Numerical Analysis on Short-Circuit Force Parameters of Windings for Power Transformer
The Simplified model of both calculating leakage magnetic field and mechanical force of windings at short circuit condition for a 120MVA/220kV power transformer is set up. The leakage magnetic field ‚ short-circuit force and stress in transformer windings are analyzed and their distributing characteristics are acquired respectively by using FEM. The calculation method and results are validated by withstanding short circuit strength test of the product. A number of useful suggestions are given for design of power transformers.
J. J. Liu et al., "Numerical Analysis on Short-Circuit Force Parameters of Windings for Power Transformer", Applied Mechanics and Materials, Vols. 138-139, pp. 764-769, 2012