Abstract: The carbon capture unit and wind turbine whose output is intermittent and fluctuating were aggregated into a virtual power plant（VPP） which is optimized internally and collaboratively,and to participate in power dispatch as a whole.In order to describe the capture process of solvent-storaged carbon capture unit more accurately,the amount of CO2 dealing in carbon capture system was modified into the amount of CO2 respectively dealing by stripper and absorber,namely the traditional single carbon be modified into an innovative double carbon,then the double carbon model can be taken as a new unit constraints.To maximize the net profit of the VPP in the electricity market and the carbon trading market,the day-ahead and real-time double-stage low-carbon economic dispatch model was constructed.The day-ahead scheduling results were taken as the declaratory output of the VPP.Under real-time scheduling stage,the net output power of the carbon capture unit was amended real-timely,along with contributions of the energy storage battery,to overcome the problem that the actual output of the VPP deviates from its declared value.Simulation results show that the double carbon model is reasonable and correct.The VPP under joint operation mode can optimize the output arrangement and carbon emission level of its internal units coordinately,so the wind power can become a schedulable resource,resulting in higher operational benefits; Compared with the independent operation mode,the required capacity configuration of the energy storage battery to equilibrate output deviation can be reduced,and the carbon emission reduction benefit and economic benefit can both be more higher.Compared with the traditional single carbon model under the same conditions,when the improved double carbon model is adopted for carbon capture unit,energy storage battery can be reduced,and the VPP is more economical and low-carbon.