复合材料杆塔人工加速老化试验及其长期性能评估

发布时间：2018-07-03 14:03

本文选题：复合材料杆塔 + 多因子老化试验　；参考：《电工技术学报》2017年19期

【摘要】：复合材料杆塔在实际运行中受到高湿、高低温、紫外线、雨水和电场等多种因素的侵蚀老化,同时导线在风力作用下的振动也会造成杆塔应力疲劳老化。为全面评估复合材料杆塔的运行可靠性和耐老化特性,结合我国杆塔实际运行环境,在IEC 5 000 h多因子老化试验方法的基础上进行改进,首次对复合材料杆塔开展人工加速老化试验,并通过在杆塔表面植入光纤光栅传感器实时监测杆塔应变。试验前,通过有限元力学仿真确定光纤光栅传感器在杆塔上的植入部位;试验中通过加装振动装置模拟风力对杆塔的影响。对杆塔应变数据进行分析,结果显示:紫外和高热高湿环境对杆塔应变有较大影响;经过5 000 h人工加速老化试验后,杆塔应变变化幅度小,杆塔未出现明显缺陷,表明复合材料杆塔可在户外长期运行。
[Abstract]:Composite tower is subjected to high humidity, high temperature, ultraviolet radiation, Rain Water, electric field and other factors in actual operation, and the vibration of conductor under wind force will also cause stress fatigue aging of the tower. In order to comprehensively evaluate the reliability and aging resistance of composite tower, combined with the actual operating environment of the tower in China, the method of IEC 5000 h multi-factor aging test was improved. The artificial accelerated aging test was carried out for the composite tower for the first time, and the strain of the tower was monitored in real time by inserting fiber Bragg grating sensor on the surface of the tower. Before the test, the placement of fiber Bragg grating sensor on the tower is determined by finite element mechanical simulation, and the influence of wind force on the tower is simulated by adding vibration device in the experiment. By analyzing the strain data of the tower, the results show that UV and high heat and high humidity environment have great influence on the strain of the tower, and after 5 000 h artificial accelerated aging test, the strain change of the tower is small and there is no obvious defect in the tower. The results show that the composite tower can be operated outdoors for a long time.
【作者单位】：武汉大学电气工程学院;国网湖北省电力公司荆州供电公司;
【分类号】：TM75

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