Results 41 to 50 of about 624 (193)
Frontiers in Energy Research, 2023 A massive number of DC circuit breaker is usually necessary to be installed to protect HVDC grids from DC faults, this will lead to high capital costs because large number of expensive IGBT-in-series are used.
Qingpeng Zeng +9 more
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High Voltage, 2017 Multi-terminal voltage-sourced converters (VSC) high-voltage direct current (HVDC) transmission system is expected to play a vital role in future power systems.
Bin Chang +6 more
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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
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Experimental Modeling of Forward Recovery Characteristics of IGBT for DC Circuit Breaker
Zhongguo dianli, 2021 DC circuit breaker is the main means to clear the faults in VSC-HVDC power grid. Before action of the hybrid DC circuit breaker, the IGBT in the transfer branch is in a state of zero voltage and zero current.
Hong SHEN +4 more
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Integrated HVDC Circuit Breakers With Current Flow Control Capability [PDF]
IEEE Transactions on Power Delivery, 2018 Two key problems in meshed high-voltage direct current (HVDC) transmission grids are managing line power flows and protection against dc faults. Current flow controllers (CFCs) will be required to balance cable currents in meshed dc grids, in order to prevent individual line power capacity limits restricting overall power flow in the grid.
Cwikowski, Oliver +6 more
openaire +5 more sources
, 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 +7 more
core +1 more source
Reduced DC circuit breaker requirement on mixed converter HVDC networks [PDF]
, 2015 Recently proposed meshed HVDC networks include both converters and DC circuit breakers, and the fault currents experienced and therefore the capacity requirement of circuit breakers are dependent on the topology of converters used on the network.
Green, TC +3 more
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Converter for Voltage Source HVDC Links: Current Status and Future Challenges
Edison Journal for Electrical and Electronics Engineering, 2023 This article discusses the current state of DC HVDC technology. The article describes the history of DC HVDC technology, starting with its early development as a voltage source, and then discusses the introduction of line-cutting into current designs ...
Atheer Ahmed Kadhim +2 more
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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
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Research on the Modification Plan of HVDC Transfer Switch Arrester
南方能源建设, 2022 [Introduction] During the earth return and metallic return mode conversion of China's HVDC transmission projects in operation, several MRTB (metallic return transfer breaker) or ERTB (earth return transfer breaker) oscillation platform arrester damage ...
LU Yuxin +5 more
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