Temperature field simulation and ampacity optimisation of 500 kV HVDC cable

Autor: Boda Zhou, Yanjie Le, Yalin Fang, Fan Yang, Tao Dai, Lu Sun, Jiapeng Liu, Lekai Zou
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: The Journal of Engineering (2019)
Druh dokumentu: article
ISSN: 2051-3305
45586837
DOI: 10.1049/joe.2018.8586
Popis: The temperature distribution of the submarine cable is an important parameter during the operation. In order to lift the efficiency of heat dissipation during the high-voltage direct current (HVDC) cable thermal cycling test, this study presents a method of cooling the cable using a cooling pipe with circulating water. A three-dimensional mode based on the thermal-fluid coupled model was established for 500 kV HVDC submarine cable by using finite element simulation software COMSOL Multiphysics and Fluent. The temperature field distribution and carrying ampacity of the HVDC submarine cables were analysed and compared under two cooling modes including bipolar double pipe and bipolar single pipe. The results indicate that both cooling modes can lift the current carrying ampacity of the cable; the bipolar double tube cooling mode performs better in cooling, a tiny circulating water velocity can significantly reduce the temperature of the submarine cable. Thus both suitable cooling mode and circulating water velocity were determined to accelerate the heat dissipation of the submarine cable during the thermal cycling test.
Databáze: Directory of Open Access Journals
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