Decarbonization-Oriented Rail Transportation and Renewable Energy Integration Development—Configurations, Solutions, and Enabling/Empowering Technologies
Chen Chong1, Jia Limin1,2, Zhao Tianyu3, Jin Chengri3, Wu Mingli2
1. China Institute of Energy and Transportation Integrated Development,North China Electric Power University Beijing 102206 China;
2. Beijing Jiaotong University School of Electrical Engineering Beijing 100044 China;
3. Beijing Nego Automation Technology Co. Ltd Beijing 100044 China
This paper takes the decarbonization of energy supply in the rail transportation as its orientation,and explores a technology path and systemic scenario of the energy supply decarbonization in which the energy demand of rail transportation is harmonized with the resource endowment of the renewable energy. Thus, a green, flexible, self-contained and sustainable energy system of the rail transportation is built. Further, this paper points out the direction and provides reference for energy reform in the rail transportation field.
This paper sums up the existing traction power supply mode of rail transportation, existing technical problems, main research directions and typical cases of renewable energy application in the first place. Further, this paper concludes 14 integration scenarios and solutions for rail transportation and renewable energy according to the coordinated evolution mode of rail transit type, power grid strength and new energy implantation type, puts forward 4 integrated modes for rail transportation and renewable energy from the two perspectives that rail transit and new energy are dominant respectively, and outlines the vision for rail transportation and renewable energy integration while " source-grid-load-storage " can coordinate with each other by the principle of making adjustments at any time according to the grid, land and load. Moreover, the technical architectures adapting for typical scenarios of urban rail transit and electrified section of trunk railway and non-electrified section of trunk railway is constructed, boundary conditions and components matching principles, as well as the core concept and design philosophy for collaborative control of each component are proposed under strong, weak or no network. The core idea of system energy dispatching and control strategy and the energy interaction between “wind-solar-storage-network” under 3 modes of no-load energy storage, traction power supply and braking feedback energy are clarified, and a hierarchical vertical management and control architecture with complete and clear logical hierarchy are built. In the end, this paper describes novel information communication, power transformation and control, new energy traction grid group control, advanced energy storage, wide area protection and self-healing, energy self-contained dispatching and other enabling/enabling technologies driving the integrated development of rail transportation and renewable energy.
It is necessary to regard the integrated development of rail transportation and renewable energy as the core path for trans-energy structural transformation, energy security and achieving carbon peaking and carbon neutrality goals under decarbonization. The tight integration and collaborative innovation of these two sectors will significantly improve the multi- interdisciplinary development and technology collaboration, thus a new generation of theories, forms, modes, technologies, equipment and industries that enhance scientific value, social benefits, economic benefits and ecological benefits. It is of strategic importance for the new scenario of human socio-economic development and the sustainable formation of a new civilization.
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