Nova metodologia para a estimação da seção em falta em sistemas elétricos de potência com foco nos alarmes dos relés de distância e busca de seções isoladas

• Ano de defesa: 2014
• Autor(a) principal: Menco, Carlos Andres Lazaro
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Santa Maria; BR; Engenharia Elétrica; UFSM; Programa de Pós-Graduação em Engenharia Elétrica
• Palavras-chave em Português: Proteção de sistemas de potência; Topologia da rede; Estimação da seção de falta; Algoritmo de busca dijkstra; Tratamento dos alarmes do SCADA; Power system protections; Network topology; Fault section estimation; Dijkstra search algorithm; SCADA alarm treatment; CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA
• Link de acesso: http://repositorio.ufsm.br/handle/1/8548

This works proposes a novel methodology for Fault Section Estimation in Power Systems. This document describes a computational tool to assist operators of electrical system in decision-making, thus ensuring the reliability of the energy supply and the reduction of reestablishment time after of fault occurrence. The proposed methodology is based on the interpretation of alarms provided by the Supervisory and Data Acquisition System (SCADA) and the electrical characteristics of the system, as well as impedance of transmission lines and transformers, circuit breakers states and settings of distance protective relays. The methodology is deterministic and uses the interception between zones of distance protective relays as base for the section estimation and the circuit breaker states to associate physically isolated sections in the system after of fault occurrence, making use of a shortest path search algorithm. Possible fault scenarios were simulated on the IEEE-30 Bus System in order to validate the methodology. The results show that the approach can provide satisfactory solutions, even in cases of multiple faults or failure of protections devices.