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Stability Metric Based on Sensitivity Analysis Applied to Electrical Repowering System

João R. B. Paiva, Alana S. Magalhães, Pedro H. F. Moraes, Júnio S. Bulhões and Wesley P. Calixto
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João R. B. Paiva: Studies and Researches in Science and Technology Group (GCITE), Federal Institute of Goias (IFG), Goiania 74130-012, GO, Brazil
Alana S. Magalhães: Studies and Researches in Science and Technology Group (GCITE), Federal Institute of Goias (IFG), Goiania 74130-012, GO, Brazil
Pedro H. F. Moraes: Department of Electrical Engineering (DEE), University of Brasilia (UnB), Brasilia 70910-900, DF, Brazil
Júnio S. Bulhões: Studies and Researches in Science and Technology Group (GCITE), Federal Institute of Goias (IFG), Goiania 74130-012, GO, Brazil
Wesley P. Calixto: Studies and Researches in Science and Technology Group (GCITE), Federal Institute of Goias (IFG), Goiania 74130-012, GO, Brazil

Energies, 2021, vol. 14, issue 22, 1-21

Abstract: Stability metrics are used to quantify a system’s ability to maintain equilibrium under disturbances. We did not identify the proposition of a stability metric using sensitivity analysis within the literature. This work proposes a system stability metric and its application to an electrical repowering system. The methodology for applying the proposed metric comprises: (i) system parameters sensitivity analysis and spider diagram construction, (ii) determining the array containing the line segments inclination angles of each spider diagram curve, and (iii) stability calculation using the array mean and maximum inclination value of a line segment. After simulating the model built for the electrical repowering system and applying the methodology, we obtain results regarding the sensitivity indices and stability values of system inputs relative to their outputs, considering the original system and with reduced parameters. Using the stability study, it was possible to determine different stability categories for the system parameters, which indicates the need for different analysis levels.

Keywords: stability metric; electric repowering; sensitivity analysis; parameter suppression (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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