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

A catenary and environmental technology, applied in electrical digital data processing, power supply lines, special data processing applications, etc., can solve the problems of lack of mature experience and theory in catenary technology, and achieve good application prospects, strong applicability, and accurate data. reliable results

Active Publication Date: 2014-08-13
CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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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

Examples

Experimental program
Comparison scheme
Effect test

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. plan. 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 catenary...

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 railway electrification catenary in a strong wind environment and a parameter determination method thereof. The strong wind in the wind area and tuyere will cause greater and more complex vibration and wind deflection of the catenary, which will affect the dynamic quality of pantograph-catenary operation and threaten the safety of pantograph-catenary contact and catenary structure. The invention comprehensively adopts CFD numerical simulation calculation, catenary wind-induced response finite element analysis, pantograph-catenary simulation, wind tunnel test and field engineering test, and proposes structural strength, stiffness, reliability, wind resistance stability and pantograph-catenary dynamic flow performance A well-integrated catenary, that is, adopt a structure height of 1100mm, a span of no more than 50m, a proper match between the tension of the catenary cable and the tension of the contact line, the overall steel arm structure, the conversion column and the turnout column as double arm columns, the contact line and the contact line A simple chain suspension system anchored by catenary cables. The invention proposes a catenary adaptable to strong wind conditions, which ensures the safety and reliability of the catenary structure under the action of long-term strong winds.

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 Patents(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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