Rural Energy System Planning Model And Application Research Under Energy Transition Path

As an important infrastructure for rural areas,rural energy networks complement the development of agriculture,rural areas and farmers,which is an essential guarantee to meet the livelihood of farmers,develop agricultural production and improve the rural environment.China’s rural energy categories are rich,but there are some problems like weak energy supply base,energy consumption structure is not reasonable enough etc.In the context of national strategies such as new urbanization and rural revitalization,it is necessary to accelerate the construction of a modern rural energy system of "clean,electrification and digitalization" to promote the efficient use and high-quality development of rural energy,in order to provide power guarantee for the realization of rural revitalization.Building a modern energy system in rural areas is a necessary way to achieve high-quality development of rural energy,and it is also an essential requirement for implementing the rural revitalization strategy.Based on this,taking the improvement of energy utilization and comprehensive benefits of rural energy system under the transformation of rural energy path as the starting point,the thesis launches research on the planning model and application of rural energy system,the main research contents are as follows.At the beginning,the rural energy differentiated development scenarios under different dimensions are proposed and the mathematical model of rural energy system is described.Considering the dimensions of geographic location,development stage and industrial structure,the potential of rural energy utilization in different regions of China is analyzed according to the rural energy endowment,the rural energy differentiated development scenarios suitable for different regions are proposed.The mathematical model of rural energy system is described according to the statistical characteristics and operational characteristics of various types of basic equipment within the rural energy system.Clarify the different coupling processes of energy in the rural energy system under multi-energy coupling,the thesis propose a multi-level rural energy hub model.which lay a theoretical foundation for the planning and analysis model.At the same time,an analytical model of rural energy system planning considering different energy coupling are constructed.To address the problem of rural biomass energy utilization,a method for planning the power generation capacity of coupled biomass and coal-fired units is proposed with the rural load forecast considering policy factors as the boundary condition.Which can effectively deal with the local rural surplus biomass energy,the economics of coal-fired units in rural areas is improved.Meanwhile,based on the multi-tier energy hub model,a two-tier planning and analysis model for rural energy systems is established that takes into account equipment capacity configuration and operation scheduling optimization,with intelligent algorithms in the upper model to solve problems of configuration level and mixed integer linear algorithms in the lower model to solve problems of optimal operation level,ultimately achieving optimal planning while ensuring optimal system operation after planning.Finally,the model is applied to the typical scenarios of rural energy differentiated development under the energy transition development path.According to the differentiation under the three dimensions of rural energy development,typical rural areas with representative characteristics in energy development in rural areas of China are selected,including the central developed farming type rural areas,the eastern developed industrial development type rural areas,and the western less developed characteristic tourism type rural areas.The actual data are recorded and applied to the proposed planning and analysis model.