随着电气化区段列车提速,影响弓网关系和受流质量的主要技术指标都有很大的变化,因此必须对提速区段接触网进行技术改造,如增加接触网张力,改善运行稳定性;改变定位结构型式,防止定位装置打碰受电弓,改善接触网弹性;采用双五跨绝缘关节八路关节式分相绝缘装置,以减少接触网集中荷载设备,优化弓网关系.同时强化接触网关键设备运行管理和检查.“,”With the increase of the train’s speed in the electrified section, the main technological indexes have varied greatly which influence relations between pantograph and catonary and quality of power feed, so the catenary has to be reformed technologically in speed - increasing section, such as increasing the catonary’ s tension, improveing elasticity of catenary using double five - span isolation joint, eight - span joint split- phase isolation device to optimize relations between catenary and pantograph. Besides, management and inspect work should be strengthened on the key devices of catonary.