Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Bruno Jorge de Oliveira e Sousa"'
Autor:
Muhammad Humayun, Matti Lehtonen, Bruno Jorge de Oliveira e Sousa, Atte Pihkala, R. John Millar
Publikováno v:
IEEE TRANSACTIONS ON POWER SYSTEMS. 32(2):978-988
This paper formulates a block-layer method for the reliability assessment of distribution systems. The characteristics of the method include: 1) identifying the impact of distribution component reliability on the system and load points using a block-
Autor:
Amir Safdarian, Bruno Jorge de Oliveira e Sousa, Muhammad Humayun, Mubbashir Ali, Matti Lehtonen, Mahmud Fotuhi-Firuzabad, Merkebu Z. Degefa
Publikováno v:
IEEE Transactions on Power Systems. 31:632-641
The management of transformers’ capacity is a vital task for planners and asset managers due to their high cost. This paper proposes an optimization model for capacity management of transformers in a substation over long-run. The model considers th
Publikováno v:
2018 Power Systems Computation Conference (PSCC).
Parallel resonances in electrical power systems can considerably increase levels of harmonic voltages, which may lead to a component breakdown. Major capacitive network components, such as shunt capacitors, can significantly change the network harmon
Publikováno v:
International Journal of Electrical Power & Energy Systems. 63:555-564
This study presents a reliability assessment tool for meshed subtransmission networks in a three-layer structure. In this model, the three critical zones of influence, containing four blocks, are determined, described and quantified as reliability pa
Autor:
A.M. Ceschin, Bruno Jorge de Oliveira e Sousa, Janaina Gonçalves Guimarães, Joao Paulo Dos Santos, H. H. Guimarães
Publikováno v:
ECS Transactions. 14:593-596
In this paper, we present the fabrication of an all polymer diode, including the substrate and the electrodes. An insulating film of polymethylmethacrylate (PMMA) is sandwiched between two polymer electrodes: a poly(3,4-ethylenedioxythiophene)/poly(4
Publikováno v:
AFRICON
This research investigates the cost burden of voltage sags and outages of two feeders in typical rural and urban environments in Finland, and compares the effect of different voltage sags on their adjacent feeders. The two tested feeders were each sa
Autor:
Matti Lehtonen, Atte Pihkala, Bruno Jorge de Oliveira e Sousa, Eero Saarijärvi, Robert John Millar
Publikováno v:
2015 IEEE 5th International Conference on Power Engineering, Energy and Electrical Drives (POWERENG).
The availability of electricity is of paramount importance in urban distribution networks, and one planning consideration is the way medium voltage network is protected against faults in the feeding primary substation or high voltage network. One app
This paper provides comparison of the outage and the voltage sag costs in the 110-kV subtransmission network in the municipality of Helsinki. The main focus is to identify the influence of both voltage sag and failure rates to meshed grids, regarding
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::56804544b2e2dce8a366bd13de0247d5
https://doi.org/10.1109/ISGTEurope.2014.7028744
https://doi.org/10.1109/ISGTEurope.2014.7028744
Publikováno v:
ISGT Europe
In the municipality of Helsinki, plans to expand its subtransmission network in the next few years predict excessive high short-circuit levels in numerous substations. The existing network embodies overhead lines (OHL) and underground cables (UGC), i
Publikováno v:
International Review of Electrical Engineering (IREE). 10:221
This paper investigates the economic impact of installing underground cables and overhead lines directly connected to a selected test substation on the delivery point. For this, a two-part assessment performs firstly a sensitivity analysis to measure