Results 111 to 120 of about 16,999 (226)

Fast Hybrid Circuit Breaker for Medium-Voltage DC and AC Railway Power Supply Networks: A Simulation-Based Study [PDF]

International Journal of Railway Research
This paper investigates the performance of a medium-voltage hybrid circuit breaker designed for the protection of electrical power supply networks in railway transportation systems.
Ahmad Olyaei, Rozbeh Asad
doaj  

Delays in Protection Devices and Their Effects on Selectivity: The Reaction Time Gap

IEEE Open Journal of Power Electronics
This Paper investigates how the internal delays of circuit breakers until the limitation of the fault current affect the selectivity of a low-voltage direct current (LVDC)-grid under short-circuit conditions.
Johannes Gehring, Raffael Schwanninger, Kilian Drexler, Bernd Wunder, Vincent Lorentz, Martin Marz   +5 more
doaj   +1 more source

Advanced Test Circuit for DC Circuit Breakers

, 2018
QC ...
Augustin, Tim, Becerra Garcia, Marley, Nee, Hans-Peter   +2 more
openaire   +1 more source

A Survey of Hybrid Circuit Breakers: Component-Level Insights to System-Wide Integration

IEEE Open Journal of Power Electronics
This survey provides a comprehensive review of hybrid circuit breakers and their applications in 1 kV to 800 kV, both alternating current and direct current systems.
Yuchen He, Chunmeng Xu, Yuan Li, Fang Z. Peng   +3 more
doaj   +1 more source

Development and distribution of surface charge on epoxy resin under dc electric field in different gases

AIP Advances, 2018
Under DC voltage, charge accumulates on the break insulation of mechanical DC circuit breakers, distorting the local electric field, which increases the risk of break insulation failure.
Wenxia Sima, Hang Xu, Potao Sun, Qianqiu Shao, Ze Yin   +4 more
doaj   +1 more source

Developments in space power components for power management and distribution [PDF]

, 1984
Advanced power electronic components development for space applications is discussed. The components described include transformers, inductors, semiconductor devices such as transistors and diodes, remote power controllers, and transmission ...
Renz, D. D.
core   +1 more source

The Alternate Arm Converter: A New Hybrid Multilevel Converter With DC-Fault Blocking Capability

, 2013
This paper explains the working principles, supported by simulation results, of a new converter topology intended for HVDC applications, called the alternate arm converter (AAC).
Critchley, R, Crookes, W, Green, TC, Hassan, F, Merlin, MMC, Mitcheson, PD, Trainer, DR   +6 more
core   +1 more source

Impact Assessment of Hypothesized Cyberattacks on Interconnected Bulk Power Systems

, 2018
The first-ever Ukraine cyberattack on power grid has proven its devastation by hacking into their critical cyber assets. With administrative privileges accessing substation networks/local control centers, one intelligent way of coordinated cyberattacks ...
Ginter, Andrew, Ten, Chee-Wooi, Vasilakos, Athanasios V., Yamashita, Koji, Yang, Zhiyuan   +4 more
core   +1 more source

Efficient integration of buck converter into an active rectifier for DC-fault current limitation in DC networks

e-Prime: Advances in Electrical Engineering, Electronics and Energy
Voltage Source Converters (VSCs) operating as active rectifiers inherently lack current-limiting capabilities for faults occurring on the DC side due to the presence of freewheeling diodes in IGBT or MOSFET structures.
Evangelos E. Pompodakis, Georgios I. Orfanoudakis   +1 more
doaj   +1 more source

The suitability of N2 to replace SF6 in a triggered spark-gap switch for pulsed power applications [PDF]

, 2009
The high dielectric strength of sulphur hexafluoride (SF6) when compared with other gases, coupled with safety benefits such as non-flammability and non-toxicity, has seen the widespread use of SF6 for the insulation of switching components. However, SF6
Given, M.J., MacGregor, S.J., Sinclair, M.A., Stewart, G.R., Thomas, K.J., Timoshkin, I., Wilson, M.P.   +6 more
core