Many people have the idea of using solar panels to generate power, but lots of friends still have a vague understanding of solar power generation. So specifically, what kinds of solar power systems are there? 

The on-grid system is composed of photovoltaic cells and on-grid inverters. The energy is directly input into the public grid through the on-grid inverter without battery energy storage. Such as ground power stations, industrial and commercial roofs, etc. The purpose is usually to sell electricity to grid operators for profit. 

The centralized large-scale grid-connected photovoltaic power station refers to the use of large-scale photovoltaic power stations in a centralized manner usually build by the country. The centralized large-scale grid-connected photovoltaic power station is generally a national-level power station. The centralized power station has a larger scale and higher power generation. 

It has the function of automatic operation of two-way switching. First, when the photovoltaic power generation system is insufficient in power generation due to cloudy, rainy days and its own failure, the switcher can automatically switch to the power supply side of the grid, and the power grid supplies power to the load; second, when the power grid suddenly fails for some reason, The photovoltaic system can automatically separate from the power grid, and become the working state of an independent photovoltaic power generation system. Some switching type photovoltaic power generation systems can also disconnect when need, and supply power for the general loads, and connect the power supply to the emergency load. Usually off-grid power generation systems are equipped with energy storage devices.