FIELD: electricity.
SUBSTANCE: equalizing current neutralizing device in neutral bus of three-phase power transmission line is claimed, which is connected to the transformer substation on one side and the consumer with varying phase loads on the star circuit on the other side, characterized in that it uses a single-phase transformer with three identical primary windings, which starting terminals are connected to neutral terminals of the secondary windings of the phase voltages of the substation three-phase power transformer, and their ends are connected to each other in a node, and the secondary winding of this transformer is connected in opposition-series between said node and neutral bus of the line, wherein the number of turns of this winding is chosen so that voltage induced therein proportional to equalizing current as geometric sum of phase currents is equal to and directed to opposite voltage which would fall in zero bus resistance from the flow of equalizing current therein in the absence of given device.
EFFECT: reduction of power losses during its transportation through four-wire line.
2 dwg
