In order to promote the application of photovoltaic(PV)in the expressway area,the OpenCV library in the Python programming language was used as a tool,and the route images in the expressway route map were extracted and projected to the light radiation distribution map.The length of the expressway in each radiation area and its proportion were analyzed.The land areas of various types of expressway infrastructures were calculated.The JNMM60 PV module parameters were adopted to calculate the PV power potential in the expressway area.The power demands of expressway operation period and intelligent expressway roadside equipments were compared with the PV power potential,and the PV construction and investment costs were calculated.Analysis results show that the annual average radiation in the expressway area is 1 523.865 kW·h·m-2,and the annual power generation per square meter of PV land is 63.27 kW·h.The land area of the nationwide expressway can reach about 4.9×105 hm2 by the end of 2020 and 6.4 ×105 hm2 by the end of 2025,indicating great PV power potential.Only 75％of the expressway service management area and 10％of the roadside area require the installation of PV equipment to meet all the power demands during the expressway operation period and those of intelligent expressway roadside equipments,and it only takes 4-6 years to recover the construction cost.The large-scale installation of PV equipment in the expressway area still faces difficulties,such as huge initial construction and investment costs,insufficient of PV production capacity and technology,large demand for supporting facilities,unknown interaction between PV infrastructure and road traffic environment,poor space matching between supply and demand,and lack of large-scale PV planning and design management system methods.14 tabs,4 figs,42 refs.
NETL
NSTL
万方数据
