Abstract: Aiming at the problem of wind curtailment caused by the constraint of determining-power-by-heat of the combined heat and power, a source-load coordinated optimal dispatch method that takes into account the conversion of energy supply and use to promote wind power accommodation is proposed. First, in order to improve the flexibility of energy supply, the source side introduces an air-source heat pump that operates under variable conditions and a power-to-gas with waste heat recovery, and optimizes the power-gas-heat coupling relationship to compress the output space of combined heat and power and improve the system's wind power consumption level. Secondly, the load side analyzes the energy conversion value of electricity, gas, and heat based on the principle of calorific value equivalence, and forms a integrated demand response mechanism including energy conversion under the guidance of multiple types of energy price signals to assist wind power integration and accommodation. Finally, a integrated energy system source-load coordination optimization model that takes into account the user's integrated energy consumption satisfaction is constructed, and the unit output is optimized for each period of time with the goal of minimizing system operating costs. The results of calculation examples show that this method reduces the operating cost of the system while promoting wind power accommodation; the integrated demand response mechanism including conversion of energy use has less impact on user satisfaction and is more in line with the actual energy use of users.