Due to its advantages of safety, flexibility and ease of integration, photovoltaic power generation can make full use of a large number of own space resources in the existing road and railway transportation systems. Through the integrated application of photovoltaic roads and photovoltaic railways, it can be used without additional land resources. Provide clean power for the transportation system and realize energy saving and emission reduction of road and railway transportation systems. Therefore, this paper assesses the potential of developing photovoltaic power generation in chinese road and railway transportation, proposes technical indicators for the self-consistent power consumption rate of the transportation system, and looks forward to the future development prospects of photovoltaic roads and photovoltaic railways in China.
The total potential for development and utilization of photovoltaic power generation contained in highways in China is 1022.8 TWh. In the highway transportation network, self-owned spaces such as road occupation, road shoulders, ramps, service area building ceilings, bridge and tunnel isolation belts can provide space resources for the integration of photovoltaic power generation, and bridge and tunnel lighting and ventilation facilities, and electricity consumption in service areas The facility can also provide sufficient consumption space for photovoltaic power generation and improve the consumption level of photovoltaic power generation.
The potential of photovoltaic power generation contained in highways in China
The total potential of photovoltaic power generation in chinese railway network for development and utilization is 239.6 TWh. In the railway transportation network, the self-owned space along the railway, the large station canopy, and the roof of the rolling stock can provide space resources for the integration of photovoltaic power generation, and the electricity consumption of electrified railways and site service facilities can also provide broad consumption for photovoltaic power generation space.
The potential of photovoltaic power generation in chinese railways
Make full use of the free space resources of highways and railways, and develop and construct photovoltaic power generation systems, which can not only provide clean power supply for highways and railways, but also reduce the dependence of the transportation system on the external power grid, and supply and distribute the transportation energy system. Integration provides an important way.
Photovoltaic highway integration application scenarios
In order to evaluate the application potential of photovoltaic power generation in highways and railway systems in China in the future, this paper proposes a technical index of the self-consistent rate of electricity consumption in the transportation system to characterize the independent energy supply capacity of the transportation system. It is estimated that by 2030, the annual power consumption of highways and railways in China will increase to 82.6 TWh and 191.9 TWh. For photovoltaic highway application scenarios, under the conditions of highway photovoltaic utilization rates of 1%, 3%, and 5%, the annual electricity self-consistent rate of the highway transportation system can reach 12.4%, 37.2%, and 61.9%, and the annual carbon dioxide reduction The displacement will exceed 10,000 tons; and for photovoltaic railway application scenarios, under the conditions of 5%, 10%, and 15% of railway transportation photovoltaic, the self-consistent rate of railway transportation system's annual electricity consumption will reach 6.2%, 12.5%, and 18.7% , The annual carbon dioxide emission reduction will exceed 12,000 tons.
Prospects for the integrated development of photovoltaic and highway
The integration of photovoltaic power generation with highway and railway transportation systems can not only make full use of the transportation system's own space to provide clean electricity for the transportation system, reduce the outsourcing of the transportation system, but also reduce the carbon emissions of the transportation system and promote the transportation system. It is expected that this research will provide policy recommendations for optimizing the transportation energy structure, promoting the application of clean energy, and completing the 2060 carbon neutral goal.
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