Results 81 to 90 of about 818 (219)

Ion Crowding Effect in Unilaterally Downsized Perovskite Memristors

Advanced Science, Volume 13, Issue 21, 13 April 2026.
The downscaling of perovskite memristors incorporating monocrystalline nanoplates is accompanied by an ion crowding effect, which greatly enhances the local electric field in the vicinity of electrode. The highly controlled crowding of anions and vacancies results in anisotropic switching characteristics as well as unique morphology modification ...
Conghui Tan, Meiqi An, Weili Liu, Haotian Wang, Shuai Yang, Jing Li, Jianliang Li, Yingmin Luo, Chao Wang, Jiao Xu, Yaodan Chi, Yiming Yang   +11 more
wiley   +1 more source

REPLACMENT OF AIR CIRCUIT BREAKERS WITH VACUUM CIRCUIT BREAKERS ON 6,3 kV LEVEL IN KRŠKO NUCLEAR POWER PLANT

, 2010
Cilj diplomske naloge je predstaviti problem in predlagati rešitev za obstoječe zračne odklopnike na srednjenapetostnem 6,3 kV nivoju v NEK, ki se jim izteka življenjska doba.
Ošlovnik, Matjaž
core  

Applications of Various Types of Circuit Breakers in Electrical Power Systems: A Review

, 2021
This paper presents a review on the applications of various types of circuit breakers (CB) used in electric power transmission and distribution. Circuit breakers are majorly classified under direct current (DC) or alternating current (AC) system.
Ezeonye , C. S., Obi, P. I., Amako, E. A.   +2 more
core  

A simple model of distribution of current over cathodes of vacuum circuit breakers [PDF]

, 2019
There are several hundreds of spots operating simultaneously on cathodes of vacuum arcs in high-power vac uum circuit breakers. In this work, the spot distribution along the contact surface is simulated by means of an approach that is based on the ...
Benilov, Mikhail S., Cunha, Mário D., Hartmann, Werner, Wenzel, Norbert, Almeida, Pedro G. C.   +4 more
core   +1 more source

Influence of Surface Charges on Impulse Flashover Characteristics of Alumina Dielectrics in Vacuum [PDF]

, 2009
For higher electrical insulator performance of vacuum circuit breakers (VCB), the surface flashover in vacuum should be improved. In particular, it is important to clarify how strongly surface charges influence the surface flashover mechanism.
Kato, Hidenori, Kato, Katsumi, Okubo, Hitoshi, Ishida, Tsugunari, Tsuchiya, Kenji   +4 more
core   +1 more source

Development and distribution of surface charge on epoxy resin under dc electric field in different gases

AIP Advances, 2018
Under DC voltage, charge accumulates on the break insulation of mechanical DC circuit breakers, distorting the local electric field, which increases the risk of break insulation failure.
Wenxia Sima, Hang Xu, Potao Sun, Qianqiu Shao, Ze Yin   +4 more
doaj   +1 more source

Transitional processes at capacitive currents switching-off by single and double-break interrupters of vacuum circuit breakers

, 2014
Vacuum circuit breaker technology based on double-break vacuum interrupters has become the most requirements of high voltage circuit breakers that not environmentally harmful.
Saafan, E., Lazimov, T.
core  

Methods for estimation of the vacuum status in vacuum circuit breakers Methods for Estimation of the Vacuum Status in Vacuum Circuit Breakers

, 2020
Inthis paperseveralmethods are describedfortheestimationofthepressureinsidevacuumintempters which have been in operation during many years. The methods are applicable without demounting the interrupters and use only electrical measuring techniques ...
W E H Merck, G C Damstra, C E Bouwmeester, R J B Gruntjes, B V, Holec Middenspamhg, Hengelo   +6 more
core  

Peducing the frequency of switching overvoltage in generator networks

Известия высших учебных заведений: Проблемы энергетики
THE PURPOSE of the study is to study the problem of switching overvoltages in 10 kV generator networks. Using the Matlab Simulink package, create a model of common auxiliaries of a 10/0.4 kV power station, calculate the overvoltage at different sections ...
R. A. Belsky, V. Y. Frolov, R. I. Zhiligotov, E. P. Safonov   +3 more
doaj   +1 more source

Current-zero measurements of vacuum circuit breakers interrupting short-line faults [PDF]

, 2003
Current zero measurements are performed during short-line fault interruption tests of vacuum circuit breakers. This switching cycle is characterized by a very steep transient recovery voltage. High-resolution measurements of near current-zero arc current
Linden, van der, W.A., Linden, WA van der, Smeets, R.P.P., Smeets, RPP René   +3 more
core   +1 more source