CN204978289U - Novel electrified railway power conditioner device - Google Patents
Novel electrified railway power conditioner device Download PDFInfo
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- CN204978289U CN204978289U CN201520618511.XU CN201520618511U CN204978289U CN 204978289 U CN204978289 U CN 204978289U CN 201520618511 U CN201520618511 U CN 201520618511U CN 204978289 U CN204978289 U CN 204978289U
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Abstract
The utility model provides a novel electrified railway power conditioner device, cascade many level converter including isolation transformer, phase -shifting transformer, power unit tandem type, isolation transformer become three -phase electricity type skot scibner rule transformer for double -phase electricity, its input with pull power supply system and meet, its output is met with phase -shifting transformer, phase -shifting transformer for taking a percentage phase -shifting transformer more, and its input links to each other with the skot scibner rule transformer, and its output of taking a percentage cascades many level converter with the power unit tandem type and links to each other, the power unit tandem type cascade many level converter for the three -phase cascades many level converter, its rectification part is met with the phase -shifting transformer that takes a percentage more, filter outlet stabilizing the voltage is passed through in its output. In using electrified railway with it, can realize as that important loads such as railway from far -off regions station along the line communication, signal, driving and field force's life provide electric power and support, solve the part problem of not having reliable electric access on every side from far -off regions among the electric Railway.
Description
[technical field]
The utility model belongs to power electronic system application, particularly relates to a kind of Novel electric electrified railway power line cleaner.
[background technology]
The construction mileage of electric railway increases gradually in recent years, and the development of electric railway is filled with new power to the development in railway area along the line.Especially the building action of the plateau such as Xinjiang, Inner Mongol, Tibet, Qinghai, railway from far-off regions is particularly important, but give railway station along the line communication, signal, driving and ensure that the electric power supply of field staff's existence is abnormal difficult, particularly in unfrequented remote districts such as Gobi desert, plateau, desert, tundras, without reliable source of power access except railway traction power supply, the through circuit of railway is caused to lack power supply guarantee.
Current plateau, the measure that through line powering from far-off regions is conventional are the remote even overlength distance transmission of electricity of 10kV or 35kV, and this kind of mode increases line losses on the one hand, causes a large amount of energy dissipations; Also reduce through track power supply reliability on the other hand, increase the maintenance difficulties of circuit; Simultaneously for ensureing the quality of power supply of through circuit, also need to increase a large amount of electric energy quality compensating devices.
[utility model content]
In order to solve the problems referred to above that prior art exists, the utility model proposes a kind of Novel electric electrified railway power conditioner.This power conditioner supplies a difficult problem for through circuit along the line without reliable source of power access for plateau, railway from far-off regions, Power Electronic Technique is utilized to change out 10kV or the 35kV power supply of applicable through circuit use by traction circuit access two-phase electricity, solving the remote even overlength distance transmission of electricity of existing through circuit existence causes a large amount of loss and quality of power supply not high, and needs the problem dropping into a large amount of compensating device.
The technical scheme that the utility model solution prior art problem adopts is:
A kind of Novel electric electrified railway power conditioner, comprising: isolating transformer (1), phase shifting transformer (2) and power unit cascade type cascade multilevel converter (3); Described isolating transformer (1) its input end access tractive power supply system, mouth access phase shifting transformer (2), the tap of phase shifting transformer exports the power unit module being connected to cascade multilevel converter (3), and the output of cascade multilevel converter is the mouth of power supply.
Further, described isolating transformer (1) becomes three-phase electricity type Scott Transformer for two-phase electricity, its input end α, β access 27.5kV Traction networks both sides brachium pontis respectively, and common port G accesses Traction networks concentration line, and its mouth x, y, z end is linked into phase shifting transformer.
Further, described phase shifting transformer (2) is many taps phase shifting transformer, the x, y, z end that its input end becomes three-phase electricity type Scott Transformer with two-phase electricity is connected, and its tap outputs is connected with the power unit module of power unit cascade type cascade multilevel converter.
Further, described power unit cascade type cascade multilevel converter (3) is made up of power unit module (4) cascade, Y connection is connected between its three-phase, and it exports employing LC mode filter, electric capacity C branch road adopts Y connection, and C branch road star mid point is connected with multi-level converter star mid point.
Further, described power unit module (4) is made up of the uncontrollable rectifier bridge of three-phase, DC energy storage flat wave capacitor, single-phase full control H bridge; Wherein the input of the uncontrollable rectifier bridge of three-phase is connected with the mouth of many taps phase shifting transformer, and the uncontrollable rectifier bridge of three-phase and single-phase full H bridge of controlling are connected into dos-à-dos form by DC energy storage flat wave capacitor.
The beneficial effects of the utility model are as follows:
A kind of Novel electric electrified railway power conditioner of this practicality passes through technique scheme, and be applied to electric railway electric power supply system, can realize providing quality power to through track in electric railway, make signal in Along Railway, station communication, the electric load of driving and field staff's normal life obtains regular supply, avoid to ensure signal, communication, the problem that traffic safety etc. need remote even overlength distance to power, solve simultaneously and to be powered the wasting of resources caused by remote even overlength distance, decrease the O&M cost of circuit, reduce the fringe cost that remote power-feeding brings, and traction electric power 27.5kV side voltage fluctuation can not make the voltage fluctuation that cost power source exports substantially, therefore can be called " power conditioner ", this Novel electric electrified railway power conditioner has structure simply simultaneously, and control difficulty low, technical scheme is easy to the advantages such as realization.
[accompanying drawing explanation]
Fig. 1 is the topology example figure of the utility model embodiment
Fig. 2 is the utility model power unit module pie graph
[detailed description of the invention]
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figures 1 and 2:
The utility model embodiment provides a kind of Novel electric electrified railway power conditioner, comprising: isolating transformer (1), phase shifting transformer (2) and power unit cascade type cascade multilevel converter (3); Described isolating transformer (1) its input end access tractive power supply system, mouth access phase shifting transformer (2), the tap of phase shifting transformer exports the power unit module being connected to cascade multilevel converter (3), and the output of cascade multilevel converter is the mouth of power supply.
Concrete structure can be: described isolating transformer (1) becomes three-phase electricity type Scott Transformer for two-phase electricity, its input end α, β access 27.5kV Traction networks both sides brachium pontis respectively, common port G accesses Traction networks concentration line, its mouth x, y, z end is linked into phase shifting transformer, and output voltage can be 10kV.Described phase shifting transformer (2) is many taps phase shifting transformer, the x, y, z end that its input end becomes three-phase electricity type Scott Transformer with two-phase electricity is connected, its tap outputs is connected with the power unit module of power unit cascade type cascade multilevel converter, the voltage of mouth can be 690V, and phase shift angle determines according to the number of cascade module.Described power unit cascade type cascade multilevel converter (3) is made up of power unit module (4) cascade, cascade number can be 12 grades, Y connection is connected between its three-phase, and it exports employing LC mode filter, electric capacity C branch road adopts Y connection, and C branch road star mid point is connected with the star mid point of multi-level converter.According to cascade number, the number of taps of phase shifting transformer is 12 groups totally 36, and between group and group, phase shift angle can be 5 degree, and often organizing inside has three taps, and the three phasevoltage size that each tap exports, phase place are identical.Described power unit module (4) is made up of the uncontrollable rectifier bridge of three-phase, DC energy storage flat wave capacitor, single-phase full control H bridge; Wherein the input of the uncontrollable rectifier bridge of three-phase is connected with the mouth of many taps phase shifting transformer, and the uncontrollable rectifier bridge of three-phase and single-phase full H bridge of controlling are connected into dos-à-dos form by DC energy storage flat wave capacitor.After circuit, multi-level converter exports after filtering, and its output voltage can be 10kV.
When Novel electric electrified railway power conditioner described in the utility model is applied to the railway system, its concrete structure can be: traction substation obtains A by electric power networks 110kV or 220kV, B, C three-phase power is supplied, two phase voltages being converted to 27.5kV by traction transformer are powered to draught line two brachium pontis, and electric current is refluxed by Traction networks concentration line; Described Novel electric electrified railway power conditioner input end (namely two-phase electricity becomes the input end of three-phase electricity type Scott Transformer) accesses two of houlage network for leg of a bridge, common port G accesses the concentration line of Traction networks, and the through track load that the mouth (i.e. the mouth of cascade multilevel converter) of Novel electric electrified railway power conditioner is traction system is powered.
Because non-linear, the impact of locomotive load cause the voltage fluctuation of 27.5kV side usually, the related Scott Transformer that causes exports 10kV, phase shifting transformer output 690V side voltage fluctuation.Especially locomotive by time, low voltage can be caused due to heavy duty in 27.5kV side, and embodiment must have enough cascade number guarantees can stablize output in the utility model power conditioner 10kV side at lower voltages.By the introducing of the present embodiment, plateau can be solved, problem that railway from far-off regions lacks through track power supply along the line, avoiding through track to adopt overlength distance to power causes mass energy to waste, avoid dropping into the quality of power supply that a large amount of compensating device ensures through circuit, for the railway construction of plateau, remote districts is made contributions simultaneously.
Because the present embodiment transfers two phase voltages to three phasevoltage by Scott Transformer, and set up the structure of low voltage, low harmony wave by step-down phase shifting transformer, for the parts selections such as uncontrollable rectification, cascade structure provide convenient.The present embodiment has obvious advantage from aspects such as the features of the complexity of control realization, topological structure.Above content is in conjunction with concrete optimal technical scheme further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.
Claims (5)
1. a Novel electric electrified railway power line cleaner, comprising: isolating transformer (1), phase shifting transformer (2) and power unit cascade type cascade multilevel converter (3); Described isolating transformer (1) its input end access tractive power supply system, mouth access phase shifting transformer (2), the output of phase shifting transformer is connected to the power unit module of cascade multilevel converter (3), and the output of cascade multilevel converter is the mouth of power supply.
2. Novel electric electrified railway power line cleaner according to claim 1, it is characterized in that: described isolating transformer (1) becomes three-phase electricity type Scott Transformer for two-phase electricity, its input end α, β access 27.5kV Traction networks both sides brachium pontis respectively, common port G accesses Traction networks concentration line, and its mouth x, y, z end is linked into phase shifting transformer.
3. Novel electric electrified railway power line cleaner according to claim 2, it is characterized in that: described phase shifting transformer (2) is many taps phase shifting transformer, the x, y, z end that its input end becomes three-phase electricity type Scott Transformer with two-phase electricity is connected, and its tap outputs is connected with the power unit module of power unit cascade type cascade multilevel converter.
4. Novel electric electrified railway power line cleaner according to claim 3, it is characterized in that: described power unit cascade type cascade multilevel converter (3) is made up of power unit module (4) cascade, Y connection is connected between its three-phase, and it exports employing LC mode filter, electric capacity C branch road adopts Y connection, and C branch road star mid point is connected with multi-level converter star mid point.
5. Novel electric electrified railway power line cleaner according to claim 4, is characterized in that: described power unit module (4) is made up of the uncontrollable rectifier bridge of three-phase, DC energy storage flat wave capacitor, single-phase full control H bridge; Wherein the input of the uncontrollable rectifier bridge of three-phase is connected with the mouth of many taps phase shifting transformer, and the uncontrollable rectifier bridge of three-phase and single-phase full H bridge of controlling are connected into dos-à-dos form by DC energy storage flat wave capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520618511.XU CN204978289U (en) | 2015-08-17 | 2015-08-17 | Novel electrified railway power conditioner device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520618511.XU CN204978289U (en) | 2015-08-17 | 2015-08-17 | Novel electrified railway power conditioner device |
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| Publication Number | Publication Date |
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| CN204978289U true CN204978289U (en) | 2016-01-20 |
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| CN201520618511.XU Expired - Fee Related CN204978289U (en) | 2015-08-17 | 2015-08-17 | Novel electrified railway power conditioner device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533198A (en) * | 2016-12-28 | 2017-03-22 | 苑雪飞 | High-frequency transformer-based railway purification power supply device |
| CN107070251A (en) * | 2017-03-14 | 2017-08-18 | 珠海万力达电气自动化有限公司 | A kind of railway power line cleaner cooperative control system and method |
| CN108944578A (en) * | 2018-06-29 | 2018-12-07 | 中车长江车辆有限公司 | It is a kind of for the power supply unit of train, method of supplying power to and train |
| CN113364306A (en) * | 2021-06-18 | 2021-09-07 | 西南交通大学 | Two-phase-single-phase intersection direct-alternating cascade converter system |
-
2015
- 2015-08-17 CN CN201520618511.XU patent/CN204978289U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533198A (en) * | 2016-12-28 | 2017-03-22 | 苑雪飞 | High-frequency transformer-based railway purification power supply device |
| CN107070251A (en) * | 2017-03-14 | 2017-08-18 | 珠海万力达电气自动化有限公司 | A kind of railway power line cleaner cooperative control system and method |
| CN107070251B (en) * | 2017-03-14 | 2019-06-14 | 珠海万力达电气自动化有限公司 | A kind of cooperative control system and method for railway power line cleaner |
| CN108944578A (en) * | 2018-06-29 | 2018-12-07 | 中车长江车辆有限公司 | It is a kind of for the power supply unit of train, method of supplying power to and train |
| CN108944578B (en) * | 2018-06-29 | 2020-10-16 | 中车长江车辆有限公司 | Power supply device and power supply method for train and train |
| CN113364306A (en) * | 2021-06-18 | 2021-09-07 | 西南交通大学 | Two-phase-single-phase intersection direct-alternating cascade converter system |
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| CF01 | Termination of patent right due to non-payment of annual fee |