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Displaying Results 1 - 25 of 62 on page 1 of 3
Marked
Mark
A Case Study of the Omani Electricity Network and Readiness for Solar Energy Integration
(2017)
Coyle, Eugene
A Case Study of the Omani Electricity Network and Readiness for Solar Energy Integration
(2017)
Coyle, Eugene
Abstract:
In this paper a study is made of the electricity network of the Sultanate of Oman. The electricity industry of Oman currently relies on almost 100% fossil fuels – with natural gas (97.5%) and diesel oil (2.5%) being the primary sources of electricity generation. This reliance is expected to change significantly in the coming years. Harnessing solar energy (and wind energy) will help to significantly reduce the country’s carbon emission footprint whilst enhancing intra-structural development and ensuring economic stability. Solar energy density levels in Oman are among the highest in the world. The country receives an extensive daily solar radiation of 5,500-6,000 Wh/m2 per day in July and 2,500- 3,000 Wh/m2 per day in January. With careful planning this energy rich resource may now be harnessed. In this context the regulatory environment in Oman has been gradually trans-forming to minimise the political and administrative barriers for the integration of renewable energies into the O...
https://arrow.dit.ie/sdar/vol5/iss1/4
Marked
Mark
A small - signal stability analysis of DFIG wind generation
(2011)
Vittal, Eknath; O'Malley, Mark; Keane, Andrew
A small - signal stability analysis of DFIG wind generation
(2011)
Vittal, Eknath; O'Malley, Mark; Keane, Andrew
Abstract:
Paper presented at the 8th International Workshop on Large-Scale Integration of Wind Power into Power Systems, 14-15 October 2009, Bremen, Germany
This paper examines the small-signal stability impacts of high penetrations of doubly-fed induction generator (DFIG) wind turbines on power systems. It provides a basic overview of small-signal stability concepts and then examines the response of DFIG generation to two local contingency event. Using the New England 39 bus test system, this paper will demonstrate the stability implications of DFIG turbines utilizing terminal voltage control and fixed power factor control in response to reactive and active power loss events. By implementing terminal voltage control strategies in DFIG wind turbines, system stability is improved and allows for increased levels of wind penetration levels while maintaining a high level of system security.
Science Foundation Ireland
Charles Parsons Energy Research Awards
Charles Parson. I...
http://hdl.handle.net/10197/3268
Marked
Mark
A spatial and temporal correlation analysis of aggregate wind power in an ideally interconnected Europe
(2017)
Malvaldi, A.; Weiss, S.; Infield, D.; Browell, J.; Leahy, Paul G.; Foley, Aoife M.
A spatial and temporal correlation analysis of aggregate wind power in an ideally interconnected Europe
(2017)
Malvaldi, A.; Weiss, S.; Infield, D.; Browell, J.; Leahy, Paul G.; Foley, Aoife M.
Abstract:
Studies have shown that a large geographic spread of installed capacity can reduce wind power variability and smooth production. This could be achieved by using electricity interconnections and storage systems. However, interconnections and storage are not totally flexible, so it is essential to understand the wind power correlation in order to address power system constraints in systems with large and growing wind power penetrations. In this study, the spatial and temporal correlation of wind power generation across several European Union countries was examined to understand how wind ‘travels’ across Europe. Three years of historical hourly wind power generation data from 10 countries were analysed. The results of the analysis were then compared with two other studies focused on the Nordic region and the USA. The findings show that similar general correlation characteristics do exist between European country pairs. This is of particular importance when planning and operating intercon...
http://hdl.handle.net/10468/3829
Marked
Mark
A study of optimal non-firm wind capacity connection to congested transmission systems
(2012)
Burke, Daniel J.; O'Malley, Mark
A study of optimal non-firm wind capacity connection to congested transmission systems
(2012)
Burke, Daniel J.; O'Malley, Mark
Abstract:
As wind is a low capacity factor source of power generation, a non-physically-firm connection strategy is key to its cost-effective and timely integration to presently constrained transmission networks. This paper therefore outlines the design and study of an optimal non-firm wind capacity allocation model. While a precise statistical representation of wind power variations and geographical inter-dependency requires a significant number of data samples, the structured very-large-scale linear programming problem that results is shown to be exploitable by the Benders’ decomposition scheme. Various wind capacity target levels are considered, and important sensitivity analyses performed for multiple load profiles, wind profiles, and fuel price parameter values. Interestingly, the optimal wind capacity allocation is found to be reasonably robust to sizeable load and fuel price deviations, and while the effect of a limited historical wind data profile is more influential, the associated c...
http://hdl.handle.net/10197/3584
Marked
Mark
A study of principal component analysis applied to spatially distributed wind power
(2012)
Burke, Daniel J.; O'Malley, Mark
A study of principal component analysis applied to spatially distributed wind power
(2012)
Burke, Daniel J.; O'Malley, Mark
Abstract:
Multivariate dimension reduction schemes could be very useful in limiting the number of random statistical variables needed to represent distributed wind power spatial diversity in transmission integration studies. In this paper, principal component analysis (PCA) is applied to the covariance matrix of distributed wind power data from existing Irish wind farms, with the eigenvector/eigenvalue analysis generating a lower number of uncorrelated alternative variables. It is shown that though uncorrelated, these wind components may not necessarily be statistically independent however. A sample application of PCA combined with multivariate probability discretization is also outlined in detail. In that case study, the capability of PCA to reduce the number and prioritize the order of the alternative statistical variables is key to potential wind power production costing simulation efficiency gains, when compared to exhaustive multiyear time series load flow investigations.
Science Fou...
http://hdl.handle.net/10197/3543
Marked
Mark
Adaptive post-processing of short-term wind forecasts for energy applications
(2011)
Sweeney, Conor; Lynch, Peter
Adaptive post-processing of short-term wind forecasts for energy applications
(2011)
Sweeney, Conor; Lynch, Peter
Abstract:
We present a new method of reducing the error in predicted wind speed, thus enabling better management of wind energy facilities. A numerical weather prediction model, COSMO, was used to produce 48 h forecast data every day in 2008 at horizontal resolutions of 10 and 3 km. A new adaptive statistical method was applied to the model output to improve the forecast skill. The method applied corrective weights to a set of forecasts generated using several post-processing methods. The weights were calculated based on the recent skill of the different forecasts. The resulting forecast data were compared with observed data, and skill scores were calculated to allow comparison between different post-processing methods. The total root mean square error performance of the composite forecast is superior to that of any of the individual methods.
Science Foundation Ireland
http://hdl.handle.net/10197/2892
Marked
Mark
An economic analysis of community preferences for wind farm development in Ireland
(2017)
Brennan, Noreen
An economic analysis of community preferences for wind farm development in Ireland
(2017)
Brennan, Noreen
Abstract:
The core thesis objectives are: the identification of the key attributes of wind farm development in Ireland and the measurement of community representation and setback distance on wind farm preferences; the establishment of the public’s opinion on development for export and the analysis of those who choose to forgo the financial benefits of production and select the status quo of no wind farm development. The first two chapters of this thesis establish the motivation behind this research and the theoretical frameworks underpinning this work. Chapter 3 presents the core choice modelling results including the community representative and setback attributes. Chapter 4 focusses on attitudes towards wind farm development for export combining developer and community focus groups and survey results and chapter 5 analyses those respondents who serially selected the status quo of no new wind farm development using survey results and a binomial logit model, with conclusions in chapter 6. My ...
http://hdl.handle.net/10379/6562
Marked
Mark
An end-user led approach for assessing the feasibility of small-scale wind energy projects
(2017)
Miu, Luciana M.; Hayes, Barry P.; Djokic, Sasa Z.
An end-user led approach for assessing the feasibility of small-scale wind energy projects
(2017)
Miu, Luciana M.; Hayes, Barry P.; Djokic, Sasa Z.
Abstract:
The successful realization of a wind energy project, i.e. a wind farm, wind plant or, in its simplest form, a single wind turbine generator, WTG, strongly depends on accurate assessment of wind energy resources at the target location. While larger wind energy projects include extensive wind resource measurements, this is typically not feasible for smallscale wind applications. This paper presents a simple linear regression model for evaluating wind energy resources at unmonitored sites, based on the correlational analysis of a limited number of sites where wind energy measurements are available. The methodology is illustrated on two regions in Scotland, where wind speed and wind direction measurements are publicly available from 26 UK Met Office stations. The presented approach requires only the coordinates of the enduser’s WTG location to estimate the available wind energy and incorporates a method to identify the best-fit WTGs for the calculated wind energy resource. For the selec...
http://hdl.handle.net/10379/6847
Marked
Mark
ANALYSIS OF A VARIABLE SPEED DOUBLE-FED INDUCTION GENERATOR WIND TURBINE DURING NETWORK VOLTAGE UNBALANCE CONDITIONS.
(2007)
Kearney, Joseph; Conlon, Michael
ANALYSIS OF A VARIABLE SPEED DOUBLE-FED INDUCTION GENERATOR WIND TURBINE DURING NETWORK VOLTAGE UNBALANCE CONDITIONS.
(2007)
Kearney, Joseph; Conlon, Michael
Abstract:
The behaviour of Double-Fed Induction Generators to supply network voltage unbalance is investigated. The paper shows the effects that voltage unbalance can have on a DFIG, using Matlab/Simulink. The results from simulations show that voltage unbalance affects both the induction generator and the rotor converter, due to the high unbalanced currents generated. The ability to modify the control strategy of a DFIG to compensate for voltage unbalance is outlined and simulations show the improvements to the performance of the DFIG.
https://arrow.dit.ie/engscheleart/219
Marked
Mark
Analysis of Compensation Techniques Applied to the Control of Converter Connected Synchronous Wind Turbines and DFIG’s During Grid Disturbances.
(2012)
Kearney, Joseph; Conlon, Michael; Coyle, Eugene
Analysis of Compensation Techniques Applied to the Control of Converter Connected Synchronous Wind Turbines and DFIG’s During Grid Disturbances.
(2012)
Kearney, Joseph; Conlon, Michael; Coyle, Eugene
Abstract:
This paper investigates control schemes to improve the performance of converter connected synchronous generators and DFIG’s to grid voltage unbalance and grid faults. Both the synchronous generator with a full converter and a DFIG are modelled in Matlab/Simulink. The control schemes of both turbines are modified to improve their performance during grid disturbances including grid voltage unbalance and single-phase faults. These disturbances are introduced into the models at specific times to analyse the performance of the wind generation systems. The performances of both systems to the grid disturbances are compared and the results are analysed.
https://arrow.dit.ie/engscheleart/226
Marked
Mark
Analysis of Converter Connected Synchronous Wind Turbines to Grid Disturbances.
(2011)
Kearney, Joseph; Conlon, Michael; Coyle, Eugene
Analysis of Converter Connected Synchronous Wind Turbines to Grid Disturbances.
(2011)
Kearney, Joseph; Conlon, Michael; Coyle, Eugene
Abstract:
This paper investigates the performance of synchronous generators to grid voltage unbalance and grid faults. A Model of a synchronous generator with a full converter is implemented in the SimPowerSystems toolbox in Matlab/Simulink. Methods to modify the converter control schemes to improve the synchronous generator systems response to grid voltage unbalance and grid faults are investigated. Grid faults including grid voltage unbalance, and line-to-ground faults are introduced into the model at specific times to analyse the performance of the wind generation system. Improvements in the performance of the synchronous generator WECS to the grid disturbances are illustrated.
https://arrow.dit.ie/engscheleart/225
Marked
Mark
Aspects of wind energy characteristics in transmission related optimisation models : invited panel discussion paper
(2012)
Burke, Daniel J.; O'Malley, Mark
Aspects of wind energy characteristics in transmission related optimisation models : invited panel discussion paper
(2012)
Burke, Daniel J.; O'Malley, Mark
Abstract:
Presented at the IEEE Power and Energy Society General Meeting, Detroit, USA, 24-29 July 2011
This invited panel paper discussion will outline a number of aspects of wind energy characteristics relevant to the optimal wind/transmission model formulation task. Optimal placement of wind capacity on a constrained transmission network is a typical example of this type of problem. In particular the relevance of advanced and computationally intensive stochastic unit commitment to the model formulation will be debated. Optimization constraint matrix structure and techniques to exploit it will be shown to be of considerable importance for this type of problem. The relative merits of different model dimensionality reduction schemes, either through multivariate component analysis and probability discretisation or indeed scenario reduction, will be discussed. A pragmatic acceptance of the imprecise impact of long-term power system uncertainties will be maintained throughout, and wherever p...
http://hdl.handle.net/10197/3542
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Mark
Base-load Cycling on a System with Significant Wind Penetration
(2010)
Denny, Eleanor
Base-load Cycling on a System with Significant Wind Penetration
(2010)
Denny, Eleanor
Abstract:
Certain developments in the electricity sector may result in suboptimal operation of base-load generating units in countries worldwide. Despite the fact they were not designed to operate in a flexible manner, increasing penetration of variable power sources coupled with the deregulation of the electricity sector could lead to these base-load units being shut down or operated at partload levels more often. This cycling operation would have onerous effects on the components of these units and potentially lead to increased outages and significant costs. This paper shows the serious impact increasing levels of wind power will have on the operation of base-load units. Those base-load units which are not large contributors of primary reserve to the system and have relatively shorter start-up times were found to be the most impacted as wind penetration increases. A sensitivity analysis shows the presence of storage or interconnection on a power system actually exacerbates base-load cycling...
http://hdl.handle.net/2262/55294
Marked
Mark
Combining Wind and Pumped Hydro Energy Storage for Renewable Energy Generation in Ireland
(2015)
Coburn, Alice; Walsh, Eilín; Solan, Patrick J.; McDonnell, Kevin
Combining Wind and Pumped Hydro Energy Storage for Renewable Energy Generation in Ireland
(2015)
Coburn, Alice; Walsh, Eilín; Solan, Patrick J.; McDonnell, Kevin
Abstract:
Ireland has one of the highest wind energy potentials in Europe. The intermittent nature of wind makes this renewable resource impractical as a sole source of energy. Combining wind energy with pumped hydro energy storage (PHES) can overcome this intermittency, consuming energy during low-demand periods and supplying energy for periods of high demand. Currently Ireland has a number of hydroelectric power plants and wind farms of various scales in operation. A feasibility study was conducted to investigate the potential of securing a reliable source of renewable energy by increasing the penetration of hydroelectric power by means of combined wind-PHES developments. The greatest wind potential is experienced along the western coast of Ireland and a number of sites were identified here which satisfied a minimum mean wind speed criterion of 10.5 ms−1. Each site was then further evaluated according to topographical requirements for PHES. All but two of the identified sites are immediatel...
http://hdl.handle.net/10197/6396
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Mark
Contending Expertise: An Interpretive Approach to (Re)conceiving Wind Power's 'Planning Problem'
(2016)
Lennon, Mick; Scott, Mark J.
Contending Expertise: An Interpretive Approach to (Re)conceiving Wind Power's 'Planning Problem'
(2016)
Lennon, Mick; Scott, Mark J.
Abstract:
We explore the complex and multidimensional nature of wind power's 'planning problem' by investigating the ways different knowledges and knowledge holders seek to accumulate authority over the 'facts' of a situation. This is undertaken through an interpretive analysis of how different parties to contentious wind farm debates in Ireland strived to mobilize contending realities wherein they were advantageously positioned as credible sources of knowledge. We advance a novel approach grounded in rhetorical theory that reveals and explains how the different parties to these debates deployed nuanced discursive strategies that constituted their character (ethos) by skilfully interlacing implicit and explicit portrayals of scientific objectivity (logos) with emotive subjectivity (pathos). In doing so, we identify the important role played by 'rescaling' in privileging and marginalizing different perspectives within both the contending discourses and the fo...
http://hdl.handle.net/10197/7837
Marked
Mark
Cost savings from relaxation of operational constraints on a power system with high wind penetration
(2015)
McGarrigle, Edward V.; Leahy, Paul G.
Cost savings from relaxation of operational constraints on a power system with high wind penetration
(2015)
McGarrigle, Edward V.; Leahy, Paul G.
Abstract:
Wind energy is predominantly a nonsynchronous generation source. Large-scale integration of wind generation with existing electricity systems, therefore, presents challenges in maintaining system frequency stability and local voltage stability. Transmission system operators have implemented system operational constraints (SOCs) in order to maintain stability with high wind generation, but imposition of these constraints results in higher operating costs. A mixed integer programming tool was used to simulate generator dispatch in order to assess the impact of various SOCs on generation costs. Interleaved day-ahead scheduling and real-time dispatch models were developed to allow accurate representation of forced outages and wind forecast errors, and were applied to the proposed Irish power system of 2020 with a wind penetration of 32%. Savings of at least 7.8% in generation costs and reductions in wind curtailment of 50% were identified when the most influential SOCs were relaxed. The...
http://hdl.handle.net/10468/1946
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Mark
Data analytics for fault prediction and diagnosis in wind turbines
(2018)
Leahy, Kevin
Data analytics for fault prediction and diagnosis in wind turbines
(2018)
Leahy, Kevin
Abstract:
As feed-in tariffs for wind energy are gradually being replaced by market driven auction-based systems, the need for cost savings at every stage of a wind energy project is more apparent than ever. A proven and effective way of reducing maintenance costs is through a condition-based maintenance (CBM) strategy. By using supervisory control and data acquisition (SCADA) system data instead of retrofitting a dedicated condition monitoring (CM) system, CM functionality can be gained at a fraction of the cost. This thesis investigates using SCADA system data for various levels of CM: fault detection, diagnosis and prediction. First, a case study is presented on using classification techniques for CM using SCADA data. Various methods for dealing with the massive class imbalance seen in fault data are evaluated. It was found that all three levels of CM are possible using classification techniques, though with a high number of false positives. Adding a class-weight to the minority class or u...
http://hdl.handle.net/10468/7375
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Mark
Domestic Application of Micro Wind Turbines in Ireland: Investigation of Their Economic Viability
(2011)
Li, Zhe; Boyle, Fergal; Reynolds, Anthony
Domestic Application of Micro Wind Turbines in Ireland: Investigation of Their Economic Viability
(2011)
Li, Zhe; Boyle, Fergal; Reynolds, Anthony
Abstract:
Electricity generation from renewable sources of energy will be a key part in the development of future strategies for many countries globally. This renewable electricity generation will be hugely important for Ireland, due to its lack of fossil fuel resources. The extremely good wind resource available provides Ireland with the opportunity of generating vast amount of electricity from wind energy. Large-scale wind electricity generation reached 1264 MW installed capacity by January 2010 in Ireland. However, micro scale wind electricity generation has not been very popular in Ireland to-date. The unclear economics of micro wind turbines, under Irish conditions, is considered the biggest obstacle for expanding micro wind turbine installation in Ireland. This paper presents a methodology to accurately evaluate the economic viability of a micro wind turbine on a case-by-case basis. The methodology utilises the software programmes HOMER and Microsoft Excel 2007 for the energy and econom...
https://arrow.dit.ie/engschmecart/29
Marked
Mark
Dynamic effects of anchor positional tolerance on tension moored floating wind turbine
(2016)
Wright, Christopher S.; Pakrashi, Vikram; Murphy, Jimmy
Dynamic effects of anchor positional tolerance on tension moored floating wind turbine
(2016)
Wright, Christopher S.; Pakrashi, Vikram; Murphy, Jimmy
Abstract:
For water depths greater than 60m floating wind turbines will become the most economical option for generating offshore wind energy. Tension mooring stabilised units are one type of platform being considered by the offshore wind energy industry. The complex mooring arrangement used by this type of platform means that the dynamics are greatly effected by offsets in the positioning of the anchors. This paper examines the issue of tendon anchor position tolerances. The dynamic effects of three positional tolerances are analysed in survival state using the time domain FASTLink. The severe impact of worst case anchor positional offsets on platform and turbine survivability is shown. The worst anchor misposition combinations are highlighted and should be strongly avoided. Novel methods to mitigate this issue are presented.
http://hdl.handle.net/10468/3197
Marked
Mark
Dynamic Effects of Anchor Positional Tolerance on Tension Moored Floating Wind Turbine
(2019)
Wright, Christopher; Pakrashi, Vikram; Murphy, Jimmy
Dynamic Effects of Anchor Positional Tolerance on Tension Moored Floating Wind Turbine
(2019)
Wright, Christopher; Pakrashi, Vikram; Murphy, Jimmy
Abstract:
For water depths greater than 60m floating wind turbines will become the most economical option for generating offshore wind energy. Tension mooring stabilised units are one type of platform being considered by the offshore wind energy industry. The complex mooring arrangement used by this type of platform means that the dynamics are greatly effected by offsets in the positioning of the anchors. This paper examines the issue of tendon anchor position tolerances. The dynamic effects of three positional tolerances are analysed in survival state using the time domain FASTLink. The severe impact of worst case anchor positional offsets on platform and turbine survivability is shown. The worst anchor misposition combinations are highlighted and should be strongly avoided. Novel methods to mitigate this issue are presented.
Science Foundation Ireland
Centre MaREI - Centre for Marine and Renewable Energy
http://hdl.handle.net/10197/10442
Marked
Mark
Efficient large-scale energy storage dispatch: challenges in future high renewables systems
(2017)
O'Dwyer, Ciara; Ryan, L. (Lisa B.); Flynn, Damian
Efficient large-scale energy storage dispatch: challenges in future high renewables systems
(2017)
O'Dwyer, Ciara; Ryan, L. (Lisa B.); Flynn, Damian
Abstract:
Future power systems with high penetrations of variable renewables will require increased levels of flexibility from generation and demand-side sources in order to maintain secure and stable operation. One potential flexibility source is largescale energy storage, which can provide a variety of ancillary services across multiple time-scales. In order for appropriate levels of investment to take place, and in order for existing assets to be utilized optimally, it is essential that market signals are present which encourage suitable levels of flexibility, either from storage or alternative sources. Suboptimal storage plant dispatch due to uncertainty and inefficient market incentives are represented as operational constraints on the storage plant, and the impact of these inefficiencies are highlighted. Thus changes required in operational practices for storage plant at different installed wind capacity levels, and the challenges that private storage plant operators will face in genera...
http://hdl.handle.net/10197/9103
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Mark
Energy Hub Management with Intermittent Wind Power
(2019)
Soroudi, Alireza; Mohammadi-Ivatloo, Behnam; Rabiee, Abbas
Energy Hub Management with Intermittent Wind Power
(2019)
Soroudi, Alireza; Mohammadi-Ivatloo, Behnam; Rabiee, Abbas
Abstract:
The optimal energy management in energy hubs has recently attracted a great deal of attention around the world. The energy hub consists of several inputs (energy resources) and outputs (energy consumptions) and also some energy conversion/storage devices. The energy hub can be a home, large consumer, power plant, etc. The objective is to minimize the energy procurement costs (fuel/electricity/environmental aspects) subject to a set of technical constraints. One of the popular options to be served as the input resource is renewable energy like wind or solar power. Using the renewable energy has various benefits such as low marginal costs and zero environmental pollution. On the other hand, the uncertainties associated with them make the operation of the energy hub a difficult and risky task. Besides, there are other resources of uncertainties such as the hourly electricity prices and demand values. Hence, it is important to determine an economic schedule for energy hubs, with an acce...
http://hdl.handle.net/10197/11239
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Mark
Estimating the Electricity Prices, Generation Costs and CO2 Emissions of Large Scale Wind Energy Exports from Ireland to Great Britain
(2016)
Cleary, Brendan; Duffy, Aidan; Bach, Bjarne; Vitina, Aisma; O'Connor, Alan; Conlon...
Estimating the Electricity Prices, Generation Costs and CO2 Emissions of Large Scale Wind Energy Exports from Ireland to Great Britain
(2016)
Cleary, Brendan; Duffy, Aidan; Bach, Bjarne; Vitina, Aisma; O'Connor, Alan; Conlon, Michael
Abstract:
The share of wind generation in the Irish and British electricity markets is set to increase by 2020 due to renewable energy (RE) targets. The United Kingdom (UK) and Ireland have set ambitious targets which require 30% and 40% of electricity demand to come from RE, mainly wind, by 2020, respectively. Ireland has sufficient indigenous onshore wind energy resources to exceed the RE target, while the UK faces uncertainty in achieving its target. A possible solution for the UK is to import RE directly from large scale onshore and offshore wind energy projects in Ireland; this possibility has recently been explored by both governments but is currently on hold. Thus, the aim of this paper is to estimate the effects of large scale wind energy in the Irish and British electricity markets in terms of wholesale system marginal prices, total generation costs and CO2 emissions. The results indicate when the large scale Irish-based wind energy projects are connected directly to the UK there is ...
https://arrow.dit.ie/dubenart/59
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Exploring the offshore wind energy potential of Turkey based on multi-criteria site selection
(2018)
Argin, Mehmet; Yerci, Volkan; Erdogan, Nuh; Kucuksari, Sadik; Cali, Umit
Exploring the offshore wind energy potential of Turkey based on multi-criteria site selection
(2018)
Argin, Mehmet; Yerci, Volkan; Erdogan, Nuh; Kucuksari, Sadik; Cali, Umit
Abstract:
Wind energy is the leading form of non-hydro renewable energy source in terms of installed capacity in Turkey. It is among the most promising option for Turkey to decrease the energy dependence of external primary energy resources such as national gas and oil that diversifies the domestic share of energy sources in the national energy mix. However, offshore wind energy deployment has not gained satisfactory attention even though the country is surrounded by seas on three of its sides. Exploring Turkey's offshore wind power potential becomes an important task to serve this energy policy. This study presents a methodological framework for finding the most suitable offshore wind farm locations, meeting various multi-layer site selection criteria. The offshore wind energy resource is first assessed using the wind energy potential for 55 coastal regions where the nearshore meteorological stations are available in Turkey. Following on this analysis, a multi-criteria site selection wo...
http://hdl.handle.net/10468/7727
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Mark
Factors Influencing Wind Energy Curtailment
(2013)
Burke, Daniel J.; O'Malley, Mark
Factors Influencing Wind Energy Curtailment
(2013)
Burke, Daniel J.; O'Malley, Mark
Abstract:
Nonphysically firm wind generation connections (i.e., those to which curtailment can apply) may be necessary for significant wind integration to congested transmission networks. A study of factors influencing this associated wind energy curtailment is, therefore, of timely importance. In this paper, the wind curtailment estimation effects of natural inter-yearly wind profile variability, system demand-profile/fuel-price parameter uncertainty, and minimum system inertial constraints are studied in detail. Results indicate that curtailment estimation error can be reduced by appropriate wind data year-length and sampling-rate choice, though a pragmatic consideration of system parameter uncertainty should be maintained. Congestion-related wind energy curtailment risk due to such parameter uncertainty exhibits appreciable interlocational dependency, suggesting there may be scope for effective curtailment risk management. The coincidence of wind energy curtailment estimated due to network...
http://hdl.handle.net/10197/4727
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