Control Interaction Modeling and Analysis of Grid-Forming Battery Energy Storage System for Offshore Wind Power Plant

Fangzhou Zhao, Xiongfei Wang, Zichao Zhou, Lennart Harnefors, Jan R. Svensson, Lukasz Hubert Kocewiak, Mikkel Peter Sidoroff Gryning

Research output: Contribution to journalJournal articleResearchpeer-review

9 Citations (Scopus)

Abstract

With the increasing deployment of offshore wind power plants (WPPs), the grid-forming (GFM) battery energy storage system (BESS) has recently emerged as an attractive solution to improve the dynamic performances of WPPs. However, the control interactions of the GFM-BESS and offshore WPP, under different grid strengths, tend to complicate the controller-parameter tuning. This paper presents a modeling method for analyzing control interactions of offshore WPP and GFM-BESS, which sheds clear insights into the critical controller parameters to the system dynamics. Differing from conventional methods, a frequency-domain model of GFM-BESS, obtained by taking the Laplace transform of the corresponding state-space model, is developed first. This allows the impedance model of offshore WPP, including a black-box model of long transmission cable, to be flexibly integrated. Based on the model, both closed-loop transfer-function and pole-based dynamic analyses are then performed. Electromagnetic transient simulations corroborate the effectiveness of the model and analysis.

Original languageEnglish
JournalIEEE Transactions on Power Systems
Volume37
Issue number1
Pages (from-to)497-507
Number of pages11
ISSN0885-8950
DOIs
Publication statusPublished - 2022

Bibliographical note

Publisher Copyright:
IEEE

Keywords

  • battery energy storage system (BESS)
  • control interaction
  • grid-forming
  • offshore wind power plant (WPP)

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