一种架空输电导线弧垂测量的方法

A Method of Sag Measurement for Overhead Transmission Line

针对常规架空输电导线弧垂测量方法精度低、难度大的问题,提出一种采用三维激光扫描仪获取数据、基于非线性最小二乘法拟合求解导线悬链线方程,进而高精度计算任意位置处导线弧垂的方法。通过工程实践,该方法能够解决常规弧垂测量外业难以瞄准、测量误差大的问题,同时因构建导线的悬链线方程,故可获取任意位置处的导线弧垂,解决常规测量密度低的问题。

In view of the low accuracy and great difficulty of the conventional overhead transmission line sag measurement method,a method is proposed to calculate the sag at any position with high accuracy by using threedimensional laser scanner to obtain data and solving the catenary equation of the conductor based on nonlinear least squares fitting.Through engineering practice,the method solves the problems of difficult aiming and large measurement error of conventional sag measurement in field work,and at the same time,because the catenary equation of the traverse is constructed,the sag of the traverse at any position can be obtained,and the problem of low density of conventional measurement is solved.