DEVICE FOR STABILIZING CURRENT OF POWERFUL TRANSFORMING SUBSTATION Russian patent published in 2007 - IPC G05F1/253 

FIELD: electric engineering, in particular, systems for stabilizing current of powerful transforming substations of aluminum industry.

SUBSTANCE: in accordance to invention, in device for stabilizing current of powerful transforming substation, which device contains at three-phased volt-adding transformer, having at least two windings, reactive elements, represented by three-phased resonance reactor and three one-phased capacitor plants; three-phased auto-transformer, containing at least two windings, to one of which at least one of reactive elements is connected; phase windings of first winding of three-phased volt-adding transformer, phase windings of three-phased resonance reactor and one-phased capacitor plants are connected in form of tree Y-networks; phase windings of second winding of three-phased volt-adding transformer are connected to supply net and to load, it is proposed to introduce at least one additional phase-shifting winding, beginning of each one of phase windings of which is connected to supply net, and its end is connected to at least one winding of another phase of another winding of auto-transformer; also, in device for stabilizing current of powerful transformer substation auto-transformer may contain at least one voltage control switch; at least one of auto-transformer windings may contain control sections, connected to at least one of reactive elements, and to introduced voltage control switch; also, current stabilizing device for powerful transforming substation may contain at least one controllable three-phased reactor, while an additional winding, connected to introduced controllable three-phased reactor, may be introduced to auto-transformer.

EFFECT: creation of device for stabilizing current of powerful transforming substation, having optimal mass-dimensional characteristics, decreased manufacturing costs, and also decreased level of electric losses.

2 cl, 2 dwg