Underground Transmission Sensors

Underground Transmission Sensors

Project Summary

This project is to investigate, evaluate, and demonstrate technologies in extruded dielectric transmission cable system monitoring. The following properties and components are of interest for real-time monitoring:

  • Partial discharges in cables, joints, and terminations
  • Grounding and sheath bonding effectiveness (e.g., through monitoring of cable sheath current, grounding impedance, and sheath voltage limiter and link box condition)
  • Cable movement through measurements of displacement of cable, cable racking, and clamps as a function of load current and surface temperature of joints and cables
  • Strain and compression on cable cleats and racks as a function of load current and surface temperature of joints and cables
  • Vibration of manhole walls, joints, cables, and racking systems caused by, for example, nearby traffic or construction work

Project Status

Project Phase: Fundamental R&D

Prototype parts are under evaluation. Lab testing and demonstration are planned.

Task Descriptions

Task Due Date Completed % Complete
Develop vision document and conduct industry survey Yes 100%
Define project objectives Yes 100%
Develop prototype parts TBD 20%

Images

Inspection and Monitoring Process
Inspection and Monitoring Process