Power supply system for railway traffic control devices.

摘要

1. The power supply system for railway traffic control devices consists of the basic and emergency power supply. The basic power supply is provided by a medium voltage three-phase power line for non-traction purposes. The line is powered from neighbouring traction substations that are powered from the power supply lines. The non-traction power supply line provides power - through transformer stations and low-voltage three-phase power lines - to power-supply and switching cubicles with automatic linear blockade devices. The cubicles are located along the section of the railway line between railway traffic management stations. Unique characteristics: Each power-supply and switching cubicle (6) contains a power-supply block (9) with a three-phase rectifier (13) at the input. The output of the rectifier is connected to a storage battery (14) and the direct-current input of the converter (15), which transforms direct current into alternating current. The three-phase output of the converter (15) is connected to the automatic linear blocking devices (10). The controlling input of each converter (15) is connected with a controlling line (16) to the synchronising generator (17), preferably located in one of the railway traffic management stations (5). The synchronising generator (17) is synchronized with the power supply grid (4).