Results 31 to 40 of about 818 (219)
DC interruption characteristic of vacuum circuit breaker
Electrical Engineering in Japan, 2005 AbstractA high‐speed vacuum circuit breaker (HSVCB) has been investigated. HSVCB makes high‐frequency current superimposed on a fault current so that the current is forced to be zero and is interrupted. Its interruption performance is considered to be dependent on the rate of change of the current (di/dt). As a fundamental research, we investigated the
Odaka, Hiromi +5 more
openaire +2 more sources
Testing of SF6- and vacuum generator circuit breakers
, 2011 Generator circuit breakers differ in various aspects from standard distribution breakers. One of the main differences is in the electrical stresses during fault current interruption.
L.H. te Paske +3 more
core +1 more source
MATEC Web of Conferences, 2017 The circuit breakers play a important role in control and protect the power systemand the vacuum circuit breaker has beenwidely used in the field of medium voltage with its excellent opening performance.Virtual prototyping technology is alsobecamemore ...
Ding Xianliang +5 more
doaj +1 more source
Breakdown performance of vacuum circuit breakers using alternative CF3I-CO2 insulation gas mixture [PDF]
, 2016 In this paper, sulphur hexafluoride (SF6) insulated vacuum interrupter circuit breakers have been used to explore replacing SF6 gas with a trifluoroiodomethane and carbon dioxide (CF3I-CO2) gas mixture.
Widger, P., Griffiths, H., Haddad, A.
core +1 more source
Автоматизация технологических и бизнес-процессовThe article examines current approaches to optimizing the operating modes of distributed technical systems based on automation and intelligent control technologies, using the example of 10 kV electric networks.
M. S. Yukhymchuk +3 more
doaj +1 more source
Synthetic test circuit with two‐level voltage source for HVDC circuit breakers
IET Generation, Transmission & Distribution, 2023 In order to ensure the reliable interruption of high voltage direct current circuit breaker (HVDC CB), the breaking test of HVDC CB plays an important role in its performance verification.
Shixin Xiu +6 more
doaj +1 more source
Graphene-Enhanced CuW Composites for High-Voltage Circuit Breaker Electrical Contacts
Applied SciencesTo address the issue of over-standard short-circuit currents in a power system, it is imperative to enhance the comprehensive performance of the electrical contacts, which serve as the lynchpin of circuit breakers, so as to improve the breaking capacity ...
Tan Liu +6 more
doaj +1 more source
High Voltage, 2019 Mechanical circuit breakers (MCBs) are the limiting component for current injection HVDC circuit breakers. Improving their interruption performance reduces requirements for capacitance and inductance needed in the injection circuit and thus space use and
Tim Schultz +5 more
doaj +1 more source
Laser &Photonics Reviews, EarlyView.Optically confined gold nanorods exhibit cooperative light‐driven dynamics, forming mobile end‐to‐end dimers with orientation‐dependent propulsion. Using structured laser traps and an opto‐thermo‐hydrodynamic model, we uncover how optical binding, polarization‐induced torque, and near‐surface hydrodynamics govern their motion.
José A. Rodrigo, Tatiana Alieva
wiley +1 more source
High Voltage, EarlyView.ABSTRACT This paper presents a simplified equivalent circuit model (ECM) for the post‐arc sheath stage in DC vacuum circuit breakers and outlines the method for calculating circuit parameters using the particle‐in‐cell Monte Carlo collision (PIC‐MCC) method. The post‐arc sheath is modelled as a parallel combination of a variable resistor and a variable
Xubin Li +5 more
wiley +1 more source