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 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 power generation system is that the direct current generated by the solar module is converted into the 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 power generation system, also known as distributed power generation or distributed energy supply, refers to the configuration of a smaller photovoltaic power supply system at the user site or near the power site to meet the needs of specific users and support the existing distribution network. economic operation, or both.
The basic equipment of the distributed photovoltaic 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 supply 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.
Application field
1. User solar power supply: (1) Small power supply ranging from 10-100W, used in remote areas without electricity such as plateaus, islands, pastoral areas, border posts and other military and civilian life electricity, such as lighting, TV, tape recorders, etc.; (2) 3 -5KW roof grid-connected power generation system for households; (3) Photovoltaic water pump: solve the drinking and irrigation of deep wells in areas without electricity.
2. Traffic field such as beacon lights, traffic/railway signal lights, traffic warning/signal lights, Yuxiang street lights, high-altitude obstacle lights, highway/railway wireless phone booths, power supply for unattended road classes, etc.
3. Communication/communication field: solar unattended microwave relay station, optical cable maintenance station, broadcasting/communication/paging power supply system; rural carrier telephone photovoltaic system, small communication machine, GPS power supply for soldiers, etc.
4. Petroleum, marine and meteorological fields: cathodic protection solar power supply system for oil pipelines and reservoir gates, life and emergency power supply for oil drilling platforms, marine detection equipment, meteorological/hydrological observation equipment, etc.
5. Power supply for household lamps: such as garden lamps, street lamps, portable lamps, camping lamps, mountaineering lamps, fishing lamps, black light lamps, tapping lamps, energy-saving lamps, etc.
6. Photovoltaic power station: 10KW-50MW independent photovoltaic power station, wind-solar (diesel) complementary power station, various large-scale parking plant charging stations, etc.
7. Solar buildings Combining solar power generation with building materials will enable large buildings in the future to achieve self-sufficiency in electricity, which is a major development direction in the future.
8. Other fields include: (1) Matching with automobiles: solar vehicles/electric vehicles, battery charging equipment, automobile air conditioners, ventilation fans, cold drink boxes, etc.; (2) regenerative power generation systems for solar hydrogen production and fuel cells; (3) seawater Desalination equipment power supply; (4) Satellites, spacecraft, space solar power stations, etc.
Post time: May-06-2023