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Method for calculating initial static balanced state of electrified railway contact network

An electrified railway, balanced state technology, applied in computing, power supply lines, electrical digital data processing, etc., can solve problems such as overall analysis of unfavorable structures

Inactive Publication Date: 2015-01-07
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First of all, most of the research is to calculate the catenary in the two-dimensional plane, which is not applicable to the more general situation of multi-span catenary or equal contact line and catenary cables are not in the same plane; secondly, the catenary cables and catenary lines are separated The idea of ​​analysis is not conducive to the overall analysis of the structure; moreover, the existing literature does not add the locator element to the catenary to calculate

Method used

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  • Method for calculating initial static balanced state of electrified railway contact network
  • Method for calculating initial static balanced state of electrified railway contact network
  • Method for calculating initial static balanced state of electrified railway contact network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Embodiment one two-span simple chain suspension catenary

[0065] attached Figure 4 It is a schematic diagram of a two-span catenary link. Among them, the left and right ends of the contact line and load-bearing cable line are fixed, and the two lines and cables on the right side meet the tension value T 1 with T 2 , the span is l k , the locator connects the contact line with a certain slope, the catenary cable can slide in the x direction at the locating point, and the upper end of the locator is fixed by a hinge, f c is the gravity of the clamp at each suspension point, the structure height is h, and the distribution law of the hanging string in the x direction is l sd -l dd -...-l dd -l sd , the number of hanging strings in one span is n d . Attached Figure 5 The catenary is meshed, and the catenary cable and the contact line between the suspension strings are divided into a cable unit, and the suspension strings and locators are regarded as rod units. ...

Embodiment 2

[0082] Embodiment two two-span elastic chain suspension

[0083] attached Image 6 It is a schematic diagram of two spans of an elastic chain suspension catenary. Among them, the left and right ends of the contact line and load-bearing cable line are fixed, and the two lines and cables on the right side meet the tension value T 1 with T 2 , the span is l k , the locator connects the contact line with a certain slope, the catenary cable can slide in the x direction at the locating point, and the upper end of the locator is fixed by a hinge, f c is the gravity of the clamp at each suspension point, the structure height is h, and the distribution law of the hanging string in the x direction is l sd -l dd -...-l dd -l sd , the number of hanging strings in one span is n d , the span of the elastic sling is l s , the sling tension is T s . The specific parameters of the bomb chain catenary in the second embodiment are shown in Table 5.

[0084] Table 5 Catenary parameter...

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Abstract

The invention discloses an electrified railway contact network static calculation method, comprising the steps of: dispersing the structure of the contact network as units and nodes, using cable units in space to simulate contact lines and carrier cables, using rod units to simulate hanging strings and positioners, assembling a unit tangent matrix of the cable and rod units, assembling an endpoint force column matrix of the cables and the rods, through considering gravities of cable clamps and the hanging strings and taking node coordinates and unit lengths as unknown quantities, constructing a structure incremental balance equation according to unit connecting relation, and thereby completing static calculation of the whole contact network. The electrified railway contact network static calculation method can complete static calculation of the contact network in a three-dimensional space, is applicable to three-dimensional problems of calculating a three-dimensional multi-span contact network or an inclined catenary contact network with a stagger value; the positioner element is added into the calculation, and the calculation method can be applied to different hanging forms such as simple chain hanging and elastic chain hanging and the like, thus being more common in application range.

Description

technical field [0001] The method for calculating the initial static equilibrium state of the electrified railway catenary of the present invention is used to calculate the mechanical static equilibrium state of the catenary structure in the space when there is no external force, such as the shape of catenary cables and contact lines in the catenary, and the distribution of internal forces , the slope of the locator, the length of the hanging string, etc., are classified according to the International Patent Classification (IPC) and belong to the Department of Operations and Transportation; General Vehicles; Power Lines of Electric Vehicles or Devices Along the Rails; Overhead Lines and Accessories Used technical field. Background technique [0002] The electrified railway catenary system is a tension structure erected on the electrified railway line to transmit electric energy to the electric locomotive. In order to obtain a good pantograph-catenary current intake, some ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00B60M1/00
Inventor 刘志刚侯云昌宋洋汪宏睿
Owner SOUTHWEST JIAOTONG UNIV