Results 21 to 30 of about 102,634 (167)
The Online Connection of MMC to DC-grid Based on DC Breaker
Zhongguo dianli, 2020 The fast and reliable online connection of modular multilevel converter (MMC) to DC grid is one of the problems needing to be solved urgently in practice.
Bin YUAN +4 more
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A grid interface current control strategy for DC microgrids
CES Transactions on Electrical Machines and Systems, 2021 In this paper, a grid interface current control strategy is presented for a DC microgrid, which aims to reduce the disturbance from PV generation and the load variation to the main grid without a grid interface converter.
Muhannad Alshareef +3 more
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Knowledge-graph-enhanced and LLM-guided fault diagnosis for VSC-HVDC systems [PDF]
AIP AdvancesAccurate fault diagnosis in voltage-source-converter high-voltage direct-current (VSC-HVDC) systems is vital for grid stability, yet existing data-driven methods often lack interpretability and robustness under complex operating conditions.
Yongwen Lan +3 more
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Research on key technologies in ±1100 kV ultra-high voltage DC transmission
High Voltage, 2018 Based on completely mastering ±800 kV transmission technologies, the first ±1100 kV direct current (DC) transmission demonstration project is being constructed in China.
Zehong Liu +4 more
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Influence of the structure of transmission line on harmonics distribution in DC system
The Journal of Engineering, 2019 The transmission distance of DC project is always long, and along the transmission distance, the structure of lines and towers varies according to local environment. It is hard to build a precise harmonic model composed of different sections of line with
Ji Yiming, Wu Fangjie, Zhang Yanbin
doaj +1 more source
A Simplified Control Method for Tie-Line Power of DC Micro-Grid
Energies, 2018 Compared with the AC micro-grid, the DC micro-grid has low energy loss and no issues of frequency stability, which makes it more accessible for distributed energy. Thus, the DC micro-grid has good potential for development.
Yanbo Che +4 more
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A modular multilevel DC‐DC converter with self‐energy equalization for DC grids [PDF]
IET Renewable Power Generation, 2021 Abstract Medium‐/High Voltage DC grids are interesting for the integration of renewable energy sources. DC‐DC conversion systems are highly needed for the development of DC grids. Recently, Modular Multilevel Converter (MMC) is the most promising technology for medium‐/high‐voltage applications, but employing the conventional MMC with
Ahmed Elserougi +3 more
openaire +4 more sources
Strategy for DC Microgrid Energy Management Based on RG-DDPG
Zhongguo dianli, 2023 The randomness and intermittency of distributed energy have brought great challenges to the energy management of direct current (DC) microgrids. In order to solve this challenge, a DC microgrid energy management strategy based on reward guidance deep ...
Jianbiao LI +7 more
doaj +1 more source
Topology and control strategy of a multifunctional modular DC fault current limiter
电力工程技术, 2022 DC fault current limiter (FCL) is a key device for suppressing DC short-circuit fault currents,which is important in AC/DC hybrid grid. In this paper,topology of a multifunctional modular DC FCL is proposed,which consists of multiple series-connected ...
ZHANG Liang +4 more
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Power Loss Analysis of a Multiport DC – DC Converter for DC Grid Applications [PDF]
IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society, 2018 In this paper, power losses of a multiport DC – DC converter are analysed. The converter has four bidirectional ports and consists of a triple active bridge and four half bridge converters. As a result, sixteen different operating modes, defined by all combinations of power flow direction, are possible.
Cephas Samende +5 more
openaire +2 more sources