Дисертації з теми "Power system vulnerability"
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Yu, Xingbin. "Analyses of power system vulnerability and total transfer capability." Diss., Texas A&M University, 2005. http://hdl.handle.net/1969.1/3294.
Повний текст джерелаLiu, Xiaopeng. "Power system dynamic vulnerability under extreme transmission line contingencies." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=18782.
Повний текст джерелаLes réseaux électriques peuvent être sous la menace de conditions extrêmes, tels que désastres naturels et attentats terroristes. Pour déterminer la condition la plus sévère en état stationnaire, des méthodes systématiques utilisant des techniques d'optimisations ont été développées. Jusqu'à présent il n'existe cependant pas de méthodes systématiques pour déterminer quel défaut est le plus sévère en régime dynamique. Cette thèse propose une telle méthode. Elle utilise une approche en deux étapes, « triage et classement », similaire à celle utilisée dans une analyse de sécurité dynamique conventionnelle. Dans l'étape de triage, les lignes de transport d'électricité sont sélectionnées selon deux critères. Le premier est basé sur la sensibilité critique des valeurs propres par rapport à la perte d'une seule ligne. Une ligne de transport est sélectionnée seulement si une des valeurs propres critiques a une sensibilité élevée à la perte de cette ligne. Le second critère est basé sur une analyse topologique et recherche des ensembles de coupure dans le système. Une ligne de transport est sélectionnée si elle appartient à un ensemble de coupure avec un déséquilibre de puissance élevé. Dans l'étape de classement, une analyse temporelle est effectuée sur toutes les combinaisons possibles des lignes de transport sélectionnées dans la première étape, afin de déterminer leurs véritables impacts dynamiques sur le réseau électrique. Les relais de protection sont représentés. Les résultats des simulations sur le système test IEEE96 démontrent que l'étape de triage peut réduire le nombre de défauts de manière significative, ce qui peut alléger considérablement le fardeau de calcul dans l'étape de classement. Les défauts les plus sévères en termes de délestage étaient identifiés dans la plupart des cas par la méthode proposée. L'intérêt de la méthode réside dans sa simplicité,$
Holmgren, Åke J. "Quantitative vulnerability analysis of electric power networks." Doctoral thesis, KTH, Transporter och samhällsekonomi, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3969.
Повний текст джерелаQC 20100831
Buriticá, Jessica Ana Maria. "Seismic vulnerability assessment of power transmission networks : a system thinking approach." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/44169.
Повний текст джерелаWardman, John Blackburn. "Vulnerability of Electric Power Systems to Volcanic Ashfall Hazards." Thesis, University of Canterbury. Geological Sciences, 2013. http://hdl.handle.net/10092/8014.
Повний текст джерелаSetréus, Johan. "Identifying critical components for system reliability in power transmission systems." Doctoral thesis, KTH, Elektroteknisk teori och konstruktion, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-40389.
Повний текст джерелаQC 20110920
Wang, Zhuoyang. "Application of Complex Network Theory in Power System Security Assessment." Thesis, The University of Sydney, 2016. http://hdl.handle.net/2123/17367.
Повний текст джерелаAl-Jaberi, Mubarak. "The vulnerability of laser warning systems against guided weapons based on low power lasers." Thesis, Cranfield University, 2006. http://hdl.handle.net/1826/1047.
Повний текст джерелаKim, Mingoo. "Application of computational intelligence to power system vulnerability assessment and adaptive protection using high-speed communication /." Thesis, Connect to this title online; UW restricted, 2002. http://hdl.handle.net/1773/5855.
Повний текст джерелаElizondo, David C. "A Methodology to Assess and Rank the Effects of Hidden Failures in Protection Schemes based on Regions of Vulnerability and Index of Severity." Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/26902.
Повний текст джерелаPh. D.
Viljoen, Machiel. "'n Omvattende nasionale bestuursraamwerk vir kragstelselbelemmering deur aaneengeskakelde ontwrigting van kragontwikkeling in Suid-Afrika / Machiel Viljoen." Thesis, North-West University, 2012. http://hdl.handle.net/10394/9542.
Повний текст джерелаThesis (MIng (Electrical and Electronic Engineering))--North-West University, Potchefstroom Campus, 2013
Adachi, Takao. "Impact of cascading failures on performance assessment of civil infrastructure systems." Diss., Available online, Georgia Institute of Technology, 2007, 2007. http://etd.gatech.edu/theses/available/etd-03052007-095214/.
Повний текст джерелаBruce R. Ellingwood, Committee Chair ; Abdul-Hamid Zureick, Committee Member ; James I. Craig, Committee Member ; Reginald DesRoches, Committee Member ; Kenneth M. Will, Committee Member.
Stathakos, Dimitrios. "An enhanced graphical user interface for analyzing the vulnerability of electrical power systems to terrorist attacks." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Dec%5FStathakos.pdf.
Повний текст джерелаThesis advisor(s): Javier Salmeron, Kevin Wood. Includes bibliographical references (p. 101-102). Also available online.
Bessani, Michel. "Resilience and vulnerability of power distribution systems: approaches for dynamic features and extreme weather scenarios." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/18/18153/tde-11072018-165318/.
Повний текст джерелаNossa sociedade é altamente dependente de commodities, como água e eletricidade, fornecidas para os usuários por sistemas de engenharia, conhecidos como infraestruturas críticas. A compreensão de como tais sistemas lidam com eventos prejudiciais é uma preocupação atual de pesquisadores, agentes públicos e sociedade. A perda de desempenho de um sistema devido a danos é relacionada à sua vulnerabilidade, e a capacidade de absorver e se recuperar dos danos é a resiliência. Neste estudo, são apresentadas abordagens para avaliar a vulnerabilidade e resiliência de sistemas de distribuição de energia considerando características dinâmicas, como os processos de falha e reconfiguração do sistema, para a vulnerabilidade, e os efeitos de climas extremos na resiliência com os processos de falha e reparo. Tais abordagens foram aplicadas em sistemas previamente apresentados na literatura, e também em um sistema brasileiro. Simulação de Monte Carlo foi utilizada para avaliar as dinâmicas de falha e reparo do sistema utilizando de modelos obtidos a partir de dados históricos, e um método para usar os modelos de tempo-até-falha durante a análise de vulnerabilidade também foi apresentado. Além disso, uma avaliação do impacto da dinâmica de reconfiguração na vulnerabilidade foi realizada e uma avaliação de resiliência sob diferentes cenários climáticos foi desenvolvida. Os modelos tempo-para-falha e reparo destacaram como fatores externos modificam as dinâmicas de falha e reparo do sistema brasileiro, o uso de modelos de confiabilidade na análise de vulnerabilidades mostrou que a consideração dos diferentes tipos de elementos geram resultados diferentes e o domínio de tempo permite novas perspectivas de análise. A investigação da reconfiguração indicou que a redução da vulnerabilidade devido à reconfiguração é afetada pelo número de chaves e também pela máxima capacidade de carga dos alimentadores do sistema de distribuição. A avaliação de resiliência mostrou que, para conectividade estrutural, redes de distribuição maiores são menos resilientes, enquanto que para fornecimento de energia, um conjunto de características, relacionados com a organização topológica e elétrica dessas redes parece ser associado à resiliência do serviço, informação útil para o planejamento. As dinâmicas avaliadas neste estudo são relevantes para a vulnerabilidade e resiliência de tais sistemas, e também para outras infraestruturas críticas. Além disso, essas abordagens podem ser aplicadas a outros sistemas, como transporte e distribuição de água. Em estudos futuros, outras características de sistemas de distribuição de energia, como geração distribuída e armazenamento de energia, serão consideradas nas análises de vulnerabilidade e resiliência.
Ha, Dinh Truc. "Line outage vulnerabilities of power systems : models and indicators." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAT018/document.
Повний текст джерелаThe vulnerability of electrical systems is one of the problems related to their complexity. It has received increasing attention from researchers in recent decades. Despite this, the fundamental phenomena that govern the vulnerability of the system are still not well understood.Understanding how the vulnerability of power systems emerges from their complex organization is, therefore, the main motivation of the present work. It proposes the definition of a standard method to assess the vulnerability of power systems and identify their most critical elements. The method enables a better understanding of the links between the topology of the grid and the line outage vulnerabilities.The first part of this research work offers a critical review of literature approaches used to assess system vulnerability. The results provided by these approaches for four IEEE test systems are confronted to a reference contingency analysis using AC power flow calculations. From these analyses, pros and cons of each approach are outlined. An improved method for assessment of system vulnerability to line outages is defined from this confrontation. It is based on DC load flow and graph theory.The second part proposes a new approach based on spectral graph theory and solving of DC power flow to identify how system vulnerability and critical components emerge from the power network topology
Zhao, Long. "Novel Models and Algorithms for Uncertainty Management in Power Systems." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4971.
Повний текст джерелаCaudron, François. "Etude fondamentale des effets liés aux agressions micro-ondes de fortes puissances et du chaos sur l’électronique (composants, circuits et systèmes)." Thesis, Cergy-Pontoise, 2012. http://www.theses.fr/2012CERG0663.
Повний текст джерелаThe thesis focuses on the effects associated with HPM and Chaos aggressions on electronics. After a theoretical and experimental study of the electromagnetic coupling between two ports of 50 Ω impedance in a complex cavity, a new model based on Babinet principle is proposed to extend the study to the case of any radiation impedances. The impact of intentional EM attacks on the "front end" receiver circuits such as limiters at outside the antennas bandwidth was also studied and validated on several types of antennas for 2.45 GHz an X-band applications. The results show that for certain conditions, it is possible that EM aggression generates chaotic signals in the front end receivers. Finally, two chaotic sources have been studied and characterized. The opportunity to enhance their spectrum is also proposed
Oiveira, Clovis Bosco Mendon?a. "T?cnicas de simplifica??o de redes e otimiza??o multiobjetivo para an?lise de varia??es de tens?o em regime permanente provocadas por parques e?licos integrados ao sistema el?trico." Universidade Federal do Rio Grande do Norte, 2010. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15142.
Повний текст джерелаUniversidade Federal do Rio Grande do Norte
This study presents a description of the development model of a representation of simplified grid applied in hybrid load flow for calculation of the voltage variations in a steady-state caused by the wind farm on power system. Also, it proposes an optimal load-flow able to control power factor on connection bar and to minimize the loss. The analysis process on system, led by the wind producer, it has as base given technician supplied by the grid. So, the propose model to the simplification of the grid that allows the necessity of some knowledge only about the data referring the internal network, that is, the part of the network that interests in the analysis. In this way, it is intended to supply forms for the auxiliary in the systematization of the relations between the sector agents. The model for simplified network proposed identifies the internal network, external network and the buses of boulders from a study of vulnerability of the network, attributing them floating liquid powers attributing slack models. It was opted to apply the presented model in Newton-Raphson and a hybrid load flow, composed by The Gauss-Seidel method Zbarra and Summation Power. Finally, presents the results obtained to a developed computational environment of SCILAB and FORTRAN, with their respective analysis and conclusion, comparing them with the ANAREDE
Este trabalho apresenta uma descri??o do desenvolvimento de modelo para representa??o de rede simplificada aplicado em fluxo de carga h?brido para c?lculo das varia??es de tens?o em regime permanente provocadas pela conex?o de aerogeradores na rede el?trica. Al?m disso, se apresenta um fluxo de carga ?timo capaz de controlar remotamente o fator de pot?ncia na barra de conex?o e minimizar perdas. O princ?pio do processo de an?lise do sistema, conduzido pelo acessante, tem como base dados t?cnicos fornecidos pela rede acessada. Assim, se prop?e um modelo para simplifica??o de redes que permita a necessidade do conhecimento apenas dos dados referente a rede interna, ou seja, a parcela da rede de interesse para an?lise. Dessa forma, pretende-se fornecer meios para auxiliar na sistematiza??o das rela??es entre concession?ria e acessante. O modelo para simplifica??o de rede proposto identifica a rede interna, rede externa e as barras de fronteira a partir de dados provenientes de um estudo de vulnerabilidade da rede, atribuindo-as pot?ncias l?quidas flutuantes, ou seja, modelando-as como barras slack. Aplica-se o referido modelo no fluxo de carga Newton-Raphson e em um fluxo de carga h?brido, composto pelos m?todos de Gauss Seidel Zbarra e Soma de Pot?ncias. Ao final, apresentam-se os resultados obtidos por um ambiente computacional desenvolvido do SCILAB e FORTRAN, com suas respectivas an?lises e conclus?es, comparando-os com o ANAREDE
Martinez, Ivan Curtis, and 馬依凡. "Utilizing Energy Storage System to Improve Power System Vulnerability." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/31607641894693148123.
Повний текст джерела國立中山大學
電機工程學系研究所
100
In this thesis, security measures and vulnerability mitigation are mainly addressed. How to improve the system vulnerability is one of the main issues for power system operation and planning. Recent research revealed that Energy Storage Systems (ESSs) have a great potential to be used to improve system vulnerability. A vulnerability assessment is proposed in this thesis to identify the impact factors in the power systems due to generation outage and line outage. A Bus Impact Severity (BIS) analysis is then proposed and used to find the vulnerable buses in the system. The buses with the larger BIS value defined in this thesis are the better locations for ESSs placement. Formulations for optimal locations and capacities of ESSs placement are derived and then solved by Genetic Algorithm (GA). Test results show that the proposed method can be used to find the optimal locations and capacities for ESSs for system vulnerability improvement.
VESCIO, GIOVANNI. "Vulnerability and Reliability Assessment of Electrical Power System using Petri Nets." Doctoral thesis, 2012. http://hdl.handle.net/11573/916929.
Повний текст джерела"Consequences of False Data Injection on Power System State Estimation." Master's thesis, 2015. http://hdl.handle.net/2286/R.I.29808.
Повний текст джерелаDissertation/Thesis
Masters Thesis Electrical Engineering 2015
"Topology Attacks on Power System Operation and Consequences Analysis." Master's thesis, 2015. http://hdl.handle.net/2286/R.I.34855.
Повний текст джерелаDissertation/Thesis
Masters Thesis Electrical Engineering 2015
Pang, Chengzong. "Fast Detection and Mitigation of Cascading Outages in the Power System." Thesis, 2011. http://hdl.handle.net/1969.1/ETD-TAMU-2011-12-10514.
Повний текст джерелаDanese, Alessandro. "System-level functional and extra-functional characterization of SoCs through assertion mining." Doctoral thesis, 2018. http://hdl.handle.net/11562/979447.
Повний текст джерела