The intelligent integrated power supply system achieves centralized monitoring and decentralized control of AC power supply, DC power supply, AC uninterruptible power supply (UPS) for power applications, inverter power supply (INV) for power applications, and DC/DC converter power supply for communication on a unified platform. It resolves the compatibility issues of communication protocols among independent subsystems, enhances system networking and intelligence, and improves the overall management level of station power supply systems. By integrating maintenance interfaces, it enables expert maintenance, significantly reducing equipment failure rates and maintenance costs.