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Dissertations / Theses on the topic 'Overhead medium voltage line'

Author: Grafiati

Published: 28 June 2021

Last updated: 29 July 2025

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1

Křepela, Pavel. "Dimenzování kotevních úseků venkovních vedení vn." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220674.

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Overhead lines are using in the vast majority for distribution of electricity in medium voltage level in the Czech republic. This Master’s Thesis deals with theoretical and practical knowledges to design and construction of these lines. Particularly, the mechanical properties of overheads lines and solving their calculation in accordance with applicable standards. The main task is to acquaint potentional designers in this sphere with this issue, which is recently ignored. An important benefit is the practical calculation of the actual overhead 22kV.

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2

Sochor, Tomáš. "Návrh systému chránění distribuční sítě VN." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-400597.

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The master´s thesis deals with the design of medium voltage power line protection and the calculation of reliability indicators. First, it deals with the possibilities of power system operation. Subsequently, it divides the networks according to the grounding of the transformer node and the switching elements and devices occurring in the MV distribution network are mentioned. It presents the basic classification of power line protection and its use, especially it focuses on overhead and cable MV power lines. It also discusses the reliability of the power supply and lists the basic reliability

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3

Nedoma, Jakub. "Vliv samonosného optického kabelu na mechaniku venkovního vedení VN." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442472.

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This thesis is focused on assessing the impact of retrofitting dielectric All Dielectric Self-Supporting Cable (ADSS) to existing MV overhead line. This type of optical cable is a means of future strengthening of the communication infrastructure of the distribution network. However, its mechanical properties are significantly different from the properties ACSR cable, due to which its installation can be problematic in terms of meeting the requirements of the PNE 33 3301 standard. In practical part, this work deals with the design of the ADSS installation on the existing MV line and the determi

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4

Batty, Eric Richard. "A novel transmission line monitoring method." Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326654.

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5

Slabbert, Martin J. "Evaluating the effectiveness of phase overcurrent protection on overhead medium-voltage feeders." Diss., University of Pretoria, 2014. http://hdl.handle.net/2263/45904.

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Traditionally, the effectiveness of a phase overcurrent protection philosophy has been assessed by only considering a fault level versus protection operating time graph (only selectivity). In this research, an improved method was created to evaluate different phase overcurrent protection philosophies for medium-voltage feeders. A focus was placed on reliability, sensitivity, selectivity, speed of operation, performance and minimising risk. The hypothesis stated that it is possible to develop a method that allows for the evaluation of the effectiveness of phase overcurrent protection. To

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6

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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7

Trachanas, Ilias. "Robust multiuser OFDM power line communications over medium voltage networks." Göttingen Sierke, 2009. http://d-nb.info/99843552X/04.

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8

Kolacia, Tomáš. "Měření elektrických veličin v distribučních sítích 22 kV a 0,4 kV s disperzními zdroji." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-221196.

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This thesis concerns monitoring in Middle- and Low-Voltage distribution systems penetrated by distributed generation. Monitoring itself means measuring voltages and power flows and sending relevant data to the supervisory system. The first part of the thesis describes distribution systems with differences between individual voltage levels. The following chapter is focused on consequences of high share of renewable energy sources in distribution systems. Most of the problems are partially resolved by technical conditions for connection of the new power sources. However, difficulties with voltag

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9

Dubickas, Valentinas. "On-line time domain reflectometry diagnostics of medium voltage XLPE power cables." Licentiate thesis, Stockholm : Elektroteknisk teori och konstruktion, KTH, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3921.

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10

Dubickas, Valentinas. "Development of on-line diagnostic methods for medium voltage XLPE power cables /." Stockholm : Elektro- och systemteknik, Kungliga Tekniska högskolan, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-9872.

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11

Ziari, Iman. "Planning of distribution networks for medium voltage and low voltage." Thesis, Queensland University of Technology, 2011. https://eprints.qut.edu.au/46684/1/Iman_Ziari_Thesis.pdf.

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Determination of the placement and rating of transformers and feeders are the main objective of the basic distribution network planning. The bus voltage and the feeder current are two constraints which should be maintained within their standard range. The distribution network planning is hardened when the planning area is located far from the sources of power generation and the infrastructure. This is mainly as a consequence of the voltage drop, line loss and system reliability. Long distance to supply loads causes a significant amount of voltage drop across the distribution lines. Capacitors

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12

Li, Fei. "A non-intrusive method for the determination of overhead line configuration and the derivation of system voltage waveforms." Thesis, University of Strathclyde, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.435127.

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13

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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14

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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15

Thomas, Rinu S. M. "Optimising the number and position of reclosers on a medium voltage distribution line to minimise damage on equipment." Diss., University of Pretoria, 2014. http://hdl.handle.net/2263/45905.

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The optimal placement of reclosers on overhead lines in a medium voltage distribution network is known to improve the reliability of a power system. Traditionally, recloser placement studies have not considered the effect of greater numbers of reclosers on network damage during faults or the effect of positioning on protection settings. Recloser positions that enhance the reliability of the system may not necessarily improve other problematic operational aspects, such as the damage to equipment and the risk of incorrect tripping due to the sudden increase in loading. This research seeks to pr

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16

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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17

Řehoř, Jiří. "Návrh rozvoje distribuční sítě 22 kV E.ON v zadané oblasti." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219400.

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The aim of this work is the reconstruction and development of the distribution network of DS to ensure electricity supply in the required quality to existing customers and new customers connecting to the planned industrial zone Šlapanice. The first part deals with the inclusion of a distribution network in power system, its distribution and composition. Subsequently, the work deals with the description of the management of distribution networks, cable and outdoor leadership and their parameters. It also contains guidelines for the design of high voltage networks. The end of the first part is d

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18

Aquilué, de Pedro Ricardo. "Power line communications for the electrical utility: physical layer design and channel modeling." Doctoral thesis, Universitat Ramon Llull, 2008. http://hdl.handle.net/10803/9138.

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El món de les comunicacions per la xarxa elèctrica (CXE) pot ser dividit en tres grans tipus: CXE en baix voltatge (CXE-BV), en mig voltatge (CXE-MV) i en alt voltatge (CXE-AV). En aquests últims anys, les CXE-BV han atret una gran expectació, ja que les seves capacitats han fet d'aquesta tecnologia una bona opció com alternativa pel bucle local d'accés i pel desplegament de xarxes d'àrea local, focalitzades aquestes últimes en l'entorn domèstic. A més, les CXE-BV inclouen un conjunt d'aplicacions de baixa velocitat orientades a l'operador, com la lectura automàtica de comptadors (LAC), distr

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19

Abbas, Junaid. "Logical selectivity for medium voltage overcurrent protection and its verification via co-simulation tool for the responses of the power and communication network." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/15274/.

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This thesis deals with the modelling and simulation of MV network overcurrent protection using EMTP. Transmission lines 25 Km in length for both radial and loop network with constant parameters operates at 50 Hz and 66 kV line to line voltages are simulated using EMTP. The first part of the thesis discusses the simulation of Radial network with unearthed neutral for analysing the behaviour of the fault current making the comparison with healthy feeder. Second part is to use a Radial network with compensated neutral, Petersen Coil (PC) is used for compensation of the short circuit current makin

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20

Novák, Vojtěch. "Návrh rekonstrukce distribuční sítě v dané lokalitě." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217823.

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This diploma thesis is concerned with reconstruction of distribution network in Hruba Vrbka. The diploma thesis is divided in two parts. For better understanding to this issue, the first theoretical part is shortly dedicated to the history of electrical power system, to the several types of distribution network of low voltage and high voltage and their utilization in the area, considering the reliability and the quality of delivery of the electric energy. In this thesis there is mentioned division of distribution grids according to placing of cable lines, according to voltage and according to

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21

Richter, Miroslav. "Návrh rekonstrukce distribuční sítě v zadané oblasti." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217196.

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The dissertation describes several types of low and high voltage distribution networks including their implementation in specified location with regards to the reliability and quality of electric power supply. The distributions networks are classified according to ways of cable routing, distribution line voltage levels as well as according to types of network interconnections. The high and low voltage distribution networks are further categorized based on used cable types, where, more attention is paid to insulated lines used in the Czech Republic, low voltage lines called „AES“ and „PAS“ high

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22

Chromík, Aleš. "Vyvedení výkonu z rozvodny 110/22 kV Moravany u Brna." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220293.

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The aim of this Master’s thesis is the design and reconstruction of the high voltage distribution network for the company E. ON with focus on calculation of the stabilized operation and on the planning of new cable taps from the transformer substation Moravany u Brna. The first part of the theoretical analysis of the work deals with the inclusion of the distribution network into the power system and with principles of development and construction of high voltage networks. The second part includes a general calculation of stabilized operation of the power distribution network and a familiarizat

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23

Račuch, Marek. "Analýza a návrh náhrady konkrétního venkovního vedení distribuční sítě." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-319302.

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The diploma thesis deals with the issue of the reconstruction of outdoor cables of low voltage distribution network in exchange for the cable line. It analyzes the important factors which are necessary for the preparation of the project documentation for the issue of the territorial consent. The thesis is divided into 4 main chapters. After the first chapter there is introduced chapter 2, which shows the differences between cable and outdoor cables with their advantages and disadvantages. Chapter 3 deals with the guiding principles for low-voltage cable design and the types of equipment needed

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24

Flazi, Samir. "Etude du contournement electrique des isolateurs haute tension pollues : critere d'elongation de la decharge et dynamique du phenomene." Toulouse 3, 1987. http://www.theses.fr/1987TOU30266.

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Etude de l'aspect statique du contournement, on montre experimentalement que les criteres de wilkins et hampton ne s'appliquent qu'au modele d'obenaus. Mise en evidence de l'importance du champs electrique au voisinage de la decharge. Etude detaillee de la conduction electrolytique et de son evolution pendant le contournement

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25

Ramli, Khairun N., Raed A. Abd-Alhameed, Hmeda I. Hraga, D. T. W. Liang, and Peter S. Excell. "Electromagnetic Field Interaction Between Overhead High Voltage Power Transmission Line and Buried Utility Pipeline." 2011. http://hdl.handle.net/10454/5468.

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yes<br>This work presents the development of a new approach of modelling the source excitation and the penetration of structures by continuous propagating electromagnetic (EM) plane waves. The technique incorporates the solution of time-dependent Maxwell¿s equations and the initial value problem as the structures are illuminated by the plane waves. The propagation of waves from source excitation is simulated by solving a finite-difference Maxwell's equation in the time domain. Subgridding method is used to condense the lattice at the point of interest locally for observing field distribution i

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26

Chen, Zheng, and 陳政. "Development of on line monitoring system for medium voltage electrical equipment based on wireless power energy transmission multiplexing technology." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/384m7g.

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碩士<br>元智大學<br>電機工程學系<br>106<br>In this paper, the radio transmission multiplexing technology is applied to online monitoring system to achieve the synchronous reverse transmission of radio and signal. It provides a new way for wireless sensor data transmission, and has important application value for medium voltage electrical equipment online monitoring system. First of all, a radio transmission multiplexing technology based on load modulation technology is proposed to transmit the state data of the electrical equipment on the high voltage side to the low voltage side, and then transmit the da

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27

Bakka, Maher. "Untersuchungen zum Einfluss der elektrischen Felder auf das Design von Kompakthöchstspannungsmasten aus ultrahochfestem Beton (UHPC) und zur Identifizierung der elektrischen und thermischen Parameter des UHPCs." Doctoral thesis, 2018. https://tud.qucosa.de/id/qucosa%3A31886.

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Freileitungsmaste aus herkömmlichen Beton werden bereits heute in großer Zahl in Mittelspan-nungsnetzen eingesetzt. Im Bereich der Hochspannungsfreileitungen existieren bisher international nur wenige erste Freileitungen mit Masten aus herkömmlichen Beton. Um zukünftig Elektroenergie über große Entfernungen über Trassen mit geringen Flächenbedarf transportieren zu können, sind neue Hochspannungsfreileitungen in kompakter Bauweise notwendig. Um dieses Ziel zu erfüllen, sollen die Kompaktmaste aus ultra-hochfestem Beton (UHPC) hergestellt werden. Dafür ist eine neue Sorte von UHPC mit hoher Fest

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28

Camilo, Rúben Filipe Xavier. "Projeto e modelação de linhas elétricas de média e alta tensão até 60Kv." Master's thesis, 2021. http://hdl.handle.net/10400.26/35683.

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A presente dissertação de mestrado tem como principal objetivo, o desenvolvimento de um projeto de uma linha aérea de alta tensão 60 kV, efetuando-se o estudo das metodologias, cálculos e dimensionamentos de acordo com as diretrizes da EDP-Distribuição, do regulamento de segurança de linhas elétricas de alta tensão (RSLEAT) e utilizando critérios de projetista. Foi ainda desenvolvida uma aplicação implementada em ambiente de simulação Matlab, com o intuito de sistematizar o cálculo e projetos futuros. Esta aplicação permite também efetuar o estudo do comportamento das flechas das catenárias e

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