Results 11 to 20 of about 22,042 (209)
IET Generation, Transmission & Distribution, 2022 Fast clearing of a short‐circuit fault is vital to increase the transmission capacity of power grid transmission lines and improve the transient stability of a power system.
Chen Guan +8 more
doaj +1 more source
Time‐varying frequency model for electric arc furnaces [PDF]
IET Generation, Transmission & Distribution, 2021 Abstract Accurate modelling of the Electric arc furnace (EAF) is necessary to study its impact on the power systems. Here, a new model for the EAF is presented in which both non‐linearity and time‐varying characteristics are taken into account.
Haidar Samet +2 more
openaire +3 more sources
SIMULATIONS AND MEASUREMENTS OF THE PRE-ARCING TIMES IN HBC FUSES UNDER TYPICAL ELECTRIC FAULTS [PDF]
, 2010 International audienceThis work deals with the comparison between calculations and measurements of pre-arcing times in High Breaking Capacity fuses under typical fault current conditions.
D. Rochette +4 more
core +2 more sources
IEEE Access, 2021 The number of devices either providing or demanding direct current is growing more and more. This led to the renascence of DC grids and revealed a need for research. One critical component is the DC circuit breaker.
Dirk Bosche +5 more
doaj +1 more source
Mechanism of saline deposition and surface flashover on high-voltage insulators near shoreline:mathematical models and experimental validations [PDF]
, 2019 This paper deals with sea salt transportation and deposition mechanisms and discusses the serious issue of degradation of outdoor insulators resulting from various environmental stresses and severe saline contaminant accumulation near the shoreline.
Chaudhary, Muhammad Akmal +2 more
core +2 more sources
A Novel Arc Detection Method for DC Railway Systems
Energies, 2021 Electric arcing due to contact interruption between the pantograph and the overhead contact line in electrified railway networks is an important and unwanted phenomenon.
Yljon Seferi +3 more
doaj +1 more source
Applied Sciences, 2017 This paper analyses the transient characteristics and breaking performance of direct-current (DC) forced-interruption vacuum interrupters in 270 V power-supply systems.
Wenlei Huo +5 more
doaj +1 more source
Pre-Arcing Time Prediction in a Making Test for a 420 kV 63 kA High-Speed Earthing Switch
Energies, 2017 A high-speed earthing switch (HSES) of a gas-insulated switchgear (GIS) performs a secondary role in protecting the power system in the event of an accident.
Min-Cheol Kang +2 more
doaj +1 more source
Investigations on the safe stroke of mechanical HVDC vacuum circuit breaker
The Journal of Engineering, 2019 Here, a DC vacuum arc interruption test based on the hybrid high-speed actuator and the method of commutation is carried out in the synthetic loop system. The safe stroke is one of the basic breaking parameters.
Ning Xia +5 more
doaj +1 more source
Time constants for nonstationary arcs [PDF]
Zeitschrift für Physik A Hadrons and nuclei, 1968 The time constants associated with the initial deviations of an arc column from a static state have been studied analytically. The basic approach is to use a Taylor series expansion in powers of time of the energy balance equation. It is assumed that the arc gas is optically thin and is in local thermal equilibrium.
openaire +2 more sources