Solar power generation is divided into photothermal power generation and photovoltaic power generation. Generally speaking, solar power generation refers to solar photovoltaic power generation, referred to as "photovoltaic". Photovoltaic power generation is a technology that directly converts light energy into electric energy by using photovoltaic effect of semiconductor interface. The key part of this technology is solar cells. After the solar cells are connected in series, they can be packaged and protected to form a large-area solar cell module, and then form a photovoltaic power generation device with power controllers and other components.
Photovoltaic power generation system is divided into independent photovoltaic system and grid-connected photovoltaic system.
Independent photovoltaic power stations include village power supply system, solar household power supply system, communication signal power supply, cathodic protection, solar street lamps and other photovoltaic power generation systems with batteries that can operate independently.
Grid-connected photovoltaic power generation system is a photovoltaic power generation system connected to the power grid and transmitting electric energy to the power grid. It can be divided into grid-connected power generation systems with and without batteries. Grid-connected power generation system with storage battery is schedulable, can be integrated into or withdrawn from the power grid as required, and also has the function of standby power supply, which can provide emergency power supply when the power grid fails for some reason.