定位器失效对接触网振动响应的影响研究

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Abstract Research purposes:Steady arm is a key component of OCS. Once a fault occurs, it will directly affect the safety of pantograph catenary current collection. It's necessary to study the influence of steady arm failure on the vibration response of OCS in order to implement fault diagnosis of steady arm. Firstly, through mechanism analysis, two kinds of faults are obtained, namely, wire clamp falling off and shackle falling off. Secondly, based on the fault simulation model of catenary steady arm, a catenary full-parameter fault simulation system is built to obtain the catenary vibration response parameters when the catenary steady arm fails. Finally, by analyzing the acceleration statistical data in the vertical and horizontal directions of the positioning point when the steady arm fails, the vibration acceleration response time and vibration frequency are extracted to identify the fault characteristics.
Research conclusions:(1) Vibration mode of the failed steady arm changes obviously and the horizontal acceleration increases dramatically. (2) The main frequency of the acceleration amplitude at the fault point moves forward, the corresponding peak decreases, and the phase angle continues to decrease. (3) The acceleration in horizontal direction of the fault point changes sharply, and the vibration response of the catenary is obviously abnormal, which will directly affect the normal operation of the train. (4) In practical engineering, this method can position and diagnose the fault of steady arm in time for the stable and reliable pantograph catenary current collection.

Key words： OCS steady arm fault characteristics vibration response

Received: 11 July 2022

PACS:

U225

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	TIAN Shengping

Cite this article:

TIAN Shengping. Research on the Influence of Steady Arm Fault on Vibration Response of OCS[J]. Journal of Railway Engineering Society, 2022, 39(10): 71-76.

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https://tdgcxb.crec.cn/EN/ OR https://tdgcxb.crec.cn/EN/Y2022/V39/I10/71

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