Solar power generation systems are divided into off-grid solar power generation systems, grid-connected solar power generation systems and distributed solar power generation systems
1、The off-grid solar power generation system is mainly composed of solar cell components, controllers, and batteries. If the output power is AC 220V or 110V, an inverter is also required.
2、The grid-connected solar power generation system is that the direct current generated by the solar modules is converted into alternating current that meets the requirements of the mains grid through the grid-connected inverter, and then directly connected to the public grid. The grid-connected power generation system has centralized large-scale grid-connected power stations, which are generally national-level power stations. However, this kind of power station has not developed much due to its large investment, long construction period and large area. The decentralized small grid-connected power generation system, especially the photovoltaic building-integrated power generation system, is the mainstream of grid-connected power generation due to its advantages of small investment, fast construction, small footprint, and strong policy support.
3、Distributed solar power generation system, also known as distributed photovoltaic power generation system, refers to the configuration of smaller photovoltaic power generation systems at the user site or close to the power site to meet the needs of specific users, support the economic operation of the existing distribution network, or Meet both requirements at the same time.
The basic equipment of the distributed solar power generation system includes photovoltaic cell components, photovoltaic square array supports, DC combiner boxes, DC power distribution cabinets, grid-connected inverters, AC power distribution cabinets and other equipment, as well as power generation system monitoring devices and environmental monitoring devices. device. Its operation mode is that under the condition of solar radiation, the solar cell module array of the photovoltaic power generation system converts the output electric energy from solar energy, and sends it to the DC power distribution cabinet through the DC combiner box, and the grid-connected inverter converts it into AC power supply. The building itself is loaded, and excess or insufficient electricity is regulated by connecting to the grid.
Post time: Dec-30-2022