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Academic literature on the topic 'Wind power – Case studies'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Wind power – Case studies"

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Badrzadeh, Babak, Martin Hogdahl Zamastil, Nand K. Singh, Henrik Breder, Kailash Srivastava, and Muhamad Reza. "Transients in Wind Power Plants—Part II: Case Studies." IEEE Transactions on Industry Applications 48, no. 5 (September 2012): 1628–38. http://dx.doi.org/10.1109/tia.2012.2209193.

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Guenoukpati, Agbassou, Adekunlé Akim Salami, Mawugno Koffi Kodjo, and Kossi Napo. "Estimating Weibull Parameters for Wind Energy Applications using Seven Numerical Methods: Case studies of three costal sites in West Africa." International Journal of Renewable Energy Development 9, no. 2 (February 19, 2020): 217–26. http://dx.doi.org/10.14710/ijred.9.2.217-226.

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In this study, the effectiveness of seven numerical methods is evaluated to determine the shape (K) and scale (C) parameters of Weibull distribution function for the purpose of calculating the wind speed characteristics and wind power density. The selected methods are graphical method (GPM), empirical method of Justus (EMJ), empirical method of Lysen (EML), energy pattern factor method (EPFM), maximum likelihood method (MLM) moment method (MOM) and the proposed. Hybrid method (HM) derived from EPFM and EMJ. The purpose is to identify the most appropriate method for computing the mean wind speed, wind speed standard deviation and wind power density for different costal locations in West Africa. Three costal sites (Lomé, Accra and Cotonou) are selected. The input data was collected, from January 2004 to December 2015 for Lomé site, from January 2009 to December 2015 for Accra site and from January 2009 to December 2012 for Cotonou. The results indicate that the precision of the computed mean wind speed, wind speed standard deviation and wind power density values change when different parameters estimation methods are used. Five of them which are EMJ, EML, EPF, MOM, ML, and HM method present very good accuracy while GPM shows weak ability for all three sites. ©2020. CBIORE-IJRED. All rights reserved
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Wang, Fa, and Mario Garcia-Sanz. "Wind farm cooperative control for optimal power generation." Wind Engineering 42, no. 6 (June 6, 2018): 547–60. http://dx.doi.org/10.1177/0309524x18780377.

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The power generation of a wind farm depends on the efficiency of the individual wind turbines of the farm. In large wind farms, wind turbines usually affect each other aerodynamically at some specific wind directions. Previous studies suggest that a way to maximize the power generation of these wind farms is to reduce the generation of the first rows wind turbines to allow the next rows to generate more power (coordinated case). Yet, other studies indicate that the maximum generation of the wind farm is reached when every wind turbine works at its individual maximum power coefficient CPmax (individual case). This article studies this paradigm and proposes a practical method to evaluate when the wind farm needs to be controlled according to the individual or the coordinated case. The discussion is based on basic principles, numerical computations, and wind tunnel experiments.
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Sarkar, Moumita, Müfit Altin, Poul E. Sørensen, and Anca D. Hansen. "Reactive Power Capability Model of Wind Power Plant Using Aggregated Wind Power Collection System." Energies 12, no. 9 (April 27, 2019): 1607. http://dx.doi.org/10.3390/en12091607.

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This article presents the development of a reactive power capability model for a wind power plant (WPP) based on an aggregated wind power collection system. The voltage and active power dependent reactive power capability are thus calculated by using aggregated WPP collection system parameters and considering losses in the WPP collection system. The strength of this proposed reactive power capability model is that it not only requires less parameters and substantially less computational time compared to typical detailed models of WPPs, but it also provides an accurate estimation of the available reactive power. The proposed model is based on a set of analytical equations which represent converter voltage and current limitations. Aggregated impedance and susceptance of the WPP collection system are also included in the analytical equations, thereby incorporating losses in the collection system in the WPP reactive power capability calculation. The proposed WPP reactive power capability model is compared to available methodologies from literature and for different WPP topologies, namely, Horns Rev 2 WPP and Burbo Bank WPP. Performance of the proposed model is assessed and discussed by means of simulations of various case studies demonstrating that the error between the calculated reactive power using the proposed model and the detailed model is below 4% as compared to an 11% error in the available method from literature. The efficacy of the proposed method is further exemplified through an application of the proposed method in power system integration studies. The article provides new insights and better understanding of the WPPs’ limits to deliver reactive power support that can be used for power system stability assessment, particularly long-term voltage stability.
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Romanic, Djordje, Ashkan Rasouli, and Horia Hangan. "Urban wind resource assessment in changing climate: Case study." Wind Engineering 41, no. 1 (August 1, 2016): 3–12. http://dx.doi.org/10.1177/0309524x16653486.

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Urban wind resource assessment in changing climate has not been studied so far. This study presents a methodology for microscale numerical modelling of urban wind resource assessment in changing climate. The methodology is applied for a specific urban development in the city of Toronto, ON, Canada. It is shown that the speed of the southwest winds, that is, the most frequent winds increased for .8 m s−1 in the period from 1948 to 2015. The generated wind energy maps are used to estimate the influences of climate change on the available wind energy. It is shown that the geometry of irregularly spaced and located obstacles in urban environments has to be taken into consideration when performing studies on urban wind resource assessment in changing climate. In the analysed urban environment, peak speeds are more affected by climate change than the mean speeds.
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Arslan, Hilal, Hakki Baltaci, Bulent Oktay Akkoyunlu, Salih Karanfil, and Mete Tayanc. "Wind speed variability and wind power potential over Turkey: Case studies for Çanakkale and İstanbul." Renewable Energy 145 (January 2020): 1020–32. http://dx.doi.org/10.1016/j.renene.2019.06.128.

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Almohaimeed, Sulaiman A., and Mamdouh Abdel-Akher. "Power Quality Issues and Mitigation for Electric Grids with Wind Power Penetration." Applied Sciences 10, no. 24 (December 10, 2020): 8852. http://dx.doi.org/10.3390/app10248852.

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Large penetration of wind energy systems into electric-grids results in many power quality problems. This paper presents a classification of power quality issues, namely harmonics and short-duration voltage variation observed due to the integration of wind power. Additionally, different techniques and technologies to mitigate the effect of such issues are discussed. The paper highlights the current trends and future scopes in the improvement of the interconnection of wind energy conversion systems (WECSs) into the grid. As the voltage variation is the most severe power quality issue, case studies have been presented to investigate this problem using steady-state time-series simulations. The standard IEEE test system namely IEEE 123-node test feeder and IEEE 30-node grid are solved under different operating conditions with wind power penetration. Typical daily load profiles of a substation in Riyadh, Saudi Arabia, and an intermittent wind power generation profile are used in all case studies. Mitigation of voltage variations due to wind intermittency is achieved using reactive power compensation of the interface inverter. The results show the effectiveness of these approaches to avoid voltage variation and excessive tap setting movements of regulators and keep the voltage within the desired operating conditions.
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Kirkegaard, Julia Kirch, and Koray Caliskan. "When socialists marketize: the case of China’s wind power market sector." Journal of Cultural Economy 12, no. 2 (December 21, 2018): 154–68. http://dx.doi.org/10.1080/17530350.2018.1544581.

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Gupta, Praghun, and Neeraj Gupta. "Estimation methods for wind power potential with practical case study." International Journal of Engineering, Science and Technology 14, no. 3 (August 30, 2022): 47–55. http://dx.doi.org/10.4314/ijest.v14i3.6s.

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The potential at any location of the world for wind power must be appraised before it can be used effectively. The current state of wind resource assessment studies is provided in order to find appropriate methodologies. The Weibull distribution is a two- or three-parameter distribution function by which the wind speed's frequency distribution can be fitted properly . This set of curves has been proven to fit wind speed readings extremely well. The Maximum likelihood method, the Modified maximum likelihood method, Error of approximation, Method of Moment and the Energy pattern factor method are all offered as methods for estimating the parameters of the Weibull wind speed distribution for wind energy analysis. A sample wind speed data set is used to demonstrate the use of each method, and statistical methods of analysis are used to compare the accuracy of each method. The research aids in identifying which method is most effective in finding Weibull distribution parameters and determining the wind energy resource. In grid-connected wind producing plants, wind power forecasting is crucial for demand-supply equilibrium. Many accurate and dependable weather forecasting models use a range of modern methodologies. The electricity prediction is primarily dependent on short-term to second-by-second forecasting, intermediate duration of 2-7 days and with long-term prediction and short-term duration of nearly 2 days, with the help of various models.
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Zagubień, Adam, and Katarzyna Wolniewicz. "Energy Efficiency of Small Wind Turbines in an Urbanized Area—Case Studies." Energies 15, no. 14 (July 21, 2022): 5287. http://dx.doi.org/10.3390/en15145287.

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This study aimed to determine whether the wind zone that characterizes a given area of the country in open area is reflected in the built-up area lying within the zone. Analysis included four Polish cities located in different wind zones. The two-parameter Weibull density distribution function was used to present the wind conditions at each location. Two 3 kW VAWT devices were selected to evaluate the productivity of wind turbines at the locations analyzed. It was shown that the wind zones characterizing the wind potential of a region in an open area have no significant influence on the wind conditions in the built-up area located in that area. It was determined that the study location’s did not exhibit wind potential that could be economically justified by a wind turbine. WTs in the city do not reach their nominal productivity. A decisive advantage of very light winds was observed (up to 2 m/s) and a large proportion of so-called atmospheric calms. It was shown that the installation of small wind turbines in an urbanized area requires a minimum of annual wind measurements at the exact location and height of each future turbine planned.
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Dissertations / Theses on the topic "Wind power – Case studies"

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Krajnovic, Tamara. "Multi-level governance and wind power construction in Sweden : A case study of Norrköping and a current wind power construction plan." Thesis, Stockholms universitet, Statsvetenskapliga institutionen, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-192866.

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This case study focuses on wind power development in Norrköping using a multi-level governance approach. The aim is to examine the wind power decision-making process from the state to Norrköping municipality and to identify other factors that impact wind power development in the area. A textual analysis comparing national political party platforms and local parties' official stances and interviews has been used to achieve this study's goal. The study shows that the decision-making in vertical multi-level governance is both bottom-up and top-down. It also sheds light on a significant role the Swedish Armed Forces play in this process as an external actor. The study concludes that vertical multi-level governance, including municipal veto, although an important factor, needs to be complemented with external factors to see how it affects wind power development in Norrköping.
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Karatas, Bora, and Alina Macovei. "Managing Knowledge for Innovations in Wind Power Industry : A Case Study." Thesis, Jönköping University, Jönköping International Business School, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-12439.

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On one side Innovation, innovation systems and knowledge management are two topics have been discussed so much by scholars before. The advantages gained through knowledge management by fostering innovation which entails competitive advantage. On the other side, an emerging interest has represented the relationship between the renewable industry and environmental innovations. The oil crises and some forum discussion of environmental impact have fuelled the interest for Renewable Energy especially on wind energy. Most likely there hasn’t been any research knowledge management in wind power companies which is an emerging and terribly needs knowledge to innovate and bring more products. As a result there is a need to look more into the role of knowledge management in wind mill companies and explore how innovation can be triggered by successful knowledge management and how this process provide competitive advantage in wind power industry.

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Ryan, Todd M. "Case-Studies in the Economics of Ancillary Services of Power Systems in Support of High Wind Penetrations." Research Showcase @ CMU, 2016. http://repository.cmu.edu/dissertations/750.

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This thesis analyzes two potential means of mitigating the cost increase of ancillary services that is expected with the decarbonization of the U.S. electricity network. The first method, balancing area consolidation, addresses this cost rise by reducing the demand for ancillary services. This research quantifies the economic benefit of consolidation in the frequency regulation market by estimating the resulting reductions in frequency regulation requirements and cost. The results show that this policy leads to a reduction in frequency regulation cost of approximately $0.1 per MWh of total load. These results do not significantly change with the inclusion of 20% wind, suggesting that in the near term, wind’s interaction in the frequency regulation market is not a prime motivation for consolidation. This analysis does not consider all the benefits or costs of BA consolidation, and is not meant as an assessment of net-benefits. Though the results show consolidation could lead to an increase in emissions of some air pollutants, which suggest that there may be significant trade-offs associated with the decision to consolidate balancing areas. The second means of addressing the expected increase in ancillary services costs is to increase the supply of ancillary services by leveraging residential demand response. We developed methods that optimally schedule ancillary service capacity on demand response resources while accounting for the risk of customer response fatigue. The model is used to test the efficacy of hourly caps on demand response penetration in ancillary service markets. The results show that residential demand response could provide a significant portion of the total ancillary service requirements attributable to residential loads: between 50% and 75%. Hourly caps on demand response participation are shown to be economically inefficient. With a 25% market cap, residential demand response is scheduled to 6 provide 25% of the hourly total market value, while the risked-based optimization schedules residential demand response to provide 82% of the total value. Methods like the ones presented in this paper, that can appropriately weight the benefits and risks of committing residential demand response will be critical to efficiently and effectively use this resource for ancillary services.
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Lombard, Andrea. "Wind energy landscapes, place attachment and tourism in the Route 27/West Coast Region of South Africa." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/79872.

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Thesis (MA)--Stellenbosch University, 2013.
ENGLISH ABSTRACT: The West Coast Region (WCR) of the Western Cape Province in South Africa is earmarked for at least 13 windfarm developments. These proposed developments represent an investment in and a movement towards cleaner and alternative ways of energy generation. All developments that will alter the environment or landscape are usually received with some sort of opposition. The aim of this study was to determine whether or not the presence of wind turbines in the form of wind farms will have any affect on the sense of place of insiders of (residents) and outsiders (visitors) to the West Coast Region, the insiders’ attachment to their natural landscapes and the outsiders’ experiences of the region. In the context of multiple issues arising from a very complex discourse around the possible effects that the proposed windfarms are perceived to have in the WCR, this study approached the research topic from three perspectives of inquiry: (1) windfarms and people’s place attachment; (2) windfarms and landscape aesthetic and function interference; and (3) windfarms and its effect on tourism. The study area includes 15 towns of three subregions of the WCR, namely the Swartland, West Coast Peninsula and Bergrivier subregions. The research objectives are seven fold, namely (1) to establish a solid base and understanding of the concepts and constructs related to wind energy, landscape aesthetics and place attachment; (2) to review appropriate case studies reported in the international literature and apply relevant methodologies in this study; (3) investigate theories, types and models of public decision making to explore the degree to which these could be applied to windfarm support or objection in the WCR; (4) to critique current policies in windfarm establishment and discover whether and how these shape social objection to or support for windfarm development in the WCR; (5) to establish the perceptions and attitudes relating to wind turbines of three groups of actors (tourism industry, tourists and residents) in the WCR by conducting questionnaire surveys in 15 West Coast towns and villages and interpret these views in relation to the impacts of wind turbines on the local landscape; (6) to determine the insiders’ place attachments to the WCR, whether the presence of wind turbines will affect these attachments and whether their attachments influence decisions to support or oppose the proposed windfarm developments; and (7) to assess the extent to which the presence of wind turbines will affect the tourism value of the region. Primary data was further strengthened by semi-structured interviews, informal conversations and observation at public participation and specialized group meetings. Data was analysed using SPSS, Excel and ArcGIS. The findings indicate that respondents are concerned with issues related to the sustainability of the natural environment and that the residents of the WCR possess a strong sense of attachment to the region, but no clear indication was found that their place attachment serve as a reason for their opposition to the proposed windfarm developments. Although the support for windfarm development decreases from a national to a regional level and to the local level of in or close to the towns in which respondents reside, their opposition to windfarm development in the region cannot only be regarded as simple not-in-my-backyard (NIMBY) attitudes. Seventy-five per cent of the respondents regard the physical landscape of the WCR as very special, but would still support the development of windfarms in the region indicating that the respondents do not believe the construction of wind turbines in the WCR landscapes will influence the special character of landscapes negatively. There is no indication presently that the tourism industry would be affected negatively by windfarm development in the region as both residents and visitors do not believe that windfarms deter tourists from visiting certain areas and more than 90% of visitors indicated they would return to the WCR after a number of windfarms have been developed. It is recommended that a post-development impact study be conducted to determine the attitudes toward windfarm development in the WCR following the deployment of wind turbines.
AFRIKAANSE OPSOMMING: Die Weskus-streek in die Wes-Kaap provinsie van Suid-Afrika word geoormerk vir ten minste 13 windplaas ontwikkelinge. Hierdie voorgestelde ontwikkelinge verteenwoordig ‘n belegging in en ‘n beweging na skoner en alternatiewe maniere van energieopwekking. Alle ontwikkelinge wat die omgewing of landskap sal verander word gewoonlik ontvang deur ‘n mate van teenkanting. Die doel van hierdie studie was om te bepaal of die teenwoordigheid van windturbines in die vorm van windplase enige invloed op die plekbewustheid van inwoners van en besoekers aan die Weskus-streek, hulle gehegdheid aan die streek se natuurlike landskappe en besoekers se ervarings van die streek sal uitoefen. Binne die konteks van verskeie kwessies met hul oorsprong vanuit ‘n baie komplekse diskoers rondom die moontlike effekte wat vermeen word die voorgestelde windplase op die Weskus-streek sal hê, benader hierdie studie die navorsingsonderwerp vanuit drie navraagsperspektiewe: (1) windplase en mense se plekgehegdheid; (2) windplase en landskap estetiese en funksie steuring; en (3) windplase en die effek daarvan op toerisme. Die studie area sluit 15 dorpe uit drie substreke van die Weskus-streek in, naamlik die Swartland, Weskus Skiereiland en Bergrivier substreke. Die navorsingsdoelwitte is sewevoudig, naamlik (1) om ‘n konseptuele basis en verstaan van konsepte en konstrukte geassosieerd met windenergie-opwekking, landskap estetika en plekgehegdheid te kweek; (2) om toepaslike gevallestudies te hersien en sommige relevante metodologie vir die studie aan te wend; (3) om teorieë, tipes en modelle van publieke besluitneming te ondersoek ten einde te bepaal tot watter graad dit aangewend kan word tot windplaasondersteuning of teenkanting in die Weskus-streek; (4) om kritiek te lewer op huidige beleide van windplaasontwikkeling en te ontdek tot watter mate en hoe dit sosiale teenkanting of ondersteuning van windplaasontwikkeling in die Weskus-streek vorm; (5) om die persepsies en houdings van drie groepe deelnemers (die toerisme industrie, toeriste en inwoners) in die Weskus-streek te bepaal deur vraelysopnames in 15 Weskus dorpe te doen en hierdie sienings in verhouding met die impakte van windturbines op die plaaslike landskap te interpreer; (6) om die inwoners se plekgehegdheid tot die Weskus-streek te bepaal en of die teenwoordigheid van wind turbines hierdie gehegdheid sal affekteer en of hul gehegdheid besluitneming rakende die ondersteuning vir, of teenkanting teen, windplaasontwkkeling beïnvloed; en (7) om te bepaal tot watter mate die teenwoordigheid van windturbines die toerisme waarde van die streek sal affekteer. Primêre data is verder versterk deur semi-gestruktureerde onderhoude, informele gesprekke en waarneming by publieke deelname sessies en gespesialiseerde groepsvergaderings. Data is ontleed deur middel van SPSS, Excel en ArcGIS. Daar is bevind dat respondente besorg is oor kwessies rondom die volhoubaarheid van die natuurlike omgewing en dat die inwoners van die Weskus-streek ‘n sterk gehegtheid aan die streek het, maar geen definitiewe aanduiding is gevind dat hulle gehegdheid aan die streek as ‘n behoorlike rede vir hul teenstand teen die voorgestelde windplase aangevoer kan word nie. Alhoewel ondersteuning vir windplase afneem vanaf nasionaal na streeksvlak en die plaaslike vlak van binne of naby die dorp waar respondente woon, kan teenkanting teen die ontwikkeling van windplase in die streek nie slegs eenvoudig as ‘n nie-in-my-agterplaas houding (NIMAP) beskou word nie. Vyf-en-sewentig persent van die respondente ag die fisiese landskap van die Weskus-streek as baie spesiaal, maar ondersteun steeds windplaasontwikkeling in die streek wat aandui dat die respondente nie van mening is dat die oprigting van windturbines in die Weskus-streek landskappe die spesiale karakter van hierdie landskappe negatief sal beïnvloed nie. Daar is tans geen aanduiding dat die toerismebedryf negatief deur windplaasontwikkeling beïnvloed sal word nie aangesien beide inwoners en besoekers aangedui het dat hul nie van mening is dat windplase toeriste sal verhinder om sekere areas te besoek nie. Negentig persent van besoekers het aangedui dat hul steeds sal terugkeer na die Weskus-streek ná die ontwikkeling van ‘n aantal windplase. Dit word aanbeveel dat ‘n ná-ontwikkeling impakstudie onderneem word om die houdings jeens windplaasontwikkeling in die Weskus-streek ná oprigting van die turbines te ondersoek.
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Kumin, Enid C. "Ecosystem-Based Management and Refining Governance Of Wind Energy in the Massachusetts Coastal Zone: A Case Study Approach." Antioch University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=antioch1438439831.

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Sundberg, Gustav. "Resonant overvoltages caused by transformer energization and saturation : Two EMT case studies conducted using models of the grid in Stockholm and an off-shore wind farm." Thesis, Uppsala universitet, Elektricitetslära, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-453406.

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This thesis investigates the impact of resonant overvoltages and their origin. Series and parallel resonances are present in any electrical grid. The frequency of which this resonance occurs is called resonance frequency. For parallel resonance, which is mainly being studied in this thesis, a high impedance peak can be found at the resonance frequency. This impedance peak in conjunction with a harmonic rich current cause a kind of temporary overvoltages called resonant overvoltages. The harmonic content of the current is high following a fault clearing in the grid, due to transformer saturation. The resonance frequency is heavily dependent on the amount of reactance present in the grid, which entail that a change in reactance causes a change in the resonance frequency. The electromagnetic transient tool PSCAD has been used to investigate resonant overvoltages following transformer energization caused by faults and switching in Stockholm. Secondly, a model was created of a grid connecting off-shore wind power to the mainland via long AC submarine transmission cables. These cables, having a high capacitance, lower the resonance frequency. Faults in this model were simulated to investigate the phenomenon of resonant overvoltages in such a grid. This was especially interesting due to Swedens planned expansion of wind power in the Baltic sea. While resonant overvoltages were found in Stockholm they were not deemed significant due to their low magnitude and longevity. However, severe resonant overvoltages were found in the off-shore wind farm model. The worst resonant overvoltages had a maximum amplitude of the 2nd order harmonic voltage of 130 kV which, while eventually damped, were significant for up to 50 periods. Lastly, the phenomenon of an increased resonance frequency during the saturation of a transformer was studied. The most severe resonant overvoltages occured in a model where the frequency scans showed a resonance frequency of 98 Hz. Indicating, caution needs to be had during EMT-studies of resonant overvoltages while choosing what resonance frequency to study.
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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 coarse meteorological datasets give very accurate results, especially in combination with statistical post-processing. Advantages with our approach include a physical coupling to the weather and wind farm characteristics, over 30 year long, 5-minute resolution time series, freely and globally available input data and computational times in the order of minutes. In this thesis, I make the argument that our approach is generally preferable to using purely statistical models or linear scaling of historical measurements. In the variability studies in Papers V–VII, several IRE sources were considered. An important conclusion is that these sources and the load have very different variability characteristics in different frequency bands. Depending on the magnitudes and correlations of these fluctuation, different time scales will become more or less challenging to balance. With a suitable mix of renewables, there will be little or no increase in the needs for balancing on the seasonal and diurnal timescales, even for a fully renewable Nordic power system. Fluctuations with periods between a few days and a few months are dominant for wind power and net load fluctuations of this type will increase strongly for high penetrations of IRE, no matter how the sources are combined. According to our studies, higher capacity factors, more offshore wind power and overproduction/curtailment would be beneficial for the power system.
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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 with the typical power flows; thus causing a considerable impact on small signal stability. Moreover, wind power cannot be scheduled with the same certainty as conventional power plants and it is not really dispatchable. Therefore, rethinking the methods of power system operation becomes a necessity. The group of generators which are most suitable for manipulation in order to make way for new energy sources, e.g., wind generators that do not provide similar support to the system are identified through a novel method for ranking synchronous generators in a power system according to their contribution to angular and voltage stability. The method is based on the sensitivity analysis of electromechanical modes and takes into account the location of generators, their inertia, active and reactive power outputs and control functions. FACTS devices are utilized to alleviate any power transmission congestion while gaining maximum financial benefits. Economical considerations take into account the cost of generated active and reactive power, the cost of wind power integration, the cost of allocated FACTS devices along with their maintenance cost for a range of operating conditions in each load growth profile. The Identification of congested areas as well as determining the financial benefits relies heavily on the Optimal Load Flow (OPF) while Genetic Algorithms (GA) is assigned the task of allocating the FACTS devices. The Net Present Value (NPV) is integrated into the GA as an objective function; thus providing a good financial assessment of the location at hand. Finally, dynamic benefits of the allocated FACTS devices - where the tuning was accomplished through adaptive control - are analyzed to confirm their consistency on the wide range operating points across the different load growth stages.
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Westling, Suzette. "Wind Power Controversies : A Case Study in Ödeshög, Sweden." Thesis, Linköpings universitet, Institutionen för tema, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-81327.

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The interest in further expansion of wind power has increased significantly during the last decades, as it is an environmentally and financially competitive energy source. Wind power is an important part of achieving energy goals and climate commitments in several countries, not least in Sweden. The localisation of the wind turbines has, however, appeared to be controversial and local resistance occurs more frequently as the energy source expands. This creates a complex environmental conflict where various actors struggle to obtain differing goal settings. Such a situation occurred in Ödeshög municipality, when wind power entrepreneurs expressed their interests in establish wind turbines in forest and transition areas of the municipality. This thesis aims to emphasise how wind power expansion became such a controversial environmental conflict in Ödeshög. To be able to do this, the conflict is analysed from an Actor-Network Theory perspective. This theoretical framework has been used with the ambition to describe how the involved actors strategically have acted to possibly influence the outcome of the conflict. The situation in Ödeshög have much to say about how these conflicts occur and by learning from this situation several similar conflicts may be avoided.
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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 System 1 and System 2. Their schematics are shown in Fig. 1. Corresponding simulation models are built from fundamental blocks in the software PSCAD/EMTDC. Aggregated models are utilized in order to save computational time.System 1 consists of an offshore wind farm and an oil platform connected together in islanded operation. The oil platform contains an synchronous generator with an associated gas turbine and can adjust both active and reactive power quickly. The load consists of fixed-speed induction motors. The wind farm contains a back-to-back Voltage Source Converter (VSC) which is used for variable speed operation of the turbine. The converter is also used for voltage support to the system, and this functionality reduces voltage oscillations during disturbances. The most critical scenario investigated is to start a large induction motor. It is shown that the transmission cable may contribute to an increasing risk of voltage collapse during the start-up. Another critical event is when the wind power is suddenly disconnected, and the gas turbine has to adjust the power output quickly in order to avoid too large frequency deviations. The simulations show that a disconnection of the whole wind farm does not lead to critical operation or possible instability. This would not be the case in a system with slower control systems in the gas turbine and synchronous generator.System 2 consists of a VSC-HVDC connection between Kollsnes and the platform Troll A. This existing configuration is powering a gas compressor on the platform through a variable speed synchronous motor. This thesis proposes to integrate wind power on the DC-side of the Troll A VSC-terminal. The challenge is to inject wind power in a way such that the operation of the gas compressor is not disturbed. The proposed control system is working as intended, and the selected simulation cases show that the compressor system is not affected by the wind power. The DC voltage control system is able to maintain a constant voltage at the Troll terminal during normal operation. The wind farm reduces the losses in the HVDC-cable, and surplus wind power is sent to the land grid during low-load operation. The DC-voltage drops to 73 % of the rated value for 10 ms when the wind power is suddenly disconnected, but the duration is so short that it does not affect the gas compressor operation.The simulation results indicate that both configurations are feasible. However, the results are heavily dependent on the parameter data, and further research should put more efforts into gaining as correct values as possible. A sensitivity analysis is performed to System 1 as a guideline to which parameters that are most decisive, and therefore should be modeled most accurately. In addition, new simulation cases might reveal challenges that this thesis does not concern.
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Books on the topic "Wind power – Case studies"

1

Small wind: Planning & building successful installations, with case studies from the field. Waltham, MA: Academic Press, 2013.

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Wood, Terry B., and Nicholas C. Ross. The financial cost of wind energy: A multi-national case study. Hauppauge, NY: Nova Science Publishers, 2011.

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W, Rapp Kennan, and Aiello, Roberto (Roberto G.), eds. Greening the wind: Environmental and social considerations for wind power development in Latin America and beyond. Washington DC: World Bank, 2011.

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Palu, Ivo. Impact of wind parks on power system containing thermal power plants =: Tuuleparkide mõju soojuselektrijaamadega energiasüsteemile. Tallinn: TUI Press, 2009.

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Mello, Phillip De. Summary of recent wind integration studies: Experience from 2007 - 2010. Sacramento, California]: [California Energy Commission], 2012.

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1949-, Porter Gregory J., and Van Sciver, J. Andrew, 1968-, eds. Power quality solutions: Case studies for troubleshooters. Lilburn, Ga: Fairmont Press, 1999.

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Brian, Horne. The windfarms debate: The case for and against. Machynlleth: Centre for Alternative Technology, 1995.

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DiPippo, Ronald. Geothermal power plants: Principles, applications and case studies. Oxford: Elsevier, 2005.

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Lucenko, Kristina. The power of marketing innovation. New York, NY: Conference Board, 1999.

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O'Mara, W. Paul. Developing power centers. Washington, D.C: Urban Land Institute, 1996.

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Book chapters on the topic "Wind power – Case studies"

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Amenta, Carlo, and Carlo Stagnaro. "The Failures of the Entrepreneurial State: Subsidies to Renewable Energies in Europe." In International Studies in Entrepreneurship, 233–50. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-94273-1_13.

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AbstractSince the 1990s, the European Union has committed to gaining global leadership in clean energies such as solar photovoltaic and wind power. The joint amount of wind and solar capacity grew from 12.5 GW (or 2% of total installed electricity capacity) in 2000 to 261.2 GW in 2018 (or 28.1% of total installed electricity capacity). This came at a cost: In 2018 alone, the European Union (excluding the United Kingdom) spent €73 billion to subsidize green energy production. These financial aids were paid for by European energy consumers, mainly through levies charged on top of their power bills. According to proponents, these subsidies were needed to achieve sustainability while promoting the emergence of the European renewable industry. This chapter focuses on the European venture into renewable energies to answer the following three questions: (1) Was the subsidization of green electricity sources an effective environmental policy? (2) Was it an effective industrial policy? (3) Was it an effective social policy? The answer is: no, no, no.
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Mokhtari, Mohammed, Smail Zouggar, Nacer K. M’sirdi, and Mohamed Larbi Elhafyani. "Contribution to Power Maximization of an Asynchronous Wind Electric Water Pumping System Using Single Input Fuzzy Logic Controller and Modified Enhanced Perturb and Observe." In Advances in Smart Technologies Applications and Case Studies, 330–42. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-53187-4_37.

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Lopes, Fernando, João Sá, and João Santana. "Renewable Generation, Support Policies and the Merit Order Effect: A Comprehensive Overview and the Case of Wind Power in Portugal." In Studies in Systems, Decision and Control, 227–63. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-74263-2_9.

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Abu-Siada, Ahmed, Mohammad A. S. Masoum, Yasser Alharbi, Farhad Shahnia, and A. M. Shiddiq Yunus. "Applications of Unified Power Flow Controller in Wind Energy Conversion System." In Recent Advances in Renewable Energy, 17–48. UAE: Bentham Science Publishers Ltd., 2017. http://dx.doi.org/10.2174/9781681085425117020003.

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Unified power flow controller (UPFC) is one of the Flexible ac Transmission System (FACTS) devices that possess the ability of modulating both active and reactive power at the point of common coupling in four quadrant operational modes. This chapter illustrates UPFC topology, controllers with some case studies for various applications of UPFC in the DFIG-based WECS. New applications for UPFC are proposed to improve the overall performance of a DFIG-based WECS during voltage sag and voltage swell events at the grid side.
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Hosseini, Seyed Vahid, Ali Izadi, Seyed Hossein Madani, Yong Chen, and Mahmoud Chizari. "Design Procedure of a Hybrid Renewable Power Generation System." In Springer Proceedings in Energy, 155–62. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-63916-7_20.

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AbstractElectrification of small communities in districted off-grid area remains as a challenge for power generation industries. In the current study, various aspects of design of a standalone renewable power plant are examined and implemented in a case study of a rural area in Cape Town, South Africa. Estimating required electricity based on local demand profile, investment, operability, and maintenance costs of different generation technologies are studied in order to investigate their potential in an off-grid clean energy generation system. Several configurations of hybridization of solar system, wind, and micro gas turbine in combination with a battery are investigated. The Levelized Cost of Electricity (LCOE) and number of days with more than 3 h black out are compared.
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Abu-Siada, Ahmed. "Preface." In Recent Advances in Renewable Energy, i. UAE: Bentham Science Publishers Ltd., 2017. http://dx.doi.org/10.2174/9781681085425117020001.

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Due to the continuous resources’ reduction and cost increase of conventional fossil fuel along with the global trend to decrease the greenhouse effect, clean energy production from renewable sources has been given a global great concern. Among renewable energy sources, wind energy conversion systems have received a worldwide notable attention. It is expected that more than 10% of the global electricity demand will to be generated by wind energy conversion systems by the year 2020. During their early implementation stage, wind turbines were to be disconnected during abnormal and fault conditions within the electricity grid it is connected to. Owing to the fact that current wind installations supply a significant portion of the load demand, disconnecting windfarms may lead to business interruption and discontinuity of power supply to the end user. As such, transmission line operators have developed strict grid codes that wind turbine generator must meet to maintain its connection to support the grid during various fault conditions. To comply with these codes, flexible AC transmission systems have been widely used with current wind energy conversion systems to modulate reactive and/or active power at the point of common coupling of the wind turbine generator and the grid. This book presents the applications of various flexible ac transmission system devices to wind energy conversion systems. Devices such as unified power flow controllers, superconducting magnetic energy storage and static synchronous compensator are covered in this book. Topologies, control systems along with case studies of the aforementioned devices are presented and discussed. This book will be useful for postgraduate research students, upper-division electrical engineering students and practicing engineers.
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Knudsen, Magne. "Changing Tides: Temporal Dimensions of Low-Cost, High-Skill Fisheries in the Central Visayas, Philippines." In Case Studies in Biocultural Diversity from Southeast Asia, 21–42. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-6719-0_2.

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AbstractAt the southern mouth of the Tañon Strait—the body of water that separates the islands of Cebu and Negros in the Visayas region of the Philippines—small-scale fishing has always been challenging. Strong and complex sea currents make it difficult for fishers to utilise certain fishing gears. With a significant decline in the resource base and new regulations of the fisheries in recent decades, only fishers with advanced skills and fine-grained place-specific and calendric knowledge of the marine environment are able to catch enough fish, and the right kind of fish, to secure a decent return. Drawing on insights from cultural ecology, the chapter examines the skills and knowledges that fishers draw on to catch fish in this challenging environment. It gives particular attention to the temporal dimensions of the biocultural knowledge complex, showing how fishers’ knowledge of the links between sea currents, the lunar cycle and monsoon winds play into their decisions about where, when and how to fish. In addition to its direct livelihood significance, calendric knowledge also serves as a resource in the formation of identity as mananagat (fisherman) and authority and status within the fishing community. To further explain why some fishers are able to use their knowledge to make fishing a viable and legitimate livelihood and others are not, the last part of the chapter uses insights from political ecology to address issues of power and dynamics of exclusion in the fisheries.
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Nowzari, Raheleh. "Wind Power." In The Palgrave Encyclopedia of Global Security Studies, 1–7. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-74336-3_451-1.

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Ukil, Abhisek, Yew Ming Yeap, and Kuntal Satpathi. "Case Studies." In Power Systems, 355–87. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2977-1_12.

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Pulle, Duco W. J., Pete Darnell, and André Veltman. "VisSim Case Studies." In Power Systems, 289–370. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-20043-9_6.

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Conference papers on the topic "Wind power – Case studies"

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Feltes, J. W., B. S. Fernandes, and P. K. Keung. "Case studies of wind park modeling." In 2011 IEEE Power & Energy Society General Meeting. IEEE, 2011. http://dx.doi.org/10.1109/pes.2011.6039215.

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Yingzhong Gu, Le Xie, Brett Rollow, and Bo Hesselbaek. "Congestion-induced wind curtailment: Sensitivity analysis and case studies." In 2011 North American Power Symposium (NAPS 2011). IEEE, 2011. http://dx.doi.org/10.1109/naps.2011.6025167.

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Badrzadeh, Babak, Martin Hogdahl, Nand Singh, Henrik Breder, Kailash Srivastava, and Muhamad Reza. "Transients in Wind Power Plants - part II: Case studies." In 2011 IEEE Industry Applications Society Annual Meeting. IEEE, 2011. http://dx.doi.org/10.1109/ias.2011.6074406.

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Zuwei Yu. "Wind power & transportation - A bridge to energy security: Part II - Case studies." In 2008 IEEE International Conference on Electro/Information Technology (EIT 2008). IEEE, 2008. http://dx.doi.org/10.1109/eit.2008.4554287.

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Martin, R., I. Lazakis, and S. Barbouchi. "Analysis of Input Factors to Operations and Maintenance of two Offshore Wind Farm Case Studies; a Screening Process." In 3rd Renewable Power Generation Conference (RPG 2014). Institution of Engineering and Technology, 2014. http://dx.doi.org/10.1049/cp.2014.0831.

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Nemabakhsh, Ali, David Olinger, Islam Hussein, and Gretar Tryggvason. "Computational Modeling of Future Wind Power Installations." In ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajk2011-17001.

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Advanced wind power installations are likely to include floating wind turbines that can be placed far off-shore and airborne wind power generator that can harvest the wind at altitude beyond what tower-based turbines can reach. The feasibility of such installations does, however, depend on the ability to optimize the design to make it economical. Here we describe computational studies of the dynamics of floating wind turbine platform and planned examination of airborne energy generation devices. The computational approach for both systems relies on the use of an immersed boundary method for the moving platforms. For the floating wind turbine the free surface is captured by a level set approach. In addition to capturing the dynamics of a moving turbine tower and a flexible wing, the modeling of the tethers provides new challenges in both cases.
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Vallee, Francois, François Vallée, Jacques Lobry, and Olivier Deblecker. "Impact of wind power integration in the context of transmission systems adequacy studies with economic dispatch: Application to the Belgian case." In 2011 International Conference on Clean Electrical Power (ICCEP). IEEE, 2011. http://dx.doi.org/10.1109/iccep.2011.6036320.

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Zafar, Sayem, Mohamed Gadalla, and Mohammad Ismail Al-Naiser. "Performance Evaluation of a Novel Small Wind Turbine: UAE Case Study." In ASME 2016 Power Conference collocated with the ASME 2016 10th International Conference on Energy Sustainability and the ASME 2016 14th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/power2016-59242.

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A small personal use wind turbine (PWT) is studied and tested for power evaluation under different wind speed conditions. The wind turbine has small blades with FX 63137 airfoil. The blades are non-tapered and non-twisted to be economical and easy to manufacture. The blade span is 1.52 m which makes it small enough for personal domestic use yet big enough to produce sufficient power. The PWT size satisfies the requirements for rooftop small wind turbine for domestic power generation. The study is conducted in United Arab Emirates (UAE) and the PWT is installed in an open area to test under the natural conditions. Readings are recorded for wind speeds, generator RPMs, current and voltage for different timings and conditions. The PWT is tested at a variety of wind speeds to establish the operating range of the wind turbine. Using the calculated electrical power and wind power values, corresponding electrical efficiency is determined. Results are evaluated for electrical power and electrical efficiency against wind speed. The result suggests better performance and efficiency for continuous wind speed conditions. It also shows the PWT can effectively generate power under the conditions found in UAE.
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Suda, Sayaka, A. H. T. Shyam Kularathna, Shigeru Tabeta, and Ken Takagi. "A Case Study on Consensus Building With Fisheries for Offshore Wind-Power Generation in Japan." In ASME 2021 40th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/omae2021-62588.

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Abstract Local fishery unions have a significant authority over the use of marine space in Japan. Building consensus with them on marine space use have been identified as significant barriers to development of offshore wind projects. Creating non-monetary benefits and adding value to the local fisheries is a required strategy for getting fisheries consensus for future offshore wind projects. Previous studies have proposed and evaluated several such benefit creation options. However, there still remains uncertainty of the effectiveness of such benefit creation options. This study aims to compare the local residents’ and fisheries’ preference of the benefit creation options by using questionnaire surveys and stakeholder interviews in three areas. Those valid responses have been selected for the preference analysis by using the DS-AHP multi criteria decision making model. This study shows that project location and other regional differences are significant factors of general residents’ attitudes of offshore wind projects. On the other hand, fishers, the most important stakeholders, preferred added values related to their fishing industry. Additionally, regional location and fishing method is found to have an impact on their preference.
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Danneman, Eugene R., and Stephen J. Beuning. "Wind Integration: System and Generation Issues." In ASME 2010 Power Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/power2010-27128.

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Intermittent availability of wind and solar power will require increased dispatch flexibility of conventional power plants to supply voltage support, frequency control, regulation and spinning reserves (ancillary services for regulation). Deep load follow ramp cycling and on/off state cycling will cause irreversible damage to conventional coal power plants. That damage must be managed to optimize unit reliability, fuel, variable O&M, emissions and maintenance capital investment costs. Wind Resources will play an important role in Xcel Energy’s future resource portfolio. The high levels of wind energy forecasted to be on line by 2020 will likely lead our utility to back down operations at some base load resources and require greater unit dispatch flexibility. These studies helped identify and estimate costs due to wear-and-tear caused by varying generating unit operation. The next step will involve optimizing total system costs using several solutions.
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Reports on the topic "Wind power – Case studies"

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Fink, S., C. Mudd, K. Porter, and B. Morgenstern. Wind Energy Curtailment Case Studies: May 2008 - May 2009. Office of Scientific and Technical Information (OSTI), October 2009. http://dx.doi.org/10.2172/967925.

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Acker, T. IEA Wind Task 24 Integration of Wind and Hydropower Systems; Volume 2: Participant Case Studies. Office of Scientific and Technical Information (OSTI), December 2011. http://dx.doi.org/10.2172/1033024.

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DeCesaro, J., and K. Porter. Wind Energy and Power System Operations: A Review of Wind Integration Studies to Date. Office of Scientific and Technical Information (OSTI), December 2009. http://dx.doi.org/10.2172/970337.

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Flowers, L., and L. Miner-Nordstrom. Wind energy applications for municipal water services: Opportunities, situational analyses, and case studies. Office of Scientific and Technical Information (OSTI), January 2006. http://dx.doi.org/10.2172/1216743.

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Curtis, Taylor L., Aaron L. Levine, and Kathleen McLaughlin. Bureau of Reclamation Hydropower Lease of Power Privilege: Case Studies and Considerations. Office of Scientific and Technical Information (OSTI), May 2018. http://dx.doi.org/10.2172/1439274.

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Melber, B., A. Roussel, K. Baker, N. Durbin, P. Hunt, J. Hauth, C. Forslund, E. Terrill, and B. Gore. Staffing decision processes and issues: Case studies of seven US Nuclear Power Plants. Office of Scientific and Technical Information (OSTI), March 1994. http://dx.doi.org/10.2172/140906.

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Denholm, Paul, Joshua Novacheck, Jennie Jorgenson, and Matthew O'Connell. Impact of Flexibility Options on Grid Economic Carrying Capacity of Solar and Wind: Three Case Studies. Office of Scientific and Technical Information (OSTI), December 2016. http://dx.doi.org/10.2172/1336557.

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Denholm, Paul, Joshua Novacheck, Jennie Jorgenson, and Matthew O'Connell. Impact of Flexibility Options on Grid Economic Carrying Capacity of Solar and Wind: Three Case Studies. Office of Scientific and Technical Information (OSTI), December 2016. http://dx.doi.org/10.2172/1339345.

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Alderfer, B., M. Eldridge, and T. Starrs. Making connections: Case studies of interconnection barriers and their impact on distributed power projects. Office of Scientific and Technical Information (OSTI), July 2000. http://dx.doi.org/10.2172/755953.

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Stuart, J. G., A. D. Wright, and C. P. Butterfield. Considerations for an integrated wind turbine controls capability at the National Wind Technology Center: An aileron control case study for power regulation and load mitigation. Office of Scientific and Technical Information (OSTI), June 1996. http://dx.doi.org/10.2172/254974.

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