Given the background of energy internet and low-carbon electricity

the integrated energy system has become an important carrier of energy conservation and emission reduction. Based on the energy hub concept

this paper develops an integrated energy system model combining electricity

heat and gas with power to gas and gas turbine. The carbon trading mechanism is introduced into the dispatching model to construct a ladder-type cost calculation model for carbon trading according to different intervals of carbon emission. A low-carbon economic dispatching model for an integrated electricity-heat-gas energy system is established which considers carbon trading cost and energy cost. Dispatching results of three models are compared and analyzed to show that the proposed model is effective in balancing low carbon and economy. Finally

the effect of carbon trading price and coupling component capacity on dispatching results is analyzed.