CN202608586U - Flexible traction power supply device of electrified railway - Google Patents
Flexible traction power supply device of electrified railway Download PDFInfo
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- CN202608586U CN202608586U CN 201220238675 CN201220238675U CN202608586U CN 202608586 U CN202608586 U CN 202608586U CN 201220238675 CN201220238675 CN 201220238675 CN 201220238675 U CN201220238675 U CN 201220238675U CN 202608586 U CN202608586 U CN 202608586U
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Abstract
The utility model discloses a flexible traction power supply device of an electrified railway. A traction power supply system is formed by a three-winding traction transformer, a contact system T line, a contact system F line, a track R, an autotransformer, a tapping connection switch arranged on the three-winding traction transformer and a contact system connection switch connected onto the contact system T line and the contact system F line. Selective connection of the switch can achieve a single-winding direct power supply mode with a strengthening line, a duplex winding parallel direct power supply mode with a strengthening line, a transformer middle tapped type Vx connection line 2*27.5kV AT power supply mode and a transformer middle tapping-free 55kV AT power supply mode. Flexible traction power supply can be achieved by using the device, the direct power supply mode can be adopted at an initial operation stage, invested transformer capacity can be reduced, the AT power supply mode can be adopted at a specified future date, the invested transformer capacity can be increased, and flexible control and economic operation of the traction power supply can be achieved.
Description
Affiliated technical field
The utility model belongs to electrified railway power supply equipment, specifically is electric railway traction power supply system operation scheme technical field.
Background technology
Far away, the recent transportation demand of the transportation demand of electrified railway fluctuates big, and general recent transportation demand is little, and transportation demand at a specified future date is big.Transportation demand is influenced by many-sides such as regional economy, macroeconomy also, causes the transportation demand of electrified railway to have certain fluctuation.Yet present railway traction power supply system operation scheme is remaining in deficiency aspect the adaptation railway transportation demand fluctuation property.If according to recent transportation demand design, then the transportation demand for middle long term is difficult to adapt to, and improvement cost is bigger; If according in, transportation demand at a specified future date design, then cause recent one-time investment and over-the-road expense bigger.
With the Beijing-Shanghai High-Speed Railway is the example explanation.According to the transportation demand of three minutes tracking interval at a specified future date in the Beijing-Shanghai High-Speed Railway, tractive power supply system need adopt high-power transformer (63MVA---100MVA) with the AT power supply mode, 2 * 27.5kV AT power supply mode as shown in Figure 1.For further improving the line powering ability, improve the degree of utilization of voltage transformer, also can adopt 55kV AT power supply mode, like Fig. 2.Yet; As far as transportation demand in the near future; The power system capacity of actual demand is much smaller than the design capacity of system; Real-world operation shows that the load of traction transformer adopts small capacity transformer and direct feeding system with return wire formula (like Fig. 3) can satisfy system's operating needs less than 50% of the traction transformer design capacity.
Electric system is taked two electricity price systems to this type of electrified railway high capacity load, i.e. the electricity charge are made up of the electricity price electricity charge and basic charge as per installed capacity, and wherein the electricity price electricity charge are collected according to the actual consumption electric energy, and basic charge as per installed capacity is collected according to the actual installation capacity of voltage transformer.Owing to adopt high-power transformer, cause annual a large amount of basic charge as per installed capacities that increase.Like the about 1800MVA of Beijing-Shanghai High-Speed Railway all fronts traction transformer installed capacity, about 5.4 hundred million yuan of the basic charge as per installed capacity that need pay every year calculates according to the traction transformer installed capacity that reduces 50% in the recent period, can save 2.7 hundred million yuan of basic charge as per installed capacities every year.
Be demand at a specified future date in adapting to; Beijing-Shanghai High-Speed Railway promptly adopts the AT power supply mode in the recent period; Need establish about 60 self coupling substations, according to 1,000 ten thousand yuan of calculating of each self coupling substation, once investment needs 600,000,000 yuan; If adopt direct feeding system then can save initial stage 600,000,000 yuan of once investments at least, also save a large amount of self coupling substation over-the-road expenses.
In view of the transportation demand that electrified railway changes, a kind of tractive power supply system with flexible power supply ability to satisfy the power demands of different times, is once invested significant to the economical operation, the minimizing that realize electrified railway.
The utility model content
In view of the above shortcoming of prior art, the purpose of the utility model is, one one kinds of electrified railway flexible drawing electric supply installations are provided, and making it to have to provide the physical arrangements of economical operation selectively according to concrete operating needs.
The purpose of the utility model is to realize through following means.
A kind of electrified railway flexible drawing electric supply installation; It is characterized in that; Said traction power set is by three winding traction transformers, contact system T line, contact system F line and track R, autotransformer, the tap that is arranged on said three winding traction transformers connect switch: kT1, kT2, kT3, kT, kR, kF, kAT1, kAT2 and be connected the contact system of contact system T line with contact system F line be connected switch k1, k2 ... Kn constitutes.
Adopt the utility model can realize the flexible drawing power supply: initial operating stage can adopt direct feeding system, reduces and drops into transformer capacity; Can adopt the AT power supply mode long term, the transformer capacity of increasing input, and the flexible control and the economical operation of realization traction power supply, that is:
Switch through switch, form the flexible power supply mode, the direct feeding system of convertible high capacity AT power supply mode and low capacity promptly is provided, can the power supply mode that adapt be provided according to the transportation demand conversion.
One, switches through switch, provide disposable traction transformer to drop into capacity, adopt the simplex winding direct feeding system in the recent period, can adopt duplex winding parallel connection direct feeding system or AT power supply mode long term, save the basic charge as per installed capacity at initial stage and once investment.
Two, under the direct feeding system, negative feeder and contact wire are in parallel, and have reduced system impedance, and the direct feeding system with respect to general has improved power supply capacity.
Three, under the AT power supply mode, track and traction transformer centre tap are unsettled, can improve traction transformer winding utilization and power supply capacity.
Description of drawings:
Fig. 1 is existing technological 2 * 27.5kV AT power supply mode figure.
Fig. 2 is existing technological 55kV AT power supply mode figure.
Fig. 3 is existing direct feeding system with return wire formula figure.
Fig. 4 is the utility model electrified railway flexible drawing electric supply installation erection plan.
Fig. 5 is the utility model embodiment band line feeder simplex winding direct feeding system figure.
Fig. 6 is the utility model embodiment band line feeder duplex winding parallel connection direct feeding system figure.
Fig. 7 is the utility model embodiment voltage transformer centre tap formula Vx wiring AT power supply mode figure.
Fig. 8 is no tapped 55kV AT power supply mode figure in the middle of the utility model embodiment voltage transformer.
The specific embodiment
Below in conjunction with accompanying drawing and practical implementation the utility model is further described.
Fig. 5 illustrates the simplex winding direct feeding system embodiment of the band line feeder of the utility model.The specific embodiment is shown in the table 1.
Table 1
| Switch | ?kT1 | kT2 | kT3 | kT | kR | kF | kAT1 | kAT2 | k1……kn |
| State | Divide | Divide | Divide | Close | Close | Divide | Divide | Divide | Close |
Form the simplex winding direct feeding system of band line feeder.Under this power supply mode, the F line has reduced system impedance as line feeder usefulness, significantly increase with respect to the power supply capacity of existing direct feeding system, with AT power supply mode power supply capacity can be suitable basically.Because the fiberize of communication system at present, the communication countermeasures problem no longer is its subject matter in electrified railway, and therefore, this mode is in the strong AT power supply mode of alternative anti-communication interference ability, to save construction investment.
Embodiment 2
Fig. 6 illustrates the duplex winding parallel connection direct feeding system embodiment of the band line feeder of the utility model.The specific embodiment is as shown in table 2.
Table 2
| Switch | kT1 | kT2 | kT3 | kT | kR | kF | kAT1 | kAT2 | k1……kn |
| State | Close | Divide | Close | Close | Close | Divide | Divide | Divide | Close |
Two ports of a winding T1 in the three winding transformer are connected with track R with the T line respectively; Two ports of another winding T2 on three winding transformer time limit also are connected with track R with the T line respectively; T line and F line through connection lead K1, K2, K3 ... Kn connects, and forms the duplex winding parallel connection direct feeding system of band line feeder.Under this power supply mode, the F line has reduced system impedance as line feeder usefulness, significantly increase with respect to the power supply capacity of existing direct feeding system, with AT power supply mode power supply capacity can be suitable basically.Because the fiberize of communication system at present, the communication countermeasures problem no longer is its subject matter in electrified railway, and therefore, this mode is in the strong AT power supply mode of alternative anti-communication interference ability, to save construction investment.
Embodiment 3
Fig. 7 illustrates the voltage transformer centre tap formula Vx wiring AT power supply mode embodiment of the utility model.The specific embodiment is seen shown in the table 3.
Table 3
| Switch | ?kT1 | kT2 | kT3 | kT | kR | kF | kAT1 | kAT2 | k1……kn |
| State | Divide | Close | Divide | Close | Close | Close | Close | Close | Divide |
Two ports of a winding T1 in the three winding transformer are connected with track R with the T line respectively; Two ports of another winding T2 on three winding transformer time limit also respectively with track R and F wire joint; Autotransformer is set along the line at a certain distance; Three ports of autotransformer link to each other with T, R, F respectively, form voltage transformer centre tap formula Vx wiring AT power supply mode.
Embodiment 4
Fig. 8 illustrates the middle no tapped 55kV AT power supply mode embodiment of voltage transformer of the utility model.The specific embodiment is seen shown in the table 4.
Table 4
| Switch | ?kT1 | kT2 | kT3 | kT | kR | kF | kAT1 | kAT2 | k1……kn |
| State | Divide | Close | Divide | Close | Divide | Close | Close | Close | Divide |
A winding T1 in the three winding transformer connects with another winding T2 on three winding transformer time limit; Two ports that the series connection back forms are connected with T line, F line respectively; Self coupling power transformation depressor is set along the line at a certain distance; Three ports of autotransformer link to each other with T, R, F respectively, form the middle no tap 55kV AT power supply mode of voltage transformer.
Claims (1)
1. electrified railway flexible drawing electric supply installation; It is characterized in that; Said traction power set is by three winding traction transformers, contact system T line, contact system F line and track R, autotransformer, the tap that is arranged on said three winding traction transformers connect switch: kT1, kT2, kT3, kT, kR, kF, kAT1, kAT2 and be connected the contact system of contact system T line with contact system F line be connected switch k1, k2 ... Kn constitutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220238675 CN202608586U (en) | 2012-05-25 | 2012-05-25 | Flexible traction power supply device of electrified railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220238675 CN202608586U (en) | 2012-05-25 | 2012-05-25 | Flexible traction power supply device of electrified railway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202608586U true CN202608586U (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220238675 Expired - Fee Related CN202608586U (en) | 2012-05-25 | 2012-05-25 | Flexible traction power supply device of electrified railway |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110077288A (en) * | 2019-04-16 | 2019-08-02 | 西南交通大学 | A kind of administrative region of a city railway traction power supply system method of supplying power to based on SVG |
-
2012
- 2012-05-25 CN CN 201220238675 patent/CN202608586U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110077288A (en) * | 2019-04-16 | 2019-08-02 | 西南交通大学 | A kind of administrative region of a city railway traction power supply system method of supplying power to based on SVG |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20150525 |
|
| EXPY | Termination of patent right or utility model |