Date of Publication : June 2026

Abstract: The engineering approach to SCADA railway traction systems is predominantly manual, prone to errors, and difficult to scale. Engineers must independently design graphical Human-Machine Interface (HMI) layouts and electrical topology definitions for Decision Support Systems (DSS), usually employing large vendor-specific XML files. This division results in discrepancies between visual representations and decision-making processes, heightened commissioning requirements, and diminished capacity for configuration reuse or alteration. This document introduces a comprehensive visual-topological modeling approach that views visual circuit design as the sole authoritative source for both Human-Machine Interface (HMI) and Decision Support System (DSS) configurations. The suggested method allows engineers to design traction substations through a graphical interface, which then automatically creates a topology-aware model and generates XML configurations for HMI displays and DSS connectivity. Furthermore, the framework incorporates a JSON-based intermediate representation, enabling round-trip engineering. This allows the generated configurations to be reopened, edited, and regenerated without loss of structural or semantic information. A hierarchical relational perspective facilitates the manipulation of component and connection elements without spatial constraints. The proposed blueprint eliminates unnecessary manual configuration effort, enforces consistency by design, and significantly enhances the scalability of railway traction SCADA configuration engineering. The effectiveness and practical applicability of the approach are demonstrated through a real-world metro traction SCADA case study.

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