SU1689143A1 - Power supply system of alternating current track section - Google Patents

Abstract

The invention relates to the power industry and is intended to supply electricity to electrified AC railways. The goal is to improve energy performance. The system contains three-phase two-phase transformers 1, assembled according to Scott's scheme with a transformation ratio of one part equal to one, the second part, Y3 2 step-switch. The secondary windings of these transformers are connected between the contact suspension and the longitudinal supply wire and supply a voltage of 110 or 22 kV For the supply traction loads at the substation, special conclusions are made from the secondary windings, which are connected to the rails 13 by means of suction lines. They installed one-phase traction transformers 14 with the connection of the primary windings between the contact suspension and the longitudinal supply wire 8 and the secondary windings between the contact suspension 7 and the rails 13. Electric locomotives 15 receive power from two adjacent traction transformers. 2 Il. Yo

Description

A 8- - C

/ 7 ,, - /

 P

B

Tz

: U

7G Ya7:

 YY777

Claims (1)

Claim A traction power supply system for an AC section containing at least three feeder zones, a traction network with a longitudinal supply wire and transformer points between traction substations with transformers connected by primary windings to the phases of the transmission line and connected secondary windings with contact suspension of the corresponding feeder zone and longitudinal feed wire, the conclusions of the intermediate points of the secondary windings are connected to the rails, the inputs of the transformer points are connected between the contact th suspension and a longitudinal feed wire, and the outputs are between the contact suspension and the rail, characterized in that. For the purpose of improving energy indicators, traction substation transformers are made of three-phase-two-phase with a base and high-altitude parts, the primary windings of which are connected according to Scott's scheme, and 10 secondary windings are isolated from each other, the transformation coefficients of the base and high-altitude parts are 1 and UZ / 2, respectively , the longitudinal supply wire of each feeder zone is isolated 15 from the longitudinal wires of adjacent feeder zones and connected by ends to the first terminals of the secondary windings of three-phase two-phase transformers of neighboring Jagow substations with the same koeffi20 cient transformation, the second terminals of which are connected to the same catenary feeder zone. A__ 8__ FROM - WjfWHWW 77777 tshm, g. 77 777 777777777777777 ^ 7777 Editor A. Gratillo Compiled by N. Ketsaris Tehred M. Morgenthal Corrector T. Malets Order 3775 Circulation Subscribed VNIIIPI of the State Committee for Inventions and Discoveries under the State Committee for Science and Technology of the USSR 113035, Moscow, Zh-35, Raushskaya nab., 4/5 Production and Publishing Combine Patent, Uzhgorod, 101 Gagarin St.