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Tension and Ampacity Monitoring System for Overhead Lines

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5 Author(s)
Albizu, I. ; Dept. of Electr. Eng., Univ. of the Basque Country UPV/EHU, Bilbao, Spain ; Fernandez, E. ; Eguia, P. ; Torres, E.
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Real-time monitoring allows the determination of the line state and the calculation of the actual rating value. The real-time monitoring systems measure sag, conductor tension, conductor temperature, or weather-related magnitudes. In this paper, a new ampacity monitoring system for overhead lines, based on the conductor tension, the ambient temperature, the solar radiation, and the current intensity is presented. The measurements are transmitted via general-packet radio service to a control center where a software program calculates the ampacity value. The system takes the creep deformation experienced by the conductors during their lifetime into account and calibrates the tension-temperature reference and the maximum-allowable temperature in order to obtain the ampacity. The system includes hardware implementation and remote-control software.

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Power Delivery, IEEE Transactions on  (Volume:28 ,  Issue: 1 )