected power generation system refers to the direct current generated by solar modules that is converted into AC power that meets the requirements of the municipal power grid through grid connected inverters and directly connected to the public power grid. The grid connected power generation system has centralized large-scale grid connected power stations, which are generally national level power stations. The main feature is to directly transmit the generated energy to the power grid, and the power is uniformly distributed to users by the power grid. But this type of power station has a large investment, a long construction period, and a large land area, and has not yet developed much. Distributed small-scale grid connected power generation systems, especially photovoltaic building integrated power generation systems, are the mainstream of grid connected power generation due to their advantages such as small investment, fast construction, small footprint, and strong policy support.

3. Distributed power generation system, also known as distributed power generation or distributed energy supply, refers to the configuration of smaller photovoltaic power supply systems at or near the user site to meet the needs of specific users, support the economic operation of existing distribution networks, or meet both requirements simultaneously.

The basic equipment of a distributed photovoltaic power generation system includes photovoltaic cell modules, photovoltaic array brackets, DC combiner boxes, DC distribution cabinets, grid connected inverters, AC distribution cabinets, and other equipment. In addition, there are power supply system monitoring devices and environmental monitoring devices. Its operating 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 output electricity, which is sent to the DC distribution cabinet through the DC combiner box. The grid connected inverter inverts the output electricity to supply the building's own load, and the excess or insufficient electricity is adjusted by connecting to the grid.