Photovoltaic power generation classification
Photovoltaic power generation is divided into off-grid power generation systems and grid-connected power generation systems:
1. Off-grid power generation system. It is mainly composed of a solar cell module, a controller, and a battery. To supply power to an AC load, an AC inverter needs to be configured.
2. The grid-connected power generation system is that the direct current generated by the solar modules 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 power grid. The grid-connected power generation system has centralized large-scale grid-connected power stations, which are generally state-level power stations. The main feature is that the power generation can be directly delivered to the power grid, and the power grid can be uniformly deployed to supply power to users. However, this kind of power station has a large investment, a long construction period and a large area. It has not yet developed much. The decentralized small-scale 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 floor space and large policy support.
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