Study on dynamic behaviors of catenary overlap section under the impact of dropper failure

Study on dynamic behaviors of catenary overlap section under the impact of dropper failure

Blog Article

Overlaps serve vital components of the overhead contact system (OCS) on high-speed railways, and their dynamic behaviors directly affect the current-collecting performance of the pantograph-catenary systems in the high-speed operational conditions of trains.Instances of dropper breakage and other failures have been prevalent in overlap sections along high-speed railways, directly threatening the operational stability of the pantograph-catenary systems.Studying the dynamic behaviors of overlap sections under the influence of dropper failures holds important significance in guaranteeing the current-collecting performance of the pantograph-catenary systems.This study focused ucsb gaucho blue on the overlap sections within the catenary system of a high-speed railway.Based on a three-dimensional overlap model created using the finite element method, a pantograph-catenary coupling model incorporating the overlap sections was established.

This model was utilized to analyze the influence of various operating speeds on the pantograph-catenary coupling contact force, and to delve into the dynamic behaviors of the overlap sections under the influence whelen arges spotlight of dropper failures.The results from simulation calculations indicate the efficacy of the established model in accurately representing the dynamic behaviors.Dropper failures at the overlaps significantly degrade the current-collecting performance and the dynamic behaviors of neighboring droppers, elevating the risk of dropper breakage.Therefore, assessing the condition of droppers at overlaps is necessitated during the OCS patrol inspections.