Simplified simulation model of continuously transposed cable for linear and nonlinear buckling analysis

Geissler, D.; Geissler, C.

doi:10.1016/j.matcom.2015.06.005

Cited by 3 publications

(1 citation statement)

References 6 publications

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“…However, this kind of simplification is only suitable for investigating the bending behavior in the radial direction, as it increases the bending stiffness in the axial direction. The validity of these simplifications has been shown in [12]. …”

Section: B Simplified Conductor Modelmentioning

confidence: 96%

Short-Circuit Strength of Power Transformer Windings-Verification of Tests by a Finite Element Analysis-Based Model

Geibler

2017

IEEE Trans. Power Delivery

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A test stand to evaluate the radial buckling strength of power transformer windings under the influence of electromagnetic forces is presented. The resulting conductor deformation can be measured in parallel to the sinusoidal test current. The proposed test results focus on the inception of forced buckling for continuously transposed conductors (CTCs), which are a special type of conductors often used in power transformer windings. In literature, there barely exist calculations to the radial buckling withstand capability of CTCs. Therefore, a Finite Element Analysis (FEA) based simulation model for this kind of conductor is proposed and verified by the tests. For this verification, three different CTC types are used. The final simulation model is based on a coupled analysis of magnetostatic force calculation and static structural deformation analysis. It suitably reproduces the measurement results from the dynamic short-circuit tests. Furthermore, a standard formula describing radial buckling phenomena inside power transformers is adapted for the use with CTCs.Index Terms-Power transformer, short circuit forces, continuously transposed cable (CTC), forced buckling, Finite Element Analysis (FEA). 0885-8977 (c)

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Section: B Simplified Conductor Modelmentioning

confidence: 96%