Contribution to two-time scale transient stability assessment of power systems by direct methods

Author(s)

Edson Aparecido Rozas Theodoro

• Document type: Doctoral Thesis
• Press: São Carlos.
• Institution: Universidade de São Paulo (USP). Escola de Engenharia de São Carlos (EESC/SBD)
• Defense date: 2013-03-25

Examining board members

Luís Fernando Costa Alberto; Newton Geraldo Bretas; André Christóvão Pio Martins; Aguinaldo Silveira e Silva; Luiz Carlos Pereira da Silva

• Advisor: Luís Fernando Costa Alberto; Rodrigo Andrade Ramos

Abstract

The main objective of this work is to investigate the existence of several time-scales in the mathematical models of electric power systems, in particular the existence of two-time scales: slow and fast, and exploit these features in the direct transient stability assessment. In particular, the Controlling Unstable Equilibrium Point (CUEP) method is studied for two-time scale models of power systems and applied to transient stability analysis. In order to accomplish this aim, a sound theoretical basis for two-time scale transient stability analysis of electric power system models will be provided, as well as energy functions and new numerical algorithms for proper two-time scale CUEP calculations, with the purpose of investigating improvements and possible limitations of this method when compared with the traditional CUEP method. Exploiting the two-time scale features of power system models, it is intended to obtain new robust numerical algorithms for transient stability analysis, as well as to diminish the conservativeness of the results. (AU)

• FAPESP's process: 09/16083-7 - Contribution to Two-Time Scale Transient Stability Assessment of Power Systems by Direct Methods
• Grantee: Edson Aparecido Rozas Theodoro
• Support Opportunities: Scholarships in Brazil - Doctorate