海上风电220kV海缆终端登陆技术研究与应用

郭文敢 何康礼 曾东 吴周盛 邓华金 黄福统 张婷

摘 要：海上风电220kV海缆终端登陆时由于近岸段水深较浅，铺缆船无法在近岸段敷设，通常采取长距离浮拖登陆的方法，长距离拖拉敷设效率低、且容易对海缆造成损坏。为提高海上风电220kV海底电缆终端登陆的效率、可靠性、安全性，通过在平板驳上设计配置吊机、布缆机、弯弧架、埋设犁、高压水泵等反向铺缆设备，创新性提出铺缆船浅滩就位后旋转180°，平板驳浅滩海缆反向铺设的技术手段，有效减少了拖拉长度。经在我国南海湛江外罗海域海上风电项目成功应用，显著提高了220kV海缆终端登陆的敷设效率及安全性，对后续海上风电项目海缆敷设具有借鉴意义。

关键词：  海上风电 220kV海底电缆 终端登陆 反向铺设

中图分类号：TM614  文献标识码：A   文章编号：1672-3791（2021）11（a）-0000-00

Research and Application of 220kV Offshore Wind Power

Terminal Landing Technology

GUO Wengan  HE Kangli  ZENG Dong  WU Zhousheng  DENG Huajin  HUANG  Futong  ZHANG Ting

（Guangdong Yuedian Zhanjiang Wind Power Generation Co.， Ltd.， Zhanjiang， Guangdong Province，524030 China）

Abstract：  When landing the 220kV submarine cable terminal of offshore wind power， due to the shallow water depth in the nearshore section， the cable laying ship cannot lay in the nearshore section. The method of long-distance floating towing landing is usually adopted. The long-distance towing laying is inefficient and easy to damage the submarine cable. In order to improve the efficiency， reliability and safety of 220kV submarine cable terminal landing of offshore wind power， through the design and configuration of reverse cable laying equipment such as crane， cable laying machine， curved frame， buried plow and high-pressure water pump on the flat barge， the technical means of reverse cable laying on the flat barge shoal after the cable laying ship is in place is innovatively proposed， which effectively reduces the drag length. The successful application in the offshore wind power project in wailuo sea area of Zhanjiang， South China Sea has significantly improved the laying efficiency and safety of 220kV submarine cable terminal landing， which can be used as a reference for the submarine cable laying of subsequent offshore wind power projects.

Key words： Offshore wind power; 220kV submarine cable; Terminal landing; Reverse laying

220kV海纜在海上风电项目中是联系陆上集控中心和海上升压站的主动脉，220kV海缆具有长度长、质量大等特点。通常近岸段水深较浅，铺缆船无法在近岸段敷设，若采取长距离浮拖登陆，则海缆拖拉施工风险较大[1]。

传统的220kV电缆终端登陆方式，敷设速度慢，沿途摩擦阻力大，敷设时需要很大的牵引力，而牵引力过大，容易造成电缆本体、电缆牵引头损伤[2]，影响电力电缆运行安全可靠性。

为此结合我国南海外罗海域敷缆船特点、海缆路由地质条件、海洋水文环境等客观因素，提出新型海底电缆终端登陆方式，主要采用铺缆船浅滩转头就位后，平板驳浅滩海缆反向铺设的技术手段，有效解决了传统终端登陆效率低、可靠性差等难题。……