science-review.ru
Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440
ISSN 2500-0799
ПИ №ФС77-57440
DEFINITION OF DEFORMATIONS OF WIRES OF THE WINDING OF THE TRANSFORMER, CAUSED BY CURRENT OF SHORT CIRCUIT
239 KB
Consideration of longitudinal and cross deformations of the conductor of a winding of the transformer, caused by current of short circuit is given. The conclusion of the main useful ratios, allowing to estimate lengthening and shift of conductors in a winding at known current is considered, and also calculation of a field of distribution of spatial deformation of conductors is given in a lonely winding. In work the example of calculation of distribution of ponderomotive forces for conductors of a winding of the transformer of round and rectangular section of c is given by use of a method of final elements. For calculation of distribution of ponderomotive forces the system of the equations of Maxwell and a tensor of a tension of Maxwell was used. For realization of a method of final elements the COMSOL Multiphysics package was used. In the given model the current of short circuit exceeding current of a normal mode by 3 times was considered. Distribution of vector magnetic potential of A, distribution of superficial forces of F and the resultant forces operating on the separate conductor is given.