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大规模海上风电多电压等级混合级联直流送出系统
作者:
作者单位:

1.强电磁工程与新技术国家重点实验室(华中科技大学),湖北省武汉市 430074;2.中国能源建设集团广东省电力设计研究院有限公司,广东省广州市 510663

摘要:

海上风电场拥有更加丰富与稳定的风能资源,同时具备适宜大规模开发的优点,发展潜力巨大,是未来风电的主要发展趋势及重要力量。文中总结分析了现有工程和理论研究中涉及的大规模海上风电直流送出拓扑,包括仅采用模块化多电平换流器的柔直换流站系统和二极管整流单元-模块化多电平换流器混合直流系统,归纳了各方案的运行特点。为解决现有方案运行灵活性低、可行性差的问题,提出了一种多电压等级混合级联直流送出系统,从技术性、经济性的角度对方案进行了对比分析。最后,设计了多电压等级混合级联直流送出系统协调控制策略,通过PSCAD/EMTDC仿真分析对并网方案进行了可行性验证。

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基金项目:

新疆维吾尔自治区重点研发项目(2020B02002)

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作者简介:


Multi-voltage Level Hybrid Cascaded HVDC Transmission System for Large-scale Offshore Wind Power
Author:
Affiliation:

1.State Key Laboratory of Advanced Electromagnetic Engineering and Technology (Huazhong University of Science and Technology), Wuhan 430074, China;2.Guangdong Electric Power Design Institute Co., Ltd. of China Energy Engineering Group, Guangzhou 510663, China

Abstract:

Offshore wind farm has more abundant and stable wind energy resources, which is suitable for large-scale development and has great development potential. It is the main development trend and important force of wind power in the future. This paper summarizes and analyzes the high voltage direct current (HVDC) transmission topologies for the large-scale offshore wind power involved in the existing engineering and theoretical researches, including the flexible DC converter station system using only modular multilevel converter and the diode rectifier unit (DRU)-modular multilevel converter (MMC) hybrid HVDC system, and summarizes the operation characteristics of each scheme. In order to solve the problems of low flexibility and poor feasibility of the existing schemes, a multi-voltage level hybrid cascaded HVDC transmission system is proposed, and the schemes are compared and analyzed from the perspective of technology and economy. Finally, the coordinated control strategy of multi-voltage level hybrid cascaded HVDC transmission system is designed, and the feasibility of the grid-integration scheme is verified by PSCAD/EMTDC simulation analysis.

Keywords:

Foundation:
This work is supported Key R&D Projects of Xinjiang Uygur Autonomous Region of China (No. 2020B02002).
引用本文
[1]孟沛彧,向往,邸世民,等.大规模海上风电多电压等级混合级联直流送出系统[J/OL].电力系统自动化,http://doi. org/10.7500/AEPS20210425008.
MENG Peiyu, XIANG Wang, DI Shimin, et al. Multi-voltage Level Hybrid Cascaded HVDC Transmission System for Large-scale Offshore Wind Power[J/OL]. Automation of Electric Power Systems, http://doi. org/10.7500/AEPS20210425008.
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  • 收稿日期:2021-04-25
  • 最后修改日期:2021-09-14
  • 录用日期:2021-08-31
  • 在线发布日期: 2021-09-22
  • 出版日期:
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