Results 111 to 120 of about 818 (219)

A Dual Enhancement Switching Technology for Vacuum Circuit Breakers in Various AC-Based Operational Environments

IEEE Access
Vacuum circuit breakers (VCBs) have gained the attention of the medium voltage community for their involvement in various applications. However, the problem of arc-reignition is still under investigation with R-C snubber circuits considered as the most ...
Tamer Eliyan, Saad F. Al-Gahtani, Z. M. S. Elbarbary, Fady Wadie   +3 more
doaj   +1 more source

Investigation on the Thermal Characteristics of 33-kV DC Vacuum Circuit Breakers Using 3-D Modeling

IEEE Access
In this article, a 3D model is used to investigate the thermal performance of the 33 kV Direct Current Vacuum Circuit Breakers (DCVCBs) when operating under normal current as well as under faulty conditions.
Ossama E. Gouda, Ahmed Hamdy Elsersy, Matti Lehtonen, Mohamed M. F. Darwish   +3 more
doaj   +1 more source

Full-scale simulation of high-current vacuum arc in vacuum interrupter under axial magnetic field

AIP Advances
Most existing studies on vacuum arcs confine the arc to the space directly between the electrodes. Contacts are often slotted to facilitate magnetic field control of the arc, thereby artificially restricting the arc-burning zone and overlooking the ...
Yueran Liu, Shuangwei Zhao, Xiaolong Huang, Qiang Zhang, Yanmin Liu, Shenli Jia   +5 more
doaj   +1 more source

Modeling and simulation of multiple re-conductions of vacuum circuit breakers

, 2023
Este trabalho de graduação tem por objetivo a implementação de um modelo de disjuntor a vácuo no programa de simulação de transitórios eletromagnéticos ATPDraw, visando a análise de manobras e seus efeitos com múltiplas reconduções (prestrike e restrike).
Laurentino, Ahmad Muhammad
core  

Recent Advances in Vacuum Circuit Breakers

Journal of Engineering Science and Technology Review, 2022
Kimonas Papadiotis, Michael G. Danikas, Ramanujam Sarathi, Georgios Falekas   +3 more
openaire   +1 more source

New design of magnetic systems with permanent magnets in electromagnetic actuators for circuit breakers and contactors

, 2005
W energetyce krajowej daje się zaobserwować rosnące zapotrzebowanie na wyłączniki próżniowe wysokiego napięcia. Wyraźnie rośnie liczba zainstalowanych takich wyłączników, przy czym rzeczywiste zapotrzebowanie sięga kilkunastu tysięcy po to, aby dokonać ...
Piotrowska-Kokot, E.
core  

Influencing Factors of Breaking Capacity of Double-Break Vacuum Circuit Breakers

, 2013
Using a series arrangement of two vacuum interrupters (VIs) has been proved to be an effective way of developing higher voltage vacuum circuit breakers (VCBs), which are known as double-break VCBs.
Shu, Shengwen, Ruan, Jiangjun, Huang, Daochun, Wu, Gaobo   +3 more
core  

Method of Mechanical Fault Intelligent Diagnosis Based on Vibration Signal of High Voltage Circuit Breaker

Gaoya dianqi, 2014
Based on vibration signal of high voltage circuit breaker,a new method of intelligent fault diagnosis that wavelet packet extracts energy entropy which are used as characteristic vector of the support vector machine（SVM）to construct classifier for fault ...
YANG Zhuangzhuang, LIU Yang, ZHOU Guoming, LIN Xin, JI Tian, LI Bin   +5 more
doaj  

Numerical Analysis, Experimental Validation, and Application of DC Interruption With Parallel Vacuum Interrupters

International Transactions on Electrical Energy Systems
Large-capacity high voltage direct current circuit breakers (HVDC CBs) are critical equipment for achieving reliable operation of future multiterminal HVDC systems.
Siyuan Liu, Yifan Chen, Jinchao Chen, Mengze Yu, Zhiyuan Liu, Yingsan Geng   +5 more
doaj   +1 more source

Fault Diagnosis of Medium Voltage Circuit Breakers Based on Vibration Signal Envelope Analysis. [PDF]

Sensors (Basel), 2023
Wu Y, Zhang J, Yuan Z, Chen H.
europepmc   +1 more source