CN109484199A - A kind of powered construction and its method using electric railway regenerating braking energy - Google Patents
A kind of powered construction and its method using electric railway regenerating braking energy Download PDFInfo
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- CN109484199A CN109484199A CN201811569751.XA CN201811569751A CN109484199A CN 109484199 A CN109484199 A CN 109484199A CN 201811569751 A CN201811569751 A CN 201811569751A CN 109484199 A CN109484199 A CN 109484199A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/10—Dynamic electric regenerative braking
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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Abstract
The present invention provides a kind of powered constructions and its method using electric railway regenerating braking energy, are related to electric railway field of energy-saving technology.Two set of three straight converter system DC side of intersection connects back-to-back, and DC side common end connects accumulator by DC/DC converter, and exchange side is respectively connected to traction substation traction bus bar side and station 10kV three-phase low-voltage distribution bus side.Tuning controller obtains the state-of-charge of the voltage of traction substation draft arm, current signal and accumulator, straight converter system is intersected in coordinated control three and DC/DC converter carries out Power Exchange, it realizes conversion of the train regenerating braking energy to station low pressure match system, and regenerating braking energy remaining after conversion is stored to accumulator.The invention construction and control method are simple and reliable, easy to implement.
Description
Technical field
The present invention relates to electric railway field of energy-saving technology, in particular to electric railway regenerating braking energy utilizes.
Background technique
Electric railway electric locomotive can generate very big regenerating braking energy in braking process, if in same supply arm
There are other electric locomotives to be in traction state, regenerating braking energy can be absorbed, be beneficial to energy conservation emission reduction.However, due to
Supply arm length limited, the train in regenerative braking and traction is often in different supply arms, in addition, traction and regenerative braking
While property, power coincide, and property is poor, and therefore, regenerating braking energy cannot be fully utilized.
Cophase supply technology eliminates the electric split-phase at traction substation, extends power supply arm lengths, is conducive to regeneration system
The utilization of energy.However, regenerating braking energy cannot be by when regenerating braking energy total in supply arm is greater than haulage capacity
Full utilization or rate of traffic flow are low, when the train of traction and regenerative braking operating condition can not occur simultaneously in same supply arm, then
Raw braking energy can not also utilize.
Energy storage technology is another approach for improving regenerating braking energy utilization rate.That is, by being supplied in traction substation or so
Energy storage device is respectively set in electric arm, train regeneration energy is recycled, and is used in train traction；Alternatively, borrowing
Japanese railway power regulator RPC technology of reflecting realizes that regenerating braking energy is supplied in left and right in its DC side setting energy storage device
It is shifted between electric arm, and regenerating braking energy remaining after transfer is stored.However, when traction substation regeneration energy compared with
When big, the power and energy density requirement to energy storage device are all very high, and investment is big.For both wired, installation area
It is also restrained.
Some large-scale stations, such as Shanghai Station, train enter the station frequently, and regenerating braking energy is larger, while low pressure in the station of station
Controller switching equipment electricity consumption is also more.Station station equipment electricity consumption is converted by train regenerating braking energy, remaining energy is subject to again
Storage, plays the effect killed two birds with one stone, and not only takes full advantage of regenerating braking energy, but also save capacity of energy storing device.In consideration of it, grinding
Electric railway regenerating braking energy processed using especially necessary.
Summary of the invention
It is an object of the invention to provide a kind of powered construction and its method using electric railway regenerating braking energy,
It can efficiently solve the technical issues of storage and effective use of train regenerating braking energy.
The present invention is to realize its purpose, using following technical scheme: a kind of using electric railway regenerating braking energy
Powered construction, including traction substation traction bus TBa, traction bus TBb, rail R, station 10kV distribution bus RDB, three-phase
Straight current transformer COa, straight current transformer COb, DC/DC converter DDC of three intersections, accumulator SD are handed over, the three straight current transformer COa's of intersection is straight
The DC side DCLb that stream side DCLa intersects straight current transformer COb with three is connected, and constitutes back to back structure, DC side common end passes through
DC/DC converter DDC is connected to accumulator SD；The exchange side three-phase terminal of the three straight current transformer COa of intersection passes through cable CAx respectively and connects
It is connected to traction bus TBb to traction bus TBa, by cable CAy, rail R is connected to by cable CAz；The three straight current transformers of intersection
The exchange side three-phase terminal of COb is respectively connected to a phase, b phase and c phase of station 10kV distribution bus RDB by threephase cable；Coordinate
Controller CC is equipped with tri- output ends of five input terminals of In1~In5 and Out1~Out3, wherein it is female that input terminal In1 is connected to traction
The secondary side of the voltage transformer pt a of line TBa, input terminal In2 are connected to the secondary side of the Current Transmit a of tractive feeder TFa,
Input terminal In3 is connected to the secondary side of the voltage transformer CTb of traction bus TBb, and input terminal In4 is connected to the electricity of tractive feeder TFb
The secondary side of current transformer CTb, input terminal In5 are connected to accumulator SD state-of-charge output end, and output end Out1 is connected to three intersections
The control terminal of straight current transformer COa, output end Out2 are connected to the control terminal of the straight current transformer COb of three intersections, and output end Out3 is connected to DC/
The control terminal of DC converter DDC.
When the tractive feeder TFa has the road n arranged side by side, Current Transmit a is also n, then input terminal In2 is set as
The road n is respectively connected to the secondary side of n Current Transmit a；When the tractive feeder TFb has the road n arranged side by side, Current Mutual Inductance
Device CTb is also n, then input terminal In4 is set as the road n, is respectively connected to the secondary side of n Current Transmit b, n >=2.
The rated power P of the straight current transformer COa of three intersectionE, the three straight current transformer COb of intersection rated power PD、DC/DC
The rated power P of converter DDCS, accumulator SD rated power PB, relationship between them meets: PE≥PD≥PS, PS=PB。
A kind of control method of the powered construction using electric railway regenerating braking energy, tuning controller CC pass through defeated
Enter to hold In1 and In2 to obtain the realtime power of traction bus TBa, is denoted as pa, traction bus is obtained by input terminal In3 and In4
The realtime power of TBb, is denoted as pb, the state-of-charge mark SOC of accumulator SD, the three straight converter system of intersection of note are obtained by In5
COa real time execution power is pe, the three straight converter system COb real time execution power of intersection be pdIt is transported in real time with DC/DC converter DDC
Row power is ps, according to pa、pbWith the value real-time control p of SOCe、pd、psThree's Power Exchange realizes electric railway regeneration system
Energy conversion, storage and utilization, specific steps are as follows:
1) work as pa+pb>=0, for traction substation without regenerating braking energy, tuning controller CC controls accumulator SD electric discharge；That is,
The three straight current transformer COa of intersection of control is in standby, and control DC/DC converter DDC implements accumulator SD electric discharge, and controls three
Intersect straight current transformer COb to station 10kV distribution bus RDB transmission power, power requirement meets: 1. pe=0；2. work as SOC >
When SOC_lower, pd=PS, as SOC≤SOC_lower, pd=0；3. as SOC > SOC_lower, ps=PS, when SOC≤
When SOC_lower, ps=0, wherein SOC_lower is the lower limit value of accumulator SD electric discharge, and the working condition by accumulator SD is true
It is fixed；
2) as-PD≤pa+pb< 0, traction substation has regenerating braking energy, and tuning controller CC controls regenerative brake power
Regenerating braking energy is transferred to station 10kV distribution bus RDB by a big side-lining bus, and coordinated control accumulator SD is put
Electricity；That is, the three straight converter system COa of intersection of control runs on two-phase operating mode, work as pa≥pbWhen, pass through cable CAy and cable
CAz transmits power to DC side DCLa, works as pa<pbWhen, power, control are transmitted to DC side DCLa by cable CAx and cable CAz
DC/DC converter DDC processed implements accumulator SD electric discharge, and controls the three straight current transformer COb of intersection to station 10kV distribution bus RDB
Transmission power, power requirement meet: 1. pe=| pa+pb|；2. as SOC > SOC_lower, pd=PD, as SOC≤SOC_
When lower, pd=| pa+pb|；3. as SOC > SOC_lower, ps=PD-|pa+pb|, as SOC≤SOC_lower, ps=0；
3) work as pa+pb<-PD, traction substation has a regenerating braking energy, and it is big that tuning controller CC controls regenerative brake power
A side-lining bus regenerating braking energy is transferred to station 10kV distribution bus RDB, and coordinated control accumulator SD is stored
Remaining energy；That is, the three straight current transformer COa of intersection of control runs on two-phase operating mode, work as pa≥pbWhen, by cable CAy and
Cable CAz transmits power to DC side DCLa, works as pa<pbWhen, function is transmitted to DC side DCLa by cable CAx and cable CAz
Rate, control DC/DC converter DDC implement accumulator SD charging, and control the three straight current transformer COb of intersection and match the goddess of lightning to station 10kV
Line RDB transmission power, power requirement meet: 1. as SOC >=SOC_upper, pe=PD, as SOC < SOC_upper, ifThen pe=| pa+pb|, ifThen②pd=PD；3. as SOC >=SOC_upper
When, ps=0, as SOC < SOC_lower, ifThen ps=| pa+pb|-PDIfThen ps=
PS；Wherein, SOC_upper is the upper limit value of accumulator SD charging, is determined by the working condition of accumulator SD.
The working principle of the invention is: detection traction substation realtime power judges two traction power supply arm regenerative braking function
Rate size intersects that straight current transformer runs on two facies models, straight unsteady flow is intersected in 10kV distribution bus side three using traction bus bar side three
Device runs on three phase modes, and the regenerating braking energy of the big supply arm of regenerative brake power is transferred to station 10kV with the goddess of lightning
Line, and regenerating braking energy remaining after transfer is stored to accumulator.Real-time charge and discharge control is carried out to accumulator, improves storage
It can device utilization rate.
Compared with prior art, the beneficial effects of the present invention are:
1, electric railway train regenerating braking energy is transferred to station low-voltage distribution system by the present invention, is conducive to improve
Regenerating braking energy utilization rate, and effectively save capacity of energy storing device.
2, the powered construction and control method that the present invention uses can save the capacity of current transformer power switch tube.
3, the present invention is simple and reliable, easy to implement.
Detailed description of the invention
Fig. 1 is the schematic diagram of the embodiment of the present invention.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and detailed description.It is a kind of to utilize electric railway again
The powered construction of raw braking energy, including traction substation traction bus TBa, traction bus TBb, rail R, station 10kV distribution
Bus RDB, the straight current transformer COa of three intersections, straight current transformer COb, DC/DC converter DDC of three intersections, accumulator SD, three intersections are straight
The DC side DCLb that the DC side DCLa of current transformer COa intersects straight current transformer COb with three is connected, and constitutes back to back structure, straight
It flows side common end and accumulator SD is connected to by DC/DC converter DDC；The exchange side three-phase terminal point of the three straight current transformer COa of intersection
Traction bus TBa is not connected to by cable CAx, traction bus TBb is connected to by cable CAy, rail R is connected to by cable CAz；
The exchange side three-phase terminal of the three straight current transformer COb of intersection is respectively connected to a of station 10kV distribution bus RDB by threephase cable
Phase, b phase and c phase；Tuning controller CC is equipped with tri- output ends of five input terminals of In1~In5 and Out1~Out3, wherein defeated
Enter to hold In1 to be connected to the secondary side of the voltage transformer pt a of traction bus TBa, input terminal In2 is connected to the electric current of tractive feeder TFa
The secondary side of mutual inductor CTa, input terminal In3 are connected to the secondary side of the voltage transformer CTb of traction bus TBb, and input terminal In4 connects
To the secondary side of the Current Transmit b of tractive feeder TFb, input terminal In5 is connected to accumulator SD state-of-charge output end, output
End Out1 is connected to the control terminal of the straight current transformer COa of three intersections, and output end Out2 is connected to the control terminal of the straight current transformer COb of three intersections,
Output end Out3 is connected to the control terminal of DC/DC converter DDC.
When the tractive feeder TFa has the road n arranged side by side, Current Transmit a is also n, then input terminal In2 is set as
The road n is respectively connected to the secondary side of n Current Transmit a；When the tractive feeder TFb has the road n arranged side by side, Current Mutual Inductance
Device CTb is also n, then input terminal In4 is set as the road n, is respectively connected to the secondary side of n Current Transmit b, n >=2.
The rated power P of the straight current transformer COa of three intersectionE, the three straight current transformer COb of intersection rated power PD、DC/DC
The rated power P of converter DDCS, accumulator SD rated power PB, relationship between them meets: PE≥PD≥PS, PS=PB。
A kind of control method of the powered construction using electric railway regenerating braking energy, tuning controller CC pass through defeated
Enter to hold In1 and In2 to obtain the realtime power of traction bus TBa, is denoted as pa, traction bus is obtained by input terminal In3 and In4
The realtime power of TBb, is denoted as pb, the state-of-charge mark SOC of accumulator SD, the three straight converter system of intersection of note are obtained by In5
COa real time execution power is pe, the three straight converter system COb real time execution power of intersection be pdIt is transported in real time with DC/DC converter DDC
Row power is ps, according to pa、pbWith the value real-time control p of SOCe、pd、psThree's Power Exchange realizes electric railway regeneration system
Energy conversion, storage and utilization, specific steps are as follows:
1) work as pa+pb>=0, for traction substation without regenerating braking energy, tuning controller CC controls accumulator SD electric discharge；That is,
The three straight current transformer COa of intersection of control is in standby, and control DC/DC converter DDC implements accumulator SD electric discharge, and controls three
Intersect straight current transformer COb to station 10kV distribution bus RDB transmission power, power requirement meets: 1. pe=0；2. work as SOC >
When SOC_lower, pd=PS, as SOC≤SOC_lower, pd=0；3. as SOC > SOC_lower, ps=PS, when SOC≤
When SOC_lower, ps=0, wherein SOC_lower is the lower limit value of accumulator SD electric discharge, and the working condition by accumulator SD is true
It is fixed；
2) as-PD≤pa+pb< 0, traction substation has regenerating braking energy, and tuning controller CC controls regenerative brake power
Regenerating braking energy is transferred to station 10kV distribution bus RDB by a big side-lining bus, and coordinated control accumulator SD is put
Electricity；That is, the three straight converter system COa of intersection of control runs on two-phase operating mode, work as pa≥pbWhen, pass through cable CAy and cable
CAz transmits power to DC side DCLa, works as pa<pbWhen, power, control are transmitted to DC side DCLa by cable CAx and cable CAz
DC/DC converter DDC processed implements accumulator SD electric discharge, and controls the three straight current transformer COb of intersection to station 10kV distribution bus RDB
Transmission power, power requirement meet: 1. pe=| pa+pb|；2. as SOC > SOC_lower, pd=PD, as SOC≤SOC_
When lower, pd=| pa+pb|；3. as SOC > SOC_lower, ps=PD-|pa+pb|, as SOC≤SOC_lower, ps=0；
3) work as pa+pb<-PD, traction substation has a regenerating braking energy, and it is big that tuning controller CC controls regenerative brake power
A side-lining bus regenerating braking energy is transferred to station 10kV distribution bus RDB, and coordinated control accumulator SD is stored
Remaining energy；That is, the three straight current transformer COa of intersection of control runs on two-phase operating mode, work as pa≥pbWhen, by cable CAy and
Cable CAz transmits power to DC side DCLa, works as pa<pbWhen, function is transmitted to DC side DCLa by cable CAx and cable CAz
Rate, control DC/DC converter DDC implement accumulator SD charging, and control the three straight current transformer COb of intersection and match the goddess of lightning to station 10kV
Line RDB transmission power, power requirement meet: 1. as SOC >=SOC_upper, pe=PD, as SOC < SOC_upper, ifThen pe=| pa+pb|, ifThen②pd=PD；3. as SOC >=SOC_upper
When, ps=0, as SOC < SOC_lower, ifThen ps=| pa+pb|-PDIfThen ps=
PS；Wherein, SOC_upper is the upper limit value of accumulator SD charging, is determined by the working condition of accumulator SD.
Claims (4)
1. a kind of powered construction using electric railway regenerating braking energy, including traction substation traction bus TBa, traction
Bus TBb, rail R, station 10kV distribution bus RDB, the straight current transformer COa of three intersections, three intersection straight current transformer COb, DC/DC become
Parallel operation DDC, accumulator SD, it is characterised in that: the DC side DCLa of the three straight current transformer COa of intersection intersects straight current transformer COb with three
DC side DCLb be connected, constitute back to back structure, DC side common end is connected to accumulator SD by DC/DC converter DDC；
The exchange side three-phase terminal of the three straight current transformer COa of intersection passes through cable CAx respectively and is connected to traction bus TBa, is connect by cable CAy
Rail R is connected to traction bus TBb, by cable CAz；The exchange side three-phase terminal of the three straight current transformer COb of intersection passes through three-phase
Cable is respectively connected to a phase, b phase and c phase of station 10kV distribution bus RDB；Tuning controller CC is defeated equipped with In1~In5 five
Enter tri- output ends in end and Out1~Out3, wherein input terminal In1 is connected to the secondary of the voltage transformer pt a of traction bus TBa
Side, input terminal In2 are connected to the secondary side of the Current Transmit a of tractive feeder TFa, and input terminal In3 is connected to traction bus TBb's
The secondary side of voltage transformer CTb, input terminal In4 are connected to the secondary side of the Current Transmit b of tractive feeder TFb, input terminal
In5 is connected to accumulator SD state-of-charge output end, and output end Out1 is connected to the control terminal of the straight current transformer COa of three intersections, output end
Out2 is connected to the control terminal of the straight current transformer COb of three intersections, and output end Out3 is connected to the control terminal of DC/DC converter DDC.
2. a kind of powered construction using electric railway regenerating braking energy according to claim 1, the traction
When feeder line TFa has the road n arranged side by side, Current Transmit a is also n, then input terminal In2 is set as the road n, is respectively connected to n electricity
The secondary side of current transformer CTa；When the tractive feeder TFb has the road n arranged side by side, Current Transmit b is also n, then defeated
Enter to hold In4 to be set as the road n, is respectively connected to the secondary side of n Current Transmit b, n >=2.
3. a kind of powered construction using electric railway regenerating braking energy according to claim 1, it is characterised in that:
The rated power P of the straight current transformer COa of three intersectionE, the three straight current transformer COb of intersection rated power PD, DC/DC converter DDC
Rated power PS, accumulator SD rated power PB, relationship between them meets: PE≥PD≥PS,PS
=PB。
4. a kind of control method of the powered construction using electric railway regenerating braking energy, it is characterised in that: coordinated control
Device CC obtains the realtime power of traction bus TBa by input terminal In1 and In2, is denoted as pa, obtained by input terminal In3 and In4
The realtime power for drawing bus TBb, is denoted as pb, the state-of-charge mark SOC of accumulator SD is obtained by In5, three intersection of note is straight
Converter system COa real time execution power is pe, the three straight converter system COb real time execution power of intersection be pdWith DC/DC converter
DDC real time execution power is ps, according to pa、pbWith the value real-time control p of SOCe、pd、psThree's Power Exchange realizes electrified iron
The conversion of road regenerating braking energy, storage and utilization, specific steps are as follows:
1) work as pa+pb>=0, for traction substation without regenerating braking energy, tuning controller CC controls accumulator SD electric discharge；That is, control
The three straight current transformer COa of intersection are in standby, and control DC/DC converter DDC implements accumulator SD electric discharge, and control three intersections
Straight current transformer COb meets to station 10kV distribution bus RDB transmission power, power requirement: 1. pe=0；2. working as SOC > SOC_
When lower, pd=PS, as SOC≤SOC_lower, pd=0；3. as SOC > SOC_lower, ps=PS, as SOC≤SOC_
When lower, ps=0, wherein SOC_lower is the lower limit value of accumulator SD electric discharge, is determined by the working condition of accumulator SD；
2) as-PD≤pa+pb< 0, traction substation has a regenerating braking energy, and it is big that tuning controller CC controls regenerative brake power
Regenerating braking energy is transferred to station 10kV distribution bus RDB by one side-lining bus, and coordinated control accumulator SD discharges；
That is, the three straight converter system COa of intersection of control runs on two-phase operating mode, work as pa≥pbWhen, by cable CAy and cable CAz to
DC side DCLa transmits power, works as pa<pbWhen, power is transmitted to DC side DCLa by cable CAx and cable CAz, controls DC/
DC converter DDC implements accumulator SD electric discharge, and controls the three straight current transformer COb of intersection and convey to station 10kV distribution bus RDB
Power, power requirement meet: 1. pe=| pa+pb|；2. as SOC > SOC_lower, pd=PD, as SOC≤SOC_lower
When, pd=| pa+pb|；3. as SOC > SOC_lower, ps=PD-|pa+pb|, as SOC≤SOC_lower, ps=0；
3) work as pa+pb<-PD, traction substation has a regenerating braking energy, and tuning controller CC controls big one of regenerative brake power
Regenerating braking energy is transferred to station 10kV distribution bus RDB by side-lining bus, and coordinated control accumulator SD storage is remaining
Energy；That is, the three straight current transformer COa of intersection of control runs on two-phase operating mode, work as pa≥pbWhen, pass through cable CAy and cable
CAz transmits power to DC side DCLa, works as pa<pbWhen, power, control are transmitted to DC side DCLa by cable CAx and cable CAz
DC/DC converter DDC processed implements accumulator SD charging, and controls the three straight current transformer COb of intersection to station 10kV distribution bus RDB
Transmission power, power requirement meet: 1. as SOC >=SOC_upper, pe=PD, as SOC < SOC_upper, ifThen pe=| pa+pb|, ifThen②pd=PD；3. as SOC >=SOC_upper
When, ps=0, as SOC < SOC_lower, ifThen ps=| pa+pb|-PDIfThen ps=
PS；Wherein, SOC_upper is the upper limit value of accumulator SD charging, is determined by the working condition of accumulator SD.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115000995A (en) * | 2022-04-15 | 2022-09-02 | 西南交通大学 | Traction power supply active power fusion system and control method thereof |
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| CN209320716U (en) * | 2018-12-21 | 2019-08-30 | 西南交通大学 | A kind of powered construction using electric railway regenerating braking energy |
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| 黄小红， 李群湛， 舒泽亮 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115000995A (en) * | 2022-04-15 | 2022-09-02 | 西南交通大学 | Traction power supply active power fusion system and control method thereof |
| CN115000995B (en) * | 2022-04-15 | 2023-01-24 | 西南交通大学 | Traction power supply active power communication system and control method thereof |
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| CN109484199B (en) | 2023-05-26 |
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