Addressing the full life cycle demands of rail transit power supply system, to deliver core values through ensuring the safety of power supply operation, enhancing equipment maintenance efficiency, and minimizing the life cycle cost, to fully utilize advanced technologies such as measurement, sensing, control, communication, cloud platforms, big data, and artificial intelligence, to characterized by plant-wide digital information modeling, interconnected digital platforms, standardized information sharing, and intelligent application functionality. An eco-friendly, smart, highly reliable, and maintenance-free overall solution is provided.