Grounding Faults in Series-Connected-Based Offshore Wind Farms: DC Link Current Control

Gaopeng Guo; Kunpeng Zha; Yuefeng Yang; Fan Zhang; Jiaxin Wang; Weikun Xie

doi:10.17775/CSEEJPES.2021.08190

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Grounding Faults in Series-Connected-Based Offshore Wind Farms: DC Link Current Control

Regular Papers | 更新时间：2026-10-16

- Grounding Faults in Series-Connected-Based Offshore Wind Farms: DC Link Current Control
- CSEE Journal of Power and Energy Systems Vol. 11, Issue 5, Pages: 2128-2136(2025)
- 作者机构：
  
  1. Beijing DC T&D Engineering Technology Research Center (China EPRI Electric Power Engineering Co. Ltd.),Beijing,China
  2. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University,Beijing,China
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2021.08190
  CLC：
- Published：01 September 2025
- 稿件说明：
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Gaopeng Guo, Kunpeng Zha, Yuefeng Yang, et al. Grounding Faults in Series-Connected-Based Offshore Wind Farms: DC Link Current Control[J]. CSEE Journal of Power and Energy Systems, 2025, 11(5): 2128-2136.
DOI：

Gaopeng Guo, Kunpeng Zha, Yuefeng Yang, et al. Grounding Faults in Series-Connected-Based Offshore Wind Farms: DC Link Current Control[J]. CSEE Journal of Power and Energy Systems, 2025, 11(5): 2128-2136. DOI： 10.17775/CSEEJPES.2021.08190.

摘要

Abstract

In series-connected-based offshore wind farms (SC-OWFs)

the bulky offshore platform

step-up transformer

and high voltage and large-scale converters can be eliminated. In SC-OWFs

grounding fault is an inevitable issue. In this study

the mathematical model of DC link in SC-OWFs is established. On this basis

this paper reveals characteristic of grounding faults in SC-OWFs and proposes a DC link current control strategy

consisting of feedback and feedforward control. Based on DC link current control and protection method

faulty part isolation from SC-OWF can be realized

and unfaulty part will operate normally. Finally

simulation and experimental results prove feasibility of the proposed DC control strategy and fault current calculation method.

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