ADSS光缆“三跨”解决方案探讨

Discussion on the Solution of ADSS Optical Cable Problems About Spanning Expressway, High-speed Railway and HV Transmission Line

根据成都地区ADSS光缆多年实际运行的经验和特点,通过全面分析高电磁场环境下ADSS光缆遭受电腐蚀损伤的原理,重点对存在重大安全隐患的"三跨"(跨越高速公路、高速铁路和重要输电线路)位置防电腐蚀解决方案进行深入研究和试点探索,提出加装绝缘子和迁改光缆优化路由的技术实施路线,达到提高ADSS光缆抗电腐蚀能力、降低光缆断线事故隐患、保障社会公共安全的目的,对今后在220 kV高压输电线路"三跨"位置的ADSS光缆线路工程设计和安全可靠运行具有借鉴意义。

According to the practical operation experience and characteristics of ADSS optical cable in Chengdu area for many years, the principle of electrical corrosion damage of ADSS optical cable in high electromagnetic field environment is analyzed comprehensively, and the solution of electric corrosion prevention for three spans（spanning expressways, high-speed railways and high-voltage transmission lines） with major safety hazards is emphasized. The technical implementation route of adding insulators and removing optical cables to optimize routing is put forward in order to improve the anti-corrosion ability of ADSS optical cables, and to reduce the hidden danger of cable breakage accidents and ensure public safety. The work has reference signifi cance for the design and safety of ADSS optical cables in the ＂three-span＂ position of 220 kV high-voltage transmission lines in the future.