Banca de DEFESA: MAX RODRIGUES MARQUES

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : MAX RODRIGUES MARQUES
DATA : 28/01/2019
HORA: 09:00
LOCAL: ECT - Sala 4
TÍTULO:

Evaluation of Wavelet-based Protection Applied in a Doubly-fed Induction Generator

PALAVRAS-CHAVES:

Doubly-fed Induction Machine, Generator protections, Wavelet Transform, Fault Identification

PÁGINAS: 100
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Elétrica
SUBÁREA: Sistemas Elétricos de Potência
ESPECIALIDADE: Medição, Controle, Correção e Proteção de Sistemas Elétricos de Potência
RESUMO:

With the globalization and the rapidly increasing global energy demand, it has been seeking the sustainability guarantee because the growing concern to preserve the planet for future generations. Therefore, investments in clean and renewable energy sources, such as wind power generation, have gained space in research groups in order to overcome their drawbacks and improve the benefits. The doubly fed induction generator (DFIG) is the predominant one in the market. Nevertheless, considering the electrical failures inherent to this generator type and the ones in the power system (PS), the protection of its elements is an important topic that still does not have comprehensive studies. This dissertation investigates the techniques used to perform the internal and external protections applied to the DFIG topology. As well as, it is presented the theoretical fundamentals about the wind energy conversion systems (WECS), the wavelet transform, and some relay-based protections. DFIG electrical signals in case of machine terminal faults is analyzed and evaluated using the real-time stationary wavelet transform with boundary effect (RT-BSWT). Furthermore, qualitative studies on wavelet overcurrent, wavelet under-voltage, directional, and differential protections will be introduced in order to assess and to validate these new protection trends applied to WECS.As also, to develop a preliminary method of identifying internal faults in a DFIG. Analysis applying these protections to real signals, collected by an experimental test-bench with DFIG, demonstrated which the used mathematical tools had good performances for protection against electrical faults at the common connection point.

MEMBROS DA BANCA:
Presidente - 1807863 - FLAVIO BEZERRA COSTA
Interno - 1597497 - LUCIANO SALES BARROS
Externo ao Programa - 1168362 - THIAGO DE OLIVEIRA ALVES ROCHA
Externo à Instituição - CAMILA MARA VITAL BARROS - UFPB