Line space geometric state parameter detecting method for high-speed rail overhead line system

Abstract

The invention relates to a line space geometric state parameter detecting method for a high-speed rail overhead line system and belongs to the field of fault detection of the electrification rail overhead line system. The invention aims to provide a line space geometric state parameter comprehensive evaluation method for the high-speed rail overhead line system. The method comprises the steps that a laser distance meter is used for measuring geometric parameter values of a line of the overhead line system and important equipment machines; the geometric parameter change law of the overhead line system under various external conditions is mastered in the aspects of line variation caused by temperature changes, change conditions of deviation of the overhead line along with wind speed, and friction deviation of the overhead line when trains with different time speeds pass; a theoretical model of the corrosion rate of the overhead line system in the air under the electrochemical polarization control condition is set up for studying the durability of the overhead line system to form a comprehensive evaluation system. Operation in a maintenance work area can be guided according to the change trend of the line space geometric parameters of the overhead line system, and the work efficiency of maintaining the overhead line system is improved.

Description

technical field [0001] This patent belongs to the field of catenary fault detection for electrified railways, and involves the research on the change law of the parameter state of the catenary leads, especially the detection and evaluation of the change law of the spatial geometric parameters that lead to collision and wear between the catenary leads under different external conditions. Background technique [0002] The standardization of spatial geometric parameters of catenary leads in high-speed railways is the cornerstone to ensure good catenary operation performance. According to the management and tracking experience of specific high-speed railway sections in Shanghai, it is found that the external air temperature, wind speed changes, vehicle speeds continue to increase, and operation time and other factors cause contact The change of the spatial geometric relationship of the network thread is very obvious. When the mechanical change reaches a certain level, it will af...

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Problems solved by technology

[0004] At present, relevant research mainly focuses on the establishment and analysis of the pantograph-catenary coupling model, and studies the uplift and wear of the catenary wire. There is no systematic research on the factors and laws of the spatial geometric spacing of catenary wires.

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