具有融冰功能的光纤复合架空地线应用研究

Application Research on De-icing OPGW

对于光纤复合架空地线(Optical Fiber Composite Overhead Ground Wire,OPGW)线路实施融冰,目前多采用直流融冰技术,主要是对OPGW架设方式进行绝缘化改造,但在实际应用中仍有许多无法避免的缺陷。为了进一步解决OPGW融冰的技术性问题,文章介绍了一种具有可通流融冰功能的光纤复合架空地线设计方案和应用方法,并在实验室及现场覆冰试验站进行了实际融冰试验,在实际覆冰条件下,试验验证了全绝缘和内嵌式融冰的实际融冰电流、融冰时间和融冰时对缆中光纤的温度影响。结果表明,该结构可融冰OPGW融冰效果良好,满足线路融冰要求。

Currently, in order to use the DC de-icing technology for OPGW, the insulation alteration is necessary. But there are many unavoidable defects which result in the failure of OPGW de-icing. In this paper, the design and application method of a kind of OPGW with de-icing function is introduced. The effect of de-icing is tested in laboratory and actual icing line and the difference of effects between the OPGW with de-icing function and normal OPGW is compared. Results showed the proposed OPGW with de-icing function is more effi cient and safer.