Research and design of DC500kV optical fiber composite submarine cable

Mei, Wenjie; Pan, Wenlin; Chen, Tao; Song, Guanghui; Di, Jiancheng

doi:10.1109/icetas.2017.8277901

Cited by 9 publications

(7 citation statements)

References 1 publication

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“…Another important aspect in submarine cable selection is determining whether energy transmission will be through AC or DC cable. Recent studies show that the topic of energy transmission through DC submarine cables has gained significant popularity (Hu et al, 2014;Lldstad, 1994;Mei et al, 2017;Zhang et al, 2021). Literature and practical examples reveal that optimal system design is performed based on the power to be transmitted, transmission distance, and investment cost (Takeshita et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, online monitoring of cable conditions is crucial to prevent unexpected faults (Ou et al, 2022). One of the primary reasons for submarine cable failure is thermal stress (Mei et al, 2017;Yu et al, 2022). In cases of excessive or unbalanced loading, thermal stress on cable insulation can increase, leading to a decrease in the cable's life.…”

Section: Introductionmentioning

confidence: 99%

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Farkli Yükleme Şartlari İçi̇n Xlpe İzoleli̇ Deni̇zalti Kablolarinin Isil Anali̇zi̇

Arabul

Kumru

2023

Journal of Naval Sciences and Engineering

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Submarine cables are critical assets that play an indispensable role in interconnected power systems, particularly in cross-sea energy transmission and offshore wind turbines. Their importance is further accentuated in exigent situations such as natural disasters and war, which emphasize the need for secure, reliable and uninterrupted energy supply. Furthermore, the investment and operating costs of submarine cables are relatively higher than other power system equipment, making it essential to operate them under the rated operating conditions to prevent possible faults and ensure power system stability. As thermal stress can lead to damage of cable insulation, it is an essential parameter to consider. Overloading increases thermal stress, resulting in rapid aging of the cable insulation and a shorter cable lifetime. Therefore, it is imperative to determine the maximum conductor temperatures and current carrying capacities of submarine cables under varying loading rates and ambient conditions using thermal analysis. In this study, thermal analyses are carried out for a three-phase, 220 kV HVAC, XLPE insulated submarine cable under different loading conditions. The findings demonstrate that the maximum temperature, current carrying capacity, and total losses of the cable are significantly impacted by loading rate, phase imbalance, and seawater temperature.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Farkli Yükleme Şartlari İçi̇n Xlpe İzoleli̇ Deni̇zalti Kablolarinin Isil Anali̇zi̇

Arabul

Kumru

2023

Journal of Naval Sciences and Engineering

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“…Composite submarine cables have complex structures and work under harsh operating environment. Compared with traditional power and optical cables, they have higher failure rate and are prone to more types of faults [4][5][6][7]. Since the first successful laying of a submarine cable, external substances have constantly threatened and damaged these cables over the years.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Three-Core Composite Submarine Cable Damage Due to Ship Anchor

Tan

et al. 2022

IEEE Access

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Suspended submarine cables are prone to likely mechanical damages due to ship anchors, which represent a significant threat to the reliability of power transmission and information communication networks. This paper is aimed at presenting a detailed investigation to the dynamic response of a ship anchor impacting the suspended section a submarine cable in order to reduce the risk of cable damage. In this regard, a three-dimensional and dual nonlinear model of the anchor affecting a subsea cable is established using ABAQUS finite element analysis software. The damage effect due to the ship anchor on the suspended and buried-in-soil sections of the cable is studied. Results show that when a ship anchor hits a suspended section of the subsea cable, the mechanical stress is concentrated at the impacted point and is progressing to both sides of the suspended section with a significant cable deformation. On the other hand, the buried section of the cable suffers from a short impact process, and the deformation is relatively small. To reduce this impact effectively, a detailed technical comparison of two common dumping and filling methods is conducted, and the better protection method is proposed.INDEX TERMS Composite submarine power cable; anchor fall impact; suspended cable and pipeline; throwing method; dent depth

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“…Finite element analysis (FEA) [2] is a widely-applied approach to model the complex system of submarine cables. In FEA, by using mathematical approximation, a finite number of known variables are used to approximate a real system containing an infinite number of unknown variables.…”

Section: Introductionmentioning

confidence: 99%

“…In FEA, by using mathematical approximation, a finite number of known variables are used to approximate a real system containing an infinite number of unknown variables. The current capacity finite element software was used in [2] to perform the simulation analysis and derive the direct current (DC) resistance requirements of the submarine cable.…”

Section: Introductionmentioning

confidence: 99%

VMD and Self-attention Mechanism Based Bi-LSTM Model for Fault Detection of Optical Fiber Composite Submarine Cables

Feng

et al. 2022

Preprint

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As the main electrical equipment of offshore power grids, optical fiber composite submarine cables undertake the task of power transmission and data communication. In order to ensure the proper functioning of the submarine cable, it is necessary to analyze the working state of it and identify and locate the fault event. This paper proposes a fault detection method for submarine cables, that is, the VMD and self-attention based Bi-LSTM model. First, we use the ANSYS software to generate the vibration waveforms of three main fault events of optical fiber composite submarine cables. Then by generating the detection matrix of additive white gaussian noise (AWGN) and the vibration waveforms, it can realize the orientation and detection of fault events in single submarine cable. In addition, the vibration signal can be decomposed into IMF components using variational mode decomposition (VMD) for feature extraction. Moreover, the IMF components are input to the self-attention layer for feature fusion and Bi-LSTM module for further feature extraction. Finally, the result of the fault detection is output through the classification layer. According to the comparative experiment and ablation experiment, the proposed model has proved to outperform the other benchmark models and is robust and stable under the condition of different signal-to-noise ratios (SNRs).

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Research and design of DC500kV optical fiber composite submarine cable

Cited by 9 publications

References 1 publication

Farkli Yükleme Şartlari İçi̇n Xlpe İzoleli̇ Deni̇zalti Kablolarinin Isil Anali̇zi̇

Farkli Yükleme Şartlari İçi̇n Xlpe İzoleli̇ Deni̇zalti Kablolarinin Isil Anali̇zi̇

Analysis of Three-Core Composite Submarine Cable Damage Due to Ship Anchor

VMD and Self-attention Mechanism Based Bi-LSTM Model for Fault Detection of Optical Fiber Composite Submarine Cables

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