The invention discloses a
transformer winding strength detection method based on a
short circuit test, and the method comprises the following steps: S1, determining winding wire cake parameters according to a
transformer parameter table, and obtaining the size of a
transformer single cake, the size of a supporting strip, and the size of a
cushion block; and S2, according to the size of the single cake obtained in the step S1, ignoring a supporting strip and a
cushion block, uniformly distributing the compression height of the winding to each oil duct, constructing a two-dimensional cake-by-cake model, applying single short-circuit
impact current excitation to the two-dimensional cake-by-cake model, and carrying out coupled electromagnetic-structure field calculation to obtain displacement deformation distribution of each wire cake. The boundary constraint effect of the supporting strips and the
cushion blocks is considered in the three-dimensional single-line cake model, and the stress condition of the winding under short-circuit
impact can be simulated more accurately. The
simulation analysis considering the boundary constraint can more truly reflect the deformation and
stress distribution of the winding under the short-circuit
impact, and provides more reliable data support for evaluating the winding strength.