Abstract:

At present, the research and development of small distributed photovoltaic （PV） power plants is not mature in China. So this paper proposed a centralized design method for small distributed PV generation system. This paper introduced the selection basis of charging controller and inverter, as well as the design formulas of energy storage battery； described the series-parallel design formula of PV module and the selection method of PV cable according to the electrical characteristics of PV modules； deduced the formula of PV array spacing according to the different layout of PV modules, and determined the layout spacing between each row. Finally, the parametric design of the entire power system was achieved based on the above methods and the specific device parameters.

Key words: distributed generation, photovoltaic generation, household small distributed generation, energy storage battery