Grid-connected photovoltaic simulation generating system based on DIgSILENT (Digital Simulation and Electrical NeTwork)

The invention discloses a grid-connected photovoltaic simulation generating system based on a DIgSILENT (Digital Simulation and Electrical NeTwork). The grid-connected photovoltaic simulation generating system comprises a photovoltaic battery, wherein the photovoltaic battery is connected into a power grid after passing through a direct current inductor, a Boost circuit, an inverter circuit and a main transformer sequentially; a bypass chopper circuit is connected to a connecting joint between the Boost circuit and the inverter circuit and used for realizing low-voltage ride through; a filter capacitor is connected to a joint between the photovoltaic battery and the direct current inductor and used for absorbing ripple waves caused by the switch-on and switch-off of the Boost circuit; and a direct current capacitor is connected to a connecting joint between the Boost circuit and the inverter circuit and used for buffering a power difference between the Boost circuit and an inverter. The grid-connected photovoltaic simulation generating system disclosed by the invention is closer to the actual situations of a photovoltaic generating system on a main circuit structure and a control system, can be applied to the operation analysis of various types of power systems, and provides a detailed and accurate proof for researching the influences of photovoltaic generation on the power systems.