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Calculation of internal overvoltages using a wide band transformer model based on limited information about transformer design (CROSBI ID 243778)

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Jurišić, Bruno ; Poujade, Paul ; Xemard, Alain ; Paladian, Françoise Calculation of internal overvoltages using a wide band transformer model based on limited information about transformer design // Procedia engineering, 202 (2017), 288-296. doi: 10.1016/j.proeng.2017.09.716

Podaci o odgovornosti

Jurišić, Bruno ; Poujade, Paul ; Xemard, Alain ; Paladian, Françoise

engleski

Calculation of internal overvoltages using a wide band transformer model based on limited information about transformer design

Specific insulation coordination studies might require an accurate modeling of power transformers. This is the case for instance when transfers of fast front overvoltages from the high voltage side to the low voltage side of a transformer are involved. Modeling accurately the transformer’s electromagnetic behavior for the frequency range of fast front overvoltages requires special care. There are numerous existing transformer models which are intended to model the wide band transformer’s behavior. However, many of them are too complex or require confidential information about the transformer design. This makes them not suitable for power engineering applications. In this paper a wide band transformer model based on limited information about the transformer design and compatible with an electromagnetic transients program is presented. Then, its application on calculating internal overvoltages distribution along transformer windings, taking into account different conditions on the outer transformer terminals, is shown for lightning impulse.

Transformer modelling ; Grey Box ; Complex permeability ; ElectroMagnetic Transients Programme ; Internal overvoltages

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Podaci o izdanju

202

2017.

288-296

objavljeno

1877-7058

10.1016/j.proeng.2017.09.716

Povezanost rada

Elektrotehnika

Poveznice