Electrical locomotive auto-passing neutral section control system and method

Abstract

The invention discloses an electrical locomotive auto-passing neutral section control system. In the control system, a signal generator used for transmitting passing neutral section anticipating signal is arranged on a vehicle mainframe of an electrical locomotive, wherein the vehicle mainframe comprises a signal receiver used for receiving the passing neutral section anticipating signal, a memory unit used for storing the required time of locomotive neutral section operation, a clock, a speed sensor used for providing the current speed of the electrical locomotive for a controller, the controller used for outputting passing neutral section control signal and restoring the control signal and a contact network connection controller used for controlling a contact network electrical connection device. The timing that the invention executes the auto-passing neutral section operation is accurate and the reliability of the auto-passing neutral section control is high.

Description

technical field [0001] The invention relates to the field of phase separation control of electric locomotives, in particular to an automatic phase separation control system and method for electric locomotives including single-traction locomotives and double-connected locomotives. Background technique [0002] In the electrified traction section, the traction power supply network adopts the single-phase power frequency AC power supply mode. In order to make the three-phase balance of the power system and improve the utilization rate of the power grid, the power supply network of the electrified railway adopts segmental commutation power supply. In order to prevent short circuit between phases, adjacent phases are separated by air or insulators, which is called "electric phase separation". Every 20km to 25km on the domestic contact network, there is a power supply dead zone about 30m long, which is called "phase separation zone". Currently, the following manual over-phase co...

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Problems solved by technology

But there are two disadvantages in such control: on the one hand, it increases the labor intensity of the driver, and a little negligence may cause the burning of the catenary, which is more likely to occur on the newly opened electrified line because the driver is not familiar with the operation; on the other hand , due to the operation by human experience, the power-off time is relatively long, which also affects the driving speed

[0004] 1. The ground switch automatic switching scheme represented by Japan, the main disadvantage of this scheme is that the current impact when closing the switch after passing the phase zone is relatively large, and the investment is huge. To build a division, a batch of management and operation and maintenance are required Personnel, it is not suitable for use in our country with a vast territory;

[0005] 2. The pole-mounted switch automatic power-off scheme represented by Swiss AF Company, the main disadvantage of this scheme is that the vacuum switch is broken with load, which requires frequent maintenance, and it is difficult to achieve 100% backup for pole-mounted installation;

[0006] 3. The on-board automatic control power-off scheme represented by France, Germany, the United Kingdom and Spain has relatively low investment, and the main circuit breaker only breaks the small current of the auxiliary machine, thus affecting the electrical life of the main circuit breaker It is not big, and has many advantages such as being suitable for low-speed, high-speed, quasi-high-speed and high-speed trains, as well as multi-bow trains, but there are also some problems: there is a period of time when the locomotive is powered off, and if the time of breaking the circuit breaker is not appropriate, It will cause a large locomotive speed loss; if the current control is not good, it will produce electric shock and train impulse; using ground induction magnets as phase point identification, it is easy to cause leakage and arcing due to ground magnet loss or failure. Accident; since the installation of the ground magnet needs to be constructed on the roadbed, there are many involved parts, the construction is difficult, and the investment is relatively large

Due to the rainy and snowy season, pulse sensor, TAX box and other link factors, the error of the locomotive position calculated by the monitoring device is relatively large, resulting in inaccurate judgment of the timing of the automatic over-phase operation of the locomotive, and the reliability of the automatic over-phase control is not high

[0008] Moreover, the above-mentioned existing over-phase control system and its method are only applicable to single-traction locomotives. There are also existing over-phase control schemes for double-connected locomotives, but there are also inaccurate judgments on the timing of automatic over-phase operations for locomotives, and automatic over-phase Issues such as low reliability of phase control

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