Electrical Power System Analysis
Mostrando 1-12 de 83 artigos, teses e dissertações.
-
1. Equipment for Monitoring Synchronous Generators Condition through External Magnetic Field Waveforms
Abstract This paper presents an equipment for monitoring synchronous generators condition through characteristics of the time derivative of the external magnetic field. The developed monitoring methodology allows the identification of established or incipient faults, by detecting changes in the magnetic signature of the synchronous generator. In this methodo
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
-
2. Novel Design of a Hybrid Superconducting Fault Current Limiter with Controlled Solid-State Device
Abstract Fault current limiters are essential devices used to protect the power system and its equipment against high levels of fault current, which are growing up due to the increase of new power sources. This paper proposes a novel design of a Hybrid Superconducting Fault Current Limiter (Hybrid SFCL), which is composed basically by thyristors in series wi
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2021-06
-
3. Performance Analysis of Small Grid Connected Photovoltaic Systems
Abstract The acceptance and deployment of electric power from sustainable sources, which are less polluting than fossils, have been a consensus throughout society. Specially, the growth of the installed capacity in photovoltaic energy has been considerable in distributed generation. In order to properly take advantage of this growing demand, it is necessary
Braz. arch. biol. technol.. Publicado em: 25/11/2019
-
4. Analysis of Production and Consumption of Electric Energy in the Green Office of UTFPR in Curitiba
ABSTRACT The increasing demand for electricity and the scarcity of resources, require renewable energy sources and efficient equipment that reduce the consumption of electricity. The Green Office (GO) of the Universidade Tecnológica Federal do Paraná (UTFPR) is a sustainable building that uses strategies to reduce impacts to the environment, one of them be
Braz. arch. biol. technol.. Publicado em: 29/11/2018
-
5. Power Flow Analysis and Self-recovery of Electrical Energy Distribution Network Using Artificial Neural Networks
ABSTRACT A computational model for self-recovery of electricity distribution network was developed to simulate it, emulated by the IEEE 123 node model. The electrical system considered has automatic switches capable of identifying a momentary failure in the line and finding the best reconfiguration for its reclosing. An artificial neural network (ANN), backp
Braz. arch. biol. technol.. Publicado em: 29/10/2018
-
6. Study of the Performance Reduction Due to the Dirt Effect in the Photovoltaic Systems of UTFPR - Curitiba
ABSTRACT Photovoltaic systems have been consolidated in the global energy scenario as an option of low environmental impact energy generation, high reliability and great applicability in urban centers, acting like energy generators near the point of consumption. The Federal University of Technology of Paraná (UTFPR), with the proposal of testing the perform
Braz. arch. biol. technol.. Publicado em: 29/10/2018
-
7. Analysis of the Impacts of the Electrification of the Vehicle Fleet in the Electric Power System in Curitiba
ABSTRACT The Market share of electrical vehicles has been rising in the past few years and tends to rise even more. According to the International Energy Agency, an increase of 50% in the number of electrical vehicles is expected. Whilst that increase is beneficial from a greenhouse gases emissions drop point of view, that rise could, on the other hand, repr
Braz. arch. biol. technol.. Publicado em: 22/10/2018
-
8. ENERGY EFFICIENCY OF A CENTER PIVOT IRRIGATION SYSTEM
ABSTRACT This study aimed to evaluate the energy efficiency of a center pivot irrigation system operating in a terrain of variable topography. Values of Pumping Energy Efficiency (PEE), Supply Energy Efficiency (SEE), Global Energy Efficiency (GEE) and Specific Energy (Es in kWh m-3) computed at 18 different angular positions of the lateral line were used as
Eng. Agríc.. Publicado em: 2018-04
-
9. Low cost system to measure active power in electrosurgical units
Abstract Introduction: The real-time measurement of active power delivered to patients during the electrosurgical act is still an engineering challenge. Besides, there is no electrosurgical unit on the market capable of doing it according to the normative requirement. Methods This work presents the design of an electronic structure capable to probe the ele
Res. Biomed. Eng.. Publicado em: 09/11/2017
-
10. MATHEMATICAL MODELING OF THE ELECTRIC CURRENT GENERATION IN A MICROBIAL FUEL CELL INOCULATED WITH MARINE SEDIMENT
Abstract Microbial fuel cells (MFC) are electrochemical devices that utilize the ability of some microorganisms to oxidize organic matter and transfer electrons resulting from their metabolism to an insoluble acceptor. The goal of the present study was to model the kinetics of electrical current generation from an MFC inoculated with marine sediment. For thi
Braz. J. Chem. Eng.. Publicado em: 2017-01
-
11. Combined Cycle Performance Evaluation and Dynamic Response Simulation
ABSTRACT Power plants operating in combined cycle present higher thermal efficiency (over 60%) and increased power generation when compared to traditional simple cycles, such as gas or steam turbines operating alone. Considering that the power plant evaluated in this paper is already operational, a further development concerning to the power plant control sy
J. Aerosp. Technol. Manag.. Publicado em: 2016-12
-
12. Long-term correlation of the electrocorticogram as a bioindicator of brain exposure to ionizing radiation
Understanding the effects of radiation and its possible influence on the nervous system are of great clinical interest. However, there have been few electrophysiological studies on brain activity after exposure to ionizing radiation (IR). A new methodological approach regarding the assessment of the possible effects of IR on brain activity is the use of line
Braz J Med Biol Res. Publicado em: 12/06/2015