Evaluation of Matrix Pencil Algorithms Applied in Electric Power Systems
Renato Sellaro Dorighello1; Gustavo Henrique da Costa Oliveira1
1 Universidade Federal do Paraná
Baixar PDF doi:10.20906/CPS/CBA2018-0457
Resumo
Electric power systems sometimes experience transient situations in which their steady state behavior is no longer respected. In these scenarios, the electric power supply can be compromised as well as economic losses may occur. In order to better predict such accidents, system identi cation uses several methods to de ne signal parameters. One method is the de nition of frequency-dependent network equivalent (FDNE) models to analyse eletromacnetic transitories. Another method is the de nition of transient signals' eletromechanic modes based on Wide Area Monitoring (WAM) systems. An important technic of parameter identi cation is the Matrix Pencil method, which can be applied in both problems described. In this work, it is proposed to study and evaluate the performance of the Matrix Pencil algorithm in the WAM problem and in the estimation of eletromechanic modes. It is also purposed to compare it with the Vector Fitting method, which has been used in similar applications. Three study cases are presented in order to evaluate and compare the problem described: One synthetic test signal and two real cases considering ringdown data extracted from the North American Eastern Interconnection system and from the Brazilian Interconnected Power system.
Palavras-chave: Power Systems Stability; Eletromechanical Modes; Ringdown Analysis; System Identification; Matrix Pencil