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Overview
\n\nThis repository contains data from an offshore measurement campaign conducted during the installation of the offshore wind farm trianel wind farm borkum II (https://www.trianel-borkumzwei.de/). The wind farm consists of 32 Senvion 6XM152 turbines. The installation took place between August 2019 and May 2020.
\n\nAn offshore wind turbine undergoing installation is interesting from a research point of view for several reasons:
\n\nFor fluid mechanics, closely monitoring offshore wind turbines under wind and wave loading thus compares to a full-scale experiment. Monitoring 32 turbines undergoing installation thus enables the measurement a broad spectrum of different states.
\n\nThe investigation into the data is ongoing, questions and contributions are welcome. The current data release still does not include all data. The dataset will thus be updated again in the future with more data to come. First analytic results can be found here:
\n\nSander, A, Haselsteiner, AF, Barat, K, Janssen, M, Oelker, S, Ohlendorf, J, & Thoben, K. "Relative Motion During Single Blade Installation: Measurements From the North Sea." Proceedings of the ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering. Volume 9: Ocean Renewable Energy. Virtual, Online. August 3–7, 2020. V009T09A069. ASME. <https://doi.org/10.1115/OMAE2020-18935>
\n\nSander, A, Meinhardt, C & Thoben, KD. "Monitoring of Offshore Wind Turbines under Wind and Wave Loading during Installation" Proceedings of the EuroDyn 2020 XI International Conference on Structural Dynamics. Volume 1. Virtual, Online. November 23-26, 2020. <https://generalconferencefiles.s3-eu-west-1.amazonaws.com/eurodyn_2020_ebook_procedings_vol1.pdf>
\n\nRecordings of the conference presentations are available on youtube:
\n\nPhysical Background
\n\n[1]: under installation condition
\n\nExperimental Setup
\n\nSeveral locations were used to record data during the installation of the wind farm. They are listed in the following table:
\n\nOrganization of data
\n\nFor each turbine installation, a separate folder can be found, e.g. turbine-01 for the first and turbine-16 for the 16th turbine. Turbine numbering follows the order of installation.
\n\nDifferent data sources are organized in subfolders for each turbine dataset. Unfortunately, not every data source is available for each turbine. Data sources are roughly sorted into categories. The following table lists these categories:
\n\nThe zenodo data set includes 16 zip archives (for 16 turbines) as well as one zip archive including environmental data. The following lists the folder structure of the turbine-04.zip archive (with most of the data files removed for clarity).
\n\n\u2514\u2500\u2500 turbines\n \u251c\u2500\u2500 turbine-04\n \u2502\u00a0\u00a0 \u251c\u2500\u2500 helihoist-1\n \u2502\u00a0\u00a0 \u2502\u00a0\u00a0 \u2514\u2500\u2500 tom\n \u2502\u00a0\u00a0 \u2502\u00a0\u00a0 \u2514\u2500\u2500 clean\n \u2502\u00a0\u00a0 \u2502\u00a0\u00a0 \u251c\u2500\u2500 turbine-04_helihoist-1_tom_clean_2019-09-01-11-27-17_2019-09-01-11-54-00.csv\n \u2502\u00a0\u00a0 \u2502\u00a0\u00a0 \u251c\u2500\u2500 turbine-04_helihoist-1_tom_clean_2019-09-01-11-54-00_2019-09-01-12-20-44.csv\n \u2502\u00a0\u00a0 \u251c\u2500\u2500 sbitroot\n \u2502\u00a0\u00a0 \u2502\u00a0\u00a0 \u2514\u2500\u2500 tom\n \u2502\u00a0\u00a0 \u2502\u00a0\u00a0 \u2514\u2500\u2500 clean\n \u2502\u00a0\u00a0 \u2502\u00a0\u00a0 \u251c\u2500\u2500 turbine-04_sbitroot_tom_clean_2019-09-07-06-48-53_2019-09-07-07-17-16.csv\n \u2502\u00a0\u00a0 \u2502\u00a0\u00a0 \u251c\u2500\u2500 turbine-04_sbitroot_tom_clean_2019-09-07-07-17-16_2019-09-07-07-45-59.csv\n \u2502\u00a0\u00a0 \u251c\u2500\u2500 towertop\n \u2502\u00a0\u00a0 \u2502\u00a0\u00a0 \u2514\u2500\u2500 tom\n \u2502\u00a0\u00a0 \u2502\u00a0\u00a0 \u2514\u2500\u2500 clean\n \u2502\u00a0\u00a0 \u2502\u00a0\u00a0 \u251c\u2500\u2500 turbine-04_towertop_tom_clean_2000-01-06-18-55-52_2000-01-06-20-30-10.csv\n \u2502\u00a0\u00a0 \u2502\u00a0\u00a0 \u251c\u2500\u2500 turbine-04_towertop_tom_clean_2000-01-06-20-30-11_2000-01-06-22-04-31.csv\n \u2502\u00a0\u00a0 \u251c\u2500\u2500 towertransfer\n \u2502\u00a0\u00a0 \u2502\u00a0\u00a0 \u2514\u2500\u2500 tom\n \u2502\u00a0\u00a0 \u2502\u00a0\u00a0 \u2514\u2500\u2500 clean\n \u2502\u00a0\u00a0 \u2502\u00a0\u00a0 \u251c\u2500\u2500 turbine-04_towertransfer_tom_clean_2019-08-31-03-11-53_2019-08-31-04-00-09.csv\n \u2502\u00a0\u00a0 \u2502\u00a0\u00a0 \u251c\u2500\u2500 turbine-04_towertransfer_tom_clean_2019-08-31-04-00-10_2019-08-31-04-48-19.csv\n \u2502\u00a0\u00a0 \u2514\u2500\u2500 tp\n \u2502\u00a0\u00a0 \u2514\u2500\u2500 tom\n \u2502\u00a0\u00a0 \u2514\u2500\u2500 clean\n \u2502\u00a0\u00a0 \u251c\u2500\u2500 turbine-04_tp_tom_clean_2019-08-31-18-34-45_2019-08-31-19-07-52.csv\n \u2502\u00a0\u00a0 \u251c\u2500\u2500 turbine-04_tp_tom_clean_2019-08-31-19-08-00_2019-08-31-19-40-43.csv\n
\n\nThe following list the contents of the environment.zip archive. Note that again most of the data files have been removed for clarity.
\n\n\u2514\u2500\u2500 environment\n \u00a0\u00a0 \u251c\u2500\u2500 waves\n \u00a0\u00a0 \u2502\u00a0\u00a0 \u2514\u2500\u2500 wmb-sued\n \u00a0\u00a0 \u2502\u00a0\u00a0 \u251c\u2500\u2500 wmb-sued_2019-08-15.csv\n \u00a0\u00a0 \u2502\u00a0\u00a0 \u251c\u2500\u2500 wmb-sued_2019-08-16.csv\n \u00a0\u00a0 \u2502\u00a0\u00a0 \u251c\u2500\u2500 wmb-sued_2019-08-17.csv\n \u00a0\u00a0 \u2514\u2500\u2500 wind\n \u00a0\u00a0 \u2514\u2500\u2500 lidar\n \u00a0\u00a0 \u251c\u2500\u2500 lidar_2019-08-03.csv\n \u00a0\u00a0 \u251c\u2500\u2500 lidar_2019-08-04.csv\n \u00a0\u00a0 \u251c\u2500\u2500 lidar_2019-08-05.csv\n
\n\nTOM data description
\n\nThe abbreviation TOM referes to Tower Oscillation Measurement and the data that was acquired using a specific set of sensor boxes built by university of Bremen for this specific purpose. These Sensor Boxes were initially designed to measure accelerations and GPS tracks of offshore wind turbine towers undergoing installation. During the installation of the wind farm Trianel Windpark Borkum II they were subsequentially used to track the complete installation with a focus on single blade installation
\n\nData from the TOM devices comes as CSV files. The firmware of the boxes was designed, such that data was written into 10 MB sized txt files instead of one large txt file in order to circumvent data corruption due to power loss. However, this leads to a few milliseconds of missing data between log files. Additionally, jitter due to IO-Operations is present in the data as well and data should under all circumstance be resampled befor further analysis.
\n\nParameters provided by the TOM devices are listed in the following:
\n\nLIDAR wind data description
\n\nA Leosphere WindCube LIDAR was mounted on the installation vessel Taillevent to record the atmospheric boundary layer during installation. The data recorded by the lidar was exported as csvs and provided by the vessel operator. The raw data includes the following parameters
\n\nData is resampled to a 1 s return interval.
\n\nwave data description
\n\nWave data was recorded using a waverider wave buoy (DWR-G). The wave rider buoy was located at 54 00' 238'' degree North and 6 26' 553'' degree East. In decimals: 54.0031096 North, 6.4425532 East. Based on the raw data, sea state statistics were derived with a return period of 30 minutes.
\n\nThe data comes as csv, column oriented text files. The first line entails parameter names and units and is commented out by a hashbang (unix commentary). The data is a combination of two different data files as provided by the buoy: \\*.HIS Data Text File (History of Spectrum parameters) and \\*.HIW Data Text File (History of Wave Statistics). This results in the two timestamps in the data file because history of wave statistics data is available immediately after each measurement time period, whereas history of spectrum parameters take approx. 5 minutes to calculate by the buoy and thus have a slightly later time stamp. For actual postprocessing purposes, a third timestamp rounded to full half hour is used. Parameters included in the data files are:
\n\nNote: the m's are moments of the power spectral density S(f).
\n\n\n\n
", "publication_date": "2020-10-27", "publisher": "Zenodo", "references": [ { "reference": "Sander et al. (2020a): RELATIVE MOTION DURING SINGLE BLADE INSTALLATION: MEASUREMENTS FROM THE NORTH SEA in International Conference on Ocean, Offshore and Arctic Engineering, Florida, USA" }, { "reference": "Sander et al. (2020b): MONITORING OF OFFSHORE WIND TURBINES UNDER WAVE AND WIND LOADING DURING INSTALLATION in EuroDyn 2020, Athens, Greece" } ], "related_identifiers": [ { "identifier": "10.1115/OMAE2020-18935", "relation_type": { "id": "isdocumentedby", "title": { "de": "Wird dokumentiert von", "en": "Is documented by" } }, "resource_type": { "id": "publication-conferencepaper", "title": { "de": "Konferenzbeitrag", "en": "Conference paper" } }, "scheme": "doi" } ], "resource_type": { "id": "dataset", "title": { "de": "Datensatz", "en": "Dataset" } }, "rights": [ { "description": { "en": "The Creative Commons Attribution license allows re-distribution and re-use of a licensed work on the condition that the creator is appropriately credited." }, "icon": "cc-by-icon", "id": "cc-by-4.0", "props": { "scheme": "spdx", "url": "https://creativecommons.org/licenses/by/4.0/legalcode" }, "title": { "en": "Creative Commons Attribution 4.0 International" } } ], "subjects": [ { "subject": "Offshore Wind" }, { "subject": "Single Blade Installation" }, { "subject": "Turbine Vibrations" } ], "title": "Oscillations of Offshore Wind Turbines undergoing Installation I: Raw Measurements", "version": "3" }, "parent": { "access": { "owned_by": { "user": 87902 } }, "communities": {}, "id": "4141207", "pids": { "doi": { "client": "datacite", "identifier": "10.5281/zenodo.4141207", "provider": "datacite" } } }, "pids": { "doi": { "client": "datacite", "identifier": "10.5281/zenodo.5009061", "provider": "datacite" }, "oai": { "identifier": "oai:zenodo.org:5009061", "provider": "oai" } }, "revision_id": 2, "stats": { "all_versions": { "data_volume": 4878258314203.0, "downloads": 3767, "unique_downloads": 580, "unique_views": 1658, "views": 1775 }, "this_version": { "data_volume": 3435882754925.0, "downloads": 2173, "unique_downloads": 215, "unique_views": 560, "views": 591 } }, "status": "published", "updated": "2021-06-23T01:48:32.448358+00:00", "versions": { "index": 3, "is_latest": true } }