Predictability of the Power Output of Three Wave Energy Technologies in the Danish North Sea

Julia Fernandez Chozas, N. E. Helstrup Jensen, H. C. Sørensen, Jens Peter Kofoed, Alina Kristin Kabuth

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Abstract

The paper addresses an important challenge ahead the integration of the electricity generated by wave energy conversion technologies into the electric grid. Particularly, it looks into the role of wave energy within the day-ahead electricity market. For that the predictability of the theoretical power outputs of three wave energy technologies in the Danish North Sea are examined. The simultaneous and co-located forecast and buoy-measured wave parameters at Hanstholm, Denmark, during a non-consecutive autumn and winter 3-month period form the basis of the investigation.

The objective of the study is to provide an indication on the accuracy of the forecast of i) wave parameters, ii) the normalised theoretical power productions from each of the selected technologies (Pelamis, Wave Dragon and Wavestar), and iii) the normalised theoretical power production of a combination of the three devices, during a very energetic time period.

Results show that for the 12 to 36 hours time horizon forecast, the accuracy in the predictions (in terms of scatter index) of the significant wave height, zero crossing period and wave power are 22%, 11% and 68%, respectively; and the accuracy in the predictions of the normalised theoretical power outputs of Pelamis, Wave Dragon and Wavestar are 44%, 52% and 62%, respectively. The best compromise between forecast accuracy and mean power production results when considering the combined production of the three devices.
Original languageEnglish
Title of host publication9th ewtec 2011 : Proceedings of the 9th European Wave and Tidal Conference, Southampton, UK, 5th-9th September 2011
EditorsAbuBakr S. Bahaj
Number of pages10
PublisherUniversity of Southampton
Publication date2011
Publication statusPublished - 2011
EventThe 9th European Wave and Tidal Energy Conference : EWTEC 2011 - Southampton, United Kingdom
Duration: 5 Sep 20119 Sep 2011

Conference

ConferenceThe 9th European Wave and Tidal Energy Conference : EWTEC 2011
CountryUnited Kingdom
CitySouthampton
Period05/09/201109/09/2011

Bibliographical note

Published on a cd.

Keywords

  • Pelamis
  • Wave Dragon
  • Wavestar
  • Denmark
  • North Sea
  • Hanstholm
  • Electricity Market
  • Grid Integration
  • Power Output
  • Predictability
  • Wave Energy

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  • Projects

    Structural design of wave energy devices

    Kofoed, J. P., Frigaard, P., Sørensen, J. D., Pedersen, J. K., Lu, K., Sørensen, J. T., Bingham, H., Ferreira, C. B., Zanuttigh, B., Estefan, S. F., Nielsen, K., Brito-Melo, A., Sterndorff, M., Ingram, D. & Bard, J.

    01/01/201031/12/2014

    Project: Research

    Cite this

    Chozas, J. F., Jensen, N. E. H., Sørensen, H. C., Kofoed, J. P., & Kabuth, A. K. (2011). Predictability of the Power Output of Three Wave Energy Technologies in the Danish North Sea. In A. S. Bahaj (Ed.), 9th ewtec 2011: Proceedings of the 9th European Wave and Tidal Conference, Southampton, UK, 5th-9th September 2011 University of Southampton.