| The energy industry,as a pillar industry of national economic and social development,its efficient,green and clean energy supply requirements have become a necessary prerequisite for the development of national energy system in the current situation.However,with different proportions of large-scale wind power,photovoltaic and other renewable energy generation connected to the large grid,the coordination ability between different forms of energy in different forms of energy in the regional multi-energy system at the present stage is weakened.At the same time,the fluctuation of renewable energy output and some uncertain operating factors also affect the operation and scheduling of regional multi-energy system to a certain extent.Therefore,based on the regional multi-energy system model of electricity,gas,heat and cold,this paper multiple regional multi-energy systems are interconnected through the physical connection of electricity,gas and heat to form a multi-regional large-scale and complex multi-energy system cluster in the paper,giving full play to the demand-side response adjustment ability of each regional multi-energy system,and providing guarantee for improving the operation economy and overall demand-side response ability of the interconnected system of multi-regional energy clusters.The specific research contents of this paper are as follows:(1)The frist research is multi-regional energy cluster interconnection system model.Firstly,the regional multi-energy system energy supply model is established through the analysis and research on the conversion characteristics of different forms of energy between different energy equipment in the regional multi-energy system and the four energy supply characteristics of the system,electricity,gas,heat,and cold.Then,the linear energy conversion matrix is used to analyze the input-output relationship of the internal energy flow of the multi-regional energy cluster interconnected system formed by the interconnection of multi-regional multi-energy systems.Based on the topological structure and model of the multi-energy system with electricity,gas,heat and cold regions,the energy conversion coordination model of the multi-regional energy cluster interconnected system is established,which lays a foundation for the study of the demand side response mechanism of the multi-regional energy cluster interconnected system and the optimization scheduling strategy of the multi-regional energy cluster interconnected system under the demand side response.(2)The second research is demand side response analysis of multi-regional energy cluster interconnection system.In order to better realize the optimal scheduling of multi-regional multi-energy system clusters,the demand side response mechanism of cluster interconnected system is studied and analyzed based on the multi-regional energy cluster interconnected system model.Firstly,based on the traditional demand response model,the concept of virtual demand side response is proposed,and the virtual demand side response model based on multi-regional energy cluster interconnection system is established from three aspects: energy interaction,system optimization operation and user multi-energy load response adjustment.Then,the uncertainty factors affecting the virtual demand side response of multi-regional energy cluster interconnected system are analyzed.The virtual demand side response model of multi-regional energy cluster interconnected system considering uncertainty is established.Finally,the virtual demand-side response optimization model based on cluster interconnection system is established,and the simulation operation scenario is established to analyze and verify the multi-regional energy cluster interconnection system under demand-side response to realize multi-energy complementarity of regional multi-energy systems and improve the coordinated scheduling ability of different energy sources among multi-regional multi-energy systems.(3)The last research is optimal scheduling strategy of regional multi-energy interconnection system considering demand side response.In order to realize the optimal scheduling of multi-regional energy cluster interconnected system with wind power,photovoltaic and other renewable energy,a scheduling strategy of multi-regional energy cluster interconnected system considering demand side response is proposed.By analyzing the optimal scheduling process of cluster interconnected system under demand side response,an optimization model of multi-regional energy cluster interconnected system scheduling strategy is established,which takes the minimum daily total operating cost,the optimal carbon emission and the minimum output correction of energy conversion equipment as the objective functions.Through simulation analysis,it is verified that the proposed optimal scheduling strategy of multi-regional energy cluster interconnection system can achieve the optimal energy scheduling of multi-regional multi-energy system under the goal of minimizing the cost and optimizing carbon emissions. |
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