Results 91 to 100 of about 624 (193)

Technical Assessment of Load Commutation Switch in Hybrid HVDC Breaker

open access: yes, 2015
The development of a large-scale high-voltage direct current (HVDC) power grid requires a reliable, fast, and low-loss circuit breaker. The load commutation switch (LCS) is an essential part of ABB's 1200-MW hybrid HVDC breaker concept, which builds up a
Jacobson, B.   +2 more
core   +1 more source

Development in HVDC Circuit Breaker - A Review

open access: yesJournal of Electrical Systems
The increasing adoption of High Voltage Direct Current (HVDC) systems for efficient long-distance power transmission and renewable energy integration necessitates advanced protection mechanisms to ensure system stability and reliability. Among these, HVDC circuit breakers play a pivotal role in interrupting fault currents and safeguarding HVDC networks.
openaire   +1 more source

Appropriate Protection Scheme for DC Grid Based on the Half Bridge Modular Multilevel Converter System

open access: yesEnergies, 2019
The half bridge (HB) modular multilevel converter (MMC) technology is considered a breakthrough to mitigate the shortcomings of the conventional voltage source converter (VSC) in high-voltage direct-current (HVDC) grid application.
Ho-Yun Lee   +4 more
doaj   +1 more source

Optimisation of passive system components to minimise DC circuit breaker stresses in multi-terminal HVDC systems

open access: yes, 2015
HVDC circuit breaker designs have commonly included additional series inductance to reduce the rate of rise of current during the initial transient period after a fault occurs, minimising the peak current stress that the circuit breaker must endure.
Xu, Lie   +4 more
core  

Closing performance of the Thomson-coil actuator for a 110 kV FMS

open access: yesThe Journal of Engineering, 2019
In the 500 kV hybrid high-voltage direct current (HVDC) circuit breaker, there are five 110 kV fast mechanical switches (FMSs) in the nominal current path.
Yannan Zhou   +5 more
doaj   +1 more source

A hybrid multi-port HVDC circuit breaker that improves interruption and reset time through shared energy dissipation and fault current regeneration

open access: yesResults in Engineering
This paper proposes a Hybrid Multi-Port DC Circuit Breaker (HMPDCCB) design that addresses the limitations of existing hybrid DC circuit breakers (HDCCBs), such as high cost, complexity, and slow response to high fault current and voltage demands.
Qumrish Arooj, Imtiaz Ahmad Taj
doaj   +1 more source

Comparison and analysis of the fault arc characteristics of flexible DC transmission lines

open access: yesThe Journal of Engineering, 2019
VSC-HVDC grid is one of the important development directions of the smart grid in the future. The arc characteristics of transient fault on the transmission line are the theoretical basis for determining reclosing time and reclosing strategy of DC ...
Botong Li   +3 more
doaj   +1 more source

Fault current testing envelopes for VSC HVDC circuit breakers

open access: yesIET Generation, Transmission & Distribution, 2015
Circuit breakers for high voltage direct current (HVDC) applications are seen as a required technological step in the development of HVDC grids. The development of several new HVDC circuit breaker prototypes indicate that this step may be achieved in the years to come.
Barnes, Michael   +4 more
openaire   +3 more sources

HVDC circuit breakers modeling in multiterminal grids

open access: yes, 2017
Transition towards sustainable energy systems lead to transformation of the existing electrical power grids. One of the key enabling technologies for this transformation is high voltage direct current (HVDC) technology that has range of advantages ...
Yanushkevich, Alexander
core  

Novel fault current-limiting scheme for MMC-based flexible HVDC system

open access: yesThe Journal of Engineering, 2019
Currently, the flexible direct current transmission technique becomes a research focus around the world, and be applied in power engineering projects gradually.
Yueyang Ma   +4 more
doaj   +1 more source

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