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Dissertations / Theses on the topic 'Offshore wind power integration'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Verez, Guillaume. "System integration of large scale offshore wind power." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elkraftteknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-12608.

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Electricity generation, along with motor vehicles, is one of the biggest sources of pollution for the planet. Renewable energies are not able to replace massively polluting power plants but they can at least alleviate for it. Biomass and hydro power are the main source of renewable energy but wind power is developing to high extent, increasing by 30% its installed capacity every year in the world. Norway is increasing its wind power production since every hydro power areas are already used. The shallow Norwegian waters along with the increase of energy demand leads to offshore wind project.The

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2

Sommerfelt, Knut Magnus. "Offshore Wind Power in the North Sea : Grid Integration of 1000 MW Offshore Wind Power into the Norwegian Power System." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elkraftteknikk, 2008. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-12868.

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Norway has great potential for offshore wind power, but the depths just outside the coast probably make floating wind turbines necessary. In order to use todays technology for offshore wind turbines with foundations on the seabed, water depths cannot be much larger than 60 meters. It is possible to install the wind turbines at such depths, but the distance to these areas make AC cable transmission difficult because of the reactive power production in the cables. VSC HVDC is a technology well suited for offshore wind power, and HVDC Light is now commercially available for rating up to 1174 MW.

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3

Al-Mimar, Samer. "Integration of solar and wind power at Lillgrundwind farm. : Wind turbine shadow effect on solar farm atLillgrund wind farm." Thesis, Högskolan i Halmstad, Energivetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-28428.

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The supply of energy is a key factor in modern societies. As the old fossil sources for energy are dwindling, conflicts arise between competing nations and regions. Fossil energy sources also contribute to the pollution of the environment and emission of greenhouse gases. With renewable energy sources many of these drawbacks with fossil fuels can be eliminated as the energy will be readily available for all without cost or environmental impact. Combining the renewable energy sources will be very effective, particularly in commercial areas where lake of electricity is high. The cost of combinin

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4

Raza, Muhammad. "Offshore grid control of voltage source converters for integrating offshore wind power plants." Doctoral thesis, Universitat Politècnica de Catalunya, 2017. http://hdl.handle.net/10803/461835.

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The offshore grid in North and Baltic Sea can help Europe to achieve 2020 and 2030 renewable energy target to counter climate changes . The formation of offshore grid requires the interconnection between several offshore wind power plants with multiple onshore grids. A voltage source converter based high voltage direct current transmission system is suitable to operate such an integrated offshore network. The offshore grid will enhance the trade between countries, provide better infrastructure for offshore wind power plants integration, and improve the energy market. This thesis presents th

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Årdal, Atle Rygg. "Feasibility Studies on Integrating Offshore Wind Power with Oil Platforms." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elkraftteknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-13683.

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This thesis is centered around the possibilities of integrating offshore wind power together with oil and gas platforms. The motivation behind this topic is to reduce the emissions of CO2 and other pollutive gases from conventional offshore power plants. The electrical systems on oil platforms are weaker than an onshore grid, so measures should be taken to let the wind power integration contribute to a more stable operation on the platform. To explore existing and future technologies that can achieve this is an important part of this work. Two different power systems are presented, denoted Sys

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6

Renaudin, Fabien. "Integration and Stability of a Large Offshore Wind Farm with HVDC Transmission in the Norwegian Power System." Thesis, Norwegian University of Science and Technology, Department of Electrical Power Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9820.

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<p>In the last decades, due to the environmental concerns and the increase of energy demand, wind power has strongly penetrated the field of electricity generation. Today, because of the lack of onshore sites and visual and noise nuisances, the development of wind farms turns more and more to offshore and Norway has a great potential of offshore wind power. This thesis investigates the impact of the integration of an offshore 1000MW wind farm on the Norwegian power system. Two different transmissions are used, one HVAC transmission system and one HVDC transmission system. They are installed

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7

Hadiya, Maheshkumar. "Case study of offshore wind farm integration to offshore oil and gas platforms as an isolated system - System Topologies, Steady State and Dynamic Aspects." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elkraftteknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-14148.

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The objective of this thesis work has been to investigate the electric system stability, reliability and power security of an off-grid isolated network system integration of an offshore wind farm to offshore oil and gas platforms via HVAC transmission, considering different network topologies for wind power penetration, network losses, application of FACTS devices and different system voltage levels. The system stability studies were performed by steady state and dynamic simulations, analysing different perturbation events in the system. The power system model under study was estab

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8

Øren, Lars Pedersen. "System Analysis of Large-Scale Wind Power Integration in North-Western Europe : A study on the impact of large-scale wind power expansion and on the impact of a North Sea offshore grid." Thesis, Norwegian University of Science and Technology, Department of Electrical Power Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9020.

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<p>Problem description: The objective of this project was to create a simple model of the European power system and to investigate the effect an increasing amount of on- and offshore wind power will have on the North European power market in general and Norway in particular. The scenarios contain increasing amounts of installed wind power capacity, both on- and offshore. Emphasis was to be on the area surrounding the North Sea. The project covers the following issues: - Simulations of simplified power system scenarios set in the years 2005, 2020 and 2030. - Study how an increasing amount of i

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9

Jiménez, García Isadora Christel. "Offshore wind energy and birds: Integrating assessment tools in space and time / Energia eòlica marina i aus: integració de les eines d’avaluació a l’espai i el temps." Doctoral thesis, Universitat de Barcelona, 2012. http://hdl.handle.net/10803/107961.

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Amongst the available renewable energy sources, offshore wind energy is having a rapid expansion. Renewable energies are viewed as an environmental benign alternative to the energy production based on fossil fuels, but the emerging development of offshore wind energy has also raised public concern over its potential impact on seabird communities. To assess this impact, seabird distribution and abundance maps are usually included in Strategic Environmental Assessments (SEA) and Environmental Impact Assessments (EIA). Nevertheless few studies have attempted to develop analytical methods to asse

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10

Wisznia, Roman. "Condition Monitoring of Offshore Wind Turbines." Thesis, KTH, Kraft- och värmeteknologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-118455.

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The growing interest around offshore wind power, providing at the same time better wind conditions and fewer visual or environmental impacts, has lead many energy suppliers to consider the installation of offshore wind farms. However, the marine environment makes the installation and maintenance of wind turbines much more complicated, raising the capital and operation costs to an undesirable level and preventing the fast progression of this technology worldwide. Availability of offshore wind turbines varies between 65 and 90% depending on location, whereas onshore turbines range between 95 and

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11

Liapodimitris, Dimitrios. "VESSEL FLEET OPTIMISATION FOR OFFSHORE WIND POWER MAINTENANCE." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-332005.

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Wind power has been a leading energy source in the renewable energy sector. The offshore wind power industry is rapidly growing, having the advantages of great wind resources, with minimum impact on residential areas; however, the high O&M costs add significantly to the LCOE, and present a challenge to the project developers and operators. The objective of this Thesis is to develop an optimisation method aiming to optimise the O&M vessel fleet in terms of its size and mix, and implement it into a spreadsheet-based tool. At first, a review on the available literature was conducted, in o

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12

Cheah, Marc. "Offshore wind integration through high voltage direct current systems." Thesis, Cardiff University, 2017. http://orca.cf.ac.uk/101463/.

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Offshore wind generation has an important role in the transition to renewable energy. In particular, HVDC-connected Offshore Wind Power Plants (OWPPs) are emerging as an economical solution for long distances from the shore. This thesis was focused on three key areas related to planning, operation and stability issues, which are present technical challenges in the integration of OWPPs through VSC-HVDC transmission systems. In relation to planning, the installation of interlink cables between OWPPs was analysed to increase the wind power transfer. Different interlink options were compared based

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13

Viertel, René, Gerd Tetzlaff, and Martin Kaltschmitt. "Offshore-Windenergie zur Stromerzeugung." Universitätsbibliothek Leipzig, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-218271.

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Der mittlere Wind in der atmospärischen Grenzschicht über den deutschen Nord- und Ostseegebieten unterscheidet sich gegenüber Landflächen durch höhere Windgeschwindigkeiten, eine stärkere Zunahme mit der Höhe und schwache Tages- sowie ausgeprägte Jahresgänge der Windgeschwindigkeit in Bodennähe. Neben diesen Vorteilen ergeben sich auch Nachteile im Hinblick auf die Windenergienutzung offshore. Das betrifft die Anforderungen an die Technik der Windstromerzeugung sowie wie die Messung und Prognose der relevanten meteorologischen Parameter. Nach Abschätzungen möglicher Flächen für die Windnutzung

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14

Shams, Solary Arasto. "Wind power plants integration to the power grid." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-200633.

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15

Alnaami, Zurya, and José Duenas. "Wind Power Integration and Operational Challenges." Thesis, KTH, Industriell ekologi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-189059.

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Wind power generation has gained considerable relevance in global energy markets in the last few decades. The technology behind wind turbines and their integration to the power grid are still the focus of considerable research. How exactly does this energy source influence the existing power distribution grid is still a matter of interest to many parties. The method used in this report is based on a literature study which intends to examine what is the current state of energy generation based on wind power in Sweden. In the report we have analyzed some of the integration and operational challe

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16

Duenas, José, and Zurya Alnaami. "Wind Power Integration and Operational Challenges." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-200629.

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17

kollappillai, Murugan Sai Varun. "Analysis of Hybrid Offshore Floating Wind and Marine Power." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-36861.

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Wind energy is a major part of renewable energy production. With fossil fuel depletion and climate change at the cusp, it is an absolute need to implement or evolve the current source or utilization of renewable energy. The wind has been dominating the onshore for many decades and offshore wind turbines are available at shallow depths. To extract more wind energy source deep sea location is recommended. Also, in deep seas, ocean current energy is utilized very sparsely compared to the dominating wind and solar energy. So far no hybrid offshore horizontal axis and ocean current system are in e

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18

Banham-Hall, Dominic. "Active power control response from large offshore wind farms." Thesis, Brunel University, 2012. http://bura.brunel.ac.uk/handle/2438/11051.

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The GB power system will see huge growth in transmission connected wind farms over the next decade, driven by European clean energy targets. The majority of the UK’s wind development is likely to be offshore and many of these wind farms will be interfaced to the grid through power converters. This will lead to a loss of intrinsic inertia and an increasing challenge for the system operator to keep grid frequency stable. Given this challenge, there is increasing interest in understanding the capabilities of converter control systems to provide a synthesised response to grid transients. It is int

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19

Fan, Yuanyuan. "Analysis and Control of Offshore Wind Power Collection Systems." Thesis, Curtin University, 2016. http://hdl.handle.net/20.500.11937/48902.

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The utilization of offshore wind energy in power systems generally includes power generation, power collection and power transmission. An efficient wind energy conversion system is proposed for offshore wind power generation. Three types of DC collection systems are discussed for both normal and fault operations. To integrate the power from several offshore wind farms with a grid, the multi-terminal HVDC system is applied. All the proposals are verified through extensive simulation studies.

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20

Matevosyan, Julija. "Wind Power Integration in Power Systems with Transmission Bottlenecks." Doctoral thesis, Stockholm, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4108.

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21

Viertel, René, Gerd Tetzlaff, and Martin Kaltschmitt. "Offshore-Windenergie zur Stromerzeugung." Universität Leipzig, 2004. https://ul.qucosa.de/id/qucosa%3A15278.

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Der mittlere Wind in der atmospärischen Grenzschicht über den deutschen Nord- und Ostseegebieten unterscheidet sich gegenüber Landflächen durch höhere Windgeschwindigkeiten, eine stärkere Zunahme mit der Höhe und schwache Tages- sowie ausgeprägte Jahresgänge der Windgeschwindigkeit in Bodennähe. Neben diesen Vorteilen ergeben sich auch Nachteile im Hinblick auf die Windenergienutzung offshore. Das betrifft die Anforderungen an die Technik der Windstromerzeugung sowie wie die Messung und Prognose der relevanten meteorologischen Parameter. Nach Abschätzungen möglicher Flächen für die Windnutzung

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22

Geary, Ryan D. "A review of offshore wind technology and the development of the Virginia coastline and outer continental shelf /." Full-text of dissertation on the Internet (1.84 MB), 2009. http://www.lib.jmu.edu/general/etd/2009/Masters/Geary_RyanD/gearyrd_masters_12-10-2009_01.pdf.

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23

Solvang, Tarjei Benum. "Large-scale wind power integration in Nordland." Thesis, Norwegian University of Science and Technology, Department of Electrical Power Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9596.

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<p>Nord-Norsk Vindkraft AS is planning to build two wind farms in Nordland, Norway. The wind farms are located at Sleneset and Sjonfjellet. The planned total installed power is 653 MW. An important part of the planning phase is to perform steady-state and dynamic analyses, to simulate the impacts from the wind farms on the existing power system in the area. The steady-state analysis is performed by Norsk Systemplan og Enøk AS (NORSEC). The project presented in this master thesis is part of the dynamic analysis. The overall objective for this project is to illustrate the dynamic impacts from

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24

Bryans, L. "Grid integration of large-scale wind power." Thesis, Queen's University Belfast, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.438115.

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Olauson, Jon. "Modelling Wind Power for Grid Integration Studies." Doctoral thesis, Uppsala universitet, Elektricitetslära, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-302837.

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When wind power and other intermittent renewable energy (IRE) sources begin to supply a signiﬁcant part of the load, concerns are often raised about the inherent intermittency and unpredictability of these sources. In order to study the impact from higher IRE penetration levels on the power system, integration studies are regularly performed. The model package presented and evaluated in Papers I–IV provides a comprehensive methodology for simulating realistic time series of wind generation and forecasts for such studies. The most important conclusion from these papers is that models based on c

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26

Sajadi, Amirhossein. "Analytical Tools for Transmission Planning Studies for Offshore Wind Farm Integration." Case Western Reserve University School of Graduate Studies / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=case1459514833.

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27

Livermore, Luke. "Integration of offshore wind farms through High Voltage Direct Current networks." Thesis, Cardiff University, 2013. http://orca.cf.ac.uk/42892/.

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The integration of offshore wind farms through Multi Terminal DC (MTDC) networks into the GB network was investigated. The ability of Voltage Source Converter (VSC) High Voltage Direct Current (HVDC) to damp Subsynchronous Resonance (SSR) and ride through onshore AC faults was studied. Due to increased levels of wind generation in Scotland, substantial onshore and offshore reinforcements to the GB transmission network are proposed. Possible inland reinforcements include the use of series compensation through fixed capacitors. This potentially can lead to SSR. Offshore reinforcements are propos

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Prieto, Araujo Eduardo. "Power converter control for offshore wind energy generation and transmission." Doctoral thesis, Universitat Politècnica de Catalunya, 2016. http://hdl.handle.net/10803/396110.

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This thesis discusses the control of different power converters that will have a key role in future offshore wind power systems, enabling the integration of the power generated by the wind turbines into the mainland grid. First, an overview of the evolution of wind turbines is presented, from the first prototypes to the latest topologies in use. Then, a new decentralized control strategy of a triple three-phase permanent magnet synchronous generator, a machine topology specifically designed for offshore wind, is presented. The proposed controller is tested on a wind turbine emulator with a sc

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29

Lange, Bernhard. "Modelling the marine boundary layer for offshore wind power utilisation." [S.l.] : [s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=966278410.

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30

Berglund, Arne. "Control System for Reactive Power of an Offshore Wind Farm." Thesis, Uppsala University, Department of Physics and Astronomy, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-124571.

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<p>Until just a few years ago wind farms where excluded from many of the requirementsthat can be found in grid codes. But as the numbers of wind farms have grown as wellas the sizes of them, the requirements to connect them to the grid have becomemore stringent. In this thesis it has been investigated if it’s possible to design a controlsystem that controls the reactive power from an offshore wind farm, so that the gridcode requirements regarding reactive power are fulfilled. By controlling the reactivepower the dynamic variations in the voltage are decreased. The regulator should alsobe able

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Gesino, Alejandro J. [Verfasser]. "Power reserve provision with wind farms : Grid integration of wind power / Alejandro J. Gesino." Kassel : Kassel University Press, 2011. http://d-nb.info/1017005591/34.

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32

Lundin, Rasmus, and Benjamin Beitler-Dorch. "Modelling and Analysis of Mobile Energy Transmission for Offshore Wind Power : An analysis of flow batteries as an energy transmission system for offshore wind power." Thesis, Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-40082.

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A comparison between a traditional fixed high voltage direct current energy transmission system and a mobile transmission system utilizing vanadium redox flow batteries has been conducted in this degree work. The purpose of this comparison was to evaluate if a mobile energy transmission system could be competitive in terms of energy efficiency and cost-effectiveness for use in offshore wind power applications. A literary study was made to fully grasp the various technologies and to create empirical ground of which cost estimation methods and energy calculations could be derived. A specific sc

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Halliday, J. A. "Wind meteorology and the integration of electricity generated by wind turbines." Thesis, University of Strathclyde, 1988. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=21325.

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The generation of electricity using wind turbines is now widespread and commercially viable. There are two aspects of wind energy which are critically important. Firstly, the evaluation of the wind resource, both on nationally and on a local scale. Secondly, the integration of electricity generated by wind turbines into existing electricity grids without reducing the reliability of supply or reducing the overall economic efficiency of the system. This thesis examines both these aspects. Chapters 3 and 4 are concerned with the large scale utilisation of wind energy. Chapter 3 discusses the suit

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Brookes, Kate Louise. "Assessment of methods used to investigate the impact of offshore wind farms on seabirds." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2009. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=59374.

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Merkai, Christina. "Tidal park within offshore wind parks : An analysis for the potential use of tidal kites within the Aberdeen offshore wind farm." Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-240594.

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Offshore wind has proved to be one of the most reliable and clean energy sources over the last few years. The industry has experienced a significant growth, with an increase of 101% only in 2017 compared to 2016. This raises the importance of the need for more secure power supply systems, which can be used for controlling the offshore farms during disconnections from the main grid. Nowadays, diesel generators are being used to feed auxiliary services of the offshore wind turbines in situations of emergency. However, as the marine renewable energy industry evolves, tidal energy parks have the p

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Aragüés, Peñalba Mònica. "Operation and control of transmission systems for offshore wind power plants." Doctoral thesis, Universitat Politècnica de Catalunya, 2016. http://hdl.handle.net/10803/393893.

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This thesis deals with grid integration of oshore wind power plants through HVDC (High Voltage Direct Current) or HVAC (High Voltage Alternating Current) transmission . The behaviour of wind farms and their transmission systems in normal operation and under faults is analyzed. On the eld of HVDC transmission , a control scheme based on an optimum voltage algorithm is proposed and compared to voltage droop control. The dierences between the proposed scheme and droop control in terms of losses are analyzed, in steady state as well as dynamically. This new control scheme is enhanced, being able t

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Hanssen, Mari Røed. "Operation Features of a Reduced Matrix Converter for Offshore Wind Power." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elkraftteknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-12581.

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When a wind park is sited offshore, compact, lightweight and reliable components are important requirements. In this Master's thesis a wind energy conversion system has been proposed, where the objective is to meet the requirements of an offshore environment. The system consists of a permanent magnet generator, a reduced matrix converter, a high frequency transformer and a full-bridge converter. It is the reduced matrix converter which is the main focus of the thesis. The reduced matrix converter (RMC) provides direct AC-AC conversion without the need of a bulky DC link capacitor, it is thus a

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Krueger, Andrew D. "Valuing public preferences for offshore wind power a choice experiment approach /." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 172 p, 2008. http://proquest.umi.com/pqdweb?did=1456295031&sid=5&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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Kurt, Melih [Verfasser]. "Development of an Offshore Specific Wind Power Forecasting System / Melih Kurt." Kassel : Kassel University Press, 2017. http://d-nb.info/1143153545/34.

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Nieradzinska, Kamila. "Multi-technology offshore wind power systems : control and dynamic performance assessment." Thesis, University of Strathclyde, 2017. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=28869.

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This thesis presents a comprehensive study on the operation, principles and theory of wind farms consisting of doubly-fed induction (DFIG) and fully-rated converter (FRC) wind generators working together in a hybrid arrangement. The main objective of this study is to develop control strategies for the hybrid arrangement of wind turbines in order to improve the grid code compliance of the overall wind farm by exploiting the unique characteristics of both technologies to support each other in case of a fault happening. As a result, this thesis presents a novel control strategy for fully rated co

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Trøtscher, Thomas. "Large-scale Wind Power integration in a Hydro-Thermal Power Market." Thesis, Norwegian University of Science and Technology, Department of Electrical Power Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9551.

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<p>This master thesis describes a quadratic programming model used to calculate the spot prices in an efficient multi-area power market. The model has been adapted to Northern Europe, with focus on Denmark West and the integration of large quantities of wind power. In the model, demand and supply of electricity are equated, at an hourly time resolution, to find the spot price in each area. Historical load values are used to represent demand which is assumed to be completely inelastic. Supply is modeled according to the type of generation: Thermal generators are represented by piecewise linea

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Kunwar, Amit. "Stability aspects of wind power integration in power systems and microgrids." Thesis, Kunwar, Amit (2019) Stability aspects of wind power integration in power systems and microgrids. PhD thesis, Murdoch University, 2019. https://researchrepository.murdoch.edu.au/id/eprint/49890/.

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Wind farms can be located in remote and weak parts of power networks, due to the availability of wind energy. With integration of power from such wind farms, the power system’s stability might be affected especially at higher penetration levels. Instability issues resulting from such incorporations must be addressed to accommodate higher wind power penetration in the power networks. This thesis attempts to analyse the stability issues of power system with integration of variable speed wind turbine technology especially focusing on doubly fed induction generators. Additionally, a microgrid with

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Zhou, Yao. "High voltage DC/DC converter for offshore wind application." Thesis, University of Edinburgh, 2015. http://hdl.handle.net/1842/18749.

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With the increasing interest in offshore wind power, the related technologies, including HVDC networks, are gaining similar levels of attention. For large scale wind farms far from shore, high voltage DC transmission can provide several advantages over traditional high voltage AC transmission. This thesis focuses on DC/DC converters, a core part of the HVDC network, especially for use in the high voltage, high power and offshore wind environment. The thesis examines a wide range of possible DC/DC converter topologies for the application. Different topologies are compared and evaluated in detai

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Halfpenny, Andrew. "Dynamic analysis of both on and offshore wind turbines in the frequency domain." Thesis, University College London (University of London), 1998. http://discovery.ucl.ac.uk/1317858/.

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This thesis presents several developments in analysing wind turbines in the frequency domain. Previous work in the area has developed computer-based models to predict the rotationally sampled stochastic wind speed witnessed by the blades of a wind turbine. Work has also been carried out to include rudimentary capabilities to model blade, tower and drivetrain flexibilities. These are usually limited to modelling only the first mode responses in each case. This thesis describes the development of a new frequency domain model with the ability to analyse fully flexible turbines using a Finite Elem

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Wilberts, Frauke. "MEASUREMENT DRIVEN FATIGUE ASSESSMENT OF OFFSHORE WIND TURBINE FOUNDATIONS." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-337960.

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The installed capacity of offshore wind turbines in Europe is increasing with the monopile being the most common type of foundation. During its lifetime an offshore wind turbine is exposed to high dynamic loads which eventually can result in the fatigue of the substructure. This thesis will show how the linear damage accumulation approach based on the Miner’s rule can be used to estimate the damage induced on the substructure of an offshore wind turbine using measurements from strain gauges. Furthermore, the most important environmental influences will be illustrated and the different stress c

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Alhamalawi, Mazen. "Offshore Wind Power Foundations' Corrosion Protection Strategy : Anlysis remotely controlled corrosion protection system and comparison to traditional corrosion protection of offshore wind foundation." Thesis, Linnéuniversitetet, Sjöfartshögskolan (SJÖ), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-103460.

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När en metall är omgärdad av en elektrolyt, så som havsvatten, kommer det att byggas upp en naturlig potential. Det sker en elektronvandring mellan materialet och havsvattnet och ju större potentialskillnad desto större sannolikhet att metallen kommer korrodera. Korrosion är en stor och viktig fråga för offshorekonstruktioner och byggnader. För att uppnå en konstruktions designade livslängd kan åtgärder vidtas med hänsyn till kapitalkostnader och drift- och underhållskostnader. Denna studie syftar till att jämföra ekonomiska för- och nackdelar hos de två korrosionsskyddssystemen Galvanic Ano

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Borràs, Morales Jan. "Park optimization and wake interaction study at Bockstigen offshore wind power plant." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-245579.

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Losses for wake effects in offshore wind farms represent about 10% to 20% of the park annual energy production. Several analytical wake models have been developed and implemented to predict the power deficit of a wake-affected wind turbine. Validating and parameterizing the wake models available in the industry is essential to better predict the wake losses and thus maximize the energy yield of future offshore developments. In this study, a wake model validation is undertaken for the three models available in the commercial software WindSim. Data from Horns Rev wind farm is used to that purpos

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STERMASI, ADRIST. "Offshore wind energy in the Adriatic Sea: Modelling of the microscale wind field and short-term forecast of wind power potential." Doctoral thesis, Università Politecnica delle Marche, 2015. http://hdl.handle.net/11566/242945.

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Studying wind energy is still a challenge. Many arguments are involved in this field such as environmental sustainability, infrastructures, economics and many others, has to find the equilibrium and coexist together for the further development of this technology. The P.O.W.E.R.E.D project, part of the IPA-PROGRAMME deal with these issues concerning the Adriatic basin. Numerical and experimental evaluation of wind energy resources is assigned to Università Politecnica delle Marche. Two maps of different spatial resolutions of one and three kilometers respectively, for one and five years a

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Givaki, Kamyab. "Integration of large wind farms to weak power grids." Thesis, University of Strathclyde, 2017. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=28878.

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Power grids are changing significantly with the introduction of large amounts of renewable energy (especially wind) into the system. Integration of wind energy into the grid is challenging as, firstly it increases penetration stresses when compared to conventional generation as the wind is intermittent and fluctuates in power output. Secondly, most of the wind farms are located in offshore or rural areas which have good wind conditions. The grid in these regions is not normally strong. Most of the modern variable speed wind turbines use voltage source converters (VSCs) for grid integration. Ho

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Alhasawi, Faisal Bader. "Advanced methodologies to facilitate wind power integration studies into existing power networks." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/advanced-methodologies-to-facilitate-wind-power-integration-studies-into-existing-power-networks(c1588b57-57ea-4209-876d-1b7642594590).html.

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The exponential rate of integrating renewable energy sources, especially wind farms, into existing networks - while environmentally beneficial - impacts the operation of power systems economically as well as technically. Reduction in system damping is one possible outcome of large scale wind power integration while the location of wind power sources could easily lead to long distance power transmission through congested lines - especially if the network load is assumed to be rapidly growing at different sites during different times - which may significantly change the generation profile along

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