With the continuous increase of grid connection scale of renewable energy sources such as wind power and photovoltaic, the peak shaving pressure of the power system is gradually increasing. Carbon capture power plants can not only reduce the system's carbon emissions, but also alleviate the peak shaving pressure of the system, and are widely used in the power system. In this context, an integrated flexible operation carbon capture power plant was introduced to mobilize flexible response resources on the supply side, and the characteristics of its integrated flexible operation mode were analyzed in depth. At the same time, demand response was considered to fully mobilize demand side flexible resources. On this basis, a virtual low carbon economic dispatch model for power plants was established that considered both supply and demand responses and integrated flexible operation carbon capture. Based on Matlab, the YALMIP toolbox and GUROBI solver was called to simulate and verify the model. The calculation example shows that the proposed model can further reduce the "waste of solar energy and wind energy" and carbon emissions, alleviate peak shaving pressure, and provide reference for low carbon economic dispatch of power systems.