Готові списки джерел за темами / Offshore renewable energy systems

Добірка наукової літератури з теми "Offshore renewable energy systems"

Автор: Grafiati
Опубліковано: 10 грудня 2022
Оновлено: 28 січня 2023

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Статті в журналах з теми "Offshore renewable energy systems"

1

Wood, Robert J. K., AbuBakr S. Bahaj, Stephen R. Turnock, Ling Wang, and Martin Evans. "Tribological design constraints of marine renewable energy systems." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 368, no. 1929 (October 28, 2010): 4807–27. http://dx.doi.org/10.1098/rsta.2010.0192.

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Анотація:
Against the backdrop of increasing energy demands, the threat of climate change and dwindling fuel reserves, finding reliable, diverse, sustainable/renewable, affordable energy resources has become a priority for many countries. Marine energy conversion systems are at the forefront of providing such a resource. Most marine renewable energy conversion systems require tribological components to convert wind or tidal streams to rotational motion for generating electricity while wave machines typically use oscillating hinge or piston within cylinder geometries to promote reciprocating linear motion. This paper looks at the tribology of three green marine energy systems, offshore wind, tidal and wave machines. Areas covered include lubrication and contamination, bearing and gearbox issues, biofouling, cavitation erosion, tribocorrosion, condition monitoring as well as design trends and loading conditions associated with tribological components. Current research thrusts are highlighted along with areas needing research as well as addressing present-day issues related to the tribology of offshore energy conversion technologies.
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2

Clark, Caitlyn E., and Bryony DuPont. "Reliability-based design optimization in offshore renewable energy systems." Renewable and Sustainable Energy Reviews 97 (December 2018): 390–400. http://dx.doi.org/10.1016/j.rser.2018.08.030.

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3

Arellano-Prieto, Yessica, Elvia Chavez-Panduro, Pierluigi Salvo Rossi, and Francesco Finotti. "Energy Storage Solutions for Offshore Applications." Energies 15, no. 17 (August 24, 2022): 6153. http://dx.doi.org/10.3390/en15176153.

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Анотація:
Increased renewable energy production and storage is a key pillar of net-zero emission. The expected growth in the exploitation of offshore renewable energy sources, e.g., wind, provides an opportunity for decarbonising offshore assets and mitigating anthropogenic climate change, which requires developing and using efficient and reliable energy storage solutions offshore. The present work reviews energy storage systems with a potential for offshore environments and discusses the opportunities for their deployment. The capabilities of the storage solutions are examined and mapped based on the available literature. Selected technologies with the largest potential for offshore deployment are thoroughly analysed. A landscape of technologies for both short- and long-term storage is presented as an opportunity to repurpose offshore assets that are difficult to decarbonise.
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4

Castro-Santos, Laura, and Almudena Filgueira-Vizoso. "A Software for Calculating the Economic Aspects of Floating Offshore Renewable Energies." International Journal of Environmental Research and Public Health 17, no. 1 (December 27, 2019): 218. http://dx.doi.org/10.3390/ijerph17010218.

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Анотація:
The aim of this work is to develop a software to calculate the economic parameters so as to determine the feasibility of a floating offshore renewable farm in a selected location. The software can calculate the economic parameters of several types of offshore renewable energies, as follows: one renewable energy (floating offshore wind—WindFloat, tension leg platform (TLP), and spar; floating wave energy—Pelamis and AquaBuoy), hybrid offshore wind and wave systems (Wave Dragon and W2Power), and combined offshore wind and waves with different systems (independent arrays, peripherally distributed arrays, uniformly distributed arrays, and non-uniformly distributed arrays). The user can select several inputs, such as the location, configuration of the farm, type of floating offshore platform, type of power of the farm, life-cycle of the farm, electric tariff, capital cost, corporate tax, steel cost, percentage of financing, or interest and capacity of the shipyard. The case study is focused on the Galicia region (NW of Spain). The results indicate the economic feasibility of a farm of floating offshore renewable energy in a particular location in terms of its costs, levelized cost of energy (LCOE), internal rate of return (IRR), net present value (NPV), and discounted pay-back period. The tool allows for establishing conclusions about the dependence of the offshore wind resource parameters, the main distances (farm–shore, farm–shipyard, and farm–port), the parameters of the waves, and the bathymetry of the area selected.
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Jones, Anthony T., and Will Rowley. "Global Perspective: Economic Forecast for Renewable Ocean Energy Technologies." Marine Technology Society Journal 36, no. 4 (December 1, 2002): 85–90. http://dx.doi.org/10.4031/002533202787908608.

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Анотація:
Renewable energy sources from the oceans include offshore wind, wave energy, and underwater currents. Sustainable future economies require renewable energy sources. Recent developments in ocean-based renewable energy systems are outlined and forecasts for the next decade are put forth. Offshore wind energy is the fastest growing sector in renewable energy. Anticipated to reach $6 billion per year in Europe by 2006, upwards of 86 MW of capacity from 88 turbines are in place today. Capacity by 2010 is projected to grow to at least 2000 MW. Governmental support in Europe is fueling the development, in part, because of greenhouse gas emission targets. The first commercial-scale wave power facility was established in Scotland. Several proponents plan prototype demonstrations over the next few years. Growth in this sector is anticipated to reach $100 million per annum by 2010. Projects harnessing tidal currents have shifted toward capturing tidal-driven coastal currents. Conservative estimates of $40 million per annum by 2010 appear realistic. Ocean-based renewable energy development lag land-based systems because of significant capital requirements and difficulty obtaining the necessary financing due to risk and market barriers. The technical capabilities, both in engineering and management, exist in the offshore sector to undertake the size and scope of projects envisioned.
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6

Vasudevan, Saravanan, Venkatachalam Moorthy Kondayampalayam, and Arumugam Murugesan. "Recent developments in offshore wind energy systems: Technologies and practices." International Journal of Advances in Applied Sciences 11, no. 3 (September 1, 2022): 220. http://dx.doi.org/10.11591/ijaas.v11.i3.pp220-231.

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Анотація:
This paper deals with offshore wind power generation technologies, power transmission and grid communication features, and associated power system studies for effective implementation of offshore wind energy systems, explaining its various stages of implementation. Also, this paper reviews the latest trends in offshore wind energy systems, addressing various aspects like large wind farm siting, power evacuation studies, cable selection, high-voltage direct current/flexible alternating current transmission systems (HVDC/FACTS) technology options, reliability evaluation, and autonomous monitoring. India's renewable power generation capacity through off-shore wind generation is also outlined to ensure low carbon energy emissions with improved energy efficiency. The policy and regulatory framework factors for reaching five gigawatts (GW) of offshore wind projects in the states of Tamilnadu and Gujarat by the year 2032 using current methods and advanced technology are discussed here. This goal can be accomplished using current practices and advanced technologies. For effective implementation of offshore wind farms, suitable measures and likely actions by various stakeholders are suggested.
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7

Filgueira-Vizoso, A. "Importance of the fluctuations of the steel price in the economic feasibility of a hybrid offshore platform in the West of the Iberian Peninsula." Renewable Energy and Power Quality Journal 20 (September 2022): 525–29. http://dx.doi.org/10.24084/repqj20.354.

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Анотація:
The aim of this paper is to study the suitability of different floating offshore energy technologies in a particular location in economic terms. In this context, their main initial investments and expenses have been taken into account in order to calculate the economic indicators of the economic feasibility study. These indicators are Internal Rate of Return, Net Present Value and Levelized Cost Of Energy. The case study has evaluated the Canary Islands (Spain) and three types of floating offshore renewable energies: offshore wind, wave energy and hybrid systems. The method created generates economic maps, which facilitates the election of the best area where install offshore renewable energy farms in the location selected. In addition, it also allows to select what is the best marine technology to be exploited in this area.
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Riboldi, Luca, Marcin Pilarczyk, and Lars O. Nord. "The Impact of Process Heat on the Decarbonisation Potential of Offshore Installations by Hybrid Energy Systems." Energies 14, no. 23 (December 3, 2021): 8123. http://dx.doi.org/10.3390/en14238123.

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Анотація:
An opportunity to decarbonise the offshore oil and gas sector lies in the integration of renewable energy sources with energy storage in a hybrid energy system (HES). Such concept enables maximising the exploitation of carbon-free renewable power, while minimising the emissions associated with conventional power generation systems such as gas turbines. Offshore plants, in addition to electrical and mechanical power, also require process heat for their operation. Solutions that provide low-emission heat in parallel to power are necessary to reach a very high degree of decarbonisation. This paper investigates different options to supply process heat in offshore HES, while the electric power is mostly covered by a wind turbine. All HES configurations include energy storage in the form of hydrogen tied to proton exchange membrane (PEM) electrolysers and fuel cells stacks. As a basis for comparison, a standard configuration relying solely on a gas turbine and a waste heat recovery unit is considered. A HES combined with a waste heat recovery unit to supply heat proved efficient when low renewable power capacity is integrated but unable to deliver a total CO2 emission reduction higher than around 40%. Alternative configurations, such as the utilization of gas-fired or electric heaters, become more competitive at large installed renewable capacity, approaching CO2 emission reductions of up to 80%.
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Sari, Arif, Ali Karaduman, and Altay Firat. "Deployment Challenges of Offshore Renewable Energy Systems for Sustainability in Developing Countries." Journal of Geographic Information System 07, no. 05 (2015): 465–77. http://dx.doi.org/10.4236/jgis.2015.75037.

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Carpenter, Chris. "Repurposing Offshore Pipeline as Energy Storage Opens Market Segment." Journal of Petroleum Technology 74, no. 09 (September 1, 2022): 77–79. http://dx.doi.org/10.2118/0922-0077-jpt.

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Анотація:
_ This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper OTC 31703, “Repurpose Offshore Pipeline as Energy Storage (ROPES): Opening a New Market Segment Offshore,” by Azril Syazwan Hazim, SPE, Subsea 7, Daniel Buhagiar, FLASC, and Alasdair Gray, Xodus. The paper has not been peer reviewed. Copyright 2022 Offshore Technology Conference. Reproduced by permission. _ The repurposed offshore pipelines as energy storage (ROPES) solution repurposes aged offshore installations into energy storage systems based on proven hydropneumatic principles toward a cost-competitive, reliable system. Findings from a recent concept-assessment study show the cost competitiveness of the solution as a result of a low levelized cost of storage (LCOS) paired with the value of deferring full decommissioning of existing assets. The ROPES solution enables the storage of renewable power while allowing for the optimization of time and expenditure for decommissioning of infrastructure. Background Energy-storage technologies address a fundamental problem related to the integration of renewable energy production into conventional energy systems on a large scale: the mismatch between intermittent energy supply and consumer demand. Balancing supply and demand is quickly becoming the greatest obstacle to increased uptake of renewable energy. An emerging industrialized energy storage solution (ESS) technology uses mechanical power storage based on proven fluid-compression principles. Hydropneumatic energy storage (HPES) relies on a large pressure containment system (PCS) that acts as a pressurized liquid piston—potentially a pipeline system—with energy activated by a pump and recovered through a turbine. The solution is positioned to improve on economics for offshore wind farms either through remote units within each turbine or through the ROPES concept, with the energy conversion unit (ECU) on either the seabed or an adjacent decommissioned offshore platform. Overview of HPES Technology The proprietary HPES system stores energy by using it to pump seawater into a closed chamber to compress a fixed volume of precharged inert gas. The energy then can be recovered by allowing the compressed gas to push the water back out through a hydraulic turbine generator. The technology embodies a patented combination of two key features: - Pneumatic precharging allows the system to be installed in shallow water, making it suitable for both fixed-bottom and floating wind applications. - Using the ocean as a natural heatsink results in an efficient, isothermal system without the need for complex thermal-management systems.
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Більше джерел

Дисертації з теми "Offshore renewable energy systems"

1

Burchell, Joseph William. "Advancement of direct drive generator systems for offshore renewable energy production." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/33263.

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Анотація:
As machine topologies and technologies mature, the fundamental function of the device is honed. Direct drive machines have the potential to launch the renewable energy sector into a new era of large scale, reliable, offshore power generation. With advancements in new technologies, such as superconductivity, the reduction of generator mass due to incorporation of machine and device structures, the continued advancements in component and system reliability; direct drive generators have the ability to outsize geared wind systems and simplify submerged linear and rotary power generation. The research held within this thesis will focus on improving direct drive power take off systems for offshore renewable energy power generation by splitting the area into four parts. The first part will discuss the various methods of energy extraction within the offshore and marine environment. The future of the sector will be discussed, and a forecast of technological advancement and existing reliability issues will be provided based on current data. The second part will focus on drive trains and direct drive generators, assessing the current topologies and suggesting alternatives that may thrive in a variety of large and small offshore renewable machines. The third part investigates the application of novel linear bearings in direct drive systems for offshore and submerged operation. A brief study of the loads found in wave applications will be presented and the testing of several polymer bearing materials will be outlined. The final part will discuss the potential benefits of flooding the airgap of a direct drive generator with sea water for marine applications. Results will be presented from two linear test rigs and the marinisation of devices will conclude the report.
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2

Beyene, Mussie Abraham. "Modelling the Resilience of Offshore Renewable Energy System Using Non-constant Failure Rates." Thesis, Uppsala universitet, Institutionen för elektroteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-445650.

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Анотація:
Offshore renewable energy systems, such as Wave Energy Converters or an Offshore Wind Turbine, must be designed to withstand extremes of the weather environment. For this, it is crucial both to have a good understanding of the wave and wind climate at the intended offshore site, and of the system reaction and possible failures to different weather scenarios. Based on these considerations, the first objective of this thesis was to model and identify the extreme wind speed and significant wave height at an offshore site, based on measured wave and wind data. The extreme wind speeds and wave heights were characterized as return values after 10, 25, 50, and 100 years, using the Generalized Extreme Value method. Based on a literature review, fragility curves for wave and wind energy systems were identified as function of significant wave height and wind speed. For a wave energy system, a varying failure rate as function of the wave height was obtained from the fragility curves, and used to model the resilience of a wave energy farm as a function of the wave climate. The cases of non-constant and constant failure rates were compared, and it was found that the non-constant failure rate had a high impact on the wave energy farm's resilience. When a non-constant failure rate as a function of wave height was applied to the energy wave farm, the number of Wave Energy Converters available in the farm and the absorbed energy from the farm are nearly zero. The cases for non-constant and an averaged constant failure of the instantaneous non-constant failure rate as a function of wave height were also compared, and it was discovered that investigating the resilience of the wave energy farm using the averaged constant failure rate of the non-constant failure rate results in better resilience. So, based on the findings of this thesis, it is recommended that identifying and characterizing offshore extreme weather climates, having a high repair rate, and having a high threshold limit repair vessel to withstand the harsh offshore weather environment.
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3

Heidari, Shayan. "Economic Modelling of Floating Offshore Wind Power : Calculation of Levelized Cost of Energy." Thesis, Mälardalens högskola, Industriell ekonomi och organisation, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-36130.

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Анотація:
Floating offshore wind power is a relatively new technology that enables wind turbines to float above the sea level, tied by anchors at the seabed. The purpose of this work is to develop an economic model for the technology in order to calculate the total cost of a planned wind farm. Cost data are retrieved from reports and academic journals available online. Based on these data, a model in Microsoft Excel is developed which calculates the Levelized cost of energy (LCOE) for floating wind power plants as a function of several input values. As an addition to this model, financing offshore projects are described using literature study and by doing interviews with three major companies, currently investing in offshore wind. As a result, the model allows the user to calculate Capital expenditures, Operating expenditures and LCOE for projects at any given size and at any given site. The current LCOE for a large floating offshore wind farm is indicated to be in the range of 138-147 £/MWh. The outline from interviews was that today there is no shortage of capital for funding wind projects. However, in order to attract capital, the governmental regulatory of that market has to be suitable since it has a crucial impact on price risks of a project.
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4

Fischer, Felix Friedrich. "The regulation of Section 17 (2a) of the German Energy Economy Act against the background of current developments of the German and European offshore wind industry." Thesis, Stellenbosch : Stellenbosch University, 2008. http://hdl.handle.net/10019.1/5750.

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Анотація:
Thesis (MBA (Business Management))--Stellenbosch University, 2008.
ENGLISH ABSTRACT: With the introduction of Section 17 of the EnWG (German Energy Economy Act), the legislator created a new situation for the complex relationships in the German offshore wind industry. The transmission system operators are now obliged not only to provide the connection for offshore wind farms, but also to reimburse the developers of such plants for the costs they incurred in the course of planning the cable connection between the wind farm and the onshore grid. Forecasts had predicted that by 2007 numerous offshore wind farms would be operational. But no development company in the entire sector had moved beyond the planning phase. However, the rapid development of the offshore wind industry is important in order to achieve the German goal to generate 20% of all energy from renewable energy sources by 2020 and thus contribute to the prevention of grave climate changes. It is also important for the domestic labour market and the initiation of further exports of energy technologies. Early domestic growth will eventually payoff as offshore wind energy is implemented by more countries, which will then rely on the experience of German companies. Under these circumstances, Section 17 (2a) S.3 of the EnWG induces a positive impulse for offshore development. Under the financial constraints that dampened the expectations of developers of offshore wind farms, the suggested reimbursement will offer welcome relief. However a broad interpretation of Section 17 (2a) S.3 of the EnWG must be applied in order to reach the goal of actually enhancing offshore development, as is the legislator's intent. Such a broad interpretation of the reimbursement claim will lead to rapid implementation of the new law, as this will be in the interest of the developers and transmission system operators. The developers will have a large interest in beginning with the actual construction of the wind farm, and the transmission system operators will need to proceed with the planning of the cable connection. Even though improvements remain necessary the introduction of Section 17 (2a) S.3 EnWG can be considered a success.
AFRIKAANSE OPSOMMING: Met die inwerkingstelling van afdeling 17 van die EnGW (Duitse Energie Ekonomie Wet), het die regering 'n nuwe situasie geskep vir die komplekse verhouding in die Duitse see-gebonde wind-energie industrie. Die transmissie stelsel operateurs word nou verplig om nie net die verbinding met die wind-plaas te verskaf nie, maar moet ook die ontwikkelaar van die aanleg vergoed vir enige kostes wat hulle aangegaan het met die beplanning van die verbinding tussen die windplaas en die elektrisiteits-netwerk. Vooruitskattings het voorspel dat verskeie see-gebonde windplase operasioneel sou wees teen 2007. Geen ontwikkelingsmaatskappy het egter al tot dusver verder as die beplanningstadium gevorder nie. Desnieteenstaande, die spoedige ontwikkeling van die see-gebonde wind industrie is onontbeerlik in die Duitse mikpunt om 20% van energiebehoeftes op te wek vanuit hernubare bronne teen 2020 en om dus klimaatsverandering teen te werk. Dit is ook belangrik vir werkskepping in Duitsland en vir die uitvoer van energie tegnologie. Spoedige groei in die industrie sal uiteindelik dividende lewer soos seegebonde wind-energie deur ander lande ontwikkel word en gevolglik op Duitse ervaring moet staatmaak. Onder hierdie omstandighede het afdeling 17 (2a) 5.3 van die EnGW 'n positiewe effek op seegebonde ontwikkeling. As gevolg van die dempende effek wat finansiele beperkinge het op die verwagtinge van ontwikkelaars sal die terugbetalings welkome verligting bied. Dit is egter nodig om 'n bree interpretasie van afdeling 17 (2a) 5.3 van die EnGW te gebruik om die mikpunt van werklike bevordering van seegebonde ontwikkeling te bewerkstellig soos die wetgewer beoog. So 'n bree interpretasie sal lei tot spoedige implimentasie van die nuwe wet omdat dit in die belang van ontwikkelaars en transmissie-netwerk eienaars sal wees. Die ontwikkelaars sal baat daarby om spoedig met ontwikkeling te begin, terwyl die netwerk operateurs vordering sal moet maak met die beplanning van die kabel-verbinding. Ten spyte daarvan dat verdere verbeteringe nodig is kan die inwerkingstelling van afdeling 17 (2a) 5.3 van die EnGW as 'n sukses gereken word.
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5

Lindroth, [formerly Tyrberg] Simon. "Buoy and Generator Interaction with Ocean Waves : Studies of a Wave Energy Conversion System." Doctoral thesis, Uppsala universitet, Elektricitetslära, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-160085.

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Анотація:
On March 13th, 2006, the Division of Electricity at Uppsala University deployed its first wave energy converter, L1, in the ocean southwest of Lysekil. L1 consisted of a buoy at the surface, connected through a line to a linear generator on the seabed. Since the deployment, continuous investigations of how L1 works in the waves have been conducted, and several additional wave energy converters have been deployed. This thesis is based on ten publications, which focus on different aspects of the interaction between wave, buoy, and generator. In order to evaluate different measurement systems, the motion of the buoy was measured optically and using accelerometers, and compared to measurements of the motion of the movable part of the generator - the translator. These measurements were found to correlate well. Simulations of buoy and translator motion were found to match the measured values. The variation of performance of L1 with changing water levels, wave heights, and spectral shapes was also investigated. Performance is here defined as the ratio of absorbed power to incoming power. It was found that the performance decreases for large wave heights. This is in accordance with the theoretical predictions, since the area for which the stator and the translator overlap decreases for large translator motions. Shifting water levels were predicted to have the same effect, but this could not be seen as clearly. The width of the wave energy spectrum has been proposed by some as a factor that also affects the performance of a wave energy converter, for a set wave height and period. Therefore the relation between performance and several different parameters for spectral width was investigated. It was found that some of the parameters were in fact correlated to performance, but that the correlation was not very strong. As a background on ocean measurements in wave energy, a thorough literature review was conducted. It turns out that the Lysekil project is one of quite few projects that have published descriptions of on-site wave energy measurements.
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6

Paniah, Crédo. "Approche multi-agents pour la gestion des fermes éoliennes offshore." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112067/document.

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Анотація:
La raréfaction des sources de production conventionnelles et leurs émissions nocives ont favorisé l’essor notable de la production renouvelable, plus durable et mieux répartie géographiquement. Toutefois, son intégration au système électrique est problématique. En effet, la production renouvelable est peu prédictible et issue de sources majoritairement incontrôlables, ce qui compromet la stabilité du réseau, la viabilité économique des producteurs et rend nécessaire la définition de solutions adaptées pour leur participation au marché de l’électricité. Dans ce contexte, le projet scientifique Winpower propose de relier par un réseau à courant continu les ressources de plusieurs acteurs possédant respectivement des fermes éoliennes offshore (acteurs EnR) et des centrales de stockage de masse (acteurs CSM). Cette configuration impose aux acteurs d’assurer conjointement la gestion du réseau électrique.Nous supposons que les acteurs participent au marché comme une entité unique : cette hypothèse permet aux acteurs EnR de tirer profit de la flexibilité des ressources contrôlables pour minimiser le risque de pénalités sur le marché de l’électricité, aux acteurs CSM de valoriser leurs ressources auprès des acteurs EnR et/ou auprès du marché et à la coalition de faciliter la gestion des déséquilibres sur le réseau électrique, en agrégeant les ressources disponibles. Dans ce cadre, notre travail s’attaque à la problématique de la participation au marché EPEX SPOT Day-Ahead de la coalition comme une centrale électrique virtuelle ou CVPP (Cooperative Virtual Power Plant). Nous proposons une architecture de pilotage multi-acteurs basée sur les systèmes multi-agents (SMA) : elle permet d’allier les objectifs et contraintes locaux des acteurs et les objectifs globaux de la coalition.Nous formalisons alors l’agrégation et la planification de l’utilisation des ressources comme un processus décisionnel de Markov (MDP), un modèle formel adapté à la décision séquentielle en environnement incertain, pour déterminer la séquence d’actions sur les ressources contrôlables qui maximise l’espérance des revenus effectifs de la coalition. Toutefois, au moment de la planification des ressources de la coalition, l’état de la production renouvelable n’est pas connue et le MDP n’est pas résoluble en l’état : on parle de MDP partiellement observable (POMDP). Nous décomposons le POMDP en un MDP classique et un état d’information (la distribution de probabilités des erreurs de prévision de la production renouvelable) ; en extrayant cet état d’information de l’expression du POMDP, nous obtenons un MDP à état d’information (IS-MDP), pour la résolution duquel nous proposons une adaptation d’un algorithme de résolution classique des MDP, le Backwards Induction.Nous décrivons alors un cadre de simulation commun pour comparer dans les mêmes conditions nos propositions et quelques autres stratégies de participation au marché dont l’état de l’art dans la gestion des ressources renouvelables et contrôlables. Les résultats obtenus confortent l’hypothèse de la minimisation du risque associé à la production renouvelable, grâce à l’agrégation des ressources et confirment l’intérêt de la coopération des acteurs EnR et CSM dans leur participation au marché de l’électricité. Enfin, l’architecture proposée offre la possibilité de distribuer le processus de décision optimale entre les différents acteurs de la coalition : nous proposons quelques pistes de solution dans cette direction
Renewable Energy Sources (RES) has grown remarkably in last few decades. Compared to conventional energy sources, renewable generation is more available, sustainable and environment-friendly - for example, there is no greenhouse gases emission during the energy generation. However, while electrical network stability requires production and consumption equality and the electricity market constrains producers to contract future production a priori and respect their furniture commitments or pay substantial penalties, RES are mainly uncontrollable and their behavior is difficult to forecast accurately. De facto, they jeopardize the stability of the physical network and renewable producers competitiveness in the market. The Winpower project aims to design realistic, robust and stable control strategies for offshore networks connecting to the main electricity system renewable sources and controllable storage devices owned by different autonomous actors. Each actor must embed its own local physical device control strategy but a global network management mechanism, jointly decided between connected actors, should be designed as well.We assume a market participation of the actors as an unique entity (the coalition of actors connected by the Winpower network) allowing the coalition to facilitate the network management through resources aggregation, renewable producers to take advantage of controllable sources flexibility to handle market penalties risks, as well as storage devices owners to leverage their resources on the market and/or with the management of renewable imbalances. This work tackles the market participation of the coalition as a Cooperative Virtual Power Plant. For this purpose, we describe a multi-agent architecture trough the definition of intelligent agents managing and operating actors resources and the description of these agents interactions; it allows the alliance of local constraints and objectives and the global network management objective.We formalize the aggregation and planning of resources utilization as a Markov Decision Process (MDP), a formal model suited for sequential decision making in uncertain environments. Its aim is to define the sequence of actions which maximize expected actual incomes of the market participation, while decisions over controllable resources have uncertain outcomes. However, market participation decision is prior to the actual operation when renewable generation still is uncertain. Thus, the Markov Decision Process is intractable as its state in each decision time-slot is not fully observable. To solve such a Partially Observable MDP (POMDP), we decompose it into a classical MDP and an information state (a probability distribution over renewable generation errors). The Information State MDP (IS-MDP) obtained is solved with an adaptation of the Backwards Induction, a classical MDP resolution algorithm.Then, we describe a common simulation framework to compare our proposed methodology to some other strategies, including the state of the art in renewable generation market participation. Simulations results validate the resources aggregation strategy and confirm that cooperation is beneficial to renewable producers and storage devices owners when they participate in electricity market. The proposed architecture is designed to allow the distribution of the decision making between the coalition’s actors, through the implementation of a suitable coordination mechanism. We propose some distribution methodologies, to this end
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Honnanayakanahalli, Ramakrishna Prajwal. "MODELING, SIMULATION AND OPTIMIZATION OF A SUBMERGED RENEWABLE STORAGE SYSTEM INTEGRATED TO A FLOATING WIND FARM : A feasibility case study on the Swedish side of the Baltic sea, based on the geographical and wind conditions." Thesis, Mälardalens högskola, Framtidens energi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-42321.

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Mathematical modeling and simulations of a submerged renewable storage system integrated to a wind farm, chosen based on the geographical and wind conditions at the Baltic Sea, gives insight on the feasibility of the submerged renewable storage and an approximation of the payback period and profits that could be generated. Genetic Algorithms were used to obtain the optimal number of spheres for a certain depth, based on 2 objective functions I.e. Minimum Life Cycle Cost (LCC) and maximum reduction in wind curtailment. The new arrangement concept shows that the Initial Capital Cost (ICC) could be decreased by 25% to 60% depending upon the number of sphere employed. Based on the inputs considered in the study, the results prove that the submerged renewable storage system would be feasible, and the profits ranging from 15 Million Euro to 29 Million Euro can be achieved at the chosen location, towards the Swedish side of the Baltic sea. Although, in a real life scenario it is assumed that only up to half of the profits obtained in the results would be achievable. The results also show that, the Pump/Turbine with a high turbine efficiency and lower pump efficiency, generated better profits, compared to a Pump/Turbine running with a higher pump efficiency and lower turbine efficiency. An attempt to increase the round-trip efficiency by adding a multi stage submersible pump, resulted in additional ICC and LCC, which saw a decrease in profits.
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Bray, Laura. "Preparing for offshore renewable energy development in the Mediterranean." Thesis, University of Plymouth, 2017. http://hdl.handle.net/10026.1/10099.

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The development of offshore wind farms and marine renewable energy devices in the Mediterranean is central to both national, and international, energy strategies for countries bordering the Mediterranean Sea. The ecological impacts of marine renewable energy development in the Mediterranean region, although essential for policy makers, are as yet unknown. The Northern Adriatic is identified as a plausible site for offshore wind farm development. Using the wider region (Adriatic and Northern Ionian) as a case study, this thesis examines the likely impact to the marine environment if an offshore wind farm is established. Site suitability, based on wind speed, bathymetry, and larvae connectivity levels are investigated along with the plausibility of the turbines operating as artificial reefs in the area. As offshore wind farms may alter the larval connectivity and supply dynamics of benthic populations, a connectivity map was constructed to identify areas of high and low connectivity in the Adriatic Sea. The Puglia coast of Italy is a likely larval sink, and displays some of the highest connectivity within the region, suggesting potential inputs of genetic materials from surrounding populations. Considering offshore wind farms could operate as artificial reefs, an in-situ pilot project was established to simulate the presence of wind turbines. Macroinvertebrates colonized the new substrata within the first few months but were lower in abundance when compared to a natural hard substrata environment. Time, turbine location, and the material used for turbine construction all affected the macro-invertebrate communities. In addition, fish abundances, and diversity were lower around the simulated OWF foundations in comparison to a natural hard substrata environment, and no increases in fish abundance occurred around the simulated turbines when compared to reference sites of soft substrata. This observation was validated with the use of an ecosystem modelling software (Ecopath with Ecosim), which simulated the overall ecosystem level impacts that would occur if 50 offshore monopile wind turbines were introduced to the Northern Ionian and colonized by macroinvertebrate communities. When compared to the baseline scenario (no simulated introduction of an OWF), the introduction of new habitat had no discernible impacts to the structure or functioning of the marine ecosystem. Noticeable changes to the ecosystem were only apparent if fishing restrictions were enforced in parallel with the simulated offshore wind farm; the ecosystem appears to become more structured by top down predation. In addition seabirds are also impacted by the reduction of fishing discards as a food source. These results are the first attempt to quantify the suspected benefits of offshore wind farms operating as de-facto marine protected areas.
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Cotter, Oliver. "Installation of suction caisson foundations for offshore renewable energy structures." Thesis, University of Oxford, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.534163.

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Perkins, Eben. "Shaping Our Energy Future: Lessons from Maine's Offshore Wind Energy Development Plans." Scholarship @ Claremont, 2011. http://scholarship.claremont.edu/pomona_theses/94.

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Maine is at a crossroads in its energy future. With 80 percent of homes in the state heated by oil, the highest percentage in the country, Mainers find themselves addicted to imported energy and without a renewable powered heating alternative for the long, harsh winters. Enter offshore wind into the equation. A relatively unknown technology in the United States, offshore wind farms are currently powering one million homes in Europe. Furthermore, the Gulf of Maine has world class wind resources that could potentially provide double the power production of the state’s current peak electricity demand. Through eight weeks of research conducted in Portland, Maine, which consisted of a literature review and stakeholder interviews, I have identified and focused on the key opportunities and obstacles to successful offshore wind energy development in Maine in the short and long term.
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Книги з теми "Offshore renewable energy systems"

1

Siddiqui, Omar, Roger Bedard, and George Hagerman. System level design, performance and costs for San Francisco California Pelamis offshore wave power plant. San Francisco, Calif: EPRI, 2004.

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Siddiqui, Omar, Roger Bedard, and George Hagerman. System level design, performance and costs for San Francisco California Energetech offshore wave power plant. San Francisco, Calif: EPRI, 2004.

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Perelmuter, Viktor. Renewable Energy Systems. Boca Raton : Taylor & Francis, CRC Press, 2017.: CRC Press, 2016. http://dx.doi.org/10.1201/9781315316246.

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Rekioua, Djamila. Hybrid Renewable Energy Systems. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-34021-6.

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Rigatos, Gerasimos. Intelligent Renewable Energy Systems. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-39156-4.

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Twigg, Emily, ed. Atlantic Offshore Renewable Energy Development and Fisheries. Washington, D.C.: National Academies Press, 2018. http://dx.doi.org/10.17226/25062.

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Ruin, Sven, and Göran Sidén. Small-Scale Renewable Energy Systems. Leiden, The Netherlands: CRC Press/Balkema is an imprint of: CRC Press, 2019. http://dx.doi.org/10.1201/9780429020391.

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Infield, D. G. Renewable energy in power systems. Chichester, England: John Wiley & Sons, 2008.

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Stolten, Detlef, and Viktor Scherer, eds. Transition to Renewable Energy Systems. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2013. http://dx.doi.org/10.1002/9783527673872.

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Ocłoń, Paweł. Renewable Energy Utilization Using Underground Energy Systems. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-75228-6.

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Частини книг з теми "Offshore renewable energy systems"

1

Dalén, Göran. "Offshore Wind Power." In Renewable Energy Systems, 1339–59. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-5820-3_81.

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Manwell, James F. "Offshore Wind Energy Technology Trends, Challenges, and Risks." In Renewable Energy Systems, 1306–38. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-5820-3_697.

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Infield, David. "Offshore Wind Power." In Transition to Renewable Energy Systems, 265–81. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2013. http://dx.doi.org/10.1002/9783527673872.ch15.

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Nichita, Cristian, and Brayima Dakyo. "Conversion Systems for Offshore Wind Turbines." In Marine Renewable Energy Handbook, 123–72. Hoboken, NJ USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118603185.ch6.

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Li, G. Q., and P. Stansby. "A general computing platform for offshore renewable energy systems (OREGEN)." In Trends in Renewable Energies Offshore, 807–15. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003360773-90.

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Pasta, E., G. Papini, N. Faedo, G. Mattiazzo, and J. V. Ringwood. "On optimization-based strategies in data-driven control of wave energy systems." In Trends in Renewable Energies Offshore, 401–9. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003360773-46.

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Delgado, F., G. Lavidas, and K. Blok. "Wave energy and the European transmission system." In Trends in Renewable Energies Offshore, 17–23. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003360773-3.

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Said, H. A., and J. V. Ringwood. "Low voltage ride-through capability enhancement of a grid-connected wave energy conversion system." In Trends in Renewable Energies Offshore, 267–75. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003360773-31.

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Farrugia, Robert N., Tonio Sant, and Cedric Caruana. "Integrating Deep Offshore Wind with Pumped Hydro Storage in a Central Mediterranean Archipelago’s Electricity Generation System." In Mediterranean Green Buildings & Renewable Energy, 325–40. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-30746-6_23.

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Spick, Ryan J., and James A. Walker. "Deep Learning for Wave Height Classification in Satellite Images for Offshore Wind Access." In Data Analytics for Renewable Energy Integration. Technologies, Systems and Society, 83–93. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-04303-2_6.

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Тези доповідей конференцій з теми "Offshore renewable energy systems"

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Adams, N., D. Ranford, P. Grosse, and J. Armstrong. "A Systems Approach to Tidal Array Optimisation." In Marine Renewable & Offshore Wind Energy. RINA, 2010. http://dx.doi.org/10.3940/rina.mre.2010.12.

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Recalde, Luis, Hong Yue, William Leithead, Olimpo Anaya-Lara, Hongda Liu, and Jiang You. "Hybrid Renewable Energy Systems Sizing for Offshore Multi-Purpose Platforms." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-96017.

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Abstract Integrating marine renewables and aquaculture is a complex task. The generated power of each renewable technology depends on its source cycle (wind, wave, solar PV), leading to periods of zero power production. On the other side, aquaculture farms require smooth and stable power supply since any power shortage can lead to the loss of the entire farm production. This paper illustrates the sizing of a hybrid energy system (wind,solar PV, energy storage) to power up the aquaculture farm. The sizing is based on available commercial technology and the system is mounted on a single multi-purpose platform. Reliability is improved by considering device redundancies. Such hybrid system has not been considered before for aquaculture farms. System rough sizing, based on simple online renewable energy calculators, is used to select existing renewable technologies and HOMER Pro simulation software is used to evaluate the technical and economic feasibility of the microgrid for all possible combinations of the technology selected and perform sensitivity analysis on wind turbine tower height, battery state of charge and solar PV panels reflectance. The optimisation is subject to combined dispatch strategy and net present cost.
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Muk-Pavic, E., and H. Vargas. "O&M (Operation & Maintenance) Access Systems For 3rd Generation Windfarms." In Marine Renewable & Offshore Wind Energy. RINA, 2010. http://dx.doi.org/10.3940/rina.mre.2010.21.

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Cribbs, A. R., G. R. Kärrsten, J. T. Shelton, R. S. Nicoll, and W. P. Stewart. "Mooring System Considerations for Renewable Energy Standards." In Offshore Technology Conference. Offshore Technology Conference, 2017. http://dx.doi.org/10.4043/27870-ms.

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Capocci, Romano, Gerard Dooly, and Daniel Toal. "Offshore renewable energy systems: Solutions for reduction in operational costs." In 2017 Twelfth International Conference on Ecological Vehicles and Renewable Energies (EVER). IEEE, 2017. http://dx.doi.org/10.1109/ever.2017.7935940.

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Nassar, Ibrahim, Ibrahim Elsayed, and Mahmoud Abdella. "Optimization And Stability Analysis Of Offshore Hybrid Renewable Energy Systems." In 2019 21st International Middle East Power Systems Conference (MEPCON). IEEE, 2019. http://dx.doi.org/10.1109/mepcon47431.2019.9007963.

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Pimentel, Juliano, Robin Slater, Andrew Grant, Rune Vesterkjær, Truls Normann, Rajeev Kothari, and Johan Sandberg. "A Road Map for Renewable Energy Integration with Subsea Processing Systems." In SPE Offshore Europe Conference & Exhibition. SPE, 2021. http://dx.doi.org/10.2118/205433-ms.

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Abstract This paper proposes a road map for the integration of renewable energy supply to power subsea processing systems. To replace the traditional power supply, like fossil fuel-based generators or grid power, a wind turbine generator (WTG) operating on a islanded mode has been introduced and discussed. A review of the state of the art of WTGs is performed, primarily focused on power and controls aspects, with identification of the main technological gaps left to achieve wind-powered subsea processing. To fully assess the renewable energy integration and current gaps, a study case is proposed which addresses a subsea compression train powered by offshore wind. A thorough analysis is conducted, with meteorological conditions based on the NCS (Norwegian Continental Shelf), where gas line packing is proposed as an innovative means of energy storage. Finally, an economic analysis as well as a CO2 emission estimate is presented to demonstrate the benefits of the proposed road map. Some further discussions and conclusions are presented as well as some propositions for future works.
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Rao, Shivaprakash Chandrashekar. "Evaluation of Offshore Renewable Energy for Cluster Benefits." In Offshore Technology Conference Asia. OTC, 2022. http://dx.doi.org/10.4043/31544-ms.

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Abstract The urgency to mitigate climate change is increasing the rate of transformation in energy supply systems towards a low carbon future to ensure global temperature rise is limited to 1.5 Deg. Existing offshore energy technologies were examined through the lens of cluster benefits. Offshore renewable technologies considered were Offshore Wind, Floating Solar, Wave Energy, Tidal Energy and Offshore Thermal Energy (OTEC). The theory of underpinning of clusters, evolution, benefits, and challenges were reviewed. To corroborate the literature review, a pilot survey was sent to participants in industry which commented and highlighted their awareness of certain available technologies. The perceived benefits of clustering included the ability to achieve economies of scale whilst challenges remained around permitting and obtaining social licences. Based on the literature review and survey, a theoretical framework has been proposed to evaluate offshore energy cluster benefits. There is scope to further this research with a larger sample size and diversity of participants to strengthen the framework. It was noted that geospatial hard constraints and policies could be important framing factors for cluster formation in countries of interest. Country specific cluster examination would bring more specificity, depth and application and should be an area of future research.
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Anglani, Norma, Salvatore R. Di Salvo, Giovanna Oriti, and Alexander L. Julian. "Renewable Energy Sources and Storage Integration in Offshore Microgrids." In 2020 IEEE International Conference on Environment and Electrical Engineering and 2020 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe). IEEE, 2020. http://dx.doi.org/10.1109/eeeic/icpseurope49358.2020.9160760.

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Ewing, Fraser J., Philipp R. Thies, Benson Waldron, Jonathan Shek, and Michael Wilkinson. "Reliability Prediction for Offshore Renewable Energy: Data Driven Insights." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-62281.

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Accurately quantifying and assessing the reliability of Offshore Renewable Energy (ORE) devices is critical for the successful commercialisation of the industry. At present, due to the nascent stage of the industry and commercial sensitivities there is very little available reliability field data. This presents an issue: how can the reliability of ORE’s be accurately assessed and predicted with a lack of specific reliability data? ORE devices largely rely on the assessment of surrogate data sources for their reliability assessment. To date there are very few published studies that empirically assess the failure rates of offshore renewable energy devices [1]. The applicability of surrogate data sources to the ORE environment is critical and needs to be more thoroughly evaluated for a robust ORE device reliability assessment. This paper tests two commonly held assumptions used in the reliability assessment of ORE devices. Firstly, the constant failure rate assumption that underpins ORE component failure rate estimations is addressed. Secondly, a model that is often used to assess the reliability of onshore wind components, the Non-Homogeneous Poisson Power Law Process (PLP) model is empirically assessed and trend tested to determine its suitability for use in ORE reliability prediction. This paper suggests that pitch systems, generators and frequency converters cannot be considered to have constant failure rates when analysed via nonrepairable methods. Thus, when performing a reliability assessment of an ORE device using non-repairable surrogate data it cannot always be assumed that these components will exhibit random failures. Secondly, this paper suggests when using repairable system methods, the PLP model is not always accurate at describing the failure behaviour of onshore wind pitch systems, generators and frequency converters whether they are assessed as groups of turbines or individually. Thus, when performing a reliability assessment of an ORE device using repairable surrogate data both model choice and assumptions should be carefully considered.
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Звіти організацій з теми "Offshore renewable energy systems"

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Elliott, Dennis, Caitlin Frame, Carrie Gill, Howard Hanson, Patrick Moriarty, Mark Powell, William J. Shaw, Jim Wilczak, and Jason Wynne. Offshore Resource Assessment and Design Conditions: A Data Requirements and Gaps Analysis for Offshore Renewable Energy Systems. Office of Scientific and Technical Information (OSTI), March 2012. http://dx.doi.org/10.2172/1219742.

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Helms, C. R., K. J. Cho, John Ferraris, Ken Balkus, Yves Chabal, Bruce Gnade, Mario Rotea, and John Vasselli. Electrical Energy Storage for Renewable Energy Systems. Office of Scientific and Technical Information (OSTI), August 2012. http://dx.doi.org/10.2172/1173064.

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Kerschner, Harrison. Integrated Renewable Energy Systems - CRADA 557. Office of Scientific and Technical Information (OSTI), May 2022. http://dx.doi.org/10.2172/1899619.

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McGowan, Jon G., James F. Manwell, and Matthew A. Lackner. Offshore Wind Energy Systems Engineering Curriculum Development. Office of Scientific and Technical Information (OSTI), December 2012. http://dx.doi.org/10.2172/1233555.

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Author, Not Given. Battery storage for supplementing renewable energy systems. Office of Scientific and Technical Information (OSTI), January 2009. http://dx.doi.org/10.2172/1216656.

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Deline, Chris, and Geoff Dann. Renewable Energy, Photovoltaic Systems Near Airfields. Electromagnetic Interference. Office of Scientific and Technical Information (OSTI), April 2015. http://dx.doi.org/10.2172/1215061.

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Bragg-Sitton, Shannon, Richard Boardman, Mark Ruth, Owen Zinaman, Charles Forsberg, and John Collins. Integrated Nuclear-Renewable Energy Systems: Foundational Workshop Report. Office of Scientific and Technical Information (OSTI), August 2014. http://dx.doi.org/10.2172/1170315.

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Elgqvist, Emma M., Katherine H. Anderson, Dylan S. Cutler, Nicholas A. DiOrio, Nicholas D. Laws, Daniel R. Olis, and H. A. Walker. Optimizing Storage and Renewable Energy Systems with REopt. Office of Scientific and Technical Information (OSTI), December 2017. http://dx.doi.org/10.2172/1415353.

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9

Dann, Geoff, and Chris Deline. Renewable Energy, Photovoltaic Systems Near Airfields: Electromagnetic Interference. Fort Belvoir, VA: Defense Technical Information Center, April 2015. http://dx.doi.org/10.21236/ada627632.

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Larson, Kyle B., Jerry D. Tagestad, Casey J. Perkins, Matthew R. Oster, M. Warwick, and Simon H. Geerlofs. A Technical and Economic Optimization Approach to Exploring Offshore Renewable Energy Development in Hawaii. Office of Scientific and Technical Information (OSTI), September 2015. http://dx.doi.org/10.2172/1262475.

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