Investigative study of modal analysis applied to distribution systems within the scope of harmonic distortions

Author(s)

Carolina Iovance Golfieri

• Document type: Master's Dissertation
• Press: São Carlos.
• Institution: Universidade de São Paulo (USP). Escola de Engenharia de São Carlos (EESC/SBD)
• Defense date: 2018-09-25

Examining board members

Mário Oleskovicz; Carlos Frederico Meschini Almeida; Fernando Nunes Belchior

• Advisor: Mário Oleskovicz

Abstract

This research presents an investigative study of the modal analysis applied to Distribution Systems (DSs) in the context of Power Quality (PQ) considering the harmonic distortions. From the modal resonance analysis, an investigative study was conducted to indicate which bus bars are more sensitive and allow better observation in face of harmonic distortions. It is worth mentioning that the method of modal resonance analysis, which is based on the spectral decomposition of the admittance matrix of the electric system, already presents interesting applications focused on transmission systems. The challenge of this research was to investigate its application to DSs focusing on harmonic distortions, as well as their monitoring. Among the observed results of the research development, a better understanding of the harmonic distortions problem was achieved, which made it possible to highlight the sensitivity and observability of the DSs tests against the problem defined in the context of the PQ. (AU)

• FAPESP's process: 17/09682-8 - Investigative Study of Modal Analysis applied to Distribution Systems within the scope of Harmonic Distortions
• Grantee: Carolina Iovance Golfieri
• Support Opportunities: Scholarships in Brazil - Master