New Compact White-Box Transformer Model for the Calculation of Electromagnetic Transients

In a recent work, a successful power transformer white-box model for the calculation of electromagnetic transients has been presented. Although this model gives very satisfactory results, when applied to large transformers it requires a large number of auxiliary loops to model the damping. This can...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on power delivery 2022-08, Vol.37 (4), p.2921-2931
Main Author: Mombello, Enrique E.
Format: Article
Language:English
Subjects:
Circuits
Damping
damping modeling
Impedance
Inductance
Inductive coupling
Integrated circuit modeling
Mathematical models
model reduction
power system transients
Power transformers
Transformers
white-box models
Windings
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In a recent work, a successful power transformer white-box model for the calculation of electromagnetic transients has been presented. Although this model gives very satisfactory results, when applied to large transformers it requires a large number of auxiliary loops to model the damping. This can be problematic as it not only requires more computational effort, but the size of the input data may even preclude its use with ATP-EMTP and perhaps with other EMTP-based software that have limitations in this regard. In this work a new reduced model which enables its use with ATP-EMTP is presented. This model requires a much smaller number of circuit components than the original model, which allows the data size and simulation time to be substantially reduced without practically affecting the calculation results. This has been achieved through the reduction of the rank of the sub-matrices that characterize the inductive coupling between the main winding sections and the auxiliary loops used to model the damping. The new model has been validated by making comparisons of the frequency responses calculated using the new compact model with the ones calculated with the original model developed for the case study used by the CIGRE JWG A2/C4.52 to test the accuracy of various types of transformer models.
ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2021.3119272