A Unidirectional DC-DC Autotransformer for DC Grid Application [PDF]
Energies, 2018 Conventional unidirectional DC-DC converters for DC grid application employ DC-AC-DC two-stage conversion technology and suffer from high converter cost and power loss.
Meng Zhou +4 more
doaj +4 more sources
Distributed Control of DC Grids: Integrating Prosumers’ Motives [PDF]
IEEE Transactions on Power Systems, 2022 In this paper, a novel distributed control strategy addressing a (feasible) psycho-social-physical welfare problem in islanded Direct Current (DC) smart grids is proposed. Firstly, we formulate a (convex) optimization problem that allows prosumers to share current with each other, taking into account the technical and physical aspects and constraints ...
M. Cucuzzella +8 more
openaire +5 more sources
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
doaj +1 more source
PFC Topologies for AC to DC Converters in DC Micro-Grid [PDF]
, 2016 With increasing dominance of renewable energy resources and DC household appliances, the novelty of DC micro grid is attracting significant attention. The key interface between the main supply grid and DC micro grid is AC to DC converter.
Ashraf, Muhammad +3 more
core +1 more source
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
doaj +1 more source
Plug-and-play Solvability of the Power Flow Equations for Interconnected DC Microgrids with Constant Power Loads [PDF]
, 2019 In this paper we study the DC power flow equations of a purely resistive DC power grid which consists of interconnected DC microgrids with constant-power loads.
De Persis, Claudio +2 more
core +2 more sources
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
DC fault isolation study of bidirectional dual active bridge DC/DC converter for DC transmission grid application [PDF]
, 2015 Fast isolation and detection of DC faults is currently a limiting factor in high power DC transmission grid development. Recent research has shown that the role of DC/DC converters is becoming increasingly important in solving various DC grid challenges ...
Aboushady, Ahmed A. +2 more
core +2 more sources
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
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
doaj +1 more source