Banca de QUALIFICAÇÃO: DANYENE GUIMARAES ALVARENGA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : DANYENE GUIMARAES ALVARENGA
DATE: 07/12/2020
TIME: 14:00
LOCAL: https://conferenciaweb.rnp.br/webconf/marco-aurelio-de-oliveira-schroeder
TITLE:

SENSITIVITY ANALYSIS OF ELECTROMAGNETIC WAVE PROPAGATION PARAMETERS IN UNDERGROUND CABLES

KEY WORDS:

underground transmission line, electromagnetic parameters, ground return impedance, sensitivity analysis, and electromagnetic modeling

PAGES: 101
BIG AREA: Engenharias
AREA: Engenharia Elétrica
SUBÁREA: Sistemas Elétricos de Potência
SPECIALTY: Máquinas Elétricas e Dispositivos de Potência
SUMMARY:

The use of underground transmission line has grown all over the world. In this sense, the calculation of the electromagnetic parameters of underground cables is extremely important for various types of simulations in energy systems. In this work, a formulation is used to calculate the longitudinal and transversal parameters of an underground electrical system, as well as a formulation of ground return impedance to model the underground cable system. Thus, the behaviors of the attenuation and speed parameters of the system's earth mode of propagation are analyzed face of the influence of several factors, considering frequencies from 10 Hz up to 100 kHz. For the frequency range considered, the effect of displacement currents is neglected in the formulations, since it has no influence on the results. Several sensitivity analyzes are performed, considering: different soil resistivities, different thicknesses and permissivities of the last cable insulation layer and different spacing between the system cables. The results illustrate the physical consistency of the electromagnetic modeling of the parameters considered and the importance of studying soil effects and other factors in the performance of an underground transmission system.

BANKING MEMBERS:
Presidente - 1418371 - MARCO AURELIO DE OLIVEIRA SCHROEDER
Interno - 1032696 - RODOLFO ANTONIO RIBEIRO DE MOURA
Externa à Instituição - URSULA DO CARMO RESENDE - CEFET/MG
Externo à Instituição - JOAO AMIM MOOR NETO - CEFET/RJ