The invention relates to the technical field of 
simulation systems of 
new energy grid-connected power generation, in particular to a photovoltaic grid-connected power generation semi-real object 
simulation system; the photovoltaic grid-connected power generation semi-physical 
simulation system comprises a simulation 
program integration execution platform, a simulation 
machine, a real object part,a 
signal acquisition 
system of the real object part and a simulation photovoltaic power supply, wherein the simulation 
program integration execution platform is used for executing a program and transmitting a 
signal to the simulation 
machine and the 
signal is converted into an electrical signal for running the real object part through the simulation 
machine; the simulation photovoltaic power supply is used for providing a grid-connected required 
energy source for the real object part; and the 
signal acquisition system is used for collecting the electrical signals of the real object part and feeding the electrical signals to the simulation 
program integration execution platform. According to the system, the cost of a 
new energy power generation photovoltaic array and an 
electricity storagesystem thereof can be reduced, and the performance of a 
new energy grid-connected system can be integrally mastered. According to the system, the problem of 
instability caused by inaccurate tracking of the maximum power point of the new energy power generation is fundamentally solved, and the phenomenon of energy waste caused by oversaturation of the photovoltaic array under the actual working state is avoided.