A Study on the Material Parameter Sensitivity of the Intermediate Joint Temperature Axial Sensing Model of 110 kV Single Core Cable
The real-time sensing of the hot spot tempera-ture in the intermediate joint of high voltage cables is of great significance to the safe operation of the power cable and the evaluation of dynamic current carrying capacity.In this paper,we took the intermediate joint of 110 kV single core cable as the research object and constructed the regular joint temperature field simulation model and its finite element discrete boundary,and established the structure simplification method based on heat flow equivalent.The single factor variation and orthogonal combination method was used to analyze the influence of material parameter dispersion on the fitting degree and sensitivity of the intermediate joint temperature axial sensing model.The results show that the regular simplification modeling method proposed in this paper is suitable for the intermediate joint temperature axial sensing models of different types and structures,and it has good robustness to the structure,material and on-site craftsmanship dispersion.
power cabletemperature fieldaxial sensing modelsensitivity
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