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Dissertations / Theses on the topic 'Power system failure'

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Published: 4 June 2025

Last updated: 15 July 2025

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1

Qiu, Qun. "Risk Assessment of Power System Catastrophic Failures and Hidden Failure Monitoring & Control System." Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/11075.

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One of the objectives of this study is to develop a methodology, together with a set of software programs that evaluate, in a power system, the risks of catastrophic failures caused by hidden failures in the hardware or software components of the protection system. The disturbance propagation mechanism is revealed by the analysis of the 1977 New York Blackout. The step-by-step process of estimating the relay hidden failure probability is presented. A Dynamic Event Tree for the risk-based analysis of system catastrophic failures is proposed. A reduced 179-bus WSCC sample system is studied and t

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2

Jürgensen, Jan Henning. "Condition-based Failure Rate Modelling for Individual Components in the Power System." Licentiate thesis, KTH, Elektroteknisk teori och konstruktion, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-187701.

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The electrical power grid is one of the most important infrastructures in the modernsociety. It supplies industrial and private customers with electricity and supportsother critical infrastructures such as the water supply. Thus, it is significant that the power grid is a reliable system. However, the power system experiences a hugetransition from classical production methods such as coal and nuclear power plantsto distributed renewable energy forms such as wind energy and photovoltaic. This change to a more distributed system challenges the existing power grid as well as the traditional busin

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3

Kross, Cory Kenneth. "A Method for Evaluating Aircraft Electric Power System Sizing and Failure Resiliency." DigitalCommons@CalPoly, 2017. https://digitalcommons.calpoly.edu/theses/1709.

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With the More Electric Aircraft paradigm, commercial commuter aircraft are increasing the size and complexity of electrical power systems by increasing the number of electrical loads. With this increase in complexity comes a need to analyze electrical power systems using new tools. The Hybrid Power System Optimizer (HyPSO) developed by Airbus SAS is a simulator designed to analyze new aircraft power systems. This thesis project will first provide a method to assess the reliability of complex aircraft electrical power systems before and after failure and reconfiguration events. Next, an add-on

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4

Starr, Fred. "The development of an expert system for failure analysis of power plant components." Thesis, University of Surrey, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.441722.

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5

Chen, Quan. "Risk Management of Cascading Failure in Composite Reliability of a Deregulated Power System with Microgrids." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/52980.

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Due to power system deregulations, transmission expansion not keeping up with the load growth, and higher frequency of natural hazards resulting from climate change, major blackouts are becoming more frequent and are spreading over larger regions, entailing higher losses and costs to the economy and the society of many countries in the world. Large-scale blackouts typically result from cascading failure originating from a local event, as typified by the 2003 U.S.-Canada blackout. Their mitigation in power system planning calls for the development of methods and algorithms that assess the risk

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6

SILVA, AUCYONE A. da. "An integrated approach for plant monitoring and diagnosis using multiresolution wavelet analysis." reponame:Repositório Institucional do IPEN, 1997. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11643.

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Made available in DSpace on 2014-10-09T12:54:15Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:09:13Z (GMT). No. of bitstreams: 1 12438.pdf: 5594991 bytes, checksum: f79284c9b5ba64cbc05b0ee1eb78ef64 (MD5)<br>Tese (Doutoramento)<br>IPEN/T<br>The University of Tennessee

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7

Trayhorn, Benjamin. "Power plant system reliability analysis : applications to insurance risk selection and pricing." Thesis, Cranfield University, 2012. http://dspace.lib.cranfield.ac.uk/handle/1826/7906.

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Within the Speciality Engineering Insurance Field the use of engineering opinion is the main component in risk analysis for underwriting decision making. The use of risk analysis tools to quantify the risk associated with perils such as mechanical breakdown is limited. A reliability model for the risk analysis of mechanical breakdown risk for the power generation sector, PowerRAT, has been developed and its performance evaluated against historic claim data. It has proven to closely forecast actual losses over a portfolio of power plants, and differentiate between power plant type; conventional

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8

Awadallah, Selma Khalid Elhaj. "Probabilistic methodology for prioritising replacement of ageing power transformers based on reliability assessment of transmission system." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/probabilistic-methodology-for-prioritising-replacement-of-ageing-power-transformers-based-on-reliability-assessment-of-transmission-system(01b6ce0b-9198-4b3c-b825-f40365044659).html.

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Customers expect electricity to be not only available but also affordable whenever they need it. Due to the stochastic nature of power system component failure, the management of power interruption is challenging. Although the reliability of supply can usually be increased by employing redundant equipment; this means that affordability is compromised. At present, many power utilities have a considerable amount of aged equipment in their networks. Although they have already started replacement planning, the price control schemes imposed by regulatory authorities constrain their capital expendit

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9

Cheng, Danling. "Integrated System Model Reliability Evaluation and Prediction for Electrical Power Systems: Graph Trace Analysis Based Solutions." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/28944.

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A new approach to the evaluation of the reliability of electrical systems is presented. In this approach a Graph Trace Analysis based approach is applied to integrated system models and reliability analysis. The analysis zones are extended from the traditional power system functional zones. The systems are modeled using containers with iterators, where the iterators manage graph edges and are used to process through the topology of the graph. The analysis provides a means of computationally handling dependent outages and cascading failures. The effects of adverse weather, time-varying loads,

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10

BUENO, ELAINE I. "Group Method of Data Handling (GMDH) e redes neurais na monitoração e detecção de falhas em sensores de centrais nucleares." reponame:Repositório Institucional do IPEN, 2011. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9982.

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Made available in DSpace on 2014-10-09T12:33:30Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:05:40Z (GMT). No. of bitstreams: 0<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energéticas e Nucleares - IPEN-CNEN/SP

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Muhammad, Ridzuan Mohd Ikhwan Bin. "Reliability assessment of distribution networks incorporating regulator requirements, generic network equivalents and smart grid functionalities." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/29009.

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Over the past decades, the concepts and methods for reliability assessment have evolved from analysing the ability of individual components to operate without faults and as intended during their lifetime, into the comprehensive approaches for evaluating various engineering strategies for system planning, operation and maintenance studies. The conventional reliability assessment procedures now receive different perspectives in different engineering applications and this thesis aims to improve existing approaches by incorporating in the analysis: a) a more detailed and accurate models of LV and

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Miller, Daniel Paul. "Maintaining the Atom: U.S. Nuclear Power Plant Life and the 80-Year Maintenance Regulation Regime." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/96561.

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Large, ever more complex, technological systems surround us and provide products and services that both construct and define much of what we consider as modern society. Our societal bargain is the trade-off between the benefits of our technologies and our constant vigilance over the safe workings and the occasional failures of these often hazardous sociotechnical systems during their operating life. Failure of a system's infrastructure, whether a complex subsystem or a single component, can cause planes to crash, oil rigs to burn, or the release of radioactivity from a nuclear power plant. To

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13

Huang, Song. "Enhancing Storage Dependability and Computing Energy Efficiency for Large-Scale High Performance Computing Systems." Thesis, University of North Texas, 2019. https://digital.library.unt.edu/ark:/67531/metadc1505142/.

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With the advent of information explosion age, larger capacity disk drives are used to store data and powerful devices are used to process big data. As the scale and complexity of computer systems increase, we expect these systems to provide dependable and energy-efficient services and computation. Although hard drives are reliable in general, they are the most commonly replaced hardware components. Disk failures cause data corruption and even data loss, which can significantly affect system performance and financial losses. In this dissertation research, I analyze different manifestations of d

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14

Alghassi, Alireza. "Prognostics and health management of power electronics." Thesis, Cranfield University, 2016. http://dspace.lib.cranfield.ac.uk/handle/1826/10968.

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Prognostics and health management (PHM) is a major tool enabling systems to evaluate their reliability in real-time operation. Despite ground-breaking advances in most engineering and scientific disciplines during the past decades, reliability engineering has not seen significant breakthroughs or noticeable advances. Therefore, self-awareness of the embedded system is also often required in the sense that the system should be able to assess its own health state and failure records, and those of its main components, and take action appropriately. This thesis presents a radically new prognostics

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15

Andreev, Maxim, Artem Kolesnikov, Uwe Grätz, and Julia Gundermann. "Simulation-based system reliability analysis of electrohydraulic actuator with dual modular redundancy." Technische Universität Dresden, 2020. https://tud.qucosa.de/id/qucosa%3A71268.

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This paper describes the failure detection system of an electro-hydraulic actuator with dual modular redundancy based on a hybrid twin TM concept. Hybrid twin TM is a combination of virtual twin that operates in parallel with the actuator and represents its ideal behaviour, and a digital twin that identifies possible failures using the sensor readings residuals. Simulation-based system reliability analysis helps to generate a dataset for training the digital twin using machine learning algorithms. A systematic failure detection approach based on decision trees and the process of analysing the

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16

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/.

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Thesis (Ph. D.)--Civil and Environmental Engineering, Georgia Institute of Technology, 2007.<br>Bruce R. Ellingwood, Committee Chair ; Abdul-Hamid Zureick, Committee Member ; James I. Craig, Committee Member ; Reginald DesRoches, Committee Member ; Kenneth M. Will, Committee Member.

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Meadowcroft, Brian K. "Hidden Failures in Shipboard Electrical Integrated Propulsion Plants." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/42754.

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The differences between shipboard and land based power systems are explored to support the main focus of this work. A model was developed for simulating hidden failures on shipboard integrated propulsion plants, IPP. The model was then used to evaluate the segregation of the IPP high voltage, HV, buses in a similar fashion as a shipboard firemain. The HV buses were segregated when loss of propulsion power would put the ship as risk. This new treatment reduces the region of vulnerability by providing a high impedance boundary that limits the effects of a hidden failure of a current magnitude or

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18

Schneider, Kevin Paul. "Analysis of critical infrastructure interactions /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/5990.

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19

Wu, Qiang. "Tap changing dynamic modeling and its effects on power system voltage behavior." Thesis, The University of Sydney, 1998. https://hdl.handle.net/2123/27640.

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This thesis presents research results on the effects of tap changing dynamic modeling on power system mid-to-long term voltage behavior. The modeling of tap changing dynamics in voltage stability studies is first addressed. The dynamic operation of an on-load-tap—changing transformer is represented by a highly nonlinear, discrete and time—delay embedded model, which is suitable to mid-to—long term voltage stability studies. Different discrete tap models and their continuous approximations with respect to time and tap position are introduced. The initial emphasis is on studying the i

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20

Wu, Qiang. "Dynamics and coordinated control of voltage behavior in power systems." Thesis, The University of Sydney, 2000. https://hdl.handle.net/2123/27766.

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This thesis presents results on the dynamics and coordinated control of voltage behavior in power systems. The first part of the thesis is on dynamic modeling, with emphasis on tap-changing transformers and load dynamics. For both, highly simplified models are used in voltage stability analysis, despite the complex nature of the devices involved, i.e. tap changing operation and aggregate load. The operating conditions, under which the stability results based on these simplified models are reliable need to be clarified. A study is carried out on the influence of diiferent discrete and

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21

Chayanam, Kavitha. "Analysis of Telecommunications Outages Due to Power Loss." Ohio University / OhioLINK, 2005. http://www.ohiolink.edu/etd/view.cgi?ohiou1125024491.

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22

Elizondo, de la Garza David C. "Hidden Failures in Protection Systems and its Impact on Power System Wide-area Disturbances." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/31890.

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This document explores Hidden Failures in protection systems, which have been identified as key contributors in the degradation of Power System wide-area disturbances. The Hidden Failure Modes in which the protection systems may fail to operate correctly and their consequences are identified in a theoretical approach. This theoretical side has its practical counterpart since a number of Hidden Failure Modes are found in real wide-area disturbances. The original definition of Hidden Failure, which is a failure that remains undetected and is uncovered by another system event, is included as well

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23

Mao, Yiming Mui Karen. "Protection system design for power distribution systems in the presence of distributed generation /." Philadelphia, Pa. : Drexel University, 2005. http://dspace.library.drexel.edu/handle/1860/501.

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24

Rezaei, Pooya. "Cascading Failure Risk Estimation and Mitigation in Power Systems." ScholarWorks @ UVM, 2016. http://scholarworks.uvm.edu/graddis/482.

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Electricity is a critical component in our daily life. Because it is almost always available, we take it for granted. However, given the proper conditions, blackouts do happen every once in a while and can cause discomfort at a minimum, and a catastrophe in rare circumstances. The largest blackouts typically include cascading failures, which are sequences of interdependent outages. Although timely and effective operator intervention can often prevent a cascade from spreading, such interventions require ample situational awareness. The goals of this dissertation are twofold: to provide power sy

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25

Hunt, Richard K. "Hidden Failure in Protective Relays: Supervision and Control." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36571.

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This thesis performs simulations of a relay supervisory system (RSS) that works passively in conjunction with the existing protective relaying system at a substation. During normal system operating conditions, the RSS supervises the relay system to prevent trips due to hidden failures. During wide area network disturbances, it adapts the relay system to increase security of the power system. The RSS works passively in the sense that it waits for events to occur in the existing relay system before taking any action. The simulation performed includes a model of the RSS, along with simplified

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26

Zhong, Jian Hua. "Intelligent system based facility monitoring and fault diagnosis of power generators." Thesis, University of Macau, 2011. http://umaclib3.umac.mo/record=b2550655.

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27

Bretas, Arturo Suman. "Robust Electric Power Infrastructures. Response and Recovery during Catastrophic Failures." Diss., Virginia Tech, 2001. http://hdl.handle.net/10919/29931.

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This dissertation is a systematic study of artificial neural networks (ANN) applications in power system restoration (PSR). PSR is based on available generation and load to be restored analysis. A literature review showed that the conventional PSR methods, i.e. the pre-established guidelines, the expert systems method, the mathematical programming method and the petri-net method have limitations such as the necessary time to obtain the PSR plan. ANN may help to solve this problem presenting a reliable PSR plan in a smaller time. Based on actual and past experiences, a PSR engine based on ANN

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Tamronglak, Surachet. "Analysis of power system disturbances due to relay hidden failures." Diss., Virginia Tech, 1994. http://hdl.handle.net/10919/39136.

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This research analyzes the linkage between power system disturbances and failures in relaying systems. The annual disturbance reports prepared by the North American Electric Reliability Council were examined. It has been found that relaying system failures plays very important role in power system cascading outages. The type of relaying system failures that are the most troublesome are the ones that have a potential to remain hidden until being exposed by some abnormal power system states to trigger relay misoperations. Each commonly used relaying scheme in transmission system is examin

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Abukar, Ghassan. "SYSTEM INFLUENCE FRAMEWORK: IT PROJECT MANAGERS’ INFLUENCE TO FORM CRITICAL STAKEHOLDER ALIGNMENTS AND PROMOTE VALUE REALIZATION." Case Western Reserve University School of Graduate Studies / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case1626795218031468.

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30

Oka, Ashok A. "Reliability and restoration algorithms for electrical distribution systems." Diss., This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-08232007-111001/.

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Leelaruji, Rujiroj. "Coordination of protection system and VSC-HVDC to mitigate cascading failures." Licentiate thesis, KTH, Electric Power Systems, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-13062.

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<p>The rapid development of the global economics has made power systems allover the world become large-scale interconnected grids. This increases the capabilityof power grids to transfer power over the long distance to serve the desiredpower demand with the minimum cost of operation. Unfortunately, it alsoenables the propagation of local failures into global networks. In other words,if a blackout happens in a power system, the size and the damage may significantlyincrease.</p><p>One of the main ways in which blackouts become widespread is cascadingfailures. This type of failure originates afte

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Das, Arindam Kumar. "Minimum power broadcast and maximization of time-to-first-failure in broadcast wireless networks /." Thesis, Connect to this title online; UW restricted, 2003. http://hdl.handle.net/1773/5912.

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Andreasson, Martin. "Correlated Failures of Power Systems: Analysis of the Nordic Grid." Thesis, KTH, Reglerteknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-55844.

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The emphasis of this master's thesis is modeling and simulation of failures in large-scale power grids. The linear DC-model governing the active power 　ows is derived and discussed, and the optimal load shedding problem is introduced. Using Monte Carlo simulations, we have analyzed the eects of correlations between failures of power lines on the total system load shed. Correlations are introduced by a Bernoulli failure model with its rst two ordinary moments given explicitly. The total system load shed is determined by solving the optimal load shedding problem in a MATLAB environment using YAL

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Evans, Helen. "Politics, coercion and power : an analysis of economic failure in healthcare systems." Thesis, Brunel University, 2006. http://bura.brunel.ac.uk/handle/2438/5478.

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This study examines notions of government and market failure in British healthcare by tracking and analysing the changing views of opinion formers. Presenting original data that highlights the attitudes of today's opinion formers towards populist notions in health economics it provides a unique insight into the limits and boundaries of contemporary debate. Significantly, the research concludes that swathes of elite opinion no longer support the National Health Service (NHS) in its traditional nationalised guise. While opinion formers instead now believe in a much greater plurality of public an

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Yu, Xuebei. "Distribution system reliability enhancement." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41091.

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Practically all everyday life tasks from economic transactions to entertainment depend on the availability of electricity. Some customers have come to expect a higher level of power quality and availability from their electric utility. Federal and state standards are now mandated for power service quality and utilities may be penalized if the number of interruptions exceeds the mandated standards. In order to meet the requirement for safety, reliability and quality of supply in distribution system, adaptive relaying and optimal network reconfiguration are proposed. By optimizing the system to

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Dong, Zhao Yang. "Advanced methods for small signal stability analysis and control in modern power systems." Phd thesis, School of Electrical and Information Engineering, Graduate School of Engineering, 1998. http://hdl.handle.net/2123/6416.

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Venganti, Thirupathi. "Outage management via powerline communication based automated meter reading systems." Master's thesis, Mississippi State : Mississippi State University, 2004. http://library.msstate.edu/etd/show.asp?etd=etd-12162003-144004.

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Nourbakhsh, Ghavameddin. "Reliability analysis and economic equipment replacement appraisal for substation and sub-transmission systems with explicit inclusion of non-repairable failures." Thesis, Queensland University of Technology, 2011. https://eprints.qut.edu.au/40848/1/Ghavameddin_Nourbakhsh_Thesis.pdf.

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The modern society has come to expect the electrical energy on demand, while many of the facilities in power systems are aging beyond repair and maintenance. The risk of failure is increasing with the aging equipments and can pose serious consequences for continuity of electricity supply. As the equipments used in high voltage power networks are very expensive, economically it may not be feasible to purchase and store spares in a warehouse for extended periods of time. On the other hand, there is normally a significant time before receiving equipment once it is ordered. This situation has crea

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Лістовщик, Леонід Костянтинович, Леонид Константинович Листовщик та L. Listovshchyk. "Обґрунтування параметрів двобойкового відбійного гідромолотка для руйнування гірських порід". Thesis, Видавництво НГУ, 2011. http://ir.nmu.org.ua/handle/123456789/150.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.05.06 – гірничі машини. Державний вищий навчальний заклад «Національний гірничий університет» МОНМС України, Дніпропетровськ, 2011.<br>Диссертация на соискание ученой степени кандидата технических наук по специальности 05.05.06 – горные машины. Государственное высшее учебное заведение «Национальный горный университет» МОНМС Украины, Днепропетровск, 2011.<br>Thesis for competition on candidate of engineering sciences degree on specialty 05.05.06 – mining machines. State Нigher Educational Institution «National

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Těžký, Jiří. "Vyhodnocení nákladů na penalizace v zadané distribuční síti." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217618.

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Energy system is important for classification of flation of developing countries. Function of energy system is supply electric power of high quality for every customers in system. Requirements of quality are different for individual countries. Reliability of electricity sector system is important parameter in every electricity systems. At the present time are the requirements of quality much higher, because of condition of liberalized market. Each country have different systems of standards of classification of reliability. Penalizations are assign to, when the systems of standards are overrun

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Chan, Chi-yiu, and 陳志銚. "The application of insurance theory to power system operating reserve market." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B3124399X.

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Athari, Mir Hadi. "Modeling Cascading Failures in Power Systems in the Presence of Uncertain Wind Generation." VCU Scholars Compass, 2019. https://scholarscompass.vcu.edu/etd/5936.

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One of the biggest threats to the power systems as critical infrastructures is large-scale blackouts resulting from cascading failures (CF) in the grid. The ongoing shift in energy portfolio due to ever-increasing penetration of renewable energy sources (RES) may drive the electric grid closer to its operational limits and introduce a large amount of uncertainty coming from their stochastic nature. One worrisome change is the increase in CFs. The CF simulation models in the literature do not allow consideration of RES penetration in studying the grid vulnerability. In this dissertation, we hav

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You, Ruhua. "Controller design for PSS and FACTS devices to enhance damping of low-frequency power oscillations in power systems." Diss., Montana State University, 2006. http://etd.lib.montana.edu/etd/2006/you/YouR0506.pdf.

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Henneaux, Pierre. "A two-level Probabilistic Risk Assessment of cascading failures leading to blackout in transmission power systems." Doctoral thesis, Universite Libre de Bruxelles, 2013. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209433.

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In our society, private and industrial activities increasingly rest on the implicit assumption that electricity is available at any time and at an affordable price. Even if operational data and feedback from the electrical sector is very positive, a residual risk of blackout or undesired load shedding in critical zones remains. The occurrence of such a situation is likely to entail major direct and indirect economical consequences, as observed in recent blackouts. Assessing this residual risk and identifying scenarios likely to lead to these feared situations is crucial to control and optimall

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Lindquist, Tommie. "On reliability modelling of ageing equipment in electric power systems with regard to the effect of maintenance." Licentiate thesis, Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-273.

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Nduku, Nyaniso Prudent. "Development of methods for distribution network power quality variation monitoring." Thesis, Cape Peninsula University of Technology, 2009. http://hdl.handle.net/20.500.11838/1144.

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Thesis (MTech (Electrical Engineering))--Cape Peninsula University of Technology, 2009<br>The purpose of this project is to develop methods for distribution network power quality' variations monitoring. Power quality (PO) has become a significant issue for both power suppliers and customers. There have been important changes in power system regarding to power quality requirements. "Power quality" is the combination at voltage quality and current quality. The main research problem of the project is to investigate the power quality of a distribution network by selection of proper measuremen

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Popescu, George. "Digital Signal Processing Methods for Safety Systems Employed in Nuclear Power Industry." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1479815935917872.

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Mogla, Sankalp. "Telecommunication Network Survivability for Improved Reliability in Smart power Grids." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5380.

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Power transmission grid infrastructures deliver electricity across large distance and are vital to the functioning of modern society. Increasingly these setups embody highly-coupled cyber-physical systems where advanced telecommunications networks are used to send status and control information to operate power transmission grid components, i.e., "smart grids". However, due to the high inter-dependency between the communication and power grid network layers, failure events can lead to further loss of control of key grid components, i.e., even if they are undamaged. In turn, such dependencies c

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Farantatos, Evangelos. "A predictive out-of-step protection scheme based on PMU enabled distributed dynamic state estimation." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45863.

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Recent widespread blackouts have indicated the need for more efficient and accurate power system monitoring, control and protection tools. Power system state estimation, which is the major tool that is used nowadays for providing the real-time model of the system, has significant biases resulting mainly from the complexity and geographic spread and separation of an electric power system. Synchrophasor technology is a promising technology that has numerous advantages compared to conventional metering devices. PMUs provide synchronized measurements, where synchronization is achieved via a GPS c

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Warne, Leoni Computer Science Australian Defence Force Academy UNSW. "Power and politics in information systems : a new model of conflict and a challenge for project managers." Awarded by:University of New South Wales - Australian Defence Force Academy. School of Computer Science, 1997. http://handle.unsw.edu.au/1959.4/38703.

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The purpose of this research study is to investigate and identify the impact of conflict on the success of information systems development. While specific hypotheses and research propositions are tested and investigated, the broader objectives of the study are to: explore the nature of conflict in an information system development and the extent to which conflict may be perceived to impact on the successful progress of a project; to determine which type of conflict may pose the most risk to an information systems development; and to determine to what extent conflict can be said to be contribut

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