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Dissertations / Theses on the topic 'Ultra high voltage and extra high voltage'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Wang, Wenlu. "Eco-conception des systèmes de transmission de l'énergie électrique." Phd thesis, Ecole Centrale de Lyon, 2011. http://tel.archives-ouvertes.fr/tel-00627890.

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Les demandes pour la préservation de l'environnement ainsi que les préoccupations pour un développement durable, ont augmenté considérablement ces dernières décennies à travers le monde. Ce souci environnemental est également présent dans l'industrie électrique et les approches d'éco-conception sont de plus en plus présentes dans la conception et la réalisation des composants et systèmes de transmission et de distribution (T & D) de l'énergie électrique. Cette étude est menée, dans le but d'analyser les impacts des systèmes de transmission de l'énergie électrique sur l'environnement, de locali

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2

Hall, William Bewick. "Reduced energy requirement study for extra high voltage circuit breakers." Thesis, University of Sunderland, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268097.

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3

Zhang, Qiuhong. "Carbon based passivation layers for ultra-high voltage Si devices." Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609703.

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4

Crnojacki, Zorica. "Extra high voltage transmission corridor siting : technical, public, institutional and regulatory considerations /." Diss., This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-10032007-171749/.

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5

Maric, Bojan. "Cache designs for reliable hybrid high and ultra-low voltage operation." Doctoral thesis, Universitat Politècnica de Catalunya, 2014. http://hdl.handle.net/10803/144563.

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Increasing demand for implementing highly-miniaturized battery-powered ultra-low-cost systems (e.g., below 1 USD) in emerging applications such as body, urban life and environment monitoring, etc., has introduced many challenges in the chip design. Such applications require high performance occasionally, but very little energy consumption during most of the time in order to extend battery lifetime. In addition, they require real-time guarantees. The most suitable technological solution for those devices consists of using hybrid processors able to operate at: (i) high voltage to provide high pe

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6

Salemi, Arash. "Silicon Carbide Technology for High- and Ultra-High-Voltage Bipolar Junction Transistors and PiN Diodes." Doctoral thesis, KTH, Integrerade komponenter och kretsar, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-197913.

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Silicon carbide (SiC) is an attractive material for high-voltage and high-temperature electronic applications owing to the wide bandgap, high critical electric field, and high thermal conductivity. High- and ultra-high-voltage silicon carbide bipolar devices, such as bipolar junction transistors (BJTs) and PiN diodes, have the advantage of a low ON-resistance due to conductivity modulation compared to unipolar devices. However, in order to be fully competitive with unipolar devices, it is important to further improve the off-state and on-state characteristics, such as breakdown voltage, leakag

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7

Coury, D. V. "A practical approach to accurate fault location on extra high voltage teed feeders." Thesis, University of Bath, 1992. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.760625.

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8

Tamilselvan, Karthi. "The Impacts of Ultra High Voltage AC line characteristics on line distance protection." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-194315.

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With the growing load demand, Ultra high Voltage (UHV) transmission lines are utilized in many countries around the world for bulk power transmission from remote locations over long distance. UHV transmission lines have typical features and it poses a challenge to the power system design with respect to protection, insulation and reactive power compensation, etc. Protection is a key issue in UHV transmission since a relay failure can interrupt and damage the power system. There are distance and differential protection schemes in the transmission line which account for security of the power sys

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9

Kawano, Kayoko. "Application of the ultra high resolution, low voltage scanning electron microscopy in the materials science." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/application-of-the-ultra-high-resolution-low-voltage-scanning-electron-microscopy-in-the-materials-science(341c7955-1da7-49be-9dd3-a3f3248bae05).html.

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The efficiency of low voltage scanning electron microscopy, which presents near-surface information, has been well known for a long time. However, it is not widely known that the high resolution capability can only be achieved when the surface reveals the original characteristics of the materials without any deterioration due contamination. Therefore, initial attention in this study is directed at clarifying the efficient use of the ultra high resolution, low voltage SEM (UHRLV SEM), (Ultra55, Zeiss). The SEM images and the selected electrons for detection, and damage that occurs through UHRVL

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10

Ackermann, Roland. "Propagation of terawatt-femtosecond laser pulses and its application to the triggering and guiding of high-voltage discharges." Phd thesis, Université Claude Bernard - Lyon I, 2006. http://tel.archives-ouvertes.fr/tel-00133125.

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La propagation d'une impulsion térawatt ultra-brµeve dans l'atmosphère peut s'accompagner du phénomène de filamentation. La lumière se trouve alors auto-guidée dans des plasmas appelés filaments dont le diamètre est de l'ordre de 100 µm et la longueur peut s'étendre jusqu'à quelques centaines de mètres. De plus, le spectre initial de l'impulsion est considérablement élargi. Ces propriétés ouvrent la possibilité d'améliorer la technique LIDAR et de contrôler la foudre. Nous avons montré que les filaments survivent à la propagation dans une turbulence forte et peuvent se développer sous une pres

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11

Caicedo, Jhon Alexander Gomez. "CMOS low-power threshold voltage monitors circuits and applications." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/144080.

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Um monitor de tensão de limiar (VT0) é um circuito que, idealmente, entrega o valor do VT0 como uma tensão na saída, para uma determinada faixa de temperatura, sem a necessidade de polarização externa, configurações paramétricas, ajuste de curvas ou qualquer cálculo subsequente. Estes circuitos podem ser usados em sensores de temperatura, referências de tensão e corrente, dosímetros de radiação e outras aplicações, uma vez que a dependência do VT0 nas condições de operação é um aspecto bem modelado. Além disso, estes circuitos podem ser utilizados para monitoramento de processos de fabricação

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12

Hou, Dongbin. "Very High Frequency Integrated POL for CPUs." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/77608.

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Point-of-load (POL) converters are used extensively in IT products. Every piece of the integrated circuit (IC) is powered by a point-of-load (POL) converter, where the proximity of the power supply to the load is very critical in terms of transient performance and efficiency. A compact POL converter with high power density is desired because of current trends toward reducing the size and increasing functionalities of all forms of IT products and portable electronics. To improve the power density, a 3D integrated POL module has been successfully demonstrated at the Center for Power Electronic S

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13

Hirmer, Katrin [Verfasser], Klaus [Akademischer Betreuer] Hofmann, and Dirk [Akademischer Betreuer] Killat. "Interference-Aware Integration of Mixed-Signal Designs and Ultra High Voltage Pulse Generators for System-on-Chips / Katrin Hirmer ; Klaus Hofmann, Dirk Killat." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2019. http://d-nb.info/1199006408/34.

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Hirmer, Katrin [Verfasser], Klaus Akademischer Betreuer] Hofmann, and Dirk [Akademischer Betreuer] [Killat. "Interference-Aware Integration of Mixed-Signal Designs and Ultra High Voltage Pulse Generators for System-on-Chips / Katrin Hirmer ; Klaus Hofmann, Dirk Killat." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2019. http://d-nb.info/1199006408/34.

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15

Iannini, Roberto Fonseca. "Desenvolvimento de um sistema de aquisição de dados e de controle para a realização de ensaios de emissão eletrônica na câmara de ultra alto vácuo." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/261182.

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Orientador: Vitor Baranauskas<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação<br>Made available in DSpace on 2018-08-21T02:41:28Z (GMT). No. of bitstreams: 1 Iannini_RobertoFonseca_D.pdf: 3201679 bytes, checksum: cd82a05d0dedaa3ecc2f0ca77550b58d (MD5) Previous issue date: 2012<br>Resumo: Foi projetado e desenvolvido um sistema de aquisição de dados e controle para viabilizar, de forma automatizada, a caracterização de emissividade eletrônica em catodos frios, por meio da utilização da câmara de ultra alto vácuo do Departamento de Semi

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16

Silveira, Patrícia Oliveira da. "Planejamento de sistemas de transmissão em área com fonte de geração intermitente, apoiado no uso de tecnologias avançadas." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/3/3143/tde-27062017-105858/.

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O Brasil é um país de dimensões continentais, onde existe uma considerável distância entre a geração e os principais centros de consumo. Dessa forma, o estudo e desenvolvimento de novas tecnologias de transmissão a longas distâncias é de fundamental importância para o desenvolvimento do país. A solução mais utilizada atualmente é a transmissão em corrente alternada. Entretanto a transmissão em corrente continua também é uma solução viável para longas distâncias. O sistema brasileiro é composto principalmente por linhas 500 kV em corrente alternada (também há 230; 345; 440 e 750 kV), bem como e

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17

Elahipanah, Hossein. "Design Optimization and Realization of 4H-SiC Bipolar Junction Transistors." Doctoral thesis, KTH, Elektronik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-211659.

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4H-SiC-based bipolar junction transistors (BJTs) are attractive devices for high-voltage and high-temperature operations due to their high current capability, low specific on-resistance, and process simplicity. To extend the potential of SiC BJTs to power electronic industrial applications, it is essential to realize high-efficient devices with high-current and low-loss by a reliable and wafer-scale fabrication process. In this thesis, we focus on the improvement of the 4H-SiC BJT performance, including the device optimization and process development. To optimize the 4H-SiC BJT design, a compr

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18

Fares, Adnan. "Development of advanced architectures of power controllers dedicated to Ultra High Switching Frequency DC to DC converters." Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS195.

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La sophistication grandissante des dispositifs intelligents ultra-portatifs, tels que les smartphones ou les tablettes,crée un besoin d'amélioration des performances des organes de conversion de puissance.La tendance des technologies d'acheminement de puissance évolue progressivement vers une fréquence plus élevée, une meilleure densité d'intégration et une plus grande flexibilité dans les schémas d'asservissement. La modulation dynamique de tension est utilisée dans les circuits intégrés de gestion de puissances(DVS PMICs)des transmetteurs RF alors que la modulation DVFS est utilisée dans les

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19

Böhm, Christine [Verfasser], and Klaus [Akademischer Betreuer] Blaum. "High-precision mass measurements of neutron-deficient Tl isotopes at ISOLTRAP and the development of an ultra-stable voltage source for the PENTATRAP experiment / Christine Böhm ; Betreuer: Klaus Blaum." Heidelberg : Universitätsbibliothek Heidelberg, 2015. http://d-nb.info/1180301978/34.

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20

Inanlou, Farzad Michael-David. "Innovative transceiver approaches for low-power near-field and far-field applications." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/52245.

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Wireless operation, near-field or far-field, is a core functionality of any mobile or autonomous system. These systems are battery operated or most often utilize energy scavenging as a means of power generation. Limited access to power, expected long and uninterrupted operation, and constrained physical parameters (e.g. weight and size), which limit overall power harvesting capabilities, are factors that outline the importance for innovative low-power approaches and designs in advanced low-power wireless applications. Low-power approaches become especially important for the wireless transceive

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21

Jireček, Martin. "Flíčková anténa s budicí štěrbinou." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219166.

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Systems with extreme bandwidth are part of advanced modern systems at radio high capacitive communication. Originally this technology was intended for radar scan. Thanks to wide frequency band had radar possibility „ see" a behind crimp, e.g. behind woody partitions etc . To his noise immunity, fail safe tapping plus small wattage heftiness began use for datal systŽm function. If is elementary antenna compound from coaxial probe and shorting outlet, it is possible use to actuating separate narrow slot placed in the middle of incandescent dabs. Impedance and radiating characteristics convention

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22

Lacombe, Karine. "Réalisation de grands plans de détection pixélisés pour l'astronomie gamma : contribution à l'étude et à la réalisation du module XRDPIX pour l'instrument ECLAIRs sur la mission spatiale SVOM." Thesis, Toulouse 3, 2019. http://www.theses.fr/2019TOU30326.

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ECLAIRs, l'imageur à rayons X dur de la mission sino-française SVOM, est dédié à la détection et à la localisation en quasi temps réel de sources transitoires cosmiques dans la plage d'énergie allant de 4 à 150 keV. Cet instrument est une caméra grand champ, munie d'un plan de détection pavé de 6400 détecteurs Schottky CdTe, qui permet de créer des images du ciel en rayons X durs grâce à un système de localisation appelé " masque codé ". Les travaux exposés dans ce manuscrit détaillent la conception, la réalisation et la mesure des performances de modules hybrides de 32 détecteurs lus par un A

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23

Chatterjee, Sreenita. "Dimensioning Of Corona Control Rings For EHV/UHV Line Hardware And Substations." Thesis, 2012. https://etd.iisc.ac.in/handle/2005/2446.

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High voltage (EHV and UHV) transmission facilitates transfer of large amount of power over long distances. However, due to the inherent geometry, the line and substation hardware of EHV and UHV class generate high electric fields, which results in local ionisation of air called corona discharges. Apart from producing audible noise in the form of frying or hissing sound, corona produces significant electromagnetic interferences in the radio range. The limit for this corona generated Radio Interference (RI) has been stipulated by international standards, which are strictly to be followed. In l

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Chatterjee, Sreenita. "Dimensioning Of Corona Control Rings For EHV/UHV Line Hardware And Substations." Thesis, 2012. http://etd.iisc.ernet.in/handle/2005/2446.

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High voltage (EHV and UHV) transmission facilitates transfer of large amount of power over long distances. However, due to the inherent geometry, the line and substation hardware of EHV and UHV class generate high electric fields, which results in local ionisation of air called corona discharges. Apart from producing audible noise in the form of frying or hissing sound, corona produces significant electromagnetic interferences in the radio range. The limit for this corona generated Radio Interference (RI) has been stipulated by international standards, which are strictly to be followed. In li

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Ravishankar, Kurre. "Transient Analysis of EHV/UHV Transmission Systems for Improved Protection Schemes." Thesis, 2012. http://etd.iisc.ac.in/handle/2005/3248.

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Ever increasing demand for electricity, exploitation of large hydro and nuclear power at remote location has led to power evacuation by long EHV/UHV transmission systems. This thesis concentrates on transient analysis of EHV/UHV transmission systems for improved planning and protection. In this thesis, the uncontrolled and controlled switching methods to limit the switching surges during energization of 765kV and 1200k VUHV transmission lines are studied. The switching surge over voltages during the energization of series compensated line are compared with uncompensated line. A Generalized Ele

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Ravishankar, Kurre. "Transient Analysis of EHV/UHV Transmission Systems for Improved Protection Schemes." Thesis, 2012. http://hdl.handle.net/2005/3248.

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Ever increasing demand for electricity, exploitation of large hydro and nuclear power at remote location has led to power evacuation by long EHV/UHV transmission systems. This thesis concentrates on transient analysis of EHV/UHV transmission systems for improved planning and protection. In this thesis, the uncontrolled and controlled switching methods to limit the switching surges during energization of 765kV and 1200k VUHV transmission lines are studied. The switching surge over voltages during the energization of series compensated line are compared with uncompensated line. A Generalized Ele

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27

Sun, Chi-Hsiang, and 孫啟翔. "LOAD CHARACTERISTICS ANALYSIS OF EXTRA HIGH VOLTAGE SUBSTATION." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/09977563782159813517.

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碩士<br>大同大學<br>電機工程學系(所)<br>94<br>This thesis proposes a series of methods for analyzing load variations and uses the measured data from substations as an analytic case. It expects to obtain the characteristics of load variations during different time periods, which is taken as base to establish the index of frequency regulation costs allocation. Firstly, moving average method is applied to get the load trend and analyze load variation quantity; simultaneously the load characteristics of each substation during every time period are determined. Subsequently the frequent degree of load variatio

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Chen, Ruei-Hao, and 陳瑞豪. "Ferroresonance Analysis of Extra High Voltage Power Plant." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/z92sex.

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碩士<br>國立臺北科技大學<br>電機工程研究所<br>105<br>In this dissertation, through the simulation found that when the power plant maintence, if improper operation, the power plant will have the possible of ferroresonance. FR is due to the non-linear inductance element in the power system into the saturation state and the capacitance resonance. The main reason is the general operation of the transformer are quite close to the saturation zone, so the system have abnormal phenomenon, even the surge or harmonics will possible to make the transformer into the saturation zone. This dissertation use an extra high vol

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29

WEI, WEN-JIE, and 魏文傑. "The ultra high voltage device design and circuit implement." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/p7u6y5.

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碩士<br>萬能科技大學<br>工程科技研究所<br>99<br>This paper is for the purpose of designing an ultrahigh voltage lateral double-diffused metal oxide semiconductor field effect transistor (LDMOSFET). We add a P-top field ring and the different types of interdigitized polysilicon-metal floating field layer in the drift region to effectively reduce the surface field and further enhance the device breakdown voltage. Through the computer simulation, we figure out the breakdown voltage of the device and the optimized process parameters and layout structures. We implement the test device through the 0.8 micron 2P2M

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Chang, Yi Fong, and 張怡楓. "A Novel Device for 800V Ultra-High Voltage LDMOS." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/17216999911672700505.

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碩士<br>亞洲大學<br>資訊工程學系碩士班<br>97<br>In recent years, because of flat-panel displays and communications products replacing old ones, making the demand for power components increased significantly. Circuit in order to conform to the trend of integrated, power components must be responsible for two major duties, one to carry the high operating voltage, and the other with a smaller on-resistance. The paper first proposed a use of 2-D (Poisson's) equation analytical method to predict the voltage and electric field distribution of trends and for JI (Junction Isolation) Thick SOI with different structur

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Hsiao, Ming-Che, and 蕭敏哲. "600V Multi RESURF Ultra High Voltage LDMOS Device Design." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/4ysafy.

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lien, yu-fong, and 連裕豐. "Design of Extra High Voltage Underground Power Systems in Tunnel." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/61273151146292753081.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>93<br>This thesis explores the various lay-out schemes for the extra-high-voltage underground cables in tunnel. Since massive heat will be generated by energy losses during power transmission of power cables, it is crucial to determine the ampacity of continuous current rating of power cables for safe system operation. In view of this, this thesis aims to develop an application program for underground power systems with different topological configurations which can calculate the heat energy loss, energy transfer ability of the power cables, and the induction voltage

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Chen, Teng-Chia, and 陳登嘉. "Electrical Characteristics of GIS Enclosures of Extra-High Voltage Substation." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/99mf98.

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碩士<br>崑山科技大學<br>電機工程研究所<br>96<br>The electrical power of Tainan Science-Based Park is mainly supplied by the TPC’s Nan-Ke Extra High Voltage Substation. The power quality directly influences the production and revenue of the high-tech anufacturer. Nan-Ke Extra High Voltage Substation is a GIS (Gas-Insulated Switchgear) type indoor substation. The electrical characteristics at the junction of the GIS and power cables directly affects the power quality. In this thesis, the components of GIS are introduced first, then the transient phenomenon is analyzed. The ATP software is used to simulate the

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34

"High performance ultra-low voltage continuous-time delta-sigma modulators." Thesis, 2011. http://library.cuhk.edu.hk/record=b6075115.

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Continuous-time (CT) Delta-Sigma Modulators (DSMs) have re-gained popularity recently for oversampling analog-to-digital conversion, because they are more suitable for low supply voltage implementation than their discrete-time (DT) counterparts, among other reasons. To the state of art at the low voltage front, a CT O.5-V audio-band DSM with a return-to-open feedback digital-to-analog converter has been reported. However, the O.5-V CT DSM has a limited performance of 74-dB SNDR due to clock jitters and other factors caused by the ultralow supply.<br>Finally, a O.5-V 2-1 cascaded CT DSM with SC

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SINGH, ABHISHEK KUMAR. "OPTIMUM COMPENSATION SCHEME FOR ULTRA HIGH VOLTAGE LONG TRANSMISSION LINE." Thesis, 2011. http://dspace.dtu.ac.in:8080/jspui/handle/repository/19701.

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Turnip, S. "Analysis of single pole auto reclosure in extra high voltage systems." Thesis, 1995. https://eprints.utas.edu.au/22171/1/whole_TurnipSahala1995_thesis.pdf.

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The successful single pole auto reclosure (SPAR) operation in the EHV system increases system stability, improves system reliability, reduces reclosing overvoltages and torsional impacts on generator shafts. The success rate of a SPAR operation is dependent on the time required to extinguish the secondary arc and to rebuild the dielectric strength of the de-ionized arc path. The extinction time of the secondary arc depends on the magnitude of the secondary arc current and the recovery voltage. Without a compensation scheme, a SPAR operation will be unsuccessful in a long EHV transmission line.

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Yang, Shun-Tian, and 楊順天. "Applications of FMEA and FTA in an extra high voltage cable process." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/54047243020935227425.

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碩士<br>國立雲林科技大學<br>工業工程與管理系<br>103<br>Under the influence of the globalization and the knowledge economy era, Taiwan electric wire and cable industry have to face the impact of the industry itself. The manufacturers need to strengthen internal management constitution to increase competitiveness. The advantage of Taiwan is that there is a wealth of manufacturing experience to utilize the past experience, share it specifically and save it accumulation. In today's competitive environment, we need to supply well commodities to satisfy the customer needs fast, therefore, we need to emphasize on pre

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Hsiao, Sheng-Wen, and 蕭勝文. "The Lightning Characteristics Simulation and Analysis for Extra High Voltage Underground Cable." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/77541003746113128411.

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碩士<br>國立高雄應用科技大學<br>電機工程系博碩士班<br>96<br>The power quality of overhead transmission line is easily affected by external factors such as natural disaster (typhoon, earthquake, floods, windstorm, snowstorm and lightning), and man-made factor (project operation, festival color ribbon, etc.) as well as other factor (such as plant height, bird nest, climbing of snake and animal, etc.). In recent years, in order to enhance the electricity quality and to reduce the people’s contend, transmission line is designed with underground approach for urban and science areas. Since the voltage level of cable is

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CHENG, MING-FANG, and 鄭茗方. "Grounding Safety Analysis of Indoor Extra High Voltage Substations Under Raft Foundation." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/p9s8ak.

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碩士<br>國立高雄科技大學<br>電機工程系<br>107<br>Substation is a very important part of Power Supply System. To ensure of the quality of the supplied power and safety of the staff member, it is necessary to have a well-designed grounding system. If the actual mesh voltage and step voltage generated by the electrical substation is lower than the permissible touch and step voltage, and tolerable shock duration is higher than the fault clearing time, it means the grounding system of the electrical substation is safe. This thesis is based on the following standard and software to run the calculation and simulati

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Devadiga, Anurag A. "Lightning Shielding Failure Analysis of Ultra High Voltage Power Transmission Lines." Thesis, 2015. http://etd.iisc.ac.in/handle/2005/3973.

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In India, the natural energy resources (thermal and hydro) are unevenly distributed and are mostly present in the remote areas and the load centers are distributed across various regions of the country. Therefore high voltage lines have become necessary for the devel-opment of large interconnected power networks and for the reliable and economic transfer of power. The increase in electric power demand due to the electric load growth has lead to the expansion of the transmission systems to ultra high voltage levels. Presently, Ultra High Voltage (UHV) power transmission lines are being built to

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Devadiga, Anurag A. "Lightning Shielding Failure Analysis of Ultra High Voltage Power Transmission Lines." Thesis, 2015. http://etd.iisc.ernet.in/2005/3973.

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In India, the natural energy resources (thermal and hydro) are unevenly distributed and are mostly present in the remote areas and the load centers are distributed across various regions of the country. Therefore high voltage lines have become necessary for the devel-opment of large interconnected power networks and for the reliable and economic transfer of power. The increase in electric power demand due to the electric load growth has lead to the expansion of the transmission systems to ultra high voltage levels. Presently, Ultra High Voltage (UHV) power transmission lines are being built to

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Chen, Chin-Feng, and 陳慶豐. "Airflow Cooling Simulation and Analysis for Extra- high Voltage Cable in Underground Tunnel." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/92n5uw.

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碩士<br>國立臺北科技大學<br>冷凍空調工程系所<br>93<br>Electricity supply has become a significant issue as the population and industries grow massively in metropolitan areas and industrial parks over the past decades. It also plays a greater role as for high-tech industries especially in the semiconductor and Electro-Optical fields. Traditionally, we have elevated and underground power lines to provide electricity. As the increases of the public and environmental awareness, more elevated power lines goes underground. However, underground power lines encountering unavoidably problems in cable capacities and stab

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Kumar, Rahul, and Rahul Kumar. "A Novel 800 Volts Ultra High Voltage Superjunction MOSFET using Sidewall Implantation." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/96387120422175138256.

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碩士<br>亞洲大學<br>資訊工程學系碩士班<br>101<br>In the evolution of power industry, power devices with the property of high blocking capability but lower specific on-resistance are required in many applications of modern power electronics. Based on the extensive Superjunction (SJ) theory with stacked p and n columns in drift region, SJ devices have been recognized as advanced power devices that can meet the requirements. The main methods of realizing SJ devices are multi-epitaxy and deep trench technology. Unfortunately, the applications of SJ devices are commercially restricted by the complicated fabricati

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Lin, Zong-Ru, and 林宗儒. "Ultra-High Breakdown Voltage Design Thin Film Transistors by Asymmetric Multi-gates." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/71526293566224201560.

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碩士<br>逢甲大學<br>電子工程學系<br>101<br>Polycrystalline silicon thin film transistors (poly-Si TFTs) have been widely applied in electronic products such as active-matrix liquid crystal displays (AMLCD) systems, pixel switches, and peripheral driver circuits due to their high field-effect mobility compared with amorphous silicon (a-Si) TFTs. This device is a promising candidate to be used in the display system-on-panel (SOP) as a controller and memory. However, this device experiences a high electric field near the channel/drain junction region. The high electric field is the major cause of impact ioni

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YAN, XIN-ZHI, and 顏信志. "Development of decision procedure for the selection of technological alternatives:Taipower extra high voltage selection." Thesis, 1987. http://ndltd.ncl.edu.tw/handle/70685878551516617817.

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LIN, CHEN-TONE, and 林建同. "Application of Electromagnetic Transients Program to Analyze Arrester Installation In Extra High Voltage Substation." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/48q499.

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碩士<br>國立臺南大學<br>電機工程學系碩博士班<br>106<br>One of critical concerns in the operation of lightning strikes is the surge characteristics. It is known that the lightning strikes may cause the power system faults and pose hazards to utility personnel even. Hence, in this thesis, a power system model, including of a 161 kV transmission line and transformer, based on the Alternative Transient Program- Electromagnetic Transient Program (ATP-EMTP) is developed to analysis the event of lightning strikes, different test cases have been carried out for the study considered. In the study, lightning arresters ar

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Wu, Hung-Shuo, and 吳鴻碩. "Optimal Sensor Placement for Extra High Voltage Transmission Lines Based on Dynamic Thermal Rating." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/242gby.

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碩士<br>國立臺灣大學<br>生物產業機電工程學研究所<br>106<br>With the increasing demand for electricity, the load on the long-distance extra high voltage (EHV) power grid is getting heavier. However, the construction of a new power grid is time-consuming and costly. In recent years, dynamic thermal rating (DTR) technology is considered to be able to solve this problem. DTR is an effective tool for assisting smart grids in planning and making decisions. It uses real-time weather information to estimate the conductor temperature and ampacity of the overhead transmission lines. Through these crucial information, trans

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Chen, Yu-Chun, and 陳俞均. "Predicting Construction Cost For Extra-High Voltage Transmission Tower Foundations Using Support Vector Regression." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/66sw98.

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碩士<br>國立中央大學<br>營建管理研究所在職專班<br>107<br>Energy demands in Taiwan have dramatically increased due to rapid industrial development in the recent decade. Renewable energy is playing an important role in filling out the demands and requires more Extra-High Voltage (EHV) transmission towers to support Taiwan electrical transmission network. A prompt, accurate, and automatic cost estimation tool is desired to replace the current manual estimation. The study objective is to develop a tool using support vector regression (SVR) that can predict construction cost for EHV transmission tower projects. L

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陳憲志. "Ultra High Breakdown Voltage With Resistive Multi-Gates Poly-Si Thin Film Transistor." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/18276825792669586001.

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Wan, Jie-Jyun, and 萬倢君. "Optimal Sensor Placement for Conductor Temperature Estimation of Overhead Extra-High Voltage Power Transmission Lines." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/00965799148018975076.

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碩士<br>國立臺灣大學<br>生物產業機電工程學研究所<br>102<br>Dynamic thermal rating (DTR) technique is an effective and proper method to manage transmission lines in power system. Dynamic thermal rating utilizes on-line thermal sensors to monitor the operating temperature of overhead transmission lines, and calculates the ampacity margin of the transmission lines. The power transmission efficiency could be improved while under the safe condition. However, deploying a large number of thermal sensors may not be a viable option, because of high equipment costs and increasing the structural complexity of the power grid

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