Self-check type auto-passing neutral section system and auto-passing neutral section method of electrified railway

A technology of automatic over-phase separation and electrified railway, applied in power lines, transportation and packaging, vehicle components, etc., can solve problems such as power supply dead zone, mutual influence, loss, etc., to improve system reliability, avoid human interference, and power failure short time effect

Active Publication Date: 2013-08-07
SOUTHWEST JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are some disadvantages: during the phase separation process of the train, the train loses power for a long time, and there is a power supply dead zone; due to the connection of the vacuum switch coil, when the train enters the electric phase separation, arcs and network voltage mutations will occur at the fracture , causing train pantograph slides and contactors to burn; a set of switches is redundant, causing unnecessary losses; it can only meet the excessive phase separation of trains below 100km / h, and is not suitable for high-speed railways
However, in this kind of over-phase separation scheme, the induction device that needs the ground position signal will cause mutual influence or even interference between the over-phase separation device and other ground devices, and it will also be artificially damaged, with serious consequences

Method used

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  • Self-check type auto-passing neutral section system and auto-passing neutral section method of electrified railway
  • Self-check type auto-passing neutral section system and auto-passing neutral section method of electrified railway

Examples

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Comparison scheme
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Embodiment 1

[0028] figure 1 It shows that a specific implementation of the present invention is an electrified railway self-inspection type automatic phase separation system, including catenary one 1, catenary two 2, neutral section 0, catenary one 1 passes through electric segment one S1 is connected to neutral segment 0, and catenary 2 is connected to neutral segment 0 through electrical segment 2 S2, where:

[0029] The catenary-1 is connected in series with the current transformer-H1 near the electric segment-S1, and the current transformer-H3 and the normally open switch-K1 are connected in series and then connected in parallel on the electric segment-S1;

[0030] The catenary 2 2 is connected in series with the current transformer 2 H2 near the electrical segment 2 S2, and the current transformer 4 H4 and the normally open switch 2 K2 are connected in series and then connected in parallel on the electrical segment 2 S2;

[0031] Current transformer one H1, current transformer two H...

Embodiment 2

[0041] figure 2 It is shown that the structure of this example is basically the same as that of the first embodiment, the difference is only that the current transformer one H1 is connected in parallel with the third electrical segment S3, and the current transformer two H2 is connected with the fourth electric segment S4 in parallel.

[0042] In this way, electric segment three S3 and electric segment four S4 can be connected in series in catenary one 1 and catenary two 2 respectively, while current transformer one H1 and current transformer two H2 are respectively connected in parallel in electric segment three S3 , Electric segment four S4 on. Thereby, the connection of the catenary here is smoother, and the train can take the flow more reliably.

[0043] In order to reduce contact line segmentation, current transformer 1 H1 and current transformer 2 H2 can be implemented as clamp-type current transformers. The shunt relationship between the contact wires measures the cu...

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PUM

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Abstract

The invention relates to a self-check type auto-passing neutral section system and an auto-passing neutral section method of an electrified railway. The system comprises the following components: a contact net I is connected with a neutral section through an electric sub-section I, and a contact net II is connected with the neutral section through an electric sub-section II; the contact I is serially connected with a current transformer I close to the electric sub-section I, and a current transformer III is serially connected with a normally-opened switch I and then connected with the electric sub-section I in parallel; the contact net II is serially connected with a current transformer II close to the electric sub-section II, and a current transformer IV is serially connected with a normally-opened switch II and then connected with the electric sub-section II in parallel; and the current transformer I, the current transformer II, the current transformer III, the current transformer IV, the normally-opened switch I and the normally-opened switch II are all electrically connected with a measurement and control unit. The system is simple in structure, fewer in investment and convenient to implement, and auto-passing neutral section of the electrified railway can be realized more simply and conveniently.

Description

technical field [0001] The invention relates to an electrified railway self-inspection type automatic phase separation system and an automatic phase separation method thereof. Background technique [0002] my country's electrified railway generally adopts single-phase power frequency AC system. In order to make the three-phase load of the power system as balanced as possible, the electrified railway often adopts the scheme of alternating phase sequence and phase-separated partition power supply. The adjacent power supply intervals at the phase-separation partition are divided by air or insulators to form insulating electrical phase separation, referred to as electrical phase separation or phase separation. [0003] In order to prevent electric locomotives from burning catenary suspension components due to phase splitting and even causing accidents such as phase-to-phase short circuit, when the train passes through phase splitting, the driver needs to manually degrade, turn o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60M3/04
Inventor 李群湛赵元哲李子晗周福林易东李亚楠陈民武刘炜
Owner SOUTHWEST JIAOTONG UNIV
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