CN209126537U - System is utilized applied to attached wires of AC electrified railway Regenerated energy - Google Patents
System is utilized applied to attached wires of AC electrified railway Regenerated energy Download PDFInfo
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- CN209126537U CN209126537U CN201821614978.7U CN201821614978U CN209126537U CN 209126537 U CN209126537 U CN 209126537U CN 201821614978 U CN201821614978 U CN 201821614978U CN 209126537 U CN209126537 U CN 209126537U
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Abstract
The utility model discloses one kind and utilizes system applied to attached wires of AC electrified railway Regenerated energy, the system is arranged between the supply arm of electric split-phase both ends, disconnecting switch one end is connect with Alternating Current Power Supply arm, the other end is sequentially connected breaker step-down transformer primary side, step-down transformer primary side other end ground connection, secondary side is connect with fairing, realizes the transformation of electric energy step-down rectifier；DC chopped-wave device is connect with energy storage device, is charged to energy storage device；DC inverter device is connected through three-phase isolation transformer with bus, and regenerative electric energy smoothly transmits.Beneficial effect is, pass through fairing, DC chopped-wave device, DC inverter device, the Regenerated energy that traction braking is generated, it is connect by energy storage device and DC inverter device with power distribution network, it convert impact regenerative electric energy can by energy storage-power distribution network, storage Regenerated energy can be fed back to supply arm to power distribution network, while again by smooth output, improve regenerative electric energy utilization rate, reduce impact regenerative electric energy to it is grid-connected when load impact.
Description
Technical field
The utility model relates to Regenerated energies to utilize system, be applied to attached wires of AC electrified railway Regenerated energy more particularly to one kind
Utilize system.
Background technique
Attached wires of AC electrified main line railway has the characteristics that rate of traffic flow is big, power grade is high, at present electric locomotive (motor-car
Group) cross-straight-intersection trailer system is used, preferentially use regenerative braking.
As energy conservation realizes constantly enhancing, train regenerating braking energy is efficiently used, and then reduces operation energy charge
Expenditure is gradually accepted extensively, and therefore, research absorbs regenerating braking energy, stored and made full use of with important meaning
Justice.
Due to attached wires of AC electrified railway tractive power supply system use single side feeding mode, braking energy regeneration utilization of power by
It is limited to electric split-phase facilities, can not makes to regenerate energy intercommunication between different supply arms, lead to the direct benefit of regenerating braking energy
It is lower with rate, and occur the operating condition of active pushing electric network often.
Currently, the Regenerated energy of field of urban rail is more mature using system, but it is applied to attached wires of AC electrified iron
The Regenerated energy on road is using system still in theoretical research and experimental verification stage.To solve using high-speed overload as the main direction of development
Attached wires of AC electrified railway solve Regenerated energy and utilize Process Problems, urgent need develops one kind can be by energy storage and energy transfer point
System is utilized with the Regenerated energy combined, improves regenerative electric energy utilization rate in tractive power supply system.
Summary of the invention
The technical issues of the utility model solves is to provide one kind and can combine energy storage with energy transfer distribution
Regenerated energy utilize system.
The utility model utilizes system the technical scheme adopted is that one kind is applied to attached wires of AC electrified railway Regenerated energy,
The system is arranged between the supply arm at electric split-phase both ends, including, disconnecting switch, breaker, step-down transformer, fairing,
DC chopped-wave device, energy storage device, DC inverter device, isolating transformer；Described disconnecting switch one end respectively with exchange
27.5kV supply arm A, B connection, the other end are sequentially connected circuit breaker Q F1, QF2, step-down transformer TP1, TP2 primary side, are depressured
Transformer primary side other end ground connection, secondary side are connect with fairing, realize the transformation of electric energy step-down rectifier；DC chopped-wave device
The DC link being connected from two sides fairing is drawn, and DC chopped-wave device is connect with energy storage device E, is carried out to energy storage device E
Charging；DC inverter device is drawn from two sides fairing DC link, is connected through three-phase isolation transformer with 10kV bus, then
Raw electric energy smoothly transmits.
Tractive power supply system exchanges side there are when Regenerated energy, when exchange side supply arm A or B is in regenerative braking state, every
It leaves pass QS1 or QS2 and circuit breaker Q F1 or QF2 closure, Regenerated energy is put into operation using system.
Side regenerative electric energy is exchanged, it is right after rectified device AC/DC-1 or AC/DC-2 and DC chopped-wave device DC/DC are converted
Energy storage device E charges, while realizing after energy storage device energy snubber to 10kV distribution system and smoothly exporting electric energy.
Side regenerative electric energy is exchanged, fairing AC/DC-1 or AC/DC-2 and DC inverter device DC/AC and 10kV are passed through
Bus is connected through isolating transformer TP3, is utilized for regenerating braking energy and is provided access.
When exchange side supply arm A or B is in traction state, energy meets traction requirements in energy storage device, and closure is kept apart
It closes QS1 or QS2 and circuit breaker Q F1 or QF2, energy storage device enters discharge condition, Regenerated energy is put into operation using system, energy storage dress
It is set to electric energy needed for the train in supply arm provides.
Exchange side supply arm A or B is in regenerative braking state to be kept apart when adjacent supply arm B or A is in traction state
It closes QS1, QS2 and circuit breaker Q F1, QF2 is closed, regenerating braking energy passes through the operation of fairing AC/DC-1 and AC/DC-2
State Collaborative Control, the energy intercommunication of supply arm two sides.
The utility model has the beneficial effects that will be drawn by fairing, DC chopped-wave device, DC inverter device
The Regenerated energy generated is braked, is connect by energy storage device and DC inverter device with 10kV power distribution network, makes impact regenerative electric energy
It can be converted by energy storage-power distribution network, 10kV power distribution network is given in smooth output, while the Regenerated energy of storage can be fed back to power supply again
Arm effectively increases the utilization rate of regenerative electric energy, reduces load impact of the impact regenerative electric energy to 10kV when grid-connected.
Detailed description of the invention
Fig. 1 is that the utility model regenerative electric energy utilizes system composition schematic diagram；
Fig. 2 a is Regenerated energy curve graph；
Fig. 2 b is energy storage device energy storage storage curve graph；
Fig. 2 c is power distribution network transfer electrical energy curve graph.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description:
Fig. 1 is that the utility model regenerative electric energy utilizes system composition schematic diagram；As shown in Figure 1, the utility model one kind is answered
System is utilized for attached wires of AC electrified railway Regenerated energy, which is arranged between the supply arm at electric split-phase both ends, including isolation
Switch QS1, QS2, circuit breaker Q F1, QF2, step-down transformer TP1, TP2, fairing AC/DC-1, AC/DC-2, DC chopped-wave
Device DC-DC, energy storage device E, DC inverter device DC/AC, isolating transformer TP3.Wherein, disconnecting switch QS1, QS2 one end
It is connect respectively with exchange 27.5kV supply arm A, B, the other end is sequentially connected circuit breaker Q F1, QF2, step-down transformer TP1, TP2 mono-
Secondary side, step-down transformer primary side other end ground connection, secondary side are connect with fairing AC/DC-1, AC/DC-2, realize electric energy
Step-down rectifier transformation；The DC link that DC chopped-wave device DC-DC is connected from two sides fairing is drawn, DC chopped-wave device
DC-DC is connect with energy storage device E, and realization charges to energy storage device E；DC inverter device DC/AC is from two sides fairing
DC link is drawn, and is connected through three-phase isolation transformer TP3 with 10kV bus, realizes that regenerative electric energy smoothly transmits.By this reality
With novel, the regenerative electric energy of trailer system is connect and recycled with low-voltage distribution system, improves regenerative electric energy utilization rate.
For applied to alternating current electric railway regenerative electric energy, using system, its specific practice is:
Fig. 2 a to Fig. 2 c is the storage of the utility model regenerative electric energy, power distribution network transfer power load chart, to install 1MW
For energy storage device, when tractive power supply system exchange side there are Regenerated energy (in Fig. 2 a it is raw can curve be negative value) when, that is, exchange
When side supply arm A or B are in regenerative braking state, disconnecting switch QS1 or QS2 and circuit breaker Q F1 or QF2 closure, Regenerated energy benefit
It is put into operation with system；When Regenerated energy system breaks down, Regenerated energy system can be made to be detached from traction system by cutting off breaker
System does not influence trailer system operation.Exchange side regenerative electric energy, rectified device AC/DC-1 or AC/DC-2 and DC chopped-wave device
After DC/DC transformation, charge to energy storage device E, while may be implemented after energy storage device energy snubber to 10kV distribution
System smoothly exports electric energy, and (energy storage device energy storage storage curve is negative value in Fig. 2 b；At the same time, side regenerative electric energy is exchanged, is led to
Over commutation device AC/DC-1 or AC/DC-2 and DC inverter device DC/AC is connect with 10kV bus through isolating transformer TP3, is
Regenerating braking energy utilizes offer access, that is, train regenerative braking electric energy in supply arm is smoothly sent to 10kV bus (Fig. 2 c
Power distribution network shifts smoothed curve), from three curves of Fig. 2 a to Fig. 2 c as can be seen, in Fig. 2 a the regeneration of impact discontinuity it is negative
Lotus realizes the output electric energy continually and steadily exported to distribution system using Fig. 2 c by energy storage Fig. 2 b.
The utility model can also realize the storage transfer of energy storage Regenerated energy inside Traction networks, when tractive power supply system
Exchange side without Regenerated energy (in Fig. 2 a it is raw can curve be zero) when, that is, when exchange side supply arm A or B is in traction state, if this
When energy storage device in energy meet traction requirements, then be closed disconnecting switch QS1 or QS2 and circuit breaker Q F1 or QF2, fill energy storage
It sets and enters discharge condition (energy storage device energy storage stores curve by bearing to zero process in Fig. 2 b), Regenerated energy utilizes system investment fortune
Row, makes the train in energy storage device supply arm provide required electric energy.
In addition, the utility model can also realize the transfer of regenerative electric energy Regenerated energy inside Traction networks, when exchange side supplies
Electric arm A or B are in regenerative braking state, and when adjacent supply arm B or A is in traction state, disconnecting switch QS1, QS2 and open circuit
Device QF1, QF2 are closed, and regenerating braking energy passes through the operating status Collaborative Control of fairing AC/DC-1 and AC/DC-2, real
Existing supply arm two sides energy intercommunication, and thus reduce tractive power supply system and draw energy consumption.
When breaking down inside Regenerated energy device, can by cut-off breaker QF1 and QF2 by Regenerated energy using system from
It is cut off in tractive power supply system, guarantees that tractive power supply system operates normally.
The utility model is applied to the principle that alternating current electric railway Regenerated energy utilizes system:
Fairing AC/DC-1, AC/DC-2, the DC chopped-wave device DC/ that the utility model is constituted with power electronic devices
Based on DC, DC inverter device DC/AC, by triangular Collaborative Control, the transformation and feedback utilization efficiency of electric energy are improved,
The electric energy generated in train regenerative braking is smoothly passed into 10kV bus, is utmostly reduced to the grid-connected load of 10kV power distribution network
Impact.
The utility model electric energy conversion portion, while being connected with the supply arm at electric split-phase both ends, pass through supply arm A, B
Fairing AC/DC-1, AC/DC-2(four-quadrant converter plant) realize energy intercommunication, so that regenerative electric energy is powered at two
It is shifted between arm, utmostly reduces the peak load demand of adjacent supply arm, realize two supply arm workload demands
Equalization.
The utility model attached wires of AC electrified railway " store up-match " one Regenerated energy utilizes system, and DC side is configured with energy storage dress
E is set, regeneration energy utilization flexibility is improved.Energy storage device E can not only be with DC chopped-wave DC/DC, DC inverter device DC/
AC carries out Collaborative Control, makes regenerative electric energy feedback to 10kV bus；Meanwhile it using DC chopped-wave device DC/AC and can also hand over
Straight fairing AC/DC-1, AC/DC-2(four-quadrant converter plant) access that constitutes, by the electric energy feedback of storage to exchanging confession
Electric arm A or B, and it is achieved in regenerative electric energy fast energy storage and release.
The utility model passes through fairing AC/DC-1, AC/DC-2, DC chopped-wave device DC-DC, DC inverter device
DC/AC, being respectively utilized to complete the friendship-to electric energy, directly transformation, straight-straight transformation, straight, alternation change, the regeneration that traction braking is generated
Can, it is connect by energy storage device and DC inverter device with 10kV power distribution network, match impact regenerative electric energy can by energy storage-
Power grid conversion, 10kV power distribution network is given in smooth output, while the Regenerated energy of storage can be fed back to supply arm again, effectively increases again
The utilization rate of raw electric energy, reduces load impact of the impact regenerative electric energy to 10kV when grid-connected.
Claims (6)
1. one kind, which is applied to attached wires of AC electrified railway Regenerated energy, utilizes system, which is characterized in that the system is arranged in electric split-phase two
Between the supply arm at end, including, it is disconnecting switch (QS1, QS2), breaker (QF1, QF2), step-down transformer (TP1, TP2), whole
Flow device (AC/DC-1, AC/DC-2), DC chopped-wave device (DC-DC), energy storage device (E), DC inverter device (DC/AC),
Isolating transformer (TP3)；Described disconnecting switch (QS1, QS2) one end is connect with exchange 27.5kV supply arm A, B respectively, the other end
It is sequentially connected breaker (QF1, QF2), step-down transformer (TP1, TP2) primary side, the step-down transformer primary side other end is grounded,
Secondary side is connect with fairing (AC/DC-1, AC/DC-2), realizes the transformation of electric energy step-down rectifier；DC chopped-wave device (DC-
DC) DC link being connected from two sides fairing is drawn, and DC chopped-wave device (DC-DC) is connect with energy storage device (E), to storage
Energy device E charges；DC inverter device (DC/AC) is drawn from two sides fairing DC link, isolates transformation through three
Device (TP3) is connected with 10kV bus, and regenerative electric energy smoothly transmits.
2. the attached wires of AC electrified railway Regenerated energy according to claim 1 that is applied to utilizes system, which is characterized in that traction supplies
Electric system exchanges side there are when Regenerated energy, when exchange side supply arm A or B is in regenerative braking state, disconnecting switch QS1 or QS2
And circuit breaker Q F1 or QF2 closure, Regenerated energy are put into operation using system.
3. the attached wires of AC electrified railway Regenerated energy according to claim 1 that is applied to utilizes system, which is characterized in that exchange side
After regenerative electric energy, rectified device (AC/DC-1) or (AC/DC-2) and DC chopped-wave device (DC/DC) transformation, to energy storage device
E charges, while realizing after energy storage device energy snubber to 10kV distribution system and smoothly exporting electric energy.
4. the attached wires of AC electrified railway Regenerated energy according to claim 1 that is applied to utilizes system, which is characterized in that exchange side
Regenerative electric energy passes through fairing (AC/DC-1) or fairing (AC/DC-2) and DC inverter device (DC/AC) and 10kV
Bus is connected through isolating transformer TP3, is utilized for regenerating braking energy and is provided access.
5. the attached wires of AC electrified railway Regenerated energy according to claim 1 that is applied to utilizes system, which is characterized in that exchange side
When supply arm A or B are in traction state, energy meets traction requirements in energy storage device, is closed disconnecting switch QS1 or QS2 and breaks
Road device QF1 or QF2, energy storage device enter discharge condition, and Regenerated energy is put into operation using system, and energy storage device is in supply arm
Electric energy needed for train provides.
6. the attached wires of AC electrified railway Regenerated energy according to claim 1 that is applied to utilizes system, which is characterized in that exchange side
Supply arm A or B are in regenerative braking state, when adjacent supply arm B or A is in traction state, disconnecting switch QS1, QS2 and open circuit
Device QF1, QF2 are closed, and regenerating braking energy cooperates with control by the operating status of fairing (AC/DC-1) and (AC/DC-2)
System, the energy intercommunication of supply arm two sides.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821614978.7U CN209126537U (en) | 2018-09-30 | 2018-09-30 | System is utilized applied to attached wires of AC electrified railway Regenerated energy |
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| CN201821614978.7U CN209126537U (en) | 2018-09-30 | 2018-09-30 | System is utilized applied to attached wires of AC electrified railway Regenerated energy |
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| CN209126537U true CN209126537U (en) | 2019-07-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109204006A (en) * | 2018-09-30 | 2019-01-15 | 中国铁路设计集团有限公司 | One kind being applied to attached wires of AC electrified railway Regenerated energy and utilizes system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109204006A (en) * | 2018-09-30 | 2019-01-15 | 中国铁路设计集团有限公司 | One kind being applied to attached wires of AC electrified railway Regenerated energy and utilizes system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201109 Address after: 100844 Fuxing Road, Beijing, Haidian District, No. 10 Patentee after: China National Railway Group Co.,Ltd. Patentee after: CHINA RAILWAY DESIGN Corp. Address before: 300142 Hebei District, Zhongshan Road, No. 10, Patentee before: CHINA RAILWAY DESIGN Corp. |
|
| TR01 | Transfer of patent right |