Results 71 to 80 of about 200 (126)
Energies, 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
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Closing performance of the Thomson-coil actuator for a 110 kV FMS
The 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
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Results in EngineeringThis 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
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Comparison and analysis of the fault arc characteristics of flexible DC transmission lines
The 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
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Novel fault current-limiting scheme for MMC-based flexible HVDC system
The 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
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An improved fault current limiter for hybrid DC circuit breakers in large-scale MMC-HVDC systems
Mehran University Research Journal of Engineering and TechnologyDesigning multi-terminal HVDC systems presents significant challenges, particularly in control, modeling, and protection. One of the most critical concerns is the protection of these systems from DC short circuits.
Rashid Hussain Chandio +3 more
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Analysis of Arc Re-Ignition in Vacuum Interrupter-Based HVdc Circuit Breakers
IEEE AccessThe protection of HVdc systems has long been challenged by the absence of natural current zero-crossing, typically addressed using L-C branches. However, the phenomenon of multiple arc reignitions in vacuum interrupter (VI) based HVdc circuit breakers ...
Tamer Eliyan +3 more
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Evaluation of the efficacy of transient overvoltages suppression measures in different wind farm topologies using SF6 circuit breaker. [PDF]
Sci Rep, 2023 Eliyan T, Wadie F.
europepmc +1 more source
A novel thyristor‐based hybrid DC circuit breaker with short arcing capability
High VoltageMulti‐terminal flexible high‐voltage direct current (HVDC) transmission and DC grid technology are developing rapidly. The hybrid DC circuit breaker (HCB) has broad application prospects in the field of HVDC transmission and DC power grid.
Guanlong Jia +4 more
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Research on the Press-pack IGBT with High SCSOA
Kongzhi Yu Xinxi Jishu, 2017 DC breaker is one of the main equipment of HVDC system converter station. As an essential component of DC breaker, the electrical performance and reliability of the press-pack IGBT (insulated gate bipolar transistor) are particularly important.
LENG Guoqing +5 more
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