西南山地电力走廊导线覆冰及风载荷观测试验

Observation Test of Wire Icing and Wind Loading in Power Corridor of Southwest Mountain Region

本试验在高寒山区开展了基于拉力传感器的导线覆冰重量观测测试和基于三维测力天平的导线风载应力观测测试,探索了观测装置和试验方法的可行性。通过以西昌大菁梁子站为代表的测试结果进行分析,得出以下结论:基于拉力传感器的导线覆冰重量观测和基于三维测力天平的导线风载应力观测的试验方法可行、观测数据真实有效,具有输电线路导线覆冰持续观测能力;由风速和导线受力观测数据计算得到导线风阻系数,与其典型值相当;在高寒山区实地开展导线覆冰重量和风载应力观测试验,能够为评估导线力学模型积累观测资料,对导线覆冰和强风作用下的载荷基本特征及演变机理的研究具有重要的意义。

In this experiment,we carried out the measurement of conductor icing weight based on tension sensor and wind loading stress measurement based on three-dimensional force balance in cold mountainous area,and explored the feasibility of observation device and test method.Through the analysis of the test results represented by Dajingliangzi Station in Xichang,the following conclusions are drawn.The results show that the test methods of ice weight observation based on tension sensor and wind load stress observation based on three-dimensional force balance are feasible,and the observation data are true and effective,which have the ability of continuous observation of wire icing.The wind resistance coefficient calculated from the observation data of wind speed and wire force,which is equivalent to its typical value.The field test of conductor icing weight and wind loading stress in cold mountainous area can accumulate observation data for evaluation of conductor mechanical model,and it is of great significance to study the load basic characteristics and evolution mechanism of conductor icing and strong wind.