Results 1 to 10 of about 31,428 (130)

Analysis of Arc Re-Ignition in Vacuum Interrupter-Based HVdc Circuit Breakers

open access: yesIEEE Access
The protection of HVdc systems has long been challenged by the absence of natural current zero-crossing, typically addressed using L-C branches. However, the phenomenon of multiple arc reignitions in vacuum interrupter (VI) based HVdc circuit breakers ...
Tamer Eliyan   +3 more
doaj   +2 more sources

Combined Effect of the Parameters of Vacuum Interrupter and L-C Circuit Upon Arc Re-Ignition in HVDC Circuit Breakers

open access: yesIEEE Access
The new horizons for HVDC systems and their applications has intensified the research in HVDC protection systems. The HVDC circuit breakers (CB) has been the center of the protection systems with vacuum interrupters (VIs) showcasing a great potential for
Tamer Eliyan   +3 more
doaj   +2 more sources

Simulation research on arc extinguishing characteristics of 35kV self-detaching lightning protection device based on magnetohydrodynamics

open access: yes电力工程技术, 2023
To explore the factors affecting the arc extinction performance of the self-disengaging lightning protection device, a numerical simulation model of arc extinction process of the device based on magneto-hydrodynamic theory is established in this paper ...
XIE Congzhen   +5 more
doaj   +1 more source

Overvoltages during switching operations of vacuum switching devices [PDF]

open access: yesZbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2013
This paper presents the results of experimental studies of voltage phenomena in the switching operations of vacuum switching devices made by various manufacturers in several different configurations of 6 kV, 10 kV, 20 kV and 35 kV networks.
Vukelja Petar   +3 more
doaj   +1 more source

Research on the Effect of an Air-Blown Interrupting Gap to Reduce the Rate of Lightning Tripping

open access: yesEnergies, 2023
The air-blown interrupting gap protection method is a self-energy interrupting method based on the concept of suppressing arc building by frequency continuation.
Hao Li   +4 more
doaj   +1 more source

Study on impact of gap difference on plasma distribution of direct current vacuum circuit breaker with double-break

open access: yesAIP Advances, 2023
During the fault current breaking process of a mechanical direct current vacuum circuit breaker (DC VCB) with double-break (DB), the mechanism’s dispersion can result in a gap difference between the two breaks. A DB DC VCB breaking experiment platform is
Chongyang Huang   +5 more
doaj   +1 more source

Determination of Cooling Rate and Temperature Gradient during Formation of Cathode Spot Craters in a Vacuum Arc

open access: yesCrystals, 2022
Due to the extreme thermal conditions and short lifetimes, experimental exploration of cathode spots in vacuum arcs is very difficult. The intensive heat in the cathode spot is believed to be generated by ion bombardment and by Joule heating.
Johann Peter Mogeritsch   +4 more
doaj   +1 more source

Method of Reducing the Effects of Repeated Ignition during Earth Faults in Compensated Medium Voltage Networks

open access: yesEnergies, 2023
The article presents the results of research in the field of limiting the effects of overvoltages and improving the conditions for the self-extinguishing of transient faults in medium voltage networks with earth fault current compensation. The aim of the
Jerzy Andruszkiewicz   +4 more
doaj   +1 more source

Characteristics of the flame flashback in a dual-mode scramjet combustor by the gliding arc plasma

open access: yesApplications in Energy and Combustion Science, 2023
A multi-channel gliding arc (MCGA) plasma with an average power of 6000 W is utilized to control the flame flashback in a dual-mode scramjet combustor with a cavity flameholder.
Rong Feng   +8 more
doaj   +1 more source

Re-igniting the afterglow plasma column of an AC powered gliding arc discharge in atmospheric-pressure air [PDF]

open access: yesApplied Physics Letters, 2018
The stability and re-ignition characteristics of the plasma column of an alternating current (AC) powered gliding arc discharge operating in atmospheric-pressure air were investigated for better plasma-mode controlling and optimized applications. By modulating the AC power supply and the air flow field, the states of afterglow plasma column were varied.
Chengdong Kong   +5 more
openaire   +2 more sources

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