Public building central air-conditioning system coordination control method considering energy conservation, carbon reduction and user comfort

The invention discloses a public building central air-conditioning system coordination control method giving consideration to energy conservation, carbon reduction and user comfort, which considers the influence of a refined building body structure on building thermal load and fully considers the space-time difference of power system carbon emission intensity. And establishing a heat balance equation of a room to obtain a relationship between the cold load and an indoor temperature set value, and by taking the human body heat comfort PMV and the time-of-use electricity price as constraint conditions for adjusting the tail end cold load demand quantity, optimizing by adopting a weight method to obtain an optimal temperature set value at each moment. And finally, based on the main equipment energy consumption model of the central air-conditioning system and the tail end cold load demand optimization result, establishing a two-stage objective function of overall energy conservation and carbon reduction of the ce