Results 11 to 20 of about 20,507 (308)

An IEGT Model for Analyzing the High Current Turn-off Characteristics in DC Circuit Breaker Applications

open access: yesIEEE Access, 2020
The direct current (DC) circuit breaker based on semiconductor power devices is one of the critical components in multiterminal flexible high voltage DC transmission technology.
Xin Liu   +3 more
doaj   +1 more source

New two chamber transfer switch for 6500 A commutation current

open access: yesGlobal Energy Interconnection, 2018
HVDC transfer switches are used in different locations in electrode lines of HVDC transmission systems for their reconfigurations. They have to carry and commutate currents to the overload currents of HVDC transmission systems, which increased to 6,400A ...
Lutz-Rüdiger Jänicke   +4 more
doaj   +1 more source

Research on circuit breaker failure protection and the secondary accelerated fault isolation scheme of VSC-HVDC grids

open access: yesFrontiers in Energy Research, 2023
When the direct current circuit breaker (DCCB) fails to operate, the fault range will further expand, endangering the safe operation of the power gird.
Andi Li   +4 more
doaj   +1 more source

Influence of grid configuration on current conducting behaviour in PV installations [PDF]

open access: yes, 2011
On the roof of an industrial site a 385 kWp PhotoVoltaic installation is operational. When production of this system reaches 60% of the installed power, the circuit breaker trips.
Debruyne, Colin   +3 more
core   +2 more sources

Power quality disturbances assessment during unintentional islanding scenarios. A contribution to voltage sag studies [PDF]

open access: yes, 2019
This paper presents a novel voltage sag topology that occurs during an unintentional islanding operation (IO) within a distribution network (DN) due to large induction motors (IMs).
Bosch Tous, Ricardo   +2 more
core   +2 more sources

Influence of single-phase circuit breaker tripping on inverter commutation

open access: yes电力工程技术, 2022
If commutation failure does not occur when single-phase high resistance grounded in single-circuit AC line of inverter,then single-phase circuit breaker tripping may lead to commutation failure.
SONG Xinfu   +4 more
doaj   +1 more source

Investigations into the Influence of generator Design on Rating of Circuit Breakers in a High Voltage Transmission Network [PDF]

open access: yes, 2003
This paper examines the impact of the network modification produced by the replacement of an existing conventional generator with a high voltage directly connected generator on the adequacy of existing circuit breakers distributed throughout a high ...
McDonald, J. D. F., Saha, T. K.
core   +1 more source

Tripping of circuit breakers in PV installations due to zero sequence field impedance [PDF]

open access: yes, 2011
On the roof of a wool processing company a 385 kWp PV installation is installed. When production of the installation is more than 60% of the rated power the circuit breaker trips.
Debruyne, Colin   +3 more
core   +2 more sources

Research on transient insulation numerical analysis method of circuit breaker in GIS under lightning impulse voltage

open access: yesThe Journal of Engineering, 2019
In order to reveal the process of insulation destruction of circuit breaker in GIS under lightning impulse voltage, a new method of transient insulation numerical analysis is described in this paper.
Wu Qi   +3 more
doaj   +1 more source

Fault Interruption Scheme for HVDC System Using SiC-MESFET and VCB Based Hybrid Circuit Breaker

open access: yesIEEE Access, 2021
As high voltage DC power system is gaining popularity, power electronic switching devices are becoming increasingly advanced to overcome problems of timely fault isolation.
Waheed A. Khan   +6 more
doaj   +1 more source

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