CN107380187B - Rail traffic regenerating braking energy comprehensive recycling device and method - Google Patents

Rail traffic regenerating braking energy comprehensive recycling device and method Download PDF

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Publication number
CN107380187B
CN107380187B CN201611062465.5A CN201611062465A CN107380187B CN 107380187 B CN107380187 B CN 107380187B CN 201611062465 A CN201611062465 A CN 201611062465A CN 107380187 B CN107380187 B CN 107380187B
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China
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voltage
bus
energy storage
value
traction networks
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CN201611062465.5A
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Chinese (zh)
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CN107380187A (en
Inventor
赵思锋
唐英伟
温海平
李胜飞
朱文元
米海涛
张建平
于金龙
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盾石磁能科技有限责任公司
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Publication of CN107380187A publication Critical patent/CN107380187A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61DBODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D43/00Devices for using the energy of the movements of the vehicles
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28Arrangements for balancing of the load in a network by storage of energy
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T30/00Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance

Abstract

The present invention relates to a kind of rail traffic regenerating braking energy comprehensive recycling device and methods.The device is provided with alternating voltage detection module, DC voltage detection module, logic control element, flywheel energy storage system and inverter, flywheel energy storage system makes the movement that electric energy is provided or absorbed to Traction networks DC bus according to the height and itself SOC value state of Traction networks d-c bus voltage value;The soc state of the height and flywheel of inverter combination Traction networks d-c bus voltage value, determine whether that absorbing Traction networks DC bus-bar voltage is fed back to low-voltage alternating-current power supply network if inverter feedback power is relatively small, if inverter feedback power is relatively large, it is fed back to power distribution network.The invention avoids cause grid power quality to decline after using inversion feedback device, characteristic is continued working in conjunction with flywheel energy storage system limitless volumes, the portion of energy that can not be absorbed after the full electricity of flywheel energy storage system is absorbed, avoids rail transit train regeneration from ceasing to be in force automatically, energy conservation is obvious.

Description

Rail traffic regenerating braking energy comprehensive recycling device and method
Technical field
The present invention relates to a kind of rail traffic regenerating braking energy comprehensive recycling device and methods, belong to rail traffic Systematic energy-saving technology field.
Background technique
The braking energy of field of track traffic train accounts for about the 20%~50% of train operation haulage capacity.It is removed in braking energy Part is outer by the absorption of adjacent vehicle, absorbs remaining regenerating braking energy using braking resistor in early days, so just wastes energy, And the temperature rise that resistance energy consumption generates will improve tunnel temperature, increase the load of environmental control system in subway, middle at present to press inversion Product technology tends to be mature and stable, and domestic a plurality of subway line is just in linked network application.Middle pressure inversion products generate train again Again inversion feeds back to AC network to raw braking energy, uses for loads other on route, program energy conservation, still, recycling Energy may not be all absorbed and utilized by subway system, fail to embody direct economic benefit, and inverse in the future as middle pressure The more large-scale application for selling of one's property product, the voltage signal generated by electrical modulation mode will be containing more harmonic components, to electricity The stable operation of net has adverse effect on.Energy accumulation device for fly wheel has powerful energy stores and releasability, charge and discharge Number is up to thousands of times, and the train regenerating braking energy of capture can be directly used in driving train operation by long service life, section Can effect it is obvious, but the stored energy capacitance of separate unit flywheel energy storage system is relatively low, and inversion feedback device price is relatively at present It is low, but inversion feedback device individually largely uses, and can generate interference to the power quality of power grid.
CN201310179540 discloses a kind of city railway train regenerating braking energy and system and method is absorbed and utilized, The action logic of energy-storage units and inverter changes only in accordance with the height of d-c bus voltage value, but in actual metro traction In system operation, the height variation of DC bus-bar voltage is by two kinds of factors compositions, the voltage fluctuation of 1 exchange side power supply network, 2 trains Rise braking.For only by exchanging the voltage fluctuation of side power supply network, the fluctuation generated after uncontrollable rectifier diode is straight Busbar voltage is flowed, it, should not be to metro traction net self-energy due to being not that DC bus-bar voltage caused by train plays braking fluctuates It is absorbed and released, to avoid energy waste, energy-storage units and inverter should not generate movement.Therefore, according only to The height of DC bus-bar voltage determines the action logic of energy-storage units and inverter, cannot achieve correct action logic.
Summary of the invention
Present invention seek to address that the above problem, and a kind of rail traffic regenerating braking energy comprehensive recycling device is provided And method, the method for using while detecting the voltage and DC bus supply conductor voltage of exchange side power supply network can determine ground The reason of railway traction net DC bus-bar voltage fluctuates, so that energy-storage units and inverter make correct action logic, reaches Energy conservation and the purpose for stablizing Traction networks busbar voltage.
The technical solution used to solve the technical problems of the present invention is that:
A kind of rail traffic regenerating braking energy comprehensive recycling device, including 10/35KV Alternating Current Power Supply net, 750VDC/1500VDC Traction networks DC bus, energy-storage units, inverter, 10/35KV Alternating Current Power Supply Netcom cross tractive transformer, Diode rectifier is electrically connected with 750VDC/1500VDC Traction networks DC bus;
It further include a logic control element;
DC voltage detection module is set between 750VDC/1500VDC Traction networks DC bus and logic control element, directly It flows voltage detection module and detects 750VDC/1500VDC Traction networks d-c bus voltage value, be 0~5VDC voltage letter by its pick-up Number U1 is sent to logic control element;
Alternating voltage detection module, alternating voltage detection are set between 10/35KV Alternating Current Power Supply net and logic control element Module acquires 10KV/35KV Alternating Current Power Supply net voltage value, and is obtained according to the rectification proportionality coefficient of uncontrollable diode rectifier circuit It is then that 0~5VDC voltage signal U2 is sent to logic control list by its pick-up to the floating voltage value of Traction networks DC bus Member;
Energy-storage units are flywheel energy storage system, and flywheel energy storage system drives cabinet control unit to access 750VDC/ by it 1500VDC Traction networks DC bus, driving cabinet control unit receive deviation the DC voltage U, U=U1- of logic control element transmission U2;Driving cabinet control unit made decisions according to U value size and itself SOC value state, to flywheel energy storage system flywheel with The inverter of access 750VDC/1500VDC Traction networks DC bus issues different control instructions;
All the way to low-voltage alternating-current power supply network, another way passes through grid-connected switch, step-up transformer to 10/ for the output of inverter 35KV Alternating Current Power Supply net.
A kind of rail traffic regenerating braking energy comprehensive reutilization method based on above-mentioned apparatus, specifically:
Flywheel energy storage system is according to the height and itself SOC value of 750VDC/1500VDC Traction networks d-c bus voltage value State makes the movement that electric energy is provided or absorbed to 750VDC/1500VDC Traction networks DC bus, and there are three types of operating modes: filling Power mode maintains mode, discharge mode;
The soc state of the height and flywheel of inverter combination 750VDC/1500VDC Traction networks d-c bus voltage value, really It is fixed whether to absorb Traction networks DC bus-bar voltage, if inverter feedback power is relatively small, it is fed back to low-voltage alternating-current power supply network, If inverter feedback power is relatively large, 10/35KV Alternating Current Power Supply net is fed back to by grid-connected switch, step-up transformer.
The present invention by adopting the above technical scheme, compared with prior art, the beneficial effect is that:
Recycling of the train regenerating braking energy inside subway train is realized using the charge-discharge characteristic of flywheel energy storage system It recycles, energy is fed back to the mode of Alternating Current Power Supply power grid compared to inversion feedback device, energy conservation is obvious, avoids largely using The decline of grid power quality is caused after inversion feedback device, while combining flywheel energy storage system limitless volumes to continue working again Characteristic absorbs the portion of energy that can not be absorbed after the full electricity of flywheel energy storage system, avoids rail transit train regeneration from ceasing to be in force automatically, together When reduce the cost of entire project.
Detailed description of the invention
Fig. 1 is the apparatus structure schematic diagram of the embodiment of the present invention;
Fig. 2 is the charge and discharge control schematic diagram of flywheel energy storage system;
Fig. 3 is work flow diagram.
Specific embodiment
With reference to the accompanying drawing, by embodiment, the present invention will be further described.
Referring to Fig. 1, a kind of rail traffic regenerating braking energy comprehensive recycling device, by 10/35KV Alternating Current Power Supply net, Alternating voltage detection module, 750VDC/1500VDC Traction networks DC bus, DC voltage detection module, tractive transformer, two Pole pipe rectifier, logic control element, flywheel energy storage system, inverter, grid-connected switch, step-up transformer, low-voltage alternating-current power supply Tractive transformer, diode rectifier and 750VDC/1500VDC Traction networks direct current are crossed by net composition, 10/35KV Alternating Current Power Supply Netcom Bus electrical connection, provides energy for Traction networks DC bus.
DC voltage detection module is set between 750VDC/1500VDC Traction networks DC bus and logic control element, directly It flows voltage detection module and detects 750VDC/1500VDC Traction networks d-c bus voltage value, be 0~5VDC voltage letter by its pick-up Number U1 is sent to logic control element.
Alternating voltage detection module, alternating voltage detection are set between 10/35KV Alternating Current Power Supply net and logic control element Module acquires 10KV/35KV Alternating Current Power Supply net voltage value, and is obtained according to the rectification proportionality coefficient of uncontrollable diode rectifier circuit It is then that 0~5VDC voltage signal U2 is sent to logic control list by its pick-up to the floating voltage value of Traction networks DC bus Member.
Flywheel energy storage system model GTR200 is electromechanical integrated product, including flywheel section, driving cabinet control list Member, flywheel section are Purely mechanical energy storage, are integrated with synchronous permanent-magnet motor/generator amature;Flywheel energy storage system passes through It drives cabinet control unit to access 750VDC/1500VDC Traction networks DC bus, and driving cabinet control unit receives logic control list Deviation the DC voltage U, U=U1-U2 of member transmission;Driving cabinet control unit is made according to U value size and itself SOC value state Decision issues different control instructions to flywheel and inverter.
Inverter accesses 750VDC/1500VDC Traction networks DC bus, and the output of inverter is powered to low-voltage alternating-current all the way Net, another way pass through grid-connected switch, step-up transformer to 10/35KV Alternating Current Power Supply net.
Referring to fig. 2, Fig. 3, the rail traffic regenerating braking energy comprehensive reutilization method of above-mentioned apparatus, specifically:
Metro traction net d-c bus voltage value is detected using DC voltage detection module, is 0~5VDC letter by its pick-up Number value, using alternating voltage detection module acquire Alternating Current Power Supply network voltage value, and in proportion transformation of coefficient be mean direct electricity Its pick-up is then 0~5VDC signal value by pressure value;Mean direct voltage is subtracted using metro traction net DC bus-bar voltage, Obtained difference is defined as deviation DC voltage U.
Flywheel energy storage system is according to the height and itself SOC value of 750VDC/1500VDC Traction networks d-c bus voltage value State makes the movement that electric energy is provided or absorbed to 750VDC/1500VDC Traction networks DC bus, and there are three types of operating modes: filling Power mode;Maintenance mode;Discharge mode.
When deviation DC voltage U is located in the section [- Ua, Ua], flywheel energy storage system, which is in, maintains operation mode, with 1% function Rate charge and discharge make flywheel maintain the state of SOC=0.5, and inversion feedback device does not work.
When deviation DC voltage U is located at [- Ua,-Ub] in section, subway train, which is in, accelerates starting state, flywheel energy storage system System executes discharge operation mode, and discharge power increases with the increase of deviation DC voltage U, when U is located at [- Ub,-Uc] when, with The increase of deviation DC voltage U, with 100% power output, discharge process continues to the SOC of flywheel energy storage system discharge power Value is 0, and inversion feedback device does not work.
When deviation DC voltage U is located at [Ua, Ub] in section, subway train is in retarding braking state, if flywheel energy storage system System SOC < 1, flywheel energy storage system is in charging operations mode, and charge power increases with the increase of deviation DC voltage U, when U is located at [Ub, Uc] when, with the increase of deviation DC voltage U, charge power is with 100% power output, constantly monitoring during this period The SOC value of flywheel energy storage system, as SOC=1, if deviation DC voltage U is still located at [Ua, Uc] in section, then start inverter, If inverter feedback power is relatively small, it is fed back to low-voltage alternating-current power supply network, if inverter feedback power is relatively large, is led to Grid-connected switch is crossed, step-up transformer is fed back to 10KV/35KV Alternating Current Power Supply net, by extra regenerating braking energy inversion to exchange Power supply grid.
Above-described embodiment is only to give an example to the present invention.Those skilled in the art can be right Described specific embodiment does various modifications or additions or is substituted in a similar manner, but without departing from this hair Bright spirit or beyond the scope defined by the appended claims.

Claims (1)

1. a kind of rail traffic regenerating braking energy comprehensive reutilization method, it is characterised in that:
It is female that tractive transformer, diode rectifier and 750VDC/1500VDC Traction networks direct current are crossed by 10/35KV Alternating Current Power Supply Netcom Line electrical connection, provides energy for Traction networks DC bus;
DC voltage detection module, direct current are set between 750VDC/1500VDC Traction networks DC bus and logic control element It presses detection module to detect 750VDC/1500VDC Traction networks d-c bus voltage value, is 0~5VDC voltage signal U1 by its pick-up It is sent to logic control element;
Alternating voltage detection module, alternating voltage detection module are set between 10/35KV Alternating Current Power Supply net and logic control element 10KV/35KV Alternating Current Power Supply net voltage value is acquired, and is led according to the rectification proportionality coefficient of uncontrollable diode rectifier circuit Draw the floating voltage value of net DC bus, is then that 0~5VDC voltage signal U2 is sent to logic control element by its pick-up;
Flywheel energy storage system drives cabinet control unit to access 750VDC/1500VDC Traction networks DC bus by it, drives cabinet control Unit processed receives deviation the DC voltage U, U=U1-U2 of logic control element transmission;Drive cabinet control unit according to U value size with And itself SOC value state makes decisions, and different control instructions is issued to flywheel and inverter;
Inverter accesses 750VDC/1500VDC Traction networks DC bus, the output of inverter all the way to low-voltage alternating-current power supply network, Another way passes through grid-connected switch, step-up transformer to 10/35KV Alternating Current Power Supply net;
It is specific:
Metro traction net d-c bus voltage value is detected using DC voltage detection module, is 0~5VDC signal value by its pick-up; Alternating Current Power Supply network voltage value is acquired using alternating voltage detection module, and transformation of coefficient is mean direct voltage value in proportion, It is then 0~5VDC signal value by its pick-up;Mean direct voltage is subtracted using metro traction net DC bus-bar voltage, is obtained Difference is defined as deviation DC voltage U;
Flywheel energy storage system according to the height and itself SOC state of value of 750VDC/1500VDC Traction networks d-c bus voltage value, The movement that electric energy is provided or absorbed to 750VDC/1500VDC Traction networks DC bus is made, there are three types of operating modes: charging mould Formula maintains mode, discharge mode;
When deviation DC voltage U is located in the section [- Ua, Ua], flywheel energy storage system, which is in, maintains operation mode, is filled with 1% power Electric discharge makes flywheel maintain the state of SOC=0.5, and inversion feedback device does not work;
When deviation DC voltage U is located at [- Ua,-Ub] in section, subway train, which is in, accelerates starting state, and flywheel energy storage system is held Row discharge operation mode, and discharge power increases with the increase of deviation DC voltage U, when U is located at [- Ub,-Uc] when, with inclined The increase of poor DC voltage U, discharge power with 100% power output, discharge process continue be to the SOC value of flywheel energy storage system 0, inversion feedback device does not work;
When deviation DC voltage U is located at [Ua, Ub] in section, subway train is in retarding braking state, if flywheel energy storage system SOC < 1, flywheel energy storage system is in charging operations mode, and charge power increases with the increase of deviation DC voltage U, works as U Positioned at [Ub, Uc] when, with the increase of deviation DC voltage U, charge power is with 100% power output, constantly monitoring during this period The SOC value of flywheel energy storage system, as SOC=1, if deviation DC voltage U is still located at [Ua, Uc] in section, then start inverter, If inverter feedback power is relatively small, it is fed back to low-voltage alternating-current power supply network, if inverter feedback power is relatively large, is led to Grid-connected switch is crossed, step-up transformer is fed back to 10KV/35KV Alternating Current Power Supply net, by extra regenerating braking energy inversion to exchange Power supply grid.
CN201611062465.5A 2016-11-28 2016-11-28 Rail traffic regenerating braking energy comprehensive recycling device and method CN107380187B (en)

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CN108539772B (en) * 2018-03-30 2020-06-05 中车青岛四方车辆研究所有限公司 Urban rail transit regenerative braking energy control and distribution system and method
CN108437806B (en) * 2018-03-30 2019-09-13 中车青岛四方车辆研究所有限公司 The configuration system and method for urban track traffic regenerating braking energy recyclable device
CN109149634A (en) * 2018-08-29 2019-01-04 沈阳微控新能源技术有限公司 Regeneration energy recycling system and control method based on flywheel energy storage and inversion feedback
CN109353367B (en) * 2018-08-29 2020-04-03 微控物理储能研究开发(深圳)有限公司 Regenerative energy recovery system based on flywheel energy storage and resistance braking and control method
CN110034556B (en) * 2019-03-27 2020-05-08 沈阳微控新能源技术有限公司 Regenerative braking energy recovery control method, system and device

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