CN109532571B - Three-phase power supply control system of electrified railway train - Google Patents
Three-phase power supply control system of electrified railway train Download PDFInfo
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- CN109532571B CN109532571B CN201910019448.0A CN201910019448A CN109532571B CN 109532571 B CN109532571 B CN 109532571B CN 201910019448 A CN201910019448 A CN 201910019448A CN 109532571 B CN109532571 B CN 109532571B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/30—Power rails
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Abstract
The invention discloses a three-phase power supply control system of an electrified railway train, and relates to the technical field of train power supply and operation control. The device comprises an AC-DC-AC variable-frequency transformer, a power supply rail, a running rail, a vehicle-mounted current collector, a vehicle-mounted three-phase driving motor and a vehicle-mounted rectifying and energy-storing device, wherein the AC-DC-AC variable-frequency transformer, the power supply rail and the running rail are arranged on the ground; the power supply rail is divided into a first power supply rail and a second power supply rail, and forms a three-phase alternating current power supply loop with the grounded running rail; the AC-DC-AC variable frequency transformer device supplies power to the train-mounted three-phase driving motor through the three-phase AC power supply loop and the current collector, and realizes three-phase driving and operation control of the train through frequency modulation and voltage regulation power supply of the ground AC-DC-AC variable frequency transformer device; the vehicle-mounted rectifying energy storage device supplies power to auxiliary electric equipment of the train. By changing the power supply mode of the system, the system structure is optimized, the axle weight is effectively reduced, the weight of the train is reduced, the load bearing efficiency of the train is improved, and meanwhile, the automatic control and unmanned operation of the train are realized in the most economical mode.
Description
Technical Field
The invention relates to the technical field of train power supply and operation control.
Background
The current trunk electrified railway train is powered by a power frequency single-phase alternating current power supply system, and electric equipment plays an important role on locomotives and motor cars of the train, wherein the most important is an alternating current-direct current-alternating current traction transmission system. The AC-DC-AC traction transmission system is formed by connecting a vehicle-mounted traction transformer, a traction converter and a traction motor in series, driving the traction motor and changing the rotation speed of the traction motor through frequency modulation and voltage regulation to achieve the purposes of train driving and speed regulation operation. Typically, in reality, train driving is performed by manual operation, and a few are automatic driving. There are some problems here. Firstly, an AC-DC-AC traction transmission system occupies absolute components in electric equipment on a trunk railway locomotive and a motor train, and has large weight and large volume; the weight is large, so that the axle weight is increased, the line cost is high, the large volume occupies more valuable space of the locomotive and the motor train, and the power density and the efficiency are reduced. Secondly, intelligent control and automatic driving (ATC) are necessary ways to replace manual driving, however, under the current train and power supply mode, the execution equipment required by driving is installed on the train, the train moves even moves at high speed, and the command and organization of automatic driving (ATC) originate from a ground control center, the two cannot be directly connected, wireless system connection is needed, and the wireless system failure or failure certainly causes a certain safety risk.
The technical problem to be solved at present is, on the one hand, to dispense with a vehicle-mounted traction transformer and a traction converter, to lighten the weight of vehicle-mounted electrical equipment, to reduce the axle weight, to realize the light weight of the train, to improve the bearing efficiency of the train, to improve the power density of the locomotive and the motor train, to adapt to higher-speed operation, and on the other hand, to directly realize the automatic control and unmanned operation of the train through ground power supply.
Disclosure of Invention
The invention aims to provide a three-phase power supply control system for an electrified railway train, which is capable of effectively reducing the axle weight, improving the bearing efficiency of the train, improving the power density of a locomotive and a motor train, adapting to higher-speed operation, and simultaneously directly realizing automatic control and unmanned operation of the train through ground power supply by changing the power supply mode of the system and optimizing the system structure.
The aim of the invention is realized by the following technical scheme: the three-phase power supply control system of the electrified railway train comprises an AC-DC-AC variable-frequency transformer device, a power supply rail, a running rail, a vehicle-mounted current collector, a vehicle-mounted three-phase driving motor and a vehicle-mounted rectifying and energy-storing device which are arranged on the ground; the AC-DC-AC variable frequency transformation device supplies power to the vehicle-mounted three-phase driving motor and the vehicle-mounted rectifying energy storage device through the power supply rail, the running rail and the vehicle-mounted current collector; the power supply rail is divided into a first power supply rail and a second power supply rail; the first power supply rail, the second power supply rail and the travelling rail form a three-phase alternating current power supply loop, and the power is supplied by an alternating current-direct current-alternating current variable-frequency transformer on the ground; the running rail is grounded; the vehicle-mounted current collector comprises a first current collector, a second current collector and a third current collector, the tail ends of the first current collector, the second current collector and the third current collector are respectively connected with three-phase terminals of the vehicle-mounted three-phase driving motor of the train, and the front ends of the third current collector are respectively in contact with the first power supply rail, the second power supply rail and the travelling rail for receiving power; the AC-DC-AC variable frequency and voltage device supplies power to the vehicle-mounted three-phase driving motor of the train through a first power supply rail, a first current collector, a second power supply rail, a second current collector, a running rail and a third current collector, and controls the start, stop and operation of the train by controlling the frequency modulation and the voltage regulation of the AC-DC-AC variable frequency and voltage device; and an alternating current terminal of the vehicle-mounted rectifying energy storage device is connected with the vehicle-mounted three-phase driving motor, and a direct current terminal of the vehicle-mounted rectifying energy storage device is connected with the auxiliary electric equipment.
Preferably, the running rails are divided into a first running rail and a second running rail connected in parallel with the first running rail. The first power supply rail and the second power supply rail are paved on a sleeper or a track bed between the first running rail and the second running rail, and the first power supply rail and the second power supply rail are connected in parallel through a wire; the first power supply rail and the second power supply rail are divided into a plurality of sections, and each section is powered by an independent AC-DC-AC variable-frequency transformer.
Preferably, the vehicle-mounted three-phase driving motor of the train is a synchronous motor or an asynchronous motor.
Preferably, the auxiliary electric equipment of the train mainly comprises a train air conditioner, illumination and the like; the auxiliary electric equipment and the vehicle-mounted rectifying energy storage device adopt the same voltage level.
Further preferably, the vehicle-mounted current collectors are arranged at the end of the bogie of the train and are insulated from the bogie of the train, and the first current collector, the second current collector and the third current collector of the vehicle-mounted current collectors are mutually insulated
Compared with the prior art, the invention has the beneficial effects that:
1. the two power supply rails and the running rail (which can be grounded) form a three-phase alternating current power supply loop, the ground alternating current-direct current-alternating current variable frequency transformation device supplies power to a three-phase driving motor of the train through the three-phase alternating current power supply loop, optimization of a system power supply structure and a power supply mode is achieved, a vehicle-mounted traction transformer and a traction converter are omitted, the axle weight is effectively reduced, the weight of the train is reduced, the power density of the locomotive and the motor train is improved, and the load bearing efficiency of the train is improved.
2. The ground AC-DC-AC variable frequency transformer supplies power to the three-phase driving motor of the train through the three-phase AC power supply loop, and the automatic control of train driving and running is directly carried out through frequency modulation and voltage regulation, so that unmanned driving is realized, and intelligent control and running are realized.
3. The power supply rail has low manufacturing cost and good economic performance.
4. The ground AC-DC-AC variable frequency transformer device does not generate negative sequence current in the power grid, and ensures the quality of electric energy.
5. Advanced technology, excellent performance and easy implementation.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a second embodiment of the present invention.
Description of the embodiments
For better understanding of the inventive concept, the working principle of the present invention will be briefly described as follows: compared with the existing AC-DC locomotive and motor train, the vehicle-mounted electric equipment such as a vehicle-mounted traction transformer, a traction converter and the like can be omitted, the axle weight of the train is effectively reduced, the power density and the bearing efficiency are improved, the optimization of a system power supply structure and a power supply mode is realized, the three-phase driving and operation control of the train are directly realized through the frequency modulation and the voltage regulation power supply of the three-phase AC power supply loop on the ground, the unmanned is realized, and the power supply of the auxiliary electric equipment of the train is realized through the vehicle-mounted rectifying and energy storage device. The invention is further described below with reference to the drawings and detailed description.
Example 1
As shown in fig. 1, the embodiment of the invention provides a three-phase power supply control system of an electrified railway train, which comprises an ac-dc-ac variable-frequency transformer 3, a power supply rail 1, a running rail R, a vehicle-mounted current collector 2, a vehicle-mounted three-phase driving motor 5 and a vehicle-mounted rectifying and energy-storing device 6 which are arranged on the ground; the AC-DC-AC variable frequency transformation device 3 supplies power to the vehicle-mounted three-phase driving motor 5 and the vehicle-mounted rectifying energy storage device 6 through the power supply rail 1, the walking rail R and the vehicle-mounted current collector 2; the power supply rail 1 is divided into a first power supply rail 1a and a second power supply rail 1b; the first power supply rail 1a, the second power supply rail 1b and the running rail R form a three-phase alternating current power supply loop, and the power is supplied by an alternating current-direct current-alternating current variable-frequency transformer 3 on the ground; the running rail R is grounded; the vehicle-mounted current collector 2 comprises a first current collector 2a, a second current collector 2b and a third current collector 2c, the tail ends of the first current collector 2a, the second current collector 2b and the third current collector 2c are respectively connected with three-phase terminals of a vehicle-mounted three-phase driving motor 5 of the train 4, and the front ends of the first current collector are respectively in contact with and powered by the first power supply rail 1a, the second power supply rail 1b and the running rail R; the ac-dc-ac variable frequency transformation device 3 supplies power to the vehicle-mounted three-phase driving motor 5 of the train 4 through the first power supply rail 1a, the first current collector 2a, the second power supply rail 1b, the second current collector 2b, the running rail R and the third current collector 2c, and controls the start-stop and operation of the train 4 by controlling the frequency modulation and the voltage regulation of the ac-dc-ac variable frequency transformation device 3; the ac terminal of the vehicle-mounted rectifying and energy-storing device 6 is connected with the vehicle-mounted three-phase driving motor 5, and the dc terminal thereof is connected with the auxiliary electric equipment (not shown in the figure, the same applies below).
The running rail R is divided into a first running rail R1 and a second running rail R2 connected with the first running rail R1 in parallel. The first power supply rail 1a and the second power supply rail 1b are paved on a sleeper or a track bed between the first running rail R1 and the second running rail R2.
In the embodiment of the present invention, the vehicle-mounted three-phase driving motor 5 of the train 4 is a synchronous motor or an asynchronous motor.
The auxiliary electric equipment of the train 4 mainly comprises a train air conditioner, illumination and the like; the auxiliary electric equipment and the vehicle-mounted rectifying energy storage device 6 adopt the same voltage level.
The vehicle-mounted current collectors 2 are all installed at the bogie end of the train 4 and are insulated from the bogie of the train 4, and the first current collector 2a, the second current collector 2b and the third current collector 2c of the vehicle-mounted current collectors 2 are mutually insulated.
The AC-DC-AC variable frequency transformer is powered by a three-phase cable of the substation.
Example two
As shown in fig. 2, the embodiment of the invention provides a three-phase power supply control system of an electrified railway train, which comprises an ac-dc-ac variable-frequency transformer 3, a power supply rail 1, a running rail R, a vehicle-mounted current collector 2, a vehicle-mounted three-phase driving motor 5 and a vehicle-mounted rectifying and energy-storing device 6 which are arranged on the ground; the AC-DC-AC variable frequency transformation device 3 supplies power to the vehicle-mounted three-phase driving motor 5 and the vehicle-mounted rectifying energy storage device 6 through the power supply rail 1, the walking rail R and the vehicle-mounted current collector 2; the power supply rail 1 is divided into a first power supply rail 1a and a second power supply rail 1b; the first power supply rail 1a, the second power supply rail 1b and the running rail R form a three-phase alternating current power supply loop, and the power is supplied by an alternating current-direct current-alternating current variable-frequency transformer 3 on the ground; the running rail R is grounded; the vehicle-mounted current collector 2 comprises a first current collector 2a, a second current collector 2b and a third current collector 2c, the tail ends of the first current collector 2a, the second current collector 2b and the third current collector 2c are respectively connected with three-phase terminals of a vehicle-mounted three-phase driving motor 5 of the train 4, and the front ends of the first current collector are respectively in contact with and powered by the first power supply rail 1a, the second power supply rail 1b and the running rail R; the AC-DC-AC variable frequency transformation device 3 supplies power to the train 4 vehicle-mounted three-phase driving motor 5 through a first power supply rail 1a, a first current collector 2a, a second power supply rail 1b, a second current collector 2b, a running rail R and a third current collector 2c, and controls the start, stop and operation of the train 4 by controlling the frequency modulation and the voltage regulation of the AC-DC-AC variable frequency transformation device 3; the alternating current terminal of the vehicle-mounted rectifying and energy-storing device 6 is connected with the vehicle-mounted three-phase driving motor 5, and the direct current terminal of the vehicle-mounted rectifying and energy-storing device is connected with the auxiliary electric equipment.
The running rail R is divided into a first running rail R1 and a second running rail R2 connected with the first running rail R1 in parallel. The first power supply rail 1a and the second power supply rail 1b are paved on a sleeper or a track bed between the first running rail R1 and the second running rail R2.
In the embodiment of the present invention, the vehicle-mounted three-phase driving motor 5 of the train 4 is a synchronous motor or an asynchronous motor.
The auxiliary electric equipment of the train 4 mainly comprises a train air conditioner, illumination and the like; the auxiliary electric equipment and the vehicle-mounted rectifying energy storage device 6 adopt the same voltage level.
The vehicle-mounted current collectors 2 are all installed at the bogie end of the train 4 and are insulated from the bogie of the train 4, and the first current collector 2a, the second current collector 2b and the third current collector 2c of the vehicle-mounted current collectors 2 are mutually insulated.
The AC-DC-AC variable frequency transformer is powered by a three-phase cable of the substation.
The main difference between the embodiment of the present invention and the first embodiment is that: the first power supply rail 1a and the second power supply rail 1b are divided into a plurality of sections, and each section is powered by an independent AC-DC-AC variable-frequency transformer device 3 so as to realize the section control of the operation of the train 4. In the specific embodiment of the invention, two adjacent sections are recorded as a section i and a section i+1 (i is more than or equal to 1), and each section is powered by an independent AC-DC-AC variable-frequency transformer 3, so that the train 4 can be controlled in a sectional manner. In order to ensure the safety and controllability of the train, each section is generally limited to only one train passing.
In summary, the invention optimizes the system structure by changing the power supply mode of the system, effectively reduces the weight of the vehicle-mounted equipment, effectively reduces the axle weight, realizes the light weight of the train, improves the bearing efficiency of the train, improves the power density of the locomotive and the motor train, is suitable for higher-speed operation, and simultaneously directly realizes the automatic control and unmanned operation of the train through ground power supply.
Claims (5)
1. A three-phase power supply control system of an electrified railway train comprises a running rail (R) along the electrified railway, a power supply rail (1) paved in parallel with the running rail (R), an AC-DC-AC variable-frequency transformer device (3) arranged on the ground, a vehicle-mounted current collector (2), a vehicle-mounted three-phase driving motor (5) and a vehicle-mounted rectifying and energy-storing device (6) arranged on the train (4); the method is characterized in that: the power supply rail (1) comprises a first power supply rail (1 a) and a second power supply rail (1 b); the first power supply rail (1 a), the second power supply rail (1 b) and the running rail (R) form a three-phase alternating current power supply loop, and the alternating current-direct current-alternating current variable-frequency transformer device (3) supplies power; the running rail (R) is grounded; the vehicle-mounted current collector (2) comprises a first current collector (2 a), a second current collector (2 b) and a third current collector (2 c), the tail ends of the first current collector, the second current collector and the third current collector are respectively connected with three-phase terminals of a vehicle-mounted three-phase driving motor (5) of the train (4) through cables, and the front ends of the third current collector, the second current collector and the third current collector are respectively in contact with the first power supply rail (1 a), the second power supply rail (1 b) and the running rail (R) for receiving power; the AC-DC-AC variable frequency and voltage device (3) supplies power to a vehicle-mounted three-phase driving motor (5) of the train (4) through the first power supply rail (1 a) and the first current collector (2 a), the second power supply rail (1 b) and the second current collector (2 b), the running rail (R) and the third current collector (2 c), and controls the start-stop and the running of the train (4) by controlling the frequency modulation and the voltage regulation of the AC-DC-AC variable frequency and voltage device (3); the alternating current terminal of the vehicle-mounted rectifying energy storage device (6) is connected with the vehicle-mounted three-phase driving motor (5), and the direct current terminal of the vehicle-mounted rectifying energy storage device is connected with auxiliary electric equipment.
2. The electrified railway train three-phase power supply control system of claim 1, wherein: the running rails (R) comprise a first running rail (R1) and a second running rail (R2) which is connected in parallel with the first running rail (R1).
3. An electrified railway train three-phase power supply control system according to claim 1 or 2, wherein: the first power supply rail (1 a) and the second power supply rail (1 b) are paved on a sleeper or a track bed between the first running rail (R1) and the second running rail (R2); the first power supply rail (1 a) and the second power supply rail (1 b) are provided with sections according to train operation intervals, and each section is powered by an independent AC-DC-AC variable-frequency transformer (3).
4. The electrified railway train three-phase power supply control system of claim 1, wherein: the vehicle-mounted three-phase driving motor (5) of the train (4) is a synchronous motor or an asynchronous motor.
5. The electrified railway train three-phase power supply control system of claim 1, wherein: the vehicle-mounted current collectors (2) are arranged at the end heads of the bogie of the train (4) and are insulated from the bogie of the train (4), and the first current collector (2 a), the second current collector (2 b) and the third current collector (2 c) of the vehicle-mounted current collectors (2) are mutually insulated.
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| CN201910019448.0A CN109532571B (en) | 2019-01-09 | 2019-01-09 | Three-phase power supply control system of electrified railway train |
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| CN201910019448.0A CN109532571B (en) | 2019-01-09 | 2019-01-09 | Three-phase power supply control system of electrified railway train |
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| CN109532571B true CN109532571B (en) | 2023-05-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110015214B (en) * | 2019-04-18 | 2023-09-22 | 成都尚华电气有限公司 | Double-power-receiving-boot electric train continuous power-off over-segmentation control system and method thereof |
| CN109987003B (en) * | 2019-04-18 | 2024-02-06 | 成都尚华电气有限公司 | Power train sectioning control system and method thereof |
| CN110001457B (en) * | 2019-04-18 | 2024-02-06 | 成都尚华电气有限公司 | Power train uninterrupted power section control system and method thereof |
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| GB190224742A (en) * | 1902-11-11 | 1903-05-07 | Willis Nelson Stewart | Improvements in or connected with Electric Railways on a Mixed Battery and Conductor System. |
| WO2018006516A1 (en) * | 2016-07-07 | 2018-01-11 | 中车大连机车车辆有限公司 | Ac-dc-ac circuit grounding protection method, diesel generator set and locomotive |
| WO2018006517A1 (en) * | 2016-07-07 | 2018-01-11 | 中车大连机车车辆有限公司 | Method for detecting instantaneous current in intermediate dc link of ac-dc-ac circuit and locomotive |
| CN107839547A (en) * | 2017-11-28 | 2018-03-27 | 成吉安 | A kind of rail traction power set of urban track traffic four |
| CN209381844U (en) * | 2019-01-09 | 2019-09-13 | 西南交通大学 | A kind of electric railway train three phase supply construction |
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- 2019-01-09 CN CN201910019448.0A patent/CN109532571B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB190224742A (en) * | 1902-11-11 | 1903-05-07 | Willis Nelson Stewart | Improvements in or connected with Electric Railways on a Mixed Battery and Conductor System. |
| WO2018006516A1 (en) * | 2016-07-07 | 2018-01-11 | 中车大连机车车辆有限公司 | Ac-dc-ac circuit grounding protection method, diesel generator set and locomotive |
| WO2018006517A1 (en) * | 2016-07-07 | 2018-01-11 | 中车大连机车车辆有限公司 | Method for detecting instantaneous current in intermediate dc link of ac-dc-ac circuit and locomotive |
| CN107839547A (en) * | 2017-11-28 | 2018-03-27 | 成吉安 | A kind of rail traction power set of urban track traffic four |
| CN209381844U (en) * | 2019-01-09 | 2019-09-13 | 西南交通大学 | A kind of electric railway train three phase supply construction |
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