Power Cable Monitoring
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Maximizing and optimizing the current carrying capacity of power transmission cables and distribution networks within their thermal limits is a principal concern for their design, installation, and operation. A proven and widely accepted solution is the implementation of fiber optic Distributed Temperature Sensing (DTS) solutions. DTS-based solutions effectively and reliably measure the real-time dynamic temperature response to load along the complete length of the cables. This provides the necessary information to the operator to allow the load to be maximized without exceeding the thermal limit, avoiding cable loss and maintaining cable life. A typical DTS power cable monitoring solution would consist of one or more DTS units connected to optical fiber(s) which are either pre-installed, secured along the outside of the cable, or installed into adjacent ducts. SensorTran’s intelligent DTS monitoring solutions provide real-time dynamic temperature readings with high accuracy, fine resolution, and fast measurement speeds. They provide up to 40,000 discrete temperature measurement points, along the complete length of the power cables, together with their individual locations. These systems are perfectly ideally suited for power cable and cable-joint monitoring. Fiber optic probes can be installed as part of the cable itself in new construction or retrofitted for existing power lines. SensorTran has an established expertise in retrofitting the fiber into existing installations with no cable damage. As the Smart Grid initiative accelerates in 2008, we envision that DTS real-time temperature monitoring will become a standard solution within the overall specifications for Smart Grid. Applications for this technology include: Power Transmission Cables: dynamic temperature and health monitoring of long range power transmission cables and joints including direct buried cable, cable tunnels and cable ducts. Additionally provides installed data for input into real-time cable rating and ampacity calculation software. Power Distribution Networks: real-time temperature and health monitoring for the optimization and health monitoring of entire power distribution networks. Ideally suited for direct buried, cable tunnels and cables installed within multiple cable ducts. These systems have substantial benefits for the monitoring of power cables: Provides real-time dynamic temperature information along the full length of transmission cables and complete networks for load maximization and health monitoring. Identifies small hot spot locations and temperatures (joint health monitoring for example) with no need of prior knowledge Provides accurate and actual temperature data for input into dynamic cable rating systems or calculations based on installed conditions Establishes cable thermal profiles and footprints Provides additional early fire detection in cable tunnels and ducts |
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Transmission Cable Monitoring brochure |
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Distribution Cable Monitoring brochure |
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