Identificação de Erros Grosseiros de Medidas utilizando Multiplicadores de Lagrange

Ana F.P. da Costa; Edimar J. de Oliveira; Leonardo W. de Oliveira; Julio C. Stacchini de Souza

doi:10.20906/CBA2022/3510

Ana F.P. da Costa Faculdade de Engenharia Elétrica, Universidade Federal de Juiz de Fora, MG
Edimar J. de Oliveira Faculdade de Engenharia Elétrica, Universidade Federal de Juiz de Fora, MG
Leonardo W. de Oliveira Faculdade de Engenharia Elétrica, Universidade Federal de Juiz de Fora, MG
Julio C. Stacchini de Souza Departamento de Engenharia Elétrica, Universidade Federal Fluminense, RJ

DOI: https://doi.org/10.20906/CBA2022/3510

Keywords: State Estimation, Gross Errors, Lagrange Multipliers, Extended Optimal Power Flow

Abstract

This paper aims to identify the occurrence of gross errors (EG) in the measurement system of an electrical distribution power system (SDEE). The proposed methodology uses the Extended Optimal Power Flow (E-OPF) to estimate the state of the system and the Lagrange Multipliers (ML) related with the lower and upper limit of measured variable.The ML value increases when the limits of the variables are active and with it the error indexes are calculated to process gross errors in the SDEE. A case study with the modified Taiwan Power Company (TPC) 84-Buses Distribution System is used to show the main points of the proposed methodology.