本文介绍了变压器的发展现状及发展趋势,ZZDFPZ-405130/50

This paper introduces the development status and development trend of the transformer, the hazards and causes of ZZDFPZ-405130 / 500-180000 / 220 transformer leakage magnetic field and short circuit force. Under the short-circuit condition of the transformer, the winding will be subjected to radial force and axial short-circuit electromotive force. The field-circuit coupling method is used to establish a two-dimensional finite element simulation model of the winding to obtain data. Based on the short-circuit electrodynamic results of the transformer low-voltage winding, the buckling analysis method and the non-buckling analysis method are used to check and evaluate the radial stability of the low-voltage winding. <br>The radial stability of the high-voltage winding of the transformer is studied. Based on the mechanical theory, ANSYS software is used to establish a three-dimensional model of 1 to 92 wafers of the high-voltage winding. The short circuit electromotive force is applied to the corresponding wafer, and then it is solved by the transient analysis method to obtain the radial displacement deformation of each wafer. The main calculation data includes magnetic density calculation, radial force, axial force and short circuit strength calculation to ensure that the transformer winding has good stability under short circuit conditions. <br><br>Keywords: power transformer; leakage magnetic field; short-circuit electromotive force

This paper introduces the development status and development trend of transformer, ZZDFPZ-405130/500-180000/220 transformer leakage magnetic field and short-circuit force hazards and causes. Under the short-circuit condition, the winding will be subject to the short-circuit electric power of the spoke force and axial direction, and the data is obtained by establishing the two-dimensional finite element simulation model of the winding by the "field-road coupling" method. Based on the result of short-circuit electrodynamics, the low-voltage winding steam of low-voltage winding is evaluated for the stability of low-voltage winding spokes by the subserteric analysis method and non-subserteric analysis.<br>The radiation stability of the transformer high-voltage winding is studied, based on the mechanical theory, the three-dimensional model of 1 to 92 line cakes of the high-voltage winding synth is used by ANSYS software, and then the spoke short-circuit electric power of the high-voltage windings obtained before the high-voltage winding slot is applied to the corresponding line cake, and then the spoke-to displacement deformation of each line cake is obtained by means of transient analysis. The main calculation data include magnetic secret calculation, spoke force, axial force and short-circuit strength to ensure that the transformer winding has good stability under short-circuit conditions. <br><br>Keywords: power transformer; leaking magnetic field; short-circuit electric power

This paper introduces the current situation and development trend of transformer, the harm and cause of leakage magnetic field and short circuit force of zzdfpz-405130 / 500-180000 / 220 transformer. Under the condition of short-circuit, the winding will be subjected to radial force and axial short-circuit electrodynamic force. Based on the short-circuit electrodynamic results of the transformer low-voltage winding, the radial stability of the low-voltage winding is checked and evaluated by the buckling analysis method and the non buckling analysis method.<br>The radial stability of transformer high-voltage winding is studied. Based on the mechanical theory, a three-dimensional model of 1 ~ 92 coils of high-voltage winding is established by using ANSYS software. Then the radial short-circuit electric power of each coil of high-voltage winding calculated before is applied to the corresponding coils, and then the radial displacement deformation of each coil is obtained by the transient analysis method. The main calculation data include magnetic density calculation, radial force, axial force and short-circuit strength calculation to ensure that the transformer winding has good stability under short-circuit condition.<br>Key words: power transformer; leakage magnetic field; short circuit electric power