考虑相邻档及绝缘子对输电导线找形的影响

为了精确求解导线在静力载荷下的形状,首先找出考虑相邻档导线及绝缘子对导线端部约束影响的数学模型,并用悬链线法推导了覆冰导线在静力载荷作用下的悬垂函数及弧垂公式,然后用传统数学模型推导的悬垂函数和笔者推导的悬垂函数分别计算同一条覆冰导线在静力载荷下的形状.通过两种悬垂函数计算结果的对比,得出了笔者提出的数学模型优越于传统数学模型.使用ANSYS有限元软件,采用找形分析法对笔者提出的数学模型进行了找形计算,通过与笔者提出的悬垂函数计算结果对比,得出了简便的有限元法也能够精确计算导线在静力载荷作用下的形状.最后用有限元法计算并分析了不均匀覆冰载荷对导线找形的影响,得出了一些有实际意义的结论.

Influence on Form-Finding of Transmission Conductor Considering Adjacent Span and Insulator

To find the precise shape of conductor in static loads, the mathematical model of considering adjacent span conductor and the insulator effect on end constraint of the conductor are found out, and suspense sagging function and sag formula of iced conductor in static load is derived by catenary method, then the suspense sagging function and traditional suspension function respective calculates the shape with iced conductor in static loads, it is obtained that the suspense sagging function is superior to the traditional suspension function by comparing the results. To find out the simple calculation method, the mathematical model for the shape is found by using the ANSYS finite element software, the finite element method is simple and can calculate the wire accurately under static loading shape by draping function and the calculation results. Finally, the conductor＇s shape in the uneven ice load is analyzed and calculated by using finite element method, and some meaningful conclusions are obtained.