RSS 1.0Artigos - Engenharia Elétrica - FEIS
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Evaluation of distribution system losses due to load unbalance
Ochoa, Luis F.
; ; Padilha-Feltrin, A. ; (15th Power Systems Computation Conference, PSCC 2005, 2005) [Trabalho apresentado em evento]
Distribution network losses can vary significantly depending on the load unbalance. Here, an analysis of distribution system losses is presented that considers load unbalance and the effect of explicitly represented neutral ... -
Optimal Power Flow with Voltage-Sensitive Loads in Distribution Networks
Cerbantes, Marcel Chuma; Mantovani, José Roberto Sanches ; ; (IEEE Power and Energy Society General Meeting, 2016) [Trabalho apresentado em evento]
Traditionally, the optimal power flow (OPF) assumes a constant (active and reactive) power load model and thus it neglects the effect of the voltage sensitiveness of power load injections. As a consequence, the results ... -
Reliability evaluation of power transformers using partial discharge testing and measurement of low molecular mass acids in insulating oil
; ; ; ; ; ; ; Kurokawa, Sergio (2014 IEEE PES Transmission and Distribution Conference and Exposition, PES T and D-LA 2014 - Conference Proceedings, 2014) [Trabalho apresentado em evento]
The transformer is a fundamental part in electrical power systems. This equipment represents high cost and requires greater attention during maintenance activities. To avoid interruptions, it is important to evaluate the ... -
A necessary and sufficient condition for the stability of interval difference equation via interval Lyapunov equation
; Assunção, Edvaldo; Silva, Geraldo Nunes ; ; (Soft Computing, 2022) [Artigo]
Interval difference equations can be used for modeling biological, economic, or physical systems that, due to lack of information or measurement errors in the input data from real-world applications, contain uncertainties. ... -
Distribution Systems Resilience Improvement Utilizing Multiple Operational Resources
Home Ortiz, Juan M.; Melgar-Dominguez, Ozy D. ; ; ; Mantovani, José Roberto Sanches ; (21st IEEE International Conference on Environment and Electrical Engineering and 2021 5th IEEE Industrial and Commercial Power System Europe, EEEIC / I and CPS Europe 2021 - Proceedings, 2021) [Trabalho apresentado em evento]
This paper presents a strategy based on mixed-integer linear programing (MILP) model to improve the resilience in electric distribution systems (EDSs). The restoration process considers operational resources such as the ... -
Increasing the PV Hosting Capacity in Unbalanced Three-Phase Distribution Networks Through Reconfiguration with Closed-Loop Operation
Macedo, Leonardo H.; ; Home-Ortiz, Juan M. ; Mantovani, José R.S. ; Romero, Rubén ; (21st IEEE International Conference on Environment and Electrical Engineering and 2021 5th IEEE Industrial and Commercial Power System Europe, EEEIC / I and CPS Europe 2021 - Proceedings, 2021) [Trabalho apresentado em evento]
This article presents a novel mixed-integer nonlinear linear programming (MINLP) model to increase the photovoltaic (PV) hosting capacity in unbalanced three-phase electrical distribution systems. The problem considers the ... -
Optimal Power Dispatch of Renewable and NonRenewable Generation through a Second-Order Conic Model
do Carmo Yamaguti, Lucas; Home-Ortiz, Juan M. ; ; ; Mantovani, José Roberto Sanches ; (21st IEEE International Conference on Environment and Electrical Engineering and 2021 5th IEEE Industrial and Commercial Power System Europe, EEEIC / I and CPS Europe 2021 - Proceedings, 2021) [Trabalho apresentado em evento]
This work presents an extension of a second-order conic programming model (SOCP) to handle the multi-objective optimal power dispatch problem considering the probabilistic nature of some parameters related to power demand ... -
MAtheuristic Algorithm Based On Neighborhood Structure to Solve The Reconfiguration Problem of Active Distribution Systems
Romero, Jairo Gonzalo Yumbla; Home-Ortiz, Juan M. ; ; ; Mantovani, José Roberto Sanches ; (21st IEEE International Conference on Environment and Electrical Engineering and 2021 5th IEEE Industrial and Commercial Power System Europe, EEEIC / I and CPS Europe 2021 - Proceedings, 2021) [Trabalho apresentado em evento]
The problem of reconfiguration for active distribution systems is formulated as a stochastic mixed-integer second-order conic programming (MISOCP) model that simultaneously considers the minimization of energy power losses ... -
Multistage Planning Model for Active Distribution Systems and Electric Vehicle Charging Stations Considering Voltage-Dependent Load Behavior
Mejia, Mario A.; Macedo, Leonardo H. ; ; ; Padilha-Feltrin, Antonio (IEEE Transactions on Smart Grid, 2022) [Artigo]
This work proposes a novel mixed-integer linear programming model for the medium-term multistage planning of active distribution systems and electric vehicle charging stations (EVCSs). Investment alternatives include the ... -
Implementations of Full State Feedback Robust Control Designs for Mechanical Systems Using Only Positions or Velocities Output Feedback
Esteves, Lucas M.; Cardim, Rodrigo ; Teixeira, Marcelo C. M. ; ; Ribeiro, Jean M. De S. ; Assuncao, Edvaldo ; Silva, Hyago R. M. (IEEE Access, 2022) [Artigo]
This paper proposes a new design and practical implementation of a robust {\mathcal H} {\infty } control applied to some mechanical systems considering in the controller design full access to the state variables and in the ... -
A Comparison of Frequency-Dependent Soil Models: Electromagnetic Transient Analysis of Overhead Transmission Lines Using Modal Decomposition
Garbelim Pascoalato, Tainá Fernanda; ; ; Kurokawa, Sérgio ; (Energies, 2022) [Artigo]
This article investigates the influence of four causal frequency-dependent (FD) soil models and their impact on the responses of a multiphase overhead transmission line (OHTL) with ground wires, generated by a lightning ... -
Partial Implementation of the Folded Line Equivalent Transmission Line Model in the ATP version of the Electromagnetic Transients Program
Colqui, Jaimis S. L.; ; Torrez, Pablo ; Kurokawa, Sergio (2021 IEEE URUCON, URUCON 2021, 2021) [Trabalho apresentado em evento]
The Folded Line Equivalent (FLE) is a transmission line model that decomposes the nodal admittance matrix of the transmission line into an open-circuit admittance matrix and a short-circuit admittance matrix. The resulting ... -
A New Fitness Function for Sparse Linear Array Evaluation Based on the Point Spread Function
Souza, Julio Cesar Eduardo De; ; ; Higuti, Ricardo Tokio (LAUS 2021 - 2021 IEEE UFFC Latin America Ultrasonics Symposium, Proceedings, 2021) [Trabalho apresentado em evento]
This work proposes a new fitness function for sparse linear array design using the Point Spread Function (PSF), where the energy and entropy are combined. The Arithmetic optimization Algorithm is used as a search mechanism, ... -
Implementation of Modal Domain Transmission Line Models in the ATP Software
; ; ; ; Kurokawa, Sergio (IEEE Access, 2022) [Artigo]
Electromagnetic Transients Program make extensive use of transmission line models for the simulation of electromagnetic transients. This paper proposes a circuit representation of the modal transformation, more specifically ... -
A New Approach to Determine a Distribution Network Usage Fee for Distributed Generators
Marcelo, Jonathan A.; Rupolo, Diogo ; Mantovani, Jose R.S. (Proceedings of 2021 IEEE PES Innovative Smart Grid Technologies Europe: Smart Grids: Toward a Carbon-Free Future, ISGT Europe 2021, 2021) [Trabalho apresentado em evento]
This paper proposes a new approach to determine a distribution network usage fee (DUF) for distributed generators. The methodology is based on distribution of costs associated with use of the distribution network, among ... -
Resilience enhancement in the planning of medium-and low voltage power distribution systems with microgrid formation
Rupolo, Diogo; ; Sanches Mantovani, Jose Roberto (Proceedings of 2021 IEEE PES Innovative Smart Grid Technologies Europe: Smart Grids: Toward a Carbon-Free Future, ISGT Europe 2021, 2021) [Trabalho apresentado em evento]
A resilience enhancement approach applied to medium- and low voltage (MV/LV) systems planning is proposed. In the mathematical model formulation, substations, distribution transformers, cables, switches, renewable generators, ... -
Lightning Current on the Frequency-Dependent Lumped Parameter Model Representing Short Transmission Lines
Sajid Leon Colqui, Jaimis; ; Kurokawa, Sergio ; ; (2021 35th International Conference on Lightning Protection, ICLP 2021 and 16th International Symposium on Lightning Protection, SIPDA 2021, 2021) [Trabalho apresentado em evento]
The purpose of this paper is to investigate the performance of the Frequency-Dependent Lumped Parameter Model (FD-LPM) to adequately represent two distinct overhead transmission lines (OHTLs) subjected to different lightning ... -
Transient Responses on Transmission Lines Located above Frequency-Dependent Soil with Variable Water Content
Pascoalato, Taina F. G.; ; Kurokawa, Sergio ; (2021 Workshop on Communication Networks and Power Systems, WCNPS 2021, 2021) [Trabalho apresentado em evento]
This paper investigates the influence of frequency-dependent soil parameters with variable water content in the transient responses of single-circuit three-phase transmission line (TL) subjected to lightning subsequent ... -
Spatio-Temporal Modeling and Simulation of Asian Soybean Rust Based on Fuzzy System
Zagui, Nayara Longo Sartor; Krindges, André ; Lotufo, Anna Diva Plasencia ; Minussi, Carlos Roberto (Sensors, 2022) [Artigo]
Mato Grosso, Brazil, is the largest soy producer in the country. Asian Soy Rust is a disease that has already caused a lot of damage to Brazilian agribusiness. The plant matures prematurely, hindering the filling of the ... -
Comments on ‘Less conservative conditions for robust LQR-state-derivative controller design: an LMI approach’ and new sufficient LMI conditions for invertibility of a convex combination of matrices
; Teixeira, Marcelo Carvalho Minhoto; ; Assunção, Edvaldo ; Beteto, Marco Antonio Leite (International Journal of Systems Science, 2022) [Artigo]
This note is concerned with conditions on a set of non-singular matrices (Formula presented.), (Formula presented.), so that any convex combination of these matrices is also non-singular. The first part of the note points ...