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Grant number: 17/17228-5
Support Opportunities:Scholarships in Brazil - Post-Doctorate
Effective date (Start): February 01, 2018
Effective date (End): March 17, 2019
Field of knowledge:Engineering - Electrical Engineering - Power Systems
Principal Investigator:Maria Cristina Dias Tavares
Grantee:Ozenir Farah da Rocha Dias
Host Institution: Faculdade de Engenharia Elétrica e de Computação (FEEC). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil


The aim of this research project is the development of a fast adaptive single-phase reclosing algorithm for half wavelength transmission lines (HWL) in order to block the reclosing maneuver and, consequently, generate the three-phase opening in cases of permanent faults. For transient fault, the algorithm will detect the fault elimination and perform the single-phase reclosing of the open phase successfully. The main project objective is to elaborate an algorithm using the real-time digital simulator (RTDS) and implement the algorithm in a commercial hardware, producing a prototype relay.The project consists of two steps: the first step will be the evaluation of algorithms available in literature, that have been developed for conventional lines, and the second step is the development of a new algorithm for HWL.In the first step, especifically two algorithms available in the literature will be evaluated and implemented in the RTDS. These algorithms were developed for conventional lines and will be tested for HWL. The aim of this first step is to verify if the already elaborated algorithms can be applied to HWL.In the second step, an algorithm will be developed specifically for HWL. The electrical quantities will be evaluated during the single-phase reclosing and producing an algorithm that will block the reclosing maneuver and, consequently, generate the three-phase opening in cases of permanent faults. This will prevent an unsuccesful reclosing. Besides, the algorithm will detect the arc extinction for transient fault, adjusting the dead time and assuring the minimal optimum reclosing time. If the dead-time exceeds a threshold the automatic reclosing is canceled and three-phase tripping is implemented, assuring system stability. At the conclusion of this research project it is expected to generate a fast adaptive single-phase reclosing algorithm for HWL and have it implemented in a hardware, or better, have a prototype relay.

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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)
DIAS, OZENIR; TAVARES, MARIA CRISTINA; MAGRIN, FABIANO. Hardware implementation and performance evaluation of the fast adaptive single-phase auto reclosing algorithm. Electric Power Systems Research, v. 168, p. 169-183, . (17/17228-5, 17/20010-1)

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