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Medium-Voltage IoT Distribution Terminal (XTU)
Applications
The core of the medium-voltage IoT distribution terminal (XTU) consists of a distribution automation unit and an IoT unit, with one-way data communication within the terminal facilitated by a micro one-way physical isolation gateway between them. The terminal does not alter the original communication method of distribution automation service data with the distribution automation master station (production control zone), but adds an operation & maintenance service data communication channel to enable data exchange between the terminal and the distribution automation cloud master station (management information zone). The terminal's hardware, software, and debugging & maintenance adopt modular and configurable designs to meet flexible on-site configuration requirements.
System Composition


Functional Features
  • Modular and standardized hardware design supports plug-and-play and spare part interchangeability.
  • Software APP-ization and container technology enable remote upgrades and functional expansion.
  • One-way isolation within the terminal and northbound dual communication channel design meet information security protection requirements.
  • Edge computing technology enables local data processing, reducing data transmission and dependence on the master station.
  • Compatibility design ensures interface compatibility with standardized terminal primary equipment, reducing investment and enabling smooth upgrades.
  • Optimal hardware technology architecture achieves both functional and performance upgrades while ensuring the best cost-effectiveness.
Cases
Panoramic monitoring of medium-voltage distribution overhead lines
Panoramic monitoring of medium-voltage distribution overhead lines
To effectively monitor the operational status of overhead distribution lines, promptly identify potential fault risks, quickly locate faults after they occur, and enhance operational efficiency and power supply reliability, an online monitoring system for overhead distribution lines based on medium-voltage IoT distribution terminals (XTU) is proposed. While performing conventional distribution feeder automation functions, this system collects and analyzes the status of its components (or modules), gathers data from line T-joint temperature sensors, ice-coating sensors, galloping sensors, and fault traveling wave or hidden traveling wave currents. It performs fault early warning judgment and fault traveling wave information processing at the terminal equipment and transmits the results to the distribution automation master station system, ultimately making them available to operation personnel via the IoT master station system to enhance distribution operation and inspection quality and efficiency.