Conference article

Investigation of Wave Farm Electrical Network Configurations

Fergus Sharkey
Dublin Institute of Technology, Dublin, Ireland \ ESB International, Dublin, Ireland

Michael Conlon
Dublin Institute of Technology, Dublin, Ireland

Kevin Gaughan
Dublin Institute of Technology, Dublin, Ireland

Download articlehttp://dx.doi.org/10.3384/ecp110572222

Published in: World Renewable Energy Congress - Sweden; 8-13 May; 2011; Linköping; Sweden

Linköping Electronic Conference Proceedings 57:11, p. 2222-2229

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Published: 2011-11-03

ISBN: 978-91-7393-070-3

ISSN: 1650-3686 (print), 1650-3740 (online)

Abstract

Wave Energy Converters (WECs) have been in development for a number of decades and some devices are now close to becoming a commercial reality. As such; pilot projects are being developed; particularly in the UK and Ireland; to deploy WECs on a pre-commercial array scale. There is little experience in the wave energy or utility industry of designing and installing electrical networks for WEC arrays with the closest comparison being offshore wind farms. There are some key features of WECs which will ultimately dictate that the electrical configuration differs from that of offshore wind farms.

This paper investigates the potential representative electrical network configurations for small (10MW); medium (40MW) and large scale (150MW) ‘wave farms’ in order to establish a development path for such projects. The configurations are evaluated for efficiency (power loss); redundancy and short circuit levels. Key interfaces in the electrical infrastructure are identified and discussed. This paper also identifies the key differences between offshore wind farm electrical networks.

Keywords

Wave Energy; Electrical Network; Array

References

[1] Offshore Renewable Energy Development Plan 2010 - http://www.dcenr.gov.ie/

[2] UK Renewable Energy Strategy 2009 – www.decc.gov.uk

[3] Equimar Deliverable 5.1 2009 – http://www.equimar.org/

[4] M. Kenny. Electrical Connection Issues for Wave Energy Arrays. Masters Thesis; University College Cork; 2010.

[5] A. Kiprakis; A Nambiar; D. Forehand; A Wallace. Modelling Arrays of Wave Energy Converters Connected to Weak Rural Electrical Networks. International Conference on Sustainable Power Generation and Supply; 2009

[6] Czech; B.; Bauer; P.; Polinder; H.; Korondi; P. Modeling and simulating an Archimedes Wave Swing park in steady state conditions. 13th European Conference on Power Electronics and Applications; 2009.

[7] M. Molinas; O. Skjervheim; B. Sorby; P. Andreasen; S. Lundberg; T. Undeland. Power Smoothing by Aggregation of Wave Energy Converters for Minimizing Electrical Energy Storage Requirements. 7th European Wave and Tidal Energy Conference; 2007.

[8] T. Ahmed; A. Zobaa. Offshore power conditioning system connecting arrays of wave energy converters to the electric power grid. 8th International Conference on Advances in Power System Control; Operation and Management; 2009.

[9] M. Santos; D. Ben Haim; F. Salcedo; J. Villate; Y. Torre-Enciso. Grid Integration of Wave Energy Farms: Basque Country Study. 3rd International Conference on Ocean Energy; 2010

[10] D. O’Sullivan; G. Dalton. Challenges in the Grid Connection of Wave Energy Devices. 8th European Wave and Tidal Energy Conference; Uppsala; Sweden; 2009

[11] S. Breton; G. Moe. Status; Plans and Technologies for Offshore Wind Turbines in Europe and North America. Renewable Energy; 2009. Pg. 646-654

[12] J. Twidell and G. Gaudiosi – Offshore Wind Power. Multi Science Publishing; 2007

[13] H. Landsverk; O. Granhuag; P. Skryten; S. Rafoss. 36kV Vacuum Circuit Breaker Panel - The Perfect Switchgear for Wind. 20th International Conference on Electricity Distribution; Prague; Cezch Republic 2009

[14] J. Yang; J. O’Reilly; J. Fletcher. Redundancy Analysis of Offshore Wind Farm Collection and Transmission Systems. International Conference on Sustainable Power Generation and Supply 2009

[15] R. Green; N. Vasilakos. Economics of Offshore Wind. Energy Policy; 2010. Pg. 1-7

[16] W. Dick. ‘Wave Energy Converter’. U.S. Patent Number 6857266

[17] J. Fitzgerald. Position Mooring of Wave Energy Converters. PhD Thesis; Chalmers University; Sweden. 2009 – pp 36

[18] C Fitzgerald; G. Thomas. A Preliminary Study on the Optimal Performance of an Array of Wave Power Devices. 7th European Wave and Tidal Energy Conference; 2007.

[19] P. Ricci; J-B Saulnier; A. Falcao. Point Absorber Arrays: A Configuration Study off the Portuguese West Coast. 7th European Wave and Tidal Energy Conference; 2007.

[20] ABB – Cables for Offshore Wind Farms. www.abb.com

[21] C. Moore. BICC Electrical Cables Handbook 3rd Edition. Blackwell 1997.

[22] P. Karaliolios; A. Ishchenko; E. Coster; J. Myrzik; W. Kling. Overview of Short-Circuit Contribution of Various Distributed Generators on the Distribution Network.

[23] Renewable UK – Wind Turbine Safety Rules. http://www.bwea.com/safety/safety_rules.html

[24] UK National Grid – The Electricity Transmission Safety Rules 3rd Edition. http://www.nationalgrid.com/

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