Vacuum Circuit Breaker Transients During Switching of an LMF Transformer

Shipp, D.D.; Dionise, Thomas J.; Lorch, V.; MacFarlane, W. G.

doi:10.1109/tia.2011.2175430

Cited by 30 publications

(18 citation statements)

References 3 publications

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“…This method solve the problems of the current is too large and the resistance burnout. The result of the simulation show that chooses proper parameters of C 1 and C 2 , the device could eliminate switching overvoltage effective [6].…”

Section: The Types and Principle Of Different Resistance-capacitance mentioning

confidence: 95%

“…In fact, in the practical circuit, besides the magnetizing inductance , there is capacitance in the transformer winding. According to the conservation of energy, when all of the magnetic field energy converts into static electricity energy, the voltage of the capacitor will be maximum [5],…”

Section: The Theoretical Derivationsmentioning

confidence: 99%

“…Most of those energy-intensive enterprises are using electric arc furnace, which would cause hidden troubles to the grid, such as line trips, equipment damages and overvoltage accidents. Among this, the overvoltage accident caused by using the vacuum breaker to cut off the arc furnace transformers is one of the most serious problems [1][2][3][4][5][6][7][8][9][10][11][12][13] .…”

Section: Introductionmentioning

confidence: 99%

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Research on overvoltage suppression of interrupting no load transformer

Zhang¹,

Xinheng²

2013

JESTR

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In the process of power system operation, it is normal to interrupt no load transformer, reactor and no load motor. Switching those inductive loads will give rise to high amplitude overvoltage. With the example of a steel mill's refining furnace transformer, this paper covers the basic principle of the overvoltage formation, introduces the advantages and disadvantages of the resistance-capacitance absorbing device and rectifier bridge device. On base of the above analysis, this paper puts forward a mixed device to suppress overvoltage of interrupting no load transformer. Moreover, simulation has been worked with ATP-EMTP, the results show that the device can greatly reduce the overvoltage and improve the reliability of the system. At last, the effectiveness and feasibility of the presented device are verified by the experiment..

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Section: The Types and Principle Of Different Resistance-capacitance mentioning

confidence: 95%

Section: The Theoretical Derivationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Research on overvoltage suppression of interrupting no load transformer

Zhang¹,

Xinheng²

2013

JESTR

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“…9 Falla en un autotransformador ocasionada por una sobre tensión durante la interrupción del proceso de arranque Es importante señalar que las sobre tensiones ocasionadas por re-encendidos múltiples y escalación de tensiones, también están siendo reportadas al abrir el interruptor principal para desconectar transformadores en vacío y para desconectar bancos de capacitores y compensadores estáticos de reactivos, en condiciones de falla (Shipp et al, 2012;Gajjar et al, 2013;Cisneros et al, 2015). Asimismo, se ha estado recomendando la instalación de apartarrayos y supresores de transitorios RC, en el lado línea, para la desconexión de transformadores en vacío (Shipp et al, 2012;Mardegan et al, 2016). Por otro lado, se han iniciado diferentes estudios para el desarrollo de mejores supresores de transitorios (Mejía et al, 2015).…”

Section: Garcíaunclassified

Sobretensiones en Arrancadores con Autotransformador Causadas por la Desconexión del Interruptor Principal en el Arranque de los Motores

et al. 2018

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Se discuten tres fallas, que se presentaron en el lado línea, de tres arrancadores con autotransformador de 13.8 kV. Las fallas fueron ocasionadas por sobretensiones, generadas por el fenómeno de re-encendidos múltiples y escalación de tensiones, el cual, a su vez, fue ocasionado por la apertura del interruptor principal, durante el proceso de arranque de los motores. Este mecanismo de falla es diferente a los que han sido reportados en la literatura especializada, ocasionados por la apertura del interruptor del neutro o por el cierre del interruptor principal, durante el arranque de los motores. Para proteger a los arrancadores contra las sobretensiones en el lado línea, es necesario instalar, en esta zona, una combinación de apartarrayos y supresores de transitorios RC. Los apartarrayos cortan la magnitud de la sobretensión y los supresores modifican su frecuencia. Esto minimiza las posibilidades de que se generen re-encendidos múltiples y escalación de tensiones.

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“…Ferroresonance in a power transformer has been observed for many years . Simulations have been conducted for ferroresonance in CVT due to CB switching in a typical substation configuration adopted from Ref.…”

Section: Ferroresonance In Cvtsmentioning

confidence: 99%

A review of ferroresonance in capacitive voltage transformer

Bakar

Khan

Kwang

et al. 2014

IEEJ Transactions Elec Engng

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Ferroresonance incidences in electrical power system have been commonly regarded as unexplained phenomenon, which is not critical for utility engineers. As a result, research conducted in this area is limited and the awareness on ferroresonance is relatively low among utility engineers. However, as the electrical system evolves, its complexity increases in line with the increasing risk of ferroresonance. As a result, this paper provides a consolidated review on the research conducted on ferroresonance to highlight its importance. This paper covers the fundamental inductor-capacitor pair for ferroresonance initiation and the modes of ferroresonance, followed by ferroresonance in capacitive voltage transformer (CVT), constituting its impact, initiation, and suppression techniques. The core focus in this paper is ferroresonance in CVT due to switching events, on which the documented literature is very scarce.

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Vacuum Circuit Breaker Transients During Switching of an LMF Transformer

Cited by 30 publications

References 3 publications

Research on overvoltage suppression of interrupting no load transformer

Research on overvoltage suppression of interrupting no load transformer

Sobretensiones en Arrancadores con Autotransformador Causadas por la Desconexión del Interruptor Principal en el Arranque de los Motores

A review of ferroresonance in capacitive voltage transformer

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