河南电网500kV线路OPGW光缆抗灾能力分析与应对

Analysis on the Disaster Response Capacity of Henan Power 500 kV OPGW Cables

近年来,河南地区数条500 kV线路OPGW光缆遭受了恶劣天气袭击,造成多种形式的损坏,如衰耗增大、断缆等。为总结经验,增强抗灾能力,文章在对近年光缆受损按灾害类型和损坏结果进行统计的基础上,分析了典型的6条光缆受损情况,介绍了各自防范措施。通过比较各种结构材质OPGW光缆的拉断力、熔点、余长等特性,得出铝包钢型的层绞不锈钢管式光缆抗灾能力相对较佳的结论。最后结合河南情况,对省内现役光缆和新架光缆提出了防灾治理的应对措施及建议。

In recent years, several 500 kV OPGW cables of Henan power have suffered from severe weather attacks which caused increasing attenuation, line broken and so on. In order to gain experience and strengthen disaster response capacity, this article analyzed six typical damaged optical cables and introduced their countermeasures each by each, based on the obtained statistics of disaster types and damage results. By comparing various structures and materials of OPGW cable features, such as breaking force, melting point, fiber excess-length, etc., it was concluded that the optical fiber of aluminum-clad-steel type stranded loose stainless steel tube is relatively best. Finally, by considering the situation of Henan, the countermeasures and suggestions on disaster response for OPGW cables being used and to be constructed are mentioned.