Abstract
This paper presents a thermal circuit model for analysis of transient temperature rise of duct-laid single cable and its application in practical analysis. The sample data was obtained by general computation software. The parameters of the model was extracted through these sample data based on genetic algorithm. The sample data of the general computation software were employed to verify the validity of the model. The maximum error of temperature rise was observed to be less than 3K. Both the model structure and the parameter extraction method were confirmed to be effective and reliable through the verification test. Application of test data for model parameter extraction may avoid the influence of complicated environment conditions on accuracy of numerical simulation and improve the adaptability of the model in practical application. In addition, the study showed that flexible adjustment of the model may meet the requirements for analysis of transient temperature rise at various parts of the cable while maintaining the convenience and accuracy of the model.
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