CN208461466U - Urban Railway Substation power supply system - Google Patents
Urban Railway Substation power supply system Download PDFInfo
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- CN208461466U CN208461466U CN201820994465.7U CN201820994465U CN208461466U CN 208461466 U CN208461466 U CN 208461466U CN 201820994465 U CN201820994465 U CN 201820994465U CN 208461466 U CN208461466 U CN 208461466U
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Abstract
The utility model embodiment provides a kind of Urban Railway Substation power supply system, including bus power supply, single transformer, pulse wave rectifier circuit and low-tension switch cabinet；Transformer includes primary side winding, secondary side winding and secondary side auxiliary winding；Bus power supply is connect with primary side winding, and secondary side auxiliary winding is connect with low-tension switch cabinet, secondary side winding and pulse wave rectifier circuit connection.System provided by the embodiment of the utility model, it can be powered simultaneously to pulse wave rectifier circuit and low-tension switch cabinet using single transformer, compared to two transformers are powered to pulse wave rectifier circuit and low-tension switch cabinet respectively, reduce the space occupied of transformer in Urban Railway Substation power supply system, save the cost.
Description
Technical field
The utility model embodiment is related to field of track traffic, powers more particularly, to a kind of Urban Railway Substation
System.
Background technique
The urban transportation is become by electric system through grid, main transformer station's decompression, distribution network and traction
Electricity is depressured, the links such as the change of current (being converted to direct current), transmits electric power to the EMU of city rail Rapid-Transport Line road transport row
Whole power supply systems.The urban transportation generally includes two large divisions, i.e., transmits electric power to traction substation along the line
High reliability special external power supply system, and from DC traction substation after decompression, the change of current, to the direct current of EMU power supply
Tractive power supply system.Rail, trolleybus intelligent substation in, at least two transformers need to be usually set, therein one
A transformer is connected with the rectifying circuit, for powering for rectification circuit；Another transformer therein is connect with low-tension switch cabinet,
For providing power supply for low-tension switch cabinet.Since two transformers being at least arranged in substation, lead to the occupied area of substation
It is larger.
Utility model content
To solve the above-mentioned problems, the utility model embodiment provides one kind and overcomes the above problem or at least partly solve
The certainly Urban Railway Substation power supply system of the above problem.
The utility model embodiment provides a kind of Urban Railway Substation power supply system, which includes: bus power supply, list
A transformer, pulse wave rectifier circuit and low-tension switch cabinet；Transformer includes primary side winding, secondary side winding and secondary side auxiliary winding；
Bus power supply is connect with primary side winding, and secondary side auxiliary winding is connect with low-tension switch cabinet, and secondary side winding and pulse wave rectifier circuit connect
It connects.
Wherein, transformer includes multiple groups secondary side winding, and every group of secondary side winding is separately connected a pulse wave rectifier circuit.
Wherein, bus power supply is three-phase alternating-current supply, and transformer is three-phase transformer, and pulse wave rectifier circuit is three-phase bridge
Rectification circuit.
Wherein, three-phase bridge rectifier circuit is six pulse wave rectifier circuits.
Wherein, six pulse wave rectifier circuits include the first rectifier diode group and the second rectifier diode group, the first rectification two
Pole pipe group includes the first rectifier diode of three common cathodes connection, and the second rectifier diode group includes that three common-anodes connect
Second rectifier diode；The anode of three the first rectifier diodes is connect with the cathode of three the second rectifier diodes respectively, the
The cathode of the anode of one rectifier diode and the second rectifier diode is connect with secondary side winding.
Wherein, transformer includes two groups of secondary side windings, and every group of secondary side winding is separately connected a six pulse wave rectifier circuits, phase
Ying Di, two six pulse wave rectifier circuit in parallel form 12 pulsating wave rectification circuit.
Wherein, the anode of the cathode of the first rectifier diode and the second rectifier diode is connected with load respectively.
It should be understood that above general description and following detailed description be it is exemplary and explanatory, can not
Limit the utility model embodiment.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described.It should be evident that the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other attached drawings can also be obtained according to these figures.
Fig. 1 is the structural schematic diagram for the Urban Railway Substation power supply system that the prior art provides；
Fig. 2 is the structural schematic diagram of Urban Railway Substation power supply system provided by the embodiment of the utility model；
Fig. 3 is the 12 pulsating wave rectification circuit of Urban Railway Substation power supply system provided by the embodiment of the utility model
Structural schematic diagram.
In figure, 110: bus power supply；120: primary side winding；130: secondary side winding；140: secondary side auxiliary winding；150: pulse wave
Rectification circuit；160: low-tension switch cabinet.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, is explicitly described the technical scheme in the embodiment of the utility model, it is clear that described reality
Applying example is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, ability
It is practical new to belong to this for domain those of ordinary skill every other embodiment obtained without making creative work
The range of type protection.
In the description of the utility model embodiment, it should be noted that term " center ", "upper", "lower", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "inner", "outside" is orientation based on the figure or position
Relationship, be merely for convenience of description the utility model embodiment and simplify description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as implementing the utility model
The limitation of example.In addition, term " first ", " second ", " third " are used for description purposes only, it is not understood to indicate or imply phase
To importance.
In the description of the utility model embodiment, it should be noted that unless otherwise clearly defined and limited, term
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State concrete meaning of the term in the utility model embodiment.
Fig. 1 is the structural schematic diagram for the Urban Railway Substation power supply system that the prior art provides, as shown in Fig. 1, bus
Power supply 110 is connect with the primary side winding 120 of two transformers respectively.Secondary side winding 130 and the pulse wave rectifier electricity of one transformer
Road 150 connects, and the secondary side winding 130 of another transformer is connect with low-tension switch cabinet 160.To respectively to pulse wave rectifier circuit
150 and low-tension switch cabinet 160 power.It is larger in order to solve above-mentioned occupied area since the occupied area of two transformers is larger
The problem of, referring to fig. 2, the utility model embodiment provides a kind of Urban Railway Substation power supply system, including bus power supply
110, single transformer, pulse wave rectifier circuit 150 and low-tension switch cabinet 160；Transformer includes primary side winding 120, secondary side winding
130 and secondary side auxiliary winding 140；Bus power supply 110 is connect with primary side winding 120, secondary side auxiliary winding 140 and low-tension switch cabinet
160 connections, secondary side winding 130 are connect with pulse wave rectifier circuit 150.
Wherein, the quantity of secondary side winding 130 can be not construed as limiting this for one or more, the utility model embodiment.
Such as shown in Fig. 2, transformer may include two secondary side windings 130.It should be noted that the quantity of secondary side winding 130 is not
It is infinitely great, and should be rationally determined by the capacity of transformer.Secondary side auxiliary winding 140 can power for low-tension switch cabinet 160.
Therefore, by primary side winding 120 and each secondary side winding 130,140 electromagnetic induction of secondary side auxiliary winding, to make bus power supply 110
It can be by the secondary side winding 130 and secondary side auxiliary winding 140 of single transformer respectively to pulse wave rectifier circuit 150 and low pressure
Switchgear 160 is powered.
System provided by the embodiment of the utility model includes primary side winding, secondary side winding and secondary side by single transformer
Auxiliary winding, bus power supply are connect with primary side winding, and secondary side auxiliary winding is connect with low-tension switch cabinet, and secondary side winding and pulse wave are whole
Current circuit connection.It can be powered simultaneously to pulse wave rectifier circuit and low-tension switch cabinet using single transformer, compared to two
Transformer is powered to pulse wave rectifier circuit and low-tension switch cabinet respectively, reduces transformer in Urban Railway Substation power supply system
Space occupied, save the cost.
Content based on the above embodiment, as a kind of alternative embodiment, transformer includes multiple groups secondary side winding 130, often
Group secondary side winding 130 is separately connected a pulse wave rectifier circuit 150.Therefore, because single transformer includes multiple groups secondary side winding
130, each secondary side winding 130 can provide electric energy for a pulse wave rectifier circuit 150.Compared to only include one group of secondary side around
The transformer of group 130, can provide electric energy, power supply efficiency with higher simultaneously for multiple impulse commutation circuits.
Content based on the above embodiment, as a kind of alternative embodiment, bus power supply 110 is three-phase alternating-current supply, is become
Depressor is three-phase transformer, and pulse wave rectifier circuit 150 is three-phase bridge rectifier circuit.For example, if transformer includes two secondary sides
Winding 130, bus power supply 110 are the three-phase alternating-current supply of 10kV or 35kV, and transformer is three-phase transformer, then 10kV or 35kV
Three-phase alternating-current supply by three-phase transformer, by three-phase transformer two secondary side windings 130 by power voltage step down at 1.7kV with
Power respectively to two pulse wave rectifier circuits 150, secondary side auxiliary winding 140 further by power voltage step down at 380V to be opened to low pressure
Cabinet 160 is closed to power.
Content based on the above embodiment, as a kind of alternative embodiment, pulse wave rectifier circuit 150 is six pulse wave rectifiers electricity
Road 150.As a kind of alternative embodiment, a kind of six pulse wave rectifier circuits 150 are provided, comprising: six pulse wave rectifier circuits 150 include
First rectifier diode group and the second rectifier diode group, the first rectifier diode group include the first whole of three common cathodes connection
Diode is flowed, the second rectifier diode group includes the second rectifier diode of three common-anodes connection；Three first two poles of rectification
The anode of pipe is connect with the cathode of three the second rectifier diodes respectively, the anode of the first rectifier diode and the second two poles of rectification
The cathode of pipe is connect with secondary side winding 130.During the work time, the rectifier diode in each rectifying tube group successively takes turns conductance
It is logical.Also, between the first rectifier diode group and the second rectifier diode group, if the first rectifier diode Anodic connects exchange
Voltage value maximum first rectifier diode conducting, then the connect ac voltage of cathode is minimum in the second rectifier diode (or bears
At most) the second rectifier diode conducting.Also, any moment, the first rectifier diode group and the second rectifier diode group
In only one rectifier diode conducting, other rectifier diodes are not turned on.
Content based on the above embodiment, as a kind of alternative embodiment, transformer includes two groups of secondary side windings 130, often
Group secondary side winding 130 is separately connected a six pulse wave rectifier circuits 150, correspondingly, two six pulse wave rectifier circuits 150 group in parallel
At 12 pulsating wave rectification circuit.Specifically, referring to Fig. 3, a of one six pulse wave rectifier circuit 150 and secondary side winding 1301End, b1
End and c1End connection, a of another six pulse wave rectifiers circuit 150 and another secondary side winding 1302End, b2End and c2End connection.
Based on above-mentioned connection type, the secondary side double winding of transformer cooperates two six pulse wave rectifier circuits 150 to form 12 pulsating wave rectification
Circuit can carry out 12 pulsating wave rectification.Since harmonic pollution of the 12 pulsating wave rectification circuit to power grid is whole compared to six pulse waves
Current circuit can reduce 50%, therefore power quality can be improved.
Referring to Fig. 3, content based on the above embodiment, as a kind of alternative embodiment, the cathode of the first rectifier diode
And second rectifier diode anode respectively with load connect.Specifically, if two six pulse wave rectifier circuits 150 compose in parallel ten
Two pulse wave rectifier circuits then load the cathode and second respectively with the first rectifier diode of two six pulse wave rectifier circuits 150
The anode of rectifier diode connects.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement；And these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (7)
1. a kind of Urban Railway Substation power supply system, which is characterized in that including bus power supply, single transformer, pulse wave rectifier
Circuit and low-tension switch cabinet；The transformer includes primary side winding, secondary side winding and secondary side auxiliary winding；The bus power supply with
The primary side winding connection, the secondary side auxiliary winding are connect with the low-tension switch cabinet, the secondary side winding and the pulse wave
Rectification circuit connection.
2. system according to claim 1, which is characterized in that the transformer includes secondary side winding described in multiple groups, and every group
The secondary side winding is separately connected the pulse wave rectifier circuit.
3. system according to claim 2, which is characterized in that the bus power supply is three-phase alternating-current supply, the transformation
Device is three-phase transformer, and the pulse wave rectifier circuit is three-phase bridge rectifier circuit.
4. system according to claim 3, which is characterized in that the three-phase bridge rectifier circuit is six pulse wave rectifiers electricity
Road.
5. system according to claim 4, which is characterized in that the six pulse wave rectifiers circuit includes the first rectifier diode
Group and the second rectifier diode group, the first rectifier diode group include the first rectifier diode of three common cathodes connection,
The second rectifier diode group includes the second rectifier diode of three common-anodes connection；Three first rectifier diodes
Anode connect respectively with the cathode of three second rectifier diodes, the anode of first rectifier diode and described
The cathode of two rectifier diodes is connect with the secondary side winding.
6. system according to claim 5, which is characterized in that the transformer include two groups described in secondary side winding, every group
The secondary side winding is separately connected the six pulse wave rectifiers circuit, correspondingly, two six pulse wave rectifiers circuit in parallel
Form 12 pulsating wave rectification circuit.
7. system according to claim 5 or 6, which is characterized in that the cathode of first rectifier diode and described
The anode of two rectifier diodes is connected with load respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820994465.7U CN208461466U (en) | 2018-06-25 | 2018-06-25 | Urban Railway Substation power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820994465.7U CN208461466U (en) | 2018-06-25 | 2018-06-25 | Urban Railway Substation power supply system |
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| Publication Number | Publication Date |
|---|---|
| CN208461466U true CN208461466U (en) | 2019-02-01 |
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ID=65169064
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820994465.7U Active CN208461466U (en) | 2018-06-25 | 2018-06-25 | Urban Railway Substation power supply system |
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| CN (1) | CN208461466U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111210702A (en) * | 2020-03-03 | 2020-05-29 | 广州株电交通设备有限公司 | Subway traction power transformation system training platform |
| CN112018766A (en) * | 2020-09-21 | 2020-12-01 | 青岛中加特电气股份有限公司 | High-voltage power distribution cabinet |
-
2018
- 2018-06-25 CN CN201820994465.7U patent/CN208461466U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111210702A (en) * | 2020-03-03 | 2020-05-29 | 广州株电交通设备有限公司 | Subway traction power transformation system training platform |
| CN111210702B (en) * | 2020-03-03 | 2022-06-28 | 广州株电交通设备有限公司 | Subway traction power transformation system training platform |
| CN112018766A (en) * | 2020-09-21 | 2020-12-01 | 青岛中加特电气股份有限公司 | High-voltage power distribution cabinet |
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