To use the characteristics of a heating network to compensate for wind power forecast error, a hybrid time-scale dispatch strategy for an electric-heating system is proposed. Considering the differences in time-scale between electric energy and heat energy transmission, a short time-scale regulation model of the heating network is established. In intra-day dispatch, the dispatch model is divided into long (30 minutes) and short (15 minutes) time-scale models to obtain the scheduling scheme of CHP and conventional units, respectively. In real-time dispatch, based on the results of the long time-scale model, CHP units are adjusted on the short time-scale to compensate for the forecast error with energy storage system. The simulation results verify that this model of an electric-heating system reduces the utilization rate of the energy storage system, improves the economy of the electric-heating system, and has a good effect on wind power forecast error compensation. This work is supported by the National Natural Science Foundation of China (No. 62076243).