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Distributed Temperature Sensing and Real Time Thermal Rating for Underground Power Cable Monitoring
Author(s)
Tangtheerajaroonwong, Wiroj
Tanapornchinpong, Phiphat
Kiatjaroonlert, Boonsak
Khan-Ngern, Werachet
Sangracha, Chanintorn
Date Issued
January 1, 2025
Type
Conference Paper
Abstract
This paper presents the distributed temperature sensing (DTS) technology and its application mainly on underground power cables. The main measuring principle is detecting the back-scattering light via Raman scattering that varies and depends on temperature at each point of optical fiber. In this paper, the authors present the monitoring results that the load current is applied for 50% of the rated current of the 69 kV and 115 kV transmission cables, and the DTS detects temperature increasing 0.5°C from the ambient temperature. This paper also shows real time thermal rating for calculations of conductor temperature.
Citation
22nd International Conference on Electrical Engineering Electronics Computer Telecommunications and Information Technology Ecti Con 2025, 2025