CONTROL DEVICE FOR TRANSFORMER UNDER LOAD Russian patent published in 2021 - IPC H02M5/12 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the field of electric engineering and electric power industry, in particular to the power transformers transformation ratio regulators. Technical result is achieved by the fact that in the known transformer voltage control device with the primary sectioned winding under load containing bidirectional thyristor keys, one of terminals of which are connected to control branches of the primary sectioned winding of the transformer, current and voltage sensors of the supply network, by their outputs connected to the control unit of bidirectional thyristor keys, and primary sectioned winding is connected to supply mains, primary sectionalized winding of transformer is made in form of two separate galvanically isolated semi-windings with control branches, and outputs of bidirectional thyristor keys, free from connection to control branches of galvanically isolated semi-windings, are connected to each other.

EFFECT: technical result consists in increasing the number of levels of control of output voltage of transformer with primary sectioned winding.

1 cl, 1 dwg