No Cover Image

Journal article 36 views 5 downloads

A comparison of platform and sea-bed mounted flow measurement instrumentation for SME PLAT-I

Carwyn Frost, Michael Togneri Orcid Logo, Penny Jeffcoate, Thomas Lake Orcid Logo, Cuan Boake, Ralf Starzmann, Alison Williams Orcid Logo

International Marine Energy Journal, Volume: 5, Issue: 2, Pages: 195 - 200

Swansea University Authors: Michael Togneri Orcid Logo, Thomas Lake Orcid Logo, Alison Williams Orcid Logo

  • 61583.pdf

    PDF | Version of Record

    This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 licence

    Download (627.64KB)

Abstract

Tidal resource assessment for the characterisation of turbine performance or Annual Energy Prediction currently uses the method of bins as recommended by international standards. An alternative method is proposed in this paper and applied to the Sustainable Marine Energy PLAT-I deployment in Connel...

Full description

Published in: International Marine Energy Journal
ISSN: 2631-5548
Published: European Wave and Tidal Energy Conference 2022
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa61583
Tags: Add Tag
No Tags, Be the first to tag this record!
Abstract: Tidal resource assessment for the characterisation of turbine performance or Annual Energy Prediction currently uses the method of bins as recommended by international standards. An alternative method is proposed in this paper and applied to the Sustainable Marine Energy PLAT-I deployment in Connel Sound, Scotland. This method may be suitable for tidal turbines which operate from the surface. Three instrumentation types are used in this work, a bed-mounted Acoustic Doppler Profiler (ADP), and platform-mounted Acoustic Doppler Velocimeter (ADV) and Electromagnetic Current Meter (ECM). By comparing the resource characteristics from these three sources, a comparison of their velocity magnitudes and turbulence characteristics is made, demonstrating the difference between methodologies. It was found that the ADP evaluated using the method of bins produced a more conservative velocity distribution, in comparison to the ADV and ECM. Consequently, a representative AEP showed a difference of 3.8kWh (50% of ADP total) for the month of data collected. When comparing the Turbulence Intensity between devices, the ADP and ECM had similar metrics whilst the ADV had up to 14% higher values. The significance of these differences requires further work comparing them to the SME PLAT-I turbines power output to ascertain which best represents the onset flow experienced by the turbine and if there is a correlation between power performance and turbulence intensity.
Keywords: Acoustic Doppler Instrumentation, Tidal Resource Assessment, Turbulence, Tidal Stream Turbines, Device Deployment
College: Faculty of Science and Engineering
Funders: This work was supported in part by the EPSRC under SURFTEC project, EP/N02057X/1.
Issue: 2
Start Page: 195
End Page: 200