Traditional substation power systems often suffer from high failure-to-operate rates of protection relays and increased risks of electrical fires due to structural deficiencies such as decentralized monitoring

the “cask effect” in battery capacity assessment

and the absence of insulation early-warning mechanisms.To address these problems

an intelligent AC/DC power management .The platform utilizes residual-current vector synchronous synthesis technology to achieve high-precision vector synthesis of multiple current transformer(CT)measurements via differential synchronization signals

effectively overcoming the inherent monitoring errors exceeding 30% in dual-power common-zero topologies.A grouped-parallel architecture consisting of nine 12 V/300 Ah battery modules is adopted to replace the traditional 108-cell 2 V series configuration.Each module achieves independent management

online capacity calibration

and fault isolation via a bidirectional inductor-inductor-capacitor(LLC)resonant converter.Based on a cloud-edge-device collaborative architecture following a “device-communication-application” hierarchical model

an intelligent terminal with edge computing capability was developed

establishing a closed-loop management mechanism of “threshold warning → trend analysis → proactive intervention”.The platform significantly improves the accuracy of system state perception

operational efficiency

and overall reliability.