<![CDATA[Reliable electrical distribution is essential for critical airport operations, yet the electrical system at Sultan Mahmud Badaruddin II International Airport, Palembang, still depends largely on manual monitoring, field-based parameter recording, and decentralized supervision. This study aimed to develop a site-specific Supervisory Control and Data Acquisition (SCADA) architecture that integrates monitoring, data acquisition, communication, and supervisory control within a centralized environment. A site-specific engineering-design case-study approach was used, combining on-site technical survey, asset and network-configuration inventory, operational-needs analysis, technical specification, and Detail Engineering Design development. The assessment identified a 4,330 kVA utility supply, 51 medium-voltage panels, 14 transformers, three synchronized 1,000 kVA generator sets, mixed closed-loop and radial feeders, legacy analog protection, and limited centralized monitoring. The proposed architecture integrates a central control room, dual real-time servers, operator workstations, RTUs, fiber-optic communication, alarm and event management, historian functions, energy monitoring, and multi-protocol interoperability. Protection modernization, relay-coordination review, validated interlocking, communication testing, and cybersecurity assessment are treated as prerequisites for commissioning remote-control functions. The design therefore provides an engineering foundation for improved observability, controllability, interoperability, and maintainability. Because implementation and field-performance testing have not yet been completed, no quantitative improvement in recovery time or reliability indices is claimed.]]>
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