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Distributed Temperature Sensing (DTS) Systems for high voltage cable systems were frequently discussed in course of the recent Jicable conference , the 8th International Conference on Power Insulated Cables.
Several papers on online condition monitoring based on fibre optic temperature sensing were presented. In more papers DTS was mentioned as essential part of the high voltage cable project discussed. This is an example from the city of Xiamen, China:
The necessity analysis of distributed fibre optic temperature monitoring by Xiamen power cable alarm case study
YAN Youxiang, SU Xueyuan – Xiamen power Ultility, Xiamen, Fujian; China XIAO Chuanqiang – SINDIA, Beijing; China
Abstract
This paper introduces the application results of Distributed Fibre Optic Temperature Monitoring System (DTS) used in Xiamen Power utility for 220 kV power cable operation monitoring. In November 2007, one cross bonding box earthing problem caused by water leakage in a cable joint manhole was detected. In terms of the deployed DTS system this problem was resolved in time, successfully preventing the potentially serious large-scale cable faults. Thus to demonstrate the theory of DTS system for larger applications, this paper presents the reliability, sensitivity and usage of DTS in relation to the temperature monitoring.
Keywords
Distributed Fiber-Optic Temperature Monitoring; Power Cable operation monitoring; Temperature Alarm; Cross Bonding; Short Circuit
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