Abstract:
Introduction In order to solve the problem that the supporting cable is disconnected due to improper selection during the construction of the transmission line across the sealing network, based on the mechanical calculation method of the mechanical performance of the overhead line, a selection algorithm of the supporting cable is proposed to make the construction safe and efficient.
Method Firstly, the tensile strength, expansion ratio and weight per unit length of the rope material were compared, and the material of the supporting cable, namely Dyneema rope, was determined; Then based on the equilibrium equation of overhead space mechanics, the mechanical calculation model of the bearing cable was derived; Finally, the selection algorithm of the supporting cable was proposed by the mechanical calculation model.
Result Taking the Aksuku 750 kV substation delivery project as an example, the supporting cable selected by the supporting cable selection algorithm satisfies the construction requirements.
Conclusion The verification results show that the proposed selection algorithm of the supporting cable is feasible and can provide guidance for practical application.
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