testing a schottel instream turbine on a pre · pdf filetesting a schottel instream turbine on...

Infrastructure Access Report

Infrastructure: EMEC Nursery Tidal Test Site

User-Project: FlowSIT

Testing a SCHOTTEL INSTREAM TURBINE on a pre-commercial Submerged Floating Platform

SCHOTTEL HYDRO GmbH

Marine Renewables Infrastructure Network

Status: Final Version: <<01>> Date: 31-Aug-2015

EC FP7 “Capacities” Specific Programme Research Infrastructure Action

Infrastructure Access Report: FlowSIT

Rev. <<01>>, 31-Aug-2015 of 15

ABOUT MARINET MARINET (Marine Renewables Infrastructure Network for emerging Energy Technologies) is an EC-funded network of research centres and organisations that are working together to accelerate the development of marine renewable energy - wave, tidal & offshore-wind. The initiative is funded through the EC's Seventh Framework Programme (FP7) and runs for four years until 2015. The network of 29 partners with 42 specialist marine research facilities is spread across 11 EU countries and 1 International Cooperation Partner Country (Brazil). MARINET offers periods of free-of-charge access to test facilities at a range of world-class research centres. Companies and research groups can avail of this Transnational Access (TA) to test devices at any scale in areas such as wave energy, tidal energy, offshore-wind energy and environmental data or to conduct tests on cross-cutting areas such as power take-off systems, grid integration, materials or moorings. In total, over 700 weeks of access is available to an estimated 300 projects and 800 external users, with at least four calls for access applications over the 4-year initiative. MARINET partners are also working to implement common standards for testing in order to streamline the development process, conducting research to improve testing capabilities across the network, providing training at various facilities in the network in order to enhance personnel expertise and organising industry networking events in order to facilitate partnerships and knowledge exchange. The aim of the initiative is to streamline the capabilities of test infrastructures in order to enhance their impact and accelerate the commercialisation of marine renewable energy. See www.fp7-marinet.eu for more details. Partners

Ireland University College Cork, HMRC (UCC_HMRC)

Coordinator

Sustainable Energy Authority of Ireland (SEAI_OEDU)

Denmark Aalborg Universitet (AAU)

Danmarks Tekniske Universitet (RISOE)

France Ecole Centrale de Nantes (ECN)

Institut Français de Recherche Pour l'Exploitation de la Mer (IFREMER)

United Kingdom National Renewable Energy Centre Ltd. (NAREC)

The University of Exeter (UNEXE)

European Marine Energy Centre Ltd. (EMEC)

University of Strathclyde (UNI_STRATH)

The University of Edinburgh (UEDIN)

Queen’s University Belfast (QUB)

Plymouth University(PU)

Spain Ente Vasco de la Energía (EVE)

Tecnalia Research & Innovation Foundation (TECNALIA)

Belgium 1-Tech (1_TECH)

Netherlands Stichting Tidal Testing Centre (TTC)

Stichting Energieonderzoek Centrum Nederland (ECNeth)

Germany Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V (Fh_IWES)

Gottfried Wilhelm Leibniz Universität Hannover (LUH)

Universitaet Stuttgart (USTUTT)

Portugal Wave Energy Centre – Centro de Energia das Ondas (WavEC)

Italy Università degli Studi di Firenze (UNIFI-CRIACIV)

Università degli Studi di Firenze (UNIFI-PIN)

Università degli Studi della Tuscia (UNI_TUS)

Consiglio Nazionale delle Ricerche (CNR-INSEAN)

Brazil Instituto de Pesquisas Tecnológicas do Estado de São Paulo S.A. (IPT)

Norway Sintef Energi AS (SINTEF)

Norges Teknisk-Naturvitenskapelige Universitet (NTNU)

http://www.fp7-marinet.eu/


Rev. <<01>>, 31-Aug-2015 of 15

DOCUMENT INFORMATION Title Testing a SCHOTTEL INSTREAM TURBINE on a pre-commercial Submerged Floating

Platform Distribution Public Document Reference MARINET-TA1-FlowSIT User-Group Leader, Lead Author

Ralf Starzmann SCHOTTEL Mainzer Straße 99 D - 56322 Spay, Germany

User-Group Members, Contributing Authors

Fabrizio Fiore Sustainable Marine Energy Ltd

Infrastructure Accessed: EMEC Nursery Tidal Test Site Infrastructure Manager (or Main Contact)

Matthew Finn

REVISION HISTORY Rev

. Date Description Prepared by

(Name) Approved By Infrastructure

Manager

Status (Draft/Final)

01 20/08/2015 First Draft Ralf Starzmann Matthew Finn Draft 02 21/08/2015 Second Draft Ralf Starzmann Matthew Finn Final


Rev. <<01>>, 31-Aug-2015 of 15

ABOUT THIS REPORT One of the requirements of the EC in enabling a user group to benefit from free-of-charge access to an infrastructure is that the user group must be entitled to disseminate the foreground (information and results) that they have generated under the project in order to progress the state-of-the-art of the sector. Notwithstanding this, the EC also state that dissemination activities shall be compatible with the protection of intellectual property rights, confidentiality obligations and the legitimate interests of the owner(s) of the foreground. The aim of this report is therefore to meet the first requirement of publicly disseminating the knowledge generated through this MARINET infrastructure access project in an accessible format in order to:

• progress the state-of-the-art • publicise resulting progress made for the technology/industry • provide evidence of progress made along the Structured Development Plan • provide due diligence material for potential future investment and financing • share lessons learned • avoid potential future replication by others • provide opportunities for future collaboration • etc.

In some cases, the user group may wish to protect some of this information which they deem commercially sensitive, and so may choose to present results in a normalised (non-dimensional) format or withhold certain design data – this is acceptable and allowed for in the second requirement outlined above.

ACKNOWLEDGEMENT The work described in this publication has received support from MARINET, a European Community - Research Infrastructure Action under the FP7 “Capacities” Specific Programme.

LEGAL DISCLAIMER The views expressed, and responsibility for the content of this publication, lie solely with the authors. The European Commission is not liable for any use that may be made of the information contained herein. This work may rely on data from sources external to the MARINET project Consortium. Members of the Consortium do not accept liability for loss or damage suffered by any third party as a result of errors or inaccuracies in such data. The information in this document is provided “as is” and no guarantee or warranty is given that the information is fit for any particular purpose. The user thereof uses the information at its sole risk and neither the European Commission nor any member of the MARINET Consortium is liable for any use that may be made of the information.


Rev. <<01>>, 31-Aug-2015 of 15

EXECUTIVE SUMMARY Within this MARINET project we deployed the metocean survey buoy DataFish, developed by North Sea Systems, at the EMEC tidal site. The buoy housed a bottom-mounted Teledyne Workhorse Monitor, an ADCP sensor whose purpose was to measure the tidal flow magnitude and direction during this deployment. Additional parameters were also monitored, such as the GPS position of the DataFish, the wind speed and direction, the tension acting on the mooring tether, and the pitch, roll and heading of the buoy. Deployment was conducted on 27/07/15 by local marine contractors Leask Marine. Conditions on the day were temp 15⁰, wind speed 5-10kts, seastate short wind chop 0.5m. The time line is as follows:

• Towed to Kirkwall Harbour on trailer. • Lifted in to water by M/V Uskmoor and tow line connected. • Towed to sheltered location north of Open Hydro installation at EMEC. • Datafish brought alongside Uskmoor, mooring line connected, towline released, DF streamed astern. • Vessel end of mooring line connected to clump weight and a separate endless line reeved through master

link on clump with one end connected to A-frame and other to deck winch through a frame sheave block. • Clump weight over boarded at stern. • DF was towed to drop position streamed astern on its mooring line. • Clump lowered to position on seabed and endless line retrieved. • Datafish clump deployed at 59˚ 09.216’N 002˚ 49.902’W.

Due to some operational difficulties, DataFish had to be recovered in the afternoon of the 28th July 2015. The data collected covers a timeframe of ~13 hours.

CONTENTS

1 INTRODUCTION & BACKGROUND ...................................................................................................................6

1.1 INTRODUCTION .................................................................................................................................................... 6 1.2 DEVELOPMENT SO FAR .......................................................................................................................................... 6 1.2.1 Stage Gate Progress .................................................................................................................................... 6

2 OUTLINE OF WORK CARRIED OUT ...................................................................................................................6

2.1 SETUP ................................................................................................................................................................. 6 2.2 TESTS ................................................................................................................................................................. 9 2.2.1 Test Plan ...................................................................................................................................................... 9

2.3 RESULTS ............................................................................................................................................................ 10 2.4 ANALYSIS & CONCLUSIONS................................................................................................................................... 13

3 MAIN LEARNING OUTCOMES ....................................................................................................................... 13

3.1 PROGRESS MADE ............................................................................................................................................... 13 3.1.1 Progress Made: For This User-Group or Technology ................................................................................. 13

4 FURTHER INFORMATION .............................................................................................................................. 14

4.1 WEBSITE & SOCIAL MEDIA ................................................................................................................................... 14

5 APPENDICES ................................................................................................................................................ 14

5.1 STAGE DEVELOPMENT SUMMARY TABLE ................................................................................................................ 14


Rev. <<01>>, 31-Aug-2015 of 15

1 INTRODUCTION & BACKGROUND

1.1 INTRODUCTION The original plan, within this MARINET project was to deploy the first PLAT-O platform at the EMEC site. Due to delays, we instead resolved to deploy the metocean survey buoy DataFish to gather more accurate tidal flow data, which would help us to better understand what the optimal PLAT-O position and orientation would be, and what environmental conditions the platform would be subjected to. A subsequent PLAT-O array installation is also planned, making necessary to understand how the tidal flow behaves in an extended area around the first deployment location. Therefore more ADCP measurements, to be carried out in several locations at the EMEC site, would provide a better understanding of what the optimum position for the array would be. The DataFish, collecting data from the surface, is able to provide real time information about the tidal flow, sending it via the GSM network. It also provides the option of using radio frequencies to get the live data. This is a great benefit when it comes to planning next deployments. The data processing can start long before the buoy is retrieved from the current location, thus speeding up the process of trying to understand where the position of the next deployment should be.

1.2 DEVELOPMENT SO FAR

1.2.1 Stage Gate Progress Previously completed: Planned for this project:

STAGE GATE CRITERIA Status Stage 1 – Concept Validation • Gathering tidal flow magnitude and direction from numerical simulations in the deployment area • Gathering tidal flow magnitude and direction from previous ADCP surveys in the deployment area

• Determining initial optimal array deployment locations

Stage 2 – Design Validation • Gathering tidal flow magnitude and direction from an ADCP survey in the exact initial planned deployment locations

• Determining final optimal deployment locations and devices orientations

2 OUTLINE OF WORK CARRIED OUT

2.1 SETUP Datafish was deployed at the Fall of Warness shortly after midday on the 27th July 2015, at 59˚09.659’N 002˚50.215’W It was then retrieved on the 28th July 2015. We received data from the Datalogger from 22:14:58 GMT on the 27th July to 11:09:54 GMT on the 28th July 2015. After towing the DataFish to site, the towing bridle was secured to the buoy. The mooring tether was then connected to the buoy and the clump weight. The clump weight was then lowered on the seabed using the winch on the M/V Uskmoor, thus completing the deployment.


Rev. <<01>>, 31-Aug-2015 of 15

Figure 1 – Getting the clump weight ready for deployment

Figure 2 – Datafish successfully deployed

Figure 3 – Towing Datafish to the deployment site


Rev. <<01>>, 31-Aug-2015 of 15

Figure 4 – Securing Datafish tow-line and connect the buoy to the mooring line


Rev. <<01>>, 31-Aug-2015 of 15

2.2 TESTS

2.2.1 Test Plan

Week

1 2 3 4 5 6 7 8

Numerical simulations analysis

Past ADCP surveys analysis

Test plan preparation

Setting up DataFish and getting it ready for deployment

DataFish deployment

DataFish retrieval

Data post-processing

DataFish survey report preparation

Table 1 – Test Plan


Rev. <<01>>, 31-Aug-2015 of 15

2.3 RESULTS In Figure 5 we can see the main outcomes of the survey, which are the flow magnitude and direction observed over the 13 hours during which the ADCP was recording. In Figure 6 we can see the history of the position of the DataFish, as provided by the GPS system. In Figure 7 the motions (pitch, roll and heading) of the DataFish are shown. In Figure 8 the history of the mooring tether tension is represented.

Figure 5 – ADCP Flow Magnitude and Direction Measurements


Rev. <<01>>, 31-Aug-2015 of 15

Figure 6 – DataFish GPS Position


Rev. <<01>>, 31-Aug-2015 of 15

Figure 7 – DataFish Motions


Rev. <<01>>, 31-Aug-2015 of 15

Figure 8 – DataFish Mooring Tether Tension

2.4 ANALYSIS & CONCLUSIONS From the data collected we can conclude that:

• The average flow direction during the ebb tide is 335˚, whilst the average flow direction during the flood tide is 160˚. The difference between the two directions is then 175˚.

• The ebb tide presents higher peaks of flow magnitude. The decision would then likely be to align the PLAT-O turbines along the ebb average direction, thus leaving them 5˚ off-axis when the tide is flooding.

3 MAIN LEARNING OUTCOMES

3.1 PROGRESS MADE

3.1.1 Progress Made: For This User-Group or Technology We have now a better understanding of what the main directions of ebb and flood tides should be in the first PLAT-O deployment location. Also, the data indicates that we should consider optimising the power production during the ebb tide.

3.1.1.1 Next Steps for Research or Staged Development Plan – Exit/Change & Retest/Proceed? To have a complete understanding of what the tidal flow is going to be over the whole tidal cycle, and to obtain absolute confidence on the positions and orientations of the PLAT-O array devices, we need to complete the test programme and process all the data, as stated in Table 1.


Rev. <<01>>, 31-Aug-2015 of 15

4 FURTHER INFORMATION

4.1 WEBSITE & SOCIAL MEDIA Website: www.schottel.de Twitter: https://twitter.com/schottel_hydro

5 APPENDICES

5.1 STAGE DEVELOPMENT SUMMARY TABLE The table following offers an overview of the test programmes recommended by IEA-OES for each Technology Readiness Level. This is only offered as a guide and is in no way extensive of the full test programme that should be committed to at each TRL.


Rev. <<01>>, 31-Aug-2015 of 15

testing a schottel instream turbine on a pre · pdf filetesting a schottel instream turbine on...

Documents