6 research outputs found
Standardization of Marine Meteorological Data from FINO Offshore Platforms
KlimawandelDer Ausbau der Offshore-Windenergie gehört zu den erklĂ€rten Zielen der Bundesregierung. Um bessere Ken ntnisse der Bedingungen auf See zu erlangen, wurden drei Forschungsplattformen in der Nordsee (FINO 1 und 3) und Ostsee (FINO 2) errichtet. An diesen werden meteorologische und ozeanographische GröĂen in unterschiedlichen Höhen gemessen, um unter anderem Aussagen zu Vertikalprofilen der Windgeschwindigkeit treffen zu können. Da sich die Plattformen und Masten im Design unterscheiden und sich insbesondere bei den Windmessungen deutlich ein richtungsabhĂ€ngiger Einfluss auf die Messungen zeigt, ist fĂŒr die Vergleichbarkeit der Standorte eine standardisierte Auswertung der Messergebnisse erforderlich. Ziel des Projektes FINO-Wind ist es, die Vergleichbarkeit der Daten der drei Standorte zu verbessern und den Datennutzern nach standardisierten Methoden qualitĂ€tsgeprĂŒfte Daten zur VerfĂŒgung zu stellen. Es sollen deshalb Standardisierungsverfahren zur Auswertung der Winddaten entwickelt werden. Insbesondere die verschiedenen Masteffekte werden eingehend untersucht und durch Windkanalmessungen, Vergleich mit LiDAR-Daten, CFD (Computational Fluid Dynamics)-Modellierungen und Anwendung der UAM (Uniform ambient flow mast correction)-Methode abgeschĂ€tzt. Daraus werden Korrekturfaktoren fĂŒr Windmessungen abgeleitet, die spĂ€ter angewendet werden sollen. Die Messdaten, die als 10-Minuten-Werte vorliegen, werden des Weiteren einer umfassenden und automatisierten QualitĂ€tsprĂŒfung unterzogen. Dabei durchlaufen die Daten in aufeinanderfolgenden Schritten formale, klimatologische, zeitliche, Wiederholungs- und KonsistenzprĂŒfungen und werden nach erfolgreichem Abschluss jeder Sequenz mit spezifischen QualitĂ€tsflags gekennzeichnet. Aus der Analyse und dem Vergleich der Instrumentierung in unterschiedlichen Höhen, der Installation und Ausrichtung sowie die Mastkonstruktionen sollen Empfehlungen herausgearbeitet werden, wie zukĂŒnftige Anwendungen im Bereich der Offshore-Windmessungen verbessert werden können
Innovative measurement technologies for met-ocean and soil conditions: Presentation held at Offshore Wind R&D Conference, Bremerhaven, 14.-16.11.2018
The offshore wind industry requires detailed and specific knowledge about the met-ocean and soil conditions. This calls for new, dedicated measurement technology. Two examples for the successful development of such innovative technologies are presented and future needs are discussed
EERA-DTOC calculation of scenarios
This report describes the calculation of scenarios which have been defined to demonstrate the value of the EERA-DTOC tool. Thereto it should be realized that the value of the EERA-DTOC tool could best be demonstrated by a comparison with measurements but the intended clusters for which the tool is developed are still mainly in the planning phase by which measurements to validate the tool are lacking. However, by the calculation of likely scenarios, the industrial usefulness of the tool can still be tested where moreover an âexpert viewâ on the results will be carried out in order to check their degree of reality. Therefore several scenarios are described which are denoted as the âbase and the near future scenarioâ, i.e. scenarios which are still relatively close to the present state of the art wind farm (clusters). This is in particular true for the base scenario which is described as a scenario which reflects âthe current way of thinkingâ. The near future scenario goes beyond the current way of thinking by using upscaled turbines. The description of these scenarios is given in D5.2 The base scenario considers a 500MW wind farm which consists of hundred turbines with a rated power of 5 MW at the location where the Race Bank wind farm is planned under the UK Round 2. This farm is planned 27 km from the North Norfolk coast at the Eastern part of England. The Race Bank farm is surrounded by several other wind farms which are either operational or under construction. The turbine which is selected for this farm is the reference turbine from the former EU project Upwind, since this turbine is described in detail in public literature and reflects the current state of the art wind turbine technology. The near future scenario assumes a 1 GW wind farm and is located at the Dogger Bank in the North Sea. It consists of 100 turbines with a rated power of 10 MW. Although 10 MW turbines are not on the market yet the INNWIND.EU reference wind turbine has been selected since a full description of this turbine is available. Moreover a far future scenario is defined which refers to a time line of some 15 year. It consists of large clusters (up to 10 GW) where some of the farms in the cluster are differently sized and contain floating turbines. The far future scenario includes several grid planning options, both for the export to the mainland as for interconnecting wind farms in the cluster. It even includes interconnections with other development zones or even to other countries, combining wind power export and cross-border electricity trade