Comprehensive operation system for railway operation train set in alpine region

Abstract

The invention discloses a comprehensive operation system for a railway operation train set in an alpine region. The comprehensive operation system for the railway operation train set in the alpine region includes a power supply unit, the power supply unit includes a pantograph and a power control device, and the power control device includes a multiple peak clipping network and transient suppression unit, a rectification filtering clipping network, an ultra-large-scale soft-switching PWM pulse-width modulation circuit and an SPWM inverter circuit, single-phase AC850V is filtered by the multiple peak clipping network and transient suppression unit to remove high-frequency peaks and multiple harmonic sand then enters the rectification filtering clipping network to convert an alternating current power supply to a direct current power supply, and finally the direct current power supply is inverted to a three-phase AC380/220V alternating current power supply through the ultra-large-scale soft-switching PWM pulse-width modulation circuit and the SPWM inverter circuit. According to the comprehensive operation system for the railway operation train set in the alpine region, 27.5KV single-phase high voltage under a contact network is converted into a stable and high-quality three-phase four-wire AC380V, and a general-purpose diesel generator set currently used in mobile field operationtrain sets is replaced.

Description

technical field [0001] The invention belongs to the technical field of train operation devices for railway operations, and in particular relates to a comprehensive operation system for trains for railway operations in alpine regions. Background technique [0002] The public works mobile field operation vehicles all use diesel generators to supply power to air conditioners, computers, communication equipment, lighting, construction machinery and other equipment under field operation conditions. With the adjustment of the production layout of railway transportation, the construction of new lines and the maintenance of existing lines, the corresponding construction work will gradually increase with the completion of new lines. In order to ensure the order and safety of traffic, construction workers arrive After the construction point, it will work continuously for 24 hours. Especially for railway operations in cold and high-altitude areas, the quality of power supply directly ...

AI Technical Summary

Problems solved by technology

[0004] ① Reliability of power supply and waste of power supply: In the severe winter, it is difficult to start the diesel engine. In the production site, the power supply is often not met in time

According to the survey, the load rate of the generator capacity is 30%-50% on average, and 50%-70% of the generated electricity is wasted

[0005] ②Safety and labor transportation costs: The oil storage tanks of the railway operation vehicles on the outbound operation site have certain safety risks; the transfer transportation and oil transportation of the diesel generator production site are difficult and costly

[0006] ③Large noise at the work site and difficult maintenance and operation: the huge noise of the diesel engine at work seriously affects the rest of the rest personnel on duty, and the noise is harmful to the physical and mental health of the operation and maintenance personnel

[0007] ④Large pollution: a large amount of exhaust gas produced by diesel generators during power generation will cause huge pollution to the surrounding environment

[0008] ⑤Difficult maintenance and increased maintenance costs: Diesel power generation equipment is a combination of diesel engines and generators. In order to ensure safe operation, comprehensive maintenance forces for diesel engines and generators should be equipped on site

[0009] ⑥ High comprehensive operating cost of power generation: According to relevant reports, the comprehensive operating cost of diesel generators is more than 3-4 times that of the national grid power supply

It is also very inconvenient to carry oxygen cylinders during the construction process, and the construction efficiency is low

It is difficult to obtain local materials for oxygen supply during construction, which increases the cost of oxygen supply, and once oxygen cannot be supplied continuously, construction will be interrupted, and the work efficiency and personal safety of construction workers will be greatly threatened

[0011] Oxygen supply devices cannot be installed in the existing railway operating vehicles in alpine regions, because there is no stable power supply to supply power to the oxygen supply equipment. not functioning properly

On the other hand, high-efficiency oxygen-generating equipment suitable for operating vehicles in high-cold and high-altitude areas has not yet come out. The existing PSA and liquefied air oxygen-generating technologies cannot economically support the diffuse oxygen supply demand in space environments, and their high cost As a result, the real oxygen supply of existing diffuse oxygen supply projects is extremely low, so there is no physiological improvement effect

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