Development of External Damage Prevention and Status Monitoring System for HVDC Submarine Cables Based on Distributed Optical Sensing
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This paper presents a real-time monitoring system for high-voltage direct current (HVDC) submarine optical cablesusing distributed acoustic sensing (DAS) technology. The system aims to prevent external damage and monitor the cable status bydetecting vibrations and acoustic signals through optical fibers embedded in the submarine cables. The proposed technology enablesthe detection of various events, including ship anchor damage, natural deformation, and seabed activities, which could potentiallydamage submarine cables. The system comprises three main components: data collection and classification technology, analysis algorithms,and a real-time monitoring interface integrated with ship information systems. The system was tested on the HVDC submarinecable between Jeju and the mainland, supported by KEPCO. Vibration data were collected from both the onshore andmaritime sections under various environmental and operational conditions. Field tests demonstrated that the system could detectevents with a location accuracy of ±10m, detection speed within 15 s, classification accuracy of over 90%, precision of over 80%,and recall rate of over 80%. The developed system significantly enhances the reliability and safety of HVDC submarine cable infrastructurethrough the early detection of potential hazards.
Abstract
This paper presents a real-time monitoring system for high-voltage direct current (HVDC) submarine optical cablesusing distributed acoustic sensing (DAS) technology. The system aims to prevent external damage and monitor the cable status bydetecting vibrations and acoustic signals through optical fibers embedded in the submarine cables. The proposed technology enablesthe detection of various events, including ship anchor damage, natural deformation, and seabed activities, which could potentiallydamage submarine cables. The system comprises three main components: data collection and classification technology, analysis algorithms,and a real-time monitoring interface integrated with ship information systems. The system was tested on the HVDC submarinecable between Jeju and the mainland, supported by KEPCO. Vibration data were collected from both the onshore andmaritime sections under various environmental and operational conditions. Field tests demonstrated that the system could detectevents with a location accuracy of ±10m, detection speed within 15 s, classification accuracy of over 90%, precision of over 80%,and recall rate of over 80%. The developed system significantly enhances the reliability and safety of HVDC submarine cable infrastructurethrough the early detection of potential hazards.