Dissertations / Theses on the topic 'Water distribution systems; multiobjective optimization'
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Rogers, Scott W. "Multiobjective optimization of contaminant sensor locations in drinking water distribution systems using nodal importance concepts." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/29607.
Full textCommittee Chair: Aral, Mustafa; Committee Member: Guan, Jiabao; Committee Member: Jang, Wonyong; Committee Member: Kim, Seong-Hee; Committee Member: Uzer, Turgay. Part of the SMARTech Electronic Thesis and Dissertation Collection.
Formiga, Klebber Teodomiro Martins. "Otimização multiobjetivo de projetos de redes de distribuição de água." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/18/18138/tde-29012016-125410/.
Full textThe topic \"Optimized design of water distribution systems\" has generated hundreds of scientific publications in the last four decades. Several researchers have searched for a technology which would take into account a variety of aspects and uncertainties innate to the design of such networks. However, the results of most methodologies developed are not practical. The objective of this work is to develop a methodology for water distribution systems design that has a multi-objective focus. The methodology developed focuses in three aspects of the design of such systems: cost, reliability and losses by leaking. A multiobjective optimization method based on generic algorithms, generating a set of non-defined solutions, and a multi-criteria method for choosing the final alternative, was employed. Nine functions representing the objectives of the problem (method) were tested: cost, leakages, entropy, resilience, failure tolerance, expansibility, aging effect and resilienthropy, seven of which are specific to representing reliability. In order to evaluate the generated alternatives, a hydraulic analysis model, that could handle leakages and pressure dependent demands, was developed. The chosen methods were Nielsen\'s Hybrid, and the Gradient. Of all tested functions, resilientropy, originally proposed in this work, proved to be the one best adjusted to the formal concept of reliability, represented by the tolerance function. The results obtained by this methodology are promising, as they produced efficient distribution networks at the end of the simulations performed.
Greene, James J. "Global optimization of water distribution systems." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-10062009-020212/.
Full textHilber, Patrik. "Maintenance optimization for power distribution systems." Doctoral thesis, Stockholm : Electrical Engineering, Elektrotekniska system, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4686.
Full textAndrade-Rodriguez, Manuel Alejandro. "Computationally Intensive Design of Water Distribution Systems." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/301704.
Full textTsegaye, Seneshaw Amare. "Flexible Urban Water Distribution Systems." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4597.
Full textMorley, Mark S. "A framework for evolutionary optimization applications in water distribution systems." Thesis, University of Exeter, 2008. http://hdl.handle.net/10036/42400.
Full textVan, Zyl Jakobus Ernst. "A methodology for improved operational optimization of water distribution systems." Thesis, University of Exeter, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366606.
Full textGuc, Gercek. "Optimization Of Water Distribution Networks Using Genetic Algorithm." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607192/index.pdf.
Full textit should be noted that the solution provided by RealPipe is hydraulically improved.
Rogalski, Richard Byron. "Mathematical and artificial neural network models for simulation and optimization of chlorine residuals in water distribution systems." access full-text online access from Digital Dissertation Consortium, 2002. http://libweb.cityu.edu.hk/cgi-bin/er/db/ddcdiss.pl?NQ77034.
Full textAkdogan, Tevfik. "Design Of Water Distribution System By Optimization Using Reliability Considerations." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606082/index.pdf.
Full textthis works employs the algorithm proposed by Goulter and Coals (1986). At the end, a skeletonized network design is offered
various costs are estimated in regard to the degree of reliability.
Mahmoud, Herman Abdulqadir Mahmoud. "Real-time operational response methodology for reducing failure impacts in water distribution systems." Thesis, University of Exeter, 2018. http://hdl.handle.net/10871/33492.
Full textTelci, Ilker Tonguc. "Optimal water quality management in surface water systems and energy recovery in water distribution networks." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45861.
Full textSiew, Calvin Yew Ming. "A penalty-free multi-objective evolutionary optimization approach for the design and rehabilitation of water distribution systems." Thesis, University of Strathclyde, 2011. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=25978.
Full textNikolaou, Christos. "A multi-objective genetic algorithm optimisation using variable speed pumps in water distribution systems." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/6819/.
Full textChastain, James R. Jr. "A Heuristic Methodology for Locating Monitoring Stations to Detect Contamination Events in Potable Water Distribution Systems." Scholar Commons, 2004. https://scholarcommons.usf.edu/etd/988.
Full textBranco, Hermes Manoel Galvão Castelo. "Modelagem multiobjetivo para o problema da alocação de monitores de qualidade da energia em sistemas de distribuição de energia elétrica." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/18/18154/tde-04092013-105844/.
Full textProblems arising from disturbances in power quality (PQ) can cause serious damage, both social, and financial, to customers connected to the electrical power distribution systems as a whole. In this context, the customers who suer most are industrial customers, as they have loads sensitive to various disturbances associated with the lack of PQ. Thus, in order to adopt preventive or corrective measures to improve PQ rates, it is necessary to monitor electrical systems to allow better oversight of the occurrence of disturbances. In this research, the proposal is to model the problem of optimal allocation of power quality monitors in distribution systems with multiple objectives. The multiple objectives are: minimizing the monitoring cost, minimizing ambiguities in topology, maximizing the load monitoring, maximizing the area monitoring, minimizing the voltage sag unmonitored, and maximizing the redundancy in the sag monitoring. In solving the problem, a Multiobjective Evolutionary Algorithm with Tables (MEAT) was adopted due to ability to deal with many objectives. The results show that the AMET finds a set of ecient solutions that are diversified and well-distributed along the Pareto Front, and that they are highly relevant for planning of PQ monitoring systems in electrical power distribution systems. The main contribution of this thesis is to provide a model that allows utilities better evaluate investments that they will make in their monitoring systems comprising six dierent criteria, allowing greater flexibility in establishing the monitoring plan and a better analysis of cost/benefit considering the six aspects.
Garcia, Vinicius Jacques. "Metaheuristicas multiobjetivo para o problema de restauração do serviço em redes de distribuição de energia eletrica." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/260561.
Full textTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação
Made available in DSpace on 2018-08-05T20:11:19Z (GMT). No. of bitstreams: 1 Garcia_ViniciusJacques_D.pdf: 1756755 bytes, checksum: e845cc09a5de807da958e9792684e777 (MD5) Previous issue date: 2005
Resumo: Depois da regulamentação do setor elétrico brasileiro, a qualidade no fornecimento de energia ganhou maior importância por parte das concessionárias. Neste contexto, o problema de restauração do serviço tem particular relevância pela relação com a freqüência e duração das interrupções no fornecimento: através de alterações na configuração original da rede, busca-se reduzir a carga não atendida sem deixar de observar as restrições de capacidade dos alimentadores, de queda de tensão nas barras de carga e de radialidade da rede. Considerando o caráter temporário destas manobras, torna-se desejável reduzir o grau de intervenção de modo a facilitar a restauração da configuração original. Nesta tese é considerado o problema multiobjetivo de restauração do serviço que compreende a minimização da carga sem fornecimento e do número de chaves manipuladas. Depois da definição matemática do problema, da revisão da literatura especializada e da descrição de um "framework" para problemas relacionados, são descritas duas heurísticas, uma construtiva e outra de melhoramento. A seguir, apresentam-se duas metaheurísticas para o problema, uma Busca Tabu e um Algoritmo Evolutivo, ambas baseadas em otimização de Pareto. Por fim, por meio de estudos práticos com sistemas de distribuição brasileiros, avalia-se experimentalmente a aplicabilidade das abordagens propostas
Abstract: After the Brazilian electric power market regulation, quality of service became a crucial concern of utilities. In fact, the service restoration has a particular importance since it is closely related to frequency and duration of service interruption: through network reconfigurations, one aims to reduce the non supplied load while respecting constraints like feeder and voltage limits as well as the maintenance of a radial structure. Considering that this emergency state is transitory existing only until the fault is eliminated, it is convenient to reduce the number of switching operations in order to make the return back to the original configuration easy. This work considers the multiobjective service restoration to minimize both the load not supplied and the number of switching operations. After defining the mathematical formulation proposed and presenting the bibliographical survey with the description of a new framework to related problems, two new heuristics are presented, one for constructive search and another one for neighborhood search. Next, two metaheuristics especially developed for the referred problem are described, both based on Pareto optimization. Finally, the effectiveness of these proposed methods are proved in a set of five systems, three of them referring to actual Brazilian systems
Doutorado
Automação
Doutor em Engenharia Elétrica
Cheung, Peter Batista. "Análise de reabilitação de redes de distribuição de água para abastecimento via algoritmos genéticos multiobjetivo." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/18/18138/tde-30092008-185242/.
Full textRecognizing the importance of water as a limited natural resource and considering the prospect of continued population growth, it is important to investigate water distribution systems which are common to all urban infrastructures. Planning of the water distribution network rehabilitation becomes additionally important given economic constraints and operational behavior these systems which modifies in time due to deterioration of water networks. The present work is an effort to consider the multiple objectives in the water network rehabilitation analyses. Four objectives were considered: cost minimization, benefit maximization, leakage minimization and reliability maximization. In addition, it presents some contributions to multiobjective optimization methodology by genetic algorithms, offering an improvement of Multiobjective Genetic Algorithm (MOGA). A detailed investigation is conducted on genetic operators (recombination and mutation) comparing some existing multiobjective optimization methods (Multiobjective Genetic Algorithm - MOGA, Non-dominated Sorting Genetic Algorithm - NSGA, Strength Pareto Evolutionary Algorithm - SPEA and Elitist Non-Dominated Sorting Genetic Algorithm - NSGA II). As regards the hydraulic analysis, this work introduces both leakages and pressure dependent demands in the simulations, providing a more realistic representation of actual field situations. The present study employs hypothetical networks and a real network obtaining satisfactory solutions. Further, dynamic programming concept is also incorporated into the multiobjective optimization framework.
Khan, Kashif. "A distributed computing architecture to enable advances in field operations and management of distributed infrastructure." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/a-distributed-computing-architecture-to-enable-advances-in-field-operations-and-management-of-distributed-infrastructure(a9181e99-adf3-47cb-93e1-89d267219e50).html.
Full textWu, Wenyan. "Multiobjective genetic algorithm optimization of water distribution systems accounting for economic cost, greenhouse gas emissions and reliability." Thesis, 2012. http://hdl.handle.net/2440/90795.
Full textThesis (Ph.D.) -- University of Adelaide, School of Civil, Environmental & Mining Engineering, 2012
Broad, Darren Ross. "Water distribution system optimization using metamodels." Thesis, 2014. http://hdl.handle.net/2440/98139.
Full textThesis (Ph.D.) (Research by Publication) -- University of Adelaide, School of Civil, Environmental and Mining Engineering, 2014.
Reddy, Manne Janga. "Swarm Intelligence And Evolutionary Computation For Single And Multiobjective Optimization In Water Resource Systems." Thesis, 2006. http://hdl.handle.net/2005/370.
Full textHERSTEIN, LESLEY. "Incorporating Environmental Impacts into Multi-Objective Optimization of Water Distribution Systems." Thesis, 2009. http://hdl.handle.net/1974/5090.
Full textThesis (Master, Civil Engineering) -- Queen's University, 2009-08-25 16:08:33.636
Karmakar, Subhankar. "Grey Optimization For Uncertainty Modeling In Water Resources Systems." Thesis, 2006. http://hdl.handle.net/2005/555.
Full text"Investigation of Sustainable and Reliable Design Alternatives for Water Distribution Systems." Doctoral diss., 2012. http://hdl.handle.net/2286/R.I.14590.
Full textDissertation/Thesis
Ph.D. Construction 2012
Johnston, John. "Minimizing Energy Consumption in a Water Distribution System: A Systems Modeling Approach." Thesis, 2011. http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9287.
Full textBi, Weiwei. "Improved evolutionary algorithm optimisation of water distribution systems using domain knowledge." Thesis, 2016. http://hdl.handle.net/2440/112041.
Full textThesis (Ph.D.) (Research by Publication) -- University of Adelaide, School of Civil, Environmental and Mining Engineering, 2016.
Rasekh, Amin. "Risk Analysis and Adaptive Response Planning for Water Distribution Systems Contamination Emergency Management." Thesis, 2012. http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11533.
Full textJung, Bong Seog. "Optimization and calibration of water distribution systems : exploring evolutionary approaches while accounting for fluid transients." 2005. http://link.library.utoronto.ca/eir/EIRdetail.cfm?Resources__ID=370909&T=F.
Full textMacLeod, Stephanie Patricia. "Evaluating the Impact of Climate Change Mitigation Strategies on Water Distribution System Design and Optimization." Thesis, 2010. http://hdl.handle.net/1974/5996.
Full textThesis (Master, Civil Engineering) -- Queen's University, 2010-08-26 15:01:27.174
"Water Supply Infrastructure Modeling and Control under Extreme Drought and/or Limited Power Availability." Doctoral diss., 2019. http://hdl.handle.net/2286/R.I.53499.
Full textDissertation/Thesis
Doctoral Dissertation Civil, Environmental and Sustainable Engineering 2019