架空输电导线脱冰跳跃实验系统

Ice Shedding Experimental System for Overhead Transmission Lines

导线覆冰是冰区架空输电线中的常见现象,导线脱冰振荡会严重影响输电塔的结构安全。为了实现对导线覆冰脱冰的多工况实验模拟,基于总线架构式设计思想,研制了一套新型导线脱冰振荡非线性模拟实验系统,主要包括脱冰模拟模块、脱冰控制模块和数据采集模块三大部分。脱冰模拟模块负责基本实验环境的搭建,可以根据不同的架空输电线工况进行设计。脱冰控制模块实现脱冰时序的设置,并按照时序高精度地模拟出各种脱冰跳跃工况。数据采集模块对导线动张力进行实施采集,并利用双目立体视觉技术实现导线脱冰跳跃轨迹测量。系统具有较高的自动化水平,控制精度良好,能够有效测得脱冰跳跃过程中的动张力和导线跳跃轨迹。

Ice shedding occurs frequently on overhead transmission line in ice area. The line vibration caused by ice shedding may reduce the structure safety of transmission tower. In order to implement the experiment simulation for the ice shedding of transmission line under multi-operating conditions,this paper develops a new nonlinear simulation experiment system of ice shedding for overhead transmission lines based on bus architecture design,which consists of ice shedding simulation module, ice shedding control module and data acquisition module. The ice shedding simulation module establishes the fundamental environment of the experiment,which can design according to different transmission line conditions. The ice shedding control module sets the time sequence of ice shedding,which can accurately simulate different ice shedding conditions according to the time sequence. The data acquisition module acquires the dynamic tension in real time,and adopts binocular stereo vision technology for the measurement of ice shedding jump track of the overhead conductor. The system has a higher lever of automation and a good control precision,which can effectively obtain the dynamic tension and ice shedding track during ice shedding.