Temperature Estimation Method on Optic–Electric Composite Submarine Power Cable Based on Optical Fiber Distributed Sensing
The status of an optic–electric composite high-voltage submarine cable (referred to as submarine cable) can be monitored based on optical fiber-distributed sensing technology, and at the same time, no additional sensor is needed in the monitoring system. Currently, this technology is widely used in...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-06-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/12/6/622 |
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| author | Chao Luo Zhitao Feng Yihua Zhu Yuyan Liu Yi Zhang Ying Zhou Muning Zhang Lijuan Zhao |
| author_facet | Chao Luo Zhitao Feng Yihua Zhu Yuyan Liu Yi Zhang Ying Zhou Muning Zhang Lijuan Zhao |
| author_sort | Chao Luo |
| collection | DOAJ |
| description | The status of an optic–electric composite high-voltage submarine cable (referred to as submarine cable) can be monitored based on optical fiber-distributed sensing technology, and at the same time, no additional sensor is needed in the monitoring system. Currently, this technology is widely used in submarine cable monitoring systems. To estimate the temperatures of conductor and XLPE (cross-linked polyethylene) insulation of the submarine cable based on the ambient temperature and optical fiber temperature, the thermoelectric coupling field model of the 110 kV single-core submarine cable is established and validated. The thermoelectric coupling field models of the submarine cable with different values of ambient temperature and ampacity are built, and the influence of ambient temperature and ampacity on the temperatures of conductor, insulation and optical fiber is investigated. Furthermore, the relationship between the temperatures of the conductor and insulation and the ambient temperature and optical fiber temperature is obtained. Then, estimation formulas for temperatures of conductor and insulation of submarine cable according to ambient temperature and optical fiber temperature are obtained and preliminarily validated. This work lays the foundation for condition evaluation of the submarine cable insulation, life expectancy and maximum allowable ampacity estimation. |
| format | Article |
| id | doaj-art-63f0d6e573e443988d1caa5f7f06b4fc |
| institution | Kabale University |
| issn | 2304-6732 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj-art-63f0d6e573e443988d1caa5f7f06b4fc2025-08-20T03:29:35ZengMDPI AGPhotonics2304-67322025-06-0112662210.3390/photonics12060622Temperature Estimation Method on Optic–Electric Composite Submarine Power Cable Based on Optical Fiber Distributed SensingChao Luo0Zhitao Feng1Yihua Zhu2Yuyan Liu3Yi Zhang4Ying Zhou5Muning Zhang6Lijuan Zhao7State Key Laboratory of HVDC, Electric Power Research Institute, China Southern Power Grid, Guangzhou 510663, ChinaNational Ocean Technology Center, Tianjin 300112, ChinaState Key Laboratory of HVDC, Electric Power Research Institute, China Southern Power Grid, Guangzhou 510663, ChinaState Key Laboratory of HVDC, Electric Power Research Institute, China Southern Power Grid, Guangzhou 510663, ChinaNational Ocean Technology Center, Tianjin 300112, ChinaNational Ocean Technology Center, Tianjin 300112, ChinaNational Ocean Technology Center, Tianjin 300112, ChinaSchool of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071003, ChinaThe status of an optic–electric composite high-voltage submarine cable (referred to as submarine cable) can be monitored based on optical fiber-distributed sensing technology, and at the same time, no additional sensor is needed in the monitoring system. Currently, this technology is widely used in submarine cable monitoring systems. To estimate the temperatures of conductor and XLPE (cross-linked polyethylene) insulation of the submarine cable based on the ambient temperature and optical fiber temperature, the thermoelectric coupling field model of the 110 kV single-core submarine cable is established and validated. The thermoelectric coupling field models of the submarine cable with different values of ambient temperature and ampacity are built, and the influence of ambient temperature and ampacity on the temperatures of conductor, insulation and optical fiber is investigated. Furthermore, the relationship between the temperatures of the conductor and insulation and the ambient temperature and optical fiber temperature is obtained. Then, estimation formulas for temperatures of conductor and insulation of submarine cable according to ambient temperature and optical fiber temperature are obtained and preliminarily validated. This work lays the foundation for condition evaluation of the submarine cable insulation, life expectancy and maximum allowable ampacity estimation.https://www.mdpi.com/2304-6732/12/6/622optic–electric composite high-voltage submarine cableoptical fiber-distributed sensingthermoelectric coupling fieldconductor and insulation temperature estimation |
| spellingShingle | Chao Luo Zhitao Feng Yihua Zhu Yuyan Liu Yi Zhang Ying Zhou Muning Zhang Lijuan Zhao Temperature Estimation Method on Optic–Electric Composite Submarine Power Cable Based on Optical Fiber Distributed Sensing Photonics optic–electric composite high-voltage submarine cable optical fiber-distributed sensing thermoelectric coupling field conductor and insulation temperature estimation |
| title | Temperature Estimation Method on Optic–Electric Composite Submarine Power Cable Based on Optical Fiber Distributed Sensing |
| title_full | Temperature Estimation Method on Optic–Electric Composite Submarine Power Cable Based on Optical Fiber Distributed Sensing |
| title_fullStr | Temperature Estimation Method on Optic–Electric Composite Submarine Power Cable Based on Optical Fiber Distributed Sensing |
| title_full_unstemmed | Temperature Estimation Method on Optic–Electric Composite Submarine Power Cable Based on Optical Fiber Distributed Sensing |
| title_short | Temperature Estimation Method on Optic–Electric Composite Submarine Power Cable Based on Optical Fiber Distributed Sensing |
| title_sort | temperature estimation method on optic electric composite submarine power cable based on optical fiber distributed sensing |
| topic | optic–electric composite high-voltage submarine cable optical fiber-distributed sensing thermoelectric coupling field conductor and insulation temperature estimation |
| url | https://www.mdpi.com/2304-6732/12/6/622 |
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