Academic literature on the topic 'Résilience électrique'
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Journal articles on the topic "Résilience électrique":
Pellegrino, Margot, and Marika Rupeka. "Contribution des centrales électriques virtuelles à la résilience du réseau électrique." Flux N° 132, no. 2 (August 18, 2023): 22–44. http://dx.doi.org/10.3917/flux1.132.0022.
Bernicot, Marine, Luc Deroo, and Benjamin Peltié. "Synergie hydro-solaire : Recherche d’un optimum." E3S Web of Conferences 346 (2022): 04013. http://dx.doi.org/10.1051/e3sconf/202234604013.
Burtin, Alain, and Sylvie Parey. "Résilience des systèmes électriques face au changement climatique." Annales des Mines - Responsabilité et environnement N° 106, no. 2 (May 6, 2022): 54–58. http://dx.doi.org/10.3917/re1.106.0054.
Nzepang, Fabrice, Silvain Raoul Fotso, and Olivier Ewondo Mbebi. "Impact des délestages sur l’efficience technique des firmes manufacturières au Cameroun." Revue d'économie industrielle, 2023, 73–111. http://dx.doi.org/10.4000/11x9q.
Dissertations / Theses on the topic "Résilience électrique":
Baina, Amine. "Controle d'accès pour les grandes infrastructures critiques. Application au réseau d'énergie électrique." Phd thesis, INSA de Toulouse, 2009. http://tel.archives-ouvertes.fr/tel-00432841.
Baïna, Amine. "Contrôle d'Accès pour les Grandes Infrastructures Critiques : application au réseau d'énergie électrique." Toulouse, INSA, 2009. http://eprint.insa-toulouse.fr/archive/00000296/.
Because of its physical and logical vulnerabilities, critical infrastructure (CI) may suffer failures, and because of the interdependencies between CIs, simple failures can have dramatic consequences on the entire infrastructure. In our work, we mainly focus on information systems and communications (CII: Critical Information Infrastructure) dedicated to the electrical power grid. We proposed a new approach to address security problems faced by an IIC, particularly those related to access control and collaboration. The goal of this study is to provide each organization belonging to the IIC the opportunity to collaborate with others while maintaining control over its data and its internal security policy. We modeled and developed PolyOrBAC, a platform for collaborative access control, based on the access control model OrBAC and on the Web Services technology, this platform is applicable in the context of a critical infrastructure in general, and more particularly to an electrical power grid
Rodriguez, Velasquez Rusber Octavio. "Impact characterisation on the low-voltage electrical networks resilience level facing the integration of photovoltaic generation and hydrogen-based energy storage." Electronic Thesis or Diss., Bourgogne Franche-Comté, 2023. http://www.theses.fr/2023UBFCD047.
The installed capacity of on-grid photovoltaic (PV) solar systems is growing in medium-voltage (MV) and low-voltage (LV) networks composed of residential and commercial users. In addition, energy storage systems (ESS) are being used to improve the performance of distributed generation and self-generation systems that incorporate renewable energy. The unplanned and inadequate interconnection of PV and ESS can cause alterations in the operation of electrical networks. These could also alter the response of the electrical system to low or high-impact disturbance events. This fact can be favourable or harmful and can be overcome by the power grid without requiring interventions such as reconfigurations or corrective manoeuvres. The ability to withstand, absorb and overcome adverse events can be defined as "network electrical resilience". Resilience is a concept gaining strength in power systems, microgrids and low-power electrical installations. It evaluates their performance against disruptive events.The approaches mainly correspond to high-impact, low-probability (HILP) events such as natural disasters and intentional attacks affecting the electrical systems infrastructure. However, resilience can encompass medium and low-impact events such as minor infrastructure accidents, light faults, and supply disturbances. Resilience assessment advances on the LV networks include vulnerability to natural disasters, the probability of power outages, and service quality. These studies usually use approaches independent of each other, leaving a gap between their relationship and interpretation. Then, there is a need to consolidate a resilience assessment strategy to guide the analysis of vulnerabilities and strengths in the same direction.Thus, this thesis proposes a comprehensive approach to evaluate electrical resilience for LV networks. It compiles quantitative strategies for studying electrical resilience, focusing on LV systems. It presents a methodology integrating the electrical system infrastructure's fragility, the supply's continuity, and the service's quality. The potential favourable effects of integrating hydrogen-based ESS (H2-ESS) in LV networks are also considered to increase the reliability of the LV networks. The proposed approach is applied in the LV network of the Electrical Engineering Building (EEB-UIS) at the Universidad Industrial de Santander (UIS), Colombia. For this purpose, the EEB-UIS network has been equipped with smart meters at the supply nodes, the PV system coupling point and the load board circuits. Information on power supply outages during 2012-2021 was also collected.The case study analysis allows for testing the effectiveness of the comprehensive resilience evaluation proposed for LV networks. The assessment regarding the actual conditions of the EEB-UIS indicates that its electrical infrastructure has a low risk of collapse due to HILP events. Its reliability could be strengthened by increasing the backup system's coverage of the non-critical loads. Operation resilience analysis shows a general alert for overvoltage issues and load unbalance. Then, a feedback analysis is developed to determine ways to strengthen electrical resilience. The proposed strategies are sizing H2-ESS as a power backup system and implementing an energy management strategy. The EEB-UIS power grid is modelled in MATLAB & Simulink, and quasi-static power flows are run. The simulations allow evaluation of the influence of the H2-ESS's location, installed capacity and operation mode on the LV network performance. It is identified that proper distributed sources management can strengthen electrical resilience, mainly in reliability and operation quality. The overall result shows a comprehensive resilience analysis and the possibility of extending the methodology to microgrids and LV distribution networks
Dkhili, Nouha. "A model-based predictive control strategy for low-voltage power distribution grids with prolific distributed generation in Occitania." Thesis, Perpignan, 2020. https://theses-public.univ-perp.fr/2020PERP0037.pdf.
The term ''smart grid'' refers to a modern power grid that successfully integrates prolific distributed generation with end loads and efficiently reroutes power flows to balance supply and demand in real time with respect to stability, quality, and safety constraints. It relies on improved observability and advanced control techniques, and offers the possibility of advanced demand side management.In the context of the Smart Occitania project, which aims to study the feasibility of the smart grid concept for rural and suburban power distribution grids, this work proposes a model-based predictive control strategy based on flexible asset management (herein a biogas plant and a water tower) that aims to balance power supply and demand within the power grid while maintaining voltage levels within prescribed margins. The control scheme incorporates intraday forecasts of various stochastic quantities that impact the system, procured through Gaussian process regression.The main contribution of this thesis is twofold: the predictive controller's optimisation problem is formulated in such a way that the ON/OFF of the water tower is handled without recourse to mixed-integer nonlinear programming or relaxation, and the confidence intervals provided by the forecast module are utilised to minimize voltage overshooting due to forecasting errors.The results illustrate the promise of a predictive controller relying on renewable-energy-based flexible assets to reduce the gap between power supply and demand, while upholding the power grid's voltage constraints
Ismail, Ziad. "Stratégies de défense optimales pour améliorer la sécurité et la résilience des Smart Grids." Electronic Thesis or Diss., Paris, ENST, 2016. http://www.theses.fr/2016ENST0026.
The evolution of the threat landscape has made the security risk management in the smart grid a challenging task. This thesis addresses this problem and proposes solutions based on non-cooperative game theory, attack graphs and Constrained Markov Decision Processes (CMDPs). In the first part of this thesis, using the framework of non-cooperative game theory, we define and solve models to optimize the deployment of defense resources in the smart grid. We find the optimal choice of security modes to enable on each equipment in the Advanced Metering Infrastructure (AMI) to protect the confidentiality of customers’ data. In addition, we present an analytical model for identifying and hardening the most critical communication equipment used in the power system. In order to improve the security of industrial control systems, the defense strategy needs to be both proactive by anticipating potential targets of adversaries, and reactive by adjusting the type and strength of the response to the threat level. In the second part of this thesis, we address this challenge by presenting a solution that computes the optimal security policy that guarantees that the defender’s objectives are satisfied. This policy is obtained by solving a CMDP built using information in an attack graph generated beforehand that represents the evolution of the attacker’s state in the system
Banjar, nahor Kevin. "Micro-réseau résilient à haute stabilité dynamique en présence d’une intégration massive des énergies renouvelables variables." Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAT093.
This thesis deals with the stability issues introduced by the interconnection of massive renewables into an isolated microgrid. This research aims to identify the problems related to the topic, the indices to help understand the issues, and the strategy to enhance microgrid stability from the power system point of view.In the first part, a state of the art on the evolution of power stability is addressed. A short history of power system stability since its first identification and how it has evolved is firstly presented. This part also provides a literature review of the power system stability, including its classification, and how it has evolved due to two reasons: the microgrid concept and the trend towards the integration of more inverter-based generation. A review of the practical indices for grid stability assessment is also reported, including the ones that we propose. This part is also useful for analyzing the positioning of this PhD research.The second part of thesis presents the efforts to enhance the dynamic stability of microgrids characterized by massive renewable penetration. The main challenges and the current efforts are reviewed, which have shown that the current solutions focus on maintaining the philosophy of a classical power grid. With the advent of more intermittent energy, the current efforts have proven to be costly. Therefore, a new perspective is proposed. Here, the generating elements and the customers are exposed with higher deviations in voltage and frequency, which are necessary so that that the power equilibrium and the stability of the microgrid can be maintained. This perspective is suitable with the microgrid concept to realize the dream of universal electricity.The concept is then developed into a novel regulation strategy in which the system frequency and voltage are maintained in such a way to keep their ratio essentially constant around 1 (p.u. voltage to p.u. frequency). This strategy can potentially be implemented on all grid forming technologies. The benefits of employing this strategy include assurance that the electrical machinery is not harmed, plug-and-play feature, compatibility with current grid-tied inverter technologies, and no need for fast communication systems. Finally, this proposed strategy is easy to implement and does not require revolution in terms of power system equipment and control. This implementation of this concept provides a very valuable piece of flexibility: time, which enhances the resilience and stability of a microgrid. However, wider frequency and voltage deviations occur and have to be accepted by all the actors within the microgrid. A validation through computer simulations in Power Factory and real-time hardware in the loop experiments has been carried out with satisfactory results
Mallard, Kathleen. "Démarche de conception multicritère de système de production d'énergie : application à une hydrolienne durable et résiliente pour micro-réseau isolé." Thesis, Université Grenoble Alpes, 2020. http://www.theses.fr/2020GRALT035.
Everywhere, populations need energy to satisfy their needs and support their development. This work focuses on access to electrical energy in isolated areas that are too far from the main electricity grid to be connected to it. Among them, we select areas near a sea or river where hydrokinetic energy can be harnessed and transformed into electricity by a hydrokinetic turbine. The technological solutions available on the market only partially meet the specific needs of communities in these isolated areas. The objective of the thesis is twofold: to propose a multi-criteria design approach in order to imagine an energy production solution compatible with the challenges of sustainable development, and then to apply this approach to design a hydrokinetic turbine solution for isolated micro-grids that is sustainable and resilient. The design approach is based on the consideration of qualitative and quantitative criteria related to technical, economic, environmental and social sustainability from the upstream phases of the project. The proposed tool helps the designer to dialogue with the various stakeholders in order to target an electricity production solution that allows for human, economic, technical and community development that is both anchored in the territory and respectful of the environment. The application of the approach and the tool on the hydrokinetic turbine for isolated micro-grids leads to a sketch of the system and its components. We have been inspired by the low-tech philosophy that advocates simple, sustainable, resilient and accessible technologies. We sketched the characteristics of the turbine's electrical generator and then proposed a multi-physical analytical model and economic, environmental and cost analysis for an optimized pre-sizing. The machine is a squirrel-cage induction machine with a waterproof winding for open water cooling, a condenser bank for autonomous operation and an extended speed range. We have also studied the effects of the tooth-coiled winding on the asynchronous generator. Finally, we selected the Amazonian villages of French Guiana as a case study and in particular the CNRS research station of Nouragues. We apply the design approach and pre-size the generator with the available data with the objectives of maximizing the energy efficiency or minimizing the mass of the machine and the economic and environmental costs
Barthès, Marie-Lise. "Régénération d’ABS et de PC issus de DEEE sous forme d’alliages de polymères techniques ou de nanocomposites." Thesis, Bordeaux 1, 2010. http://www.theses.fr/2010BOR14007/document.
WEEE constitute a huge waste volume in which ABS is the major component. So, we focused on polymers from a real deposit (casing of computers); such a deposit contains ABS, PC, PS, ABS-PC. In a first step, recycling of aged ABS was studied. The decrease in the C=C content induces an impact strength drop. Nevertheless, ABS proved to be recyclable given that optimized processing conditions are found. The role of flame retardants was shown to be crucial on the recyclability. Separating polymers with or without flame retardants is the key point of the ABS recycling. However, recycled aged ABS do not recover the impact strength of neat virgin ABS. Then, ABS/PC blends were elaborated in order to obtain a material with an impact strength at least equivalent to the neat ABS. The use of ABS/PC blends for this recycling facilitates the sorting and the utilization of most of WEEE polymers. We first made ABS/PC blends from virgin polymers to have optimal processability and composition. Performing Charpy impact strength tests and morphological studies allowed to evaluate the influence of recycling process parameters (temperature and screw extrusion) and material properties (rate and viscosity of PC and ABS flame retardants). Experimental results indicate that the impact strength of the ABS/PC blends is higher when the morphology is fibrillar or co-continuous. We obtained ABS virgin FR/PC virgin blends (70/30) with an impact strength greater than the neat ABS. But, with equal composition, this result was not reached for the blends. So to achieve reliable blends rich in recycled ABS, compatibilisation is necessary. Recycled ABS/PC blends compatibilised with PP-g-MA is more resilient than the ABS. However, the compatibilising agents have a limited efficiency when they are used in the presence of flame retardants or subjected to a high residence time. Finally, nanoclays were attemptively used as both FR and compatibiliser. Tough they proved uneffective in the very first experiments carried out (the choice of clay need to be optimized)
Diallo, Ibrahima. "Évènements rares et gestion des actifs en contexte d'Hydro-Québec : prise de décision sous risque, incertitude et résilience." Thèse, 2020. http://depot-e.uqtr.ca/id/eprint/9669/1/eprint9669.pdf.