为进一步提高配电线路抵抗台风能力,运用有限元对10 kV架空配电线路防风拉线的加固方法进行数值模拟研究.首先,利用有限元分析软件ABAQUS/CAE建立10 kV单回路配电线路一个标准段的三维有限元模型,包括导线、混凝土电杆、横担、拉线等构件,作用在电杆和导线上的风荷载可以转化为等效重力加速度;然后分析电杆在不同风速等级下的挠曲线变化、应力分布以及拉线的拉力大小,讨论不同拉线安装位置和安装角度对配电线路加固效果的影响.通过对加固效果数值研究,验证了在配电线路防风加固设计中合理利用拉线的有效性.%In order to improve anti-typhoon ability of power distribution lines, this paper applies finite element for numerical simulation on strengthening method for windstay wires of 10 kV overhead power distribution lines. It firstly uses finite element software ABAQUS/CAE to establish a 3D finite element model for one standard section of 10 kV single circuit power distribution line including components of wires, concrete poles, cross arm, stay wires, and son on. Then it analyzes change of deflection curve, stress distribution and tension of stay wires of the poles under different wind speed as well as discusses impact of different installation position and angles of stay wires on the power distribution line. Numerical research on strengthening effect verifies effectiveness of reasonably using stay wires in designing windproof strengthening for power distribution lines.
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