A5078715828- Power Quality and Harmonics
- Microgrid Control and Optimization
- Smart Grid Energy Management
- Advanced Electrical Measurement Techniques
- Power System Optimization and Stability
- Optimal Power Flow Distribution
- Islanding Detection in Power Systems
- Magnetic Properties and Applications
- Smart Grid Security and Resilience
- Power Line Communications and Noise
- Electromagnetic Compatibility and Noise Suppression
- Machine Fault Diagnosis Techniques
- Energy Load and Power Forecasting
- Power Transformer Diagnostics and Insulation
- Power Systems Fault Detection
- HVDC Systems and Fault Protection
- Advanced Battery Technologies Research
- Electric Vehicles and Infrastructure
- Real-time simulation and control systems
- Multilevel Inverters and Converters
- Frequency Control in Power Systems
- Power System Reliability and Maintenance
- Wind Turbine Control Systems
- Photovoltaic System Optimization Techniques
- Lightning and Electromagnetic Phenomena
Universidade Federal de Itajubá
2016-2025
Universidade de São Paulo
2010-2025
Escola Universitária Vasco da Gama
2024
Escola Bahiana de Medicina e Saúde Pública
2023
Universidade Federal de Pelotas
2023
Vale (Brazil)
2023
Universidade Federal de Lavras
2021-2023
Pontifícia Universidade Católica de São Paulo
2023
Faculdade de Ciências Médicas da Santa Casa de São Paulo
2021-2023
American Society for Parenteral and Enteral Nutrition
2023
While energy storage technologies do not represent sources, they provide valuable added benefits to improve stability power quality, and reliability of supply. Battery have improved significantly in order meet the challenges practical electric vehicles utility applications. Flywheel are now used advanced nonpolluting uninterruptible supplies. Advanced capacitors being considered as for quality Superconducting systems still their prototype stages but receiving attention The latest technology...
This paper proposes an impedance-based analytical method for modeling and analysis of harmonic interactions between the grid aggregated distributed generation (DG) inverters. The root cause interaction/resonance problems is impedance-network quasi-resonance effective output impedance inverter equivalent at connection point. Starting with inverter, a Norton model derived. Comparing switching average simulation results show effectiveness model. that limits should be specified used as extra...
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> Some of the most remarkable issues related to interharmonic theory and modeling are presented. Starting from basic definitions concepts, attention is first devoted sources. Then, assessment considered with particular problem frequency resolution computational burden associated analysis periodic steady-state waveforms. Finally, different kinds sources extension classical models developed for power...
This paper presents three harmonic simulation test systems. The purpose is to demonstrate guidelines for the preparation and analysis of problems through case studies examples. systems can also be used as benchmark development new methods evaluation existing software.
The Hilbert-Huang method is presented with modifications, for time-frequency analysis of distorted power quality signals. empirical mode decomposition (EMD) enhanced masking signals based on fast Fourier transform (FFT), separating frequencies that lie within an octave. Further, the instantaneous frequency and amplitude constituent modes obtained by Hilbert spectral are improved demodulation. shows promising time-frequency-magnitude localization capabilities performance new technique...
This paper discusses historical and technical events in the U.S. Europe over last few years that are aimed at modernizing electric power grid. The federal government has ratified "smart grid initiative" as official policy for electricity including unprecedented provisions timely information control options to consumers deployment of "smart" technologies. European countries unified researching developing related technologies through various structures supported by Union. presents development...
This paper presents a review with concise description and analysis of the fundamentals, characteristics, analytical details, merits, drawbacks associated existing methods in frequency time domain for harmonic practical power networks. The are centered on developed domain, hybrid frequency-time respectively. Validation reviewed analysis, against one widely accepted digital simulators, such as EMTP, EMTDC, or MATLAB/SIMULINK, is reported cited individual contributions.
This paper presents the economic analysis and optimal energy management of a grid-connected MG that comprises renewable resources different battery storage technologies with characteristics such as initial charge, depth discharge, number charging/discharging cycles to minimize total operating cost system by maximizing benefits BSS, minimizing investment replacement operation maintenance DGs. Several constraints are considered, output power limits distributed generators, imported from or...
This work investigates the use of advanced signal processing and deep Learning for pattern recognition classification signals with power quality disturbances. For this purpose, continuous wavelet transform is used to generate 2-D images time–frequency representation from voltage The aims convolutional neural networks classify data according images' distortion. In implementation artificial intelligence, specific stages design, training, validation, testing were carried out a model elaborated...
Wavelets are a recently developed mathematical tool for signal analysis. Informally, wavelet is short-term duration wave. used as kernel function in an integral transform, much the same way that sines and cosines Fourier analysis or Walsh functions To date, primary application of wavelets has been areas processing, image compression, subband coding, medical imaging, data seismic studies, denoising data, computer vision sound synthesis. Here, authors describe how may be power system...
This article focuses on problems and issues related to PQ power system diagnostics, in particular those where signal processing techniques are extremely important. is a general term that describes the quality of voltage current waveforms. include all electric or disturbances supply prevent end-user equipment from operating properly.
Due to the large-scale implementation of distributed generation, power delivery system is changing gradually from a "vertically" "horizontally" controlled and operated structure. This transition has prompted emergence active distribution network (ADN) concept as an efficient flexible deal with various challenging issues. paper addresses multiagent (MAS) suitable technology manage autonomous control actions perform coordination in ADN. In this agent-based ADN smart router implemented, which...
The increasing incorporation of renewable energy sources and the emergence new forms patterns electricity consumption are contributing to upsurge in complexity power grids. A bottom-up-agent-based approach is able handle environment, such that system reliability can be maintained costs reduced. However, this leads possible conflicting interests between maintaining secure grid operation market requirements. This paper proposes a strategy solve order achieve overall optimal performance supply...
The scope of this paper is to provide a review on the topic demand side management. A historical overview provides critical insight applied cases, while discovery new evidence calls for reconsideration design response control schemes. developments at are analyzed, and philosophical considerations made with respect envisioned energy management systems. Finally, authors classify schemes based formulation rate structures employed technology. This classification follows order, addresses both...
Harmonic distortions at a point of common coupling (PCC) are caused by the harmonic sources in both supply system and customer facilities. In order to verify compliance with limits for an operating facility, it is essential determine contribution facility measured PCC. Over past many years, significant amount research work has been conducted developing different analysis methods especially assessment methods. A need this line consistent test systems that can be used verify/validate proposed...
This article proposes an adaptive virtual inertia control system for stable operation of microgrids: it theoretically improves recent related results in the literature. The overall is conceived to provide ancillary services support (namely, enhanced frequency regulation with inertial response and voltage support) ac/dc microgrid that consists a dc bus providing power ac one, being, turn, composed diesel generator loads. voltages currents are controlled via nonlinear algorithm based on...
This paper represents Part I of a two-part article which summarizes the probabilistic aspects harmonics in electric distribution systems. first part reviews problems associated with direct application fast Fourier transform to compute harmonic levels nonsteady state distorted waveforms, and various ways describe recorded data statistical terms. Each description is applied set for illustration purposes.
This paper reviews the common practice and analytical models for representation of aggregate linear load in harmonic propagation distortion studies. Simulation results this demonstrate high sensitivity to model type used represent load. Comparison several literature shows a significant difference on system impedance around dominant resonance. The recommends comprehensive modeling approach that accounts all major components modern including electronic background distortion.
This paper represents the second part of a two-part article reviewing state art probabilistic aspects harmonics in electric power systems. It includes tools for calculating probabilities rectangular and phasor components individual as well multiple harmonic sources. A procedure determining statistical distribution voltages resulting from dispersed random current sources is reviewed. Some applications representation are also discussed.