Study on improving the current carrying capacity of power cable in real-time operating environment

Yang, Bo; Kui-hua, WU; Zheng, Zhijie; Sun, Wei; Wang, Yiqun; Yang, Shenquan; Liu, Rong; Liang, Feng

doi:10.1109/ciced.2016.7576118

Cited by 2 publications

(3 citation statements)

References 2 publications

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“…In practice, in addition to the cable temperature distribution, the maximum load current that cables can transmit (i.e., the load current that flows into the conductor) is also an key factor of cable operation when the cable conductor operates at the maximum allowable temperature (90 • C) [11,27]. The relationship between the conductor temperature and the current can be expressed by a one-dimensional nonlinear equation.…”

Section: The Calculated Model Of Cable Ampacitymentioning

confidence: 99%

“…In addition, high temperature will accelerate XLPE insulation aging and shorten the cable service life [9,10]. On the contrary, if the operating temperature of the cable conductor is much lower than 90 • C the operating efficiency of the cable will be reduced [11]. Therefore, the conductor temperature will directly affect the aging of the XLPE insulation and the operation of cable.…”

Section: Introductionmentioning

confidence: 99%

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Analysis on the Temperature Field and the Ampacity of XLPE Submarine HV Cable Based on Electro-Thermal-Flow Multiphysics Coupling Simulation

et al. 2020

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The operating temperature and the ampacity are important parameters to reflect the operating state of cross-linked polyethylene (XLPE) submarine high voltage (HV) cables, and it is of great significance to study the electrothermal coupling law of submarine cable under the seawater flow field. In this study, according to the actual laying conditions of the submarine cable, a multi-physical coupling model of submarine cable is established based on the electromagnetic field, heat transfer field, and fluid field by using the COMSOL finite element simulation software. This model can help to analyze how the temperature and ampacity of the submarine cable are affected by different laying methods, seawater velocity, seawater temperature, laying depth, and soil thermal conductivity. The experimental results show that the pipe laying method can lead to the highest cable conductor temperature, even exceeding the maximum heat-resistant operating temperature of the insulation, and the corresponding ampacity is minimum, so heat dissipation is required. Besides, the conductor temperature and the submarine cable ampacity have a linear relationship with the seawater temperature, and small seawater velocity can significantly improve the submarine cable ampacity. Temperature correction coefficients and ampacity correction coefficients for steady-state seawater are proposed. Furthermore, the laying depth and soil thermal conductivity have great impact on the temperature field and the ampacity of submarine cable, so measures (e.g., artificial backfilling) in areas with low thermal conductivity are needed to improve the submarine cable ampacity.

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Section: The Calculated Model Of Cable Ampacitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis on the Temperature Field and the Ampacity of XLPE Submarine HV Cable Based on Electro-Thermal-Flow Multiphysics Coupling Simulation

et al. 2020

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“…It is worthwhile to note that high-temperature working conditions can also accelerate the aging of XPLE, which has a serious influence on cable service life [ 22 ]. Cable efficiency is a direct function of the operating temperature, which means that as long as the service temperature is much lower than 90 °C, the cable will be preserved and its life will be longer [ 23 ]. The conductor temperature has a direct influence on XPLE aging, thus showing how critical the real-time continuous monitoring of the conductor temperature [ 24 ] is.…”

Section: Introductionmentioning

confidence: 99%

Fiber-Optic Sensors (FOS) for Smart High Voltage Composite Cables—Numerical Simulation of Multi-Parameter Bending Effects Generated by Irregular Seabed Topography

Drissi‐Habti

Abhijit

Manepalli

et al. 2022

Sensors

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Offshore renewable energy requires reliable high-voltage electric power cables to transport electricity to onshore stations. These power cables are critical infrastructures that are shipped to deep seas through shipping and handling operations and, once mounted, must then evolve in extreme conditions (sea, salt, wind, water-pressure, seabed topography, etc.). All of these operations and working conditions can lead to yielding of copper conductors, often resulting in electric shutdown. Indeed, copper is an excellent electric conductor (conductivity), but its mechanical properties are very poor. If any negligence occurs during the shipping and/or handling operations, copper can undergo plasticity, with effects on both mechanical and electric properties. It is therefore of prime importance to establish a reliable structural health-monitoring (SHM) technique that will enable the continuous recording of copper strain and temperature along a cable, and this has been proven using fiber-optic (FOS) sensors, when the phase is under tensile loading. In this prospective article, the scope is to maintain previous simulations and thus show that by the judicious placement of FOS, one can monitor strain and temperature within cables that are submitted to a bending. This article does not aim to deal directly with the case of a cable that undergoes bending on sloppy areas in seabeds. The idea behind the work is to suggest a concept for the use of embedded fiber-optic sensors and to think about all of what remains to be done as research in order to further suggest this technology to cable manufacturers.

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Study on improving the current carrying capacity of power cable in real-time operating environment

Cited by 2 publications

References 2 publications

Analysis on the Temperature Field and the Ampacity of XLPE Submarine HV Cable Based on Electro-Thermal-Flow Multiphysics Coupling Simulation

Analysis on the Temperature Field and the Ampacity of XLPE Submarine HV Cable Based on Electro-Thermal-Flow Multiphysics Coupling Simulation

Fiber-Optic Sensors (FOS) for Smart High Voltage Composite Cables—Numerical Simulation of Multi-Parameter Bending Effects Generated by Irregular Seabed Topography

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