Control strategy for VSC-MTDC grid connection of offshore wind farms with high penetration of renewable energy integration

ZHANG Yajun; YANG Xingang; BAO Wei; DU Zhaoxin; GAN Huichen; XIAO Huangqing

doi:10.11930/j.issn.1004-9649.202509034

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Control strategy for VSC-MTDC grid connection of offshore wind farms with high penetration of renewable energy integration

更新时间：2026-04-30

- Control strategy for VSC-MTDC grid connection of offshore wind farms with high penetration of renewable energy integration
- Vol. 59, Issue 4, Pages: 127-139(2026)
- 作者机构：
  
  1. 国网上海市电力公司电力科学研究院,上海,200437
  2. 华南理工大学电力学院,广东,广州,510640
- 作者简介：
- 基金信息：
- DOI：10.11930/j.issn.1004-9649.202509034
  CLC：
- Online First：20 April 2026，
  
  Published：2026
- 稿件说明：
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张雅君, 杨心刚, 鲍伟, 杜炤鑫, 甘慧辰, 肖晃庆. 面向高比例新能源接入的海上风电场多端柔直并网控制策略[J]. 中国电力, 2026, 59(4): 127-139.

ZHANG Yajun, YANG Xingang, BAO Wei, et al. Control strategy for VSC-MTDC grid connection of offshore wind farms with high penetration of renewable energy integration[J]. 2026, 59(4): 127-139.
张雅君, 杨心刚, 鲍伟, 杜炤鑫, 甘慧辰, 肖晃庆. 面向高比例新能源接入的海上风电场多端柔直并网控制策略[J]. 中国电力, 2026, 59(4): 127-139. DOI： 10.11930/j.issn.1004-9649.202509034.

ZHANG Yajun, YANG Xingang, BAO Wei, et al. Control strategy for VSC-MTDC grid connection of offshore wind farms with high penetration of renewable energy integration[J]. 2026, 59(4): 127-139. DOI： 10.11930/j.issn.1004-9649.202509034.

摘要

针对高比例新能源接入场景下，海上风电场经多端柔直并网所面临的直流电压动态性能受限、动态功率偏差等问题，提出一种计及异常工况的海上风电场经多端柔直并网主从协调分层控制策略。首先，融合电压裕度与电压下垂控制，基于换流站动态特性提出主辅换流站协调控制方法。其次，提出基于直流功率波动量与换流站调节能力的动态分层控制方法，能在异常扰动下维持有功功率均衡分配。然后，建立换流站动态参与策略及参数整定方法，实现各工况下换流站投运数量的自适应调节，有效抑制换流站动态功率波动，提升直流电压动态调节特性。最后，通过PSCAD/EMTDC仿真平台构建五端海上风电多端柔直仿真系统，验证异常工况下所提控制策略的有效性。

Abstract

To address the challenges of limited DC voltage dynamic performance and dynamic power deviations in grid connection of offshore wind farms via multi-terminal VSC-MTDC systems under high-penetration renewable energy integration scenarios

this paper proposes an abnormal-condition-aware master-slave coordinated hierarchical control strategy to enhance system reliability and stability. First

a coordinated control method for the primary and auxiliary converter stations is developed by integrating voltage margin and voltage droop control schemes

based on the dynamic characteristics of converter stations. Second

a dynamic hierarchical control approach is proposed

incorporating DC power fluctuation and converter station regulation capability

which can maintain the balanced active power distribution under abnormal disturbances. Third

a dynamic participation strategy and parameter tuning methodology for converter stations are established to achieve adaptive adjustment of the number of operational converter under various operating conditions

effectively suppressing the dynamic power fluctuations of converter stations and enhancing the DC voltage dynamic regulation characteristics. Finally

the effectiveness of the proposed control strategy under abnormal operating conditions is validated through a five-terminal offshore wind VSC-MTDC simulation system built on the PSCAD/EMTDC platform.

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references

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