Methodology for information extraction from oscillograms and its application for high-impedance faults analysis

Autor(es)

Batista, Oureste Elias ^[1] ; Flauzino, Rogerio Andrade ^[1] ; de Araujo, Marcel Ayres ^[1] ; de Moraes, Lucas Assis ^[1] ; da Silva, Ivan Nunes ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Elect & Comp Engn, BR-13566590 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS; v. 76, p. 23-34, MAR 2016.
• Citações Web of Science: 7

Resumo

Safety and quality of supply represent targets that power distribution companies always strive to meet. Among those occurrences that can have simultaneous deleterious effects on both these targets, High-Impedance Faults (HIFs) stand out since the magnitudes of the effects on the system are too small to activate the relevant system protection devices. In this context, the main aim of this article is to present a new mathematical method for analysis of power systems transient events. This technique was used in the pre-processing of signals to help locate and identify Single Line-to-Ground (SLG) faults. The orthogonal component decomposition technique was tested qualitatively with the help of a real fault oscillogram recorded at a power distribution substation. Computer simulations based on a real distribution feeder model were performed and the numerical results showed that decomposition by Orthogonal Components was able to extract information with more than 80% correlation with the fault occurrence, almost 70% for the location and showed great immunity to the fault resistance effect. (C) 2015 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 11/17610-0 - Monitoramento e controle de sistemas dinâmicos sujeitos a falhas
• Beneficiário: Roberto Kawakami Harrop Galvão
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 12/21816-6 - Sistema inteligente baseado em decomposição por componentes ortogonais e inferência fuzzy para localização de faltas de alta impedância em sistemas de distribuição de energia elétrica com geração distribuída
• Beneficiário: Oureste Elias Batista
• Modalidade de apoio: Bolsas no Brasil - Doutorado