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Power grid access structure for railway traction stations

A railway traction and traction station technology, applied in electrical components, circuit devices, AC network circuits, etc., can solve the problems of economical defects, difficult station selection and line selection, etc., so as to reduce construction difficulty and overall cost, and reduce the number of points. demand, avoid the effect of retrofit

Pending Publication Date: 2019-12-24
SOUTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For areas with complex terrain conditions, where substation sites and line channel resources are relatively tight, it will be difficult to select stations and lines when traction stations are connected to new lines or new substations. On the other hand, the scheme is economical. There are also flaws

Method used

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  • Power grid access structure for railway traction stations
  • Power grid access structure for railway traction stations
  • Power grid access structure for railway traction stations

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as Figure 7 As shown, a railway traction station power grid access structure provided in Embodiment 1 includes a first substation 1 and a second substation 2, and is located between the first substation 1 and the second substation 2 along the first The first railway traction station 31 and the second railway traction station 32 are arranged in sequence from the substation 1 to the second substation 2, and the first substation 1 and the first railway traction station 31 are connected by a double circuit that can be cut off and switched The line is electrically connected, the incoming line bus of the first railway traction station 31 and the incoming line side bus of the second railway traction station 32 are electrically connected through a single circuit circuit that can be cut off, and the second railway traction The station 32 is electrically connected with the second substation 2 through a disconnectable single circuit line.

[0040] Among them, the first rail...

Embodiment 2

[0048] Such as Figure 10 As shown, embodiment 2 is roughly the same as embodiment 1, and the main difference between the two is that: a third railway traction station 33 is also included, and the third railway traction station 33 is connected to the first substation 1 through a double circuit The line is electrically connected; or the double-circuit line passed between the third railway traction station 33 and the second substation 2 is electrically connected. Specifically, the third railway traction station 33 is electrically connected to the second substation 2 through a switchable and disconnectable double-circuit line. Among them, such as Figure 4 with Figure 10 In contrast, this setting method saves part of the wiring layout and has a good application prospect.

Embodiment 3

[0050] Such as Figure 11 As shown, embodiment 3 is roughly the same as embodiment 1, and the main difference between the two is that: a third railway traction station 33 and a fourth railway traction station 34 are also included, and the first substation 1 and the third railway traction station 33 are electrically connected through a double-circuit line, and the third railway traction station 33 and the fourth railway traction station 34 are electrically connected through a single-circuit line, and the fourth railway traction station 34 is connected to the second substation 2 Each railway traction station is located between the first substation 1 and the second substation 2, and each railway traction station follows the direction from the first substation 1 to the second substation 2, with the first railway traction The station 31, the fourth railway traction station 34, the second railway traction station 32 and the third railway traction station 33 are arranged in sequence....

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Abstract

The invention discloses a power grid access structure for railway traction stations, which belongs to the technical field of railway traction stations. The power grid access structure for railway traction stations is mainly characterized in that two railway traction stations are connected in series, so that the two railway traction stations can still be kept in a live-line operation state when onetransformer substation in a system has a full-stop fault, and the operation reliability of the railway traction stations is improved.

Description

technical field [0001] The invention relates to the technical field of railway traction stations, in particular to a grid connection structure of railway traction stations. Background technique [0002] The railway traction station is an electrical device and facility that provides electric energy, transforms and distributes electric energy to electrified railways or urban rail transit electric traction. The railway traction station transforms the electric energy sent through the power transmission line into a voltage suitable for rolling stock, and distributes it to the catenary or contact rail. [0003] "Guidelines for Connecting Electric Railway Traction Stations to the Power Grid" states: [0004] 1) The railway traction station should be powered by two power sources. When any power source fails, the other power source should supply power normally. [0005] 2) The two power sources of the railway traction station should be taken from two substations at different power ...

Claims

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Application Information

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IPC IPC(8): H02J3/00
Inventor 何志强郑勇晏小彬范宇
Owner SOUTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP CORP
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