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乡村高压电线防风和增容融合技术

Integration of Windproof and Capacity Enhancement Technologies for Rural High-voltage Power Lines

  • 摘要: 原有高压导线载流量难以满足新兴的用电需求,同时高压导线通常经过山顶,因受大风影响容易发生断线,有必要研究新型导线来替换普通钢芯铝绞线来提升输送容量和抵御山风。设计融合防风和增容两种技术的新型导线,凹弧导线表面有利于疏通气流,改变铝导体中微量元素配比有利于更好地导通电流,同时设计了新型线夹以兼容新型导线。仿真计算结果表明新型导线较普通钢芯铝绞线风阻系数大为降低,且同截面的载流量增加,配套线夹使应力集中系数下降。融合防风和增容技术的新导线可系统地解决乡村用电问题,为乡村产业发展提供充足电力保障。

     

    Abstract: The current-carrying capacity of existing high-voltage conductors is insufficient to meet the emerging electricity demand. Meanwhile, high-voltage conductors typically pass through mountain tops and are prone to breakage under strong winds. Thus, it is imperative to develop new types of conductors to replace conventional steel-cored aluminum stranded wires, thereby enhancing transmission capacity and improving resistance to mountain winds. This paper designs a novel conductor that integrates wind-resistant and capacity-increasing technologies. The grooved surface of the conductor facilitates airflow flow-through distribution, while the optimized trace element composition of the aluminum conductor improves electrical conductivity. Additionally, a new type of clamp is systematically designed to be compatible with the novel conductor. Simulation calculations indicate that the wind resistance coefficient of the new conductor is significantly lower than that of ordinary steel-cored aluminum stranded wire. Additionally, the current-carrying capacity of the same cross-section is increased, and the stress concentration factor is reduced by using the matching clamp. The new conductor, which integrates wind resistance and reinforcement technologies, can systematically solve the problem of rural electricity supply and provide sufficient power guarantee for rural industrial development.

     

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