输电线路架空地线融冰特性的研究

摘要

The paper analyzes hazard on overhead ground wire icing of transmission line. In order to melt ice on overhead grounding wire, the paper puts forward the necessity of overhead ground wire ice melting char-acteristics. By use of walk-in temperature and humidity chamber, temperature tester and large current gener-ator and other equipment, ground wire icing under different environmental conditions is simulated in laborato-ry and ice melting tests are conducted with different current values;rules of ice melting under different icing thickness and current values are summarized, and calculation correctness of ice melting current theory; be-sides, communication function before and after ice melting of OPGW is tested, from which a conclusion is drawn that the communication function can not be influenced by ice melting current.%分析了输电线路架空地线覆冰的危害，为消融架空地线的覆冰，需要研究架空地线融冰特性。应用步入式温湿箱、温度测试仪和大电流发生器等设备，在实验室范围内模拟了不同环境条件下地线覆冰状况，并进行不同电流下融冰的试验，总结了地线在不同覆冰厚度和不同电流下融冰规律，验证了融冰电流理论计算的正确性，同时对OPGW(光纤复合架空地线)进行了融冰试验前后通信功能测试，并得出不受融冰电流影响的结论。