Configuration Methods For Wind And Solar Power Supply Facilities In Highway Service Areas

The replacement of traditional grid electricity by clean energy is an important means to achieve carbon reduction in the transportation sector.Highway service areas have excellent spatial utilization conditions for wind and solar energy resources,but currently,the vast majority of highway service areas rely on grid power supply,resulting in insufficient utilization of wind and solar energy.Moreover,the configuration of wind and solar power supply facilities in a small number of wind and solar service areas is relatively subjective.According to the location conditions of the service area,functional characteristics and small regional wind and solar energy resource endowment,scientific selection of distributed wind and solar energy power supply mode,proposed highway service area wind and solar energy power supply facilities configuration method,for the improvement of highway land within the scope of wind and solar energy application technology and standards is of great significance.The paper first investigates and analyzes the characteristics of the electricity load of several domestic highway service areas of different grades and climatic conditions,and constructs an e-Quest model to characterize the hour-by-hour electricity consumption distribution of service areas throughout the year based on the key influencing factors of service area energy consumption.Secondly,the ERA5 global meteorological reanalysis database,which has excellent temporal and spatial resolution and accuracy,is selected as the meteorological data source;considering the richness,stability,and complementarity of regional wind and solar resources,an indicator system for the combined utilization of wind and solar resources is constructed,and the fuzzy comprehensive evaluation method is used to evaluate the level and applicability of the combined utilization of regional wind and solar resources.Thirdly,considering the meteorological data requirements of independent and grid connected wind and solar power supply systems,the generation methods of their meteorological design parameters are proposed respectively.At the same time,considering the topographic conditions of the service area/the shading effect of buildings on wind and solar energy in a small area,based on regional meteorological design parameter data,WindSim wind farm simulation technology,SketchUp 3D modeling and PVsyst photovoltaic power generation simulation technology are used to predict the full-year power generation distribution of wind and solar power supply facilities of unit capacity.Then,the applicability of stand-alone and gridconnected power supply modes in highway service areas with different electrical loads and geographical locations is proposed,considering the construction costs of various wind and solar power supply modes.Taking the whole life cycle input cost of independent wind and solar power supply system as the objective function,and taking the time-by-time power balance,battery capacity and state of charge and the minimum capacity of wind turbine and PV module as the constraints of independent wind and solar power supply system configuration;Taking the life-cycle investment cost of grid-connected wind and solar power supply systems and the power supply rate of wind and solar energy as the objective function,and taking hourly power balance as the constraint condition for the configuration of grid-connected wind and solar power supply systems.Then the optimal configuration models of independent and grid-connected wind and solar power supply facilities are constructed respectively,and the Grey Wolf optimization algorithm is selected to solve the models to determine the configuration scheme.Finally,taking the Yantan service area as the object,based on the power consumption scale,geographical location,and other conditions,select grid connected wind and solar power supply modes,and complete the configuration plan and carbon reduction effect evaluation of wind and solar power supply facilities in the Yantan service area based on the power consumption load of the service area and regional wind and solar characteristics.Based on the dynamic changes of electricity demand,meteorological design parameters,input costs of wind and solar power systems and energy saving and carbon reduction benefits,this study proposes a method for the configuration of wind and solar power facilities in service areas to achieve efficient utilization of wind and solar energy in road areas,which is important for reducing the operating costs and life-cycle carbon emissions in service areas,supporting the scientific application of wind and solar energy in transportation infrastructure and achieving the goal of "carbon peaking and carbon neutral" in transportation.