中国电力 ›› 2020, Vol. 53 ›› Issue (7): 55-71.DOI: 10.11930/j.issn.1004-9649.202002108

• 远海风电送出关键技术专栏 • 上一篇    下一篇

大规模海上风电柔性直流输电技术应用现状和展望

刘卫东1, 李奇南2,3, 王轩2,3, 张帆2,3, 李兰芳2,4, 燕翚2,3   

  1. 1. 鲁能新能源(集团)有限公司,北京 100020;
    2. 南瑞集团(国网电力科学研究院)有限公司,江苏 南京 211106;
    3. 北京市直流输配电工程技术研究中心(中电普瑞电力工程有限公司),北京 102200;
    4. 中电普瑞科技有限公司,北京 102200
  • 收稿日期:2020-02-21 修回日期:2020-03-16 发布日期:2020-07-05
  • 作者简介:刘卫东(1967—),男,高级工程师,从事新能源发电与并网技术研究,E-mail: liuweidong2011@126.com;李奇南(1981—),男,通信作者,博士,从事柔性交、直流输电及新能源并网研究,E-mail: liqinan@sgepri.sgcc.com.cn;王轩(1978—),男,硕士,高级工程师(教授级),从事电力系统和电力电子技术研究,E-mail: wangxuan_power@126.com
  • 基金资助:
    鲁能集团科技项目(大规模海上风电项目远距离柔性直流输电研究)

Application Status and Prospect of VSC-HVDC Technology for Large-Scale Offshore Wind Farms

LIU Weidong1, LI Qinan2,3, WANG Xuan2,3, ZHANG Fan2,3, LI Lanfang2,4, YAN Hui2,3   

  1. 1. Luneng New Energy (Group) Co., Ltd., Beijing 100020, China;
    2. NARI Group Corporation (State Grid Electric Power Research Institute), Nanjing 211106, China;
    3. Beijing DC Transmission and Distribution Engineering Technology Research Center (China-EPRI Electrical Engineering Co., Ltd.), Beijing 102200, China;
    4. China EPRI Science & Technology Co., Ltd., Beijing 102200, China
  • Received:2020-02-21 Revised:2020-03-16 Published:2020-07-05
  • Supported by:
    This work is supported by Science and Technology Project of Luneng Group (Study of Long-Distance VSC-HVDC of Large-scaled Offshore Wind Power Project).

摘要: 海上风电具有风力资源稳定性强、年利用小时数高等特点,随着海上风电机组大型化、投资规模扩大以及建设成本下降,基于柔性直流输电技术的大规模海上风电送出已成为海上风电发展和研究的热点方向。结合国内外典型海上风电柔性直流输电工程,对换流阀、联接变压器、耗能装置、高压直流断路器、海底直流电缆关键电气设备应用现状等进行分析和总结,介绍控制系统构、硬件组成和控制算法研究现状。考虑到海上平台所处的盐雾腐蚀环境,介绍了联接变压器、换流阀的防腐设计和海水冷却系统设计。分析、总结了大规模海上风电的并网技术方案的研究现状,对海上换流站、海上风电场的发展趋势进行展望。

关键词: 海上风电, 柔性直流输电, 防腐蚀设计, 海水冷却, 并网, 应用现状, 展望

Abstract: Due to the strong wind resource stability and high annual utilization hours of offshore wind power, with the increasing capacities of offshore wind turbines, the expansion of investment scale and the reduction of construction costs, VSC-HVDC based large-scale offshore wind power transmission technology has become a popular topic for offshore wind power development and research. Based on typical offshore wind power VSC-HVDC transmission projects, application status of key electrical equipment including converter valves, interface transformers, energy-dissipating devices, HVDC breaker, submarine DC cables have been analyzed and summarized in this paper. In addition, control system structure and hardware configuration as well as control algorithm are introduced. Considering the salt mist corrosion environment where offshore platforms are located, both the anticorrosion design and seawater cooling system design of the interface transformers, converter valves are introduced. The current research status of large-scale offshore wind power grid integration solutions have also been analyzed and summarized. The prospect of offshore converter stations and offshore wind farms has been forecasted.

Key words: offshore wind farms, VSC-HVDC, anticorrosion design, seawater cooling, grid integration, application status, prospect