Results 81 to 90 of about 1,496 (223)
, 2021 Prekidači su neizostavni dio svake elektroenergetske mreže i imaju temeljni zadatak uklapanja i vođenja struje u normalnim pogonskim stanjima kao i prekidanje pojavom nenormalnog pogonskog stanja.
Zubović, Ivo
core
Adaptive current limiting control strategy for MMC-HVDC under bipolar fault conditions
电力工程技术Direct current circuit breakers (DCCBs) are extensively utilized in flexible DC transmission systems, with their cost being intricately related to the breaking current.
WANG Shuo +5 more
doaj +1 more source
Influence of Arc Faults on Pressure Production Characteristics in AC Turret of UHV Transformers
High Voltage, Volume 11, Issue 3, Page 633-645, June 2026.ABSTRACT The overpressure caused by arc fault in the oil tank can lead to a transformer explosion. Since the AC turret of transformers serves to connect the transformer windings with the AC busbar, the arc current can be extremely high if an earth fault arc occurs leading to potentially hazardous pressure.
Yuhang Li +4 more
wiley +1 more source
Arc Absorption Options Based on Passive Components in DC Circuit Breakers
DC circuit breakers have become an essential protection element for DC buses in renewable energy and DC microgrid systems Given that there are no zero crossings in a DC power supply compared to an AC waveform arc extinguishing is a difficult process in ...
Dassanayake, C +4 more
core +1 more source
Topology of a Hybrid DC Circuit Breaker with Coupled Inductor-assisted Current Limiting [PDF]
Dianli jianshe[Objective] With the increase in transmission capacity of DC grids， issues such as rapid rise of fault current， high amplitude， difficulty in breaking， and high cost arise in hybrid DC circuit breakers based on fully controlled power electronic devices ...
ZHANG Baoge, LI Guodong, HUANG Jiahong, CHANG Weishan
doaj +1 more source
Plasma Absorption Techniques in Direct Current Circuit Breakers
DC circuit breakers are becoming popular in the industry with the renewable energy demand Compared to AC circuit breaking DC circuit breaking needs an advanced method to immobilize the arc generated during the opening process of the circuit breaker These
Dassanayake, C +4 more
core +1 more source
Optimisation of commutation circuit parameters for DC vacuum circuit breakers
The Journal of Engineering, 2019 As the environmental problems caused by the consumption of the non-renewable fossil energy are getting increasingly serious, the new energy power generation has received wide attentions.
Deen Yu, Hai Chen, Wei Liu, Xiaoming Liu
doaj +1 more source
High Voltage, 2019 The article proposes a mechanical DC circuit breaker (CB) based on a series LC circuit. It requires two switches (a fast disconnector and an AC circuit breaker), an inductor and a capacitor, and therefore the cost is expected to be low. A series LC circuit is analysed and it is concluded that fault current will always have natural zero‐current ...
openaire +3 more sources
EnergiesThe occurrence of short-circuit faults in AC/DC microgrids gives rise to exceptionally high currents with rapid escalation, particularly in DC feeders where current zero-crossing is absent.
Ali Bakhshi, Ali Moghim, Mojgan Hojabri
doaj +1 more source
A coordination protection scheme for high-voltage DC grids without line boundary reactors
International Journal of Electrical Power & Energy SystemsLocal measurement-based protections of DC transmission line without boundary reactors are important for the safe operation of high-voltage DC grids, however, existing protections have dead zones or cannot tolerate high-resistance faults. To address these
Yanxun Guo +5 more
doaj +1 more source