Banca de DEFESA: DIEGO SOARES LOPES

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : DIEGO SOARES LOPES
DATE: 26/07/2021
TIME: 09:00
LOCAL: Videoconferência (Google Meet) : meet.google.com/zey-xdjv-qph
TITLE:

MODELING FOR DYNAMIC MEASURING THE DISTRIBUTION OF POTENTIAL ACROSS POLYMERIC INSULATOR CHAINS. 

KEY WORDS:

insulators, modeling, voltage distribution, electric field distribution, pollution.

PAGES: 202
BIG AREA: Engenharias
AREA: Engenharia Elétrica
SUMMARY:

This research provides the basis for the development of a new monitoring technique, applied to non-ceramic insulators, through analysis of the voltage distribution behaviours along the insulator surface. A model is created aiming to define which two points, on the insulator surface, effectively represents the behaviour of electric potential and, therefore, should be monitored, hence, leading to the analysis of the voltage difference on such points. The developed model can be utilized for any non-ceramic insulator since the voltage applied and leakage distance are known. Successive simulations were made to test the model, as well as the chosen points. Such simulations were carried out using the finite element method, where a three-dimension insulator was modelled in the presence of a narrow conductive path on its surface and non-uniform conductivity. The considered conductivities have a direct correspondence with pollution levels found in the environment, as well as they are related to an equivalent salt deposit density. Then, experiments were carried out that corroborate the results obtained through the simulations, indicating that the model behaves as expected. The results are promising, considering that the method has a high success rate for the majority of case scenarios. 

BANKING MEMBERS:
Externo à Instituição - IVAN JOSÉ DA SILVA LOPES - UFMG
Externo à Instituição - EDSON GUEDES DA COSTA - UFCG
Presidente - 1220712 - JOSE MAURICIO DE BARROS BEZERRA
Interno - 1171041 - RONALDO RIBEIRO BARBOSA DE AQUINO
Externo à Instituição - TARSO VILELA FERREIRA - UFS