研究目的:为扩大既有线路旅客运输能力,需进行既有线提速改造。第六次大提速最高动车组联挂双弓 运行高达250 km/h,因此必须研究适应于既有线提速改造工程的接触网改造技术,为在第六次大提速中的大 面积技术推广和实施提供科学技术保证。
研究结论:根据动车组实车双弓试验结果得出,JY 250和JY250C均能达到EN50367的相关系统性能要 求。既有线提速250 km/h改造的接触网系统JY250的研发,在很大程度上可以优化设计方案,降低工程投 资,可指导提速后的既有接触网类型能否适应速度需要的工程实际研究,社会经济效益巨大。
Research purposes: It is necessary to upgrade the existing railway for enhancing the passenger transportation capability of the existing railway. After the sixth-round speed-up , the speed of the double-sets coupled EMUS with double working pantographs is up to 250 km/h,so it needs to do researches on the technology for upgrading overhead contact line for the purpose of making the sixth-round speed-up going smoothly.
Research Conclusions: The tested results of EMUS with double pantograph show both of overhead contact line system JY250 and JY 250C can meet the relative requirements. The design can be optimized in big sense with usage of JY250 System, which can reduce the construction cost, provide the reference to similar works in future and bring large social benefits.