DEVICE FOR TRANSMISSION OF THREE-PHASE ELECTRICAL ENERGY THROUGH DOUBLE-WIRE LINE Russian patent published in 2014 - IPC H02J3/04 

FIELD: electricity.

SUBSTANCE: invention is related to the area of electric engineering, and namely to the method of transmission of three-phase electrical energy through double-wire line. The device comprises a three-phase step-up transformer, which primary windings are coupled to the supply network while its secondary windings are coupled to the electric energy converter coupled to the transmitting double-wire line, which secondary windings are coupled to the electric energy converter supplying the three-phase receiving network. The first and second secondary windings of the three-phase step-up transformer are interconnected in series opposition and the third secondary winding is connected to the first one in series aiding, at that between beginnings of the first and second windings there is an adjustable capacitor bank to which the double-wire transmission line is connected and in-series with the third winding there is the second adjustable capacitor bank, second ends of the double-wire line are connected to the adjustable capacitor bank mounted between beginnings of the first and second windings interconnected in series opposition while the third winding of the step-down three-phase transformer is connected in series with the adjustable capacitor bank and in series with its first winding, at that wye-connected secondary windings of the step-down three-phase transformer are coupled to the three-phase user. In the other version of the invention primary windings of the step-up three-phase transformer are wye-connected and between beginnings of primary windings there are adjustable capacitor banks, and its first and second secondary windings are interconnected in series opposition, while the third one is in series aiding, to the beginnings of the second and third windings the double-wire transmission line is connected and to the line ends beginnings of the second and third windings of the three-phase step-sown transformer are connected in series aiding, its secondary windings are wye-connected and between beginnings of the windings there are adjustable capacitor banks.

EFFECT: generation of current curve with sinusoidal waveform.

2 cl, 3 dwg