Supply Systems for High-Speed Railways focuses on the latest research into smart traction power supply systems. Starting from the concept of smart technologies, the book describes the structure and functions of smart traction power supply systems, including smart power supply and transformation facilities, smart power supply operation and maintenance management systems, smart power supply dispatching systems, and high-speed communication networks. It covers both theory and the implementation methods and case studies of wide area protection, self-healing reconstruction, fault prognostics, health assessment, and power supply dispatching.