Cascaded commutation circuit for a hybrid DC breaker with dynamic control on fault current and DC breaker voltage [PDF]
, 2017 This paper proposed a cascaded commutation circuit based on current commutation approach for low-to-medium voltage DC fault current interruption, without snubber circuits, which slows the fault current di/dt prior to current-zero and the rate of rise of ...
Ding, Xiao +6 more
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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
openaire +2 more sources
CSEE Journal of Power and Energy Systems, 2019 The paper presents an economic hybrid circuit breaker for limiting and interrupting the faults in DC railways substations. For fast fault current interruption, the hybrid breaker incorporates high speed mechanical contacts actuated by power semiconductor
Saady Hasan
doaj +1 more source
Research on DC power flow controllable multi-port DC circuit breaker
Energy Reports, 2022 For the problem of fault isolation and power flow control in DC grid, this paper proposes a DC power flow controllable multi-port DC circuit breaker. Under the normal operation, this breaker has the function of DC power flow regulation, which is used to ...
Feng Xu +5 more
doaj +1 more source
Topology and control of a novel hybrid HVDC circuit breaker with self-powered capability
Energy Reports, 2022 Power supply for IGBT drive circuit of HVDC circuit breaker is a great challenge in practical engineering. At present, most of the HVDC circuit breakers rely on external power sources. This paper proposes a self-powered hybrid HVDC circuit breaker.
Huangqing Xiao +4 more
doaj +1 more source
DC/DC converters based on hybrid MMC for HVDC grid interconnection [PDF]
, 2015 This paper presents a multi-terminal high-power DC/DC converter configuration based on hybrid MMC topology with fault blocking capability for interconnecting HVDC systems.
Xu, Lie, Yao, Liangzhong, Zeng, Rong
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Determination of protection system requirements for DC UAV electrical power networks for enhanced capability and survivability [PDF]
, 2011 A growing number of designs of future Unmanned Aerial Vehicle (UAV) applications utilise dc for the primary power distribution method. Such systems typically employ large numbers of power electronic converters as interfaces for novel loads and generators.
Burt, Graeme +3 more
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Operation Characteristics for the Superconducting Arc-Induction Type DC Circuit Breaker
Energies, 2020 The multi-terminal direct current network is expected to commercialize while carrying out projects related to DC power systems worldwide. Accordingly, it is necessary to develop a DC circuit breaker required for the DC power system.
Sangyong Park, Hyosang Choi
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Hybrid DC circuit breaker with coupled inductor for automatic current commutation [PDF]
, 2020 HVDC transmission systems using voltage source converters (VSC-HVDC) have been identified as an attractive solution for bulk power delivery over long distance. However if DC grids are to be built using this technology, fast DC circuit breakers are needed.
Barnes, Mike +3 more
core +2 more sources
Investigations on the safe stroke of mechanical HVDC vacuum circuit breaker
The Journal of Engineering, 2019 Here, a DC vacuum arc interruption test based on the hybrid high-speed actuator and the method of commutation is carried out in the synthetic loop system. The safe stroke is one of the basic breaking parameters.
Ning Xia +5 more
doaj +1 more source