Abstract
Tidal resource assessment for the characterization 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 3.8 kWh (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.
| Original language | English |
|---|---|
| Pages (from-to) | 195-200 |
| Number of pages | 6 |
| Journal | International Marine Energy Journal |
| Volume | 5 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 30 Sept 2022 |
Bibliographical note
Funding Information:This work was supported in part by the EPSRC under SURFTEC project, EP/N02057X/1. C. Frost is at Queen’s University Belfast (e-mail: [email protected]) M. Togneri, T. Lake and A. Williams are at Swansea University. P. Jeffcoate is at Sustainable Marine Energy Ltd. C. Boake is at Applied Renewables Research Ltd. R. Starzmann is at Schottel Hydro GmbH. Digital Object Identifier https://doi.org/10.36688/imej.5.195-200
Publisher Copyright:
© 2022, European Wave and Tidal Energy Conference. All rights reserved.
Keywords
- Acoustic Doppler Instrumentation
- Tidal Resource Assessment
- Turbulence
ASJC Scopus subject areas
- Oceanography
- Renewable Energy, Sustainability and the Environment
- Ocean Engineering
Access to Document
- A comparison of platform and sea-bed mounted flow measurement instrumentation for SME PLAT-I
Copyright 2022 the authors. This is an open access article published under a Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.