Modelling of convective cooling on conductor thermal rating methods
作者： Shahnurriman Abdul Rahman , Konstantinos Kopsidas
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摘要: Thermal rating of overhead line (OHL) conductors is mainly calculated according to standard methods IEEE, CIGRE, and IEC which based on the heat exchange mechanisms conductor surrounding. Different convective cooling models are implemented by standards thus significant discrepancy recorded during low wind conditions. COMSOL used investigate impact more accurate mixed model OHL so as appropriateness methods. At less than 0.2 m/s, conservatism obtained through while IEEE CIGRE not entirely appropriate. The violate designed 70° 180° Drake 4.35° 20.9° respectively. These temperature violations also ageing risks contribute 28.74 mm 6.19 incremental in sag for 300 meters Aluminum-Alloy Conductor (AAAC) Aluminum Composite Reinforced (ACCR)
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