Automatic neutral-section passing device for electric locomotive

Abstract

The invention relates to an automatic neutral-section passing device for an electric locomotive, which comprises a detection and recognition system, a control system and an executing system connected with a contact network through a wire, wherein the detection and recognition system comprises two pairs of wheel sensors symmetrically arranged in a front and a rear set distances from the neutral region of a railway line and one pair of wheel sensors arranged in the midpoint of the neutral region; each pair of wheel sensors are respectively positioned at two sides of the rail, the output of each wheel sensor is connected with the control system, and each wheel sensor is provided with two contacts; and one detection region is arranged between the front pair of wheel sensors and the midpoint of the neutral region, and the other one detection region is arranged between the rear pair of wheel sensors and the midpoint of the neutral region. By adopting the wheel sensors with double contacts, the movement direction of the electric locomotive can be rapidly judged; and standby wheel sensors are provided, which provides the reliability of the whole automatic neutral-section passing device.

Description

technical field [0001] The invention relates to an automatic phase separation device for a two-way running electric locomotive. Background technique [0002] At present, the traction power supply of electrified railways in my country adopts single-phase power frequency AC system. When the electric locomotive is running, it obtains single-phase AC power from the power grid erected next to the railway to provide power. There are different phase sequences in the power supply arms of the traction network. A certain distance, such as about 20-30 kilometers, set a phase-splitting neutral zone. When the catenary on both sides is powered by different phases, the neutral zone should ensure that the train passes safely without short-circuit accidents. Therefore, when the electric locomotive passes the phase-splitting point, the main circuit breaker must be disconnected to avoid excessive phase-splitting. The shock caused by the sudden change of the power supply phase. The operation p...

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Problems solved by technology

[0004] The disadvantage of the above scheme is that since the wheel sensors of the detection and recognition system cannot directly detect the direction information of the locomotive, and there is a certain distance between the wheel sensors, it will take a long time to judge the direction of the locomotive if the information of the wheel sensors is integrated, and it cannot be carried out. Immediate direction judgment; and because the system is very dependent on the detection information of the wheel sensor, once the wheel sensor fails, the control system cannot correctly judge and perform effective control

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