Abstract
High-voltage power cables can be subjected to thermomechanical forces during operation due to the rising cable temperature or drastic ambient temperature changes, which threaten the operational safety of the cables. In this paper, first of all, the thermal expansion, serpentine arc displacement and serpentine arc axial force of the cable in the limit operation state are analyzed theoretically. The serpentine arc displacement and serpentine arc axial force under different serpentine laying parameters are compared and the optimal laying method is derived. Then the theoretical optimal solution is simulated using finite element analysis method to prove the correctness of the theoretical results. Finally, the recommended laying parameters of the serpentine laying method are given.
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