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Dissertations / Theses on the topic 'Shunt reactor'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Ma, Zhao. "Reactor current interruption by gas insulated switchgear." Thesis, Staffordshire University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.481658.

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2

Ramli, Mohd Shamir. "Investigation of circuit breaker switching transients for shunt reactors and shunt capacitors." Thesis, Queensland University of Technology, 2008. https://eprints.qut.edu.au/17822/1/Mohd_Shamir_Ramli_Thesis.pdf.

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Switching of shunt reactors and capacitor banks is known to cause a very high rate of rise of transient recovery voltage across the circuit breaker contacts. With improvements in circuit breaker technology, modern SF6 puffer circuits have been designed with less interrupter per pole than previous generations of SF6 circuit breakers. This has caused modern circuit breakers to operate with higher voltage stress in the dielectric recovery region after current interruption. Catastrophic failures of modern SF6 circuit breakers have been reported during shunt reactor and capacitor bank de-energisati

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3

Ramli, Mohd Shamir. "Investigation of circuit breaker switching transients for shunt reactors and shunt capacitors." Queensland University of Technology, 2008. http://eprints.qut.edu.au/17822/.

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Switching of shunt reactors and capacitor banks is known to cause a very high rate of rise of transient recovery voltage across the circuit breaker contacts. With improvements in circuit breaker technology, modern SF6 puffer circuits have been designed with less interrupter per pole than previous generations of SF6 circuit breakers. This has caused modern circuit breakers to operate with higher voltage stress in the dielectric recovery region after current interruption. Catastrophic failures of modern SF6 circuit breakers have been reported during shunt reactor and capacitor bank de-energisati

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4

Giudici, Ben Charles. "Aspects of circuit breaker performance during high voltage shunt reactor switching." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/27881.

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High voltage shunt reactor switching is a difficult circuit breaker duty. Severe reactor network insulation stresses can occur on breaker current chopping and even more so on breaker reignition. Predicting reactor switching transients is fundamental to assessing insulation concerns, and evaluating circuit breaker performance. This work demonstrates measurement of circuit breaker interruption characteristics relevant to reactor switching, and their use in computer simulation of reactor switching transients. A technique for predicting circuit breaker reactor switching performance through simula

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5

Donuk, Atilla. "Modeling And Design Of Iron-core Shunt Reactors With Discretely Distributed Air-gaps." Phd thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614923/index.pdf.

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In this research work detailed parallel and series equivalent circuits of a gapped iron-core shunt reactor with discretely distributed gaps are derived. The validity of the recommended equivalent circuits is verified by Finite Element Analysis and laboratory tests. Effects of fringing flux and discretely distributed gaps on inductance parameters and reactor losses are also investigated. Moving Strip Method for discretely distributed gapped shunt reactors is recommended. Two design procedures for shunt reactor with discretely distributed gaps are developed within the scope of this thesis. A s

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6

Horita, Marco Antonio Barbosa. "Reatores controlados por saturação para compensação de reativos." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/3/3143/tde-23122014-143032/.

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Este trabalho tem como objetivo apresentar conceitos e prover ferramentas para estudos e análises de um equipamento ainda não explorado pelo sistema elétrico brasileiro para compensação reativa de linhas de transmissão, o Reator Controlado por Saturação. Inicialmente é apresentada a teoria necessária para o entendimento do equipamento, as aplicações e sua potencial utilidade para o Brasil. Através da concepção de um circuito equivalente e da análise de modelos adaptados para o MCSR (Magnetic Controlled Shunt Reactors) de softwares de transitórios eletromagnéticos aspectos sobre seu comportamen

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7

Шешеня, І. О., та Р. С. Ніконов. "Моделювання КЗ в мережі 750 кВ з урахуванням реакторів". Thesis, Сумський державний університет, 2015. http://essuir.sumdu.edu.ua/handle/123456789/41382.

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Число елегазових вимикачів встановлених в електричних мережах напругою 110 кВ і більше, невпинно зростає. В останні роки на ряді підстанцій відбулася серія пошкоджень лінійних елегазових вимикачів, якими здійснюється комутація ПЛ з приєднаними шунтуючими реакторами. Всі аварії мали місце в циклах «включення-швидке відключення», коли вслід за включенням ПЛ з реакторами (при якому в струмі лінійного вимикача із-за наявності реакторів з’являлась аперіодична складова) давалась команда на відключення ПЛ.

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8

Zevallos, Alcahuaman Milton Elvis 1974. "Analise de sensibilidade da corrente de arco secundario para diferentes linhas de transmissão." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259605.

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Orientador: Maria Cristina Dias Tavares<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação<br>Made available in DSpace on 2018-08-10T09:15:34Z (GMT). No. of bitstreams: 1 ZevallosAlcahuaman_MiltonElvis_M.pdf: 2029693 bytes, checksum: 59155e98cbc8a1da85069d7cec8f451e (MD5) Previous issue date: 2007<br>Resumo: O arco secundário surge na manobra de abertura monofásica durante a eliminação de faltas monofásicas não permanentes para terra. O problema se apresenta especialmente nas linhas de EAT, no isolamento aéreo, em faltas que têm ca

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9

Bukvišová, Zuzana. "Modelování rychlých přechodných dějů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-316921.

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This thesis deals with the high speed transient modelling in the electrical networks. The introduction of this work discusses mathematical models of the individual devices used in the system and focuses on the line representation. It also contains a more detailed description of Bergeron and frequency dependent line model. The objective of this thesis is to design a network model using ATP-EMTP simulation program. In this model, the switching overvoltage caused by shunt reactor switching and lightning overvoltage are simulated. The thesis thoroughly describes the settings of the components used

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10

Welbourn, Mark. "Reaktiv effekt i Dala Energis framtida mellanspänningsnät." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-160670.

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Dala Energi has large-scale plans for grid development and wants to have a better understanding of their current reactive power levels along with a future prognosis based on their plans. Changes in line inductance, shunt capacitance, area and placement put Dala Energi on the path to higher charging currents and higher reactive power generation. In addition to causing concerns in their own grid, the increased reactive power generation can present challenges for the owner of the overlying grid. Transmission of reactive power upwards is not permitted in the current contract. Dala Energi’s grid is

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11

Linnet, Agnes. "Eliminating zero-missing phenomenon in long, high voltage, underground cables." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-253262.

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The maximum length of an high voltage underground cable (HV UGC) cable is oftenconstrained by the criterion that the cable cannot have more than 50% reactivepower compensation. If this limit is exceeded the current in the circuit breaker maynot have a zero crossing after energization, which is referred to as the zero missingphenomenon. This is problematic if a fault occur shortly after energization. Inthe past 10 years, different methods have been proposed which would allow greaterreactive power compensation. These methods either prevent the zero missing phenomenon(preventive methods) or provi

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12

LI, JING-HUI, and 李景輝. "Damping of torsional shaft oscillations using shunt reactor control." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/23454880529187859633.

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13

Wei, Cheng-yi, and 魏政義. "Modeling and Transient Analysis for Shunt Reactor Circuit of 161kV System." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/57234897986642344618.

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碩士<br>逢甲大學<br>資訊電機工程碩士在職專班<br>96<br>This research is to inquires into in high intensive the environment of underground cable, if the burden is lighter, the port toward bitter end consumer voltage heat up the phenomenon, may cause the consumer equipment damage. Therefore, the Taipower Company will add the shunt reactor to provide the time lag in order to mutually the reactive power, in order to in suppress low voltage of the bitter end effectively. This research intends to use the ATPDraw creates underground cable and the model of synchronous generator, and with distribution constant the compon

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14

MAO, SHENG-JIAN, and 毛聖鑑. "Damping SSR in a nonidentical two-machine system using shunt reactor control." Thesis, 1991. http://ndltd.ncl.edu.tw/handle/77832486670762335936.

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15

Koenig-Barron, Matthew. "The Emergence and Compensation of Reactive Power in the North Western Province of Zambia." Thesis, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-331765.

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The design of a transmission project is as varied in the factors that affect it as the people to which the project supplies electricity. This thesis focuses on the theoretical considerations in the design process that affect the emergence of reactive power in a system and how reactive compensation is achieved. It examines the place of theoretical concepts in reality by expounding on a field study on the construction of a new transmission power system connecting the North Western Province (NWP) of Zambia to the national grid. The thesis provides colour to these grey theoretical concepts in the

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16

Tzeng, Wei-Luen, and 曾偉倫. "A Study of Switching Characteristics on GCB for Shunt Reactors." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/75421440115210390551.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>91<br>In this thesis, the Electromagnetic Transient Program (EMTP) has been employed to simulate and analyze the transient phenomenon of Gas-insulated Circuit Breaker (GCB) during shunt reactor switching. To increase the realism, the practical Taipower Shi-Mei Extra-High-Voltage substation is considered as the simulation system. Based on the theoretical analysis, the three phase equivalent model is proposed for the EMTP to simulate the switching phenomenon. Besides, the analysis of transient characteristics has been taken as the basis of preventive strategy to avoid

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17

Wan-Long, Wang, and 汪晚龍. "A Study of Switching Transient Phenomenon with High Voltage Shunt Reactors." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/20215117591690658755.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>92<br>In high voltage power system, it is often necessary to compensate the capacitive reactive power by shunt reactors. These reactors are switched frequently, depends on the load variation. The switching operation of circuit breaker of shunt reactors will cause transient over-voltages due to current chopping and re-ignition . This thesis investigates the transient phenomenon during the switching operation of the shunt reactors. Firstly, in this study the EMTP is used to simulate and analyze the transient phenomenon. The results of the computer simulation

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18

ChungChuang-Yung and 莊忠勇. "The Switching Transient Phenomena of the Power System with Shunt Reactors." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/47475860457832244683.

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碩士<br>崑山科技大學<br>電機工程研究所<br>94<br>To compensate line capacitance current and to stabilize voltage in long distance transmission lines and cable systems, shunt reactors to be used in Taipower systems. It is known that shunt reactor current interruption causes a current chopping surge and reignition surge etc., and also it follow by high frequency arc extinction. The most important problem concerning phenomena related to the interruptions may be multiple reignition and resulting in a voltage escalation. The 161kV, 80Mvar reactor is first used in Taipower system. Extensive studies have been pursue

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19

"Enhanced voltage regulation in lightly-loaded, meshed distribution networks using a phase shifting transformer." Thesis, 2013. http://hdl.handle.net/10210/8398.

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M.Ing. (Electrical and Electronic Engineering)<br>Long transmission lines in power system require high line loading in order to lower voltage limits due to line losses. For relatively long lines, line charging is high and thus higher voltage limits reached at low loading. It follows then that it is a challenge to maintaining the voltages between the acceptable limits for relatively long lines. This dissertation highlights the problems experienced when load varying from very low to very high is supplied by very long parallel lines of different impedance characteristic. When the load is extremel

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20

Guha, Anirudh. "Circuit breaker transient recovery voltage analysis with shunt capacitor bank configurations." Thesis, 2010. http://hdl.handle.net/2152/ETD-UT-2010-12-2263.

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Transient Recovery Voltage (TRV) is an important consideration in the selection and installation of circuit breakers with appropriate ratings. Capacitor banks with inrush current limiting reactors are an integral part of the power system. Capacitor banks with inrush reactors on the load side terminal of the capacitor breaker alter the TRV seen across the breaker and it is critical to carry out the TRV analysis to prevent circuit breaker failure. TRV analysis has been performed for various capacitor bank - inrush reactor configurations, with the fault occurring at different terminals on the loa

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21

Nojozi, Hactor Ma-Ande. "Evaluation of replacing fixed with controllable line reactors in mature power systems overlaid with higher voltage lines." Thesis, 2013. http://hdl.handle.net/10210/8396.

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M.Ing. (Electrical and Electronic Engineering)<br>Shunt reactors are used in power system amongst other things, to suppress overvoltages in the network during network switching, auto reclosing of transmission lines and under low loading condition of the network. Traditionally, shunt reactors of fixed type have been used and these have been permanently connected to the system. This research work investigated the feasibility of replacing the fixed shunt line reactors with a reactor, whose parameters are automatically varied depending on the system reactive power requirements, in a mature power s

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22

Chang-Jhih, Chen, and 陳政志. "Comparison of Transient Phenomena when Switching Shunt Reactors on The Line's Two Terminals and Station Busbar." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/09403813699746648920.

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碩士<br>國立臺北科技大學<br>電機工程系碩士班<br>92<br>This paper investigates the transient phenomena when switching high voltage shunt reactors on the operation of Tai-Power system. Two cases that shunt reactors were installed respectively at 345 kV line’s two terminals and 161 kV station busbar were studied and compared. When shunt reactor was closing, high asymmetrical currents could be occurred with long time constant; when shunt reactor was opening, re-ignition between the circuit-breaker contact gaps could lead to very steep over-voltages. This study has been carried out by the simulation calculation usin

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23

Lai, J. H., and 賴建宏. "A Study on Applications of Shunt Reactors to Mitigate Overvoltage Phenomenon in a Undergrounded-Cable Transmission System." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/89987377380389351721.

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碩士<br>國立中正大學<br>電機工程研究所<br>91<br>Due to the structural characteristics of the undergrounded power cable, the undergrounded transmission line produces significant amount of reactive power when the cable is energized. Therefore, it is necessary to install reactive power compensating devices to improve the voltage quality of the undergrounded-cable transmission system. The shunt reactor is a useful devices for such compensating applications. The reactor is usually switched on the system when the load level is high and is switched off when the load level is low. However, the switching transients g

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24

Ramaite, Mbuso Fikile. "Study of the effects of harmonics in the design of transmission network shunt compensators : network simulation and analysis methods." Thesis, 2013. http://hdl.handle.net/10413/9232.

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The management of parallel and series resonance conditions is important for ensuring that harmonic levels are managed on utility networks, and that shunt compensators are able to operate without constraints for various network conditions (states). For these and similar problems, harmonic impedance assessment of the ac network is required for the design of ac filter or shunt capacitor bank installations. This is particularly important for large installations connected to HV or EHV systems, because resonances at these voltage levels tend to be highly un-damped resulting in potentially damaging v

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