WO2020010499A1 - Train traction power supply device and system, and control method - Google Patents

Train traction power supply device and system, and control method Download PDF

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Publication number
WO2020010499A1
WO2020010499A1 PCT/CN2018/095068 CN2018095068W WO2020010499A1 WO 2020010499 A1 WO2020010499 A1 WO 2020010499A1 CN 2018095068 W CN2018095068 W CN 2018095068W WO 2020010499 A1 WO2020010499 A1 WO 2020010499A1
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WO
WIPO (PCT)
Prior art keywords
power supply
ice
supply device
traction power
train traction
Prior art date
Application number
PCT/CN2018/095068
Other languages
French (fr)
Chinese (zh)
Inventor
刘志刚
张钢
陈杰
郝峰杰
牟富强
魏路
吕海臣
邱瑞昌
漆良波
杜军
路亮
刘祥鹏
孙星亮
Original Assignee
北京千驷驭电气有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京千驷驭电气有限公司 filed Critical 北京千驷驭电气有限公司
Priority to PCT/CN2018/095068 priority Critical patent/WO2020010499A1/en
Publication of WO2020010499A1 publication Critical patent/WO2020010499A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00—Overhead installations of electric lines or cables
    • H02G7/16—Devices for removing snow or ice from lines or cables
    • 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
    • H02J5/00—Circuit arrangements for transfer of electric power between ac networks and dc networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/66—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/66—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal
    • H02M7/68—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters
    • H02M7/72—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/79—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/797—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only

Definitions

  • the invention relates to the technical field of traction power supply of urban rail transit, in particular to a traction power supply device, system and control method of a train.
  • the diode rectifier unit and the four-quadrant converter unit are simultaneously driven by the traction substation train It can reduce the voltage of AC power and rectify it into DC power and provide DC power to the train.
  • the four-quadrant converter unit feeds the regenerative braking energy generated by the train back to the medium-voltage grid side to improve train braking. Energy use efficiency.
  • the invention provides a train traction power supply device, system and control method, which enrich the functions of the train traction power supply system.
  • the invention provides a train traction power supply device, including: a diode rectifier unit, a four-quadrant converter unit and a central controller;
  • the diode rectifier unit, the four-quadrant converter unit and the central controller are connected in parallel to an AC power grid and a DC contact network.
  • the central controller is connected to the four-quadrant converter unit.
  • the voltage and current of the AC grid and the voltage of the DC contact grid adjust the output current of the four-quadrant converter unit;
  • the diode rectifier unit and the four-quadrant converter unit convert the AC power of the AC grid into DC power and output the DC power to the DC contact network;
  • the four-quadrant converter unit converts the DC power of the DC contact network into AC power and outputs the AC power to the AC power grid;
  • the central controller controls the four-quadrant converter unit to perform reactive power compensation on the AC power grid according to the power factor of the AC power grid;
  • the central controller is further configured to receive an inverter instruction including an ice melting current value sent by the ice melting control device, and switch the train traction power supply device to an inverter working state according to the inverter instruction, so that the train The four-quadrant converter unit of the train traction power supply device, the ice-to-be-melted section of the DC contact network, the diode rectifier unit of the train traction power supply device adjacent to the ice-to-be-melted section, and the AC grid corresponding to the ice-to-be-melted section. An energy cycle is formed therebetween, and the current in the ice-to-be-melted section of the DC contact network is not less than the ice-melt current value.
  • the central controller is further configured to receive a rectification instruction including an ice melting current value sent by the ice melting control device, and switch the train traction power supply device to a rectification mode according to the rectification instruction. ;
  • the four-quadrant converter unit of the train traction power supply device in the inverter mode, the ice-to-be-melted section of the DC contact network, the diode rectifier unit of the train traction power supply device in the rectified mode, and the ice-to-be-melted section Energy cycles are formed between the corresponding AC grids, and the current of the ice-to-be-melted section of the DC contact network is not less than the ice-melt current value.
  • the central controller when the train traction power supply device is in a reactive power compensation working condition, is specifically configured to generate reactive current through reactive power at an incoming line of a main substation of the AC power grid An instruction to send the reactive current instruction to the four-quadrant converter unit, so that the four-quadrant converter unit performs reactive compensation on the AC power grid.
  • the central controller independently controls the reactive power and active power at the incoming line of the main substation of the AC grid.
  • the diode rectifier unit is a 24-pulse diode rectifier unit, which includes: two rectifier transformers and four diode rectifier bridges.
  • the four-quadrant converter unit includes a dual-winding transformer and a four-quadrant converter.
  • An embodiment of the present invention provides a train traction power supply system, including: an ice melting control device and N train traction power supply devices according to any one of claims 1-6;
  • the central controllers of the N train traction power supply devices are connected to the ice melting control device;
  • the ice melting control device is used to calculate the ice melting current value based on the ice thickness of the DC contact network and the environmental conditions, and send an inverter signal to one of the train traction power supply devices corresponding to the ice melting section to make all
  • the four-quadrant converter unit of the train traction power supply device, the ice melting section of the DC contact network, the diode rectification unit of the train traction power supply device adjacent to the ice melting section and the AC power grid corresponding to the ice melting section An energy cycle is formed therebetween, and the current of the ice-to-be-melted section of the DC contact network is not less than the ice-melt current value.
  • the ice melting control device is further configured to send a rectification signal to another train traction power supply device corresponding to the ice melting section;
  • the four-quadrant converter unit of the train traction power supply device in the inverter mode, the ice-to-be-melted section of the DC contact network, the diode rectifier unit of the train traction power supply device in the rectified mode, and the ice-to-be-melted section Energy cycles are formed between the corresponding AC grids, and the current of the ice-to-be-melted section of the DC contact network is not less than the ice-melt current value.
  • An embodiment of the present invention provides a method for controlling a train traction power supply system, including: calculating an ice melting current value through an ice thickness of a DC contact network and environmental conditions;
  • the method further includes:
  • the invention provides a train traction power supply device, system and control method, wherein the device includes: a diode rectifier unit, a four-quadrant converter unit, and a central controller; the diode rectifier unit, a four-quadrant converter unit, and a central controller are connected in parallel to exchange AC
  • the central controller is connected to the four-quadrant converter unit of the power grid and the DC contact network.
  • the central controller is used to adjust the output current of the four-quadrant converter unit according to the voltage and current of the AC grid and the voltage of the DC contact network. Under normal conditions, the diode rectifier unit and the four-quadrant converter unit convert the AC power of the AC grid into DC power and output it to the DC contact network.
  • the four-quadrant converter unit converts the DC power of the DC contact network into The AC power is output to the AC power grid; when the train traction power supply device is in the reactive power compensation mode, the central controller controls the four-quadrant converter unit to perform reactive power compensation on the AC power grid based on the power factor of the AC power grid; the central controller is also used to receive melting ice The inverse of the value of the melting current sent by the control device Instruction, and switch the train traction power supply device to the inverter mode according to the inverter instruction, so that the four-quadrant converter unit of the train traction power supply device, the to-be-thawed section of the DC contact network, and the adjacent train to-be-thawed section are towed An energy cycle is formed between the diode rectifier unit of the power supply device and the AC power grid corresponding to the ice melting section, and the current of the ice melting section of the DC contact network is not less than the ice melting current value
  • the train traction power supply device When the train traction power supply device is in the traction mode, it provides energy for train operation;
  • the train traction power supply device When the train traction power supply device is in the braking mode, it can realize bidirectional transmission of energy, and feed back the excess braking energy to the AC grid for other loads to save energy;
  • the traction power supply device of the train is in the reactive power compensation condition, which can compensate the reactive power and make the power factor meet the requirements;
  • the contact grid When the contact grid is covered with ice, by controlling the two trains' traction power supply units in the section to be thawed, it forms a path between the AC grid and the DC contact grid, thereby achieving ice melting and avoiding the use of additional
  • the capacity DC adjustable power supply reduces the harmonic pollution to the AC grid.
  • FIG. 1 is a schematic structural diagram of a train traction power supply device of the present invention
  • FIG. 2 is a schematic diagram of the working principle of the train traction power supply device of the present invention in a traction working condition
  • FIG. 3 is a schematic diagram of the working principle of the train traction power supply device of the present invention when it is in a braking mode;
  • FIG. 4 is a schematic diagram of the working principle of the train traction power supply device of the present invention in a reactive power compensation mode
  • FIG. 5 is a schematic diagram of the working principle of the train traction power supply device of the present invention when it is in an inverter mode
  • FIG. 6 is a schematic diagram of a control principle of a train traction power supply device according to the present invention.
  • FIG. 7 is a schematic structural diagram of a diode rectifier unit of a train traction power supply device of the present invention.
  • FIG. 8 is a schematic structural diagram of a four-quadrant converter unit of a train traction power supply device according to the present invention.
  • FIG. 9 is a schematic structural diagram of a train traction power supply system of the present invention.
  • FIG. 10 is a schematic flowchart of a first embodiment of a method for controlling a train traction power supply system according to the present invention
  • FIG. 11 is a schematic flowchart of a second embodiment of a method for controlling a train traction power supply system according to the present invention.
  • FIG. 1 is a schematic structural diagram of a train traction power supply device of the present invention.
  • a train traction power supply device provided in an embodiment of the present invention includes a diode rectifier unit, a four-quadrant converter unit, and a central controller.
  • the diode rectifier unit, the four-quadrant converter unit and the central controller are connected in parallel to the AC power grid and the DC contact network.
  • the central controller is connected to the four-quadrant converter unit.
  • the central controller is used to The output current of the voltage-adjusted four-quadrant converter unit; when the traction power supply device of the train is in traction mode, the diode rectifier unit and the four-quadrant converter unit convert the AC power of the AC grid into DC power and output it to the DC contact network; During dynamic operating conditions, the four-quadrant converter unit converts the DC power from the DC contact network into AC power and outputs it to the AC grid. When the train traction power supply device is in the reactive power compensation mode, the central controller controls the four-quadrant converter based on the power factor of the AC grid.
  • the unit performs reactive power compensation on the AC grid; the central controller is also used to receive the inverter instruction including the melting current value sent by the ice melting control device, and switch the train traction power supply device to the inverter operating condition according to the inverter instruction to
  • the four-quadrant converter unit of the traction power supply device of the train contacts the DC An energy cycle is formed between the diode rectifier unit of the train traction power supply device adjacent to the train to be thawed, and the AC power grid corresponding to the zone to be thawed, and the current of the zone to be thawed by the DC contact network does not change. Less than the melting current value.
  • the train traction power supply device in this embodiment operates a diode rectifier unit and a four-quadrant converter unit in parallel to realize traction power supply and train regeneration at the same time. Brake energy feedback, reactive power compensation, and ice melting on the contact network.
  • Figure 2 is a schematic diagram of the working principle of the traction power supply device of the train of the present invention when it is in traction mode.
  • the train traction is in a traction mode, and the diode rectifier unit and the four-quadrant converter unit jointly provide energy to the train.
  • the diode rectifier unit and the four-quadrant converter unit convert the AC power of the AC grid into DC power and output the DC power to the DC contact network, so that the train can obtain traction energy through the DC power connected to the DC contact network.
  • Figure 3 is a schematic diagram of the working principle of the train traction power supply device of the present invention when it is under braking conditions. As shown in Figure 3, when there is a train brake near the train traction power supply device, the train traction power supply device opens the braking mode, and the regenerative braking energy of the train can be fed back to the AC grid for reuse through a four-quadrant converter unit. Among them, the four-quadrant converter unit converts the DC power of the DC contact network into AC power and outputs it to the AC power grid.
  • FIG. 4 is a schematic diagram of the working principle when the traction power supply device of the train of the present invention is in a reactive power compensation mode.
  • the reactive power can be compensated by the four-quadrant converter unit of the train power supply device, so that the power factor meets the requirements.
  • the train traction power supply device generates reactive power through line cable capacitance.
  • the central controller of the traction power supply device of the train can control the four-quadrant converter to perform reactive power compensation on the AC power grid according to the power factor of the AC power grid when the system is in the reactive power compensation mode.
  • FIG. 5 is a schematic diagram of the working principle of the train traction power supply device of the present invention when it is in an inverter mode.
  • the train traction power supply device receives an inverter instruction including the ice melting current value sent by the ice melting control device in the system Then, according to the inverter instruction, the train traction power supply device is switched to the inverter working condition, so that the four-quadrant converter unit of the train traction power supply device in the inverter working condition, the ice-to-be-melted section of the DC contact network, and the to-be-melted
  • An energy cycle is formed between the diode rectifier unit of the train traction power supply device adjacent to the ice section and the AC power grid corresponding to the ice section to be melted, that is, the direction of the energy cycle shown by the arrow in FIG.
  • the central controller also controls the current of the ice-to-be-melted section of the DC contact network to be not less than the value of the ice-melting current sent by the ice-melting control device.
  • the ice melting current value may be the ice melting control device that calculates the required ice melting current based on the monitoring information of the ice to be melted section on the DC contact network, such as the monitoring information of environmental conditions such as ice thickness, temperature, and humidity. value.
  • the train traction power supply device of the train traction power supply device in the inverter mode may further include a rectification mode.
  • the central controller of the train traction power supply device can also receive a rectification instruction including the ice melting current value sent by the ice melting control device, and according to the rectification instruction, the train The traction power supply is switched to the rectification mode.
  • the four-quadrant converter unit of the train traction power supply device in the inverter mode, the DC to-be- iced section of the DC contact network, and the diode rectifier unit of the train traction power supply device in the rectified mode correspond to the ice-to-thaw section.
  • An energy cycle is formed between the AC grids.
  • the current in the ice-to-be-melted section between the train traction power supply device in the inverter mode and the train traction power supply device in the rectification mode is not less than the ice melting current value sent by the ice melting control device.
  • the ice melting current value may be a required ice melting current value calculated by the ice melting control device according to the environmental conditions such as the thickness of the ice layer to be melted, the temperature, and the humidity on the DC contact network.
  • the train traction power supply device provided in the embodiment of the present application can convert the AC power of the AC power grid to DC power and output the DC power to the DC contact network when the train traction power supply device is in a traction mode.
  • the four-quadrant converter unit converts the DC power from the DC contact network to AC power and outputs it to the AC power grid.
  • the central controller When the traction power supply device of the train is in the reactive power compensation mode, the central controller according to the power factor of the AC power grid Control the four-quadrant converter to perform reactive power compensation on the AC power grid; the central controller is also used to receive the inverter instruction including the ice melting current value sent by the ice melting control device, and switch the train traction power supply device to the inverse according to the inverter instruction Change the working conditions so that the four-quadrant converter unit of the train traction power supply unit, the DC ice contact section of the ice to be melted, the diode rectifier unit of the train traction power supply device adjacent to the ice to be melted section, and the AC corresponding to the ice to be melted section An energy cycle is formed between the power grids, and the current in the ice to-be-melted section of the DC contact network is not less than the melting The current value.
  • the train traction power supply device When the train traction power supply device is in the traction mode, it provides energy for train operation; 2. When the train traction power supply device is in the brake mode, two-way transmission of energy can be achieved, and the excess The braking energy is fed back to the AC grid for use by other loads to achieve energy saving; 3. When the power factor of the entire traction power supply system is low, the train traction power supply device is in a reactive power compensation condition, which can compensate the reactive power and satisfy the power factor Requirements; 4.
  • the contact grid When the contact grid is covered with ice, by controlling the two trains' traction power supply units in the section to be thawed, it forms a path between the AC grid and the DC contact grid, thereby achieving ice melting and avoiding the use of additional
  • the large-capacity DC adjustable power supply reduces the harmonic pollution to the AC grid.
  • the central controller when the train traction power supply device is in a reactive power compensation mode, the central controller is specifically configured to generate a reactive current instruction through the reactive power at the incoming line of the AC main transformer substation and tow the train
  • the four-quadrant converter unit of the power supply device sends a reactive current command, so that the four-quadrant converter unit performs reactive power compensation on the AC grid.
  • it can be understood as the use of a four-quadrant converter to compensate the AC grid's reactive power.
  • control logic for reactive power compensation can be written in the controller for determination, or determined based on preset quantized data, which is not limited here.
  • FIG. 6 is a schematic diagram of the control principle of the train traction power supply device of the present invention.
  • the current closed-loop control method of the four-quadrant converter unit uses current decoupling control based on a synchronous rotating coordinate system to achieve independent control of active power and reactive power.
  • the grid voltage synchronization angle ⁇ is obtained; coordinate transformation is used to convert the three-phase current into two-phase currents id and iq, where id represents the active current and iq represents the reactive current
  • the calculation of the active current command is obtained by detecting the DC contact network voltage and performing PI closed-loop control; the calculation of the reactive current command is received by the central controller from the SCADA based on The reactive power value at the incoming line of the main substation is calculated, and the calculation formula is Among them, Ed is the value of the transformer secondary voltage in the synchronous coordinate system; the output of the d and q axis PI control is used for modulation, and six driving pulses are generated.
  • the diode rectifier unit is a 24-pulse diode rectifier unit, which includes: two rectifier transformers and four diode rectifier bridges.
  • FIG. 7 is a schematic structural diagram of a diode rectifier unit of a train traction power supply device of the present invention.
  • the two windings of the three-winding phase-shifting transformer are connected by delta sides of the extended side and phase shifted by + 7.5 ° and -7.5 ° respectively; the secondary side adopts star connection and angle connection respectively; the transformer reduces the high-voltage AC voltage to the diode rectifier.
  • the required AC voltage; the DC side of the diode rectifier is connected in parallel.
  • the diode rectifier unit supplies power to the train when it is being towed, and does not function when the train is braking.
  • the four-quadrant converter unit includes a dual-winding transformer and a four-quadrant converter.
  • FIG. 8 is a schematic structural diagram of a four-quadrant converter unit of a train traction power supply device of the present invention.
  • the four-quadrant converter uses an isolated dual main circuit, that is, a multi-winding transformer is used to isolate the AC sides of the PWM rectifiers from each other; the primary side of the transformer is connected in a star shape, and the secondary side is connected in a delta; the transformer connects the high-voltage AC The voltage is reduced to the AC voltage required by the four-quadrant converter.
  • FIG. 9 is a schematic structural diagram of a train traction power supply system of the present invention.
  • the train traction power supply system provided by the embodiment of the present application includes: an ice melting control device and N train traction power supply devices as in any of the above embodiments.
  • the central controller of the traction power supply device of N trains is connected to the ice melting control device; the ice melting control device is used to calculate the ice melting current value through the ice thickness and environmental conditions of the DC contact network, and corresponding to the ice melting section
  • a train traction power supply device sends an inverter signal to enable the four-quadrant converter unit of the train traction power supply device, the ice to-be-melted section of the DC contact network, the diode rectifier unit of the train traction power supply device adjacent to the ice-to-thaw section, and the An energy cycle is formed between the AC grids corresponding to the ice melting section, and the current of the ice to be melted section of the DC contact network is not less than the current value of the ice melting.
  • the ice melting control device is based on the monitoring information of the DC to-be-melted section on the DC contact network, such as the ice thickness, temperature, and humidity.
  • the condition monitoring information calculates the required value of the ice melting current.
  • the ice melting control device sends an inverter instruction including the ice melting current value to the central controller of any train traction power supply device beside the ice to be melted section, and makes the train power supply device receiving the inverter instruction , According to the inverter instruction, the train traction power supply device is switched to the inverter mode, so that the four-quadrant converter unit of the train traction power supply device in the inverter mode, the ice-to-be-melted section of the DC contact network, and the ice-to-be-melted An energy cycle is formed between the diode rectifier unit of the train traction power supply device adjacent to the section and the AC grid corresponding to the section to be thawed, that is, the energy cycle direction in the direction of the arrow shown in FIG.
  • the central controller of the train power supply device that receives the inverter instruction also controls the current of the ice-to-be-melted section of the DC contact network to be not less than the ice-melt current value sent by the ice-melt control device.
  • the ice melting control device sends an inverter instruction including the ice melting current value to the central controller of any train traction power supply device, and also sends the ice melting section to the inverter in an inverter working condition.
  • the train traction power supply device adjacent to the train traction power supply device and located on the other side of the section to be thawed by ice sends a rectification instruction containing the current value of thawing.
  • the train traction power supply device that receives the rectification instruction switches the train traction power supply device to a rectification mode according to the rectification instruction.
  • the four-quadrant converter unit of the train traction power supply device in the inverter mode the ice-to-be-separated section of the DC contact network, and An energy cycle is formed between the diode rectifier unit of the traction power supply device of the train in the rectification condition and the AC power grid corresponding to the section to be thawed.
  • the current in the ice-to-be-melted section between the train traction power supply device in the inverter mode and the train traction power supply device in the rectification mode is not less than the ice melting current value sent by the ice melting control device.
  • FIG. 10 is a schematic flowchart of a first embodiment of a method for controlling a train traction power supply system according to the present invention. As shown in FIG. 10, the method for controlling a train traction power supply system provided in this embodiment includes:
  • S1001 Calculate the melting current value based on the ice thickness and environmental conditions of the DC contact grid.
  • S1002 Send an inverter signal to one of the train traction power supply devices corresponding to the ice to be melted section, so that the four-quadrant converter unit of the train traction power supply device, the ice to be melted section of the DC contact network, the An energy cycle is formed between the diode rectifier unit of the train traction power supply device adjacent to the ice melting section and the AC grid corresponding to the ice melting section, and the current of the ice melting section of the DC contact network is not less than the melting Ice current value.
  • the control method of the train traction power supply system provided in this embodiment is used to execute in the train traction power supply system shown in FIG. 9.
  • the implementation method and the principle thereof are the same, and reference may be made to the foregoing embodiment, and details are not described herein again.
  • FIG. 11 is a schematic flowchart of a second embodiment of a method for controlling a train traction power supply system according to the present invention.
  • the embodiment shown in FIG. 11 is based on the embodiment shown in FIG. 10, and after S1002, it further includes:
  • S1003 Send a rectification signal to another of the train traction power supply device corresponding to the ice to be melted section, so that the four-quadrant converter unit of the train traction power supply device in the inverter operating state and the DC contact network are to be thawed.
  • Energy cycle is formed between the section, the diode rectifier unit of the train traction power supply device in the rectifying condition and the AC power grid corresponding to the ice to be melted section, and the current of the ice to be melted section of the DC contact network is not less than The ice melting current value.
  • control method of the train traction power supply system provided in this embodiment is used to execute in the train traction power supply system shown in FIG. 9, and the implementation manner and the principle thereof are the same. For details, reference may be made to the foregoing embodiments.
  • An embodiment of the invention also provides an electronic device, including:
  • a processor and a memory for storing executable instructions of the processor
  • the processor is configured to execute the method for controlling a train traction power supply system in any one of the foregoing embodiments by executing executable instructions.
  • An embodiment of the present invention further provides a storage medium including a readable storage medium and a computer program stored on the readable storage medium, and the computer program is configured to implement the train described in the foregoing embodiments. Control method of traction power supply system.
  • An embodiment of the present invention also provides a program product.
  • the program product includes:
  • a computer program (ie, executing instructions) stored in a readable storage medium.
  • At least one processor of the encoding device may read the computer program from a readable storage medium, and the at least one processor executes the computer program to cause the encoding device to implement the method for controlling a train traction power supply system provided by the foregoing various embodiments.
  • a person of ordinary skill in the art may understand that all or part of the steps of implementing the foregoing method embodiments may be implemented by a program instructing related hardware.
  • the aforementioned program may be stored in a computer-readable storage medium.
  • the steps including the foregoing method embodiments are performed; and the foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disc.

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  • Electric Propulsion And Braking For Vehicles (AREA)
  • Inverter Devices (AREA)

Abstract

A train traction power supply device, comprising a diode rectifier set, a four-quadrant converter set, and a central controller. The diode rectifier set, the four-quadrant converter set, and the central controller are connected in parallel to an alternating current power network and a direct current contact network. The central controller is connected to the four-quadrant converter set. The central controller is used for adjusting the output current of the four-quadrant converter set according to voltage and current of the alternating current power network and the voltage of the direct current contact network. The central controller is further used for receiving an inversion instruction comprising a de-icing current value sent by a de-icing control device, and switching the train traction power supply device to an inversion working position according to the inversion instruction, so that an energy cycle is formed among the four-quadrant converter unit of the train traction power supply device, a zone to be de-iced of the direct current contact network, the diode rectifier set of the train traction power supply device adjacent to the zone to be de-iced, and the alternating current power network corresponding to the zone to be de-iced. Also provided are a train traction power supply system and a control method therefor. According to the train traction power supply device and system, and the control method, the functions of the train traction power supply system are enriched.

Description

列车牵引供电装置、***及控制方法Train traction power supply device, system and control method 技术领域Technical field
本发明涉及城市轨道交通牵引供电技术领域，尤其涉及一种列车牵引供电装置、***及控制方法。The invention relates to the technical field of traction power supply of urban rail transit, in particular to a traction power supply device, system and control method of a train.
背景技术Background technique
城市轨道交通由于具有安全舒适、载客量大、运行速度快、节能环保等优势，成为了解决日益严重的城市拥堵问题的首选方案，因此我国目前多地开始发展建设城市轨道交通。在一些列车牵引供电***中，通过设置多个并联的牵引变电所，将中压电网侧的交流电转化直流电为列车提供牵引电流。但是由于牵引变电所内二极管整流机组的能量只能单向流动，列车再生制动能量无法反馈回中压电网再利用，造成了能量的巨大浪费。Because of its advantages such as safety and comfort, large passenger capacity, fast running speed, energy saving and environmental protection, urban rail transit has become the first choice for solving the increasingly serious problem of urban congestion. Therefore, China has begun to develop urban rail transit in many places. In some train traction power supply systems, by setting up multiple traction substations in parallel, the AC power on the medium-voltage grid side is converted to DC power to provide traction current for the train. However, because the energy of the diode rectifier unit in the traction substation can only flow in one direction, the regenerative braking energy of the train cannot be fed back to the medium voltage grid for reuse, resulting in a huge waste of energy.
现有技术中的部分列车牵引供电***中，通过在牵引变电所内增加与二极管整流机组并联的四象限变流机组，使得牵引变电所在列车牵引时，二极管整流机组和四象限变流机组同时工作，能够将交流电降压并整流转化为直流电，并向列车提供直流电；在列车制动时，四象限变流机组将列车产生的再生制动能量反馈中压电网侧，以提高列车制动能量的利用效率。In the traction power supply system of some trains in the prior art, by adding a four-quadrant converter unit connected in parallel with the diode rectifier unit in the traction substation, the diode rectifier unit and the four-quadrant converter unit are simultaneously driven by the traction substation train It can reduce the voltage of AC power and rectify it into DC power and provide DC power to the train. When the train is braking, the four-quadrant converter unit feeds the regenerative braking energy generated by the train back to the medium-voltage grid side to improve train braking. Energy use efficiency.
除了牵引与制动之外，列车牵引供电***的设计人员及操作人员还希望其能够承担更多的控制功能，然而现有技术中的列车牵引供电***功能却较为单一。In addition to traction and braking, designers and operators of train traction power supply systems also hope that they can assume more control functions. However, the functions of train traction power supply systems in the prior art are relatively single.
发明内容Summary of the invention
本发明提供一种列车牵引供电装置、***及控制方法，丰富了列车牵引供电***的功能。The invention provides a train traction power supply device, system and control method, which enrich the functions of the train traction power supply system.
本发明提供一种列车牵引供电装置，包括：二极管整流机组、四象限变流机组和中央控制器；The invention provides a train traction power supply device, including: a diode rectifier unit, a four-quadrant converter unit and a central controller;
所述二极管整流机组、所述四象限变流机组和所述中央控制器并联连接交流电网和直流接触网，所述中央控制器连接所述四象限变流机组，所述中 央控制器用于根据所述交流电网的电压、电流和所述直流接触网的电压调整所述四象限变流机组的输出电流；The diode rectifier unit, the four-quadrant converter unit and the central controller are connected in parallel to an AC power grid and a DC contact network. The central controller is connected to the four-quadrant converter unit. The voltage and current of the AC grid and the voltage of the DC contact grid adjust the output current of the four-quadrant converter unit;
所述列车牵引供电装置处于牵引工况时，所述二极管整流机组和所述四象限变流机组将所述交流电网的交流电转换为直流电向所述直流接触网输出；When the train traction power supply device is in a traction mode, the diode rectifier unit and the four-quadrant converter unit convert the AC power of the AC grid into DC power and output the DC power to the DC contact network;
所述列车牵引供电装置处于制动工况时，所述四象限变流机组将所述直流接触网的直流电转换为交流电向所述交流电网输出；When the train traction power supply device is in a braking condition, the four-quadrant converter unit converts the DC power of the DC contact network into AC power and outputs the AC power to the AC power grid;
所述列车牵引供电装置处于无功补偿工况时，所述中央控制器根据所述交流电网的功率因数控制所述四象限变流机组对所述交流电网进行无功补偿；When the train traction power supply device is in a reactive power compensation mode, the central controller controls the four-quadrant converter unit to perform reactive power compensation on the AC power grid according to the power factor of the AC power grid;
所述中央控制器还用于接收融冰控制装置发送的包含融冰电流值的逆变指令，并根据所述逆变指令将所述列车牵引供电装置切换至逆变工况，以使所述列车牵引供电装置的四象限变流机组、直流接触网的待融冰区段、所述待融冰区段相邻的列车牵引供电装置的二极管整流机组和所述待融冰区段对应的交流电网之间形成能量循环，且所述直流接触网的待融冰区段的电流不小于所述融冰电流值。The central controller is further configured to receive an inverter instruction including an ice melting current value sent by the ice melting control device, and switch the train traction power supply device to an inverter working state according to the inverter instruction, so that the train The four-quadrant converter unit of the train traction power supply device, the ice-to-be-melted section of the DC contact network, the diode rectifier unit of the train traction power supply device adjacent to the ice-to-be-melted section, and the AC grid corresponding to the ice-to-be-melted section. An energy cycle is formed therebetween, and the current in the ice-to-be-melted section of the DC contact network is not less than the ice-melt current value.
在本发明一实施例中，所述中央控制器还用于接收融冰控制装置发送的包含融冰电流值的整流指令，并根据所述整流指令将所述列车牵引供电装置切换至整流工况；In an embodiment of the present invention, the central controller is further configured to receive a rectification instruction including an ice melting current value sent by the ice melting control device, and switch the train traction power supply device to a rectification mode according to the rectification instruction. ;
以使处于逆变工况的列车牵引供电装置的四象限变流机组、直流接触网的待融冰区段、处于整流工况的列车牵引供电装置的二极管整流机组和所述待融冰区段对应的交流电网之间形成能量循环，且所述直流接触网的待融冰区段的电流不小于所述融冰电流值。The four-quadrant converter unit of the train traction power supply device in the inverter mode, the ice-to-be-melted section of the DC contact network, the diode rectifier unit of the train traction power supply device in the rectified mode, and the ice-to-be-melted section Energy cycles are formed between the corresponding AC grids, and the current of the ice-to-be-melted section of the DC contact network is not less than the ice-melt current value.
在本发明一实施例中，所述列车牵引供电装置处于无功补偿工况时，所述中央控制器具体用于，通过所述交流电网的主变电站进线处的无功功率生成无功电流指令，向所述四象限变流机组发送所述无功电流指令，以使所述四象限变流机组对所述交流电网进行无功补偿。In an embodiment of the present invention, when the train traction power supply device is in a reactive power compensation working condition, the central controller is specifically configured to generate reactive current through reactive power at an incoming line of a main substation of the AC power grid An instruction to send the reactive current instruction to the four-quadrant converter unit, so that the four-quadrant converter unit performs reactive compensation on the AC power grid.
在本发明一实施例中，所述中央控制器对所述交流电网的主变电站进线处的无功功率和有功功率独立控制。In an embodiment of the present invention, the central controller independently controls the reactive power and active power at the incoming line of the main substation of the AC grid.
在本发明一实施例中，所述二极管整流机组为24脉波二极管整流机组，包括：两台整流变压器和四个二极管整流桥。In an embodiment of the present invention, the diode rectifier unit is a 24-pulse diode rectifier unit, which includes: two rectifier transformers and four diode rectifier bridges.
在本发明一实施例中，所述四象限变流机组包括：双绕组变压器和四 象限变流器。In an embodiment of the present invention, the four-quadrant converter unit includes a dual-winding transformer and a four-quadrant converter.
本发明一实施例提供一种列车牵引供电***，包括：融冰控制装置和N个如权利要求1-6任一项所述的列车牵引供电装置；An embodiment of the present invention provides a train traction power supply system, including: an ice melting control device and N train traction power supply devices according to any one of claims 1-6;
所述N个列车牵引供电装置的中央控制器连接所述融冰控制装置；The central controllers of the N train traction power supply devices are connected to the ice melting control device;
所述融冰控制装置用于通过直流接触网的覆冰厚度和环境条件计算出融冰电流值，并向待融冰区段对应的一个所述列车牵引供电装置发送逆变信号，以使所述列车牵引供电装置的四象限变流机组、直流接触网的待融冰区段、所述待融冰区段相邻的列车牵引供电装置的二极管整流机组和所述待融冰区段对应的交流电网之间形成能量循环，且所述直流接触网的待融冰区段的电流不小于所述融冰电流值。The ice melting control device is used to calculate the ice melting current value based on the ice thickness of the DC contact network and the environmental conditions, and send an inverter signal to one of the train traction power supply devices corresponding to the ice melting section to make all The four-quadrant converter unit of the train traction power supply device, the ice melting section of the DC contact network, the diode rectification unit of the train traction power supply device adjacent to the ice melting section and the AC power grid corresponding to the ice melting section An energy cycle is formed therebetween, and the current of the ice-to-be-melted section of the DC contact network is not less than the ice-melt current value.
在本发明一实施例中，所述融冰控制装置还用于向所述待融冰区段对应的另一个所述列车牵引供电装置发送整流信号；In an embodiment of the present invention, the ice melting control device is further configured to send a rectification signal to another train traction power supply device corresponding to the ice melting section;
以使处于逆变工况的列车牵引供电装置的四象限变流机组、直流接触网的待融冰区段、处于整流工况的列车牵引供电装置的二极管整流机组和所述待融冰区段对应的交流电网之间形成能量循环，且所述直流接触网的待融冰区段的电流不小于所述融冰电流值。The four-quadrant converter unit of the train traction power supply device in the inverter mode, the ice-to-be-melted section of the DC contact network, the diode rectifier unit of the train traction power supply device in the rectified mode, and the ice-to-be-melted section Energy cycles are formed between the corresponding AC grids, and the current of the ice-to-be-melted section of the DC contact network is not less than the ice-melt current value.
本发明一实施例提供一种列车牵引供电***控制方法，包括：通过直流接触网的覆冰厚度和环境条件计算出融冰电流值；An embodiment of the present invention provides a method for controlling a train traction power supply system, including: calculating an ice melting current value through an ice thickness of a DC contact network and environmental conditions;
向待融冰区段对应的一个所述列车牵引供电装置发送逆变信号，以使所述列车牵引供电装置的四象限变流机组、直流接触网的待融冰区段、所述待融冰区段相邻的列车牵引供电装置的二极管整流机组和所述待融冰区段对应的交流电网之间形成能量循环，且所述直流接触网的待融冰区段的电流不小于所述融冰电流值。Send an inverter signal to one of the train traction power supply devices corresponding to the ice to be melted section, so that the four-quadrant converter unit of the train traction power supply device, the ice to be melted section of the DC contact network, and the ice to be melted An energy cycle is formed between the diode rectifier unit of the traction power supply device of the train adjacent to the section and the AC power grid corresponding to the ice melting section, and the current of the ice melting section of the DC contact network is not less than the ice melting current. value.
在本发明一实施例中，所述向待融冰区段对应的一个所述列车牵引供电装置发送逆变信号之后，还包括：In an embodiment of the present invention, after the sending an inverter signal to one of the train traction power supply devices corresponding to the ice melting section, the method further includes:
向所述待融冰区段对应的另一个所述列车牵引供电装置发送整流信号，以使处于逆变工况的列车牵引供电装置的四象限变流机组、直流接触网的待融冰区段、处于整流工况的列车牵引供电装置的二极管整流机组和所述待融冰区段对应的交流电网之间形成能量循环，且所述直流接触网的待融冰区段的电流不小于所述融冰电流值。Send a rectification signal to another of the train traction power supply device corresponding to the ice to be melted section, so that the four-quadrant converter unit of the train traction power supply device in the inverter operating state and the ice to be melted section of the DC contact network The energy circulation is formed between the diode rectifier unit of the traction power supply device of the train in the rectification condition and the AC power grid corresponding to the ice melting section, and the current of the ice melting section of the DC contact network is not less than the Melting current value.
本发明提供一种列车牵引供电装置、***及控制方法，其中装置包括：二极管整流机组、四象限变流机组、和中央控制器；二极管整流机组、四象限变流机组和中央控制器并联连接交流电网和直流接触网，中央控制器连接四象限变流机组，中央控制器用于根据交流电网的电压、电流和直流接触网的电压调整四象限变流机组的输出电流；列车牵引供电装置处于牵引工况时，二极管整流机组和四象限变流机组将交流电网的交流电转换为直流电向直流接触网输出；列车牵引供电装置处于制动工况时，四象限变流机组将直流接触网的直流电转换为交流电向交流电网输出；列车牵引供电装置处于无功补偿工况时，中央控制器根据交流电网的功率因数控制四象限变流机组对交流电网进行无功补偿；中央控制器还用于接收融冰控制装置发送的包含融冰电流值的逆变指令，并根据逆变指令将列车牵引供电装置切换至逆变工况，以使列车牵引供电装置的四象限变流机组、直流接触网的待融冰区段、待融冰区段相邻的列车牵引供电装置的二极管整流机组和待融冰区段对应的交流电网之间形成能量循环，且直流接触网的待融冰区段的电流不小于融冰电流值。本发明提供的列车牵引供电装置、***及控制方法丰富了列车牵引供电***的功能。具体地，本实施例提供的列车牵引供电装置、***及控制方法能够：The invention provides a train traction power supply device, system and control method, wherein the device includes: a diode rectifier unit, a four-quadrant converter unit, and a central controller; the diode rectifier unit, a four-quadrant converter unit, and a central controller are connected in parallel to exchange AC The central controller is connected to the four-quadrant converter unit of the power grid and the DC contact network. The central controller is used to adjust the output current of the four-quadrant converter unit according to the voltage and current of the AC grid and the voltage of the DC contact network. Under normal conditions, the diode rectifier unit and the four-quadrant converter unit convert the AC power of the AC grid into DC power and output it to the DC contact network. When the train traction power supply device is in a braking condition, the four-quadrant converter unit converts the DC power of the DC contact network into The AC power is output to the AC power grid; when the train traction power supply device is in the reactive power compensation mode, the central controller controls the four-quadrant converter unit to perform reactive power compensation on the AC power grid based on the power factor of the AC power grid; the central controller is also used to receive melting ice The inverse of the value of the melting current sent by the control device Instruction, and switch the train traction power supply device to the inverter mode according to the inverter instruction, so that the four-quadrant converter unit of the train traction power supply device, the to-be-thawed section of the DC contact network, and the adjacent train to-be-thawed section are towed An energy cycle is formed between the diode rectifier unit of the power supply device and the AC power grid corresponding to the ice melting section, and the current of the ice melting section of the DC contact network is not less than the ice melting current value. The train traction power supply device, system and control method provided by the present invention enrich the functions of the train traction power supply system. Specifically, the train traction power supply device, system, and control method provided in this embodiment can:
1、列车牵引供电装置处于牵引工况时，为列车运行提供能量；1. When the train traction power supply device is in the traction mode, it provides energy for train operation;
2、列车牵引供电装置处于制动工况时，能够实现能量的双向传输，将多余的制动能量反馈回交流电网，供其他负载使用，实现节能；2. When the train traction power supply device is in the braking mode, it can realize bidirectional transmission of energy, and feed back the excess braking energy to the AC grid for other loads to save energy;
3、当整个牵引供电***功率因数较低时，列车牵引供电装置处于无功补偿工况，可以补偿无功功率，使功率因数满足要求；3. When the power factor of the entire traction power supply system is low, the traction power supply device of the train is in the reactive power compensation condition, which can compensate the reactive power and make the power factor meet the requirements;
4、当接触网覆冰时，通过控制待融冰区段的两个列车牵引供电装置，使其在交流电网与直流接触网之间形成通路，从而实现了融冰，避免使用了额外的大容量直流可调电源，降低了对交流电网的谐波污染。4. When the contact grid is covered with ice, by controlling the two trains' traction power supply units in the section to be thawed, it forms a path between the AC grid and the DC contact grid, thereby achieving ice melting and avoiding the use of additional The capacity DC adjustable power supply reduces the harmonic pollution to the AC grid.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员 来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to more clearly explain the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without paying creative labor.
图1为本发明列车牵引供电装置的结构示意图；FIG. 1 is a schematic structural diagram of a train traction power supply device of the present invention;
图2为本发明列车牵引供电装置处于牵引工况时的工作原理示意图；FIG. 2 is a schematic diagram of the working principle of the train traction power supply device of the present invention in a traction working condition; FIG.
图3为本发明列车牵引供电装置处于制动工况时的工作原理示意图；3 is a schematic diagram of the working principle of the train traction power supply device of the present invention when it is in a braking mode;
图4为本发明列车牵引供电装置处于无功补偿工况时工作原理示意图；4 is a schematic diagram of the working principle of the train traction power supply device of the present invention in a reactive power compensation mode;
图5为本发明列车牵引供电装置处于逆变工况时的工作原理示意图；5 is a schematic diagram of the working principle of the train traction power supply device of the present invention when it is in an inverter mode;
图6为本发明列车牵引供电装置控制原理示意图；6 is a schematic diagram of a control principle of a train traction power supply device according to the present invention;
图7为本发明列车牵引供电装置二极管整流机组的结构示意图；7 is a schematic structural diagram of a diode rectifier unit of a train traction power supply device of the present invention;
图8为本发明列车牵引供电装置四象限变流机组的结构示意图；8 is a schematic structural diagram of a four-quadrant converter unit of a train traction power supply device according to the present invention;
图9为本发明列车牵引供电***的结构示意图；9 is a schematic structural diagram of a train traction power supply system of the present invention;
图10为本发明列车牵引供电***控制方法实施例一的流程示意图；10 is a schematic flowchart of a first embodiment of a method for controlling a train traction power supply system according to the present invention;
图11为本发明列车牵引供电***控制方法实施例二的流程示意图。FIG. 11 is a schematic flowchart of a second embodiment of a method for controlling a train traction power supply system according to the present invention.
通过上述附图，已示出本公开明确的实施例，后文中将有更详细的描述。这些附图和文字描述并不是为了通过任何方式限制本公开构思的范围，而是通过参考特定实施例为本领域技术人员说明本公开的概念。下面以具体地实施例对本发明的技术方案进行详细说明。下面的实施例可以相互结合，对于相同或相似的概念或过程可能在某些实施例不再赘述。Through the above drawings, a clear embodiment of the present disclosure has been shown, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the concept of the present disclosure in any way, but rather to explain the concepts of the present disclosure to those skilled in the art by referring to specific embodiments. The technical solutions of the present invention will be described in detail in the following specific examples. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.
具体实施方式detailed description
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等(如果存在)是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本发明的实施例例如能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何 变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、***、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。The terms "first", "second", "third", "fourth", and the like (if present) in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects without using Used to describe a specific order or sequence. It should be understood that the data used in this way are interchangeable where appropriate, so that the embodiments of the invention described herein can be implemented in an order other than those illustrated or described herein, for example. Furthermore, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or device that contains a series of steps or units need not be limited to those explicitly listed Those steps or units may instead include other steps or units not explicitly listed or inherent to these processes, methods, products or equipment.
下面以具体地实施例对本发明的技术方案进行详细说明。下面这几个具体的实施例可以相互结合，对于相同或相似的概念或过程可能在某些实施例不再赘述。The technical solutions of the present invention will be described in detail in the following specific examples. The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.
图1为本发明列车牵引供电装置的结构示意图。如图1所示，本发明实施例中提供的列车牵引供电装置包括：二极管整流机组、四象限变流机组、和中央控制器。其中，二极管整流机组、四象限变流机组和中央控制器并联连接交流电网和直流接触网，中央控制器连接四象限变流机组，中央控制器用于根据交流电网的电压、电流和直流接触网的电压调整四象限变流机组的输出电流；列车牵引供电装置处于牵引工况时，二极管整流机组和四象限变流机组将交流电网的交流电转换为直流电向直流接触网输出；列车牵引供电装置处于制动工况时，四象限变流机组将直流接触网的直流电转换为交流电向交流电网输出；列车牵引供电装置处于无功补偿工况时，中央控制器根据交流电网的功率因数控制四象限变流机组对交流电网进行无功补偿；中央控制器还用于接收融冰控制装置发送的包含融冰电流值的逆变指令，并根据逆变指令将列车牵引供电装置切换至逆变工况，以使列车牵引供电装置的四象限变流机组、直流接触网的待融冰区段、待融冰区段相邻的列车牵引供电装置的二极管整流机组和待融冰区段对应的交流电网之间形成能量循环，且直流接触网的待融冰区段的电流不小于融冰电流值。FIG. 1 is a schematic structural diagram of a train traction power supply device of the present invention. As shown in FIG. 1, a train traction power supply device provided in an embodiment of the present invention includes a diode rectifier unit, a four-quadrant converter unit, and a central controller. Among them, the diode rectifier unit, the four-quadrant converter unit and the central controller are connected in parallel to the AC power grid and the DC contact network. The central controller is connected to the four-quadrant converter unit. The central controller is used to The output current of the voltage-adjusted four-quadrant converter unit; when the traction power supply device of the train is in traction mode, the diode rectifier unit and the four-quadrant converter unit convert the AC power of the AC grid into DC power and output it to the DC contact network; During dynamic operating conditions, the four-quadrant converter unit converts the DC power from the DC contact network into AC power and outputs it to the AC grid. When the train traction power supply device is in the reactive power compensation mode, the central controller controls the four-quadrant converter based on the power factor of the AC grid. The unit performs reactive power compensation on the AC grid; the central controller is also used to receive the inverter instruction including the melting current value sent by the ice melting control device, and switch the train traction power supply device to the inverter operating condition according to the inverter instruction to The four-quadrant converter unit of the traction power supply device of the train contacts the DC An energy cycle is formed between the diode rectifier unit of the train traction power supply device adjacent to the train to be thawed, and the AC power grid corresponding to the zone to be thawed, and the current of the zone to be thawed by the DC contact network does not change. Less than the melting current value.
具体地，为了解决现有技术中列车牵引供电***功能较为单一的问题，本实施例中的列车牵引供电装置通过将二极管整流机组和四象限变流机组并联运行，以同时实现牵引供电、列车再生制动能量回馈、无功补偿和接触网融冰的功能。Specifically, in order to solve the problem of relatively single function of the train traction power supply system in the prior art, the train traction power supply device in this embodiment operates a diode rectifier unit and a four-quadrant converter unit in parallel to realize traction power supply and train regeneration at the same time. Brake energy feedback, reactive power compensation, and ice melting on the contact network.
1、图2为本发明列车牵引供电装置处于牵引工况时的工作原理示意图。如图2所示，当列车牵引供电装置附近有列车需要提供动力时，列车牵引处于牵引工况，二极管整流机组和四象限变流机组共同向列车提供能量。其中，二极管整流机组和四象限变流机组将交流电网的交流电转换为 直流电并向直流接触网输出直流电，使得列车通过接入的直流接触网上的直流电获取牵引能量。1. Figure 2 is a schematic diagram of the working principle of the traction power supply device of the train of the present invention when it is in traction mode. As shown in FIG. 2, when a train needs to provide power near a train traction power supply device, the train traction is in a traction mode, and the diode rectifier unit and the four-quadrant converter unit jointly provide energy to the train. Among them, the diode rectifier unit and the four-quadrant converter unit convert the AC power of the AC grid into DC power and output the DC power to the DC contact network, so that the train can obtain traction energy through the DC power connected to the DC contact network.
2、图3为本发明列车牵引供电装置处于制动工况时的工作原理示意图。如图3所示，当列车牵引供电装置附近有列车制动时，列车牵引供电装置开启制动工况，列车的再生制动能量可以通过四象限变流机组回馈到交流电网再利用。其中，四象限变流器机组将直流接触网的直流电转换为交流电向交流电网输出。2. Figure 3 is a schematic diagram of the working principle of the train traction power supply device of the present invention when it is under braking conditions. As shown in Figure 3, when there is a train brake near the train traction power supply device, the train traction power supply device opens the braking mode, and the regenerative braking energy of the train can be fed back to the AC grid for reuse through a four-quadrant converter unit. Among them, the four-quadrant converter unit converts the DC power of the DC contact network into AC power and outputs it to the AC power grid.
3、图4为本发明列车牵引供电装置处于无功补偿工况时工作原理示意图。如图4所示，当列车牵引供电装置所在的供电***的功率因数较低时，可以通过列车供电装置的四象限变流机组补偿无功功率，使得功率因数满足要求。其中，如图4中的列车牵引供电装置通过线路电缆电容产生的无功功率。并且可选地，列车牵引供电装置的中央控制器可以在***处于无功补偿工况时，根据交流电网的功率因数控制四象限变流器对交流电网进行无功补偿。3. FIG. 4 is a schematic diagram of the working principle when the traction power supply device of the train of the present invention is in a reactive power compensation mode. As shown in FIG. 4, when the power factor of the power supply system of the train traction power supply device is low, the reactive power can be compensated by the four-quadrant converter unit of the train power supply device, so that the power factor meets the requirements. Among them, as shown in Figure 4, the train traction power supply device generates reactive power through line cable capacitance. And optionally, the central controller of the traction power supply device of the train can control the four-quadrant converter to perform reactive power compensation on the AC power grid according to the power factor of the AC power grid when the system is in the reactive power compensation mode.
4、图5为本发明列车牵引供电装置处于逆变工况时的工作原理示意图。如图5所示，当列车牵引供电装置附近的直流接触网的线路某一区段需要融冰时，列车牵引供电装置接收到***中融冰控制装置发送的包含融冰电流值的逆变指令后，根据逆变指令将列车牵引供电装置切换至逆变工况，使得该处于逆变工况的列车牵引供电装置的四象限变流机组、直流接触网的待融冰区段、以及待融冰区段相邻的列车牵引供电装置的二极管整流机组和待融冰区段对应的交流电网之间形成能量循环，即如图5中所示的箭头方向的能量循环方向。而中央控制器还控制直流接触网的待融冰区段的电流不小于融冰控制装置发送的融冰电流值。其中可选地，融冰电流值可以是融冰控制装置根据直流接触网上待融冰区段的监控信息，如覆冰厚度和温度、湿度等环境条件的监控信息计算出所需的融冰电流值。4. FIG. 5 is a schematic diagram of the working principle of the train traction power supply device of the present invention when it is in an inverter mode. As shown in Figure 5, when a certain section of the line of the DC contact network near the train traction power supply device needs ice melting, the train traction power supply device receives an inverter instruction including the ice melting current value sent by the ice melting control device in the system Then, according to the inverter instruction, the train traction power supply device is switched to the inverter working condition, so that the four-quadrant converter unit of the train traction power supply device in the inverter working condition, the ice-to-be-melted section of the DC contact network, and the to-be-melted An energy cycle is formed between the diode rectifier unit of the train traction power supply device adjacent to the ice section and the AC power grid corresponding to the ice section to be melted, that is, the direction of the energy cycle shown by the arrow in FIG. 5. The central controller also controls the current of the ice-to-be-melted section of the DC contact network to be not less than the value of the ice-melting current sent by the ice-melting control device. Optionally, the ice melting current value may be the ice melting control device that calculates the required ice melting current based on the monitoring information of the ice to be melted section on the DC contact network, such as the monitoring information of environmental conditions such as ice thickness, temperature, and humidity. value.
进一步地，在上述图5所示的实施例中，处于逆变工况的列车牵引供电装置在待融冰区段相邻的列车牵引供电装置还可以包括整流工况。其中，相邻的列车牵引供电装置除了具备上述工况之外，该列车牵引供电装置的中央控制器还可以接收融冰控制装置发送的包含融冰电流值的整流指令，并根据整流指令将列车牵引供电装置切换至整流工况。从而使得处于逆变 工况的列车牵引供电装置的四象限变流机组、直流接触网的待融冰区段，以及处于整流工况的列车牵引供电装置的二极管整流机组和待融冰区段对应的交流电网之间形成能量循环。并且处于逆变工况的列车牵引供电装置和处于整流工况的列车牵引供电装置之间的待融冰区段的电流不小于融冰控制装置发送的融冰电流值。其中可选地，融冰电流值可以是融冰控制装置根据直流接触网上待融冰区段的覆冰厚度和温度、湿度等环境条件计算出所需的融冰电流值。Further, in the embodiment shown in FIG. 5 above, the train traction power supply device of the train traction power supply device in the inverter mode may further include a rectification mode. Among them, in addition to the above-mentioned working conditions of the adjacent train traction power supply device, the central controller of the train traction power supply device can also receive a rectification instruction including the ice melting current value sent by the ice melting control device, and according to the rectification instruction, the train The traction power supply is switched to the rectification mode. Thereby, the four-quadrant converter unit of the train traction power supply device in the inverter mode, the DC to-be- iced section of the DC contact network, and the diode rectifier unit of the train traction power supply device in the rectified mode correspond to the ice-to-thaw section. An energy cycle is formed between the AC grids. And the current in the ice-to-be-melted section between the train traction power supply device in the inverter mode and the train traction power supply device in the rectification mode is not less than the ice melting current value sent by the ice melting control device. Optionally, the ice melting current value may be a required ice melting current value calculated by the ice melting control device according to the environmental conditions such as the thickness of the ice layer to be melted, the temperature, and the humidity on the DC contact network.
综上，本申请实施例提供的列车牵引供电装置，能够在列车牵引供电装置处于牵引工况时，二极管整流机组和四象限变流机组将交流电网的交流电转换为直流电向直流接触网输出；列车牵引供电装置处于制动工况时，四象限变流机组将直流接触网的直流电转换为交流电向交流电网输出；列车牵引供电装置处于无功补偿工况时，中央控制器根据交流电网的功率因数控制四象限变流机组对交流电网进行无功补偿；中央控制器还用于接收融冰控制装置发送的包含融冰电流值的逆变指令，并根据逆变指令将列车牵引供电装置切换至逆变工况，以使列车牵引供电装置的四象限变流机组、直流接触网的待融冰区段、待融冰区段相邻的列车牵引供电装置的二极管整流机组和待融冰区段对应的交流电网之间形成能量循环，且直流接触网的待融冰区段的电流不小于融冰电流值。从而能够同时实现如下的技术效果：1、列车牵引供电装置处于牵引工况时，为列车运行提供能量；2、列车牵引供电装置处于制动工况时，能够实现能量的双向传输，将多余的制动能量反馈回交流电网，供其他负载使用，实现节能；3、当整个牵引供电***功率因数较低时，列车牵引供电装置处于无功补偿工况，可以补偿无功功率，使功率因数满足要求；4、当接触网覆冰时，通过控制待融冰区段的两个列车牵引供电装置，使其在交流电网与直流接触网之间形成通路，从而实现了融冰，避免使用了额外的大容量直流可调电源，降低了对交流电网的谐波污染。In summary, the train traction power supply device provided in the embodiment of the present application can convert the AC power of the AC power grid to DC power and output the DC power to the DC contact network when the train traction power supply device is in a traction mode. When the traction power supply device is in the braking mode, the four-quadrant converter unit converts the DC power from the DC contact network to AC power and outputs it to the AC power grid. When the traction power supply device of the train is in the reactive power compensation mode, the central controller according to the power factor of the AC power grid Control the four-quadrant converter to perform reactive power compensation on the AC power grid; the central controller is also used to receive the inverter instruction including the ice melting current value sent by the ice melting control device, and switch the train traction power supply device to the inverse according to the inverter instruction Change the working conditions so that the four-quadrant converter unit of the train traction power supply unit, the DC ice contact section of the ice to be melted, the diode rectifier unit of the train traction power supply device adjacent to the ice to be melted section, and the AC corresponding to the ice to be melted section An energy cycle is formed between the power grids, and the current in the ice to-be-melted section of the DC contact network is not less than the melting The current value. Therefore, the following technical effects can be achieved at the same time: 1. When the train traction power supply device is in the traction mode, it provides energy for train operation; 2. When the train traction power supply device is in the brake mode, two-way transmission of energy can be achieved, and the excess The braking energy is fed back to the AC grid for use by other loads to achieve energy saving; 3. When the power factor of the entire traction power supply system is low, the train traction power supply device is in a reactive power compensation condition, which can compensate the reactive power and satisfy the power factor Requirements; 4. When the contact grid is covered with ice, by controlling the two trains' traction power supply units in the section to be thawed, it forms a path between the AC grid and the DC contact grid, thereby achieving ice melting and avoiding the use of additional The large-capacity DC adjustable power supply reduces the harmonic pollution to the AC grid.
进一步地，在上述实施例中，当列车牵引供电装置处于无功补偿工况时，中央控制器具体用于通过交流电网主变电站进线处的无功功率生成无功电流指令，并向列车牵引供电装置的四象限变流机组发送无功电流指令，使得四象限变流机组对交流电网进行无功补偿。例如：在一种实施方式中， 可以理解为，利用四象限变流机组对交流电网的无功补偿，具体实施过程中，可以理解为四象限变流机组零功率因数纯感性运行(等效为蝠值可调的电感)或者零功率因数纯容性运行(等效为幅值可调的电容)，以补偿容性负荷或者感性负荷对交流电网功率因数的影响。可在控制器中写入无功功率补偿的控制逻辑来确定，或者依据预设的量化数据来确定，在此不做限定。Further, in the above embodiment, when the train traction power supply device is in a reactive power compensation mode, the central controller is specifically configured to generate a reactive current instruction through the reactive power at the incoming line of the AC main transformer substation and tow the train The four-quadrant converter unit of the power supply device sends a reactive current command, so that the four-quadrant converter unit performs reactive power compensation on the AC grid. For example, in one embodiment, it can be understood as the use of a four-quadrant converter to compensate the AC grid's reactive power. In the specific implementation process, it can be understood as the zero-factor purely inductive operation of the four-quadrant converter (equivalent to Inductance with adjustable bat value) or purely capacitive operation with zero power factor (equivalent to a capacitor with adjustable amplitude) to compensate for the influence of capacitive load or inductive load on the power factor of the AC grid. The control logic for reactive power compensation can be written in the controller for determination, or determined based on preset quantized data, which is not limited here.
可选地，在上述实施例中，中央控制器对交流电网的主变电站进线处的无功功率和有功功率独立控制。具体地，图6为本发明列车牵引供电装置控制原理示意图。如图6所示的列车牵引供电装置中，四象限变流机组的电流闭环控制方法采用基于同步旋转坐标系的电流解耦控制实现对有功功率和无功功率的独立控制。具体地，通过检测检测交流电压，并对其进行锁相，得到电网电压同步角θ；利用坐标变换将三相电流转换成两相电流id和iq，其中id代表有功电流，iq代表无功电流，以实现对有功功率和无功功率的独立控制；其中有功电流指令的计算是通过检测直流接触网电压，并进行PI闭环控制得到；无功电流指令的计算是通过中央控制器接收来自SCADA根据主变电站进线处的无功功率值计算得到的，计算公式为
Figure PCTCN2018095068-appb-000001
其中Ed为变压器二次侧电压在同步坐标系下的值；将d、q轴PI控制的输出用于调制，产生六路驱动脉冲。 Optionally, in the above embodiment, the central controller independently controls the reactive power and active power at the incoming line of the main substation of the AC grid. Specifically, FIG. 6 is a schematic diagram of the control principle of the train traction power supply device of the present invention. In the train traction power supply device shown in FIG. 6, the current closed-loop control method of the four-quadrant converter unit uses current decoupling control based on a synchronous rotating coordinate system to achieve independent control of active power and reactive power. Specifically, by detecting and detecting the AC voltage and phase-locking it, the grid voltage synchronization angle θ is obtained; coordinate transformation is used to convert the three-phase current into two-phase currents id and iq, where id represents the active current and iq represents the reactive current In order to achieve independent control of active and reactive power; the calculation of the active current command is obtained by detecting the DC contact network voltage and performing PI closed-loop control; the calculation of the reactive current command is received by the central controller from the SCADA based on The reactive power value at the incoming line of the main substation is calculated, and the calculation formula is
Figure PCTCN2018095068-appb-000001
Among them, Ed is the value of the transformer secondary voltage in the synchronous coordinate system; the output of the d and q axis PI control is used for modulation, and six driving pulses are generated.
可选地，在上述各实施例中，二极管整流机组为24脉波二极管整流机组，包括：两台整流变压器和四个二极管整流桥。具体地，图7为本发明列车牵引供电装置二极管整流机组的结构示意图。其中，两个三绕组移相变压器一次绕组为延边三角形连接，分别移相+7.5°和-7.5°；二次侧分别采用星形连接和角型连接；变压器将高压交流电压降低至二极管整流器所需的交流电压；二极管整流器直流侧采用并联的方式联接。二极管整流机组在列车牵引时为其供电，在列车制动时不起作用。Optionally, in the above embodiments, the diode rectifier unit is a 24-pulse diode rectifier unit, which includes: two rectifier transformers and four diode rectifier bridges. Specifically, FIG. 7 is a schematic structural diagram of a diode rectifier unit of a train traction power supply device of the present invention. Among them, the two windings of the three-winding phase-shifting transformer are connected by delta sides of the extended side and phase shifted by + 7.5 ° and -7.5 ° respectively; the secondary side adopts star connection and angle connection respectively; the transformer reduces the high-voltage AC voltage to the diode rectifier. The required AC voltage; the DC side of the diode rectifier is connected in parallel. The diode rectifier unit supplies power to the train when it is being towed, and does not function when the train is braking.
可选地，在上述各实施例中，四象限变流机组包括：双绕组变压器和四象限变流器。具体地，图8为本发明列车牵引供电装置四象限变流机组的结构示意图。其中，其中四象限变流器采用隔离型二重化主电路，即采 用多绕组变压器将各PWM整流器交流侧相互隔离开；变压器一次侧采用星形连接，二次侧均采用三角形连接；变压器将高压交流电压降低至四象限变流器所需的交流电压。Optionally, in each of the foregoing embodiments, the four-quadrant converter unit includes a dual-winding transformer and a four-quadrant converter. Specifically, FIG. 8 is a schematic structural diagram of a four-quadrant converter unit of a train traction power supply device of the present invention. Among them, the four-quadrant converter uses an isolated dual main circuit, that is, a multi-winding transformer is used to isolate the AC sides of the PWM rectifiers from each other; the primary side of the transformer is connected in a star shape, and the secondary side is connected in a delta; the transformer connects the high-voltage AC The voltage is reduced to the AC voltage required by the four-quadrant converter.
图9为本发明列车牵引供电***的结构示意图。如图9所示，本申请实施例提供的列车牵引供电***包括：融冰控制装置和N个如上述实施例中任一项的列车牵引供电装置。其中，N个列车牵引供电装置的中央控制器连接融冰控制装置；融冰控制装置用于通过直流接触网的覆冰厚度和环境条件计算出融冰电流值，并向待融冰区段对应的一个列车牵引供电装置发送逆变信号，以使列车牵引供电装置的四象限变流机组、直流接触网的待融冰区段、待融冰区段相邻的列车牵引供电装置的二极管整流机组和待融冰区段对应的交流电网之间形成能量循环，且直流接触网的待融冰区段的电流不小于融冰电流值。FIG. 9 is a schematic structural diagram of a train traction power supply system of the present invention. As shown in FIG. 9, the train traction power supply system provided by the embodiment of the present application includes: an ice melting control device and N train traction power supply devices as in any of the above embodiments. Among them, the central controller of the traction power supply device of N trains is connected to the ice melting control device; the ice melting control device is used to calculate the ice melting current value through the ice thickness and environmental conditions of the DC contact network, and corresponding to the ice melting section A train traction power supply device sends an inverter signal to enable the four-quadrant converter unit of the train traction power supply device, the ice to-be-melted section of the DC contact network, the diode rectifier unit of the train traction power supply device adjacent to the ice-to-thaw section, and the An energy cycle is formed between the AC grids corresponding to the ice melting section, and the current of the ice to be melted section of the DC contact network is not less than the current value of the ice melting.
具体地，当列车牵引供电***内直流接触网的线路某一区段需要融冰时，融冰控制装置根据直流接触网上待融冰区段的监控信息，如覆冰厚度和温度、湿度等环境条件的监控信息计算出所需的融冰电流值。融冰控制装置向待融冰区段旁、如图9所示的任意一个列车牵引供电装置的中央控制器发送包含融冰电流值的逆变指令，并使得接收到逆变指令的列车供电装置，根据逆变指令将列车牵引供电装置切换至逆变工况，使得该处于逆变工况的列车牵引供电装置的四象限变流机组、直流接触网的待融冰区段、以及待融冰区段相邻的列车牵引供电装置的二极管整流机组和待融冰区段对应的交流电网之间形成能量循环，即形成如图5中所示的箭头方向的能量循环方向。而接收到逆变指令的列车供电装置的中央控制器还控制直流接触网的待融冰区段的电流不小于融冰控制装置发送的融冰电流值。Specifically, when a certain section of the DC contact network line in the train traction power supply system needs to melt ice, the ice melting control device is based on the monitoring information of the DC to-be-melted section on the DC contact network, such as the ice thickness, temperature, and humidity. The condition monitoring information calculates the required value of the ice melting current. The ice melting control device sends an inverter instruction including the ice melting current value to the central controller of any train traction power supply device beside the ice to be melted section, and makes the train power supply device receiving the inverter instruction , According to the inverter instruction, the train traction power supply device is switched to the inverter mode, so that the four-quadrant converter unit of the train traction power supply device in the inverter mode, the ice-to-be-melted section of the DC contact network, and the ice-to-be-melted An energy cycle is formed between the diode rectifier unit of the train traction power supply device adjacent to the section and the AC grid corresponding to the section to be thawed, that is, the energy cycle direction in the direction of the arrow shown in FIG. 5 is formed. The central controller of the train power supply device that receives the inverter instruction also controls the current of the ice-to-be-melted section of the DC contact network to be not less than the ice-melt current value sent by the ice-melt control device.
进一步地，在上述实施例中，融冰控制装置除了向任意一个列车牵引供电装置的中央控制器发送包含融冰电流值的逆变指令外，还向待融冰区段处于逆变工况的列车牵引供电装置相邻的、处于待融冰区段另一侧的列车牵引供电装置发送包含融冰电流值的整流指令。使得接收到整流指令的列车牵引供电装置根据整流指令将列车牵引供电装置切换至整流工况。Further, in the above embodiment, the ice melting control device sends an inverter instruction including the ice melting current value to the central controller of any train traction power supply device, and also sends the ice melting section to the inverter in an inverter working condition. The train traction power supply device adjacent to the train traction power supply device and located on the other side of the section to be thawed by ice sends a rectification instruction containing the current value of thawing. The train traction power supply device that receives the rectification instruction switches the train traction power supply device to a rectification mode according to the rectification instruction.
从而通过处于逆变工况和整流工况的两个列车牵引供电装置，共同使得处于逆变工况的列车牵引供电装置的四象限变流机组、直流接触网的待 融冰区段，以及处于整流工况的列车牵引供电装置的二极管整流机组和待融冰区段对应的交流电网之间形成能量循环。并且处于逆变工况的列车牵引供电装置和处于整流工况的列车牵引供电装置之间的待融冰区段的电流不小于融冰控制装置发送的融冰电流值。Therefore, through the two train traction power supply devices in the inverter mode and the rectification mode, the four-quadrant converter unit of the train traction power supply device in the inverter mode, the ice-to-be-separated section of the DC contact network, and An energy cycle is formed between the diode rectifier unit of the traction power supply device of the train in the rectification condition and the AC power grid corresponding to the section to be thawed. And the current in the ice-to-be-melted section between the train traction power supply device in the inverter mode and the train traction power supply device in the rectification mode is not less than the ice melting current value sent by the ice melting control device.
图10为本发明列车牵引供电***控制方法实施例一的流程示意图。如图10所示，本实施例提供的列车牵引供电***控制方法包括：FIG. 10 is a schematic flowchart of a first embodiment of a method for controlling a train traction power supply system according to the present invention. As shown in FIG. 10, the method for controlling a train traction power supply system provided in this embodiment includes:
S1001：通过直流接触网的覆冰厚度和环境条件计算出融冰电流值。S1001: Calculate the melting current value based on the ice thickness and environmental conditions of the DC contact grid.
S1002：向待融冰区段对应的一个所述列车牵引供电装置发送逆变信号，以使所述列车牵引供电装置的四象限变流机组、直流接触网的待融冰区段、所述待融冰区段相邻的列车牵引供电装置的二极管整流机组和所述待融冰区段对应的交流电网之间形成能量循环，且所述直流接触网的待融冰区段的电流不小于所述融冰电流值。S1002: Send an inverter signal to one of the train traction power supply devices corresponding to the ice to be melted section, so that the four-quadrant converter unit of the train traction power supply device, the ice to be melted section of the DC contact network, the An energy cycle is formed between the diode rectifier unit of the train traction power supply device adjacent to the ice melting section and the AC grid corresponding to the ice melting section, and the current of the ice melting section of the DC contact network is not less than the melting Ice current value.
本实施例提供的列车牵引供电***控制方法用于在图9所示的列车牵引供电***中执行，其实现方式与原理相同，可参照前述实施例，不再赘述。The control method of the train traction power supply system provided in this embodiment is used to execute in the train traction power supply system shown in FIG. 9. The implementation method and the principle thereof are the same, and reference may be made to the foregoing embodiment, and details are not described herein again.
进一步地，图11为本发明列车牵引供电***控制方法实施例二的流程示意图。图11所示的实施例在图10所示的实施例基础上，S1002之后还包括：Further, FIG. 11 is a schematic flowchart of a second embodiment of a method for controlling a train traction power supply system according to the present invention. The embodiment shown in FIG. 11 is based on the embodiment shown in FIG. 10, and after S1002, it further includes:
S1003：向所述待融冰区段对应的另一个所述列车牵引供电装置发送整流信号，以使处于逆变工况的列车牵引供电装置的四象限变流机组、直流接触网的待融冰区段、处于整流工况的列车牵引供电装置的二极管整流机组和所述待融冰区段对应的交流电网之间形成能量循环，且所述直流接触网的待融冰区段的电流不小于所述融冰电流值。S1003: Send a rectification signal to another of the train traction power supply device corresponding to the ice to be melted section, so that the four-quadrant converter unit of the train traction power supply device in the inverter operating state and the DC contact network are to be thawed. Energy cycle is formed between the section, the diode rectifier unit of the train traction power supply device in the rectifying condition and the AC power grid corresponding to the ice to be melted section, and the current of the ice to be melted section of the DC contact network is not less than The ice melting current value.
本实施例提供的列车牵引供电***控制方法用于在图9所示的列车牵引供电***中执行，其实现方式与原理相同，可参照前述实施例，不再赘述。The control method of the train traction power supply system provided in this embodiment is used to execute in the train traction power supply system shown in FIG. 9, and the implementation manner and the principle thereof are the same. For details, reference may be made to the foregoing embodiments.
发明一实施例还提供一种电子设备，包括：An embodiment of the invention also provides an electronic device, including:
处理器；以及，存储器，用于存储处理器的可执行指令；A processor; and a memory for storing executable instructions of the processor;
其中，处理器配置为经由执行可执行指令来执行上述任一项实施例中的列车牵引供电***控制方法。The processor is configured to execute the method for controlling a train traction power supply system in any one of the foregoing embodiments by executing executable instructions.
本发明一实施例还提供一种存储介质，包括：可读存储介质和计算机程序，所述计算机程序存储在可读存储介质上，所述计算机程序用于实现上述各实施例中所述的列车牵引供电***控制方法。An embodiment of the present invention further provides a storage medium including a readable storage medium and a computer program stored on the readable storage medium, and the computer program is configured to implement the train described in the foregoing embodiments. Control method of traction power supply system.
本发明一实施例还提供一种程序产品，该程序产品包括：An embodiment of the present invention also provides a program product. The program product includes:
计算机程序(即执行指令)，该计算机程序存储在可读存储介质中。编码设备的至少一个处理器可以从可读存储介质读取该计算机程序，至少一个处理器执行该计算机程序使得编码设备实施前述的各种实施方式提供的列车牵引供电***控制方法。A computer program (ie, executing instructions) stored in a readable storage medium. At least one processor of the encoding device may read the computer program from a readable storage medium, and the at least one processor executes the computer program to cause the encoding device to implement the method for controlling a train traction power supply system provided by the foregoing various embodiments.
本领域普通技术人员可以理解：实现上述各方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成。前述的程序可以存储于一计算机可读取存储介质中。该程序在执行时，执行包括上述各方法实施例的步骤；而前述的存储介质包括：ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。A person of ordinary skill in the art may understand that all or part of the steps of implementing the foregoing method embodiments may be implemented by a program instructing related hardware. The aforementioned program may be stored in a computer-readable storage medium. When the program is executed, the steps including the foregoing method embodiments are performed; and the foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disc.
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, but not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features can be equivalently replaced; and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present invention. range.

Claims (10)

  1. 一种列车牵引供电装置，其特征在于，包括：二极管整流机组、四象限变流机组和中央控制器；A traction power supply device for a train, which is characterized by comprising: a diode rectifier unit, a four-quadrant converter unit and a central controller;
    所述二极管整流机组、所述四象限变流机组和所述中央控制器并联连接交流电网和直流接触网，所述中央控制器连接所述四象限变流机组，所述中央控制器用于根据所述交流电网的电压、电流和所述直流接触网的电压调整所述四象限变流机组的输出电流；The diode rectifier unit, the four-quadrant converter unit and the central controller are connected in parallel to an AC power grid and a DC contact network. The central controller is connected to the four-quadrant converter unit. The voltage and current of the AC grid and the voltage of the DC contact grid adjust the output current of the four-quadrant converter unit;
    所述列车牵引供电装置处于牵引工况时，所述二极管整流机组和所述四象限变流机组将所述交流电网的交流电转换为直流电向所述直流接触网输出；When the train traction power supply device is in a traction mode, the diode rectifier unit and the four-quadrant converter unit convert the AC power of the AC grid into DC power and output the DC power to the DC contact network;
    所述列车牵引供电装置处于制动工况时，所述四象限变流机组将所述直流接触网的直流电转换为交流电向所述交流电网输出；When the train traction power supply device is in a braking condition, the four-quadrant converter unit converts the DC power of the DC contact network into AC power and outputs the AC power to the AC power grid;
    所述列车牵引供电装置处于无功补偿工况时，所述中央控制器根据所述交流电网的功率因数控制所述四象限变流机组对所述交流电网进行无功补偿；When the train traction power supply device is in a reactive power compensation mode, the central controller controls the four-quadrant converter unit to perform reactive power compensation on the AC power grid according to the power factor of the AC power grid;
    所述中央控制器还用于接收融冰控制装置发送的包含融冰电流值的逆变指令，并根据所述逆变指令将所述列车牵引供电装置切换至逆变工况，以使所述列车牵引供电装置的四象限变流机组、直流接触网的待融冰区段、所述待融冰区段相邻的列车牵引供电装置的二极管整流机组和所述待融冰区段对应的交流电网之间形成能量循环，且所述直流接触网的待融冰区段的电流不小于所述融冰电流值。The central controller is further configured to receive an inverter instruction including an ice melting current value sent by the ice melting control device, and switch the train traction power supply device to an inverter working state according to the inverter instruction, so that the train The four-quadrant converter unit of the train traction power supply device, the ice-to-be-melted section of the DC contact network, the diode rectifier unit of the train traction power supply device adjacent to the ice-to-be-melted section, and the AC grid corresponding to the ice-to-be-melted section. An energy cycle is formed therebetween, and the current in the ice-to-be-melted section of the DC contact network is not less than the ice-melt current value.
  2. 根据权利要求1所述的装置，其特征在于，The device according to claim 1, wherein:
    所述中央控制器还用于接收融冰控制装置发送的包含融冰电流值的整流指令，并根据所述整流指令将所述列车牵引供电装置切换至整流工况；The central controller is further configured to receive a rectification instruction including an ice melting current value sent by the ice melting control device, and switch the train traction power supply device to a rectification mode according to the rectification instruction;
    以使处于逆变工况的列车牵引供电装置的四象限变流机组、直流接触网的待融冰区段、处于整流工况的列车牵引供电装置的二极管整流机组和所述待融冰区段对应的交流电网之间形成能量循环，且所述直流接触网的待融冰区段的电流不小于所述融冰电流值。The four-quadrant converter unit of the train traction power supply device in the inverter mode, the ice-to-be-melted section of the DC contact network, the diode rectifier unit of the train traction power supply device in the rectified mode, and the ice-to-be-melted section Energy cycles are formed between the corresponding AC grids, and the current of the ice-to-be-melted section of the DC contact network is not less than the ice-melt current value.
  3. 根据权利要求1或2所述的装置，其特征在于，The device according to claim 1 or 2, wherein:
    所述列车牵引供电装置处于无功补偿工况时，所述中央控制器具体用于，通过所述交流电网的主变电站进线处的无功功率生成无功电流指令，向所述四象限变流机组发送所述无功电流指令，以使所述四象限变流机组对所述交 流电网进行无功补偿。When the train traction power supply device is in a reactive power compensation mode, the central controller is specifically configured to generate a reactive current command from the reactive power at the incoming line of the main transformer substation of the AC power grid to change to the four quadrant The current generating unit sends the reactive current command to enable the four-quadrant converter unit to perform reactive power compensation on the AC power grid.
  4. 根据权利要求3所述的装置，其特征在于，The device according to claim 3, wherein:
    所述中央控制器对所述交流电网的主变电站进线处的无功功率和有功功率独立控制。The central controller independently controls reactive power and active power at the incoming line of the main substation of the AC grid.
  5. 根据权利要求3所述的装置，其特征在于，The device according to claim 3, wherein:
    所述二极管整流机组为24脉波二极管整流机组，包括：两台整流变压器和四个二极管整流桥。The diode rectifier unit is a 24-pulse diode rectifier unit, including: two rectifier transformers and four diode rectifier bridges.
  6. 根据权利要求3所述的装置，其特征在于，The device according to claim 3, wherein:
    所述四象限变流机组包括：双绕组变压器和四象限变流器。The four-quadrant converter unit includes a dual-winding transformer and a four-quadrant converter.
  7. 一种列车牵引供电***，其特征在于，包括：融冰控制装置和N个如权利要求1-6任一项所述的列车牵引供电装置；A train traction power supply system, comprising: an ice melting control device and N train traction power supply devices according to any one of claims 1-6;
    所述N个列车牵引供电装置的中央控制器连接所述融冰控制装置；The central controllers of the N train traction power supply devices are connected to the ice melting control device;
    所述融冰控制装置用于通过直流接触网的覆冰厚度和环境条件计算出融冰电流值，并向待融冰区段对应的一个所述列车牵引供电装置发送逆变信号，以使所述列车牵引供电装置的四象限变流机组、直流接触网的待融冰区段、所述待融冰区段相邻的列车牵引供电装置的二极管整流机组和所述待融冰区段对应的交流电网之间形成能量循环，且所述直流接触网的待融冰区段的电流不小于所述融冰电流值。The ice melting control device is used to calculate the ice melting current value based on the ice thickness of the DC contact network and the environmental conditions, and send an inverter signal to one of the train traction power supply devices corresponding to the ice melting section to make all The four-quadrant converter unit of the train traction power supply device, the ice melting section of the DC contact network, the diode rectification unit of the train traction power supply device adjacent to the ice melting section and the AC power grid corresponding to the ice melting section An energy cycle is formed therebetween, and the current of the ice-to-be-melted section of the DC contact network is not less than the ice-melt current value.
  8. 根据权利要求7所述的***，其特征在于，The system according to claim 7, wherein:
    所述融冰控制装置还用于向所述待融冰区段对应的另一个所述列车牵引供电装置发送整流信号；The ice melting control device is further configured to send a rectification signal to another train traction power supply device corresponding to the ice melting section;
    以使处于逆变工况的列车牵引供电装置的四象限变流机组、直流接触网的待融冰区段、处于整流工况的列车牵引供电装置的二极管整流机组和所述待融冰区段对应的交流电网之间形成能量循环，且所述直流接触网的待融冰区段的电流不小于所述融冰电流值。The four-quadrant converter unit of the train traction power supply device in the inverter mode, the ice-to-be-melted section of the DC contact network, the diode rectifier unit of the train traction power supply device in the rectified mode, and the ice-to-be-melted section Energy cycles are formed between the corresponding AC grids, and the current of the ice-to-be-melted section of the DC contact network is not less than the ice-melt current value.
  9. 一种列车牵引供电***控制方法，其特征在于，包括：A control method for a train traction power supply system, which is characterized by comprising:
    通过直流接触网的覆冰厚度和环境条件计算出融冰电流值；Calculate the ice melting current value based on the ice thickness and environmental conditions of the DC contact network;
    向待融冰区段对应的一个所述列车牵引供电装置发送逆变信号，以使所述列车牵引供电装置的四象限变流机组、直流接触网的待融冰区段、所述待融冰区段相邻的列车牵引供电装置的二极管整流机组和所述待融冰区段对 应的交流电网之间形成能量循环，且所述直流接触网的待融冰区段的电流不小于所述融冰电流值。Send an inverter signal to one of the train traction power supply devices corresponding to the ice to be melted section, so that the four-quadrant converter unit of the train traction power supply device, the ice to be melted section of the DC contact network, and the ice to be melted An energy cycle is formed between the diode rectifier unit of the traction power supply device of the train adjacent to the section and the AC power grid corresponding to the ice melting section, and the current of the ice melting section of the DC contact network is not less than the ice melting current. value.
  10. 根据权利要求9所述的方法，其特征在于，所述向待融冰区段对应的一个所述列车牵引供电装置发送逆变信号之后，还包括：The method according to claim 9, wherein after sending an inverter signal to one of the train traction power supply devices corresponding to the ice melting section, the method further comprises:
    向所述待融冰区段对应的另一个所述列车牵引供电装置发送整流信号，以使处于逆变工况的列车牵引供电装置的四象限变流机组、直流接触网的待融冰区段、处于整流工况的列车牵引供电装置的二极管整流机组和所述待融冰区段对应的交流电网之间形成能量循环，且所述直流接触网的待融冰区段的电流不小于所述融冰电流值。Send a rectification signal to another of the train traction power supply device corresponding to the ice to be melted section, so that the four-quadrant converter unit of the train traction power supply device in the inverter operating state and the ice to be melted section of the DC contact network The energy circulation is formed between the diode rectifier unit of the traction power supply device of the train in the rectification condition and the AC power grid corresponding to the ice melting section, and the current of the ice melting section of the DC contact network is not less than the Melting current value.
PCT/CN2018/095068 2018-07-10 2018-07-10 Train traction power supply device and system, and control method WO2020010499A1 (en)

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