The coordinated optimization operation of power system and thermal system is an effective method to improve wind power consumption capacity. Aiming at the different characteristics between heat transfer and power transfer, this paper gives a further research on the impact of the heating network characteristics on wind power consumption capacity. Firstly, combining the heating network hydraulic model and its actual heating network structure and operation characteristic, this paper introduces a functional heating network hydraulic model. Then, based on the establishment of the heating network characteristics equation of delay and attenuation and the heat-electricity coupling model, a heat-electricity combined scheduling model considering the characteristics of the heating network is built. The model not only is convenient to consider the characteristics of delay and attenuation, but also simplifies the calculation of hydraulic model and the constraints of the scheduling model, which is also easy programming at the same time. A numerical example shows that the heating network characteristic can greatly affect the heat-electricity combined optimal scheduling result and wind power consumption capacity, the delay characteristic is conductive for the wind power integration, and the attenuation characteristic goes against the wind power integration. This work is supported by Science and Technology Project “Research and Application of Key Techniques of Combined Thermoelectric Dispatch Considering Safety and Economy” which belongs to State Grid Corporation of China.