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Dissertations / Theses on the topic 'Power line monitoring'

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1

Yang, Yi. "Power line sensor networks for enhancing power line reliability and utilization." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41087.

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Over the last several decades, electricity consumption and generation have continually grown. Investment in the Transmission and Distribution (T&D) infrastructure has been minimal and it has become increasingly difficult and expensive to permit and build new power lines. At the same time, a growing increase in the penetration of renewable energy resources is causing an unprecedented level of dynamics on the grid. Consequently, the power grid is congested and under stress. To compound the situation, the utilities do not possess detailed information on the status and operating margins on their
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2

Bathe, Martin J. "On-line condition monitoring of power press tooling using ultrasonics." Thesis, Birmingham City University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316614.

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The principal objective of the research programme was to develop a technique for monitoring the condition of power-press cutting tools using ultrasonics. The principle of the technique was based upon the reflection of Surface Acoustic Waves (SAWs) from the tooling's cutting edges, and the main aim of the research was to establish the relationship between reflected SAW amplitude and tool edge condition. Three approaches were used to establish the relationship, namely on-line experiments, off-line bench-top experiments, and mathematical modelling. The modelling work involved using Transmission L
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3

Li, Gongde. "Faraday current sensing using chromatic modulation." Thesis, University of Liverpool, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367273.

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4

Zhao, Patrick. "Underground power cable environments monitoring & analysis." Thesis, Queensland University of Technology, 2002. https://eprints.qut.edu.au/36158/1/z%2036158_Zhao_2002.pdf.

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Changes in the electricity supply industry and environmental concerns have generated new interest in underground power cables. There is pressure on the electricity supply industry for the wider use of underground power cables in urban areas. Also the industry is seeking to achieve greater utilisation of its installed assets. Knowledge of cable parameters has been well established. However the environment in which the cables are buried is not so well understood. The objective of this research was to evaluate thermal parameters of the local environment of the buried power cable to establish a
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5

Setayeshmehr, Alireza [Verfasser]. "Investigations of Off-Line and On-Line Monitoring and Diagnosis Methods on Power Transformers / Alireza Setayeshmehr." München : Verlag Dr. Hut, 2013. http://d-nb.info/1042307970/34.

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6

Hui, Ka Chun. "Voltage collapse indicators for on-line voltage security monitoring in power systems." Thesis, Imperial College London, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313312.

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7

Dong, Bo. "Fiber Optic Sensors for On-Line, Real Time Power Transformer Health Monitoring." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/77175.

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High voltage power transformer is one of the most important and expensive components in today's power transmission and distribution systems. Any overlooked critical fault generated inside a power transformer may lead to a transformer catastrophic failure which could not only cause a disruption to the power system but also significant equipment damage. Accurate and prompt information on the health state of a transformer is thus the critical prerequisite for an asset manager to make a vital decision on a transformer with suspicious conditions. Partial discharge (PD) is not only a precursor of in
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8

Mann, Jaspreet Kaur. "On-line health monitoring of passive electronic components using digitally controlled power converter." Thesis, Cranfield University, 2016. http://dspace.lib.cranfield.ac.uk/handle/1826/10778.

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This thesis presents System Identification based On-Line Health Monitoring to analyse the dynamic behaviour of the Switch-Mode Power Converter (SMPC), detect, and diagnose anomalies in passive electronic components. The anomaly detection in this research is determined by examining the change in passive component values due to degradation. Degradation, which is a long-term process, however, is characterised by inserting different component values in the power converter. The novel health-monitoring capability enables accurate detection of passive electronic components despite component variation
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9

Biswas, Shuchismita. "Power Grid Partitioning and Monitoring Methods for Improving Resilience." Diss., Virginia Tech, 2021. http://hdl.handle.net/10919/104684.

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This dissertation aims to develop decision-making tools that aid power grid operators in mitigating extreme events. Two distinct areas are focused on: a) improving grid performance after a severe disturbance, and b) enhancing grid monitoring to facilitate timely preventive actions. The first part of the dissertation presents a proactive islanding strategy to split the bulk power transmission system into smaller self-adequate islands in order to arrest the propagation of cascading failures after an event. Heuristic methods are proposed to determine in what sequence should the island boundary li
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10

Li, Zhengrong. "Aerial image analysis using spiking neural networks with application to power line corridor monitoring." Thesis, Queensland University of Technology, 2011. https://eprints.qut.edu.au/46161/1/Zhengrong_Li_Thesis.pdf.

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Trees, shrubs and other vegetation are of continued importance to the environment and our daily life. They provide shade around our roads and houses, offer a habitat for birds and wildlife, and absorb air pollutants. However, vegetation touching power lines is a risk to public safety and the environment, and one of the main causes of power supply problems. Vegetation management, which includes tree trimming and vegetation control, is a significant cost component of the maintenance of electrical infrastructure. For example, Ergon Energy, the Australia’s largest geographic footprint energy distr
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11

Berzoy, Alberto. "On-line Condition Monitoring, Fault Detection and Diagnosis in Electrical Machines and Power Electronic Converters." FIU Digital Commons, 2018. https://digitalcommons.fiu.edu/etd/3643.

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The objective of this PhD research is to develop robust, and non-intrusive condition monitoring methods for induction motors fed by closed-loop inverters. The flexible energy forms synthesized by these connected power electronic converters greatly enhance the performance and expand the operating region of induction motors. They also significantly alter the fault behavior of these electric machines and complicate the fault detection and protection. The current state of the art in condition monitoring of power-converter-fed electric machines is underdeveloped as compared to the maturing conditio
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12

Dong, Jingyuan. "Power System Disturbance Analysis and Detection Based on Wide-Area Measurements." Diss., Virginia Tech, 2008. http://hdl.handle.net/10919/30129.

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Wide-area measurement systems (WAMS) enable the monitoring of overall bulk power systems and provide critical information for understanding and responding to power system disturbances and cascading failures. The North American Frequency Monitoring Network (FNET) takes GPS-synchronized wide-area measurements in a low-cost, easily deployable manner at the 120 V distribution level, which presents more opportunities to study power system dynamics. This work explores the topics of power system disturbance analysis and detection by utilizing the wide-area measurements obtained in the distribution ne
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13

Ghasemi, Hassan. "On-line Monitoring and Oscillatory Stability Margin Prediction in Power Systems Based on System Identification." Thesis, University of Waterloo, 2006. http://hdl.handle.net/10012/834.

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Poorly damped electromechanical modes detection in a power system and corresponding stability margins prediction are very important in power system planning and operation, and can provide significant help to power system operators with preventing stability problems. <br /><br /> Stochastic subspace identification is proposed in this thesis as a technique to extract the critical mode(s) from the measured ambient noise without requiring artificial disturbances (e. g. a line outage), allowing these critical modes to be used as an on-line index, which is referred here to as System Identific
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14

Wade, Eric R. (Eric Randolph) 1978. "A body area network for wearable health monitoring : conductive fabric garment utilizing DC-power-line carrier communication." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/38542.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2007.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Includes bibliographical references (p. 112-116).<br>Wearable computing applications are becoming increasingly present in our lives. Of the many wearable computing applications, wearable health monitoring may have the most potential to make a lasting positive impact. The ability to remotely monitor physiological signals such as respiration, motion, a
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15

Yildiz, Bilge 1976. "Development of a hybrid intelligent system for on-line real-time monitoring of nuclear power plant operations." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/30002.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 2003.<br>Includes bibliographical references (p. 239-244).<br>A nuclear power plant (NPP) has an intricate operational domain involving systems, structures and components (SSCs) that vary in scale and complexity. Many of the large scale SSCs contribute to the lost availability in the operation of the NPPs, when their malfunctions cannot be detected in a timely manner. The lost availability can result in millions of dollars economic loss. Currently, one of the main reasons of the incapacity for avoiding such c
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16

Liang, Yishan. "Studies of Monitoring and Diagnosis Systems for Substation Apparatus." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/30791.

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Substation apparatus failure plays a major role in reliability of power delivery systems. Traditionally, most utilities perform regular maintenance in order to prevent equipment breakdown. Condition-based maintenance strategy monitors the condition of the equipment by measuring and analyzing key parameters and recommends optimum maintenance actions. Equipment such as transformers and standby batteries which are valuable and critical assets in substations has attracted increased attentions in recently years. An automated monitoring and diagnosis tool for power transformers based on dissolved
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17

Foster, Kathleen. "Design of an inlet line monitor system for the state of Illinois gaseous effluent monitoring system." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/17323.

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18

Pasdar, Amir Mehdi. "Real-Time Health Monitoring of Power Networks Based on High Frequency Behavior." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1415873192.

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19

Rosa, Magali da. "Monitoramento de temperatura do motor de aerogeradores de pequeno porte utilizando Power Line Communication -PLC." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/49308.

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Os sistemas de controle e supervisão têm se revelado expressivamente importantes nos sistemas de produção. Garantir o funcionamento com qualidade dos processos industriais exige um controle permanente, sendo necessário manter constantes algumas variáveis. Um dos fatores que se destacam na utilização de monitoramento remoto é a possibilidade de centralizar o controle de um determinado processo em locais distintos, muitas vezes distantes do ponto de origem do problema, podendo ser acessado pelo responsável pelo processo e/ou muitas vezes resolvido pelo mesmo, sem a necessidade de locomover-se at
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20

Kang, Pengju. "On-line condition assessment of power transformer on-load tap-changers : transient vibration analysis using wavelet transform and self organising map." Thesis, Queensland University of Technology, 2000.

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21

Apshingekar, Prafulla P. "Applications of ultrasound in pharmaceutical processing and analytics." Thesis, University of Bradford, 2014. http://hdl.handle.net/10454/14127.

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Innovations and process understanding is the current focus in pharmaceutical industry. The objective of this research was to explore application of high power ultrasound in the slurry crystallisation and application of low power ultrasound (3.5 MHz) as process analytical technology (PAT) tool to understand pharmaceutical processing such as hot melt extrusion. The effect of high power ultrasound (20 kHz) on slurry co-crystallisation of caffeine / maleic acid and carbamazepine / saccharin was investigated. To validate low power ultrasound monitoring technique, it was compared with the other tech
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22

van, Rensburg Karel Jensen. "Analysis of arcing faults on distribution lines for protection and monitoring." Thesis, Queensland University of Technology, 2003. https://eprints.qut.edu.au/15800/1/Karel_van_Rensburg_Thesis.pdf.

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This thesis describes an investigation into the influences of arcing and conductor deflection due to magnetic forces on the accuracy of fault locator algorithms in electrical distribution networks. The work also explores the possibilities of using the properties of an arc to identify two specific types of faults that may occur on an overhead distribution line. A new technique using the convolution operator is introduced for deriving differential equation algorithms. The first algorithm was derived by estimating the voltage as an array of impulse functions while the second algorithm was derive
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23

van, Rensburg Karel Jensen. "Analysis of arcing faults on distribution lines for protection and monitoring." Queensland University of Technology, 2003. http://eprints.qut.edu.au/15800/.

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This thesis describes an investigation into the influences of arcing and conductor deflection due to magnetic forces on the accuracy of fault locator algorithms in electrical distribution networks. The work also explores the possibilities of using the properties of an arc to identify two specific types of faults that may occur on an overhead distribution line. A new technique using the convolution operator is introduced for deriving differential equation algorithms. The first algorithm was derived by estimating the voltage as an array of impulse functions while the second algorithm was derive
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24

Holeš, David. "Vizualizace a on-line kontrola důležitých parametrů blokových a odbočkových transformátorů jaderné elektrárny Dukovany." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-413207.

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The thesis focuses on a design of visualization and setting limits of important parametres of power and own-consumption transformers at the nuclear power plant Dukovany. In the first part there is a description of a present technical state of oil power transformers at this power plant, including a description of a currently installed transformers monitoring system and electro monitoring system. The second part deals with a design of a visialization of parametrs and a diagram design of active-access displays of monitored parametrs of these transformers. In the thesis there is also a description
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25

Najafi, Syed Ahmed Ali. "Energy Harvesting From Overhead Transmission Line Magnetic Fields." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1548448189459464.

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26

Kryukova, N. V., Evgen Viktorovych Goncharov, and I. V. Polyakov. "Modern monitoring systems of electric power lines." Thesis, NTU "KhPI", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/38909.

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27

SANTOS, GEAN R. dos. "Algoritmo de colônia de formigas e redes neurais artificiais aplicados na monitoração e detecção de falhas em centrais nucleares." reponame:Repositório Institucional do IPEN, 2016. http://repositorio.ipen.br:8080/xmlui/handle/123456789/26798.

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Submitted by Claudinei Pracidelli (cpracide@ipen.br) on 2016-11-11T09:45:23Z No. of bitstreams: 0<br>Made available in DSpace on 2016-11-11T09:45:23Z (GMT). No. of bitstreams: 0<br>Um desafio recorrente em processos produtivos é o desenvolvimento de sistemas de monitoração e diagnóstico. Esses sistemas ajudam na detecção de mudanças inesperadas e interrupções, prevenindo perdas e mitigando riscos. Redes Neurais Artificiais (RNA) têm sido largamente utilizadas na criação de sistemas de monitoração. Normalmente as RNA utilizadas para resolver este tipo de problema são criadas levando-se em cont
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28

James, Peter Andrew. "Health monitoring of IGBTs in automotive power converter systems." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/health-monitoring-of-igbts-in-automotive-power-converter-systems(224a6b3c-a1f0-4379-9ff7-eb5603f8deb9).html.

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The use of IGBT power modules in the automotive industry is becoming increasingly common as manufacturers develop more hybrid and all electric vehicles. In an industry such as this, the reliability of a component is critical and vehicle manufacturers have conducted much research into diagnostic and prognostic systems for internal combustion engines that run in real time on the vehicle to determine when components will fail. Power electronic components do not have similar prognostics available. The traditional use of power electronic modules has been in applications where their life or duty cyc
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29

Aburaghiega, Ehnaish Ali F. "Condition monitoring and evaluation techniques for extending power transformers' life cycle." Thesis, Glasgow Caledonian University, 2017. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.743901.

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30

Bartlett, E. J. "Power system arcing fault location based on VHF radiowave propagation." Thesis, University of Bath, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340979.

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31

Habtemariam, Filmon A. "HIGH-FREQUENCY IMPEDANCE CHARACTERISTICS AND HEALTH CONDITION MONITORING OF OVERHEAD POWER LINES." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1472735633.

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32

Černín, Kamil. "Reconstruction of conductor movement and monitoring of high voltage lines." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218765.

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Tahle práce se zabývá monitorováním venkovních vysokonapěťových vedeních, což mohou být vedení od 70kV do 400kV. Senzory jsou umístěny na vodiči a hlavní myšlenkou je vyhodnotit mechanické chování vodičů, a to od nízkých frekvencí (zlomky Hz) až po vysoké frekvence (desítky Hz). Tahle práce se zabývala pohyby o nízkých frekvencích a vysokých amplitudách a popsala možnosti sestavení těchto pohybů na základě měření ze senzorů. Konkrétně se jedná o pohyby v případě silného větru, zkratu, opadávání ledu nebo dalších. Všechno tohle pomáhá operátorů dělat rozhodnutí ohledně provozování sítí. Vývoj z
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33

Nascimento, Júnior Newton Teixeira do. "Uma metodologia para monitoramento das condições operativas de transformadores de potência e análise de tendências baseada em lógica fuzzy." Universidade Federal do Maranhão, 2010. http://tedebc.ufma.br:8080/jspui/handle/tede/452.

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Made available in DSpace on 2016-08-17T14:53:13Z (GMT). No. of bitstreams: 1 Newton_ Teixeira _do_ Nascimento Junior.pdf: 3217306 bytes, checksum: c4c1a1e0f923de4227056ce0050d06f8 (MD5) Previous issue date: 2010-10-05<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>This paper presents a computational method to monitor the operating state of steady electric power transformers in a real time and perspectives of operation over time trends and their operation. The methodology consists of two main steps. The first step is building composed of a block of fuzzy inference s blo
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Phan, Anh Tuan. "Power Systems Model Developments for Power Qality Monitoring : Application to Fundamental Frequency and Unbalance Estimation." Thesis, Mulhouse, 2016. http://www.theses.fr/2016MULH8692/document.

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Les énergies renouvelables, l’énergie sous la forme électrique et son transport à l’aide de réseaux électriques intelligents représentent aujourd’hui des enjeux majeurs car ils ont de grands impacts environnementaux et sociétaux. Ainsi, la production, le transport et la gestion de l’énergie électrique, continuent toujours à susciter un intérêt croissant. Pour atteindre ces objectifs, plusieurs verrous technologiques doivent être levés. Au-delà des questions liées aux architectures des réseaux électriques, aux modèles, aux outils de dimensionnement, à la formalisation de caractéristiques et d’i
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Козловський, Олександр Антонович. "Підвищення ефективності експлуатації повітряних ліній розподільних електричних мереж в умовах ожеледоутворення". Thesis, Центральноукраїнський національний технічний університет, 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/30700.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.14.02 – електричні станції, мережі і системи. – Національний технічний університет "Харківський політехнічний інститут", Харків, 2017. Дисертація присвячена дослідженню проблемних питань, пов'язаних із розробкою інформаційних систем моніторингу стану повітряних ліній в умовах ожеледоутворення, що забезпечують зниження відмов у електропостачанні шляхом надання електротехнічному персоналу завчасної інформації про момент ожеледоутворення. У роботі представлено критичний аналіз існуючих систем моніторингу ожеле
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Козловський, Олександр Антонович. "Підвищення ефективності експлуатації повітряних ліній розподільних електричних мереж в умовах ожеледоутворення". Thesis, НТУ "ХПІ", 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/30699.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.14.02 – електричні станції, мережі і системи. – Національний технічний університет "Харківський політехнічний інститут", Харків, 2017. Дисертація присвячена дослідженню проблемних питань, пов'язаних із розробкою інформаційних систем моніторингу стану повітряних ліній в умовах ожеледоутворення, що забезпечують зниження відмов у електропостачанні шляхом надання електротехнічному персоналу завчасної інформації про момент ожеледоутворення. У роботі представлено критичний аналіз існуючих систем моніторингу ожелед
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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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Pradhan, Manoj Kumar. "Conformal Thermal Models for Optimal Loading and Elapsed Life Estimation of Power Transformers." Thesis, Indian Institute of Science, 2004. https://etd.iisc.ac.in/handle/2005/97.

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Power and Generator Transformers are important and expensive elements of a power system. Inadvertent failure of Power Transformers would cause long interruption in power supply with consequent loss of reliability and revenue to the supply utilities. The mineral oil impregnated paper, OIP, is an insulation of choice in large power transformers in view of its excellent dielectric and other properties, besides being relatively inexpensive. During the normal working regime of the transformer, the insulation thereof is subjected to various stresses, the more important among them are, electrical
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Pradhan, Manoj Kumar. "Conformal Thermal Models for Optimal Loading and Elapsed Life Estimation of Power Transformers." Thesis, Indian Institute of Science, 2004. http://hdl.handle.net/2005/97.

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Power and Generator Transformers are important and expensive elements of a power system. Inadvertent failure of Power Transformers would cause long interruption in power supply with consequent loss of reliability and revenue to the supply utilities. The mineral oil impregnated paper, OIP, is an insulation of choice in large power transformers in view of its excellent dielectric and other properties, besides being relatively inexpensive. During the normal working regime of the transformer, the insulation thereof is subjected to various stresses, the more important among them are, electrical,
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40

Wu, Zhongyu. "Wide Area Analysis and Application in Power System." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/36427.

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Frequency monitoring network (FNET) is an Internet based GPS synchronized wide-area frequency monitoring network deployed at distribution level. At first part of this thesis, FNET structure and characteristics are introduced. After analysis and smoothing FDR signals, the algorithm of event trigger is present with Visual C++ DLL programming. Estimation of disturbance location method is discussed based on the time delay of arriving (TDOA) in the second part of this work. In this section, author shows the multiply method to calculate event time, which is important when deal with pre-disturbance
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Herrera-Orozco, Andrés Ricardo. "Localização de faltas incipientes em sistemas de distribuição de energia elétrica com cabos subterrâneos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/157880.

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Nos sistemas de distribuição de alta e média tensão tem-se aumentado a utilização de linhas de distribuição de energia subterrâneas ou cabos subterrâneos. A ocorrência de faltas nas linhas afeta negativamente a qualidade da energia e o correto funcionamento da rede. O processo que leva a uma falta nos cabos é gradual e está caracterizado por uma série de subciclos de faltas incipientes associadas a uma tensão de arco. Estas, muitas vezes, passam despercebidas e, eventualmente, resultam em uma falta permanente. Os métodos clássicos de localização de faltas como as metodologias baseadas no cálcu
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Mallangi, Siva Sai Reddy. "Low-Power Policies Based on DVFS for the MUSEIC v2 System-on-Chip." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-229443.

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Multi functional health monitoring wearable devices are quite prominent these days. Usually these devices are battery-operated and consequently are limited by their battery life (from few hours to a few weeks depending on the application). Of late, it was realized that these devices, which are currently being operated at fixed voltage and frequency, are capable of operating at multiple voltages and frequencies. By switching these voltages and frequencies to lower values based upon power requirements, these devices can achieve tremendous benefits in the form of energy savings. Dynamic Voltage a
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Makdessi, Maawad. "Modélisation, vieillissement et surveillance de l'état de santé des condensateurs films utilisés dans des applications avioniques." Phd thesis, Université Claude Bernard - Lyon I, 2014. http://tel.archives-ouvertes.fr/tel-01058227.

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Le domaine aéronautique connait de nos jours un engouement sans précédent autour de l'avion plus électrique. L'importance du nombre d'équipements électriques est à un tel point que l'amélioration de leur fiabilité devient incontournable. Actuellement, les composants passifs occupent 75 % des éléments électroniques utilisés en avionique dont la moitié correspond à des condensateurs. Ces derniers doivent donc répondre aux exigences environnementales avioniques assez contraignantes. C'est dans ce contexte que nous nous sommes intéressés particulièrement à l'étude des condensateurs à technologie f
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Tseng, Hsing-Ching, and 曾星璟. "AC Power Energy Monitoring with Power Line Communication." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/43625650248565925727.

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碩士<br>中華大學<br>電機工程學系<br>105<br>In recent years, global warming and energy crisis have become increasingly serious. Most of our energy depends on imported petrochemical raw materials and nuclear, which resulting in a lot of environmental pollution and greenhouse effect. Because the industrial energy consumption is more than half of total energy. Industrial energy efficiency should be improved immediately. In this thesis, the system architecture and requirements are discussed as first step, and then divided the system into two parts master and slave. The PLC and the Ethernet are used for communi
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Chen, Yen-Yuan, and 陳彥淵. "A Power Efficient, Fully Digital Interface, On-Line Thermal/Power Monitoring System." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/53644987095075606781.

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碩士<br>國立清華大學<br>電機工程學系<br>96<br>Due to the advance in CMOS technology and design complexity, more power is dissipated in smaller die area, thus the thermal density of modern VLSI systems is becoming a critical issue. High die temperature can not only degrade circuit performance but also leads to thermal runaway. Therefore, continuous monitoring of die temperature is crucial. This thesis proposes an on-line digital thermal/power monitoring system. The proposed system includes a digital programmable temperature sensor, digital programmable dc-dc buck converter, and a fully digital thermal/powe
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FAN, CHIH-EN, and 范植恩. "Implementation of Auto Power Monitoring Extension Cord Using Power Line Transmission Technology." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/3zjsnm.

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碩士<br>中華大學<br>電機工程學系<br>106<br>Modern people are paying more and more attention to the efficient use of energy due to changes in the environment, and governments are constantly promoting new energy policies. With the rise of smart homes, monitoring the daily power usage data can be an important basis for improving power efficiency in the future. This thesis proposed the design of an instant power monitoring extension cord using power line transmission technology. This extension cord has the advantage of utilizing the existing power line as a transmission channel, which saves the cost of wirin
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Chen, Hsien-Chung, and 陳憲忠. "Power Monitoring and Control for Electric Home Appliances Based on Power Line Communication." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/15648441788784157310.

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碩士<br>輔仁大學<br>電子工程學系<br>96<br>This paper deals with two subjects, an embedded system for home power management and an embedded remote monitoring and controlling power socket. As home power consumption tends to grow in proportion to the increase in the number of large-sized electric home appliances, an embedded system without any new additional wiring has been developed for home power management. By using Power Line Communication (PLC) technology, electric home appliances can be controlled and monitored through domestic power lines. We describe a PPCOM (PLC Power-Controlled Outlet Module) which
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CHEN, CHUN-HUNG, and 陳俊宏. "Implementation of Power Line Communication Master Controller for AC Power Energy Monitoring System." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/sc759m.

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碩士<br>中華大學<br>電機工程學系<br>107<br>Due to the rapid development of global industrialization, the problem of energy crisis has become increasingly serious. However, 98% of Taiwan’s energy is dependent on imports. At present, Taiwan’s power system continues to rely on large-scale centralized energy sources such as coal, oil and nuclear energy. In the event of a change in the international situation, the price will rise and the cost of the burden will be even greater. In the face of the lack of energy, how to effectively use electricity has become an important issue. Because the industrial energy con
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Chang, Lee-Wei, and 張立委. "Development of the Power Line Based Intelligent Security Monitoring System." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/64704469109182796025.

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碩士<br>國立雲林科技大學<br>電機工程系<br>102<br>This paper presents a set of independent, remote intelligent security monitoring system based on power line communications (PLC) technology which serves as transmission medium for the data acquired at remote ends. The developed security monitoring system is composed of multiple security modules; every one of which contains proprietary sensors, microcontroller (MCU), display (LCD), speakers and operates independently and communicates with each other through power line, either passes messages on to others or receives remote
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Lee, Meng-Shiou, and 李孟修. "Development of On-line Laser Power Monitoring and Stabilizing System." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/45794690938760907837.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>103<br>Since the laser was invented, laser has been applied in many fields such as material processing, communication, measurement, biomedical engineering, defense industries and etc. Laser power is an important parameter in laser material processing. However, since the response time of current laser power meters is too long, they cannot measure laser power accurately in a short time. To monitor the laser power in laser material processing, this study utilize a CMOS(Complementary metal-oxide-semiconductor) camera to develop an on-line laser power monitoring system.
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