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Operating DC Circuit Breakers With MMC [PDF]
IEEE Transactions on Power Delivery, 2018 High Voltage Direct Current (HVDC) grids may be protected from dc faults through the application of HVDC circuit breakers. Recent advances in dc circuit breaker technologies may allow faults in the dc grid to be cleared without a permanent loss of power to the connected ac grids.
Oliver Cwikowski +4 more
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Interlink Hybrid DC Circuit Breaker [PDF]
IEEE Transactions on Industrial Electronics, 2018 —To protect HVDC grids from DC faults, the concept of a hybrid DC circuit breaker is widely accepted due to its low conduction losses and fast interruption speed. For a well-built DC grid, a massive number of hybrid DC circuit breakers have to be installed. This will lead to high capital costs.
Chuanyue Li +2 more
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Parameters of DC high-speed circuit-breakers
MATEC Web of Conferences, 2018 DC high-speed circuit-breakers (HSCB) are the basic protection to cut off short-circuit and overload currents. People’s and railway infrastructure devices’ safety depend on their reliability and parameters.
Rojek Artur
doaj +2 more sources
DC / DC converters as DC circuit-breakers in HVDC networks operation [PDF]
2014 16th European Conference on Power Electronics and Applications, 2014 This paper presents the modeling and control of a DC/DC bidirectional converter suitable for medium voltage and power applications in Multi-Terminals HVDC (MT-HVDC) grids. Moreover its use as DC circuit-breaker is described. This is a new concept, against the contemporary studies of DC breakers, which could help for the implementation of MT-HVDC ...
Jiménez Carrizosa, Miguel +6 more
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Superconducting Interface for a DC Circuit Breaker [PDF]
8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016), 2016 High voltage direct current (HVDC) circuit breakers are a key technology to enable fault management for multi terminal DC (MTDC) networks. DC circuit breakers using superconductors for current limiting have been proposed previously and experimentally tested at low voltage levels.
Pei, Xiaoze +2 more
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The Journal of Engineering, 2019 In hierarchically connected UHV DC projects, the 1000 kV AC filter sub-bank in converter station is provided with two 500 kV circuit breakers. To determine the test DC component decay time constant when breakers break short-circuit current, relevant DC ...
Li Zhenqiang +3 more
doaj +2 more sources
Contact arc time – important parameter of DC high-speed circuit-breakers [PDF]
MATEC Web of Conferences, 2019 The parameters of DC high-speed circuit-breakers (HSCB) and test methods are specified in the standards. These standards define requirements of the circuit breakers opening time and the total breaking time.
Rojek Artur, Skrzyniarz Marek
doaj +2 more sources
Advanced Test Circuit for DC Circuit Breakers
, 2018 QC ...
Augustin, Tim +2 more
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A novel controllable capacitor commutation based superconducting hybrid direct current breaker [PDF]
Scientific ReportsFeaturing low power loss and high reliability, voltage source converter medium voltage direct current (VSC-MVDC) systems have been widely employed for grid-tied renewable energy applications.
Yang Xu +5 more
doaj +2 more sources
Bridge-Type Integrated Hybrid DC Circuit Breakers [PDF]
IEEE Journal of Emerging and Selected Topics in Power Electronics, 2020 The inclusion of a large number of controllable semiconductor devices in conventional hybrid dc circuit breakers (HCBs) may significantly increase the cost of an HVdc grid protection scheme. In an attempt to reduce this cost, this paper proposes the use of two novel topologies of bridge-type integrated HCBs (BT-ICBs).
Sheng Wang +4 more
openaire +3 more sources