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Two-side feeding method for electrified railways

A technology for electrified railways and power supply methods, applied in power lines, transportation and packaging, vehicle components, etc., to achieve the effects of superior performance, saving electricity costs, and advanced technology

Active Publication Date: 2019-08-16
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention proposes a bilateral power supply method for electrified railways, which can effectively solve the technical problem of canceling the electric split phase of the partition in the traction network and adjusting the voltage phase of the feeder line of the traction substation through a voltage compensation device

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  • Two-side feeding method for electrified railways
  • Two-side feeding method for electrified railways
  • Two-side feeding method for electrified railways

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Embodiment Construction

[0022] In order to better understand the present invention, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] A bilateral power supply method for electrified railways, including traction substation SS k and adjacent traction substation SS k+1 And the traction network OCS, subdivision SP k ; The traction substation SS k Built-in traction transformer TT k , voltage compensation device PHC k ; The voltage compensation device PHC k Including High Voltage Shunt Transformer HMT k , thyristor valve group TH k , controller CD k , traction series transformer TR k ; Wherein, the traction transformer TT k , voltage compensation device PHC k Both are single-phase structure, high-voltage shunt transformer HMT k One end a of the primary winding and the traction transformer TT k The midpoint of the primary winding is connected; the traction transformer TT k The primary winding is connected to th...

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Abstract

The invention discloses a two-side feeding method for electrified railways, and relates to the technical field of alternating current electrified railway power supply. A railway power supply system used in the method is composed of traction substations, and traction networks and partitions among the traction substations, the traction substations are composed of traction transformers and voltage compensation devices, and circuit breakers in the partitions communicate with the traction networks on both sides of the partitions to form two-side feeding; and the feeder voltage of the adjacent traction stations and the feeder voltage of the traction stations can be obtained in real time through the optical fiber communication voltage compensation devices, when output voltage phases of the two traction transformers are not consistent, the voltage compensation devices are used for adjusting the feeder voltage phase of one of the substations to decrease the voltage phase difference with the adjacent traction stations, and thus the equalization current generated in the traction networks due to the fact that the traction power supply system are connected in parallel with an electric system isreduced or even eliminated.

Description

technical field [0001] The invention relates to the technical field of bilateral power supply for AC electrified railways, in particular to a method for implementing bilateral power supply by canceling partitions and separating phases for electrified railways. Background technique [0002] my country's electrified railway adopts power frequency single-phase AC system. In order to reduce the negative sequence effect caused by single-phase traction load in the power system, whether it is a normal-speed railway or a high-speed railway, traction substations are connected by commutation. After the phase commutation connection is adopted, the voltages of each power supply section are different in phase, so it is necessary to set up an electrical phase splitting link. The electrical phase separation link has greatly restricted the development of high-speed railways and heavy-haul railways, and has become a weak link in the traction network. [0003] The ultimate goal of traction p...

Claims

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Application Information

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IPC IPC(8): B60M3/00B60M3/02
CPCB60M3/00B60M3/02
Inventor 张丽艳李鑫梁世文杨亮辉李群湛
Owner SOUTHWEST JIAOTONG UNIV
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