Optimal Scheduling Strategy Of District Integrated Heat And Power System Considering Multiple Energy Stations And Thermal Inertia Of Buildings Under Different Heating Regulation Modes

With the rapid development of low-carbon multi-energy supply solutions such as Combined Heat and Power(CHP),heat pumps(HP)and so forth,different energy systems are highly coupled.Therefore,the electricity and heat network have been studied as an integrated whole,named the district integrated heat and power system(DIHPS).Towards the development and promotion of the DIHPS,how to realize its economic operation and solve the problem of wind power integration caused by the strong interdependence of electricity and thermal energy generation of CHP are two main challenges.Utilizing the coordination of multiple energy stations and the thermal inertia of buildings are considered as efficient methods to deal with these challenges above.However,to truly take advantage of these,many factors such as the energy price,the variable efficiency of devices,and especially the different heating regulation modes(the quantity regulation and the quality regulation mode)are imperative to be considered for variable situations of the practical project.Therefore,an optimal scheduling method considering different energy stations and thermal inertia of buildings under different heating regulation modes is proposed to guide the operation of the DIHPS for the sake of operational economics and wind power utilization.Main work of the thesis is as follows:(1)In this paper,an integrated hydraulic-thermal model of the district heating network under the quantity regulation mode is introduced,and a novel thermal energy flow model with transmission time delay under the quality regulation mode is firstly proposed to simulate the dynamic thermal energy distribution of the district heating network with multiple heat sources(2)Buildings are regarded as the virtual thermal storage system,the capacity of which for wind power integration is distinguished resulted from the different aggregation characteristic in terms of different heating regulation modes.(3)Considering the increasing penetration of distributed renewable energy power generation,an optimal scheduling method considering different energy stations and thermal inertia of buildings under different heating regulation modes with the constraints from the unbalanced three-phase electric distribution network,energy stations and the district heating network,is proposed and the influence on wind power utilization is studied.