Дисертації з теми "Water distribution system design optimization"
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Andrade-Rodriguez, Manuel Alejandro. "Computationally Intensive Design of Water Distribution Systems." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/301704.
Повний текст джерелаAkdogan, 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.
Повний текст джерелаthis 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.
Xie, Xiongfei. "Operation Optimization and Water Quality Simulation of Potable Water Distribution System." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5406.
Повний текст джерелаGuc, Gercek. "Optimization Of Water Distribution Networks Using Genetic Algorithm." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607192/index.pdf.
Повний текст джерелаit should be noted that the solution provided by RealPipe is hydraulically improved.
Totlani, Rajiv. "Enhanced lower bounds and an algorithm for a water distribution network design model." Thesis, This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-08292008-063331/.
Повний текст джерелаSiew, 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.
Повний текст джерелаZanoli, Sara. "A modularity based approach and high-level flow model in the optimal design of water distribution networks using a Genetic Heritage Evolution (GHEST) algorithm." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.
Знайти повний текст джерелаBarr?to, J?nior Manoel. "Otimiza??o de um sistema de distribui??o predial de ?gua fria: estudo de caso." Universidade Federal do Rio Grande do Norte, 2006. http://repositorio.ufrn.br:8080/jspui/handle/123456789/16019.
Повний текст джерелаThis dissertation presents a methodology to the optimization of a predial system of cold water distribution. It s about a study of a case applied to the Tropical Buzios Residential Condominium, located in the B?zio s Beach, N?sia Floresta city, the east coast of the Rio Grande do Norte state, twenty kilometers far from Natal. The design of cold water distribution networks according to Norm NBR 5626 of the ABNT - Brazilian Association of Techniques Norms, does not guarantee that the joined solution is the optimal solution of less cost. It s necessary the use of an optimization methodology, that supplies us, between all the possible solutions, the minimum cost solution. In the optimization process of the predial system of water distribution of the Tropical B?zios Condominium, is used Method Granados, that is an iterative algorithm of optimization, based on the Dynamic Programming, that supplies the minimum cost s network, in function of the piezometric quota of the reservoir. For the application of this Method in ramifies networks, is used a program of computer in C language. This process is divided in two stages: attainment of the previous solution and reduction of the piezometric quota of headboard. In the attainment of the previous solution, the minors possible diameters are used that guarantee the limit of maximum speed and the requirements of minimum pressures. The piezometric quota of headboard is raised to guarantee these requirements. In the second stage of the Granados Method, an iterative process is used and it objective is to reduce the quota of headboard gradually, considering the substitution of stretches of the network pipes for the subsequent diameters, considering a minimum addition of the network cost. The diameter change is made in the optimal stretch that presents the lesser Exchange Gradient. The process is locked up when the headboard quota of desired is reached. The optimized network s material costs are calculated, and is made the analysis of the same ones, through the comparison with the conventional network s costs
Esta Disserta??o apresenta uma metodologia para a otimiza??o de um sistema de distribui??o predial de ?gua fria. Trata-se de um estudo de caso aplicado ao Condom?nio Residencial B?zios Tropical, localizado na Praia de B?zios, munic?pio de N?sia Floresta, litoral leste do Estado do Rio Grande do Norte, distante vinte quil?metros de Natal. O dimensionamento de redes de distribui??o predial de ?gua fria segundo os crit?rios da Norma NBR 5626 da ABNT - Associa??o Brasileira de Normas T?cnicas, n?o garante que a solu??o encontrada seja a solu??o ?tima de menor custo. ? necess?ria a utiliza??o de uma metodologia para otimiza??o, que nos forne?a, entre todas as solu??es poss?veis, a solu??o de custo m?nimo. No processo de otimiza??o do sistema de distribui??o predial do Condom?nio B?zios Tropical, ? utilizado o M?todo Granados, que ? um algoritmo iterativo de otimiza??o, baseado na Programa??o Din?mica, que fornece a rede de custo m?nimo, em fun??o da cota piezom?trica do reservat?rio. Para a aplica??o desse M?todo a redes ramificadas, ? utilizado um programa de computador em linguagem C. Esse processo ? dividido em duas etapas: obten??o da solu??o pr?via e redu??o da cota piezom?trica de cabeceira. Na obten??o da solu??o pr?via s?o utilizados os menores di?metros poss?veis que garantam o limite de velocidade m?xima e os requisitos de press?es m?nimas. A cota piezom?trica de cabeceira ? elevada ficticiamente para garantir esses requisitos. Na segunda etapa do M?todo Granados ? utilizado um processo iterativo, cujo objetivo ? reduzir gradualmente a cota de cabeceira, considerando a substitui??o de trechos da tubula??o da rede pelos di?metros subseq?entes, considerando um acr?scimo m?nimo de custo para a rede. A mudan?a de di?metro ? feita no trecho ?timo que apresenta o menor Gradiente de C?mbio. O processo se encerra quando ? atingida a cota de cabeceira desejada. S?o calculados os custos com materiais da rede otimizada e feita a an?lise dos mesmos, atrav?s da compara??o com os custos da rede convencional
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/.
Повний текст джерелаThe 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.
DEKHANE, NIKHIL GOVIND. "DISTRIBUTION SYSTEM DESIGN USING OPTIMIZATION APPROACH." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1092334088.
Повний текст джерелаSetiadi, Yohan. "Entropy-based design optimization of water distribution networks." Thesis, University of Liverpool, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.433064.
Повний текст джерелаAkkas, Izzet Saygin. "Reliability Based Water Distribution Network Design." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607830/index.pdf.
Повний текст джерелаs adaptation based on the methodology proposed by Bao and Mays (1990) by the aid of a hydraulic network solver program HapMam prepared by Nohutç
u (2002). For purposes of illustration, the skeletonized form of Ankara Water Distribution Network subpressure zone (N8-1) is taken as the case study area. The methodology in this study, covering the relation between the reliability and the cost of a water distribution network and the proposed reliability level can be used in the design of new systems.
Basupi, Innocent. "Adaptive water distribution system design under future uncertainty." Thesis, University of Exeter, 2013. http://hdl.handle.net/10871/14722.
Повний текст джерелаKeles, Gultekin. "Water Distribution Network Design By Partial Enumeration." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606816/index.pdf.
Повний текст джерелаpartial enumeration method can assist designers to select the optimum system combination.
Kapelan, Zoran. "Calibration of water distribution system hydraulic models." Thesis, University of Exeter, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370011.
Повний текст джерелаChung, Gunhui. "Water Supply System Management Design and Optimization under Uncertainty." Diss., The University of Arizona, 2007. http://hdl.handle.net/10150/195506.
Повний текст джерелаGraybeal, Dale Kevin. "Evaluation of water distribution system monitoring using a combined simulation-optimization approach." Thesis, This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-01312009-063527/.
Повний текст джерелаWen, Naijun. "Optimization of ship-pack in a two-echelon distribution system." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/61903.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (p. 61-62).
The traditional Economic Order Quantity (EOQ) model ignores the physical limitations of distribution practices. Very often distribution centers (DC) have to deliver merchandise in manufacturer-specified packages, which can impose restrictions on the application of the economic order quantity. These manufacturer-specified packages, or ship-packs, include cases (e.g., cartons containing 24 or 48 units), inners (packages of 6 or 8 units) and eaches (individual units). For each Stock Keeping Unit (SKU), a retailer decides which of these ship-pack options to use when replenishing its retail stores. Working with a major US retailer, we have developed a cost model to help determine the optimum warehouse ship-pack. Besides recommending the most economical ship-pack, the model is also capable of identifying candidates for warehouse dual-slotting, i.e., two picking modules for the same SKU that carry two different pack sizes. We find that SKUs whose sales volumes vary greatly over time will benefit more from dual-slotting. Finally, we extend our model to investigate the ideal case configuration for a particular SKU, that is, the ideal size for an inner package.
by Naijun Wen.
S.M.
Bullene, Rachel. "A Case Study of Network Design for Middle East Water Distribution." VCU Scholars Compass, 2010. http://scholarscompass.vcu.edu/etd/2260.
Повний текст джерелаBedoya, Ceballos Juan Carlos. "Optimization Methods for Distribution Systems: Market Design and Resiliency Enhancement." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/99489.
Повний текст джерелаDoctor of Philosophy
Distribution systems (DS) are evolving from traditional centralized and fossil fuel generation resources to networks with large scale deployment of responsive loads and distributed energy resources. Optimization-based decision-making methods to improve resiliency and coordinate DS participants are required. Prohibitive costs due to extended power outages require efficient mechanisms to avoid interruption of service to critical load during catastrophic power outages. Coordination mechanisms for various generation resources and proactive loads are in great need. Existing optimization-based approaches either neglect the asynchronous nature of the information arrival or are computationally intractable for large scale system. The work of this dissertation results in major contributions regarding new optimization methods for market design, coordination of DS participants, and improvement of DS resiliency. Four contributions toward the application of optimization approaches for DS are made: 1) A distributed optimization algorithm based on decomposition and best approximation techniques to maximize social welfare in a market environment, 2) A simultaneous auction mechanism and portfolio optimization method in a fully decentralized market framework, 3) Binary programming and nonlinear unbalanced power flow, considering asynchronous information, to enhance resiliency in a DS, and 4) A reinforcement learning method together with an efficient search algorithm to support large scale resiliency improvement models incorporating asynchronous information.
Lan, Fujun. "Application of Optimization Techniques to Water Supply System Planning." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/323378.
Повний текст джерелаSmith, Ernest Price. "An optimal replacement-design model for a reliable water distribution network system." Diss., Virginia Tech, 1994. http://hdl.handle.net/10919/37455.
Повний текст джерелаSendil, Halil. "Operation Of Water Distribution Networks." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615484/index.pdf.
Повний текст джерелаCampisi, Salvatore. "A Water distribution system in Sicily : optimization options for the provinces of Siracusa and Ragusa /." [Beersheba, Israel] : Ben-Gurion University of the Negev, 2009. http://aranne5.lib.ad.bgu.ac.il/others/CampisiSalvatore.pdf.
Повний текст джерелаBasalike, Pie. "DESIGN, OPTIMIZATION AND ECONOMIC ANALYSIS OF PHOTOVOLTAIC WATER PUMPING TECHNOLOGIES, CASE RWANDA." Thesis, Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-28674.
Повний текст джерелаMarco, Pontus. "Design & optimization of modular tanksystems for vehicle wash facilities." Thesis, Karlstads universitet, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-79009.
Повний текст джерелаGencoglu, Gencer. "Developing A Methodology For The Design Of Water Distribution Networks Using Genetic Algorithm." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608208/index.pdf.
Повний текст джерелаwater distribution networks should be designed very meticulously. Genetic algorithm is an optimization method that is based on natural evolution and is used for the optimization of water distribution networks. Genetic algorithm is comprised of operators and the operators affect the performance of the algorithm. Although these operators are related with parameters, not much attention has been given for the determination of these parameters for this specific field of water distribution networks. This study represents a novel methodology, which investigates the parameters of the algorithm for different networks. The developed computer program is applied to three networks. Two of these networks are well known examples from the literature
the third network is a pressure zone of Ankara water distribution network. It is found out that, the parameters of the algorithm are related with the network, the case to be optimized and the developed computer program. The pressure penalty constant value varied depending on the pipe costs and the network characteristics. The mutation rate is found to vary in a range of [0.0075 &ndash
0.0675] for three networks. Elitism rate is determined as the minimum value for the corresponding population size. Crossover probability is found to vary in a range of [0.5 &ndash
0.9]. The methodology should be applied to determine the appropriate parameter set of genetic algorithm for each optimization study. Using the method described, fairly well results are obtained.
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.
Повний текст джерелаKhan, Jameel Ur Rehman. "Design and optimization of a distributed generation system with the production of water and refrigeration." [Gainesville, Fla.] : University of Florida, 2006. http://purl.fcla.edu/fcla/etd/UFE0013767.
Повний текст джерелаAlvarez, Genesis Barbie. "Control Design for a Microgrid in Normal and Resiliency Modes of a Distribution System." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/94627.
Повний текст джерелаMaster of Science
Reliable power supply from the electric grid is an essential part of modern life. This critical infrastructure can be vulnerable to cascading failures or natural disasters. A solution to improve power systems resilience can be through microgrids. A microgrid is a small network of interconnected loads and distributed energy resources (DERs) such as microturbines, wind power, solar power, or traditional internal combustion engines. A microgrid can operate being connected or disconnected from the grid. This research emphases on the potentially use of a Microgrid as a resiliency source during grid restoration to pick up critical load. In this research, controllers are designed to pick up critical loads (i.e hospitals, street lights and military bases) from the distribution system in case the electric grid is unavailable. This case study includes the design of a Microgrid and it is being tested for its feasibility in an actual integration with the electric grid. Once the grid is restored the synchronization between the microgrid and electric must be conducted. Synchronization is a crucial task. An abnormal synchronization can cause a disturbance in the system, damage equipment, and overall lead to additional system outages. This thesis develops various controllers to conduct proper synchronization. Interconnecting inverter-based distributed energy resources (DERs) such as photovoltaic and battery storage within the distribution system can use the electronic devices to improve power quality. This research focuses on using these devices to improve the voltage profile within the distribution system and the frequency within the Microgrid.
Tinh, Pham Van. "A simulation-based multi-criteria management system for optimal water supply under uncertainty." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-165776.
Повний текст джерелаHaro, Monteagudo David. "Methodology for the optimal management design of water resources system under hydrologic uncertainty." Doctoral thesis, Universitat Politècnica de València, 2015. http://hdl.handle.net/10251/45996.
Повний текст джерелаHaro Monteagudo, D. (2014). Methodology for the optimal management design of water resources system under hydrologic uncertainty [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/45996
TESIS
Briones, Maria. "Validating the Accuracy of Neatwork, a Rural Gravity Fed Water Distribution System Design Program, Using Field Data in the Comarca Ngöbe-Bugle, Panama." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7268.
Повний текст джерелаRoy, Michelle. "Investigation of Future Flow Reducer Sizes in Houses Added to an Existing Gravity Flow Water System to Ensure its Sustainability." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6580.
Повний текст джерелаBrathwaite, Joy Danielle. "Value-informed space systems design and acquisition." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/43748.
Повний текст джерелаGiraud, Xavier. "Méthodes et outils pour la conception optimale des réseaux de distribution d'électricité dans les aéronefs." Phd thesis, Institut National Polytechnique de Toulouse - INPT, 2014. http://tel.archives-ouvertes.fr/tel-00955887.
Повний текст джерелаAubel, Laforgue Sylvie. "Un nouveau média pour l'aménagement urbain intégrant un système d'information géographique et un outil de représentation vériste et tridimensionnelle du paysage : application à l'étude du projet urbain de Saint Pierre de Chartreuse." Grenoble 1, 1997. http://www.theses.fr/1997GRE10168.
Повний текст джерелаКоваленко, Владислав Вячеславович. "Дослідження режимів мереж 35/10кВ операторів системи розподілу електроенергії". Bachelor's thesis, КПІ ім. Ігоря Сікорського, 2020. https://ela.kpi.ua/handle/123456789/39563.
Повний текст джерелаIn the bachelor's thesis on "Study of 35 / 10kV network modes of electricity distribution system operators" there are two parts: the first - calculation (section 1), which implements the general power problems of calculation and optimization of modes and short circuit currents for sufficiently complex electrical networks and the second - research (section 2), which is devoted to the analysis of the regimes of 35 / 10kV schemes of Odesaoblenergo. The object of studythere is an individual 110/35/10 kV substation, 110/35 kV supply and distribution networks, and typical problem-oriented experimental or industrial models. The subject of research there are unknown mode characteristics (voltages, losses, regulating values of reactive power, currents KZ, etc.), and also models of matrices of conductivity and resistance, methods of the decision of nonlinear electric equations and other. The goal of the work - to confirm the level of engineering qualification of the bachelor's degree and according to the individual task, to develop the calculation scheme of Odesaoblenergo and determine the main characteristics (voltage, power loss, electricity consumption) for the regime days of summer and winter maximum. The bachelor's thesis contains 67 pages, 29 drawings, 7 tables, 4 illustrations and 11 literary references. To implement the task, the educational computer complex L_APEZ, industrial power complexes RAOTV, Z_REGIM, OPTIM.QT are involved. In the process of realization of tasks individual calculation schemes are developed.
Lin, Bi Liang, and 林碧亮. "Development of System Design Optimization for Water Distribution Networks." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/09211081973858889034.
Повний текст джерела國立中央大學
土木工程研究所
87
Topics related to the system design optimization for water distribution network have been discussed consistently in the literature for the past three decades. However, there are few papers on similar subject in the local publications. Given the complex nature of the water distribution system, its optimization model faces some difficulty in two major concerns- solution and practical application. This study develops a design optimization model for the water distribution network system using commercial pipe diameter as discrete variables. On solution, this model studies, improves and develops different algorithms and compares their respective applicability. On practical application, this model can be used for case study under different engineering requirements. This paper has performed a series of systematic study from theoretical propositions to practical engineering designs and obtained satisfactory results which will help the management of complex systems and offer practical applications. This study has attained the following important findings and conclusions: 1. This study used various methods to improve the solution efficiency of enumeration while retaining the characteristics of optimal solution, and its theoretical basis on optimal combination can be applied to other fields. 2. This study developed and established a rule-based heuristic approach based on the notion of evolution. Our case study results demonstrated that this approach allowed the effective finding of an economical system in a very short span, and at the same time, provided a well-working solution algorithm for large-scale system that previously had difficulty obtaining a solution. 3. When seeking solution respectively or collectively using enumeration, rule-based heuristic approach and genetic algorithm, the outcome showed that there existed a balance relationship between solution efficiency and system cost. The combination of enumeration helped improve the chance of solution, but the execution time required was relatively long. Genetic algorithm was adequate for medium-scale systems in terms of system cost and efficiency of solution finding. But for larger system, rule-based heuristic approach was more pertinent. 4. The optimization models for the design of water distribution system currently available encountered some difficulties in practical application, given the varying demands in different stages of engineering planning and the complexity of the distribution network system. The optimization model presented herein from both the theoretical and practical standpoints, with solution algorithms applied and developed, can meet the demands of practical application. In addition to enhancing the solution efficiency, the optimal design developed based on the model helped save the construction cost by 13.3% to 30.2% in comparison with conventional designs, without compromising the conformity to design criteria. 5. The design of pipe network system often put more focus on cost, while overlooking risk factors. A case in point is the design of small-region pipe network where the hydraulic power at both the main intake and auxiliary intake should be taken into account. Other risks that should be analyzed include multi-load supply pattern, the incidence of broken pipes or emergency water demand in the case fire fighting. The optimization model can give consideration to both the application and potential risks and provides a balanced point between economics and safety.
Roshani, EHSAN. "WATER DISTRIBUTION SYSTEM DESIGN AND REHABILITATION UNDER CLIMATE CHANGE MITIGATION SCENARIOS." Thesis, 2013. http://hdl.handle.net/1974/7895.
Повний текст джерелаThesis (Ph.D, Civil Engineering) -- Queen's University, 2013-04-21 13:58:08.302
MacLeod, 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.
Повний текст джерелаThesis (Master, Civil Engineering) -- Queen's University, 2010-08-26 15:01:27.174
"Investigation of Sustainable and Reliable Design Alternatives for Water Distribution Systems." Doctoral diss., 2012. http://hdl.handle.net/2286/R.I.14590.
Повний текст джерелаDissertation/Thesis
Ph.D. Construction 2012
Wang, Peng. "A Systematic Investigation of Multi-Objective Evolutionary Algorithms Applied to the Water Distribution System Problem." Thesis, 2021. https://hdl.handle.net/2440/133074.
Повний текст джерелаThesis (Ph.D.) -- University of Adelaide, School of Civil, Environmental and Mining Engineering, 2020
Broad, Darren Ross. "Water distribution system optimization using metamodels." Thesis, 2014. http://hdl.handle.net/2440/98139.
Повний текст джерелаThesis (Ph.D.) (Research by Publication) -- University of Adelaide, School of Civil, Environmental and Mining Engineering, 2014.
Byambadoo, Monkhbayar. "Optimization Techniques for Water Distribution Network Design in Mongolia." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/23947067868026663165.
Повний текст джерела明志科技大學
電機工程系碩士班
105
ABSTRACT OPTIMIZATION TECHNIQUES FOR WATER DISTRIBUTION NETWORK DESIGN IN MONGOLIA Munkhbayar Byambadoo Department of Electrical Engineering Supervisor : Dr. Chia-Der Chang June 2017 Water supply system is one of the urgent issues for Mongolia. In recent years, many streams have stopped falling groundwater levels. We are doing research on save and management of water use. Ulaanbaatar has lived in half of the Mongolia's population. Therefore, the infrastructure is very important to develop and expand. Optimization of water supply system (WSS) is extremely important. In this study is first to compare the results of optimized diameter and pressure of pipes for branches of water supply system by using Genetic Algorithm (GA) and Particle Swarm Optimization (PSO). Then the results are verified by using EPANET software on the Ulaanbaatar City water supply system. GA and PSO operations are realized on MATLAB tools. Through simulation we found that the optimization techniques are well suited for optimization of water supply systems, especially large and complex systems. The study results will provide appropriate indicators for the future expansion of water supply systems in Mongolia. Keywords—Water supply system, Genetic Algorithm, Particle Swarm Optimization, EPANET software
巫宗政, Tzong-Jeng Wu, and 巫宗政. "Indoor Distribution Antenna System Design and Optimization for HSPA Network." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/xrk7z4.
Повний текст джерела國立臺北科技大學
電腦與通訊研究所
101
With the advanced progress of High Speed Packet data Access(HSPA)network, the development of mobile communication technology has transformed from the voice service to data transmission service currently. Moreover, users of the global mobile phone take advantages of the mobile network to integrate various value-added services such as voice, multimedia streaming and community communication. According to the related study statistics, mobile users mostly access to the data network indoors, thus the indoor signal coverage rate and system capacity become key factors to determine the success of HSPA network. Since the number of users provided by HSPA network is still limited, consequently, when many users access to the network in the indoor environment, they may encounter the situation of network unavailable or jam due to the insufficient resource on the base station. Therefore, if the cell number of the indoor base station can be effectively expanded to avoid the interference effectively, the efficiency of using the mobile network resource will be improved greatly. This paper verifies expanding the small honeycomb cells respectively when implementing active and passive distributed antenna system (DAS) under the same area of indoor environment. It also measures the signal coverage scope, link quality, transmitting power and transmission rate. By the means of statistic analysis, it confirms the planning and use way suitable to the base station in the indoor hotspots. The study results show that the Active DAS with low gain antenna has a clear cell coverage scope and smaller overlapping, so the overall channel link quality Ec/Io is 3.6dB higher than that of Passive DAS, and the Pilot Pollution is decreased by 24% accordingly. With the increase of the proportion of using the high order modulation, the overall transmission performance of Active DAS is 17.7% higher than that of Passive DAS. The result of this study can provide reference for mobile communication operators in planning the HSPA network in the indoor hotzones.
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.
Повний текст джерелаBexiga, Maria Inês Cardoso. "Photovoltaic powered water pumping systems: design and optimization of an irrigation system." Master's thesis, 2014. http://hdl.handle.net/10451/15897.
Повний текст джерелаEste trabalho tem como âmbito o estudo da possibilidade do uso de energia solar fotovoltaica em sistemas de bombagem de água. Foi sugerido pela Martifer Solar o dimensionamento de um sistema de irrigação para um relvado situado na sede da empresa, em Oliveira de Frades, Portugal. A área total do relvado é 16,119m2. Inicialmente foi feito o estado da arte, onde foram discutidas as várias aplicações destes sistemas e as suas vantagens. De seguida, é descrita uma metodologia de dimensionamento, servindo como um guia para dimensionar e otimizar um sistema solar de bombagem de água. Para o dimensionamento foi abordado um método apresentado em Firatoglu et al. [1]. Primeiro foi estudada a quantidade de água necessária para a irrigação. Por se tratar de um relvado, a quantidade diária de água necessária varia ao longo dos meses desde 15m3 até 80m3. Depois, foi estudado o recurso solar para o local. Foi logo concluído que a variação da quantidade de água necessária varia de forma semelhante com a radiação solar disponível. Através do estudo de parâmetros dos vários componentes, foi feita uma correspondência entre os módulos fotovoltaicos e o motor/bomba. Foram calculadas curvas de potência máxima e curvas de pontos de equilíbrio. O principal objetivo é modelar, usando o Matlab. as duas de forma a ficaram o mais próximas possível, sem o uso de qualquer controlador eletrónico. Após o estudo de várias configurações ficou concluído que o sistema seria constituído por 14 módulos fotovoltaicos(2S×7P, com um motor com os parâmetros Kv=0.18 V/rpm e Ra=0.50Ω e com tanques de armazenamento de água. A quantidade de água necessária fica assegurada ao longo de todo o ano.
This work has the objective of studying the possible application of photovoltaic solar energy to supply water pump systems. It was suggested by Martifer Solar to size an irrigation photovoltaic water pumping system. This system is studied for the location of the headquarters of the company, in Oliveira de Frades, Portugal. The total area to irrigate was 16,119 m2. A state-of-the art was made first, where advantages and different applications of these systems were presented. After, the methodology is described as a guide to sizing and optimize solar water pumping systems. For that sizing, a multi-step method was used presented in Firatoglu et al. [1]. First, water demand was studied. Because it is a grass field, values of water daily demand change from 15m3 to 80m3, depending on the month. After, average data from solar resource was studied. The first conclusion to achieve was that water demand changes seasonally in a similar way as solar radiation available. A match between PV array and motor/pump assembly was made, through the study of manufacturer’s data of the different components. Curves from maximum power point and equilibrium operation point were calculated. The main goal is to match as much as possible both curves, with no use of any electronic controller. The modulation of the system was made using Matlab. After the study of several configurations, it was concluded that the system would have 14 PV panels, (2S×7P) with a DC motor with Kv=0.18 V/rpm and Ra=0.50Ω and storage water tanks. It is assured that water demand is fulfilled throughout the year.
Gibbs, Matthew S. "Real-coded genetic algorithm parameter setting for water distribution system optimisation." 2008. http://hdl.handle.net/2440/49644.
Повний текст джерелаhttp://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1325448
Thesis (Ph.D.) - University of Adelaide, School of Civil, Environmental and Mining Engineering, 2008
Gibbs, Matthew S. "Real-coded genetic algorithm parameter setting for water distribution system optimisation." Thesis, 2008. http://hdl.handle.net/2440/49644.
Повний текст джерелаThesis (Ph.D.) - University of Adelaide, School of Civil, Environmental and Mining Engineering, 2008