Topological structure of photovoltaic power generation system based on DC photovoltaic module

The invention relates to a topological structure of a photovoltaic power generation system based on a DC photovoltaic module, and belongs to the technical field of photovoltaic power generation. The topological structure comprises the DC photovoltaic module, a GPRS (General Packet Radio Service) module, a DC bus, an inverter, an energy storage device, an energy storage device converter, an AC bus, a two-way ammeter and an AC load. The DC photovoltaic module is connected with the DC bus and the GPRS module; the GPRS module is wirelessly communicated with an upper computer; one end of the energy storage device converter is connected with the DC bus, and the other end of the energy storage device converter is connected with the energy storage device; one end of the inverter is connected with the DC bus, and the other end of the inverter is connected with the AC bus; one end of the two-way ammeter is connected with the AC bus, and the other end is connected with a grid. According to the topological structure, hot spot effects formed by shadow and the like are thoroughly avoided, the generating efficiency of a photovoltaic system is maximized in any lighting condition, the structure is simple and construction is easy, so that the topological structure is especially applied to distributed photovoltaic power stations.