Study on dielectric recovery characteristics after high frequency current interruption in vacuum circuit breaker with short gap

Tamaki, Satoru; Ganaha, Kazuki; Miyamoto, Seibo; Kaneko, Eiji

doi:10.1109/deiv.2014.6961612

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…With regard to current breaking in direct-current circuit, an inverse voltage can be generated, which is the same or higher than the system voltage so as to make current reduce to zero. [1][2][3][4][5] The inverse voltage is generated through inserting an additional resistance or reactance in the current loop; energy in the direct-current system is dissipated through the device. [6][7][8][9][10] It is observed that the higher the inverse voltage, the shorter the required time for current breaking.…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: Short-term dielectric recovery property of breaking for artificial zero current-limiting vacuum circuit breaker

Zhang

Lin

2018

The International Journal of Electrical Engineering & Educa

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In order to research influences of di/dt on breaking capacity of vacuum switch in the process of direct-current interruption at the time of clearance between open contacts, arc time, and current zero, recovery strength of intrinsic dielectric after breaking of vacuum switch was measured, which is free recovery process of contact clearance dielectric without applying recovery voltage. A short-term dielectric recovery property of breaking for artificial zero current-limiting vacuum circuit breaker was proposed in this study. The breaker comprises superconducting current limiting module and direct-current zero passage breaking module. Breaking feasibility of the superconducting current-limiting direct-current breaker under different nominal voltage was researched. There is a critical separation in the breaking process of direct current under the test condition. Faster breaking speed and shorter arc time were selected in the scope of separation so as to improve the recovery strength of intrinsic dielectric for electrode gap after current zero passage. Lower inverse current zero passage frequency was selected under the same separation and the same arc time so as to improve the recovery strength of intrinsic dielectric after current zero passage.

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Section: Introductionmentioning

confidence: 99%

RETRACTED: Short-term dielectric recovery property of breaking for artificial zero current-limiting vacuum circuit breaker

Zhang

Lin

2018

The International Journal of Electrical Engineering & Educa

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“…It is known that a long‐duration arc significantly deteriorates the contact surface and shortens its lifetime. An arc discharge also increases the contact resistance and decreases the dielectric strength between the contacts , thus degrading the performance of conventional circuit breakers.…”

Section: Introductionmentioning

confidence: 99%

Dielectric strength of electric contacts after short‐duration arc in a hybrid DC circuit breaker

Nakayama

Zen

et al. 2020

IEEJ Transactions Elec Engng

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A hybrid direct current circuit breaker consisting of electrical contacts connected in parallel with a silicon carbide metal oxide semiconductor field‐effect transistor semiconductor device is capable of operating with low energy loss and high short‐circuit tolerance. It features a short‐duration arc discharge during current commutation; however, how the arc affects the dielectric strength between the contacts is not yet clear. This study conducts a quantitative evaluation of the dielectric strength after a short‐duration arc commutation. It is shown that the dielectric strength decreases after the arc commutation, and the breakdown electric field decreases as the arc duration increases. These results suggest that the existence of metal vapor and an increase in contact erosion caused by the commutation arc lower the dielectric strength of the electric contacts, in addition to the known effects of temperature rise of the contact surface and the air between contacts. © 2020 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

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Study on high frequency current interruption characteristics of vacuum circuit breaker

Kojima

Oshiro

Kaneko

2016

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)

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Study on dielectric recovery characteristics after high frequency current interruption in vacuum circuit breaker with short gap

Cited by 4 publications

References 3 publications

RETRACTED: Short-term dielectric recovery property of breaking for artificial zero current-limiting vacuum circuit breaker

RETRACTED: Short-term dielectric recovery property of breaking for artificial zero current-limiting vacuum circuit breaker

Dielectric strength of electric contacts after short‐duration arc in a hybrid DC circuit breaker

Study on high frequency current interruption characteristics of vacuum circuit breaker

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