Relevant bibliographies by topics / Fault analysis/power systems

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Fault analysis/power systems'

Author: Grafiati
Published: 4 June 2021
Last updated: 3 February 2022

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Journal articles on the topic "Fault analysis/power systems"

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Tiwari, Ravi Kumar, Nidhi Singh, Ambarish Kumar, and D. Suresh Babu. "Analysis of Symmetrical Fault with Fault Impedance in Power System." Global Journal For Research Analysis 2, no. 1 (June 15, 2012): 64–66. http://dx.doi.org/10.15373/22778160/january2013/63.

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Guo, Xiaoxiao, Yanghong Tan, and Feng Wang. "Modeling and Fault Propagation Analysis of Cyber–Physical Power System." Energies 13, no. 3 (January 22, 2020): 539. http://dx.doi.org/10.3390/en13030539.

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In cyber–physical power systems (CPPSs), the interaction mechanisms between physical systems and cyber systems are becoming more and more complicated. Their deep integration has brought new unstable factors to the system. Faults or attacks may cause a chain reaction, such as control failure, state deterioration, or even outage, which seriously threatens the safe and stable operation of power grids. In this paper, given the interaction mechanisms, we propose an interdependent model of CPPS, based on a characteristic association method. Utilizing this model, we can study the fault propagation mechanisms when faulty or under cyber-attack. Simulation results quantitatively reveal the propagation process of fault risks and the impacts on the CPPS due to the change of state quantity of the system model.
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Amanze, Fortune Chukwuebuka, and Amanze Destiny Josiah. "Fault analysis in power system using power systems computer aided design." International Journal of Advances in Applied Sciences 9, no. 3 (September 1, 2020): 171. http://dx.doi.org/10.11591/ijaas.v9.i3.pp171-179.

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<span>This work presents a fault analysis simulation model of an IEEE 30 bus system in a distribution network. This work annalysed the effect of fault current and fault voltage in a distribution system. A circuit breaker was introduced into the system to neutralize the effect of the fault. The system was run on a PSCAD software and results were obtained. The system was monitored based on the start time and the end time of the fault and how well the circuit breaker reacts with those times. Fault occurred from 0.100 to 0.300 seconds before it was removed. At the time fault was not applied (i.e. from 0.00 to 0.100 and from 0.300 to 0.72), the circuit breaker was close and became open when fault was applied so as to cut off current flow through the line.The result obtained gave the disruption caused by the fault and the quick response of the circuit breaker in neutralizing it. Results gotten are based on when the circuit breaker is close and no fault is applied and when the circuit breaker is open due to fault. From this work, it was obtained that circuit breakers are very essential in system protection and reliability.</span>
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Djibo, Marounfa `., Paul Moses, and Ike Flory. "Fault Protection Considerations for MVDC Shipboard Power Systems Operating with Pulsed-Power Loads." WSEAS TRANSACTIONS ON POWER SYSTEMS 16 (August 2, 2021): 139–48. http://dx.doi.org/10.37394/232016.2021.16.14.

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Medium Voltage Direct Current (MVDC) power distribution architectures are of immense interest for various shipboard power applications due to their advantages over classical MVAC distribution systems with respect to power quality, power density, and efficiency. However, MVDC are far away from maturity when compared to MVAC with respect to fault detection and isolation. Currently, there are no standards available for applying MVDC protection systems in shipboard applications. Furthermore, due to the absence of zero crossings in DC waveforms and unique transient fault signatures, it is challenging to design effective protection system schemes to isolate faults via conventional protection systems. This paper investigates and analyses various types of shipboard MVDC dynamic fault behaviours and signatures under different DC bus disturbances such as: bus to ground, bus to bus to ground, and impact of Pulsed-Power Load (PPL) with and without faults on a shipboard MVDC distribution system. Furthermore, a communication-based fault detection and isolation system controller that improves upon a directional ac overcurrent relay protection system is proposed offering additional protection discrimination between faults and PPLs in MVDC systems. To validate the effectiveness of the proposed protection controller, different bus current disturbances are simulated within a time-domain electromagnetic transient simulation of a shipboard power system including a PPL system operating with different ramp rate profiles, pulse widths, peak powers, and fault locations
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Gururajapathy, Sophi Shilpa, Hazlie Mokhlis, and Hazlee Azil Illias. "Fault location using mathematical analysis and database approach." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 38, no. 1 (January 7, 2019): 415–30. http://dx.doi.org/10.1108/compel-02-2018-0077.

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PurposeThe purpose of this paper is to identify faults in distribution systems which are unavoidable because of adverse weather conditions and unexpected accidents. Hence, quick fault location is vital for continuous power supply. However, most fault location methods depend on the stored database for locating fault. The database is created by simulation, which is time consuming. Therefore, in this work, a comprehensive fault location method to detect faulty section and fault distance from one-ended bus using limited simulated data is proposed.Design/methodology/approachThe work uses voltage sag data measured at a primary substation. Support vector machine estimates the data which are not simulated. The possible faulty section is determined using matching approach and fault distance using mathematical analysis.FindingsThis work proposed a ranking analysis for multiple possible faulty sections, and the fault distance is calculated using Euclidean distance approach.Practical implicationsThe research work uses Malaysian distribution system as it represents a practical distribution system with multiple branches and limited measurement at primary substation. The work requires only metering devices to identify fault which is cost effective. In addition, the distribution system is simulated using real-time PSCAD by which the capability of proposed method can be fully tested.Originality/valueThe paper presents a new method for fault analysis. It reduces simulation time and storage space of database. The work identifies faulty section and ranks the prior faulty section. It also identifies fault distance using a mathematical approach.
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Lu, Cheng, Xi Lin Zhang, Biao Long Su, and Yi Jun Wang. "Simulation of Fault Treatment Performance for Distribution Automation Systems and Key Technologies of Training Systems." Advanced Materials Research 1092-1093 (March 2015): 345–51. http://dx.doi.org/10.4028/www.scientific.net/amr.1092-1093.345.

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The simulation of fault treatment performance for distribution automation systems and the key technologies of training systems are discussed in this paper, which include key technologies for basic platform, auxiliary decision-making analysis for grid faults, load-transfer analysis for power system operating mode, loop closing analysis for power system operating mode and distribution network training simulation and so on. The results of simulation of fault treatment performance for distribution automation systems and training systems operation show a good accuracy and effectiveness of the method.
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Parzinger, Michael, Lucia Hanfstaengl, Ferdinand Sigg, Uli Spindler, Ulrich Wellisch, and Markus Wirnsberger. "Residual Analysis of Predictive Modelling Data for Automated Fault Detection in Building’s Heating, Ventilation and Air Conditioning Systems." Sustainability 12, no. 17 (August 20, 2020): 6758. http://dx.doi.org/10.3390/su12176758.

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Faults in Heating, Ventilation and Air Conditioning (HVAC) systems affect the energy efficiency of buildings. To date, there rarely exist methods to detect and diagnose faults during the operation of buildings that are both cost-effective and sufficient accurate. This study presents a method that uses artificial intelligence to automate the detection of faults in HVAC systems. The automated fault detection is based on a residual analysis of the predicted total heating power and the actual total heating power using an algorithm that aims to find an optimal decision rule for the determination of faults. The data for this study was provided by a detailed simulation of a residential case study house. A machine learning model and an ARX model predict the building operation. The model for fault detection is trained on a fault-free data set and then tested with a faulty operation. The algorithm for an optimal decision rule uses various statistical tests of residual properties such as the Sign Test, the Turning Point Test, the Box-Pierce Test and the Bartels-Rank Test. The results show that it is possible to predict faults for both known faults and unknown faults. The challenge is to find the optimal algorithm to determine the best decision rules. In the outlook of this study, further methods are presented that aim to solve this challenge.
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WANG, C., and Y. ZHANG. "Fault Correspondence Analysis in Complex Electric Power Systems." Advances in Electrical and Computer Engineering 15, no. 1 (2015): 11–16. http://dx.doi.org/10.4316/aece.2015.01002.

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Xiu, Wanjing, and Yuan Liao. "Fault-location Observability Analysis on Power Distribution Systems." Electric Power Components and Systems 42, no. 16 (November 3, 2014): 1862–71. http://dx.doi.org/10.1080/15325008.2014.956953.

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Zhu Yongli, Y. H. Yang, B. W. Hogg, W. Q. Zhang, and S. Gao. "An expert system for power systems fault analysis." IEEE Transactions on Power Systems 9, no. 1 (1994): 503–9. http://dx.doi.org/10.1109/59.317573.

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Dissertations / Theses on the topic "Fault analysis/power systems"

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Yang, Jin. "Fault analysis and protection for wind power generation systems." Thesis, University of Glasgow, 2011. http://theses.gla.ac.uk/2420/.

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Wind power is growing rapidly around the world as a means of dealing with the world energy shortage and associated environmental problems. Ambitious plans concerning renewable energy applications around European countries require a reliable yet economic system to generate, collect and transmit electrical power from renewable resources. In populous Europe, collective offshore large-scale wind farms are efficient and have the potential to reach this sustainable goal. This means that an even more reliable collection and transmission system is sought. However, this relatively new area of offshore wind power generation lacks systematic fault transient analysis and operational experience to enhance further development. At the same time, appropriate fault protection schemes are required. This thesis focuses on the analysis of fault conditions and investigates effective fault ride-through and protection schemes in the electrical systems of wind farms, for both small-scale land and large-scale offshore systems. Two variable-speed generation systems are considered: doubly-fed induction generators (DFIGs) and permanent magnet synchronous generators (PMSGs) because of their popularity nowadays for wind turbines scaling to several-MW systems. The main content of the thesis is as follows. The protection issues of DFIGs are discussed, with a novel protection scheme proposed. Then the analysis of protection scheme options for the fully rated converter, direct-driven PMSGs are examined and performed with simulation comparisons. Further, the protection schemes for wind farm collection and transmission systems are studied in terms of voltage level, collection level  wind farm collection grids and high-voltage transmission systems for multi-terminal DC connected transmission systems, the so-called “Supergrid”. Throughout the thesis, theoretical analyses of fault transient performances are detailed with PSCAD/EMTDC simulation results for verification. Finally, the economic aspect for possible redundant design of wind farm electrical systems is investigated based on operational and economic statistics from an example wind farm project.
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Ahmed, Sara Mohamed. "Computer Modeling and Simulation of Power Electronics Systems for Stability Analysis." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/31026.

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This works focuses on analyzing ac/dc hybrid power systems with large number of power converters that can be used for a variety of applications. A computer model of a sample power system is developed. The system consists of various detailed/switching models that are connected together to study the sample system dynamic behavior and to set conditions for safe operation. The stability analysis of this type of power systems has been approached using time domain simulations. There are three types of stability analysis that are studied: steady-state, small-signal analysis and large signal analysis. The steady-state stability analysis is done by investigating the nominal operation of the power electronics system proposed. The small-signal stability of this system is studied by running different parametric case studies. First, the safe values of the main system parameters are defined from the view of the stability of the complete system. Then, these different critical parameters of the system are mapped together to predict their influence on the system. The large signal stability is examined through the response of the power system to different types of transient changes. There are different load steps applied to the critical parameters of the system at the maximum or minimum stability boundary limit found by the mapping section. The maximum load step after which the system can recover and remain stable is defined. The other type of large signal stability analysis done is the study of faults. There are different faults to be studied; for example, over voltage, under voltage and over current.
Master of Science
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Wong, Kwok-Tung. "A generalised transients program for power system protection studies." Thesis, University of Manchester, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.330295.

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Brockhoeft, Tetiana. "Educational Modeling for Fault Analysis of Power Systems with STATCOM Controllers using Simulink." ScholarWorks@UNO, 2014. http://scholarworks.uno.edu/td/1906.

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The analysis of power systems under fault condition represents one of the most important and complex tasks in power engineering. The study and detection of these faults are necessary to ensure that the reliability and stability of the power system do not suffer a decrement as a result of a critical event such as fault. The purpose of this thesis is to develop and to present an educational tool for students to model FACTS devices using Simulink. Furthermore, the development of this thesis provides the means for students to model different types of faults. The development is based on presenting a power system – the Test System - by its simplest form including generation, transmission, transformers, loads and STATCOM device as an example of the general FACTS devices. The thesis includes modeling of the Test System using Simulink and MATLAB program to produce the results for further analysis. The findings and development included in the thesis is intended to serve as an educational tool for students interested in the study of faults and their impact on FACTS devices. Students may use the thesis as the building block for developing models of larger and more complex power systems using Simulink and MATLAB programs for further study of impacts of FACTS devices in power systems.
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McDonald, John D. F. "Investigations into the design of Powerformer for optimal generator and system performance under fault conditions /." [St. Lucia, Qld], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18316.pdf.

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Minkley, Warick. "Analysis of restricted earth fault relay application within a shunt capacitor bank design impacting on protection stability." Thesis, Nelson Mandela Metropolitan University, 2013. http://hdl.handle.net/10948/d1021106.

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This research is aimed at analyzing the performance of the restricted earth fault relay used on a 400kV capacitor bank scheme used on the Eskom Transmission network. After the commissioning of two Capacitor Banks using the above mentioned scheme design the plant was energized. As a result of the energization the Shunt Capacitor Bank (SCB) then experienced spurious trips. The cause of the trips was found to be the operation of the restricted earth fault relay. In this research project, restricted earth fault protection on SCBs in the Eskom Transmission environment will be the area of interest. The proposed research will analyze the current SCB protection scheme in service specifically looking at the restricted earth fault circuit design and relay performance. An equivalent model of the SCB from primary plant perspective based on theory will be derived. Recording and analyzing of Comtrade transient waveforms respectively, when the bank is nergized, will be done in order to provide a reference base to work from. Manual alculations of various parameters from the derived model including transient inrush currents and fault currents will be performed to access applicable scheme parameters. Further calculations will include the voltage setting for the restricted earth fault relay. As a result of the analysis a recommendation will be made on a viable solution or a revised design will be put forward, based on the results, to improve the scheme’s performance. The protection scheme is used on the two 400kV 100MVAR capacitor banks 11 and 12 at Hydra Substation.
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Blair, Steven M. "The analysis and application of resistive superconducting fault current limiters in present and fututre power systems." Thesis, University of Strathclyde, 2013. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=19008.

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Fault current levels in electrical systems are rising due to natural growth in demand, the increasing presence of distributed generation (DG), and increased network interconnection. This rising trend is expected to continue in the future. Marine vessel power systems are highly power-dense and are often safety-critical. Power system protection is increasingly challenging in these systems. Superconducting fault current limiters (SFCLs) o er an attractive solution to many of the issues faced. This thesis establishes and reviews the state of the art in resistive SFCL technology and application knowledge, and provides crucial research-based guidance for the adoption of resistive SFCLs in future power systems. The issues associated with the application of resistive SFCLs- including location, resistance rating, the recovery period, and interaction with protection systems are demonstrated. The relationship between several resistive SFCL design parameters is established using a gener ic analytical approach, hence providing a framework for validating SFCL designs. In particular, it is shown that a particular SFCL resistance rating leads to a peak in the superconductor energy dissipation, which generally should be avoided. It is proven that resistive SFCLs have an inverse current-time characteristic, i.e., they will operate in a time that inversely depends upon the initial fault current magnitude. This knowledge is critical for underpinning the operation of a novel protection scheme using multiple resistive SFCLs. The scheme offers several advantages: very fast-acting operation in response to faults anywhere on the system under study; maximum prospective fault currents are prevented from occurring, reducing the duty on circuit breakers; inherent, fast-acting backup; and communications is not required. It is shown that the scheme is suited to highly-interconnected systems with a high presence of DG. The scheme is readily applicable to the design of future utility and marine vessel power systems.
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Luo, Xu. "Power system fault analysis based on intelligent techniques and intelligent electronic device data." Texas A&M University, 2003. http://hdl.handle.net/1969.1/5797.

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This dissertation has focused on automated power system fault analysis. New contributions to fault section estimation, protection system performance evaluation and power system/protection system interactive simulation have been achieved. Intelligent techniques including expert systems, fuzzy logic and Petri-nets, as well as data from remote terminal units (RTUs) of supervisory control and data acquisition (SCADA) systems, and digital protective relays have been explored and utilized to fufill the objectives. The task of fault section estimation is difficult when multiple faults, failures of protection devices, and false data are involved. A Fuzzy Reasoning Petri-nets approach has been proposed to tackle the complexities. In this approach, the fuzzy reasoning starting from protection system status data and ending with estimation of faulted power system section is formulated by Petri-nets. The reasoning process is implemented by matrix operations. Data from RTUs of SCADA systems and digital protective relays are used as inputs. Experiential tests have shown that the proposed approach is able to perform accurate fault section estimation under complex scenarios. The evaluation of protection system performance involves issues of data acquisition, prediction of expected operations, identification of unexpected operations and diagnosis of the reasons for unexpected operations. An automated protection system performance evaluation application has been developed to accomplish all the tasks. The application automatically retrieves relay files, processes relay file data, and performs rule-based analysis. Forward chaining reasoning is used for prediction of expected protection operation while backward chaining reasoning is used for diagnosis of unexpected protection operations. Lab tests have shown that the developed application has successfully performed relay performance analysis. The challenge of power system/protection system interactive simulation lies in modeling of sophisticated protection systems and interfacing the protection system model and power system network model seamlessly. An approach which utilizes the "compiled foreign model" mechanism of ATP MODELS language is proposed to model multifunctional digital protective relays in C++ language and seamlessly interface them to the power system network model. The developed simulation environment has been successfully used for the studies of fault section estimation and protection system performance evaluation.
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BONFIETTI, GERSON. "Analise da confiabilidade do sistema de suprimento de energia eletrica de emergencia de um reator nuclear de pequeno porte." reponame:Repositório Institucional do IPEN, 2003. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11129.

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Dissertacao (Mestrado)
IPEN/D
Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
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Al-Atrash, Hussam. "ANALYSIS AND DESIGN OF A MODULAR SOLAR-FED FAULT-TOLERANT POWER SYSTEM WITH MAXIMUM POWER POINT TRACKING." Master's thesis, University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2572.

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Solar power is becoming ever more popular in a variety of applications. It is particularly attractive because of its abundance, renewability, and environment friendliness. Solar powered spacecraft systems have ever-expanding loads with stringent power regulation specifications. Moreover, they require a light and compact design of their power system. These constraints make the optimization of power harvest from solar arrays a critical task. Florida Power Electronics Center (FPEC) at UCF set to develop a modular fault-tolerant power system architecture for space applications. This architecture provides a number of very attractive features including Maximum Power Point Tracking (MPPT) and uniform power stress distribution across the system. MPPT is a control technique that leads the system to operate its solar sources at the point where they provide maximum power. This point constantly moves following changes in ambient operating conditions. A digital controller is setup to locate it in real time while optimizing other operating parameters. This control scheme can increase the energy yield of the system by up to 45%, and thus significantly reduces the size and weight of the designed system. The modularity of the system makes it easy to prototype and expand. It boosts its reliability and allows on-line reconfiguration and maintenance, thus reducing down-time upon faults. This thesis targets the analysis and optimization of this architecture. A new modeling technique is introduced for MPPT in practical environments, and a novel digital power stress distribution scheme is proposed in order to properly distribute peak and thermal stress and improve reliability. A 2kW four-channel prototype of the system was built and tested. Experimental results confirm the theoretical improvements, and promise great success in the field.
M.S.E.E.
Department of Electrical and Computer Engineering
Engineering and Computer Science
Electrical Engineering
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Books on the topic "Fault analysis/power systems"

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Tleis, Nasser D. Power systems modelling and fault analysis: Theory and practice. Amsterdam: Elsevier/Newnes, 2008.

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Momoh, James A. Fault analysis of space station DC power systems using neural network adaptive wavelets to detect faults. Albuquerque, N.M: National Aeronautics and Space Administration, 1997.

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Momoh, James A. Fault analysis of space station DC power systems using neural network adaptive wavelets to detect faults. [Cleveland, Ohio]: National Aeronautics and Space Administration [Lewis Research Center, 1997.

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Booth, Stephen Howard. Expert systems for fault analysis. Birmingham: Aston University. Department of Chemical Engineering andApplied Chemistry, 1993.

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Power systems analysis. Englewood Cliffs, N.J: Prentice-Hall, 1986.

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Rea, Samuel A. Economic analysis of fault and no-fault liability systems. Toronto: Department of Economics, University of Toronto, 1986.

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Wang, Xi-Fan, Yonghua Song, and Malcolm Irving. Modern Power Systems Analysis. Boston, MA: Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-72853-7.

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Power system analysis. 3rd ed. [United States]: PSA Pub., 2010.

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Saadat, Hadi. Power system analysis. Boston: WCB/McGraw-Hill, 1999.

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Nagsarkar, T. K. Power system analysis. New Delhi: Oxford University Press, 2007.

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Book chapters on the topic "Fault analysis/power systems"

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Chakravorti, Sivaji, Debangshu Dey, and Biswendu Chatterjee. "Impulse Fault Analysis." In Power Systems, 27–60. London: Springer London, 2013. http://dx.doi.org/10.1007/978-1-4471-5550-8_2.

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Patel, Mukund R. "Fault Current Analysis." In Shipboard Electrical Power Systems, 213–38. 2nd ed. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003191513-9.

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Manditereza, Patrick T. "Fault Analysis." In Power System Protection in Smart Grid Environment, 33–79. Boca Raton : Taylor & Francis, a CRC title, part of the Taylor & Francis imprint, a member of the Taylor & Francis Group, the academic division of T&F Informa, plc, 2019.: CRC Press, 2019. http://dx.doi.org/10.1201/9780429401756-2.

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Ukil, Abhisek, Yew Ming Yeap, and Kuntal Satpathi. "Time-Frequency Domain Analysis: Wavelet-Transform Based Fault Detection." In Power Systems, 223–42. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2977-1_7.

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Čepin, Marko. "Fault Tree Analysis." In Assessment of Power System Reliability, 61–87. London: Springer London, 2011. http://dx.doi.org/10.1007/978-0-85729-688-7_5.

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Ghaedi, Alireza, and Mohammad Esmail Hamedani Golshan. "Wide-area Transmission System Fault Analysis Based on Three-Phase State Estimation with Considering Measurement Errors." In Power Systems, 449–79. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-54275-7_17.

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Ashmole, P. H. "Power System Alarm Analysis and Fault Diagnosis Using Expert Systems." In Failsafe Control Systems, 207–16. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-009-0429-3_15.

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Shertukde, Hemchra Madhusudan. "Symmetrical Component Analysis in Fault Calculations." In Power Systems Analysis Illustrated with MATLAB® and ETAP®, 183–97. First edition. | Boca Raton, FL : CRC Press/Taylor & Francis Group, 2018.: CRC Press, 2019. http://dx.doi.org/10.1201/9780429436925-11.

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Kezunovic, Mladen, Jinfeng Ren, and Saeed Lotfifard. "Power System Fault Analysis and Short-Circuit Computations." In Design, Modeling and Evaluation of Protective Relays for Power Systems, 9–44. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-20919-7_2.

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Singh, Priyanka, Rudra Narayan Dash, and Chinmoy Kumar Panigrahi. "Open Phase Fault Analysis of a Three-Phase Induction Motor." In Advances in Power Systems and Energy Management, 81–89. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-7504-4_9.

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Conference papers on the topic "Fault analysis/power systems"

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"Protection and Fault Analysis." In 2006 Large Engineering Systems Conference on Power Engineering. IEEE, 2006. http://dx.doi.org/10.1109/lescpe.2006.280376.

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Fernando, Heshan, Vedang Chauhan, and Brian Surgenor. "Image-Based Versus Signal-Based Sensors for Machine Fault Detection and Isolation." In ASME 2014 12th Biennial Conference on Engineering Systems Design and Analysis. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/esda2014-20102.

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This paper presents the results of a comparative study that investigated the use of image-based and signal-based sensors for fault detection and fault isolation of visually-cued faults on an automated assembly machine. The machine assembles 8 mm circular parts, from a bulk-supply, onto continuously moving carriers at a rate of over 100 assemblies per minute. Common faults on the machine include part jams and ejected parts that occur at different locations on the machine. Two sensor systems are installed on the machine for detecting and isolating these faults: an image-based system consisting of a single camera and a signal-based sensor system consisting of multiple greyscale sensors and limit switches. The requirements and performance of both systems are compared for detecting six faults on the assembly machine. It is found that both methods are able to effectively detect the faults but they differ greatly in terms of cost, ease of implementation, detection time and fault isolation capability. The conventional signal-based sensors are low in cost, simple to implement and require little computing power, but the installation is intrusive to the machine and readings from multiple sensors are required for faster fault detection and isolation. The more sophisticated image-based system requires an expensive, high-resolution, high-speed camera and significantly more processing power to detect the same faults; however, the system is not intrusive to the machine, fault isolation becomes a simpler problem with video data, and the single camera is able to detect multiple faults in its field of view.
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Sun, Hongbo, Daniel Nikovski, Tomihiro Takano, Yasuhiro Kojima, and Tetsufumi Ohno. "Line fault analysis of ungrounded distribution systems." In 2013 North American Power Symposium (NAPS). IEEE, 2013. http://dx.doi.org/10.1109/naps.2013.6666851.

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Khan, Faraz Zafar, R. Nagaraja, and H. P. Khincha. "Improved fault location computation using prony analysis for short duration fault." In 2014 Eighteenth National Power Systems Conference (NPSC). IEEE, 2014. http://dx.doi.org/10.1109/npsc.2014.7103787.

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Ngaopitakkul, Atthapol, and Apichart Yodkhuang. "Fault Analysis in Wind Power using Discrete Wavelet Transform." In Power and Energy Systems. Calgary,AB,Canada: ACTAPRESS, 2012. http://dx.doi.org/10.2316/p.2012.768-100.

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Chen, Xiyang, Kewei Zhang, and Yucheng Peng. "Research on Multi Diagnosis Methods for Hydro-Generator Sets." In ASME 7th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2004. http://dx.doi.org/10.1115/esda2004-58163.

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Hydro-Generator Sets Condition Monitoring and Predictive Maintenance activity has increased dramatically over the past few years. The Fault Diagnostic System is the key technique for the Predictive Maintenance. This paper discusses the Fault Diagnostic System function structure, system design and inferential strategy of Multi-Fault Diagnostic System of the Hydro-Generator Sets. The developing of the power system to big unit requires the higher automation and reliability of the power station. Electrical power systems are constantly exposed to faults and disturbances. This may lead to damage or it may pose a threat to reliable power system operation if a faulty cannot be quickly isolated from the system operation. In accordance with diversity and complexity of Hydro-Generator Sets faults, this paper brings forward a type of fault diagnosis method based on Multi-Diagnosis methods. The Multi-Diagnosis system is constituted of two Sub-Diagnosis systems: one is On-Line Sub-Diagnosis system that based on Bayesian Network (BN) just for the modeling with Bayesian Network has been a powerful tool to solve many uncertainty problems and also with the ability of predicting the future diagnosis; the other is Off-Line Sub-Diagnosis System that based on Model of a hydraulic Turbine-Generator Rotor-Bearing. In order to apply the Bayesian Network model to the engineering fields, we have to solve the problem of constructing the Bayesian Network. Then it suggests a method of constructing Bayesian Network based on the Fault Trees that widely used by the engineers. Base on the construction method, we will construct the Bayesian Network quickly, and Bayesian Network is more suitable for Hydro-Generator Sets fault diagnosis. In accordance with the On-Line Diagnosis Sub-System, it adopts Case-Based Reasoning to make the decision of final diagnosis result or further diagnosis. However, the method mentioned above is limited because of its bottleneck of the knowledge acquisition. The model strategy of the Rotor-Bearing system of Hydro-Generator is discussed and a multi-degree-freedom nonlinear model is developed. It proposes the simulation in accordance with the three fields such as: waterpower, electric and machine. Mechanical, electrical and hydraulic forces acting on rotor externally can be taken into account during the model calculating process. The transient responses of the system are calculated by combined used the transfer matrix method. This paper brings forward a prototype of Hydro-Generator Sets Fault Diagnostic System in order to make a more efficient fault diagnostic decision.
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Cai, Yu, Wei Li, Bao Zhang, Wenjian Wu, Deren Sheng, and Jianhong Chen. "Reliable Analysis on Fast Valving of Ultra-Supercritical Unit Under Transient Fault Conditions." In ASME 2017 Power Conference Joint With ICOPE-17 collocated with the ASME 2017 11th International Conference on Energy Sustainability, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/power-icope2017-3230.

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Fast valving of ultra-supercritical unit has great effects on over-speed prevention, load-shedding control, transient stability analysis of electrical system and other security problems. The purpose of fast valving is to maintain the stability of power system once fault or load shedding of unit occurs in the electric power system. Therefore, it is of great significance to study the reliability of fast valving for ultra-supercritical unit. In this paper, the KU ( short shedding) logic condition of SIEMENS T3000 system is analyzed as the research object of fast valving. The unit can be avoided over speed by monitoring the unit load and fast valving under faulty grid conditions based on the KU control. A series of measures will be taken after KU is triggered, for instance the governing valving will be closed quickly and the DEH (digital electro-hydraulic) control of the steam turbine will be switched to speeding control mode. On the other hand, the unit will return to normal operation if the transient fault of power grid disappears. The key contributions of this thesis include three parts: Firstly, based on the analysis of control characteristics of ultra-supercritical unit and protective logic and triggered conditions of KU function, a novel dynamic model by coupling the fast valving of steam turbine and the transient stability of generator is established by applying the PSCAD software. Then, the dynamic response process of ultra-supercritical unit is simulated and calculated by adopting the coupling dynamic model when KU function is triggered. Also the influence factors and reliability of fast valving are analyzed under transient fault conditions. Finally, two optimized measures by increasing the time delay and the speed of quantitative judgment are put forward to reduce risks and avoid the misoperation of signal distortion which may be caused by the power transmitter under transient fault conditions. The results of this study can not only help to evaluate the reliability of fast valving function scientifically in power grid transient fault, but also guide the technicians to analyze the stability of the power grid.
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Radojevic, Zoran, and Vladimir Terzija. "Two Terminals Numerical Algorithm for Fault Distance Calculation and Fault Analysis." In 2006 IEEE PES Power Systems Conference and Exposition. IEEE, 2006. http://dx.doi.org/10.1109/psce.2006.296453.

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Davison, Craig R., and A. M. Birk. "Automated Fault Diagnosis for Small Gas Turbine Engines." In ASME Turbo Expo 2002: Power for Land, Sea, and Air. ASMEDC, 2002. http://dx.doi.org/10.1115/gt2002-30029.

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In one possible model of distributed power generation a large number of users will operate individual, gas turbine powered, cogeneration systems. These systems will be small, relatively inexpensive, and installed in locations without ready access to gas turbine maintenance experts. Consequently an automated method to monitor the engine and diagnose its health is required. To remain compatible with the low cost of the power system the diagnostics must also be relatively inexpensive to install and operate. Accordingly a minimum number of extra sensors should be used and the analysis performed by a common personal computer system. The current work automates the diagnosis of component faults by comparing the engine’s operating trends to the trends for known faults. This allows the relative percentage chance of each fault occurring to be determined. The likelihood of each fault is then compared, to determine which component is degrading. The technique can be adapted to compare the engines historic operating trend or a single operating point. In this initial work a computer model was used as a test bed and 5 faults were introduced individually. The technique successfully diagnosed the faulty component using either the operating trend or a single operating point.
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Mukhopadhyay, Prithwish, Rajkumar Anumasula, Abhimanyu Gartia, Chandan Kumar, Pushpa Seshadri, and Sunil Patil. "Case study on fault analysis using PMU." In 2014 Eighteenth National Power Systems Conference (NPSC). IEEE, 2014. http://dx.doi.org/10.1109/npsc.2014.7103778.

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Reports on the topic "Fault analysis/power systems"

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Sumita, Ushio, J. G. Shanthikumar, and Yasushi Masuda. Analysis of Fault Tolerant Computer Systems. Fort Belvoir, VA: Defense Technical Information Center, February 1985. http://dx.doi.org/10.21236/ada170004.

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Nicola, V. F., V. G. Kulkarni, and K. S. Trivedi. Queueing Analysis of Fault-Tolerant Computer Systems. Fort Belvoir, VA: Defense Technical Information Center, December 1985. http://dx.doi.org/10.21236/ada170303.

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Jensen, Robert R., Steven A. Benson, and Jason D. Laumb. ADVANCED POWER SYSTEMS ANALYSIS TOOLS. Office of Scientific and Technical Information (OSTI), August 2001. http://dx.doi.org/10.2172/788727.

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Kim, K. H. Design and Analysis of Fault-Tolerant Distributed Real-Time Computer Systems. Fort Belvoir, VA: Defense Technical Information Center, July 1991. http://dx.doi.org/10.21236/ada239382.

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Andruski, Joel, and Thomas E. Drennen. Power Systems Life Cycle Analysis Tool (Power L-CAT). Office of Scientific and Technical Information (OSTI), January 2011. http://dx.doi.org/10.2172/1008142.

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Drennen, Thomas E., and Joel Andruski. Power Systems Life Cycle Analysis Tool (Power LCAT) Technical Guide. Office of Scientific and Technical Information (OSTI), May 2012. http://dx.doi.org/10.2172/1601966.

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Elwood, D. M. Stability analysis of large electric power systems. Office of Scientific and Technical Information (OSTI), January 1993. http://dx.doi.org/10.2172/6853993.

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Elwood, D. M. Stability analysis of large electric power systems. Office of Scientific and Technical Information (OSTI), January 1993. http://dx.doi.org/10.2172/10127614.

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Miller, F. L. ,. Jr, and D. E. Zimmerman. Compilation of Failure Data and Fault Tree Analysis for Geothermal Energy Conversion Systems. Office of Scientific and Technical Information (OSTI), November 1990. http://dx.doi.org/10.2172/882394.

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Zhang, Ying, and Krishnendu Chakrabarty. Task Feasibility Analysis and Dynamic Voltage Scaling in Fault-Tolerant Real-Time Embedded Systems. Fort Belvoir, VA: Defense Technical Information Center, January 2004. http://dx.doi.org/10.21236/ada439598.

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