High-speed railway sling pre-arrangement method for compensating effect of contact line wear
A high-speed railway and contact wire technology, applied in the direction of overhead lines, etc., can solve problems such as harsh service conditions, and achieve the effect of long service life and good performance
Active Publication Date: 2019-01-04
WUHAN UNIV OF TECH
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Problems solved by technology
Its service conditions are harsh, and after a long period of operation, the parts will inevitably wear out, which will lead to changes in the structural state and performance of the catenary
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[0041] Below by embodiment, in conjunction with accompanying drawing, the technical scheme of the present invention is described further specifically, as Figure 1-2 As shown, each line on the figure represents the position of the contact line under different wear coefficients, the horizontal axis is the distance along the line, and the vertical axis is the height of the contact line. The allowable deviation of contact line height within a single anchor segment is ±30mm, the allowable range of contact line height difference between adjacent anchor points is 20mm, and the allowable range of contact line height difference between adjacent hanging strings is 10mm. It can be calculated that when the wear coefficient is 0.2, the height deviation of the contact line in the anchor section is 32.62mm, which exceeds the specified value by 30mm; It is 1.74mm, and the change is small.
[0042] Such as image 3 As shown in Fig. 1 , the height change diagram of the contact line under dif...
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The invention provides a high-speed railway sling pre-arrangement method for compensating the effect of contact line wear. In the one-time integral installation process of the contact line, 1 / 2 of thelifting amount of the contact line suspension point when the wear coefficient is the maximum acceptable value is taken as the reserved slack of the suspension point, and the following steps are carried out: (1) solving the initial equilibrium state of the contact line; (2) pre-fitting of sling; (3) calculating wear contact line parameters; (4) establishing the calculation model of catenary wear;5) calculating that change value of the guide height of the worn catenary; 6. calculating that pre-arranged length of the catenary sling. By reasonably setting the reserved slack of the contact wire suspension point, the invention can gradually approach the ideal guide height after abrasion and then deviate from the ideal guide height again, thus ensuring that the geometrical smoothness fluctuation deviates less from the ideal value in the whole service cycle of the catenary, thereby obtaining better service performance and longer service life.
Description
technical field [0001] The invention belongs to the field of electrified railways, and in particular relates to a high-speed railway hanging string preconfiguration method for compensating the impact of contact wire wear. Background technique [0002] At present, my country has realized the networked operation of high-speed rail, and the catenary is an important part of the high-speed railway traction power supply system. Its service conditions are harsh, and after a long period of operation, the parts will inevitably wear out, which will lead to changes in the structural state and performance of the catenary. The contact wire bears the high-speed sliding friction of the pantograph slide, and bears both mechanical and electrical losses. After the contact line wears out, the non-uniformity of conductance in the whole anchor section gradually deteriorates and deviates from the initial design value. Considering the performance of the catenary over the entire service life, it ...
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IPC IPC(8): B60M1/28
CPCB60M1/28
Inventor 阮杰林炜钰路利彬余昉
Owner WUHAN UNIV OF TECH