Solar power generation is divided into solar thermal power generation and photovoltaic power generation. Generally speaking, solar power generation refers to solar photovoltaic power generation. Photovoltaic power generation is a technology that uses the photovoltaic effect of the semiconductor interface to directly convert light energy into electrical energy.
Photovoltaic power generation system refers to a power generation system that directly converts light energy into electrical energy without a thermal process. Photovoltaic power generation systems are usually composed of photovoltaic arrays, battery packs, battery controllers, inverters, AC power distribution cabinets, and solar tracking control systems. Its main components are solar cells, batteries, controllers and inverters. It is characterized by high reliability, long service life, no environmental pollution, independent power generation and grid-connected operation.
Currently, photovoltaic power generation systems are divided into independent photovoltaic power generation systems, grid-connected photovoltaic power generation systems and distributed photovoltaic power generation systems.
1. Independent photovoltaic power generation system
Independent photovoltaic power generation is also called off-grid photovoltaic power generation. Mainly composed of solar cell components, controllers, and storage batteries. If you want to supply power to AC loads, you also need to configure AC inverters. Independent photovoltaic power stations include village power supply systems in remote areas, solar household power systems, communication signal power supplies, and cathodic protection. , Solar street lights and other photovoltaic power generation systems with batteries that can operate independently.
2. Grid-connected photovoltaic power generation system
Grid-connected photovoltaic power generation means that the direct current generated by solar modules is converted into alternating current that meets the requirements of the mains power grid by a grid-connected inverter and then directly connected to the public grid. It can be divided into grid-connected photovoltaic power generation systems with storage batteries and grid-connected photovoltaic power generation systems without storage batteries. The grid-connected photovoltaic power generation systems with storage batteries are schedulable and can be merged into or out of the grid as needed, and they also have backup power sources. Function, when the power grid is out of power for emergency power supply; photovoltaic grid-connected power generation systems with storage batteries are often installed in residential buildings; grid-connected photovoltaic power generation systems without storage batteries do not have the function of dispatchability and backup power, and are generally installed in On larger systems.
3. Distributed photovoltaic power generation system
Distributed photovoltaic power generation systems can be divided into centralized large-scale grid-connected photovoltaic power plants and distributed photovoltaic systems. The main feature of the centralized large-scale grid-connected photovoltaic power station is that the power generated can be directly transmitted to the grid, and the grid can be uniformly deployed to supply power to users. This kind of power station has a large investment, a long construction period, and a large area. The distributed photovoltaic system has the advantages of small investment, fast construction, small footprint, and large policy support.
Solar power generation is divided into solar thermal power generation and photovoltaic power generation. Generally speaking, solar power generation refers to solar photovoltaic power generation. Photovoltaic power generation is a technology that uses the photovoltaic effect of the semiconductor interface to directly convert light energy into electrical energy.
Photovoltaic power generation system refers to a power generation system that directly converts light energy into electrical energy without a thermal process. Photovoltaic power generation systems are usually composed of photovoltaic arrays, battery packs, battery controllers, inverters, AC power distribution cabinets, and solar tracking control systems. Its main components are solar cells, batteries, controllers and inverters. It is characterized by high reliability, long service life, no environmental pollution, independent power generation and grid-connected operation.
Currently, photovoltaic power generation systems are divided into independent photovoltaic power generation systems, grid-connected photovoltaic power generation systems and distributed photovoltaic power generation systems.
1. Independent photovoltaic power generation system
Independent photovoltaic power generation is also called off-grid photovoltaic power generation. Mainly composed of solar cell components, controllers, and storage batteries. If you want to supply power to AC loads, you also need to configure AC inverters. Independent photovoltaic power stations include village power supply systems in remote areas, solar household power systems, communication signal power supplies, and cathodic protection. , Solar street lights and other photovoltaic power generation systems with batteries that can operate independently.
2. Grid-connected photovoltaic power generation system
Grid-connected photovoltaic power generation means that the direct current generated by solar modules is converted into alternating current that meets the requirements of the mains power grid by a grid-connected inverter and then directly connected to the public grid. It can be divided into grid-connected photovoltaic power generation systems with storage batteries and grid-connected photovoltaic power generation systems without storage batteries. The grid-connected photovoltaic power generation systems with storage batteries are schedulable and can be merged into or out of the grid as needed, and they also have backup power sources. Function, when the power grid is out of power for emergency power supply; photovoltaic grid-connected power generation systems with storage batteries are often installed in residential buildings; grid-connected photovoltaic power generation systems without storage batteries do not have the function of dispatchability and backup power, and are generally installed in On larger systems.
3. Distributed photovoltaic power generation system
Distributed photovoltaic power generation systems can be divided into centralized large-scale grid-connected photovoltaic power plants and distributed photovoltaic systems. The main feature of the centralized large-scale grid-connected photovoltaic power station is that the power generated can be directly transmitted to the grid, and the grid can be uniformly deployed to supply power to users. This kind of power station has a large investment, a long construction period, and a large area. The distributed photovoltaic system has the advantages of small investment, fast construction, small footprint, and large policy support.