Transient thermal performance of e.h.v.-cable joints

Weedy, B.M.; Thelwell, M.J.

doi:10.1049/piee.1972.0102

Cited by 5 publications

(2 citation statements)

References 1 publication

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“…Further investigations included Ref. [10], which utilized the two-dimensional finite element method to analyze both the steady-state and transient temperature distribution of cable joints while accounting for the variation of dielectric loss with temperature. Refs.…”

Section: Introductionmentioning

confidence: 99%

Exploration of Temperature Inversion in Intermediate Joints of 10 kV Three-Core Cable

Li,

Chan,

et al. 2024

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In order to precisely ascertain the temperature at the hot spot within the intermediate joint of a three-core cable, this study focused on a 10 kV three-core cable joint as its primary subject. A three-dimensional finite element model of the cable joint was constructed, enabling the calculation of both the steady-state hot spot temperature field distribution and the transient temperature rise curve of the joint. Employing a one-dimensional transient thermal path model for the cable body, a radial inversion model for the cable core temperature was established. Through simulating the transient temperature field of the cable joint under varying currents, a fitting relationship was determined for the axial temperature points of the cable core. Subsequently, an inversion perception model was devised to calculate the hot spot temperature of the cable joint based on temperature measurements at specific points on the outer surface of the cable. Under both continuous and periodic loads, the inversion results revealed a consistent trend in the temperature at the joint crimping point with the finite element calculation outcomes, demonstrating a maximum error of within 3 degrees Celsius. This verification underscores the precision of the temperature combination inversion method when applied to three-core cable joints.

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Section: Introductionmentioning

confidence: 99%

Exploration of Temperature Inversion in Intermediate Joints of 10 kV Three-Core Cable

Li,

Chan,

et al. 2024

Processes

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“…A joint, also termed splice [1], forms the potential hot spot [2,3] in a power cable system mainly due to its thicker insulation in comparison with the cable. The steady-state conductor temperature difference between cable and joint centre can reach 13.8°C or even ∼30°C according to the measured results [4][5][6].…”

Section: Introductionmentioning

confidence: 99%