Banca de DEFESA: CECILIO MARTINS DE SOUSA NETO

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE : CECILIO MARTINS DE SOUSA NETO
DATA : 09/12/2016
HORA: 14:00
LOCAL: Auditório do ECT
TÍTULO:

Power System Stabilizer Based on Wavelet Transform for Generation Systems. 

PALAVRAS-CHAVES:

Power System Stabilizer, Automatic Voltage Regulator, Salient Pole Synchronous
Generator, Wavelet Transform, Sliding Mode Control.

PÁGINAS: 150
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Elétrica
SUBÁREA: Sistemas Elétricos de Potência
ESPECIALIDADE: Medição, Controle, Correção e Proteção de Sistemas Elétricos de Potência
RESUMO:

The power system stabilizers are used to suppress low-frequency electromechanical oscillations and improve the synchronous generator stability limits, while automatic voltage regulators control the terminal voltage of the synchronous generators.
This thesis proposes a new methodology to design of an automatic voltage regulator and power system stabilizer for salient pole synchronous generator. The power system stabilizer employs a wavelet transform for extraction of the electromechanical oscillations in electrical power systems based on the scaling coefficient energy. The detection of the electrical oscillations effectuated by the wavelet coefficient energy and a control scheme generates the signal trigger to the power system stabilizer. A hybrid strategy composed of the integration of the sliding mode control system and the standard control implements the automatic voltage regulator. The effectiveness of the proposed power system stabilizer was evaluated experimentally through of a comparative study of a conventional power stabilizer system. On the other hand, the performance of the automatic voltage regulator was assessed and compared with a linear controller and two other hybrid control strategies. Furthermore, the performance of the wavelet transform was evaluated experimentally to detect electrical and electromechanical oscillations, in which the boundary wavelet transform presents the better performance.

MEMBROS DA BANCA:
Presidente - 1196444 - RICARDO LUCIO DE ARAUJO RIBEIRO
Interno - 1807863 - FLAVIO BEZERRA COSTA
Interno - 1543191 - LUIZ FELIPE DE QUEIROZ SILVEIRA
Externo ao Programa - 1569480 - JOSSANA MARIA DE SOUZA FERREIRA
Externo à Instituição - ANTONIO MARCUS NOGUEIRA LIMA - UFCG
Externo à Instituição - FRANCISCO DE ASSIS DOS SANTOS NEVES - UFPE