Tesis sobre el tema "Optimisation de la production hydro-électrique"
Crea una cita precisa en los estilos APA, MLA, Chicago, Harvard y otros
Consulte los 25 mejores tesis para su investigación sobre el tema "Optimisation de la production hydro-électrique".
Junto a cada fuente en la lista de referencias hay un botón "Agregar a la bibliografía". Pulsa este botón, y generaremos automáticamente la referencia bibliográfica para la obra elegida en el estilo de cita que necesites: APA, MLA, Harvard, Vancouver, Chicago, etc.
También puede descargar el texto completo de la publicación académica en formato pdf y leer en línea su resumen siempre que esté disponible en los metadatos.
Explore tesis sobre una amplia variedad de disciplinas y organice su bibliografía correctamente.
Heintzmann, Alexandre. "Modèles et algorithmes pour l'optimisation de la production hydro-électrique". Electronic Thesis or Diss., Université de Toulouse (2023-....), 2024. http://www.theses.fr/2024TLSEP022.
Texto completoThe Hydro Unit Commitment problem (HUC) is a difficult problem playing a major role in the scheduling of daily electricity production at EDF. In this thesis, we study different models and algorithms to solve the special case of the single-unit HUC problem (1-HUC). Studying this case is relevant for the following reasons. On the one hand, there are real world instances of the 1-HUC problem which cannot be solved efficiently by current approaches. On the other hand, it makes it possible to study individually two particular sources of difficulty. One stems from the presence of non-linearities, in particular the power which is a non-convex non-concave function of the flow and the reservoirs' volume. The other is due to the set of hydraulic constraints, specifically the volume minimum and maximum bounds, as well as target volumes for the reservoirs.In a first part, modeling alternatives for the non-linear 1-HUC, focusing on the power function, are proposed. The aim is to identify a model which can be solved efficiently, with a good trade-off between computational time and precision. The seven proposed modeling alternatives cover a large panel of modeling families. These models are compared on a set of instances with variations on five features that impact the solution. This comparative study enables us to identify three efficient types of model: a model with polynomial functions of degree 2, a model with a piecewise linear function, and a model using a finite set of flows. As the latter model is similar to the current model at EDF, in the following we present algorithms dedicated to it.In the second part, a polyhedral study is proposed to improve the solving approach of the 1-HUC problem. The idea is to focus on the combinatorial aspects, which means considering the relationship between the bounds on volumes and the discrete set of flows. For this purpose, we introduce a variant of the knapsack problem, with Symmetric weight and Chain Precedences (SCPKP). For the SCPKP, we characterize necessary facet-defining conditions, which are also proven to be sufficient in some cases. A two-phase branch-and-cut algorithm based on these conditions and on the symmetric aspect of the SCPKP is devised. The efficiency of this algorithm is then shown experimentally against state-of-the-art algorithms. The results of this polyhedral study of the SCPKP, as well as the proposed algorithms, are then extended to the 1-HUC problem.In the third part, an efficient solving technique based on a graph representation of the 1-HUC problem is proposed, taking into account of the hydraulic constraints. It appears that the 1-HUC problem is a special case of the Shortest Path Problem with Resource Windows (RWSPP). We propose two graph algorithms. The first one is an exact variant of the A* algorithm, using a dual bound dedicated to the 1-HUC problem. In comparison with two state-of-the-art approaches, we show numerically that this algorithm is more efficient for handling a specific case of 1-HUC. The aim of the second algorithm is to take into account a wider set of hydraulic constraints. The idea is based on the concept of bi-objective optimization, for which the second objective corresponds to a relaxation of the volume. The advantage compared to a classical bi-objective optimization is that it is possible to use the minimum and maximum bounds on the volume to reduce the search space and to guide the enumeration of solutions. We show numerically, on a large set of real instances, that this algorithm outperforms three state-of-the-art approaches. Although this algorithm was designed to solve the 1-HUC problem, it is defined in a generic way for any RWSPP with a single resource
Morales, Figureroa Dario. "Optimalité des éléments d'un système décentralisé de production d'énergie électrique". Paris 11, 2006. http://www.theses.fr/2006PA112081.
Texto completoNguyen, Ngoc Phuc Diem. "Optimisation de systèmes de production intermittents non conventionnels couplés au réseau électrique". Phd thesis, Université de Grenoble, 2011. http://tel.archives-ouvertes.fr/tel-00595849.
Texto completoBen, Salem Sinda. "Gestion robuste de la production électrique à horizon court terme". Phd thesis, Ecole Centrale Paris, 2011. http://tel.archives-ouvertes.fr/tel-00594242.
Texto completoSantiago, Gomez Mirna Patricia. "Production, caractérisation et étude structurale de l’Hydroperoxyde lyase du poivron vert exprimée par la levure Yarrowia lipolytica : optimisation de la production d’hexanal". Dijon, 2007. http://www.theses.fr/2007DIJOS019.
Texto completoThe green bell pepper Hydroperoxide lyase enzyme expressed by the yeast Yarrowia lipolytica allows the hydroperoxide fatty acids transformation to aldehydes and alcohols. In this word, the purification and characterization of enzyme were realized: the participation of radicals during the catalysis of hydroperoxide lyase was founded and it has been observed that the radical species might be an alkyl or alkoxyl radical linked to the enzyme, which affected the active site of the enzyme losing his activity. The enzymatic activity enhanced significantly (42%) at low oxido-reduction potential. The secondary structure of enzyme is composed by 13% α-helix and 29% β-sheet. Moreover the loss of α-helix decreased the activity enzymatic. A factorial plan was applied to determine the factors influent on the production of hexanal: fatty acids hydroperoxides (100 mM) and dithiothreitol (100 mM)
Bronschlegell, Augusto. "Optimisation aérothermique d'un alternateur à pôles saillants pour la production d'énergie électrique décentralisée". Phd thesis, Université de Valenciennes et du Hainaut-Cambresis, 2012. http://tel.archives-ouvertes.fr/tel-00768249.
Texto completoBornschlegell, Augusto Salomao. "Optimisation aérothermique d'un alternateur à pôles saillants pour la production d'énergie électrique décentralisée". Thesis, Valenciennes, 2012. http://www.theses.fr/2012VALE0023/document.
Texto completoThis work relates the thermal optimization of an electrical machine. The lumped method is used to simulate the temperature field. This model solves the heat equation in three dimensions, in cylindrical coordinates and in transient or steady state. We consider two transport mechanisms: conduction and convection. The evaluation of this model is performed by means of 13 design variables that correspond to the main flow rates of the equipment. We analyse the machine cooling performance by varying these 13 flow rates. Before starting the study of such a complicated geometry, we picked a simpler case in order to better understand the variety of the available optimization tools. The experience obtained in the simpler case is applyed in the resolution of the thermal optimization problem of the electrical machine. This machine is evaluated from the thermal point of view by combining two criteria : the maximum and the mean temperature. Constraints are used to keep the problem consistent. We solved the problem using the gradient based methods (Active-set and Interior-Point) and the Genetic Algorithms
Bridier, Laurent. "Modélisation et optimisation d'un système de stockage couplé à une production électrique renouvelable intermittente". Thesis, La Réunion, 2016. http://www.theses.fr/2016LARE0038/document.
Texto completoThis thesis aims at presenting an optimal management and sizing of an Energy Storage System (ESS) paired up with Intermittent Renewable Energy Sources (IReN). Firstly, wedeveloped a technico-economic model of the system which is associated with three typical scenarios of utility grid power supply: hourly smoothing based on a one-day-ahead forecast (S1), guaranteed power supply (S2) and combined scenarios (S3). This model takes the form of a large-scale non-linear optimization program. Secondly, four heuristic strategies are assessed and lead to an optimized management of the power output with storage according to the reliability, productivity, efficiency and profitability criteria. This ESS optimized management is called “Adaptive Storage Operation” (ASO). When compared to a mixed integer linear program (MILP), this optimized operation that is practicable under operational conditions gives rapidly near-optimal results. Finally, we use the ASO in ESS optimal sizing for each renewable energy: wind, wave and solar (PV). We determine the minimal sizing that complies with each scenario, by inferring the failure rate, the viable feed-in tariff of the energy, and the corresponding compliant, lost or missing energies. We also perform sensitivity analysis which highlights the importance of the ESS efficiency and of the forecasting accuracy and the strong influence of the hybridization of renewables on ESS technico-economic sizing
Šumbera, Jiří. "Application of optimisation methods to electricity production problems". Doctoral thesis, Vysoká škola ekonomická v Praze, 2009. http://www.nusl.cz/ntk/nusl-196939.
Texto completoApparigliato, Romain. "Règles de décision pour la gestion du risque : Application à la gestion hebdomadaire de la production électrique". Phd thesis, Ecole Polytechnique X, 2008. http://pastel.archives-ouvertes.fr/pastel-00004166.
Texto completoOré, Albornoz Ernesto. "Sur les méthodes de décomposition proximale appliquées à la planification de production électrique en environnement incertain". Thesis, Université Clermont Auvergne (2017-2020), 2018. http://www.theses.fr/2018CLFAC083/document.
Texto completoChalal, Lamine. "Coordination de systèmes multisources pour favoriser la production d’énergie électrique renouvelable". Thesis, Lille 1, 2013. http://www.theses.fr/2013LIL10006/document.
Texto completoThis thesis is devoted to the supervision of the hybrid power generation system composed of various types of sources including renewable sources and electrochemical storage elements. Chapter I is devoted to the state of the art of supervision of such hybrid systems. In this chapter, the context and the scope of our study are defined and the advantages-disadvantages of each such strategy are presented. Our vision for the supervision of a multi-sources system that integrates sources of renewable resources is presented thereafter. In Chapter II we specify the hybrid system and the models of each component in order to integrate them into a supervision structure. Chapter III deals with the design of a supervisory predictive controller which optimizes the power flow of a renewable hybrid system (solar panels, micro-turbine and battery). Short time predictions of the solar power and the power reference are embedded in the supervisor. The performance index integrates the environmental impact, the cost of fuel, battery cycling and the energy delivery. Simulations and a real-time application of a model-in-the-Loop plant are carried out to illustrate the applicability and electiveness of the proposed supervisory predictive control design. Chapter IV aims to show the generic properties of the proposed supervisory system. In fact, a wind turbine has been added to the hybrid system and the cost function has been modified. The real-time simulations show the effectiveness of the proposed power management system. Then, the turbine is controlled in degraded mode in order to reduce the impact of wind speed fluctuation with respect to the power reference. The cost function has been modified to meet these new requirements. Finally, the potential benefits of considering a dynamic prediction horizon are explained. The variation of the prediction horizon is performed according to the relevance of the predictions of renewable resources. Tested on an experimental platform combining real components and real-time simulation models (Model-in-the-loop), the results show the validity of all the developed concepts
Zhang, Lu. "Optimisation du dimensionnement de centrales hybrides de production d'énergie électrique associant les énergies renouvelables et traditionnelles sur un territoire donné". Le Havre, 2013. http://www.theses.fr/2013LEHA0006.
Texto completoThe rapid depletion of conventional energy sources , increasing global demand for energy and the fight against emissions in recent years have renewed interest in the development of renewable energy sources. In this context, the objective of this work is to contribute to finding solutions to the problem of Sizing Electric Hybrid Systems Dispersed Generation of Electricity (SEHPRE) by combining renewable and conventional sources for remote sites where the price of the extension is prohibitive. Our approach has been to formulate the problem of sizing SEHPRE in a nonlinear constrained optimization problem whose main objective function is the total cost of SEHPRE over 20 years. After a review, based on a scientific literature, the energy models of various elements constituting a SEHPRE are developed based on available meteorological data. The program OPTISEH dedicated to the sizing optimization of SEHPRE was then developed and implemented in MATLAB®. This code has been tested under the design of several structures SEHPRE to satisfy the consumption profile of a residential unit on a small power site in the region of Le Havre. Finally and for each optimal structures SEHPRE obtained a detailed analysis linking these solutions to the site and energy resources consumption profile was performed and discussed their relevance
Nguyen, Thành Nhân. "Programmer le développement soutenable dans un pays en voie de développement : une optimisation sociale du secteur électrique au Vietnam". Paris, EHESS, 2011. http://www.theses.fr/2011EHES0118.
Texto completoThe kernel of this dissertation aims to exploit by optimisation methods and empirical studies the issues of sustainable development in the Vietnamese power sector for the next thirty years. It then examines the ways to implement sustainable energy options for the power sector in practice. There are two parts: (i) In the fust part, using a comparative analysis and a vulnerability analysis that is based on the Integrated Resource Planning (IRP) simulation, I analyze energy-development-related vulnerabilities that the sector could face, in terms of economic and socio-environmental dimensions. I further develop the IRP model, in such a way representing realistically marginal abatement costs of carbon reduction by considering non-zero carbon values and carbon emission constraints, in order to simulate sustainable energy supply options for the power sector. (ii) In the second part, I study the major barriers against the wider adoption of sustainable energy development options in practice by using analytical hierarchy process-based formaI surveys among national experts. Then, I use an empirical analysis approach to examine different appropriate policy means including incentive instruments/schemes and sector reform for such sustainability of the power sector. To the end, I analyze the access to feasible financing sources for sustainable development in the Vietnamese power sector
Aubry, Judicaël. "Optimisation du dimensionnement d'une chaîne de conversion électrique directe incluant un système de lissage de production par supercondensateurs : application au houlogénérateur SEAREV". Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2011. http://tel.archives-ouvertes.fr/tel-00662488.
Texto completoAubry, Judicaël. "Optimisation du dimensionnement d’une chaîne de conversion électrique directe incluant un système de lissage de production par supercondensateurs : application au houlogénérateur SEAREV". Thesis, Cachan, Ecole normale supérieure, 2011. http://www.theses.fr/2011DENS0042/document.
Texto completoThe work presented in this thesis sets forth the study of the sizing of a direct-drive electrical conversion chain for a direct wave energy converter (SEAREV). This electrical chain is made up of a permanent magnet synchronous generator attached to a pendular wheel and a power-electronic converter made up of two three-phase pulse width modulation bridge, one controlling the generator, the other allowing injecting electrical energy into the grid. In addition, an energy storage system (bank of supercapacitors) is intended to smooth the power output. The sizing of all these components needs an operating cycle optimization approach, in a system context with strong multi-physics coupling, more particularly between hydrodynamical and electromechanical parts. At first, the generator-converter set, whose role is to damp the pendular movement of an internal wheel, is optimized with a view to minimize the cost of energy (kWh production cost). This optimization, based on torque-speed operating profiles, is carried out considering a strong coupling with the wave energy converter thanks to the consideration as design variables, some relatives to the generator-converter sizing but also some relatives to the damping law of the pendular wheel. In addition, the consideration of a flux-weakening strategy, interesting to ensure a constant power operation (levelling), allows, as soon as the sizing step, to deal with the generator-converter interaction. In a second step, the rated energy capacity of the energy storage system is being optimized with a view of the minimization of its economical life-cycle cost. To do this, we define quality criteria of the power output, including one related to the flicker, and we compare three energy managment rules while taking into account the power cycling aging of the supercapacitors due to the voltage and their temperature. In a third step, from yearly sea-states data, we provide sizings of the direct-drive electrical conversion chain that are the best trades-offs in terms of total electrical produced energy and economical investment cost
Buzila, Petronela-Valeria. "Gestion énergétique optimale des installations fixes de traction électrique ferroviaire hybrides". Thesis, Lille 1, 2015. http://www.theses.fr/2015LIL10084/document.
Texto completoIn railway traffic increasing and electricity market liberalization context, railway actors are determined to consider innovative solutions to handle the increasing energy demand for electrical traction. One of the solution concerns the integration of decentralized production and energy storage systems in the railway power substations (RPS). The present research work aims to contribute to the design of a sizing and intelligent energy management tool for the hybrid RPS (HRPS). In the first part of the dissertation, a methodology for the techno-economical design of the HRPS is described. From a HRPS generic architecture, an optimization approach is proposed by considering cycles of dimensional and system control variables. Furthermore, an energy flow model permits to apply the optimization methodology on a study case and to compare different optimization scenarios in order to analyze the sizing and optimal planning of electrical sources and loads for a typical day. After sizing the HRPS, an energy management methodology is developed in order to achieve energy, economic and environmental objectives at different time levels of HRPS supervision. Several energy management scenarios are evaluated in simulation through adapted system gain indicators. An optimization study of the supervision parameters provides additional answers concerning the influence of the system design on its management strategy. Eventually, the HRPS energy management robustness is analyzed during an experimental setup phase at laboratory power scale
Kébé, Abdoulaye. "Contribution au pré dimensionnement et au contrôle des unités de production d’énergie électrique en site isolé à partir des énergies renouvelables : Application au cas du Sénégal". Thesis, Paris 11, 2013. http://www.theses.fr/2013PA112281/document.
Texto completoThe energy crisis characterized by the oil products price rising and the imperatives of sustainable development do that renewable energies are an alternative today witch attract the interest of several research teams. Senegal, sub-Saharan country, not oil producer is not spared by this crisis. The consequence of this is a low coverage of the country (especially rural areas) by the national grid. For solving this, the new orientation of the energy policy focuses on the use of renewable energy particularly solar and wind.The main objective of this thesis is to identify a methodology of design of an isolated site of electrical energy production from alternative energies It is consists on, from site characteristics (energy resources, energy requirements):- to develop an approach that allows the choice of network architecture and sizing optimally all components of the network (machines, sources and storage devices) taking into account all the constraints- to design a device for controlling components and managing the energy flowsThis thesis contains three chapters:- Chapter 1 - poses the problem of energy in Senegal. The institutional organization of the electricity sub-sector and the ongoing projects are presented. Also, a study of micro- architectures networks is made.- Chapter 2 deals with tools and software. A comparative study of the main software of analysis, design and simulation of micro- network is realized. The components of our system have been modeled. Optimization methods and tools for graphical representation (Bond Graph, GIC and EMR) systems were presented. A survey and a literature review allowed us to evaluate the energy potential of the site and the needs of populations.- Chapter 3: This is the application of our tool on an isolated site identified in Senegal (MBoro / Mer). Optimization through the Annualized Cost of the System (ACS) objective function has allowed us to scale our system optimally. As the control system with Energetic Macroscopic Representation (EMR) has been designed.For further work should be considered a treatment of problems of availability of the system through monitoring and supervision of the system. The socio- economic component is also integrated in the future to meet the changing needs and habits of the population
Kébé, Abdoulaye. "Contribution au pré dimensionnement et au contrôle des unités de production d'énergie électrique en site isolé à partir des énergies renouvelables : Application au cas du Sénégal". Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00925530.
Texto completoPham, Duy An. "Gestion Optimale d’une installation hybride au Vietnam". Thesis, Reims, 2018. http://www.theses.fr/2018REIMS034.
Texto completoAs a rapidly industrializing country, the economy of Vietnam's has become very energy intensive. Thought, 66.9% of Vietnam's population lives in rural area in 2014. Many people still live in remote farming areas that are stricken with poverty. The Vietnam Master Power Plan VII (2011) indicates that still 818,947 households are not connected to the national grid, and 759,986 households do not have any access to electricity.Vietnam has high potential on renewable energy resources (Wind, Solar, Hydro, Biomass, and Geothermal). Using hybrid renewable energy system is considered to be one of the most feasible options to bring electricity to local people to improve life quality. The off-grid communities in Vietnam are located mainly in the north-west of Vietnam, near the border with Laos and China, where exist a great potential on Hydro power and/or solar power. A micro hydro power plant cannot satisfy the load demand, especially in dry season. Therefore, additional energy sources such as PV arrays have been suggested to complement power efficiency. Thus, this working discusses the pre-feasibility for small hybrid power generation system consisting of a PV generating unit with storage and a micro hydro generation unit for off-grid areas in Vietnam.The objective of this thesis is to optimize the production of renewable electricity for this type of small hybrid power generation system. For the photovoltaic conversion system, a one input fuzzy logic controller for maximum power point tracking is designed. For the Micro-hydro power plants (MHPP), a Pelton turbine is coupled to a would rotor synchronous generator to supply electricity for a three phase load. To keep the MHPP frequency and voltage outputs constant (50 Hz, 230 V) in spite of changing user loads, the controller is necessary. The experimental results of MHPP frequency and voltages control show the ability of our controller. For the realization of small hybrid power generation, a fuzzy supervisor is adapted to obtain an optimal behavior of the system. Finally, a study on the advantages of this type of hybrid system is carried out (improvement of adult training, increased night working hours, and reduction fuel costs). This thesis contributes to the knowledge of Renewable Energy (RE) by revealing the suitable usability and prospects of RE resources to the government and other local or international investors in Vietnam
Hafsi, Karem. "Approche distribuée basée sur un système multi-agent pour l'optimisation énergétique d'un micro-réseau de distribution DC". Electronic Thesis or Diss., Université Grenoble Alpes, 2024. http://www.theses.fr/2024GRALT004.
Texto completoThe scientific contribution of this thesis focuses on addressing specific challenges relatedto the stability and optimization of direct current (DC) distribution networks. This researchaims to develop control strategies and advanced optimization algorithms to maximize theintegration of renewable energy sources in DC while minimizing energy losses in order toachieve self-sufficiency. In pursuit of this objective, we have proposed in this work a hardware and a software architecture. The hardware architecture relies on two DC electrical distribution technologies, namely Power over Ethernet (PoE) and Power over Data Lines (PoDL). With these two technologies, it is possible to achieve at least a 7% improvement in energy efficiency when the energy source is in DC, such as photovoltaic energy or energy stored in batteries. Integrating these technologies into buildings creates a more flexible distribution system, allowing for the incorporation of loads in microgrid stabilization. PoE powers devices via Ethernet, while PoDL enables IP communication and power injection throughthe existing electrical wiring infrastructure.The software architecture that we have proposed in this work is based on reactive communication among the actors of the DC network, thus ensuring stability and safety. The method relies on a coordinated multi-agent system for context-aware decisions, maximizing the benefits of the DC network while ensuring stable and energy-efficient operation. Implementing a reactive electrical distribution system is a major challenge. The decentralized nature of this system requires a communication protocol capable of meeting latencyand flexibility requirements. Therefore, after evaluating several protocols, we have validated that the Data Distribution Service (DDS) protocol stands out for its real-time performance, offering well-bounded and controlled latency. Due to its distributed structure and advanced data management capabilities, DDS can ensure dependable and anticipatable real-time communication.In addition to the reactive communication protocol, we have used a multi-agent approachfor its benefits like uncertainty management, flexibility, scalability, and distributed decision-making. However, their implementation in a context where microgrid reactivity and stability are essential represents a particular challenge. Within this specific context, we have developed a coordination-based multi-agent system architecture with well-controlled interactions and latencies. Furthermore, we have proposed an optimization method based on the Hamiltonian cycle from graph theory to optimize the latencies of the agents in their tasks. The proposed multi-agent approach and optimization algorithms aim to simultaneously address the reactivity requirements of the control system and the challenges related to optimizing energy management in the DC microgrid
Phrakonkham, Sengprasong. "Contribution au pré dimensionnement et à l'optimisation des sites de production d'énergie électrique en site isolé à partir des énergies renouvelables : application au cas du Laos". Thesis, Paris 11, 2012. http://www.theses.fr/2012PA112138.
Texto completoSince 2004, a collaboration between Université Paris Sud of France and the Department of Electrical Engineering Faculty of Engineering, National University of Laos (NUOL) has been carried out on the control of power electronics for the management of renewable energies source in Laos. Therefore in 2009, the French Government has funded a PhD thesis on the development of a designing tool for the early-sizing of renewable electricity production for isolated villages in Laos. This thesis report is organized in three chapters:Chapter I presents a short review of the status and development plans for the electrification of Laos. Then, based on a two-month field study in Northern Laos, analyses of energy consumptions of households in isolated villages and available renewable sources, using small scale hydro power plants and solar systems among others, are presented. Afterward, micro-grid configurations and technologies adapted to Laos are discussed. Obtained results are used in the next chapters as specifications for the designing tool.Chapter II focuses on software tools for system design and system modeling. First, a short review of the existing early-sizing tools for renewable energy sources for isolated villages is presented. But an analysis of evaluated software's such as LEAP, HOMER, HOGA, etc. shows that they are not opened enough to facilitate the development of a flexible and scalable designing too. Thus, Matlab/Simulink software is chosen as an open and highly adaptable architecture research tool. Then, specific models for renewable sources, storage devices, grid configuration are developed in order to facilitate the optimization procedures of an off-grid system design. After that, a short review of the existing optimization algorithms, available in Matlab, is carried out. Then, a paralleled mono-objective Genetic Algorithm is configured and applied in the next chapter.Chapter III presents several designs of isolated villages in Laos, using renewable energies. The specifications focus on isolated villages of about 50 houses for 120 inhabitants. The economic aspect is a key point in order to minimize costs of designed system while satisfying daily load demands of the village. For this task, locally available natural resources such as rivers and solar radiation are considered as energy sources. Various optimizations using continuous and discrete optimization algorithms are conducted taken into account the sources constraints and a short review of the existing hybrid system performance indicators is carried out, such as: Loss of Power Supply Probability, Forced outage rates, Annualized Cost of System, Levelized Cost of Energy, etc. Finally, the results obtained in this thesis show that renewable sources can be used at a reasonable price for off-grid electrification of isolated villages in Laos. Moreover, the developed designing tool can easily be adapted to new models of renewable sources and storage devices, which is the main interest of a designing tool for the early-sizing of off-grid renewable electricity production for isolated villages in Laos
Huet, Lila. "Role of electric flexibility in the future French grid with high renewable integration". Thesis, KTH, Energiteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-263063.
Texto completoDet franska elnätets funktion beror på balansen mellan elproduktionen och efterfrågan. Transmissionssystemoperatören, RTE, ansvarar för nätets stabilitet och säkerhet. Idag följer den elektriska generationen variationerna i efterfrågan. Miljömässiga frågor är emellertid snabba för att utveckla nya strategier och strategier för energiövergång. Utvecklingen av Smart Grids, den osäkra framtiden för kärnkraftsproduktion, den massiva integrationen av förnybara källor är deras fokus. Vidare är generering av förnybara energikällor intermittent och kan inte kontrolleras. Den nuvarande strategin för balans mellan produktion och efterfrågan utmanas. Elnätet måste justeras genom att lägga till mer elektrisk flexibilitet för att säkerställa stabiliteten. Den elektriska flexibiliteten är vanligtvis förknippad med lagringsteknik som batterier eller pumpstationer. En allmänt erkända tekniska används för att definiera denna uppfattning och att utvärdera den tekniska och ekonomiska mognaden hos olika elektriska flexibilitetsvektorer. Följande undersökningar grundar sig på ett urval av framtida scenarier, utvecklingsplaner som redan lanserats i Frankrike, och föreslår en betydande andel förnybara energikällor i en framtida energimix och nuvarande franska energidata. Två studier utfördes på olika perimetrar: på Bretagne-regionen och i Frankrike. En utvärdering vid 2050 utförs för att bestämma belastningsfaktorerna för intermittent energi, förbrukning och återstående efterfrågan i Bretagne. På grundval av dessa framtida uppskattningar kan ett behov av elektrisk flexibilitet bestämmas för Bretagne-regionen. Denna första studie lyfter fram ett problem som rör framtida behov av elektrisk flexibilitet. Men eftersom balansen mellan produktion och konsumtion uppnås på nationell nivå krävs en andra studie om Frankrike. Det franska behovet av elektrisk flexibilitet uppskattas sedan genom en linjär optimering som utvärderar den energiproduktion som krävs för att uppnå en generation / konsumtionsbalans med hänsyn tagen till energikällans meriteringsordning.
Le fonctionnement du réseau électrique français repose sur l’équilibre entre la production et la consommation d’électricité. Le gestionnaire du réseau de transport, RTE, est responsable de la stabilité et de la sécurité du réseau. Aujourd’hui, la production électrique s’adapte aux variations de la consommation. Cependant, des préoccupations environnementales incitent à la mise en place de nouvelles stratégies et politiques pour la transition énergétique. Le développement d’un réseau intelligent, l’avenir incertain du nucléaire et l’intégration massive d’énergies renouvelables sont au centre de celles-ci. De plus, la production électrique des énergies renouvelables s’avère intermittente et fatale. La stratégie actuelle du maintien de l’équilibre production/consommation est remise en question. Le système électrique doit être repensé en y intégrant plus de flexibilité électrique pour en garantir la stabilité. La flexibilité électrique est usuellement associée aux technologies de stockage comme les batteries électrochimiques et les STEP hydrauliques. Un état de l’art permet de définir précisément cette notion et d’évaluer la maturité technologique et économique en France de ces différents vecteurs de flexibilité électrique. L’objet des recherches suivantes est basé sur une sélection de scénarios prospectifs, de plans de développement d’ores et déjà lancés en France, proposant une part importante d’énergies renouvelables dans un futur mix énergétique et des données énergétiques actuelles françaises. Deux études ont été menées sur différents périmètres : sur la région Bretagne et sur la France entière. Une évaluation à 2050 est effectuée pour déterminer facteurs de charge des énergies intermittentes, consommation et demande résiduelle en Bretagne. A partir de ces estimations prospectives, un besoin en flexibilité peut être déterminé sur le périmètre de la Bretagne. Cette première étude permet de mettre en exergue une problématique liée aux futurs besoins de flexibilité électrique. Cependant, l’équilibre entre production et consommation étant réalisé à un niveau national, une seconde étude sur le périmètre français est nécessaire. Le besoin français en flexibilité est alors estimé par le biais d’une optimisation linéaire qui évalue la production énergétique nécessaire pour obtenir un équilibre production/consommation en tenant compte de la préséance économique.
Bouche, Jean-Marc. "RESOLUTION DU PROBLEME DE LA MOBILISATION DE LA RESERVE TERTIAIRE AVEC PRISE EN COMPTE DU RESEAU DE TRANSPORT A ELECTRICITE DE FRANCE : CONCEPTION ET REALISATION D'UN OUTIL D'AIDE A L'OPERATEUR". Phd thesis, 1997. http://tel.archives-ouvertes.fr/tel-00881677.
Texto completoAmelete, Sam. "Gestion des actifs, industrie 4.0 et efficacité de la maintenance". Thèse, 2020. http://depot-e.uqtr.ca/id/eprint/9670/1/eprint9670.pdf.
Texto completo