Results 41 to 50 of about 777,862 (195)
IEEE Access, 2021 In this study, a LCC-VSC hybrid HVDC transmission system was taken as an example. The valve and neutral overvoltage of the hybrid HVDC system were simulated and then calculated at the VSC converter station by installing a blocking diode and a DC circuit ...
Wang Dongju, Zhou Hao
doaj +1 more source
Interruption limits of mechanical circuit breakers and circuit upgrades for current injection in HVDC circuit breakers [PDF]
High Voltage, 2020 Current injection circuit breakers consist of a mechanical interrupter (MI) with a current injection and an energy dissipation branch in parallel. The performance of the complete device is largely determined by mechanical operation time and interruption performance of the MI.
Tim Schultz +2 more
openaire +3 more sources
4-Pole Hybrid HVDC Circuit Breaker for Pole-to-Pole (PTP) Fault Protection
IEEE Access, 2022 Numerous problems have emerged with the development of HVDC transmission technology. One of them is the fault current that occurs when there is an issue in the line. In particular, in the case of a PTP (pole-to-pole) fault, a DCCB design suitable for the
Geon Kim +7 more
doaj +1 more source
Energy Reports, 2020 The flexible DC transmission system needs a DC circuit breaker to remove and isolate the bipolar short-circuit fault to prevent the excessive short-circuit current from damaging the DC transmission system.
Can Ding +3 more
doaj +1 more source
Current Limiting Hybrid High Voltage DC Circuit Breaker With Reclosing Function Limiting
Journal of Applied Science and Engineering, 2022 DC circuit breaker is the core equipment for the safe operation of DC transmission system. A current limiting hybrid HVDC circuit breaker topology with reclosing function is proposed in this paper.
Baoge Zhang +4 more
doaj +1 more source
Optimisation of passive system components to minimise DC circuit breaker stresses in multi-terminal HVDC systems [PDF]
, 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 +3 more sources
A control method of fault current in MT-HVDC grid based on current limiter and circuit breaker [PDF]
, 2021 In order to realize selective isolation of fault lines in multi-terminal high voltage DC (MT-HVDC) grids, it is necessary to ensure that the sound lines can still transmit power normally after the grounding fault occurs in a DC power network.
Wang, Sihua, Zhao, Lei, Zhou, Lijun
core +1 more source
Systematic Approach to HVDC Circuit Breaker Sizing [PDF]
IEEE Transactions on Power Delivery, 2020 High-voltage direct current (HVDC) grids can be protected by HVDC circuit breakers (DCCB) to selectively clear DC side faults and assure continuous operation of the healthy parts in the grid. Line inductors in series with DCCBs are essential to reduce the rate of rise of the fault current and to slow down the voltage decline in the healthy parts of the
Abedrabbo, Mudar +2 more
openaire +1 more source
Integrated HVDC Circuit Breakers With Current Flow Control Capability [PDF]
IEEE Transactions on Power Delivery, 2018 Postprint (author's final draft)
Cwikowski, Oliver +6 more
openaire +5 more sources
Interlink Hybrid DC Circuit Breaker [PDF]
, 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.
Chuanyue Li +5 more
core +1 more source