Dissertations / Theses on the topic 'Electric power-plants – Dust control'
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Yuen, Albert Wai Ling Materials Science & Engineering Faculty of Science UNSW. "Collector current density and dust collection in wire-plate electrostatic precipitators." Awarded by:University of New South Wales. Materials Science and Engineering, 2006. http://handle.unsw.edu.au/1959.4/28274.
Full textKhaliq, Abdul. "Preventive control for the attainment of a dynamically secure power system." Diss., Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/13893.
Full textABDULLA, ABDULLA I. M. "SOME NEW TECHNIQUES FOR THE LOAD FREQUENCY CONTROL OF MULTI-AREA POWER SYSTEMS." Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/183902.
Full textBø, Torstein Ingebrigtsen. "Dynamic Model Predictive Control for Load Sharing in Electric Power Plants for Ships." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18749.
Full textDu, Zhaobin. "Area COI-based slow frequency dynamics modeling, analysis and emergency control for interconnected power systems." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B4175783X.
Full textYilmaz, Oguz. "Participation Of Combined Cycle Power Plants To Power System Frequency Control: Modeling And Application." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607228/index.pdf.
Full texts grid and studies related to its improvement had been a great concern, so is the reason that main subject of my thesis became as &ldquo
Power System Frequency Control&rdquo
. Apart from system-wide global control action (secondary control)
load control loops at power plants, reserve power and its provision even at the minimum capacity generation stage, (primary control) are the fundamental concerns of this subject. The adjustment of proper amount of reserve at the power plants, and correct system response to any kind of disturbance, in the overall, are measured by the quality of the frequency behaviour of the system. A simulator that will simulate a dynamic gas turbine and its control system model, together with a combined cycle power plant load controller is the outcome of this thesis.
Thapa, Ravi Chandra. "Damping Interarea Oscillations in Power Systems with DFIG." Thesis, North Dakota State University, 2011. https://hdl.handle.net/10365/29173.
Full textNorth Dakota State University. Graduate School
North Dakota State University. Department of Electrical and Computer Engineering
Fleshman, Muller Eunamia. "Development of a supplier quality assessment system in Eskom." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/97323.
Full textENGLISH ABSTRACT: Eskom, the South Africa and trans-Africa electrical power utility, has a capacity expansion project that is estimated to cost roughly R340 billion. The programme is anticipated to continue through 2018. Eskom will be contracting with a multitude of suppliers and it is imperative that the projects delivered under the capacity expansion programme meet Eskom’s required quality standards. The question then arises whether the set quality standards are sufficiently comprehensive to provide confidence that suppliers will achieve high quality standards. This aim of this research was to examine supplier assessment programmes to determine the criteria that will best provide supplier assurance. The researcher consulted a vast range of literature available on supplier quality assessment programmes. From the literature consulted, there appeared to be some recurring themes from the range of assessment tools. It also becomes apparent that the assessment tool cannot only focus on a quality system, but a balance of strategic and operational focus was needed to fully understand suppliers’ ability to deliver. One of the key considerations was establishing longer-term collaborative relationships with key suppliers. Long-term relations encourage trust, transparency and innovation. It was equally important to ensure that operational assessments provided insight on suppliers’ capability. Based on the literature reviewed, a proposed framework was tested against the current methodology for supplier evaluation. From these comparisons, some gaps were identified and recommendations were suggested to improve the supplier evaluation programme.
Du, Zhaobin, and 杜兆斌. "Area COI-based slow frequency dynamics modeling, analysis and emergency control for interconnected power systems." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B4175783X.
Full textTomilson, Andrew G. "Frequency and voltage control of a high-penetration, no-storage wind-diesel system." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0023/MQ36186.pdf.
Full textGencoglu, Cihangir. "Assessment Of The Effect Of Hydroelectric Power Plants'." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612165/index.pdf.
Full textVijapur, Santosh H. "Design optimization and experimental study of a wet laminar electrostatic precipitator for enchancing collection efficiency of aerosols." Ohio : Ohio University, 2008. http://www.ohiolink.edu/etd/view.cgi?ohiou1227020758.
Full textRaab, Andreas Franz Alois [Verfasser], Kai [Akademischer Betreuer] Strunz, Antonello [Gutachter] Monti, and Olav B. [Gutachter] Fosso. "Operational planning, modeling and control of virtual power plants with electric vehicles / Andreas Franz Alois Raab ; Gutachter: Antonello Monti, Olav B. Fosso ; Betreuer: Kai Strunz." Berlin : Technische Universität Berlin, 2018. http://d-nb.info/115618522X/34.
Full textSheblé, Gerald B. "Unit commitment for operations." Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/49977.
Full textPh. D.
incomplete_metadata
Van, Reenen Olaf Pieter. "Eskom nuclear generation : risk mitigation through quality management development of small suppliers." Thesis, Cape Peninsula University of Technology, 2009. http://hdl.handle.net/20.500.11838/1223.
Full textThere is a South African Government initiative to use State-owned Enterprises (SOE’s) to roll out a programme for the development and stimulation of local small businesses in South Africa. The state has requested SOE’s to set targets on a voluntary basis to increase trade with small businesses, with the purpose of developing small enterprises to eventually enhance skills transfer, training and employment. However, when large customers such as Eskom Nuclear Generation require ISO certification as a prerequisite for a supplier to provide goods and/or services to them, most small businesses are unable to comply. The requirement of ISO9000 compliance inhibits the ability of most small businesses to compete with their larger counterparts. Small businesses constitute as much as 90% of most world economies. They have many advantages to offer customers, such as a high level of flexibility, innovation and responsiveness to customer needs. These attributes can introduce healthy competition to the supply chain. Small businesses, by their very nature experience more risks, such as a higher vulnerability to volatile market forces and skills loss. In addition, they are generally less specialised. They are under continuous competitive pressure, and are generally not able to provide assurance of a sustainable product over a longer period. Although there is an imperative to develop and use small suppliers, they introduce higher risk to the supply chain. The primary research objective of this dissertation is to develop a robust model to identify risks inherent to small businesses, and to propose measures to mitigate such risks. A classification of problems with small suppliers that have occurred at Koeberg Nuclear Power Station over a period of 3 years (from June 2005 to May 2008), will form the basis of the research methodology. The anticipated findings of the research include the following. _ Several common critical issues of failure will be identified in the internal processes of small suppliers, with variations between types of suppliers, which will indicate which elements within the context of ISO9000 can be applied to address shortcoming in the suppliers’ processes. _ A matrix will be compiled from this by which the customer can identify the type of supplier, the types of risks inherent to that supplier, and which elements of ISO9000 the customer should insist upon to be adopted into an elementary quality management system of that small supplier. This should be executed as part of a larger supplier development programme.
Reddy, Shailendra N. "A mathematical simulation of ETS' limestone emission control (LEC) process using a moving bed configuration." Ohio : Ohio University, 1991. http://www.ohiolink.edu/etd/view.cgi?ohiou1183736591.
Full textAlmeida, José Leandro Casa Nova. "Análise da viabilidade técnica e econômica de implantação de uma microusina hidrelétrica /." Guaratinguetá : [s.n.], 2007. http://hdl.handle.net/11449/99288.
Full textAbstract: This proposal of this work is to demonstrate the performance of a Micro- Hydroelectrical Powerplant (MHP), which has been installed at the UNESP FEG - Renewable Energy Center, in Guaratinguetá-SP. The present analysis refers to the electrical and mechanical performances. The micro-hydroelectrical powerplant employs a Pelton turbine with a diameter of 0,4m at the incidence of water flow. The generator is provided with permanent ferrite magnet rotor. Costs were low for both the acquisition of parts and installation of the generator and the micro-hydroelectrical powerplant. Bench tests carried out with the generator reached the maximum possible ideal functioning conditions. Some physical modifications were necessary to maintain constant rotation with load variations. Resistive and non-linear loads were used in the essays. The results contributed for an improvement in the quality of energy and the control of water flow in the process of generating energy. The assembly composed of the generator and the Pelton turbine presented an electro-mechanical revenue between 20% to 30%.
Orientador: Teófilo Miguel de Souza.
Coorientador: Pedro Magalhães Sobrinho.
Banca: Samuel Euzedice de Lucena.
Banca: Osiris Cancigliere Junior.
Mestre
Almeida, José Leandro Casa Nova [UNESP]. "Análise da viabilidade técnica e econômica de implantação de uma microusina hidrelétrica." Universidade Estadual Paulista (UNESP), 2007. http://hdl.handle.net/11449/99288.
Full textCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
A proposta desta dissertação foi a de apresentar o desempenho de uma microcentral hidrelétrica, instalada no Centro de Energias Renováveis da Unesp, Campus Guaratinguetá. As análises apresentadas são de desempenho elétrico e mecânico. A microcentral hidrelétrica utiliza roda Pelton com 0,4m de diâmetro no ponto de incidência do jato de água. O gerador utilizado foi com rotor de ímãs permanentes de ferrite. Tanto o gerador quanto a microusina são de baixo custo de aquisição e instalação. Foram feitos os testes em bancada com o gerador aproximando o máximo possível das condições ideais de funcionamento. Também foram realizadas algumas alterações físicas na microhidrelétrica para manter a rotação constante com a variação de carga. Utilizaram-se cargas resistivas e não-lineares. Os resultados contribuíram para a melhoria da qualidade da energia e o controle do fluxo de água no processo de geração de energia. O conjunto composto de gerador e a turbina Pelton, durante o experimento, apresentaram rendimentos eletromecânicos da ordem de 20% a 30% comparados com a teoria.
This proposal of this work is to demonstrate the performance of a Micro- Hydroelectrical Powerplant (MHP), which has been installed at the UNESP FEG - Renewable Energy Center, in Guaratinguetá-SP. The present analysis refers to the electrical and mechanical performances. The micro-hydroelectrical powerplant employs a Pelton turbine with a diameter of 0,4m at the incidence of water flow. The generator is provided with permanent ferrite magnet rotor. Costs were low for both the acquisition of parts and installation of the generator and the micro-hydroelectrical powerplant. Bench tests carried out with the generator reached the maximum possible ideal functioning conditions. Some physical modifications were necessary to maintain constant rotation with load variations. Resistive and non-linear loads were used in the essays. The results contributed for an improvement in the quality of energy and the control of water flow in the process of generating energy. The assembly composed of the generator and the Pelton turbine presented an electro-mechanical revenue between 20% to 30%.
Do, Khoa Dang. "Reconfigurable control in electric utility power plants." 2012. http://hdl.handle.net/2152/19469.
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Simonis, Victor A. "A probabilistic and economic analysis of a major component shared among electric utilities." 1985. http://hdl.handle.net/2097/27543.
Full textSwisher, Joel Nelson. "Prospects for International trade in environmental services an analysis of international carbon emission offsets /." 1991. http://catalog.hathitrust.org/api/volumes/oclc/26246172.html.
Full textJanse, van Rensburg Jacobus Johannes. "Advanced modelling of porous screens in aerodynamic diffusers using variable resistance factors." Thesis, 2014. http://hdl.handle.net/10352/247.
Full textStrict emission legislation has forced industry in general to seriously consider the negative impact it has on the environment, specifically concerning emissions from burning fossil fuel into the atmosphere. In cases where emission levels exceed the allowable limit, companies are forced to operate at lower operating conditions and these load losses can result in a significant loss of revenue. This has forced companies to improve their ash filtering capabilities by optimising electrostatic precipitation systems. One of the main factors impacting on the efficiency of such a system is the distribution of the flow across the collection plates. The design of the inlet diffuser plays a major role in the ultimate distribution of the flow through the precipitator. Porous screens are positioned in the diffuser in order to distribute the flow across the total flow area with the aim to achieve a uniform distribution of the flow. CFD is widely used in industry to simulate the flow through precipitators in order to optimise the flow distribution and thus increase the efficiency of the system. It was found however that the current methods used to simulate these screens in CFD models were not well researched and employed fixed resistance values that could not reliably compensate for changes in the resistance coefficient due to a change in the angle of incidence. This study investigates advanced numerical methods for the simulation of porous screens in applications where the angle of incidence changes continuously across the face of the screen. New methods are introduced where the resistance of the screen is calculated as a function of the changing angle of incidence. The methods currently used are also investigated and compared with results from the new methods. Extensive experimental work was required to supply empirical data for the validation of the numerical methods that are proposed. For this reason, the first part of this study focused on the design construction and commissioning of a low speed wind tunnel. Results are presented and discussed for flow profiles through wide-angle diffusers at different angles and also for a number of different screens positioned in the centre of the diffuser. This study also investigates the sensitivity of a CFD simulation code to factors such as numerical discretisation schemes, turbulence models and solution relaxation specifically for wide-angle diffusers. These factors were tested for diffusers at different angles and included tests on open diffusers and also with screens positioned inside the diffuser. It was concluded that the current methods used are not adequate to capture the true flow profiles for a range of different screen geometries. Although the proposed models did improve on the limitations of the current methods, it was found that the applicability of these models is still limited and that further research would be required to develop numerical methods that are valid for a wide range of applications.
Vaal University of Technology, The National Research Foundation (NRF) and Eskom TSI