CN207691448U - A kind of new energy supply system for through traction power supply - Google Patents
A kind of new energy supply system for through traction power supply Download PDFInfo
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- CN207691448U CN207691448U CN201820106870.0U CN201820106870U CN207691448U CN 207691448 U CN207691448 U CN 207691448U CN 201820106870 U CN201820106870 U CN 201820106870U CN 207691448 U CN207691448 U CN 207691448U
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Abstract
The utility model discloses a kind of new energy supply systems for through traction power supply, including through tractive power supply system, triphase step-down transformer, total transform three phase rectifier direct-current single-phase inverter, single phase step-down transformer and grid-connected power generation system；The primary side of triphase step-down transformer is connected to three phase network, and single phase step-down transformer output end is connected across in tractive power supply system between supply arm and rail, and the grid-connected power generation system is connected to the output end of single phase step-down transformer parallel.The utility model is conducive to new energy and dissolves nearby, is capable of the energy of effective reclaiming brake portion, additional income can also be brought by both having avoided related power quality problem；The basic charge as per installed capacity of traction side can be reduced by carrying out peak clipping to traction load.
Description
Technical field
The utility model belongs to electric railway technical field more particularly to a kind of new energy for through traction power supply
Source supplying system.
Background technology
With the high speed development of power electronic technique, through tractive power supply system has received widespread attention, and utilizes three
The straight AC-AC converter of phase-blow-up substitutes traditional tractive transformer, is mutually supported between each traction substation, can effectively solve existing lead
Draw power quality existing for power supply system and excessively equal problem, can realize the two-way flow of energy, while friendly can receive
Other novel energies.Big industrial user because of the railway system as electric system again, year electricity consumption up to 40,000,000,000 kilowatt hours,
Wherein 50% or more mainly consumes in tractive power supply system, and therefore, new energy, which is accessed through tractive power supply system not only, to be had
Conducive to the consumption nearby of new energy, while the Green Development of the railway system can be promoted.
In view of current China railways mainly carry out two-part rate system price, basic charge as per installed capacity and traction load peak value indirect correlation,
Coordination control is carried out by the new energy to access, also can reach load peak clipping and then brings the mesh of economic benefit for traction side
's.On the other hand, straight friendship type electric locomotive is handed over to will produce a large amount of regenerative braking electric energy, this partial feedback electricity in braking process
Processing mode that can be current is mainly used for other locomotives under same supply arm, and the electric energy not run out of is sent back to directly counter
Power grid can't be that traction side brings additional economic well-being of workers and staff, while can also cause a series of electricity in this way as rubbish electric treatment
It can quality problems.Therefore it is contemplated that increasing energy storage device, play the role of recycling regenerative braking electric energy.
It there is now correlative study and carried out desk study for the new energy access railway system, existing research focuses primarily upon
The access form and its control strategy of the traditional tractive power supply system of photovoltaic access are discussed, and are not considered in analytic process using new
The energy and energy storage device to traction load peak clipping and recycle regenerative braking electric energy, while there is not yet new energy access is through
The correlative study of tractive power supply system.
Utility model content
In order to overcome the shortcomings of art methods, the purpose of this utility model is that proposing a kind of for through traction
The new energy supply system of power supply can be suitable for through tractive power supply system, not influenced while realizing grid-connected original
The normal operation of tractive power supply system；Be conducive to new energy to dissolve nearby and the Green Development of the railway system, can effectively recycle
The energy of regenerative braking part, additional income can also be brought by both having avoided related power quality problem；By to traction
Load, which carries out peak clipping, can reduce the basic charge as per installed capacity of traction side.
In order to achieve the above object, the utility model is using technical solution：A kind of new energy for through traction power supply
Source supplying system, including through tractive power supply system, triphase step-down transformer, total transform three phase rectifier-direct current-are single-phase inverse
Become converter, single phase step-down transformer and grid-connected power generation system；
The primary side of the triphase step-down transformer is connected to three phase network, and the total transform three phase rectifier-direct current-is single-phase
The input terminal of inverter is connected with triphase step-down transformer secondary side, the total transform three phase rectifier-direct current-single-phase inversion
The output end of converter is connected with the input terminal of single phase step-down transformer, and the single phase step-down transformer output end is connected across traction
In power supply system between supply arm and rail, the grid-connected power generation system is connected to the output end of single phase step-down transformer parallel.
Further, distinguishing in the primary side in triphase step-down transformer and the output end of grid-connected power generation system
It is provided with bidirectional multifunctional four-quadrant kilowatt-hour meter, for measuring the total generated energy of generation of electricity by new energy device, to the anti-of three phase network
Power transmission amount and the electric energy provided to traction load.
Further, the grid-connected power generation system includes generation of electricity by new energy device, fairing, DC support electricity
Appearance, three-phase-single-phase PWM current transformer, step-up transformer, energy storage device, energy conversion device and coordination control unit, the new energy
Source generating set output end is connected with fairing input terminal, the input terminal of the energy storage device connection energy conversion device, institute
It states energy conversion device DC output end and is commonly connected to public direct current Support Capacitor, the support electricity with fairing output end
Appearance is connected through three-phase-single-phase PWM current transformer with step-up transformer；The coordination control unit is sent out by controlling bus and new energy
Electric installation, fairing, three-phase-single-phase PWM current transformer are connected with energy conversion device control side, monitor in real time and regulate and control each portion
Divide operating status and dynamical output.
Described its energy of generation of electricity by new energy device includes but are not limited to wind, light, biochemistry energy, water energy, gas fuel
Distributed form of power also includes other multi-source complementation energy forms；The energy storage device includes batteries to store energy, superconduction
The various energy storage such as energy storage, super capacitor energy-storage, flywheel energy storage and its hybrid energy-storing form.
Turn gas P2G conversion equipments, electricity turn hot P2H conversion equipments or friendship further, the energy conversion device is electricity
The means of non-electric energy sources conversion equipment of mutual formula.
Using the advantageous effect of the technical program：
The utility model recycles regenerative braking electric energy by controlling energy storage device, not only avoids related power quality
Problem can also bring additional income；Coordinate to control by generation of electricity by new energy device and energy storage, is promoting new energy consumption
While, station equipment upgrading pressure can be alleviated to the basic charge as per installed capacity of traction load peak clipping and then reduction traction side；
The utility model is for traction side：It, being capable of effective reclaiming while realizing railway system's Green Development
The energy of brake portion avoids the power quality problem introduced by regenerative braking operating mode；Peak clipping, drop can be carried out to traction load
The capacity and maximum demand of low total transform three phase rectifier-direct current-single-phase inversion converter, to reduce the substantially electric of traction side
Take, alleviates station equipment upgrading pressure；
The utility model is for new energy supply side：Be conducive to the consumption nearby of regenerative resource, while the system recycled
Electrokinetic energy can bring additional income.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of new energy supply system for through traction power supply of the utility model；
Fig. 2 is the structural schematic diagram of grid-connected power generation system in the utility model；
Wherein, 1 is three phase network, and 2 be triphase step-down transformer, and 3 be that total transform three phase rectifier-direct current-single-phase inversion becomes
Parallel operation, 4 be single phase step-down transformer, and 5 be grid-connected power generation system, and 6 be supply arm, and 7 be rail, and 8 be traction load, and 9 be double
To multi-functional four-quadrant kilowatt-hour meter；50 be generation of electricity by new energy device, and 51 be fairing, and 52 be DC support capacitance, and 53 be three
Phase-single-phase PWM current transformer, 54 be step-up transformer, and 55 be energy storage device, and 56 energy conversion devices, 57 coordinate control unit.
Specific implementation mode
In order to keep the purpose, technical scheme and advantage of utility model clearer, below in conjunction with the accompanying drawings to the utility model
It is further elaborated.
In the present embodiment, shown in Figure 1, a kind of new energy supply system for through traction power supply, including
It is through tractive power supply system, triphase step-down transformer 2, total transform three phase rectifier-direct current-single-phase inversion converter 3, single-phase
Step-down transformer 4 and grid-connected power generation system 5；
The primary side of the triphase step-down transformer 2 is connected to three phase network 1, and the total transform three phase rectifier-direct current-is mono-
The input terminal of phase inverter 3 is connected with 2 secondary side of triphase step-down transformer, and the total transform three phase rectifier-direct current-is single-phase
The output end of inverter 3 is connected with the input terminal of single phase step-down transformer 4,4 output end of the single phase step-down transformer across
It is connected in tractive power supply system between supply arm 6 and rail 7, the grid-connected power generation system 5 is connected to phase buck transformation parallel
The output end of device 4.
As the prioritization scheme of above-described embodiment, in the primary side in triphase step-down transformer 2 and generation of electricity by new energy
The output end of system 5 is respectively arranged with bidirectional multifunctional four-quadrant kilowatt-hour meter 9, the hair total for measuring generation of electricity by new energy device 50
Electricity, the anti-power transmission amount to three phase network 1 and the electric energy to the offer of traction load 8.
As the prioritization scheme of above-described embodiment, as shown in Fig. 2, the grid-connected power generation system 5 includes generation of electricity by new energy
Device 50, fairing 51, DC support capacitance 52, three-phase-single-phase PWM current transformer 53, step-up transformer 54, energy storage device
55, energy conversion device 56 and coordination control unit 57,50 output end of generation of electricity by new energy device are inputted with fairing 51
End is connected, and the energy storage device 55 connects the input terminal of energy conversion device 56,56 DC output end of the energy conversion device
It is commonly connected to common DC support capacitance 52 with 51 output end of fairing, the Support Capacitor becomes through three-phase-single-phase PWM
Stream device 53 is connected with step-up transformer 54；The coordination control unit 57 passes through controlling bus and generation of electricity by new energy device 50, whole
Stream device 51, three-phase-single-phase PWM current transformer 53 and energy conversion device 56 control side and are connected, and monitor in real time and regulate and control each section
Operating status and dynamical output.
50 its energy of the generation of electricity by new energy device includes but are not limited to wind, light, biochemistry energy, water energy, combustion gas combustion
Oily distributed form of power also includes other multi-source complementation energy forms；The energy storage device 55 include batteries to store energy,
The various energy storage such as superconducting energy storage, super capacitor energy-storage, flywheel energy storage and its hybrid energy-storing form.
Wherein, the energy conversion device 56 is that electricity turns gas P2G conversion equipments, electricity turns hot P2H conversion equipments or interactive mode
Means of non-electric energy sources conversion equipment.
In order to be better understood from the utility model, primary complete description is made to the operation principle of the utility model below：
The utility model recycles regenerative braking electric energy by controlling energy storage device 55, not only avoids related electric energy matter
Amount problem can also bring additional income；Coordinate to control by generation of electricity by new energy device 50 and energy storage, is promoting new energy
While consumption, station equipment upgrading pressure can be alleviated to the basic charge as per installed capacity of 8 peak clipping of traction load and then reduction traction side
Power.
Basic principles, main features, and advantages of the present invention has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (4)
1. a kind of new energy supply system for through traction power supply, which is characterized in that including through traction power supply
System, triphase step-down transformer (2), total transform three phase rectifier-direct current-single-phase inversion converter (3), single phase step-down transformer
(4) and grid-connected power generation system (5)；
The primary side of the triphase step-down transformer (2) is connected to three phase network (1), and the total transform three phase rectifier-direct current-is mono-
The input terminal of phase inverter (3) is connected with triphase step-down transformer (2) secondary side, the total transform three phase rectifier-direct current-
The output end of single-phase inversion converter (3) is connected with the input terminal of single phase step-down transformer (4), the single phase step-down transformer
(4) output end is connected across between supply arm in tractive power supply system (6) and rail (7), and the grid-connected power generation system (5) is parallel
It is connected to the output end of single phase step-down transformer (4).
2. a kind of new energy supply system for through traction power supply according to claim 1, which is characterized in that
It is described to be respectively arranged with two-way more work(in the primary side of triphase step-down transformer (2) and the output end of grid-connected power generation system (5)
It can four-quadrant kilowatt-hour meter (9).
3. a kind of new energy supply system for through traction power supply according to claim 1 or 2, feature exist
In, the grid-connected power generation system (5) include generation of electricity by new energy device (50), fairing (51), DC support capacitance (52),
Three-phase-single-phase PWM current transformer (53), step-up transformer (54), energy storage device (55), energy conversion device (56) and coordination control
Unit (57), generation of electricity by new energy device (50) output end are connected with fairing (51) input terminal, the energy storage device
(55) input terminal of connection energy conversion device (56), energy conversion device (56) DC output end and fairing (51)
Output end is commonly connected to common DC support capacitance (52), the Support Capacitor through three-phase-single-phase PWM current transformer (53) with
Step-up transformer (54) is connected；The coordination control unit (57) passes through controlling bus and generation of electricity by new energy device (50), rectification
Device (51), three-phase-single-phase PWM current transformer (53) are connected with energy conversion device (56) control side.
4. a kind of new energy supply system for through traction power supply according to claim 3, which is characterized in that institute
It is that electricity turns gas P2G conversion equipments, electricity turns hot P2H conversion equipments or the means of non-electric energy sources conversion of interactive mode to state energy conversion device (56)
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820106870.0U CN207691448U (en) | 2018-01-23 | 2018-01-23 | A kind of new energy supply system for through traction power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820106870.0U CN207691448U (en) | 2018-01-23 | 2018-01-23 | A kind of new energy supply system for through traction power supply |
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| CN207691448U true CN207691448U (en) | 2018-08-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109606208A (en) * | 2019-01-11 | 2019-04-12 | 西南交通大学 | A kind of off-network railway traction power supply system and regulation method |
-
2018
- 2018-01-23 CN CN201820106870.0U patent/CN207691448U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109606208A (en) * | 2019-01-11 | 2019-04-12 | 西南交通大学 | A kind of off-network railway traction power supply system and regulation method |
| CN109606208B (en) * | 2019-01-11 | 2023-11-03 | 西南交通大学 | Off-grid railway traction power supply system and regulation and control method |
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