CN204774710U - Pull power supply system and orbital ice -melt device - Google Patents
Pull power supply system and orbital ice -melt device Download PDFInfo
- Publication number
- CN204774710U CN204774710U CN201520504933.4U CN201520504933U CN204774710U CN 204774710 U CN204774710 U CN 204774710U CN 201520504933 U CN201520504933 U CN 201520504933U CN 204774710 U CN204774710 U CN 204774710U
- Authority
- CN
- China
- Prior art keywords
- rail
- ice
- walking
- melt
- contact rail
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a pull power supply system and orbital ice -melt device, including a plurality of direct current ice -melt devices, many piece -root graftings rail -engaging connecting wire, many walk rail coupling line, a plurality of parallel switches, direct current ice -melt device, a piece -root grafting rail -engaging connecting wire, a walking rail coupling line, a change over switch constitute for a set of ice -melt unit, correspond to set up in a department of electric substation of rolling stock section, every piece -root grafting rail -engaging connecting wire is established ties the condact rail that goes upward of its place department of electric substation of rolling stock section with down condact rail, go upward the condact rail and still establish ties with direct current ice -melt device through change over switch with down condact rail, forms condact rail return circuit unit, the in like manner forms walking rail return circuit unit, every direct current ice -melt device switches between condact rail return circuit unit and walking rail return circuit unit through change over switch to be connected in order to replace the power supply, the utility model provides a pull power supply system and orbital ice -melt device does not influence train normal operating, and the icing that is applicable to operating train is handled.
Description
Technical field
The utility model relates to technical field of rail traffic, refers to the deicing device of a kind of tractive power supply system and track especially.
Background technology
In recent years, the track traffic industry high speed developments such as Chinese high ferro, light rail, have become the requisite vehicle in people's daily life.Tractive power supply system and track there will be icing phenomenon under the conditions such as rugged environment temperature and humidity, and traction system icing will cause pantograph normally cannot get stream, will cause infringement or the fracture major accident of pantograph time serious.The icing how prevented or melt tractive power supply system and track be electrified railway must in the face of and the problem that solves.
Current, DC ice melting is the technology of the mature and feasible of generally acknowledging at present.This technology adopts silicon controlled rectifier as the convertor equipment of core usually, be aided with the parts such as smoothing reactor, alternating current filter, but after needing transmission line of electricity to exit operation, for icing circuit provides DC ice melting current, utilize the joule heat ice-melt that the equivalent resistance of transmission line of electricity is formed.The program must disconnect power supply after icing phenomenon is formed, and change system connection scheme formation ice melting current path, anti-icing and ice-melt cannot be realized under the prerequisite not affecting tractive power supply system supply regular power, therefore, if the program is applied to the electric power system of electrified railway, the normal operation of train will be affected; And, adopt independently transmission line of electricity, because it easily ruptures when extremely low temperature, ice-melt effect can be had influence on too, simultaneously DC ice-melting normally whole piece circuit use same deicing device, online path loss bad time, can cause whole piece circuit cannot ice-melt, thus cause larger loss; In addition, common deicing device only carries out ice-melt to contact rail, and does not usually carry out ice-melt to walking rail, can reduce the ice-melt efficiency of whole track like this.
Utility model content
In view of this, the purpose of this utility model is the deicing device proposing a kind of tractive power supply system and track, to avoid tractive power supply system and track to cause normally to get stream because of icing, affects the safety of train and runs on schedule; This deicing device, by when not affecting track and normally running, carries out ice-melt operation, especially can avoid when continuing to snow, and continues to form icing; This device is applicable to the icing process of light rail in running state, high-speed electric railway.
The tractive power supply system provided based on above-mentioned purpose the utility model and the deicing device of track, comprise multiple DC de-icing device, many contact rail connection leads, many walking rail connection leads, multiple parallel switches;
DC de-icing device, contact rail connection lead, walking rail connection lead, a change-over switch consist of one group of ice-melt unit, and correspondence is arranged at residing for car depot's power transformation;
Every root contact rail connection lead is by the upcoming contact rail residing for its place car depot power transformation and the series connection of descending contact rail, and meanwhile, upcoming contact rail and descending contact rail are also connected with DC de-icing device by change-over switch, thus form contact rail circuit units; Every root walking rail connection lead is by the up walking rail residing for its place car depot power transformation and the series connection of descending walking rail, and meanwhile, up walking rail and descending walking rail are also connected with DC de-icing device by change-over switch, thus form walking rail circuit units;
Each DC de-icing device switches connection to carry out interleaved power to contact rail circuit units and walking rail circuit units by change-over switch between contact rail circuit units and walking rail circuit units.
In some embodiments, the equivalent resistance of described upcoming contact rail and descending contact rail is much smaller than the equivalent resistance of train, and the equivalent resistance of described up walking rail and descending walking rail is also much smaller than the equivalent resistance of train; The voltage that described DC de-icing device provides is much smaller than the voltage travelling power supply.
In some embodiments, described deicing device also comprises: the circuit breaker of connecting with change-over switch being arranged on DC de-icing device side, is arranged on the first disconnector on contact rail connection lead, is arranged on the second disconnector on walking rail connection lead.
In some embodiments, described DC de-icing device comprises the source of AC, rectifier transformer, rectifier, the DC ice melting Control protection system that connect successively;
The alternating current of source of AC input ice-melt carries out voltage transformation to rectifier transformer and just exports ice-melt direct current (DC) after rectifier rectification, and described DC ice melting Control protection system carrys out adjusting circuit DC current by the Trigger Angle changing thyristor valve in deicing processes.
In some embodiments, described rectifier is made up of thyristor or IGBT device etc., adopts 6 pulsation or 12 pulsation or Three-phase PWM Voltage Rectifier, three plase alternating current is converted to direct current (DC).
In some embodiments, DC de-icing device power supply takes from source of AC, and this source of AC takes from the ac bus AC20kV mains side of the substation at the installation place of DC de-icing device.
As can be seen from above, the deicing device of the tractive power supply system that the utility model provides and track, by arranging one group of ice-melt unit at place of each substation of car depot, the upcoming contact rail at this place and the series connection of descending contact rail are formed contact rail circuit units, thus contact rail can be utilized to substitute original DC ice-melting directly to power ice-melt, without the need to increasing DC ice-melting in addition, DC ice-melting is there will not be to rupture the ice-melt fault caused, and the direct current resistance of formed like this DC ice melting snow contact rail circuit units is identical, input Constant Direct Current electric current, it is identical that the icing snow of the heat that the joule effect of the contact rail circuit units of track (wire) is completely produced to track (wire) surface carries out heat thawing effect, meanwhile, also by up walking rail and the series connection of descending walking rail, form walking rail loop, thus walking rail can be utilized directly to power ice-melt, improve ice-melt efficiency, and, DC de-icing device switches connection by change-over switch between contact rail circuit units and walking rail circuit units, thus alternate energisation ice-melt is carried out to contact rail circuit units and walking rail circuit units, make can not to disturb by circuit for generating between contact rail loop and walking rail loop, in addition, by locating design one group of ice-melt unit in substation of each car depot, when one of them ice-melt unit is damaged, can't have influence on the ice-melt of other sections, caused loss of breaking down is less, designed by foregoing circuit, realization is come and gone two-orbit ice-melt simultaneously by the deicing device of the tractive power supply system that the utility model provides and track, and ice-melt speed is fast, and device good economy performance.
Accompanying drawing explanation
The principle schematic equivalent circuit of the deicing device embodiment of the tractive power supply system that Fig. 1 provides for the utility model and track;
The circuit connection diagram in the contact rail loop of up-downgoing contact rail in the deicing device embodiment of the tractive power supply system that Fig. 2 provides for the utility model and track;
The principle schematic equivalent circuit in the walking rail loop of up-downgoing walking rail in the deicing device embodiment of the tractive power supply system that Fig. 3 provides for the utility model and track;
The principle schematic equivalent circuit in the contact rail loop of up-downgoing contact rail in the deicing device embodiment of the tractive power supply system that Fig. 4 provides for the utility model and track.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the utility model is further described.
It should be noted that, in the utility model embodiment, the statement of all uses " first " and " second " is all the parameters in order to the entity or non-equal distinguishing two same names non-equal, visible " first " " second " convenience only in order to state, should not be construed as the restriction to the utility model embodiment, subsequent embodiment illustrates no longer one by one to this.
The cardinal principle of DC ice melting is using icing circuit as load, applies direct supply, provides direct-current short circuit electric current to carry out heating wires line ice coating is melted by low voltage.With reference to accompanying drawing 1, the principle schematic equivalent circuit of the deicing device embodiment of the tractive power supply system provided for the utility model and track.
The deicing device of described tractive power supply system and track, comprises multiple DC de-icing device, many contact rail connection leads, many walking rail connection leads, multiple parallel switches;
DC de-icing device, contact rail connection lead, walking rail connection lead, a grid-connected switches set become one group of ice-melt unit, and correspondence is arranged at residing for car depot's power transformation; That is be provided with one group of ice-melt unit residing for the power transformation of each car depot;
Every root contact rail connection lead is by the upcoming contact rail residing for its place car depot power transformation and the series connection of descending contact rail, simultaneously, upcoming contact rail and descending contact rail are also connected with DC de-icing device by change-over switch (in Fig. 1, the first K switch 1 and second switch K2 are the equivalent switch of change-over switch), thus form contact rail circuit units (simultaneously with reference to figure 2 and Fig. 4); Every root walking rail connection lead is by the up walking rail residing for its place car depot power transformation and the series connection of descending walking rail, simultaneously, up walking rail and descending walking rail are also connected with DC de-icing device by change-over switch, thus form walking rail circuit units (simultaneously with reference to figure 3);
Each DC de-icing device switches connection to carry out interleaved power to contact rail circuit units and walking rail circuit units by change-over switch between contact rail circuit units and walking rail circuit units.
Wherein, with reference to Fig. 1, the equivalent resistance r of described upcoming contact rail and descending contact rail is much smaller than the equivalent resistance of train, and the equivalent resistance R of described up walking rail and descending walking rail is also much smaller than the equivalent resistance of train; The voltage that described DC de-icing device provides is much smaller than the voltage travelling power supply.Under normal circumstances, travelling power supply outputs to after train through contact rail, traveling power supply is returned again through walking rail, and the equivalent resistance of train is because of the equivalent resistance much larger than contact rail and walking rail, therefore the power supply travelling power supply can not be affected, here by up-downgoing contact rail, after up-downgoing walking rail short circuit, external DC de-icing device simultaneously, and the ice-melt direct current (DC) of DC de-icing device only acts on up-downgoing contact rail or up-downgoing walking rail, then only need at up-downgoing contact rail, up-downgoing walking rail loads the effect that less voltage just can play ice-melt, and because up-downgoing contact rail, the equivalent resistance of up-downgoing walking rail is much smaller than the equivalent resistance of train, therefore, the ice-melt voltage loaded thereon also can not have influence on and travel power supply to the power supply of train.
As can be seen from above-described embodiment, the deicing device of the tractive power supply system that the utility model provides and track, by arranging one group of ice-melt unit at place of each substation of car depot, the upcoming contact rail at this place and the series connection of descending contact rail are formed contact rail circuit units, thus contact rail can be utilized to substitute original DC ice-melting directly to power ice-melt, without the need to increasing DC ice-melting in addition, DC ice-melting is there will not be to rupture the ice-melt fault caused, and the direct current resistance of formed like this DC ice melting snow contact rail circuit units is identical, input Constant Direct Current electric current, it is identical that the icing snow of the heat that the joule effect of the contact rail circuit units of track (wire) is completely produced to track (wire) surface carries out heat thawing effect, meanwhile, also by up walking rail and the series connection of descending walking rail, form walking rail loop, thus walking rail can be utilized directly to power ice-melt, improve ice-melt efficiency, and, DC de-icing device switches connection by change-over switch between contact rail circuit units and walking rail circuit units, thus alternate energisation ice-melt is carried out to contact rail circuit units and walking rail circuit units, make can not to disturb by circuit for generating between contact rail loop and walking rail loop, in addition, by locating design one group of ice-melt unit in substation of each car depot, when one of them ice-melt unit is damaged, can't have influence on the ice-melt of other sections, caused loss of breaking down is less, designed by foregoing circuit, realization is come and gone two-orbit ice-melt simultaneously by the deicing device of the tractive power supply system that the utility model provides and track, and ice-melt speed is fast, and device good economy performance.
Wherein, described tractive power supply system mainly refers to up-downgoing contact rail, and the power supply voltage needed for train operation is provided by up-downgoing contact rail usually; Up-downgoing walking rail is then the walking track of train wheel.
Optionally, described deicing device also comprises: the circuit breaker of connecting with change-over switch being arranged on DC de-icing device side, be arranged on the first disconnector on contact rail connection lead, be arranged on the second disconnector on walking rail connection lead, thus realize functions such as DC de-icing device AC and DC side power supply, mode of connection switchings.
Described DC de-icing device comprises the source of AC, rectifier transformer, rectifier, the DC ice melting Control protection system that connect successively; Wherein rectifier is as the main convertor equipment of deicing device, for icing circuit provides DC ice melting current, described rectifier is made up of thyristor or IGBT device etc., adopts 6 pulsation or 12 pulsation or Three-phase PWM Voltage Rectifier, three plase alternating current is converted to direct current (DC); DC de-icing device power supply takes from source of AC, and this source of AC takes from the ac bus AC20kV mains side of the substation at the installation place of DC de-icing device; Rectification (step-down) voltage transformer, realizes power line voltage conversion and the isolation with AC network;
The alternating current of source of AC input ice-melt carries out voltage transformation to rectifier transformer and just exports ice-melt direct current (DC) after rectifier rectification, and described DC ice melting Control protection system carrys out adjusting circuit DC current by the Trigger Angle changing thyristor valve in deicing processes.
Preferably, the switching time that described DC de-icing device switches connection by grid-connected switch between contact rail circuit units and walking rail circuit units is 29s; Realize deicing device by control algorithm and switch current supply circuit in every 29 seconds, thus reach best ice-melt effect.
Further, described DC de-icing device is the ice-melt direct current (DC) that contact rail circuit units and walking rail circuit units are powered is low voltage (this voltage can design according to the equivalent resistance of contact rail, walking rail), act on after the traveling power supply of this ice-melt direct current (DC) superposition train on the equivalent resistance of contact rail circuit units or walking rail circuit units, but do not affect the train power supply that traveling power supply is operation; Like this, when not stopping transport, the alternately ice-melt of contact rail and traveling rail can being carried out, avoiding when continuing to snow, continue to form icing.
Those of ordinary skill in the field are to be understood that: the discussion of above any embodiment is only exemplary, and not intended to be implies that the scope of the present disclosure (comprising claim) is limited to these examples; Under thinking of the present utility model, can combine between the technical characteristic in above embodiment or different embodiment yet, and there are other changes many of different aspect of the present utility model as above, they do not provide in details for the sake of simplicity.Therefore, all within spirit of the present utility model and principle, any omission made, amendment, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. a deicing device for tractive power supply system and track, is characterized in that, comprises multiple DC de-icing device, many contact rail connection leads, many walking rail connection leads, multiple parallel switches;
DC de-icing device, contact rail connection lead, walking rail connection lead, a change-over switch consist of one group of ice-melt unit, and correspondence is arranged at residing for car depot's power transformation;
Every root contact rail connection lead is by the upcoming contact rail residing for its place car depot power transformation and the series connection of descending contact rail, and meanwhile, upcoming contact rail and descending contact rail are also connected with DC de-icing device by change-over switch, thus form contact rail circuit units; Every root walking rail connection lead is by the up walking rail residing for its place car depot power transformation and the series connection of descending walking rail, and meanwhile, up walking rail and descending walking rail are also connected with DC de-icing device by change-over switch, thus form walking rail circuit units;
Each DC de-icing device switches connection to carry out interleaved power to contact rail circuit units and walking rail circuit units by change-over switch between contact rail circuit units and walking rail circuit units.
2. deicing device according to claim 1, is characterized in that, the equivalent resistance of described upcoming contact rail and descending contact rail is much smaller than the equivalent resistance of train, and the equivalent resistance of described up walking rail and descending walking rail is also much smaller than the equivalent resistance of train; The voltage that described DC de-icing device provides is much smaller than the voltage travelling power supply.
3. deicing device according to claim 1, it is characterized in that, also comprise: the circuit breaker of connecting with change-over switch being arranged on DC de-icing device side, be arranged on the first disconnector on contact rail connection lead, be arranged on the second disconnector on walking rail connection lead.
4. deicing device according to claim 1, is characterized in that, described DC de-icing device comprises the source of AC, rectifier transformer, rectifier, the DC ice melting Control protection system that connect successively;
The alternating current of source of AC input ice-melt carries out voltage transformation to rectifier transformer and just exports ice-melt direct current (DC) after rectifier rectification, and described DC ice melting Control protection system carrys out adjusting circuit DC current by the Trigger Angle changing thyristor valve in deicing processes.
5. deicing device according to claim 4, is characterized in that, described rectifier is made up of thyristor or IGBT device etc., adopts 6 pulsation or 12 pulsation or Three-phase PWM Voltage Rectifier, three plase alternating current is converted to direct current (DC).
6. deicing device according to claim 4, is characterized in that, DC de-icing device power supply takes from source of AC, and this source of AC takes from the ac bus AC20kV mains side of the substation at the installation place of DC de-icing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520504933.4U CN204774710U (en) | 2015-07-13 | 2015-07-13 | Pull power supply system and orbital ice -melt device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520504933.4U CN204774710U (en) | 2015-07-13 | 2015-07-13 | Pull power supply system and orbital ice -melt device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204774710U true CN204774710U (en) | 2015-11-18 |
Family
ID=54514822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520504933.4U Active CN204774710U (en) | 2015-07-13 | 2015-07-13 | Pull power supply system and orbital ice -melt device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204774710U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105034854A (en) * | 2015-07-13 | 2015-11-11 | 中电博瑞技术（北京）有限公司 | Tractive power supply system and track ice melting device |
-
2015
- 2015-07-13 CN CN201520504933.4U patent/CN204774710U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105034854A (en) * | 2015-07-13 | 2015-11-11 | 中电博瑞技术（北京）有限公司 | Tractive power supply system and track ice melting device |
| CN105034854B (en) * | 2015-07-13 | 2017-06-13 | 中电博瑞技术（北京）有限公司 | Deicing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105034854B (en) | Deicing device | |
| CN105730248B (en) | A kind of locomotive regenerative electric energy feedback system and control method for having ice-melt function concurrently | |
| CN102638019B (en) | Direct-current catenary de-icing method of high-speed electrified railway | |
| CN103950394B (en) | Alternating current and direct current mixed traction power supply system with ice melting function | |
| CN102195260B (en) | Power-frequency online anti-icing de-icing method for electrified railway contact network | |
| CN102290767A (en) | Method for de-icing a railway vehicle feeder cable | |
| CN105128704B (en) | A kind of intelligent automatic neutral-section passing system | |
| CN102832582B (en) | Online anti-icing and de-icing control system of alternating current electrified railway catenary | |
| CN109204006A (en) | One kind being applied to attached wires of AC electrified railway Regenerated energy and utilizes system | |
| RU2427484C1 (en) | Electric power supply system of electrified ac railways | |
| CN112260199A (en) | Online ice melting system and method for rail transit alternating current | |
| CN201980097U (en) | Power regulation and de-icing device for railway traction net | |
| CN204774710U (en) | Pull power supply system and orbital ice -melt device | |
| CN104410061B (en) | Traction power supply promotes system with cascade dual star topology direct current supply and electric power quality | |
| CN102310785A (en) | Electric railway damping automatic passing neutral section system | |
| CN109050352A (en) | Through homo-phase traction power supply system, traction substation and its method for controlling power supply | |
| CN103247991B (en) | A kind of contact nets in electrified railways utilize phase fault to realize anti-icing de-icing method | |
| CN102963272B (en) | Through cophase power supply system for alternating-current electrified railway | |
| CN102638020B (en) | Direct-current electrical railway catenary de-icing equipment of high-speed electrified railway and direct-current catenary de-icing system | |
| CN202152017U (en) | Automatic damping phase break conversion device of electrified railway | |
| CN107215245B (en) | Energy self-circulation contact net ice melting system | |
| CN103414242B (en) | A kind of electrified railway in-phase power supply method and standby host structure | |
| CN205686215U (en) | A kind of non-shut-brake neutral-section passing system of EMUs | |
| CN212046997U (en) | Return circuit device for limiting power cross-area transmission of urban rail transit power supply system | |
| WO2021098650A1 (en) | Traction power supply system structure applying single-phase traction transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |