Three common power generation systems in the photovoltaic power generation market

Distributed photovoltaic power generation is also called decentralized power generation distributed power supply. Its characteristic is to configure a smaller photovoltaic power supply system at the user site close to the power site to meet the needs of specific users support the economics of the existing power distribution network. Run, meet the requirements of these two aspects at the same time.

　　 1. An independent photovoltaic power generation system is mainly composed of solar cell components, a controller, a storage battery. To supply power to the AC load, an AC inverter is also required. Independent photovoltaic power plants include power supply systems for villages in remote areas, solar household power systems, communication signal power supplies, cathodic protection, solar street lights, other photovoltaic power generation systems with batteries that can operate independently.

2. Grid-connected photovoltaic power generation. 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 grid by the grid-connected inverter then directly connected to the public grid. It is divided into batteries with without batteries. Grid-connected power generation system, the grid-connected power generation system with storage battery is dispatchable, can be merged into out of the grid as needed, has the function of backup power supply, which can provide emergency power when the grid is out of power. Photovoltaic grid-connected power generation systems with batteries are often installed in residential buildings; grid-connected power generation systems without batteries do have the functions of dispatchability backup power, are generally installed on larger systems.

　　3. The main components are photovoltaic cell modules, photovoltaic square array brackets, DC combiner boxes, DC power distribution cabinets, grid-connected inverters, AC power distribution cabinets other equipment, as well as power supply system monitoring devices environmental monitoring devices. 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 the solar energy, sends it to the DC distribution cabinet through the DC combiner box, is inverted by the grid-connected inverter into AC power supply. The building's own load, surplus insufficient power is adjusted by connecting to the grid.