ArticleScientific reports2025
Temperature analysis and ampacity evaluation of HV cable joints based on thermal flow coupling and measurable data.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Obtaining the temperature and ampacity of high voltage cable joints during operation is crucial for increasing the reliability and flexibility of power systems. Indirect measurement methods based on digital models have gained widespread attention because of their potential for accurate and comprehensive assessment. However, owing to limitations in modelling techniques and measurement capabilities, the digital model of cable joints necessitates the use of parameters that are difficult to obtain, resulting in limited accuracy, high costs, and poor interpretability. Therefore, in this study, a digital model is constructed on the basis of thermal-flow coupling and measurable data, and an ampacity evaluation method is proposed. Based on the installation conditions and heat transfer rules, the external environment model of cable joints has been simplified. The multiscale modelling method is adopted to couple temperature data between a 3-D cable joint with the surrounding air model and a 1-D external environment model. The finite element method (FEM) is used to analyse the thermal performance. Taking a 110 kV, 630 mm
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