Sistema de suministro de potencia de cables coaxiales para suministrar potencia a locomotoras eléctricas (LC) de un ferrocarril electrificado que comprende unas subestaciones de tracción principales (SS), cables coaxiales, transformadores de tracción (TT), catenaria (T), raíles (R) y disyuntores (G, K, W), en el que se suministra potencia a las locomotoras eléctricas (LC) entre la catenaria (T) y el raíl (R); comprendiendo el cable coaxial un conductor interior (IC), un aislante interior, un conductor exterior (OC) y un aislante exterior, y el esquema de conexión del transformador de tracción es un cableado monofásico, en el que: la subestación de tracción principal (SS) está conectada al cable coaxial que es paralelo a la catenaria (T); el lado primario del transformador de tracción (TTi) está conectado en paralelo entre el conductor interior (IC) y el conductor exterior (OC) del cable coaxial, mientras que el lado secundario del transformador de tracción (TTi) está conectado en paralelo entre la catenaria (T) y el raíl (R), siendo el terminal del transformador de tracción (TTi) conectado al conductor interior (IC) del cable coaxial y el terminal del transformador de tracción (TTi) conectado a la catenaria terminales de puntos; los transformadores de tracción (TT) distribuidos a lo largo de los cables coaxiales y la catenaria (T) con una distancia apropiada.
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.
Sistema de suministro de potencia de cables coaxiales para ferrocarril eléctrico
2020-11-25
Patent
Electronic Resource
Spanish
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