A coaxial cable power supply system for electrified railway consists of main traction substations, coaxial cables, traction transformers, catenary, rails and circuit breakers. The main traction substation is connected to the coaxial cable which is erected in parallel with the catenary. The connection scheme of the traction transformer is single-phase wiring. The traction transformers are distributed along the coaxial cables and the catenary with a proper distance. The primary side of the traction transformer is connected in parallel between the inner conductor and the outer conductor of the coaxial cable, while the secondary side of the traction transformer is connected in parallel between the catenary and the rail. The two adjacent traction transformers connect the inner conductor of the coaxial cable to the catenary in parallel and connect the outer conductor of the coaxial cable to the rail in parallel. In this invention, the power supply capability and the voltage level are decided mainly by the coaxial cable. Therefore, the voltage level of the coaxial cable can be decided by that of the catenary and this leads to lightweight suspension and overall quality improvements of catenary. The coaxial cable can be set up along the railway or metro tunnel easily, unlike the overhead line which requires additional corridor occupancy. The use of the coaxial cable can also reduce the interfaces between railway and utility grid, save the external power supply investment and thus the system is easy to be managed.
ELECTRIC RAILWAY COAXIAL CABLE POWER SUPPLY SYSTEM
STROMVERSORGUNGSSYSTEM ÜBER KOAXIALKABEL FÜR ELEKTRISCHE EISENBAHN
SYSTÈME D'ALIMENTATION ÉLECTRIQUE PAR CÂBLE COAXIAL DE CHEMIN DE FER ÉLECTRIQUE
2020-05-20
Patent
Elektronische Ressource
Englisch
Engineering Index Backfile | 1895
Engineering Index Backfile | 1897
|Engineering Index Backfile | 1895
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