Techno-economic Feasibility of a STATCOM with Battery Energy Storage for the Offshore Wind Power Plants

Sanjay K. Chaudhary*, Xiongfei Wang, Dongsheng Yang, Remus Teodorescu, L. Kocewiak, M. P. Sidoroff Gryning, P. Johnson, C. Y. Chen

*Corresponding author

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review


An integrated power converter and battery energy storage system (BESS) has been proposed to meet multi-functional requirements for active and reactive power control and harmonic filtering in large wind power plants (WPPs).
In this paper, first a high-voltage, high MVA static synchronous compensator (STATCOM) based on modular multilevel converters (MMCs) with an integrated BESS system is analyzed from the techno-economic feasibility point of view. Economic benefits of the additional functionalities are quantified based on available market data (and trends) for ancillary services or the least cost option for the mandatory compliance with the relevant Grid Code. Afterwards, its efficacy in achieving different ancillary services to the WPP and to the grid is qualitatively discussed. Their significance to the operation and control of offshore WPPs and their relevance for the market and the grid are evaluated.
Original languageEnglish
Title of host publicationProceedings of CIGRE Symposium Aalborg 2019
Number of pages9
PublisherCIGRE (International Council on Large Electric Systems)
Publication dateJun 2019
Article number142
Publication statusPublished - Jun 2019
EventCIGRE Symposium Aalborg 2019 - Aalborg, Denmark
Duration: 4 Jun 20197 Jun 2019


ConferenceCIGRE Symposium Aalborg 2019


  • Ancillary services
  • Battery energy storage system (BESS)
  • Black start
  • Frequency regulation
  • Harmonic compliance
  • Voltage regulation
  • Wind power plant (WPP)

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