Results 21 to 30 of about 4,888,001 (305)

Estimation of Frequency-Dependent Impedances in Power Grids by Deep LSTM Autoencoder and Random Forest

open access: yesEnergies, 2021
This paper proposes a deep-learning-based method for frequency-dependent grid impedance estimation. Through measurement of voltages and currents at a specific system bus, the estimate of the grid impedance was obtained by first extracting the sequences ...
Azam Bagheri   +3 more
doaj   +1 more source

Power domination on triangular grids

open access: yesCoRR, 2017
Canadian Conference on Computational Geometry, Jul 2017, Ottawa ...
Bose, Prosenjit   +2 more
openaire   +5 more sources

Distributed Day-Ahead Peer-to-Peer Trading for Multi-Microgrid Systems in Active Distribution Networks

open access: yesIEEE Access, 2020
Developing a reasonable, efficient distributed market transaction mechanism is an important issue in distribution systems. The gaming relation between distributed transaction market entities has yet to be fully elucidated in various trading links, and ...
Hong Liu   +5 more
doaj   +1 more source

Hygrothermal ageing characterisation of epoxy resin based on transmission characteristics of microwave resonator with interdigital‐capacitor‐shaped defected ground structure

open access: yesHigh Voltage, 2023
In this article, a method is proposed for the characterisation of epoxy resin thermal and hygrothermal ageing based on microwave resonator with interdigital‐capacitor‐shaped defected ground structure (IDCS‐DGS), which can realise rapid and simple non ...
Mi Xiao, Wei Zhang, Xuguang Wang
doaj   +1 more source

Analysis of Failures in Power Grids [PDF]

open access: yesIEEE Transactions on Control of Network Systems, 2017
This paper focuses on line failures in the transmission system of power grids. Recent large-scale power outages demonstrated the limitations of percolation- and epidemic-based tools in modeling failures and cascades in power grids. Hence, we study failures and cascades by using computational tools and a linearized power-flow model.
Saleh Soltan   +2 more
openaire   +1 more source

Asiakaspalvelun kehittäminen: Case Hitachi ABB Power Grids [PDF]

open access: yes, 2021
Tämä opinnäytetyö oli osa Hitachi ABB Power Gridsin asiakaspalvelun kehittämisprojektia. Toimeksiantaja yrityksen tavoitteena oli löytää yrityksen Front End Sales (FES) -tiimin tuottamasta asiakaspalvelusta kehityskohteita ja kehittää työn avulla näille ...
Tampsi, Rose-Marie
core  

Grid-Forming Converters for Stability Issues in Future Power Grids

open access: yes, 2022
Historically, the power system has relied on synchronous generators (SGs) to provide inertia and maintain grid stability. However, because of the increased integration of power-electronics-interfaced renewable energy sources, the grid’s stability ...
Shahid Aziz Khan   +4 more
core   +1 more source

Combined Duval Pentagons: A Simplified Approach

open access: yesEnergies, 2020
The paper describes a newly proposed combination of the two existing Duval Pentagons method utilized for the identification of mineral oil-insulated transformers. The aim of the combination is to facilitate automatic fault identification through computer
Luiz Cheim, Michel Duval, Saad Haider
doaj   +1 more source

Single Diode Solar Cells—Improved Model and Exact Current–Voltage Analytical Solution Based on Lambert’s W Function

open access: yesSensors, 2022
There are three standard equivalent circuit models of solar cells in the literature—single-diode, double-diode, and triple-diode models. In this paper, first, a modified version of the single diode model, called the Improved Single Diode Model (ISDM), is
Muhyaddin Rawa   +9 more
doaj   +1 more source

Secure and energy-efficient multicast routing in smart grids [PDF]

open access: yes, 2015
A smart grid is a power system that uses information and communication technology to operate, monitor, and control data flows between the power generating source and the end user.
Vasilakis, Vasileios   +4 more
core   +1 more source

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