Contact rail traction system of urban rail transit

Abstract

The invention discloses a contact rail traction system of urban rail transit and belongs to the technical field of urban rail transit. Arresters are arranged and connected with a contact rail and a steel rail respectively to form system comprehensive lightning protection; a contact rail on the ground surface section is provided with a novel UPVC (unplasticized polyvinyl chloride) protective cover, the contact rail system is further provided with a contact rail electrified display device, an emergency power shutoff press-button control system, a trolley conductor conductive device and a visualized grounding device; the arresters are arranged every 300 meters on a track line of elevated sections, demands of all related system devices are comprehensively taken into consideration in characteristics of the arresters; arrestors are arranged on the busbar of cathode cabinets of a corresponding traction substation in order to prevent lightning waves from leading to the cathode cabinets of the traction substation through a return cable and further damages to electrical equipment can be avoided. The contract rail traction system of the urban rail transit improves reliability of the traction power supply system of the urban rail transit and reduces failure rate and maintenance costs.

Description

technical field [0001] The invention relates to the technical field of urban rail transit, in particular to an urban rail transit contact rail traction system. Background technique [0002] At present, the vast majority of urban rail transit adopts overhead catenary (flexible) traction system. The defects of this system, such as high failure rate, high maintenance cost and affecting urban landscape, have been increasingly questioned. However, the traditional and mature DC750V contact rail traction system has low voltage level, high energy consumption, small power supply radius, large number of substations, and large investment. [0003] Current prior art mainly has following defective: [0004] 1. Defects such as complex system structure, low reliability, high failure rate, high maintenance cost, low typhoon resistance, and impact on urban landscape have been increasingly questioned by the industry. [0005] 2. The traditional low-quality carbon steel conductor rail materi...

AI Technical Summary

Problems solved by technology

[0004] 1. Defects such as complex system structure, low reliability, high failure rate, high maintenance cost, low typhoon resistance, and impact on urban landscape have been increasingly questioned by the industry

[0005] 2. The traditional low-quality carbon steel conductor rail material has low conductivity; the voltage is 750V, the voltage level is low, the energy consumption is high, the power supply radius is small, there are many substations, and the investment is large

Images