Abstract: The problem of wind power accommodation has always been a hot topic in the field of energy. In order to solve this problem,the mechanism of thermal storage electric boiler cooperating with cogeneration unit is analyzed from the point of view of spatial coupling.The time delay of the heating system is analyzed from the time coupling perspective. The influence of scheduling makes the thermal inertia time scale match the electrical scheduling time scale. Based on the thermoelectric coupling characteristics,in this paper,the time matching relationship between electricity and heat system is clarified,and a day-ahead optimal scheduling model considering the heat storage characteristics of heating buildings is established,which is used to solve the problem of wind power accommodation. The model is transformed into mixed integer linear programming（MILP）problem and solved by Matlab OPTI toolbox. The results show that the abandoned wind can be effectively eliminated,the system realizes the economic operation,and verifies the feasibility of the dayahead scheduling.