Banca de DEFESA: FELIPE DIÓGENES DE MENDONCA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : FELIPE DIÓGENES DE MENDONCA
DATE: 15/09/2023
TIME: 14:00
LOCAL: Sessão presencial: DEE/LDSP (4º andar do prédio administrativo do CTG)
TITLE:

AUTOMATION OF GRADUATION AND COORDINATION PROCESSES FOR OVERCURRENT PROTECTION FUNCTIONS.

KEY WORDS:

Coordination; ANAFAS; optimization; protection of electrical systems; overcurrent relays; short circuit; data processing.

PAGES: 96
BIG AREA: Engenharias
AREA: Engenharia Elétrica
SUMMARY:

Realizing a study on the graduation and selectivity of an electrical system's protection, ensuring its coordination, is an essential task to ensure continuous load service and mitigate potential harm to equipment and individuals. However, this study demands a significant time from engineering firms, particularly during the data acquisition phase required for the graduation process and the subsequent coordination phase.

The coordination procedure entails a meticulous analysis of pertinent relay pairs, categorizing them as either primary safeguards or secondary measures for each fault scenario. At this juncture, and to the determination of protection relay settings, it becomes imperative for the engineer to be equipped with current data inherent to the scrutinized system, accounting for various fault types and diverse contingencies. To accomplish the acquisition of these short-circuit current values for a specific system, encompassing contributions from adjoining equipment, a Python program has been devised to interface with ANAFAS, software widely employed within the Brazilian electrical system. This program, in conjunction with a innovative computational tool for automated protection coordination of overcurrent relays, regardless of their directional settings, developed in VBA, significantly streamlines the time required for conducting a graduation study.

The automatic coordination program, which stands out positively compared to other existing methods, employs optimization techniques and minimizes the operating time of relays closest to the fault while maintaining selectivity and sensitivity criteria. After the code execution, the data is presented through reports, providing information on the operating times for the presented short circuits, as well as the coordination charts of the protections.

COMMITTEE MEMBERS:
Externo ao Programa - 1061963 - JEYDSON LOPES DA SILVA - nullExterno à Instituição - MANOEL AFONSO DE CARVALHO JUNIOR - UFPE
Presidente - 1543575 - PEDRO ANDRE CARVALHO ROSAS
Externo à Instituição - ROBERTO FELICIANO DIAS FILHO - UPE