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Fast Method for Dynamic Security Analysis of Power System Considering Small-Signal and Voltage Stability

Grant number: 15/24245-8
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): June 01, 2016
Effective date (End): February 29, 2020
Field of knowledge:Engineering - Electrical Engineering - Power Systems
Principal researcher:Rodrigo Andrade Ramos
Grantee:Murilo Eduardo Casteroba Bento
Home Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil


In studies of Stability to the Dynamic Safety Analysis of Electric Power Systems (EPS), the Voltage Stability Margin (VSM) is measured as the difference between the point of maximum load (nose PV curve and set to Saddle-Node Bifurcation (SNB)) and the current load. However, this margin may not accurately reflectthe true limits of system load when it does not consider oscillatory instability due to Hopf Bifurcation (HB) (Loss of the Small-Signal Stability). This occurs when these studies are done in simplified static models that do not exhibit this type of instability mechanism. Therefore, studies considering only the simplified static modeling in the voltage stability (VS) analysis, despite being suitable for a portion of problems that may exist in an EPS, are not applicable to other significant portion of this set of phenomena. Therefore, inview of this argument, this PhD project proposes innovations in studies related to voltage stability in EPS, from two aspects. To this end one of the goals of this project is jointly to evaluate Voltage and Small-SignalSafety Margins of an EPS, from the development of a unified procedure. In other words, the proposal is to develop a method that can calculate a single margin of safety already contemplating SNB and HB. In addition,information of electrical quantities provided by Phasor Measurement Units will monitor the EPS and provide indicative of precision in the current estimate of the safety margin. To develop and to evaluate these margins of accuracy rates are also project objectives. This information will indicate the need to recalculate this margin to a new operating scenario. As a result of the PhD project, it is expected the development of fast and efficient tools of EPSs analysis.

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Scientific publications (7)
(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)
BENTO, MURILO E. C.; RAMOS, RODRIGO A. An approach for monitoring and updating the load margin of power systems in dynamic security assessment. Electric Power Systems Research, v. 198, SEP 2021. Web of Science Citations: 0.
BENTO, MURILO E. C.; RAMOS, RODRIGO A. A Method Based on Linear Matrix Inequalities to Design a Wide-Area Damping Controller Resilient to Permanent Communication Failures. IEEE SYSTEMS JOURNAL, v. 15, n. 3, p. 3832-3840, SEP 2021. Web of Science Citations: 4.
BENTO, MURILO E. C. Monitoring of the power system load margin based on a machine learning technique. ELECTRICAL ENGINEERING, APR 2021. Web of Science Citations: 0.
BENTO, MURILO E. C.; DOTTA, DANIEL; KUIAVA, ROMAN; RAMOS, RODRIGO A. Robust design of coordinated decentralized damping controllers for power systems. INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, v. 99, n. 5-8, p. 2035-2044, NOV 2018. Web of Science Citations: 2.
CASTEROBA BENTO, MURILO EDUARDO; KUIAVA, ROMAN; RAMOS, RODRIGO ANDRADE. Design of Wide-Area Damping Controllers Incorporating Resiliency to Permanent Failure of Remote Communication Links. JOURNAL OF CONTROL AUTOMATION AND ELECTRICAL SYSTEMS, v. 29, n. 5, p. 541-550, OCT 2018. Web of Science Citations: 3.
BENTO, MURILO E. C.; DOTTA, DANIEL; KUIAVA, ROMAN; RAMOS, RODRIGO A. Design of Coordinated Decentralized Damping Controllers for Power Systems Considering Uncertainties. JOURNAL OF CONTROL AUTOMATION AND ELECTRICAL SYSTEMS, v. 29, n. 1, p. 22-31, FEB 2018. Web of Science Citations: 6.
BENTO, MURILO E. C.; DOTTA, DANIEL; KUIAVA, ROMAN; RAMOS, RODRIGO A. A Procedure to Design Fault-Tolerant Wide-Area Damping Controllers. IEEE ACCESS, v. 6, p. 23383-23405, 2018. Web of Science Citations: 10.

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