SU1505804A1 - A.c. traction power supply device - Google Patents

Abstract

This invention relates to the power supply of a traction AC mains. The purpose of the invention is to increase efficiency and reliability by reducing energy losses and limiting the electrical and magnetic effect of the traction network on adjacent lines. The device contains a transformer of a traction substation, the primary winding of which is connected to the supply line, and the secondary winding 1 is connected to a three-phase line consisting of a contact network 2, additional wires 4 and a rail network 5. The device is equipped on the stretch with three-phase transformers, the primary winding 8 of each of which are connected to the aforementioned three-phase line, the secondary winding 9 is connected to adjustable reactors 10, and the additional secondary winding 11 is connected to line 12 of no steaming consumers. The single-phase electric rolling stock 7 connected to the contact network 2 and the rail network 5 receives power from the secondary winding 1 of the transformer of the traction substation via a three-phase line through the primary windings 8 of three-phase transformers installed on the stretch. 1 hp ff, 1 ill.

Description

31505

The device is equipped with three-phase transformers on the stretch, the primary winding 8 of each of which is connected to the said three-phase line, the second winding 9 is connected to one another; reactive resistance of 10 ,, and an additional secondary

Winding 11 is connected to line 12 of non-consumer beef. The single-phase electric rolling stock 7, connected to the contact network 2 and the rail network 5, receives power from the secondary winding 1 of the transformer of the traction substation via a three-phase line through the primary windings 8 of three-phase transformers installed on the stage. 1 hp ff, 1 ill.

The invention relates to an electrically operated transport and can be used in an electrical power supply system of AC power grids.

The purpose of the invention is povpopenie; efficiency and reliability of the system by reducing energy losses and limiting the electric and magnetic effects on adjacent lines.

The drawing shows the scheme of the system1) 1 t AC power supply with three-phase transformers.

The device for traction power supply of alternating current contains a transformer of a traction substation, the primary winding of which is connected to the supply line (not shown), and the secondary winding 1 - one phase to the contact network 2 with the amplifying wire 3, the other phase to the additional wires 4 and the third phase - to the rail network 5 with a shielding wire 6. The rolling stock is connected to the contact network 2 and the rail network 5. Three phase transformers, primary winding pins 8 are installed on the stretch at the calculated distance from each other each of which is connected respectively to the contact network 2, additional wires 4 and the rail network 5, and the terminals of the secondary winding 9, connected either to a triangle or to a star, are connected to a three-phase adjustable mo reactive resistance 10. An additional secondary winding 11 of a three-phase transformer is connected On line 12 there are no gov consumers (not shown).

The power supply device operates as follows

The energy from the secondary winding 1 of a transformer of a thru substation via a three-phase line consisting of a contact network 2, a rail network 5 and additional wires 4 is transmitted to three-phase transformers installed on a stretch in points B and D between which there is an electrolytic composition 7, which receives power from these transformers via a single-phase line, a contact network - a rail network. The values of the phase resistances, Z of the three-phase reactive load 10 are established from the condition of equality of the currents T, 1, 1s, respectively, in the contact network 2 additional wires 4 and the rail network 5.

The transfer of energy to single-phase electromotive composition through three-phase transformers provides a significant reduction in voltage and energy losses in the traction network and a decrease in the electrical and magnetic effect of the latter on adjacent lines, as well as a decrease in the intensity of the electric field in the electrified railway zone.

Regulation of the resistance of the phases Za, Z and Zf. The reactive (capacitive) resistance of 10 secondary windings of 9 three-phase transformers provides load balancing of the transformer of a traction substation.

Claims (1)

1. An AC power traction device containing a transformer of a traction substation, the primary winding of which is connected to the supply line, and the secondary winding is connected in one phase to the contact network with amplifying wires, and the other phase to the rail 515058046 networks with shielding wires, from-but to the contact network, rail network characterized by the fact that these additional wires the purpose of increasing the efficiency and the secondary winding - to a three-phase reliability by reducing the loss of energy-controlled reactive resistance and limiting electroplating. magnetic influence on adjacent lines, 2, The device according to claim 1, about 1 ton of ion is supplied with an additional wire, so that connected to the third phase of the secondary-expansion of the functional potential winding of the transformer by means of power supply there is no beef substations, and located on ne-consumers, three-phase transformers, three-phase transformers, the tori are equipped with an additional secondary winding of the primary winding with each winding connected to the line of which the respective consumers are connected-no.