Novel Exponential Decomposition Applied for Synchronous Machines Parameters Determination

The three-phase sudden short-circuit current analysis is a traditional method for synchronous machine parameters identification described in the main parameter determination standards. Least-squares oriented techniques and conventional exponential decomposition have been applied to analyze the short...

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Bibliographic Details
Published in:	2024 IEEE Power & Energy Society General Meeting (PESGM) pp. 1 - 4
Main Authors:	Bortoni, Edson C., Bemardes, Jose V., Siniscalchi, Roberto T., Oliveira, Alexandra M., Pires, Guilherme C. S., Souza, Heitor I. M.
Format:	Conference Proceeding
Language:	English
Published:	IEEE 21-07-2024
Subjects:	Extrapolation Fitting Generators Interpolation Parameter estimation parameters identification Rotors short-circuit analysis Short-circuit currents Synchronous machines Transient analysis
Online Access:	Get full text
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Summary:	The three-phase sudden short-circuit current analysis is a traditional method for synchronous machine parameters identification described in the main parameter determination standards. Least-squares oriented techniques and conventional exponential decomposition have been applied to analyze the short-circuit curve. However, both approaches have some pitfalls, either due to the influence of steady- and transient- states over the sub-transient state or due to personal influence when defining fitting intervals. A novel exponential decomposition is proposed to avoid such problems and applied to two large synchronous machines. The method is validated by comparing the short-circuit curve obtained by test with the one obtained by theoretical simulation using the retrieved parameters.
ISSN:	1944-9933
DOI:	10.1109/PESGM51994.2024.10688738