Results 281 to 290 of about 154,492 (354)
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International Instrumentation and Measurement Technology Conference, 2020
The reliability of the operations of the high-voltage circuit breaker is the key to the stable power system, so it’s fault diagnosis and condition assessment it is of great significance.
Kerim Obarcanin +2 more
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The reliability of the operations of the high-voltage circuit breaker is the key to the stable power system, so it’s fault diagnosis and condition assessment it is of great significance.
Kerim Obarcanin +2 more
semanticscholar +1 more source
Circuit breakers go high voltage
IEEE Power and Energy Magazine, 2009Over the last 50 years, high-voltage circuit breakers have become more reliable, more efficient, and more compact because the interrupting capability per break has been increased dramatically. These developments have not only produced major savings, but they have also had a massive impact on the layout of substations with respect to space requirements.
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Study of the Arc Interruption Performance of CO2 Gas in High-Voltage Circuit Breaker
IEEE Transactions on Plasma Science, 2019CO2 is a possible alternative to SF6 as the interruption medium in gas circuit breakers. The arc interruption performance of CO2 is investigated in this paper, by combining the computational fluid dynamics (CFD) analysis and the Mayr arc model.
Ze Guo +7 more
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A high-capacity high-voltage three-cycle oil circuit breaker
Electrical Engineering, 1945POWER-system designers and operating engineers quite properly are constantly endeavoring to improve the quality of their services. Increases in connected capacity inevitably accentuate the demand for reducing both the frequency and the duration of interruptions in the flow of power. This is particularly true in the case of high-voltage lines which form
H. L. Byrd, E. B. Rietz
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Accelerated diagnostics of high-voltage circuit breakers
Russian Electrical Engineering, 2007Diagnostics of high-voltage circuit breakers (HVCBs) is considered on the basis of an analysis of digital records generated by a multichannel digital recorder. A technique of the accelerated control of HVCB characteristics in switching on/off modes without opening the breaker tanks is described.
G. M. Mikheev +3 more
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Flow Behavior in High-Voltage Circuit Breaker
IEEE Transactions on Plasma Science, 2011Since several years, high-voltage circuit breakers (voltages of up to 800 kV) have been studied by the thermal plasma community to attain high level of reliability, good operating economy, and long intervals without maintenance. The studies are also related to gas substitution in order to replace SF6. This feature consists to study, by a numerical tool
Jean-Jacques Gonzalez, Pierre Freton
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Contact Erosion in High Voltage Circuit Breakers
2018 IEEE Electrical Insulation Conference (EIC), 2018During current interruption in the high voltage circuit breaker, the contacts are eroded due to high temperature in the arc zone. This may influence the lifetime of the breaker and even current interruption process. Although there are many parameters that influence contact erosion, the work presented in this paper focuses on the shape of the contact ...
M. T. Dhotre, X. Ye, S. Kotilainen
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Condition monitoring of high voltage circuit breakers
Proceedings of IEEE. AFRICON '96, 2002The advances made in microprocessor-based measuring equipment can be used to good effect to determine the condition of a circuit breaker. In essence a very effective condition monitoring tool is represented by a number of products that are now commercially available.
M.H.B. de Grijp +3 more
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Arc Energy in High Voltage Circuit Breakers
Arabian Journal for Science and Engineering, 2012This work is devoted to the study of the energy balance at the opening of an SF6 circuit breaker. A new model is proposed to simulate the thermal exchanges involved around the current zero as a function of time. The theoretical basis of this model consists of the coupling of the electric and thermal equations of the arc plasma, which takes into account
A. Ziani, H. Moulai
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High voltage oil circuit breakers
Electrical Engineering, 1932MECHANICAL maintenance of high voltage circuit breakers is of considerable importance to the successful operation of power systems. Experience obtained over a number of years has proved that in many ways existing equipment may be modernized and betterments provided by the operating engineer.
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