Influência da inserção do dispositivo STATCOM na proteção contra perda de excitação de geradores: Uma contribuição utilizando a lógica fuzzy

Victor M. P. Dutra; Aurélio L. M. Coelho; Francisco R. A. C. Baracho; Ivan P. Faria; Elcio F. Arruda

doi:10.20906/sbse.v2i1.3064

Victor M. P. Dutra Instituto de Ciências Tecnológicas, Universidade Federal de Itajubá – Campus de Itabira, Itabira
Aurélio L. M. Coelho Instituto de Ciências Tecnológicas, Universidade Federal de Itajubá – Campus de Itabira, Itabira
Francisco R. A. C. Baracho Instituto de Ciências Exatas e Aplicadas, Universidade Federal de Ouro Preto – Campus de João Monlevade João Monlevade
Ivan P. Faria Instituto de Ciências Tecnológicas, Universidade Federal de Itajubá – Campus de Itabira, Itabira
Elcio F. Arruda Instituto de Ciências Tecnológicas, Universidade Federal de Itajubá – Campus de Itabira, Itabira

DOI: https://doi.org/10.20906/sbse.v2i1.3064

Keywords: FACTS, Fuzzy Logic, Loss of Excitation, STATCOM, Synchronous Generator

Abstract

Brazil is a country with continental dimensions and has a power generation system interconnected with all regions, through transmission lines (TLs), allowing supply for its all-consumption centers. However, building new TLs may be unfeasible in an environmental and financial sense. With the advancement of power electronics, FACTS (Flexible Alternating Current Transmission Systems) devices were created, which are based on series or parallel reactive compensation in the network, allowing flexibility in system operation, with lower transmission losses and better stability. However, the insertion of such devices may cause the maloperation of synchronous generators protection. In this sense, this work presents the effects of inserting one FACTS model (STATCOM - Static Synchronous Compensator), in relation to the protection system against the loss of excitation of synchronous generators. To identify and improve the protection response against loss of excitation, it is proposed to use a fuzzy classifier, which has its effectiveness compared to the traditional scheme that uses the impedance characteristic.