Log in

Relevant bibliographies by topics / Voltage surge / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Voltage surge.

Dissertations / Theses on the topic 'Voltage surge'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Voltage surge.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Wilson, Robin. "Advanced surge protection devices." Thesis, Queen's University Belfast, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317489.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Spellman, Christopher Andrew. "Condition monitoring of high voltage surge arresters." Thesis, Cardiff University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.410358.

Full text

Abstract:

Industry requires that the quality of electricity supply be within certain tolerances, due to sensitive machinery or processes. If the supply is lost, then consumer industries will lose revenue as will the supplier and transmission company, and for this reason continuity and security of supply is paramount. The supplier and transmission company must ensure reliability even as the demand for supply grows, placing greater stress on the existing supply and transmission network. Since the transmission system cannot be easily expanded, due to government legislation, financial constraints and enviro

APA, Harvard, Vancouver, ISO, and other styles

3

Elayyan, H. S. B. "Protection of high voltage systems against surge voltages : New models and measurement techniques." Thesis, Cardiff University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378453.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Hayakawa, Naoki, and Hitoshi Okubo. "Partial discharge characteristics of inverter-fed motor coil samples under ac and surge voltage conditions." IEEE, 2005. http://hdl.handle.net/2237/6764.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Fuentes-Rosado, J. "Test characteristics and operation of surge arrester elements." Thesis, Cardiff University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.283894.

Full text

Abstract:

This Thesis presents the development of an empirical and simple computer model for a voltage response of a ZnO element The derived model consists of a linear capacitor and atime-varying resistance. The data necessary for the derivation of the model is collected from testing on three ZnO elements with three different linear circuits. The front times of the voltage responses of the ZnO elements range from nanoseconds to submicroseconds. The front times of the current impulses being used to produce the voltage impulses varies from nanoseconds to microseconds. The voltages having nanosecond front

APA, Harvard, Vancouver, ISO, and other styles

6

Al-Tai, M. A. "The simulation of losses and computation of surge attenuation on EHV transmission lines." Thesis, Cardiff University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383054.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Hermosillo, Worley Victor Federico. "Design of The Ohio State University high voltage laboratory." Connect to resource, 1987. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1126811509.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Okubo, Hitoshi, Fuminobu Shimizu, and Naoki Hayakawa. "Estimation of partial discharge inception voltage of magnet wires under inverter surge voltage by volume-time theory." IEEE, 2012. http://hdl.handle.net/2237/20735.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Hayakawa, Naoki, 直樹早川, Hitoshi Okubo, and 仁. 大久保. "Feature article - Lifetime Characteristics of Nanocomposite Enameled Wire Under Surge Voltage Application." IEEE, 2008. http://hdl.handle.net/2237/11172.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Hill, Kenneth Harvey. "Estimation of positive polarity switching surge flashover voltage of compact transmission lines." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0013/MQ41715.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Nakamura, Yusuke, Hiroshi Inano, Satoshi Hiroshima, Tatsuya Hirose, Masahiro Hamaguchi, and Hitoshi Okubo. "Partial Discharge Resistant Aging Mechanism of Nanocomposite Enamel Wires under Repetitive Surge Voltage Condition." IEEE, 2008. http://hdl.handle.net/2237/12130.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Fernando, Sudath Namal. "Effect of valve element characteristics, stray capacitance and voltage harmonics on surge arrester diagnostics." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ62725.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Okubo, Hitoshi, Yonghu Lu, and Naoki Hayakawa. "Partial discharge characteristics of inverter-fed motor coil samples under ac and surge voltage conditions." IEEE, 2003. http://hdl.handle.net/2237/6825.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Shimizu, F., Y. Nakamura, H. Inano, N. Hayakawa, and H. Okubo. "Partial Discharge Inception Characteristic and Charge Behavior for Magnet Wire under Repetitive Inverter Surge Voltage Condition." IEEE, 2008. http://hdl.handle.net/2237/12134.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Hayakawa, N., H. Inano, K. Inuzuka, M. Morikawa, and H. Okubo. "Partial Discharge Propagation and Degradation Characteristics of Magnet Wire for Inverter-Fed Motor under Surge Voltage Application." IEEE, 2006. http://hdl.handle.net/2237/9463.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Hayakawa, Naoki, Masato Morikawa, and Hitoshi Okubo. "Partial Discharge Inception and Propagation Characteristics of Magnet Wire for Inverter-fed Motor under Surge Voltage Application." IEEE, 2007. http://hdl.handle.net/2237/9459.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Hayakawa, Naoki, Hiroshi Inano, Yusuke Nakamura, and Hitoshi Okubo. "Time Variation of Partial Discharge Activity Leading to Breakdown of Magnet Wire under Repetitive Surge Voltage Application." IEEE, 2008. http://hdl.handle.net/2237/12126.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Montaño, Raul. "The Effects of Lightning on Low Voltage Power Networks." Doctoral thesis, Uppsala University, Division for Electricity and Lightning Research, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-6236.

Full text

Abstract:

<p>The present society is highly dependant on complex electronics systems, which have a low damage threshold level. Therefore, there is a high risk of partial or total loss of the system’s electronics when they are exposed to a thunderstorm environment. This calls for a deep understanding on the mechanism related to the interaction of lightning generated electromagnetic fields with various large distributed/scattered systems. To accurately represent the interaction of lightning electromagnetic fields with electrical networks, it is necessary to have return stroke models capable to reproduce th

APA, Harvard, Vancouver, ISO, and other styles

19

Basler, Thomas. "Ruggedness of High-Voltage IGBTs and Protection Solutions." Doctoral thesis, Universitätsbibliothek Chemnitz, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-147108.

Full text

Abstract:

IGBTs are today’s most important power-semiconductor switches in the field of medium and high power ranges. The good controllability of this device with a voltage source is advantageous. The following work investigates the IGBT at short-circuit and surge-current condition. A particular focus is put on the IGBT’s feedback on the gate-control circuit. Special modes during the short circuit are measured and explained. For example the self-turn-off mechanism during short circuit and the collector-emitter voltage-clamping capability during fast short-circuit turn-off. Measurements are done at high-

APA, Harvard, Vancouver, ISO, and other styles

20

Elmas, Erinc Evren. "Protection Of Transmission Lines Against Switching Overvoltages." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/2/12605607/index.pdf.

Full text

Abstract:

Any switching action or lightning stroke on a transmission system causes excessive of voltage, which are propagated through the equipment. The withstand capability of the electrical equipment to these overvoltages is dependent on the rate of rise, peak value and the duration of these overvoltages and are especially critical to information technology (IT) equipment. Whenever there is a probability of these overvoltages appearing across the electrical equipment, they should be limited to a safe value by the application surge arresters of the metal oxide type. However, surge arresters are expen

APA, Harvard, Vancouver, ISO, and other styles

21

Silva, Alvaro Macedo da. "Monitor para caracterização de ruídos em redes de corrente alternada." Universidade de São Paulo, 1992. http://www.teses.usp.br/teses/disponiveis/54/54132/tde-03092010-132508/.

Full text

Abstract:

Distúrbios em redes elétricas podem causar danos materiais e/ou operacionais em equipamentos eletrônicos sensíveis, em particular, sistemas em microcomputadores. Com o objetivo de registrar esses distúrbios, um monitor para redes elétricas foi desenvolvido. O equipamento desenvolvido é controlado por um microprocessador 80C86-2. Os seguintes distúrbios podem ser monitorados: desvios da freqüência nominal da rede, interferências de rádio freqüência, subtensão, sobretensão e surtos de tensão. Para minimizar o gargalo de Von Neumann, os circuitos foram projetados de forma que a maior parte das le

APA, Harvard, Vancouver, ISO, and other styles

22

Basler, Thomas. "Ruggedness of High-Voltage IGBTs and Protection Solutions." Doctoral thesis, Universitätsverlag der Technischen Universität Chemnitz, 2013. https://monarch.qucosa.de/id/qucosa%3A20075.

Full text

Abstract:

IGBTs are today’s most important power-semiconductor switches in the field of medium and high power ranges. The good controllability of this device with a voltage source is advantageous. The following work investigates the IGBT at short-circuit and surge-current condition. A particular focus is put on the IGBT’s feedback on the gate-control circuit. Special modes during the short circuit are measured and explained. For example the self-turn-off mechanism during short circuit and the collector-emitter voltage-clamping capability during fast short-circuit turn-off. Measurements are done at high

APA, Harvard, Vancouver, ISO, and other styles

23

Borsoi, Sad Sandrini. "Coordenação de dispositivos de proteção contra surtos em baixa tensão: ênfase instalações nucleares." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/3/3143/tde-27022018-082038/.

Full text

Abstract:

O trabalho apresenta uma metodologia aplicável à coordenação de dispositivos de proteção contra surtos em sistemas de corrente alternada de baixa tensão. Esta tem como base a adequação dos níveis de isolamento e imunidade dos equipamentos elétricos e eletrônicos e de energia absorvida pelos dispositivos de proteção. A principal motivação está relacionada aos critérios de segurança e confiabilidade requeridos por instalações nucleares, em que a coordenação da proteção contra surtos assume um importante papel. Uma metodologia interativa é implementada visando otimizar o processo de análise e esp

APA, Harvard, Vancouver, ISO, and other styles

24

Santos, Camila Guesine dos. "A influência da resistência de terra nos efeitos das descargas atmosféricas." Universidade Federal de Uberlândia, 2009. https://repositorio.ufu.br/handle/123456789/14417.

Full text

Abstract:

There is great concern by the power systems utilities related to disturbances that generate induced overvoltages in the power network, as they reach the consumer sensitive equipment, causing damage and losses. In consequence of this framework, the power systems utilities get large financial losses every year due to indemnity for damage to such equipments. Among the disturbances that lead to induced overvoltages are lightning. Thus, in this work it was developed the study and analysis of the lightning´s effect on loads allocated on average (11kV/15kV) and low voltage (below 600V) under the infl

APA, Harvard, Vancouver, ISO, and other styles

25

Bassi, Welson. "Estudo de surtos em redes secundárias de distribuição devido a descargas atmosféricas diretas na rede primária." Universidade de São Paulo, 1999. http://www.teses.usp.br/teses/disponiveis/3/3143/tde-10102017-100131/.

Full text

Abstract:

Este trabalho apresenta uma análise dos surtos em redes aéreas secundárias de distribuição causados por descargas atmosféricas diretas no circuito primário. Alguns trabalhos publicados sobre o fenômeno são comentados, sendo também analisados vários outros estudos relativos à modelagem de componentes. No trabalho, os principais componentes da rede foram modelados e incluídos na representação de uma topologia típica (com as linhas primária e secundária). Assim, foram considerados: transformador de distribuição, isoladores, pára-raios, cargas (consumidores) e resistências de aterramento. Os model

APA, Harvard, Vancouver, ISO, and other styles

26

Mechraoui, Ahmed. "A relaying scheme for the protection of major transmission lines during fast power swings." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319924.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Bassi, Welson. "Caracterização de equipamentos e instalações residenciais de baixa tensão aplicada ao estudo de transitórios de origem atmosférica." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/3/3143/tde-10102017-111817/.

Full text

Abstract:

Este trabalho apresenta um estudo de caracterização das impedâncias de entrada, em função da frequência, de instalações residenciais de baixa tensão e diversos equipamentos eletro-eletrônicos comumente encontrados. As respostas em frequência medidas são ajustadas e modeladas por redes RLC simples, mas efetivas, que podem ser utilizadas em qualquer programa computacional para simulações de transitórios. A faixa de frequências, até 5 MHz, permite o uso desses modelos em estudos associados a transitórios atmosféricos ou causados por chaveamentos. É importante ressaltar a existência de muito pouco

APA, Harvard, Vancouver, ISO, and other styles

28

Karlsen, Thomas. "Automation of Testing of Polymer HVDC Cables using Controlled Rapid Voltage Surges." Thesis, Norwegian University of Science and Technology, Department of Electrical Power Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-8756.

Full text

Abstract:

<p>This report aims to describe the work done in order to develop a solution for automation of failure detection and performance of rapid voltage surges. The automated system was developed with basis in the experimental circuit developed at NTNU/SINTEF. The experimental circuit relied on manually performing rapid voltage surges and detecting cable failure. Meaning that unknown variables may have been introduced due to the inequality of each grounding. The realized automation system consisted of two parts. The first part was a switch that was able to withstand the voltage applied and able to

APA, Harvard, Vancouver, ISO, and other styles

29

Němec, Ondřej. "Metodika návrhu svodičů přepětí VN pro vzduchem izolované rozváděče." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220168.

Full text

Abstract:

The purpose of this thesis is to introduce readers with design of a surge arresters in four different categories. In the first part of this thesis is described theory of overvoltage, surge arresters and testing. The second part of this thesis is focused on design of surge arresters to protect from overvoltage due switching capacitive loads. The thesis continued with design of surge arresters in medium voltage network. The next part is design of surge arresters to protect from overvoltage due switching inductive loads. The next point is protective distance of surge arresters in different lighti

APA, Harvard, Vancouver, ISO, and other styles

30

Brauer, Patrik. "High-Frequency Voltage Distribution Modelling of a Slotless PMSM from a Machine Design Perspective." Thesis, KTH, Elkraftteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-224174.

Full text

Abstract:

The introduction of inverters utilizing wide band-gap semiconductors allow for higher switching frequency and improved machine drive energy efficiency. However, inverter switching results in fast voltage surges which cause overvoltage at the stator terminals and uneven voltage distribution in the stator winding. Therefore, it is important to understand how next generation machine drives, with higher switching frequency, affect the voltage distribution. For this purpose, a lumped-parameter model capable of simulating winding interturn voltages for the wide frequency range of 0-10 MHz is develop

APA, Harvard, Vancouver, ISO, and other styles

31

Araújo, Marcel Ayres de. "Estudo de metodologia para modelagem e simulação de tensões induzidas de origem atmosférica em linhas de distribuição protegidas por para-raios de \'ZN\'O\'." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/18/18153/tde-26082013-114837/.

Full text

Abstract:

As tensões induzidas e sobretensões geradas por descarga atmosféricas diretas e indiretas são um dos principais causadores de desligamentos não programados em redes de transmissão e distribuição. Estes desligamentos comprometem o fornecimento de energia a milhares de consumidores, sobretudo em regiões com constantes variações climáticas e com características orográficas bastante diversificadas, como apresentado no território brasileiro. Desse modo, cada vez mais esses fenômenos são estudados a fim de desenvolverem-se procedimentos para proteção contra distúrbios causados por descargas atmosfér

APA, Harvard, Vancouver, ISO, and other styles

32

Frank, Petr. "Metodika zabezpečování optimální přesnosti měření v souladu s metrologickou konfirmací." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-233462.

Full text

Abstract:

This thesis deals with the evaluation of accuracy of measurement and achieving the required accuracy level. This includes global analysis of the uncertainty evaluation, the calibration interval design and the creation of confirmation system. Basis of this work is in identification of all possible problems, which may occur during evaluation of accuracy and achieving the required accuracy level. The analysis is followed by suggested solutions for identified problems. It means namely the selection of probability distribution in case of uncertainty type A, evaluation of degrees of freedom in case

APA, Harvard, Vancouver, ISO, and other styles

33

Sumangala, B. V. "Some Aspects Of Surge Voltage Distribution In Transformers With Enhanced Resolution." Thesis, 2004. http://etd.iisc.ernet.in/handle/2005/1181.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Michalopoulos, Aristidis. "Consideration of surge arresters for low voltage mains applications." Thesis, 2012. http://hdl.handle.net/10539/11310.

Full text

Abstract:

The work presented in this report details the background to surge arresters and surge protective device components, viz., spark gaps, gas discharge tubes and metal oxide varistors. Current surge protective device technologies are detailed for several of the larger surge protective device manufacturers worldwide. Tests were performed using both 8/20 μs and 10/350 μs current impulses to verify the voltage and current response of gas discharge tubes with or without series MOVs and triggering circuits. Measurements obtained from the test setup were compared against each other, sharing a tot

APA, Harvard, Vancouver, ISO, and other styles

35

Wu, Hsin-Hsien, and 吳信賢. "Analysis of Surge Impact on Low-Voltage Power Source." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/65339275716532984859.

Full text

Abstract:

碩士<br>崑山科技大學<br>電機工程研究所<br>102<br>Power system surge mainly comprises lightning and switching ones.Their accompanied transient huge energy may destroy electrical equipments.In this thesis, the characteristics of surges including lightning and switching types are introduced. Through the operation measuring data of Air Break Switch of Taipower Company, the switching surge are investigated. The ground potential rise caused by the lightning currents lead to ground will affect the low voltage power source. The transient voltage may damage the electrical devices. The EMTP/ATP program is adopted to s

APA, Harvard, Vancouver, ISO, and other styles

36

Lin, Li-Min, and 林立敏. "Study on Fundamental Characteristics and Switching Voltage Surge Suppression of DC/DC Voltage Converters." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/17361303154423938852.

Full text

Abstract:

碩士<br>國立聯合大學<br>電機工程學系碩士班<br>99<br>The main purpose of this thesis is to study the basic characteristics of DC converters, power components within the parasitic elements of the estimated value and applications, switching surge voltage generation and improvement, and zero current switching technology. First, explore the basic characteristics of DC converters for comparative analysis in theory, simulation, and measurement data. Secondly, explore switch voltage oscillation waveform of the generated and improvement , and through the oscillation waveform to estimate the switching elements of the pa

APA, Harvard, Vancouver, ISO, and other styles

37

Huang, Chun-Ta, and 黃俊達. "Analysis of Overvoltage on Low-Voltage Side Caused by Ground Surge." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/g3rbyw.

Full text

Abstract:

碩士<br>崑山科技大學<br>電機工程研究所<br>93<br>Surge can influence the electric equipment through the transmission line of power or the earthed route. Its effecting level and range depend on both the invaded route and the energy size. The most serious damage will occur when the surge pours into the circuit of power system directly, since the serious harm of electric equipment can be caused by the enormous energy that circulates hither and thither in the circuit. Because the low-voltage facilities are the equipments that most close to the personnel, the endurance ability of surge striking influences the pers

APA, Harvard, Vancouver, ISO, and other styles

38

Xu, Hao-xiang, and 許皓翔. "Study of Lightning Surge Voltage Distribution on RC Structure Building Grounding." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/36m863.

Full text

Abstract:

碩士<br>國立臺灣科技大學<br>電機工程系<br>99<br>The lightning strikes are natural phenomenon has been a major concern in every Countries. How to lower the surge voltage and complete lightning protection is the first consideration during building design and implementation. The lightning-protection rod of the building is grounded directly through the grounding conductor. It is seldom to ground the lightning rod via the steel structure of the building. The thesis discussed the difference between direct-grounded method and building-steel-structure-grounded method. The construction is simulated with an eight flo

APA, Harvard, Vancouver, ISO, and other styles

39

LUO, QING-SHU, and 羅慶蜀. "A study on surge absorbing capacity of medium-voltage zinc oxide varistor." Thesis, 1991. http://ndltd.ncl.edu.tw/handle/16144710856871866225.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

CHO, LIANG-YI, and 卓良憶. "Measurements of Surge Protection Device on Low Voltage Circuit and Protection Performance Evaluation." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/26kgma.

Full text

Abstract:

碩士<br>國立臺北科技大學<br>電機工程系<br>107<br>At present, domestic low-voltage (220, 110 V) users rarely install surge protection devices (SPD), which often cause equipment damage and power outage due to lightning strikes. In order to reduce the impact of lightning strikes on users, more and more low voltage circuits are generally designed to install SPD for surge protection, but how the effect is to be verified. This paper discusses the protection effect of SPD installed in low-voltage circuits by means of surge test. In this paper, the test circuit is first designed, and the surge generator is used to a

APA, Harvard, Vancouver, ISO, and other styles

41

Wang, Chi-Hau, and 王啟豪. "Design and Realization of Surge Voltage Suppression Compensator for PV and Fuel Cell Hybrid Power System." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/49070221183750630115.

Full text

Abstract:

碩士<br>中原大學<br>電機工程研究所<br>101<br>This thesis presents a hybrid photovoltaic (PV) and fuel cell (FC) system to provide constant power demand for load based on complementary energy supply ideas, and reduce the voltage surge at DC bus. The proposed hybrid power system uses a boost current source converter (BCC) to capture PV energy, while the Z-Source Converter (ZCS) is used as the fuel cell energy conversion. Using Z-Source Converter aims to replace the battery widely connected at DC bus for regulation. If the PV energy disappears, Z-Source converter is required to bear all the energy required at

APA, Harvard, Vancouver, ISO, and other styles

42

Chen, Chun-Chi, and 陳俊吉. "Evaluation of Switching Surge Risks on the Low Voltage Auxiliary System of Frequent Start-Stop Plant." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/05494095011969248822.

Full text

Abstract:

博士<br>中原大學<br>電機工程研究所<br>102<br>In this dissertation, the switching surge risks on the low-voltage auxiliary system of frequent start-stop plant are evaluated based on switching surge simulations, field measurements, and the investigation of a severe damage case. First of all, modeling and switching surge voltage simulations by the Alternative Transient Program (ATP) of the Electromagnetic Transient Program for an actual plant are presented, where the switching surge voltages produced by the operation of load switches and source breakers of the low-voltage auxiliary system are simulated with r

APA, Harvard, Vancouver, ISO, and other styles

43

Reddy, Ravichandran. "The use of an auxiliary spark gap placed across the surge arrester of a medium voltage transformer." Thesis, 2007. http://hdl.handle.net/10413/1633.

Full text

Abstract:

A possible lower cost alternative to medium voltage line arresters and parallel-connected surge arresters is the use of parallel-connected spark gaps across a metal oxide surge arrester. The function of the spark gap is to protect the transformer when the surge arrester fails. Clearly the breakdown voltage characteristics of such a gap need to be carefully co-ordinated with the transformer insulation and those of the arrester. Eskom (Electricity Supply Commission of South Africa) is the national electrical utility that provides the generation, transmission and distribution of electricity in So

APA, Harvard, Vancouver, ISO, and other styles

44

Fan, Chen-Hgng, and 范振航. "Lightning and Switching Surge Characteristics Anclysis for Secondary Substations and Feeders and Affection Assessments for Low Voltage Customers." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/chr2yd.

Full text

Abstract:

碩士<br>國立臺北科技大學<br>電機工程系研究所<br>102<br>Nowadays, most of home-use electrical appliances are electronic products which usually have the advantages of multifunction and small size, but their capability to withstand the impacts of lightning and switching surges is usually low. Consequently,damage cases in the low voltage customers due to lightning and switching surges from feeder are frequent. In the thesis, the characteristics of lightning and switching surges of secondary substation and feeders are analyzed, and the surge voltages from feeder to low voltage customers are surveyed and the affectio

APA, Harvard, Vancouver, ISO, and other styles

45

Lin, Yueh-Chin, and 林岳欽. "Analysis for Protection of Train-Stations’ Low-Voltage Device from Damage by 161kV BSS Switching Surge in TRTS." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/72954568295407349769.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Chen, Zi-Li, and 陳子立. "A Study on the Switching Surge Characteristics and Their Affections on the Grounding System in the Extra High Voltage Substation." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/81410100358163591338.

Full text

Abstract:

碩士<br>中原大學<br>電機工程研究所<br>95<br>This thesis is to study the switching surge characteristics of grounding system in the extra-high voltage (EHV) substation (E/S). The ground potential rise (GPR), ground surface potential, step and touch voltages, magnetic field and the conductor currents of ground grid due to switching surge are analyzed; and their affections are evaluated. The circuit model is first constructed by using the electromagnetic transient program/ alternative transient program (EMTP/ATP) in which the buses, main transformers and grounding system of E/S and the primary EHV source and

APA, Harvard, Vancouver, ISO, and other styles

47

Chou, Kuo-Yan, and 鄒國彥. "A Study on the Switching Surge Characteristics and Their Affections on the Grounding System in the Underground Extral-High Voltage Substation." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/ph2442.

Full text

Abstract:

碩士<br>國立臺北科技大學<br>電機工程系研究所<br>96<br>Underground Extra High Voltage (EHV) substation installs various electrical equipments on different floors to form a cubic structure. However, the land area is too limited to construct large grounding grid, so many grounding bus and grounding conductors must be widely installed. The grounding system performance will depends on the grounding buses, grounding conductors and the characteristics of ground gird altogether, where the switch surge characteristics bring rather significant influence on the safety of personnel and various facilities in substation, an

APA, Harvard, Vancouver, ISO, and other styles

48

Ray, Ayonam. "Developmental Studies On Separately Cooled Sheet Wound Gas Insulated Transformer - Modeling Of Electromagnetic Forces, Surge Voltage And Steady State Current Distribution In The Windings." Thesis, 1996. http://etd.iisc.ernet.in/handle/2005/1757.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

"Insulation Coordination of Solid State Devices Connected Directly to the Electric Power Distribution System." Master's thesis, 2017. http://hdl.handle.net/2286/R.I.45531.

Full text

Abstract:

abstract: With the penetration of distributed renewable energy and the development of semiconductor technology, power electronic devices could be utilized to interface re- newable energy generation and the distribution power grid. However, when directly connected to the power grid, the semiconductors inside the power electronic devices could be vulnerable to the power system transient, especially to lightning strikes. The work of this research focuses on the insulation coordination of power elec- tronic devices connected directly to the power distribution system. The Solid State Transfo

APA, Harvard, Vancouver, ISO, and other styles

50

Νασιοπούλου, Χρυσούλα. "Δυναμική συμπεριφορά απαγωγέων υπερτάσεων". Thesis, 2011. http://nemertes.lis.upatras.gr/jspui/handle/10889/4382.

Full text

Abstract:

Το θέμα της παρούσας διπλωματικής εργασίας είναι η μελέτη της συμπεριφοράς απαγωγέων υπερτάσεων (SPD), όταν αυτοί αποτελούν μέρος του εσωτερικού συστήματος αντικεραυνικής προστασίας για μια οικιακή εγκατάσταση. Αρχικά γίνεται μια αναφορά στα αίτια δημιουργίας κρουστικών υπερτάσεων στο δίκτυο διανομής, ενώ στη συνέχεια δίνεται έμφαση στις υπερτάσεις που προκαλούνται από άμεσα ή έμμεσα κεραυνικά πλήγματα στο σύστημα. Στα πλαίσια της μελέτης δημιουργήθηκε ένα μοντέλο προσομοίωσης που αναπαριστά ένα δίκτυο χαμηλής τάσης TN-C-S με δύο πανομοιότυπους οικιακούς καταναλωτές, όσον αφορά τη δομή της εσω

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!