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Power system analysis and control

Grant number: 04/04672-4
Support type:Research Projects - Thematic Grants
Duration: April 01, 2006 - March 31, 2010
Field of knowledge:Engineering - Electrical Engineering - Power Systems
Principal Investigator:Newton Geraldo Bretas
Grantee:Newton Geraldo Bretas
Home Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Co-Principal Investigators:Joao Bosco Augusto London Junior ; Luís Fernando Costa Alberto ; Rodrigo Andrade Ramos
Associated scholarship(s):10/05098-0 - Three-phase state estimation in electric power systems, BP.IC
09/06312-9 - Development of a computational method for the numerical solution of sparse linear systems using an object-oriented approach, BP.IC
09/05167-5 - A fast method for analysis of contingency and selection in the context of preventive control of voltage stability, BP.DR
+ associated scholarships 08/03876-6 - Assessment of the impact of damping controllers in the power quality of distribution systems with the insertion of cogeneration, BP.DR
07/06076-8 - Prediction of voltage stability margin due to Hopf bifurcation, BP.MS
08/05190-4 - Efficiency analysis of power flow methods, BP.IC
07/05997-2 - Design of a computational tool for dynamic security analysis, in the context of transient stability, of electrical power systems based on direct methods, BP.MS
07/06585-0 - Asymptotic behavior investigation of a class of non-linear switched systems, BP.IC - associated scholarships


The large growth of electrical energy demand in the last decades and the great number of new interconnections between neighbor systems have made the operation and control of power systems a challenging task for engineers. More precise and refined techniques of analysis have been required to safely operate power systems. The main aim of this research project is to develop new and more refined methods for analysis and control of power system in order to improve the reliability of the system operation. Power system analysis can be divided into several topics. From the technical point of view, this project intends to deal with some of these topics in which the group has already established reasonable competence. Basically, there are two topics that will be studied: static analysis and dynamical analysis. In the context of static analysis, the following subtopics will be covered: state and parameter estimation; algebraic analysis in the gross error identification; network observability and reliability of measurement sets. In the context of dynamical analysis, the following subtopics will be investigated: transient stability using energetic methods; generator parameter estimation; nonlinear control of generator, design of robust PSS's; voltage collapse. It is expected that effectively participating in these researches, directly or indirectly, the enrolled students will become aware of several aspects of analysis and control of power systems. Also it is hoped that many methodologies and tools of analysis will be developed, contributing in this way for the science and engineering progress. (AU)

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
SALIM, R. H.; KUIAVA, R.; RAMOS, R. A.; BRETAS, N. G. Impact of power factor regulation on small-signal stability of power distribution systems with distributed synchronous generators. EUROPEAN TRANSACTIONS ON ELECTRICAL POWER, v. 21, n. 7, p. 1923-1940, OCT 2011. Web of Science Citations: 14.
DE OLIVEIRA, RICARDO V.; RAMOS, RODRIGO A.; BRETAS, NEWTON G. An algorithm for computerized automatic tuning of power system stabilizers. CONTROL ENGINEERING PRACTICE, v. 18, n. 1, p. 45-54, JAN 2010. Web of Science Citations: 13.
DE OLIVEIRA, R. V.; KUIAVA, R.; RAMOS, R. A.; BRETAS, N. G. Automatic tuning method for the design of supplementary damping controllers for flexible alternating current transmission system devices. IET GENERATION TRANSMISSION & DISTRIBUTION, v. 3, n. 10, p. 919-929, OCT 2009. Web of Science Citations: 14.

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