Results 1 to 10 of about 1,984,882 (146)

State estimator and convolutional neural networks-based fault localization approach for modern grids [PDF]

Scientific Reports
Direct current distribution networks get more attention due to the high penetration of renewable energy-based distributed generation. However, these networks face protection challenges like detecting, classifying, and localizing faults.
Jameel Ahmed Bhutto, Sohaib Tahir Chauhdary, Saad Arif, Akbar Niaz, Khaled Alnamasi, Syed Quadir Moinuddin, Shrooq Alsenan, Muhammad Attique Khan   +7 more
doaj   +2 more sources

Optimal Operation of PV Sources in DC Grids for Improving Technical, Economical, and Environmental Conditions by Using Vortex Search Algorithm and a Matrix Hourly Power Flow

Mathematics, 2022
This document presents a master–slave methodology for solving the problem of optimal operation of photovoltaic (PV) distributed generators (DGs) in direct current (DC) networks.
Luis Fernando Grisales-Noreña, Andrés Alfonso Rosales-Muñoz, Brandon Cortés-Caicedo, Oscar Danilo Montoya, Fabio Andrade   +4 more
doaj   +1 more source

Optimal Location and Sizing of DGs in DC Networks Using a Hybrid Methodology Based on the PPBIL Algorithm and the VSA

Mathematics, 2021
In this paper, we propose a master–slave methodology to address the problem of optimal integration (location and sizing) of Distributed Generators (DGs) in Direct Current (DC) networks.
Luis Fernando Grisales-Noreña, Oscar Danilo Montoya, Ricardo Alberto Hincapié-Isaza, Mauricio Granada Echeverri, Alberto-Jesus Perea-Moreno   +4 more
doaj   +1 more source

Modulation of brain networks during MR-compatible transcranial direct current stimulation

NeuroImage, 2022
Transcranial direct current stimulation (tDCS) can influence performance on behavioral tasks and improve symptoms of brain conditions. Yet, it remains unclear precisely how tDCS affects brain function and connectivity.
Amber M. Leaver, Sara Gonzalez, Megha Vasavada, Antoni Kubicki, Mayank Jog, Danny J.J. Wang, Roger P. Woods, Randall Espinoza, Jacqueline Gollan, Todd Parrish, Katherine L. Narr   +10 more
doaj   +1 more source

Power Reversal Algorithm for Resonant Direct Current Transformers for DC Networks

IEEE Access, 2022
The bidirectional resonant DC transformer has all the desired features to drive the development of the DC power distribution networks of the future. This power-electronics converter provides galvanic isolation between DC buses, has desired open loop ...
Renan Pillon Barcelos, Jakub Kucka, Drazen Dujic   +2 more
doaj   +1 more source

Multi-objective optimal power flow considering the multi-terminal direct current

Electrical engineering & Electromechanics, 2021
Introduction. In recent years, transmission systems comprise more direct current structures; their effects on alternating current power system may become significant and important.
B. Ayachi, T. Boukra, N. Mezhoud
doaj   +1 more source

A Mixed-Integer Nonlinear Programming Model for Optimal Reconfiguration of DC Distribution Feeders

Energies, 2020
This paper deals with the optimal reconfiguration problem of DC distribution networks by proposing a new mixed-integer nonlinear programming (MINLP) formulation.
O. D. Montoya, W. Gil-González, J. C. Hernández, D. A. Giral-Ramírez, A. Medina-Quesada   +4 more
doaj   +1 more source

Análisis de estabilidad de convertidores de segundo orden con la metodología de optimización de suma de polinomios cuadráticos

TESEA, Transactions on Energy Systems and Engineering Applications, 2020
This paper presents a non-linear method based on sum-of-squares (SOS), to determine the stability of equilibrium points for the Buck, Boost, Buck-Boost and non-inverter Buck-Boost converters.
Jhon Jairo Herrera-Pérez, Alejandro Garcés-Ruiz   +1 more
doaj   +1 more source

Metaheuristic Optimization Methods for Optimal Power Flow Analysis in DC Distribution Networks

TESEA, Transactions on Energy Systems and Engineering Applications, 2020
In this paper is addressed the optimal power flow problem in direct current grids, by using solution methods based on metaheuristics techniques and numerical methods.
Luis Fernando Grisales Noreña, Oscar Daniel Garzón Rivera, Jauder Alexander Ocampo Toro, Carlos Andres Ramos Paja, Miguel Angel Rodriguez Cabal   +4 more
doaj   +1 more source

A Review on Multi-Terminal High Voltage Direct Current Networks for Wind Power Integration

Energies, 2022
With the growing pressure to substitute fossil fuel-based generation, Renewable Energy Sources (RES) have become one of the main solutions from the power sector in the fight against climate change.
Luís F. Normandia Lourenço, Amira Louni, Gilney Damm, Mariana Netto, Monssef Drissi-Habti, Samuele Grillo, Alfeu J. Sguarezi Filho, Lasantha Meegahapola   +7 more
doaj   +1 more source