| By the end of 2019,China's high-speed railway mileage has reached 35,000 kilometers,ranking first in the world.As an important part of power supply and traction of high-speed railway,the catenary system works by providing electric energy for high-speed trains to transmit to locomotives to ensure the high-speed and stable operation of trains.Because of the uniqueness of its working characteristics,its safe and stable operation is related to the on-time rate of high-speed trains and the comfort of passengers.The stability of high-speed railway catenary system is restricted by many factors,such as construction technology,materials,external environment,operation and maintenance standards and other factors.Based on the operation of Chengdu-Chongqing high-speed railway and other railway lines,this paper discusses and studies the key technology of the overhead contact network system of high-speed railway according to the multiple fault cases,a large number of engineering practices and experience summary.This paper mainly studies the speed according to different level,the bifurcation of crossover line layout optimization,T bifurcation of the common faults and process optimization,the layout of free of alternating lines bifurcation,fracture analysis of the causes of droppers,and process improvement measures,the analysis of the catenary inspection system and the practical application of 6 c analysis technology,high speed of bow net system research and the guiding significance of the scene.Through the related key technologies of high speed railway catenary system engineering research,is helpful to optimize the design of the catenary project follow-up construction process,improve the construction methods and materials technology,reduce the cost of the project cost,improve the daily maintenance process,improve the quality of engineering and technology level,in order to further realize the high-speed railway catenary system stability,reliability engineering practice basis. |
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