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A comparison of platform and sea-bed mounted flow measurement instrumentation for SME PLAT-I
,
Penny Jeffcoate,
Thomas Lake ,
Cuan Boake,
Ralf Starzmann,
Alison Williams
International Marine Energy Journal, Volume: 5, Issue: 2, Pages: 195 - 200
Swansea University Authors:
Michael Togneri , Thomas Lake , Alison Williams
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DOI (Published version): 10.36688/imej.5.195-200
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...
| Published in: | International Marine Energy Journal |
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| ISSN: | 2631-5548 |
| Published: |
European Wave and Tidal Energy Conference
2022
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa61583 |
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| 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. |
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| 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 |