Method for determining the distance between double pantographs to improve the current quality of double pantographs in high-speed railway

A technology for high-speed railways and pantographs, applied in the direction of design optimization/simulation, etc., can solve the problems of the deterioration of the current receiving quality of the rear bow, and the lack of consideration of the matching relationship of the pantograph catenary, so as to improve the current receiving quality and improve the accuracy. and safety, the effect of improving dynamic performance

Inactive Publication Date: 2020-05-08
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

So far, the matching relationship between pantograph spacing and catenary parameters has not been considered in the design of high-speed railways in China, resulting in a significant deterioration of the quality of the rear bow

Method used

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  • Method for determining the distance between double pantographs to improve the current quality of double pantographs in high-speed railway
  • Method for determining the distance between double pantographs to improve the current quality of double pantographs in high-speed railway
  • Method for determining the distance between double pantographs to improve the current quality of double pantographs in high-speed railway

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. The present invention is based on the wave propagation law to improve the double pantograph distance determination method of the high-speed railway double pantograph current receiving quality. Under the condition of the high-speed railway double pantograph operation, based on the contact line wave propagation law and the resonance and vibration elimination mechanism, it can be determined Double bow spacing to improve the flow quality of double bows. Include the following steps:

[0020] A. Using the catenary model based on the finite element theory, the constant force is used to fix the speed v The numerical simulation calculation of the sweeping contact line obtains the dynamic response of the contact line at the middle span of the catenary, outputs the vertical displacement time history and vertical velocity time history of the conta...

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Abstract

The invention discloses a method for determining the distance between double pantographs to improve the current quality of double pantographs in high-speed railways. Under the condition of double pantographs running in high-speed railways, based on the law of contact line fluctuation propagation and the mechanism of resonance and vibration elimination, different methods are proposed. Calculation formulas of favorable and unfavorable distances between double bows for flow-receiving mass of double bows under speed. Therefore, in the catenary design process, the parameters of the catenary are designed so that the distance between the pantographs of the existing EMU is close to the favorable distance between the double bows at the design speed, thereby improving the current quality of the double bows of the high-speed rail. The invention makes up for the shortcomings of the traditional design method, and can improve the accuracy and safety of subsequent engineering design.

Description

technical field [0001] The invention relates to the technical field of electrified railway catenary and its dynamic current receiving characteristics, in particular to a method for determining the distance between double pantographs for improving the current receiving quality of double pantographs in high-speed railways. Background technique [0002] Over the past few decades, China's high-speed rail network has grown staggeringly. However, the huge pressure of population migration (especially during the Spring Festival travel season) still poses a great challenge to the carrying capacity of high-speed railways. In order to increase the carrying capacity of high-speed trains, two EMUs are usually reconnected on some existing high-speed railway lines. In this case, the high-speed trains use double pantographs to run simultaneously. Double-bow operation will bring new challenges to high-speed railway technology, one of which is that when the shock wave generated on the contac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20
Inventor 刘志刚徐钊宋洋
Owner SOUTHWEST JIAOTONG UNIV
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