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Method for reducing adverse effects of train passing through double-flow system neutral section

An adverse effect, neutral segment technology used in vehicle components, power lines, transportation and packaging to address issues such as reducing or eliminating current

Active Publication Date: 2021-02-09
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is impossible to reduce or eliminate this current by making some improvements to the train, so some measures can only be taken on the ground to reduce its impact

Method used

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  • Method for reducing adverse effects of train passing through double-flow system neutral section
  • Method for reducing adverse effects of train passing through double-flow system neutral section
  • Method for reducing adverse effects of train passing through double-flow system neutral section

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] In the present invention, when the train passes through the neutral section of the double-flow system, the PD connection is as follows: figure 1 As shown, the specific implementation steps are:

[0024] 1) If there is no horizontal connection between the up and down rails on the DC side and the AC side near the neutral section, use cables to connect the up and down rails at the two points near the neutral section to avoid setting up two sets of identical rails. Protection device PD to reduce investment costs.

[0025] 2) Set a set of protection device PD in this section, such as figure 2 shown. Use cables to connect it to the horizontal connection points on the DC side and the AC side. When the train passes through the neutral section, the cable resistance and the train resistance are connected in parallel, and ...

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PUM

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Abstract

The invention discloses a method for reducing adverse effects of a train passing through a double-current system neutral section, the method comprises the following steps of: transversely connecting uplink and downlink steel rails on a direct-current side and an alternating-current side, and then installing a set of protective device PD between transverse connections on the alternating-current side and the direct-current side; when a train passes through the neutral section, a switch in the PD is closed to be connected with the steel rail in the section in parallel, so that the current passingthrough the train is reduced as much as possible; and after the train passes through the section, the electric connection is disconnected. According to the invention, the adverse effects on the railway and the train when the train passes through the double-current neutral section can be reduced.

Description

technical field [0001] The invention belongs to the field of traction power supply for electrified railways, and in particular relates to a method for reducing adverse effects of trains passing through a neutral section of a double-flow system. Background technique [0002] In countries all over the world, the traction power supply of trunk railways and subway lines generally uses different power supply systems. Mainline railways generally use AC 25kV power supply, while subways mostly use DC 1500V or 3000V power supply. In order to realize the same-station transfer or through operation of the trunk railway and the subway, the trunk railway should be docked with the subway. Due to the existence of two power supply systems, a neutral section is generally set up at the junction of the trunk railway and the subway. If the length of the neutral section is less than the length of the train, the rails on both sides of the neutral section will be connected when the train passes t...

Claims

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Application Information

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IPC IPC(8): B60M3/04
CPCB60M3/04
Inventor 马庆安刘炜李雪飞
Owner SOUTHWEST JIAOTONG UNIV
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