Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 145 for “"Wind farms"”.
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Subsynchronous Resonance in Wind Farms
Large-scale integration of wind farms in transmission networks has led to several challenges; one of which is the need for increased transmission capacity to transport a bulk amount of wind power. Series compensation is an established means of enhancing the power transfer capability of existing …
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Blade resolved simulation of wind farms
… blade-resolved CFD simulation of a wind farm using Tenasi. The intent is to reduce the overall cost by initializing the flow fields of the individual turbines in the wind farm using a steady state or an unsteady simulation of a single turbine. This is achieved by replicating the mesh …
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Siting Community Wind Farms: An Investigation of NIMBY
Wind energy is expanding rapidly in the United States as the nation\'s energy policy objectives increasingly focus on renewables. Public opinion polls show that a majority of Americans support wind energy development but actual wind farm projects often face intense local opposition. This dichotomy …
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Evaluating the Effect of Splitting Wind Farms in Multiple Sites and Developing a Model to Select the Best Locations to Install Wind Farms
As the large-scale wind power is connected to the grid, challenges are brought to the security and stability operation of the power system, and therefore it is very important to know how we can get more power from regional multiple wind sites by installing wind farms in them. Since there are many …
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Predicting Interference Patterns Between Offshore Wind Farms through Wake Analysis
… effect from a cluster of large-scale offshore wind turbines with the purpose of optimizing spacing between separate farms to avoid wake interference. Placing wind turbines within a field of disturbed flow decreases power output, and in some cases, threatens structural integrity. Unsteady …
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Applying cooperative control techniques to improve performance of wind farms
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-11 without embargo terms
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A numerical study of surface air temperature response to vertical mixing and momentum extraction by wind farms and the impacts of wind farms on mesoscale boundaries
Wind turbines have been shown to impact their local microclimate. With the increasing areal coverage of wind farms it has become increasingly important to answer scientific questions regarding these impacts. In this thesis, a high resolution numerical model is employed to explore the response of …
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Techno-economic analysis of green ammonia production using offshore wind farms
There is a great potential to reduce CO2 emissions by replacing hydrogen generated from fossil fuels with green hydrogen in ammonia production and replacing fossil fuels in the transportation sector with this green ammonia. The analysis of the current work evaluated a total of 8 different scenarios …
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Conceptual Design of Wind Farms Through Novel Multi-Objective Swarm Optimization
<p>Wind is one of the major sources of clean and renewable energy, and global wind energy has been experiencing a steady annual growth rate of more than 20% over the past decade. In the U.S. energy market, although wind energy is one of the fastest increasing sources of electricity generation (by …
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Human Factors in the Operation and Maintenance of Offshore Wind Farms
… in the operations and maintenance of offshore wind farms rarely account for the welfare of technicians and their ability to do work upon arrival. This creates uncertainties especially since current operational limits might make a wind farm accessible but vibrations from transits might be …
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Floating offshore wind farms : demand planning & logistical challenges of electricity generation
Floating offshore wind farms are likely to become the next paradigm in electricity generation from wind energy mainly because of the near constant high wind speeds in an offshore environment as opposed to the erratic wind speeds in their onshore counterparts. By using floaters adapted from oilrigs, …
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Modelling Extreme Forecast Errors in Wind Energy Using South African Wind Farms
Accurate wind energy forecasting has become crucial for preserving grid stability and guaranteeing a consistent power supply in the light of South Africa’s expanding shift to renewable energy. As they have a direct impact on scheduling, dispatch choices, and reserve allocation, extreme prediction …
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Analysis of Model-Free Control of Wind Farms Using Large-Eddy Simulations
Wind farms are clusters of wind turbines deployed over a relatively small area. During operations, the wake from upstream turbines may impinge on trailing turbines causing a decrease in power production. Wind farm control strategies aim at mitigating the effect of wake interactions. In this …
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Some decentralized optimization and control algorithms for the control of wind farms
… decentralized algorithms that can be applied to wind farm controls. Traditionally, wind farm control is comprised of the wind farm level control and the wind turbine level control. The wind farm level control is a centralized controller that takes the demands from the grid and generates operating …
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Economic analysis of an integrated generator-rectifier system for offshore wind farms
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-11 without embargo terms
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The potential for local community benefits from wind farms in South Africa
… goals. It focused specifically on the emerging wind sector in South Africa, drawing on the concept of community wind farms that have emerged in many other parts of the world such as England, Denmark and Canada.
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Control and operation of offshore wind farms connected with diode rectifier HVDC systems
… advantage of abundant space and more consistent wind speed, interest in offshore wind energy has significantly increased. To reduce the cost related to offshore wind power integration, this thesis investigates the control, modelling and operation of offshore wind farms connected with diode …
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The Impacts of Wind Farms on Cumulus Development in the Central Great Plains
… by the turbulent deformation of the plume by wind farms. A natural laboratory to study the impact of wind farms on cumulus formation is Iowa and Nebraska as these two states vary vastly in their wind power offerings. This study uses Geostationary Operational Environmental Satellite (GOES) …
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