Fill the blank!The country's first dual -streaming city rail trains are put into operation

A few days ago, the nation's first dual -streaming city rail trains were officially put into operation in the Chongqing Jiangjiao Line. The train was independently developed by CRRC Changchun Rail Bus Co., Ltd. and used the domestic first -rate automatic switching technology to realize the "one vehicle direct" and "zero transfer" of the suburbs and urban areas, providing a more convenient travel solution for Chongqing citizens. At the same time, the construction of Chengdu -Chongqing Shuangcheng Economic Circle.

At present, my country's rail transit power supply system is usually divided into 25 kV and 1.5 kV of DC. Among them, 25 kV power supply distance is long, suitable for trunk railway, intercity railway, and urban (suburban) railway; DC 1.5 kV power supply distance is close to urban subways and unit rails. Due to the differences between the power supply system and the vehicle limit, the subway, monorail trains and the city (suburban) railway trains are divided into two rail networks with different technical characteristics, which are usually not operated across the line.

However, the dual -streaming city trains can run on the two types of power supply lines of 25 kV and DC 1.5 kV, and complete dozens of switching actions in 1 minute to achieve the interconnection of the two system lines, and then realize the suburbs of the suburbs of the city. The penetration operations of railway and urban rail transit fill the gap in domestic rail transit technology.

After 10 years of research, CRRC has continuously achieved breakthroughs in the integrated technology integration technology of the dual -current rail vehicle system, and has successively completed vehicle development, test verification, technical platform construction and compilation of general technology standards.

The investment operations of dual -streaming trains will further solve the problem that the internal subway lines of the city cannot extend, and the out suburbs of railway busization operations cannot be extended internally, make up for the defects of the existing line single system, and explore new paths for the diversified development of rail transit in my country.

(Ren Shuang, Zhang Guosheng, all media reporters of Guangming Daily, Leejob reporter Li Lan)

Source: Ren Shuang, Zhang Guosheng, all media reporters from Guangming Daily, and Lei Li Lami, a trainee reporter,

Responsible editor: Wang Zimo

Edit: Chang Ying Zhang Yongqun Fan Tianpei

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