WO2020020325A1 - Système d'alimentation électrique de transport sur rail - Google Patents

Système d'alimentation électrique de transport sur rail Download PDF

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Publication number
WO2020020325A1
WO2020020325A1 PCT/CN2019/097831 CN2019097831W WO2020020325A1 WO 2020020325 A1 WO2020020325 A1 WO 2020020325A1 CN 2019097831 W CN2019097831 W CN 2019097831W WO 2020020325 A1 WO2020020325 A1 WO 2020020325A1
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WO
WIPO (PCT)
Prior art keywords
power supply
charging
converter
supply system
power
Prior art date
Application number
PCT/CN2019/097831
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English (en)
Chinese (zh)
Inventor
陈奎宇
方长胜
易咏诗
蒋德鑫
Original Assignee
比亚迪股份有限公司
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Filing date
Publication date
Application filed by 比亚迪股份有限公司 filed Critical 比亚迪股份有限公司
Publication of WO2020020325A1 publication Critical patent/WO2020020325A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M3/00—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/02—Circuit arrangements for ac mains or ac distribution networks using a single network for simultaneous distribution of power at different frequencies; using a single network for simultaneous distribution of ac power and of dc power
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters

Definitions

  • the present application relates to the field of power supply technology, and in particular, to a rail transit power supply system.
  • an object of the present application is to propose a rail transit power supply system, which is relatively simple, complete in function, and highly reliable in power supply.
  • a rail transit power supply system proposed in this application includes: a substation and distribution module, the substation and distribution module includes a transformer, and a primary side of the transformer is connected to a mains power line of the city through a high-voltage bus.
  • the first secondary side of the transformer is connected to a first power supply bus, and the second secondary side of the transformer is connected to a second power supply bus, wherein the first power supply bus is connected to a low-voltage load of rail transit; a charging module,
  • the charging module includes a charging unit and a current receiver, one end of the charging unit is connected to the second power supply bus, and the other end of the charging unit is connected to the current receiver; wherein, the power distribution module Both the charging module and the charging module are provided at a charging station. When a rail vehicle is docked at the charging station, the current receiver is connected to a current collector of the rail vehicle so that the charging unit charges the rail vehicle.
  • the rail transit power supply system of the present application integrates the power distribution module and the charging unit to facilitate unified and coordinated management of the power supply of the rail transit low-voltage load and the charging module, while saving the station area and improving the reliability of the power supply. , And reduce the cost of power supply, thereby improving the economics of power supply.
  • FIG. 1 is a schematic structural diagram of a rail transit power supply system according to a first embodiment of the present application
  • FIG. 2 is a schematic structural diagram of a rail transit power supply system according to a second embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a charging module according to an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a rail transit power supply system according to a third embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a rail transit power supply system according to a fourth embodiment of the present application.
  • FIG. 1 is a schematic structural diagram of a rail transit power supply system according to an embodiment of the present application.
  • the power supply system includes a power distribution module 10 and a charging module 20.
  • the substation and distribution module 10 includes a transformer T.
  • the primary side of the transformer T is connected to the mains power line through the high-voltage bus L1.
  • the first secondary side of the transformer T is connected to the first power supply bus L2.
  • the secondary side is connected to the second power supply bus L3, wherein the first power supply bus L2 is connected to the low-voltage load of the rail transit;
  • the charging module 20 includes a charging unit 21 and a current receiver 22, and one end of the charging unit 21 is connected to the second power supply bus L3
  • the other end of the charging unit 21 is connected to the current receiver 22.
  • the power distribution module 10 and the charging module 20 are both installed at a charging station. When the rail vehicle is docked at the charging station, the current receiver 22 is connected to the rail vehicle's current taker so that the charging unit 21 charges the rail vehicle.
  • the low-voltage load of the rail transit may include a dynamic load, an air-conditioning load, and the like.
  • the dynamic lighting load may include, but is not limited to, lighting distribution cabinets, emergency power distribution cabinets, intelligent evacuation indication systems, electrical fire monitoring systems, lighting fixtures, sockets, and lighting switches.
  • the charging station is the stopping station of the rail vehicle.
  • the rail vehicle may be a tram, such as a Yunba, a cloud-rail train, and the like.
  • the power supply system can realize the power demand for low-voltage loads and rail vehicle charging through a transformer, which can save the area of the station, improve the reliability of power supply, and reduce the cost of power supply, thereby improving the economics of power supply.
  • the charging unit 21 and the power distribution module 10 may be integrated and disposed.
  • the charging unit 21 and the power distribution module 10 are taken as an organic whole.
  • the charging unit 21 and the power distribution module 10 can be unifiedly arranged in a cabinet, and the charging unit can be realized by an integrated controller. 21 and the control of the power distribution module 10. Therefore, it is convenient to perform unified and coordinated management on the power supply of the rail transit low-voltage load and the charging module.
  • 10 kV AC power is introduced from a mains power line, that is, after 10 kV AC power is input to the primary side of the transformer T, the first secondary side of the transformer T outputs 400 V AC power.
  • the second secondary side outputs 640V AC power.
  • 400V AC power supplies power to the low-voltage load of the rail transit (such as moving photo load) through the first power supply bus L2
  • 640V AC power supplies power to the charging module 20 through the second power supply bus L3.
  • the power distribution module 10 further includes a switch cabinet 11.
  • the switch cabinet 11 includes an incoming cabinet 111 and a feeder cabinet 112.
  • the incoming cabinet 111 is connected to the mains power line through the high-voltage bus L1
  • the feeder cabinet 112 is connected to the primary side of the transformer T through the high-voltage bus L1.
  • the switch cabinet 11 further includes a power outlet cabinet 113, which is connected to the power grid outlet of the city grid.
  • the power grid outlet can be used as the power grid incoming line of other power distribution modules.
  • the installation of the switch cabinet 11 can facilitate the introduction of the 10 kV medium voltage of the city grid into the power distribution module 10 and the power distribution module to be transmitted to the next station.
  • the charging unit 21 includes a first AC / DC converter 211, a charging circuit 212, and a controller 213.
  • the AC side of the first AC / DC converter 211 is connected to the second power supply bus L3; one end of the charging circuit 212 is connected to the DC side of the first AC / DC converter 211, and the other end of the charging circuit 212 is connected to the receiving side.
  • the converter 22 is connected; the controller 213 is respectively connected to the control ends of the first AC / DC converter 211 and the charging circuit 212, and the controller 213 is used to adjust the charging power of the first AC / DC converter 211 and control the charging circuit 212 is turned on and off.
  • the current receiver 22 is a charging tank and the current collector is a charging blade.
  • the charging tank is disposed along the extending direction of the running rail, and the charging blade is disposed on the bottom of the rail vehicle.
  • the length of the charging tank and the corresponding charging The blades are of equal length.
  • one or more charging modules 20 may be correspondingly provided at the charging station, that is, each pair of charging blades has a charging slot. Corresponding.
  • the charging tank includes a first tank body 221 and a second tank body 222.
  • the charging circuit 212 includes a positive contactor K1, a negative contactor K2, a precharge contactor K3, and a precharge resistor R.
  • One end of the positive contactor K1 is connected to the positive electrode of the DC side of the first AC / DC converter 211, and the other end of the positive contactor K1 is connected to the first tank 221.
  • One end of the negative contactor K2 is connected to the first AC /
  • the negative terminal of the DC side of the DC converter 211 is connected, the other end of the negative contactor K2 is connected to the second tank 222;
  • one end of the precharge contactor K3 is connected to the positive side of the DC side of the first AC / DC converter 211;
  • One end of the charging resistor R is connected to the other end of the pre-charge contactor K3, and the other end of the pre-charging resistor R is connected to the first tank 211.
  • the controller 213 is used to control the positive contactor K1, the negative contactor K2, and the pre-contactor. The closing and opening of the charging contactor K3 is controlled.
  • the rail vehicle moves toward the charging module 20 Send a precharge command.
  • the charging module 20 performs a self-check.
  • its controller 213 controls the negative contactor K2 and the pre-charge contactor K3 to close after receiving the pre-charge instruction, so as to charge the charging tank through the pre-charge resistor R Perform pre-charging.
  • the charging blade is directly opposite the corresponding charging slot, and the rail vehicle sends a charging permission instruction to the charging module 20.
  • the controller 213 controls the pre-charge contactor K3 to be disconnected, and Control the positive contactor K1 to close to perform main charging for rail vehicles.
  • the SOC State of Charge
  • the rail vehicle will send a charging end command to the charging module 20, and the controller 213 will receive the charging end
  • the charging power of the first AC / DC converter 211 is limited to 0, and the positive contactor K1 is controlled to open to complete the charging of the rail vehicle into the station.
  • the charging unit 21 further includes a filter 214.
  • One end of the filter 214 is connected to the DC side of the first AC / DC converter 211, and the other end of the filter 214 is connected to one end of the charging circuit 212.
  • the DC power output from the first AC / DC converter 211 can be filtered by the filter 214 so that the DC power input to the current receiver 22 is stable, and the charging effect can be improved.
  • the rail transit power supply system may further include an SPD (Surge Protection Device, Surge Protector).
  • the surge protector is disposed between the transformer T and the high-voltage bus L1. Used to ensure the safety of the primary circuit of the transformer T.
  • this application integrates various mechanical and electrical equipment of medium voltage cabinets, transformers, low voltage cabinets, and charging tanks according to functional modules to make it a highly integrated device.
  • the device can be a black box-like device.
  • Equipment which has the functions of high voltage to low voltage, AC / DC conversion, and power distribution. Specifically, it is to integrate the repeated functions in the prior art.
  • it is necessary to reduce the medium voltage to a low voltage, and then boost the voltage to the required voltage in the charging cabinet.
  • Two sets of transformer devices are needed, which wastes materials and increases costs. In this application, these two voltage transformation processes are completed at once, that is, the transformer T shown in FIG.
  • 1 is used to directly reduce the voltage to the required voltage; in the prior art, it is necessary to separately set up the transformer substation and the charging cabinet.
  • One set of leakage protection device, one set of surge protection device, one set of filter device, etc. This application integrates the substation and the charging cabinet together. All only need one set of leakage protection device and one set of surge protection device. A set of filtering device is sufficient.
  • the power supply system of the present application is more streamlined, integrated, and saves more materials (including some components and cables and copper bars) on the premise that it meets the same function as the power supply system of the prior art.
  • the cost has been greatly reduced, making rail vehicle power supply more economical and reliable.
  • the supply, distribution, distribution and charging are unified and coordinated, with fewer interfaces, lower failure rates, more economical, applicable, safe and reliable.
  • the rail transit power supply system further includes an energy storage device 30, wherein the energy storage device 30 includes a second AC / DC converter 31, an energy storage battery 32, and a third AC / DC converter 33 and DC / DC converter 34.
  • the AC side of the second AC / DC converter 31 is connected to the first power supply bus L2
  • the energy storage battery 32 is connected to the DC side of the second AC / DC converter 31, and the third AC / DC converter 33
  • the AC side is connected to the second power supply bus L3
  • one end of the DC / DC converter 34 is connected to the DC side of the third AC / DC converter 33
  • the other end of the DC / DC converter 34 is connected to the energy storage battery 32.
  • the AC side of the second AC / DC converter 31 may be connected to the first power supply bus L2 through a circuit breaker QF1, and the AC side of the third AC / DC converter 33 may be opened by an open circuit.
  • the converter QF2 is connected to the second power supply bus L3, and the second AC / DC converter 31, the third AC / DC converter 33, and the DC / DC converter 34 may all be bidirectional converters.
  • the QF1 and / or QF2 can be controlled to close, and the energy storage device 30 can be controlled to store electrical energy; when the city grid power supply is abnormal, the QF1 and The QF2 is closed, and the energy storage device 30 is controlled to release electric energy to power the low-voltage load through the first power supply bus L2, and / or the power is supplied to the charging module 20 through the second power bus L3.
  • QF2 when the low-voltage load and the charging module 20 have an electrical demand at the same time, QF2 may be controlled to be closed preferentially, and the energy storage device 30 may be controlled to supply power to the charging module 20 through the second power supply bus L3.
  • the rail transit power supply system may further include a photovoltaic power generation device 40, wherein the photovoltaic power generation device 40 includes a photovoltaic power generation component 41 and a fourth AC / DC converter 42.
  • the photovoltaic power generation module 41 is used to generate power using solar energy. 5
  • the AC side of the fourth AC / DC converter 42 is connected to the second power supply bus L3
  • the DC side of the fourth AC / DC converter 42 is connected to the photovoltaic power generation module 41.
  • the photovoltaic power generation module 41 may include a storage battery for storing electrical energy.
  • a circuit breaker QF3 may be connected between the photovoltaic power generation device 40 and the first power supply bus L2.
  • the photovoltaic power generation device 40 can be used as the auxiliary power supply for the municipal power grid.
  • QF3 can be controlled to close so that the photovoltaic power generation device 40 and the municipal power grid are connected to the grid for power supply.
  • the QF3 can be controlled to be closed so that the photovoltaic power generation device 40 can supply low voltage loads through the first power supply bus L2. If the photovoltaic power generation device 40 has sufficient power at this time, the QF1 can be controlled to close and the energy storage device 30 can be controlled to store energy.
  • the function of the power supply system can be made more perfect.
  • the energy storage device can be used to provide power to the low-voltage load and / or charging module in time to ensure the power supply system.
  • the reliability has reduced the bad influence caused by the city power outage.
  • a circuit breaker QF4 can be connected between the incoming line of the municipal power grid and the high-voltage bus L1, and an open circuit can be connected between the outgoing line of the municipal power grid and the high-voltage bus L1.
  • Circuit breaker QF5 a circuit breaker QF6 may be connected between the primary side of the transformer T and the high-voltage bus L1
  • a circuit breaker QF7 may be connected between the first secondary side of the transformer T and the first power bus L2, and the low-voltage load and the first power supply
  • a circuit breaker QF8 may be connected between the bus bars L2
  • a circuit breaker QF9 may be connected between the charging module 20 and the second power supply bus L3.
  • the rail transit power supply system in the embodiment of the present application integrates the power distribution module and the charging unit, which facilitates unified and coordinated management of the power supply of the rail transit low-voltage load and the charging module, while saving the station's area and improving the The reliability of power supply is reduced, and the cost of power supply is reduced, thereby improving the economics of power supply.
  • the installation of energy storage devices and photovoltaic power generation devices can improve the power supply reliability of the power supply system and alleviate the adverse effects of power outages in the city grid.
  • first and second are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as “first” and “second” may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality” is at least two, for example, two, three, etc., unless it is specifically and specifically defined otherwise.
  • the terms “installation,” “connected,” “connected,” and “fixed” should be broadly understood unless otherwise specified and limited. For example, they can be fixed connections or removable connections. , Or integrated; it can be mechanical or electrical; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of the two elements or the interaction between the two elements, unless otherwise specified The limit.
  • the specific meanings of the above terms in this application can be understood according to specific situations.
  • the first feature "on” or “down” of the second feature may be the first and second features in direct contact, or the first and second features indirectly through an intermediate medium. contact.
  • the first feature is “above”, “above”, and “above” the second feature.
  • the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher in level than the second feature.
  • the first feature is “below”, “below”, and “below” of the second feature.
  • the first feature may be directly below or obliquely below the second feature, or it may simply indicate that the first feature is less horizontal than the second feature.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Système d'alimentation électrique de transport sur rail, comprenant : un module de transformation et de distribution de puissance (10), le module de transformation et de distribution de puissance (10) comprenant un transformateur (T), un côté primaire du transformateur (T) étant connecté à un réseau par l'intermédiaire d'un bus haute-tension (L1), un premier côté secondaire du transformateur (T) étant connecté à un premier bus d'alimentation électrique (L2), un second côté secondaire du transformateur (T) étant connecté à un second bus d'alimentation électrique (L3), le premier bus d'alimentation électrique (L2) étant connecté à une charge basse-tension d'un transport ferroviaire ; et un module de charge (20), le module de charge (20) comprenant une unité de charge (21) et un récepteur de courant (22), une extrémité de l'unité de charge (21) étant connectée au second bus d'alimentation électrique (L3), l'autre extrémité de l'unité de charge (21) étant connectée au récepteur de courant (22). Le module de transformation et de distribution de puissance (10) et le module de charge (20) sont tous les deux disposés au niveau d'une station de charge, lorsqu'un véhicule ferroviaire est arrimé au niveau de la station de charge, le récepteur de courant (22) est connecté à un collecteur de courant du véhicule ferroviaire, permettant ainsi à l'unité de charge (21) de charger le véhicule ferroviaire.
PCT/CN2019/097831 2018-07-27 2019-07-26 Système d'alimentation électrique de transport sur rail WO2020020325A1 (fr)

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CN201810848042.9 2018-07-27
CN201810848042.9A CN110768243B (zh) 2018-07-27 2018-07-27 轨道交通供电系统

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Cited By (7)

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CN113328433A (zh) * 2021-04-29 2021-08-31 清华大学 电力分配方法
CN113381429A (zh) * 2021-06-04 2021-09-10 西南交通大学 一种轨道交通柔性供电装置及协调控制方法
CN113452010A (zh) * 2020-03-27 2021-09-28 比亚迪股份有限公司 轨道交通供电系统及轨道交通供电系统的控制方法
CN114204576A (zh) * 2020-09-17 2022-03-18 南通中集特种运输设备制造有限公司 储能系统及其控制方法及储能集装箱
CN114665510A (zh) * 2022-05-27 2022-06-24 西安海联石化科技有限公司 一种光电能源直流供电抽油机井群节能控制系统
WO2023111338A1 (fr) * 2021-12-17 2023-06-22 Torqeedo Gmbh Transformateur pour embarcation, système de distribution d'énergie pour embarcation, et embarcation
CN118017524A (zh) * 2024-04-10 2024-05-10 湖南大学 面向贯通型牵引供电系统的实时高效能量管控方法

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CN111210702B (zh) * 2020-03-03 2022-06-28 广州株电交通设备有限公司 地铁牵引变电系统培训平台
CN114976887A (zh) * 2022-07-12 2022-08-30 天津建电电气股份有限公司 一种母线装配系统及其装配方法
CN116470643A (zh) * 2023-04-24 2023-07-21 北京城建设计发展集团股份有限公司 一种轨道交通电动机负荷远距离配电系统

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Cited By (9)

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Publication number Priority date Publication date Assignee Title
CN113452010A (zh) * 2020-03-27 2021-09-28 比亚迪股份有限公司 轨道交通供电系统及轨道交通供电系统的控制方法
CN113452010B (zh) * 2020-03-27 2023-06-13 比亚迪股份有限公司 轨道交通供电系统及轨道交通供电系统的控制方法
CN114204576A (zh) * 2020-09-17 2022-03-18 南通中集特种运输设备制造有限公司 储能系统及其控制方法及储能集装箱
CN113328433A (zh) * 2021-04-29 2021-08-31 清华大学 电力分配方法
CN113381429A (zh) * 2021-06-04 2021-09-10 西南交通大学 一种轨道交通柔性供电装置及协调控制方法
WO2023111338A1 (fr) * 2021-12-17 2023-06-22 Torqeedo Gmbh Transformateur pour embarcation, système de distribution d'énergie pour embarcation, et embarcation
CN114665510A (zh) * 2022-05-27 2022-06-24 西安海联石化科技有限公司 一种光电能源直流供电抽油机井群节能控制系统
CN114665510B (zh) * 2022-05-27 2022-08-23 西安海联石化科技有限公司 一种光电能源直流供电抽油机井群节能控制系统
CN118017524A (zh) * 2024-04-10 2024-05-10 湖南大学 面向贯通型牵引供电系统的实时高效能量管控方法

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