CN208134141U - A kind of independent iron core three-phase Vv wiring traction substation cophase supply construction - Google Patents
A kind of independent iron core three-phase Vv wiring traction substation cophase supply construction Download PDFInfo
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- CN208134141U CN208134141U CN201820623918.5U CN201820623918U CN208134141U CN 208134141 U CN208134141 U CN 208134141U CN 201820623918 U CN201820623918 U CN 201820623918U CN 208134141 U CN208134141 U CN 208134141U
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Abstract
The utility model provides a kind of independent iron core three-phase Vv wiring traction substation cophase supply construction, is related to Traction Substation of Electric Railway power supply technique field.Independent iron core three-phase Vv Connection Traction Transformer is used with phase connection form, and two traction buses merge into same traction bus by breaker, cancel the electric split-phase of traction substation outlet；Same-phase compensation device is set between three-phase electrical power system and traction bus, negative phase-sequence is administered by acquisition traction busbar voltage and tractive feeder electric current real-time control same-phase compensation device.The system is suitable for attached wires of AC electrified railway cophase supply occasion；Independent two primary side winding of iron core three-phase Vv tractive transformer can be with isolated operation, also can parallel running；It is mainly used for electrified railway in-phase power supply transformation.
Description
Technical field
The utility model relates to Traction Substation of Electric Railway power supply technique fields.
Background technique
Existing Vv wiring tractive power supply system is powered using left and right supply arm out-phase, is set in traction substation outlet
Set electric split-phase link.There are three outstanding problems when realizing high speed, heavily loaded electric propulsion for this power supply mode：(1) split-phase is crossed
Problem.It is complicated to cross split-phase motor electric process, structure is complicated for automatic neutral-section passing device, acts frequently, and the service life is short, and reliability is low, and
Automatic passing over of neutral section failure then causes heterophase short-circuit at traction substation.(2) train speed and loss of traction caused by electric split-phase
Problem.Crossing phase process has one section of neutral section, i.e. non-Electric region, seriously affects tractive power supply system overall performance, loss of traction,
Speed reduces, while being lost electric braking power.In special circumstances as the electric split-phase being arranged on steep gradient be easy to cause heavy duty
Stop on train slope.Electric split-phase has become link at a high speed, most weak in heavy haul railway tractive power supply system.(3) based on negative phase-sequence
Power quality problem.The electric railway traction power supply system method of operation is mainly determined by the tractive transformer mode of connection at present,
Wherein in addition to pure single-phase wiring, other are all two-phase (out-phase) power supplies, and relatively for three-phase electrical power system, traction load has not
Symmetry.At a high speed, continuous increase of heavy haul train traction power and freight volume also makes the negative phase-sequence problem in power quality more prominent.
Electric railway crosses split-phase problem and power quality problem and seriously limits the further development of high speed, heavy haul railway.
Three-phase Vv Connection Traction Transformer refers to two independent iron cores, single-phase transformer combination in a cabinet and structure
At a kind of tractive transformer of Vv wiring.
Transformer allows parallel running when meeting following four condition.(1) no-load voltage ratio is equal；(2) joint group serial number phase
Together；(3) short-circuit voltage is identical；(4) capacity difference is no more than 3:1.Single-phase traction transformer, which meets above-mentioned condition, can be implemented parallel connection.
Two single-phase transformers in the three-phase Vv Connection Traction Transformer of independent iron core meet above-mentioned condition, parallel running easy to accomplish
Transformation.
The utility model proposes by independent iron core three-phase Vv wiring traction substation power supply plan, cancel electric substation exit
Split-phase, while administering negative phase-sequence, achieve the effect that Technological Economy and excellent.
Utility model content
The purpose of this utility model is just to provide a kind of independent iron core three-phase Vv wiring traction substation cophase supply construction,
It can efficiently solve the problem of electric substation exit must be provided with split-phase, realize cophase supply, while administering negative phase-sequence, reach skill
Art economy and excellent.
The utility model solves its technical problem, and used technical solution is：It is led including independent iron core three-phase Vv wiring
Draw transformer, traction bus one and traction bus two, three-phase Yd wiring transformer and single-phase AC-DC-AC converter, independent iron core three
One end of phase Vv Connection Traction Transformer primary side winding one is connected to A phase through breaker one, another is terminated at C phase, independent iron core three
One end of phase Vv Connection Traction Transformer primary side winding two is connected to A phase through breaker two, another is terminated at C phase；Independent iron core three
One end of the traction side winding one of phase Vv Connection Traction Transformer is connected to traction bus one through breaker three, another to be terminated at rail
And ground, one end of the traction side winding two of independent iron core three-phase Vv Connection Traction Transformer are connected to traction bus through breaker four
Two, it is another to be terminated at rail and ground；It draws and is connected between bus one and traction bus two by breaker five；Three-phase Yd wiring becomes
The primary side of depressor is connected to Vv Connection Traction Transformer primary side ABC three-phase voltage；Secondary side winding corresponding with primary side B phase winding is connected to
Two end rt is connected to an exchange side ports P1 of the straight alternating flow device of blow-up, another exchange side ports of single-phase AC-DC-AC converter
An end of P2 is connected to traction bus two, another to be terminated at rail and ground；Voltage transformer is set on traction bus two, draws bus
One draws tractive feeder, and current transformer, the secondary side measurement end of voltage transformer and current transformer are set on tractive feeder
It is connected with the control signal of single-phase AC-DC-AC converter；Single-phase AC-DC-AC converter acquires electricity by its control signal in real time
Mutual inductor and current transformer is pressed to measure end signal.
Two isolated operation of primary side winding one and primary side winding of independent iron core three-phase Vv Connection Traction Transformer, or it is in parallel
Operation.
Two groups of primary side windings of independent iron core three-phase Vv Connection Traction Transformer 1 also can be connected to B phase, the other end in an end simultaneously
It is connected to C phase or an end is connected to A phase, another is terminated at B phase.At this point, the primary side of three-phase Yd wiring transformer is still connected to ABC tri-
Phase voltage；Secondary side wiring handles accordingly, that is, when two groups of primary side windings of tractive transformer are connected to BC, and is connected to primary side A phase
Corresponding two end secondary side winding st of winding is connected to the exchange side P1 of the straight alternating flow device of blow-up；When two groups of primary sides of tractive transformer
Around when being connected to AB, two end secondary side winding rs corresponding with primary side C phase winding is connected to is connected to the exchange of the straight alternating flow device of blow-up
Side P1.
If the negative phase-sequence examination capacity of the method for operation described in independent iron core three-phase Vv Connection Traction Transformer is S1, independent iron core
Negative phase-sequence examination capacity when three-phase Vv Connection Traction Transformer constitutes out-phase power supply is S2, then the capacity S3 of same-phase compensation device 3
For ︱ S1-S2 ︱.Wherein, negative phase-sequence examination capacity refers to the capacity measured by the method for national regulations.
The working principle of the utility model is：The length of cophase supply electric arm be equal to original two out-phase power supply arm lengths it
With total traction load is more steady, and the capacity utilization of tractive transformer can be improved；The regeneration of the above-listed vehicle of cophase supply electric arm
It brakes electric energy to utilize the tractor-trailer train preferentially gone together, the power supply of power grid and tractive transformer can be reduced by being increased without cost
Amount；Same-phase compensation device can reduce negative phase-sequence；The single-phase winding of two sets of independent iron core three-phase Vv wiring constitutes cophase supply, utilizes
Left and right supply arm bus merges into same traction bus by breaker, and then cancels the electric split-phase of traction substation, obtains skill
Art and economical effects.
Compared with prior art, the utility model has the beneficial effects that：
1, cophase supply can be achieved, cancel the electric split-phase of traction substation outlet；The regeneration system of the above-listed vehicle of cophase supply electric arm
Electrokinetic energy utilizes the tractor-trailer train preferentially gone together, and is increased without cost, has Best Economy.
2, the negative phase-sequence of traction load generation can be reduced.
3, scheme is simple and reliable, easy to implement.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment.
Specific embodiment
The utility model will be further described with reference to the accompanying drawings and detailed description.
Embodiment
Fig. 1 is shown, and specific embodiment of the present utility model is：Including independent iron core three-phase Vv Connection Traction Transformer 1,
Draw bus 1 and traction bus 23, three-phase Yd wiring transformer 4 and single-phase AC-DC-AC converter 5, independent iron core three-phase Vv
One end of 1 primary side winding 1 of Connection Traction Transformer is connected to A phase through breaker 1, another is terminated at C phase, independent iron core three-phase
One end of 1 primary side winding 27 of Vv Connection Traction Transformer is connected to A phase through breaker 29, another is terminated at C phase；Independent iron core three
One end of the traction side winding 1 of phase Vv Connection Traction Transformer 1 is connected to traction bus 1, another termination through breaker 3 12
In rail 14 and ground, one end of the traction side winding 2 11 of independent iron core three-phase Vv Connection Traction Transformer 1 is through breaker 4 13
It is connected to traction bus 23, it is another to be terminated at rail 14 and ground；It draws and passes through breaker five between bus 1 and traction bus 23
15 are connected；The primary side of three-phase Yd wiring transformer 4 is connected to Vv Connection Traction Transformer primary side ABC three-phase voltage；Secondary side be connected to
Corresponding two end winding rt of primary side B phase winding is connected to an exchange side ports P1 of the straight alternating flow device 5 of blow-up, and blow-up is directly handed over
An end of another exchange side ports P2 of current transformer 5 is connected to traction bus 23, another to be terminated at rail 14 and ground；It is female in traction
Voltage transformer 16 is set on line 23, traction bus 1 draws tractive feeder 17, current transformer 18 is set on tractive feeder 17,
The secondary side measurement end of voltage transformer 16 and current transformer 18 is connected with the control signal of single-phase AC-DC-AC converter 5；
Single-phase AC-DC-AC converter 5 is believed by the real-time collection voltages mutual inductor 16 of its control signal and 18 measurement end of current transformer
Number.
The primary side winding 1 and primary side winding 27 of independent iron core three-phase Vv Connection Traction Transformer 1 can with isolated operation,
It also can parallel running.If the negative phase-sequence examination capacity of the method for operation described in independent iron core three-phase Vv Connection Traction Transformer is S1, solely
Negative phase-sequence examination capacity when vertical iron core three-phase Vv Connection Traction Transformer constitutes out-phase power supply is S2, then same-phase compensation device 3
Capacity S3 is ︱ S1-S2 ︱.Wherein, negative phase-sequence examination capacity refers to the capacity measured by the method for national regulations.According to this reality
With novel principle, due to the extension of cophase supply electric arm, traction transformer capacity utilization rate is improved, and colleague's train regeneration system
Electrokinetic energy preferentially utilizes, and therefore, tractive transformer isolated operation can be considered in railway initial operation stage, when freight volume in the future increases again
Consider also it is contemplated that parallel running.
Two groups of primary side windings of independent iron core three-phase Vv Connection Traction Transformer 1 also can be connected to B phase, the other end in an end simultaneously
It is connected to C phase or an end is connected to A phase, another is terminated at B phase.At this point, the primary side of three-phase Yd wiring transformer 4 is still connected to ABC tri-
Phase voltage；Secondary side wiring handles accordingly, i.e., when two groups of primary side windings of tractive transformer 1 are connected to BC, and is connected to primary side A phase
Corresponding two end secondary side winding st of winding is connected to the exchange side P1 of the straight alternating flow device 5 of blow-up；Two groups when tractive transformer 1 are former
While two end secondary side winding rs corresponding with primary side C phase winding is connected to is connected to the friendship of the straight alternating flow device 5 of blow-up around when being connected to AB
Flow side P1.
Obviously, if the exchange side P2 of single-phase AC-DC-AC converter 5 terminal for being connected to traction bus 23 is connected to traction bus
1 and by voltage transformer 16 be connected to traction bus 1, also can reach identical effect.
Claims (2)
1. a kind of independent iron core three-phase Vv wiring traction substation cophase supply construction, including independent iron core three-phase Vv wiring traction
Transformer (1), traction bus one (2) and traction bus two (3), three-phase Yd wiring transformer (4) and single-phase AC-DC-AC converter
(5), it is characterised in that：One end of independent iron core three-phase Vv Connection Traction Transformer (1) primary side winding one (6) is through breaker one
(8) be connected to A phase, it is another be terminated at C phase, one end warp of independent iron core three-phase Vv Connection Traction Transformer (1) primary side winding two (7)
Breaker two (9) is connected to A phase, another is terminated at C phase；The traction side winding of independent iron core three-phase Vv Connection Traction Transformer (1)
One end of one (10) is connected to traction bus one (2) through breaker three (12), another to be terminated at rail (14) and ground, independent iron core three
One end of the traction side winding two (11) of phase Vv Connection Traction Transformer (1) is connected to traction bus two (3) through breaker four (13),
It is another to be terminated at rail (14) and ground；It draws and is connected between bus one (2) and traction bus two (3) by breaker five (15)；
The primary side of three-phase Yd wiring transformer (4) is connected to Vv Connection Traction Transformer ABC three-phase voltage；Secondary side be connected to primary side B phase around
Corresponding two end winding rt of group is connected to an exchange side ports P1 of the straight alternating flow device (5) of blow-up, single-phase AC-DC-AC converter
(5) end of another exchange side ports P2 is connected to traction bus two (3), another to be terminated at rail (14) and ground；It is female in traction
It is set on line two (3) voltage transformer (16), tractive feeder (17) are drawn in traction bus one (2), set electricity on tractive feeder (17)
The secondary side measurement end of current transformer (18), voltage transformer (16) and current transformer (18) and single-phase AC-DC-AC converter
(5) control signal is connected；Single-phase AC-DC-AC converter (5) passes through the real-time collection voltages mutual inductor (16) of its control signal
End signal is measured with current transformer (18).
2. a kind of independent iron core three-phase Vv wiring traction substation cophase supply construction according to claim 1, feature
It is：The primary side winding one (6) and primary side winding two (7) isolated operation of independent iron core three-phase Vv Connection Traction Transformer (1), or
Person's parallel running.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820623918.5U CN208134141U (en) | 2018-04-26 | 2018-04-26 | A kind of independent iron core three-phase Vv wiring traction substation cophase supply construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820623918.5U CN208134141U (en) | 2018-04-26 | 2018-04-26 | A kind of independent iron core three-phase Vv wiring traction substation cophase supply construction |
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| Publication Number | Publication Date |
|---|---|
| CN208134141U true CN208134141U (en) | 2018-11-23 |
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| CN201820623918.5U Active CN208134141U (en) | 2018-04-26 | 2018-04-26 | A kind of independent iron core three-phase Vv wiring traction substation cophase supply construction |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114498718A (en) * | 2022-01-25 | 2022-05-13 | 西南交通大学 | Flexible traction substation and control method thereof |
| CN114928121A (en) * | 2022-04-21 | 2022-08-19 | 西南交通大学 | Alternating current and direct current traction power supply structure and control method for electrified railway |
-
2018
- 2018-04-26 CN CN201820623918.5U patent/CN208134141U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114498718A (en) * | 2022-01-25 | 2022-05-13 | 西南交通大学 | Flexible traction substation and control method thereof |
| CN114928121A (en) * | 2022-04-21 | 2022-08-19 | 西南交通大学 | Alternating current and direct current traction power supply structure and control method for electrified railway |
| CN114928121B (en) * | 2022-04-21 | 2023-03-14 | 西南交通大学 | Alternating current-direct current traction power supply structure and control method for electrified railway |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 014000 No.1, alding street, Kundulun District, Baotou City, Inner Mongolia Autonomous Region Patentee after: Guoneng Baoshen Railway Group Co.,Ltd. Address before: Room 208, 2 / F, Jinchuang building, Jinchuang headquarters economic Park, Jiuyuan District, Baotou City, Inner Mongolia Autonomous Region Patentee before: SHENHUA BAOSHEN RAILWAY GROUP Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220608 Address after: 014000 No.1, alding street, Kundulun District, Baotou City, Inner Mongolia Autonomous Region Patentee after: Guoneng Baoshen Railway Group Co.,Ltd. Patentee after: Guoneng xinzhun Railway Co.,Ltd. Address before: 014000 No.1, alding street, Kundulun District, Baotou City, Inner Mongolia Autonomous Region Patentee before: Guoneng Baoshen Railway Group Co.,Ltd. |
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| TR01 | Transfer of patent right |