External thermal resistance of aerial bundled cables

Morgan, V.T.

doi:10.1049/ip-c.1993.0009

Cited by 14 publications

(1 citation statement)

References 7 publications

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“…Cable joint core temperature is an important parameter 1 Corresponding author which react the cable joint operating state [7]. When the cable line is carrying the regular load, the temperature inside the joint will be up to 100 ℃, when the cable is at full capacity, the cable core temperature reaches 90 ℃, the joint temperature will be up to 140 ℃ [8]. At this status, if the temperature keeps rising, the oxide film of cable joint will be thickened, and the contact resistance will increase, persist for some time, the insulating material of joint will carbonize, and insulation will be damaged, leading to power transmission failure [9]- [11].…”

Section: Introductionmentioning

confidence: 99%

Ampacity Analysis and Calculation of Power Cable with the Impact of Cable Joint Considered

Gan¹,

Yang²,

Wu³

et al. 2017

dtmse

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Power cable plays a critical role in modern urban grid, its operational reliability and ampacity are closely related with the temperature of cable core. Accurate calculation of the cable ampacity and temperature distribution are of great significance for reliability and economical operation of the power cable line. Cable joint fault accounted for a large proportion of power cable fault. Joints abnormal temperature rise, insulation damage and explosion occurs occasionally, result in part of the existing cable lines run in lower current carry capacity status than the design standards. This paper constructed a simplified model of the power cable joint structure, using the principle of heat transfer to establish a mathematical model of temperature field of power cable joint, using finite element method analyze the temperature distribution in power cable joints, and calculate the ampacity of cable for whether the cable joint was concerned or not, respectively. Results show that the cable ampacity values decreased for the impact of cable joint is considerate.

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Section: Introductionmentioning

confidence: 99%