Enhanced Kalman filtering for a 2D CFD NS wind farm flow model

B. M. Doekemeijer, J. W. Van Wingerden, S. Boersma, L. Y. Pao

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

9 Citations (Scopus)
20 Downloads (Pure)

Abstract

Wind turbines are often grouped together for financial reasons, but due to wake development this usually results in decreased turbine lifetimes and power capture, and thereby an increased levelized cost of energy (LCOE). Wind farm control aims to minimize this cost by operating turbines at their optimal control settings. Most state-of-the-art control algorithms are open-loop and rely on low fidelity, static flow models. Closed-loop control relying on a dynamic model and state observer has real potential to further decrease wind's LCOE, but is often too computationally expensive for practical use. In this paper two time-efficient Kalman filter (KF) variants are outlined incorporating the medium fidelity, dynamic flow model "WindFarmSimulator" (WFSim). This model relies on a discretized set of Navier-Stokes equations in two dimensions to predict the flow in wind farms at low computational cost. The filters implemented are an Ensemble KF and an Approximate KF. Simulations in which a high fidelity simulation model represents the true wind farm show that these filters are 101 - 102 times faster than a regular KF with comparable or better performance, correcting for wake dynamics that are not modeled in WFSim (noticeably, wake meandering and turbine hub effects). This is a first big step towards real-time closed-loop control for wind farms.

Original languageEnglish
Title of host publicationJournal of Physics - Conference Series
Subtitle of host publicationTORQUE 2016: The Science of Making Torque from Wind
Place of PublicationBristol, UK
PublisherIOP Publishing
Number of pages11
Volume753
EditionD. Control & Supporting Technologies
DOIs
Publication statusPublished - 2016
EventTORQUE 2016: 6th International Conference "The Science of Making Torque from Wind" - Technische Universität München (TUM), Campus Garching, Munich, Germany
Duration: 5 Oct 20167 Oct 2016
https://www.events.tum.de/?sub=29

Publication series

NameJournal of Physics - Conference Series
PublisherIOP Publishing
Volume753
ISSN (Print)1742-6588
ISSN (Electronic)1742-6596

Conference

ConferenceTORQUE 2016: 6th International Conference "The Science of Making Torque from Wind"
CountryGermany
CityMunich
Period5/10/167/10/16
Internet address

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  • Cite this

    Doekemeijer, B. M., Van Wingerden, J. W., Boersma, S., & Pao, L. Y. (2016). Enhanced Kalman filtering for a 2D CFD NS wind farm flow model. In Journal of Physics - Conference Series: TORQUE 2016: The Science of Making Torque from Wind (D. Control & Supporting Technologies ed., Vol. 753). [052015] (Journal of Physics - Conference Series; Vol. 753). IOP Publishing. https://doi.org/10.1088/1742-6596/753/5/052015