Título:
Measurements for validation of manufacturer’s white-box transformer models
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Autor:
Gustavsen, Bjørn
Portillo, Alvaro
Ronchi, Rodrigo
Mjelve, Asgeir
Portillo, Alvaro
Ronchi, Rodrigo
Mjelve, Asgeir
Tutor:
Tipo de documento:
Ponencia
Editor:
Palabras clave:
Transformer
White-box
Black-box
Grey-box
Measurement
Overvoltages
Electromagnetic transients
White-box
Black-box
Grey-box
Measurement
Overvoltages
Electromagnetic transients
Descriptores:
Potencia
Año de publicación:
2017
Contenido:
Resumen:
The transformer manufacturers make use of electromagnetic transient calculations by detailed white-box models to ensure that the transformer will withstand the lightning impulse test during the factory acceptance test. In principle, such models could be used in general electromagnetic transient simulation of overvoltages in the system. One of the objectives of CIGRE JWG A2/C4.52 is to assess the accuracy of the manufacturer’s white-box models in the context of general transient overvoltages that can occur in the system. As part of this activity, extensive measurements have been performed on two three-winding transformers: one three-phase unit and one single-phase unit. The measurements involved voltage transfer between external terminals and from external terminals to three points in the regulating winding. The measurements were performed with alternative points of voltage excitation, grounding conditions and alternative tap settings, giving 64 cases for each transformer. Some admittance measurements were also performed. This paper gives an overview of the measurements that were performed, the measurement procedure, and some initial results. The voltage transfer measurements were mostly performed in the frequency domain and transferred to the time domain via rational function approximation and recursive convolutions. That way, voltage transfer functions have been generated for well-defined excitations, e.g. the standard 1.2/50 µs voltage wave. In addition, initial results for black-box modeling of the three-phase unit is shown. The measurements are currently being used within CIGRE JWG A2/C4.52 for benchmarking of white-box models
Descripción:
4th International Colloquium "Transformer Research and Asset Management”
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Editorial:
Elsevier
EN:
Procedia Engineering, v. 202, 2017, pp. 240-250
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Citación:
Gustavsen, B, Portillo, A, Ronchi, R, Mjelve, A. "Measurements for validation of manufacturer’s white-box transformer models" Procedia Engineering, v. 202, 2017, pp. 240-250. Special issue of the 4th International Colloquium "Transformer Research and Asset Management" doi: https://doi.org/10.1016/j.proeng.2017.09.711
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ISSN:
1877-7058
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Licencia:
Licencia Creative Commons Atribución – No Comercial (CC – By-NC)
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| Ficheros | Descripción | Tamaño | Formato | ||
|---|---|---|---|---|---|
| GPRM17.pdf | — | 1.74 MB | Adobe PDF |