Device and method for ensuring power supply of air compressor for SS9 locomotive

Abstract

The invention relates to the technical field of power supply for air compressors in locomotives, and discloses a device and method for ensuring power supply of air compressors for SS9 locomotives. The device includes a first air compressor, a second air compressor, a first main circuit, a split camera power supply system and a train power supply system, and also includes a second main circuit and a switching control device, and the second main circuit is connected to the train The power supply system and the first air compressor and the second air compressor, a third contactor is provided between the first air compressor and the train power supply system, and a third contactor is provided between the second air compressor and the train power supply system The fourth contactor, the switching control device is connected to the first contactor, the second contactor, the third contactor and the fourth contactor. The invention can switch the power supply for the locomotive air compressor, avoid the situation that the locomotive air pipeline system cannot work as much as possible, and at the same time maintain the normal operation of the power supply system of the SS9 locomotive without affecting the ride comfort of passengers.

Description

technical field [0001] The invention relates to the technical field of power supply for an air compressor in a locomotive, and more specifically relates to a device and method for ensuring power supply of an air compressor for an SS9 locomotive. Background technique [0002] At present, the power supply of the air compressor and other auxiliary units of the SS9 locomotive is 3AC380V, which is designed according to the split camera single-three-phase power supply system, and is driven by a three-phase asynchronous motor. Currently, two split cameras (1MG, 2MG) are installed on the locomotive. . The single-phase power input by the split camera comes from the b6-c6-x6 winding of the main transformer of the locomotive. The rated voltage of b6-x6 is 389V. After being processed by the split camera, it becomes a three-phase power supply, which is output to all on the locomotive through 201, 202 and 203. Auxiliary units such as figure 1 shown. [0003] The three-phase loads in th...

AI Technical Summary

Problems solved by technology

[0005] Although the SS9 locomotive itself is equipped with two split cameras for mutual redundancy, due to the harsh operating environment, the split camera may have failures such as abnormal sound of bearings, overheating, and burning of the starting resistor. The auxiliary units cannot work, the pantograph cannot be raised, the main circuit breaker cannot be closed, and we can only wait for rescue

The rescue time is as short as one or two hours, and as long as four or five hours. During this period, the train power supply system of the SS9 locomotive cannot provide power supply for the passenger car, which in turn makes the passenger car ventilator, air conditioner and other equipment unable to operate. The current passenger car compartments are fully sealed, which greatly affects the comfort of passengers

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