High frequency transformer model derived from limited information about the transformer geometry

Jurišić, Bruno; Uglešić, Ivo; Xémard, Alain; Paladian, Françoise

doi:10.1016/j.ijepes.2017.07.017

Cited by 14 publications

(9 citation statements)

References 25 publications

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“…Following the observations in the previous section, a Grey Box model based on limited information about the transformer geometry has been developed to study high frequency overvoltages existing on outside and inside terminals of the transformer [3], [4], [10].…”

Section: Grey Box Transformer Modelmentioning

confidence: 99%

Calculation of voltage distribution along the transformer winding using the wide band transformer model

Jurišić¹,

Bučar²,

Uglešić³

2022

joe

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Electrical devices in transmission and distribution networks are submitted to fast front transients. These transients are often a cause of a failure in the power system. To simulate these phenomena, it is necessary to detailly model all the components of the power system. This paper concentrates on studding transformer internal failures due to voltage stress that can occur when fast front electromagnetic wave travels through the transformer. To prevent a failure, an internal insulation of the transformer has to be dimensioned to sustain these transient phenomena. Therefore, it is necessary to use advanced wideband transformer models for its dimensioning. In this paper, a wide band transformer model based on limited transformer geometry is used to simulate evaluate the stresses on internal transformer insulation in the case of fast front transients. The model is validated for calculation of internal overvoltages with the test case from CIGRE brochure.

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Section: Grey Box Transformer Modelmentioning

confidence: 99%

Calculation of voltage distribution along the transformer winding using the wide band transformer model

Jurišić¹,

Bučar²,

Uglešić³

2022

joe

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“…The study of the winding geometry is another effort to estimate the elements of such a model [23][24][25]. The philosophy of such efforts is to model the geometry of a winding using Maxwell's equations to compute the inductance and capacitance matrices.…”

Section: Objective and Motivationmentioning

confidence: 99%

Enhanced modelling of the transformer winding high frequency parameters identification from measured frequency response analysis

Chanane

Houassine

Bouchhida

2019

IET Generation, Transmission & Distribution

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“…5 [12,15], where RH and R X present series resistances including cooper losses of each winding (skin effect and Joules losses), L H and L X present leakage inductance, R m and L m present core behaviour (including nonlinearity, saturation, hysteresis and other iron losses) and N H / N X is transformer ratio. The T-model of transformer is suitable for low frequency analysis (up to few kHz), while for analysis at higher frequencies more detailed transformer models should be used (such as Black Box, White Box and Grey Box) [14].…”

Section: Transformer Modellingmentioning

confidence: 99%

Influence of Cables on Power Transmission Network Frequency Response

Levačić¹,

Uglešić

Jurišić

et al. 2019

Teh. vjesn.

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Harmonic resonance is an important factor to be considered in a power transmission networks during connection of remote generation units with high-voltage cables (e.g. wind or solar power plants etc.). It is known that cable characteristics differ from characteristics of conventional overhead lines. Cable capacitance is far higher than capacitance of an equivalent overhead line, what can potentially lead to the low resonant frequencies which may be triggered by various switching events, such as transformer or shunt reactor energization etc. In this paper, possible consequences of power plant connection to transmission network with long HVAC cable are analysed, with regard to harmonic resonance and frequency response of the network. The research has been conducted on developed model of the power transmission network in the software for calculation of electro-magnetic transients EMTP-RV.

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High frequency transformer model derived from limited information about the transformer geometry

Cited by 14 publications

References 25 publications

Calculation of voltage distribution along the transformer winding using the wide band transformer model

Calculation of voltage distribution along the transformer winding using the wide band transformer model

Enhanced modelling of the transformer winding high frequency parameters identification from measured frequency response analysis

Influence of Cables on Power Transmission Network Frequency Response

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