Trunk line electrification contact system in strong wind environment and parameter determination method thereof

A catenary and environmental technology, applied in the fields of electrical digital data processing, power supply lines, special data processing applications, etc., can solve problems such as the lack of mature experience and theory of catenary technology, achieve good application prospects, ensure safety and reliability, and improve The effect of structural strength

Active Publication Date: 2012-10-31
CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Catenary technology under strong wind conditions in Xinjiang region has no mature experience and theory at home and abroad

Method used

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  • Trunk line electrification contact system in strong wind environment and parameter determination method thereof
  • Trunk line electrification contact system in strong wind environment and parameter determination method thereof
  • Trunk line electrification contact system in strong wind environment and parameter determination method thereof

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Experimental program
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Embodiment 1

[0034] The various technical parameters of the electrified railway catenary under the strong wind environment involved in this embodiment are technologies obtained by taking into account the strength, rigidity, reliability, wind resistance stability of the catenary system and the dynamic current receiving performance of the pantograph-catenary system. Program. The driving speed is 250km / h, and the specific parameter determination process is as follows:

[0035] (1) Using CFD numerical simulation calculation and wind tunnel test to study the change law of wind speed coefficient within the range of catenary height under different windscreen heights, that is, different heights of windscreens have different catenary height areas where the wind speed coefficient changes sharply, The higher the height of the windscreen, the more favorable it is to keep the wind speed coefficient at the contact line and the catenary away from the maximum value, and the smaller the height of the caten...

Embodiment 2

[0053] The various technical parameters of the electrified railway catenary under the strong wind environment involved in this embodiment are technologies obtained by taking into account the strength, rigidity, reliability, wind resistance stability of the catenary system and the dynamic current receiving performance of the pantograph-catenary system. Program. The driving speed is 160km / h, and the specific parameter determination process is as follows:

[0054] (1) Using CFD numerical simulation calculation and wind tunnel test to study the change law of wind speed coefficient within the range of catenary height under different windscreen heights, that is, different heights of windscreens have different catenary height areas where the wind speed coefficient changes sharply, The higher the height of the windscreen, the more favorable it is to keep the wind speed coefficient at the contact line and the catenary away from the maximum value, and the smaller the height of the caten...

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Abstract

The invention relates to a trunk line electrification contact system in a strong wind environment and a parameter determination method thereof. A strong wind effect on a wind area and a wind gap enables a contact system to generate a high and complicated vibration and windage yaw, dynamic quality of a pantograph-catenary operation is affected, and pantograph-catenary contact safety and contact system structure safety are threatened. According to the trunk line electrification contact system in the strong wind environment and the parameter determination method thereof, a computational fluid dynamics (CFD) numerical analog computation, a contact system wind-induced response finite-element analysis, a pantograph-catenary simulation, a wind tunnel test and a field engineering test are comprehensively utilized to propose the contact system which is comprehensively excellent in structural strength, rigidity, reliability, wind resistance stability and pantograph-catenary dynamic current collection performance, namely, a simple catenary suspension system is utilized, according to the simple catenary suspension system, a structural height is 1100mm, a span is less than 50m, tensile force of a carrier cable is matched with that of a contact line, the whole suspension system is in a steel cantilever structure, a transformation column and a turnout column are double-cantilever columns, and the contact line and the carrier cable achieve column branch anchoraging. Besides, the contact system which can adapt to the strong wind condition is provided, so that the safe reliability of the contact system structure under the action of long-term strong wind can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of railway electrification, and in particular relates to a railway electrification catenary in a strong wind environment and a parameter determination method thereof. Background technique [0002] With the development of electrified railways, especially in unfavorable environmental conditions such as windy areas and tuyeres, the safety of catenary operation is more and more affected by strong winds. The strong wind effect of the wind area and the tuyere and the vortex wind field effect of the tunnel mouth will cause greater and more complex vibration and wind deflection of the catenary catenary, which not only affects the dynamic quality of pantograph-catenary operation, but even threatens the safety of pantograph-catenary contact and causes pantograph-catenary accidents. leading to interruption of railway operations. [0003] The natural conditions in Xinjiang's gale area are harsh, the wind is strong, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60M1/234G06F17/50
Inventor 田志军刘改红韩佳栋赵玮廖海黎吴积钦马存明孙永革王玉环郭凤平张学武刘勇王洪林宋杰郑刚李晋宫衍圣
Owner CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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