Voltage stability analysis in electric power systems considering the dynamics of network parameters.

Author(s)

Felipe Proença de Albuquerque

• Document type: Doctoral Thesis
• Press: São Paulo.
• Institution: Universidade de São Paulo (USP). Escola Politécnica (EP/BC)
• Defense date: 2024-09-13

Examining board members

Eduardo Coelho Marques da Costa; John Fredy Franco Baquero; Bruno Albuquerque de Castro; Rogério Andrade Flauzino

• Advisor: Eduardo Coelho Marques da Costa

Abstract

Voltage stability is crucial for the reliable and secure operation of power systems. In recent years, the importance of this study area has increased as power systems operate increasingly closer to the collapse point. Additionally, enhanced system monitoring has enabled new approaches to the problem. Technical literature shows that voltage stability is influenced by variations in the quantities that compose the power system, whether they are parameters present in the admittance matrix or measurements derived from system monitoring, such as those performed by phasor measurement units. However, conventional stability study approaches neglect the influence of parameter inaccuracies and the necessity for rigorous noise modeling in phasor measurements. In this context, based on an extensive literature review, this work presents an alternative for estimating the active power load margin based on statistical learning, which takes into account the influence of these quantity variations and rigorous modeling for data obtained in power systems. (AU)

• FAPESP's process: 21/01325-7 - Analysis of the voltage stability of electric power systems considering the dynamic parameters of the grid
• Grantee: Felipe Proença de Albuquerque
• Support Opportunities: Scholarships in Brazil - Doctorate