CN105034854B - Deicing device - Google Patents
Deicing device Download PDFInfo
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- CN105034854B CN105034854B CN201510409174.8A CN201510409174A CN105034854B CN 105034854 B CN105034854 B CN 105034854B CN 201510409174 A CN201510409174 A CN 201510409174A CN 105034854 B CN105034854 B CN 105034854B
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Abstract
The invention discloses a kind of deicing device, for tractive power supply system and track, including multiple DC ice melting mechanisms, many conductor rail connecting lines, many walking rail connecting lines, multiple switching switches；One DC ice melting mechanism, conductor rail connecting line, walking rail connecting line, a switching switches set turn into one group of ice-melt unit, are correspondingly arranged in residing for rolling stock section's power transformation；Upcoming contact rail and descending conductor rail series connection residing for rolling stock section's power transformation where it, upcoming contact rail and descending conductor rail are formed conductor rail circuit units by every conductor rail connecting line also by switching switch and DC ice melting mechanisms in series；Similarly form walking rail circuit units；Each DC ice melting mechanism switches connection to carry out interleaved power by switching switch between conductor rail circuit units and walking rail circuit units；It is proposed by the present invention for tractive power supply system and the deicing device of track, do not influence train normally to run, it is adaptable to the icing treatment of operating train.
Description
Technical field
The present invention relates to technical field of rail traffic, a kind of deicing device is particularly related to.
Background technology
In recent years, the track transportation industry high speed development such as Chinese high ferro, light rail, it has also become must in people's daily life
Few vehicles.Tractive power supply system and track occur icing phenomenon under the conditions of rugged environment temperature and humidity etc.,
Trailer system icing will cause the pantograph cannot normally to take stream, and the infringement of pantograph or fracture major accident will be caused when serious.
The icing for how preventing or melting tractive power supply system and track is the problem that electric railway must be faced and solved.
Currently, DC ice melting is the technology of mature and feasible generally acknowledged at present.The technology is generally made using silicon controlled rectifier
It is the convertor equipment of core, is aided with the parts such as smoothing reactor, alternating current filter, but after needing transmission line of electricity to exit operation, is
Icing circuit provides DC ice melting current, the Joule heat ice-melt formed using the equivalent resistance of transmission line of electricity.The program must be
Icing phenomenon disconnects power supply after being formed, and changes system connection scheme formation ice melting current path, it is impossible to supplied traction is not being influenceed
Anti-icing and ice-melt is realized on the premise of electric system normal power supply, therefore, the program is if applied to the power supply system of electric railway
System, will influence the normal operation of train；Also, independent transmission line of electricity is used, because it holds in the case of extremely low temperature
Easily it is broken, similarly influences whether ice-melt effect, while DC ice-melting is typically whole piece circuit is filled using same ice-melt
Put, online path loss bad when, can cause whole piece circuit cannot ice-melt, so as to cause larger loss；Additionally, common deicing device
Ice-melt is only carried out to conductor rail, and ice-melt is not carried out generally to walking rail, can so reduce the ice-melt efficiency of whole track.
The content of the invention
In view of this, it is an object of the invention to propose a kind of deicing device, for tractive power supply system and track, to keep away
Exempt from tractive power supply system and track because icing leads to not normally take stream, influence the safety of train and run on schedule；The ice-melt is filled
Putting will carry out ice-melt operation in the case where not influenceing track normally to run, and can especially avoid, when persistently snowing, continuing
Form icing；The icing treatment of light rail, high-speed electric railway of the device suitable for running status.
Based on the deicing device that the above-mentioned purpose present invention is provided, for tractive power supply system and track, including multiple direct currents
Ice-melt mechanism, many conductor rail connecting lines, many walking rail connecting lines, multiple switching switches；
One DC ice melting mechanism, conductor rail connecting line, walking rail connecting line, a switching switches set turn into
One group of ice-melt unit, is correspondingly arranged in residing for rolling stock section's power transformation；
Every conductor rail connecting line connects the upcoming contact rail and descending conductor rail residing for rolling stock section's power transformation where it, together
When, upcoming contact rail and descending conductor rail are also switched and DC ice melting mechanisms in series by switching, so as to form conductor rail loop
Unit；Every walking rail connecting line connects the up walking rail and descending walking rail residing for rolling stock section's power transformation where it, meanwhile,
Up walking rail and descending walking rail are also by switching switch and DC ice melting mechanisms in series, so as to form walking rail loop list
Unit；
Each DC ice melting mechanism is switched by switching switch between conductor rail circuit units and walking rail circuit units
Connection carries out interleaved power with to conductor rail circuit units and walking rail circuit units.
In some embodiments, the equivalent resistance of the upcoming contact rail and descending conductor rail is equivalent much smaller than train
Equivalent resistance of the equivalent resistance of resistance, the up walking rail and descending walking rail also much smaller than train；The DC ice melting
Voltage of the voltage that mechanism provides much smaller than traveling power supply.
In some embodiments, the deicing device also includes：It is arranged on being switched with switching for DC ice melting mechanism side
The breaker of series connection, is arranged on the first disconnecting switch on conductor rail connecting line, be arranged on walking rail connecting line on second every
Leave pass.
In some embodiments, it is the DC ice melting mechanism includes being sequentially connected AC power, rectifier transformer, whole
Stream device, DC ice melting Control protection system；
The alternating current of AC power input ice-melt carries out voltage transformation and with regard to being exported after rectifier rectification to rectifier transformer
Ice-melt direct current, the DC ice melting Control protection system is adjusted in deicing processes by changing the Trigger Angle of thyristor valve
Circuit DC current.
In some embodiments, the rectifier is made up of IGCT or IGBT device etc., using 6 pulsation or 12 pulsation
Or Three-phase PWM Voltage Rectifier, three-phase alternating current is converted into direct current.
In some embodiments, DC ice melting mechanism power takes from AC power, and the AC power takes from DC ice melting
The ac bus AC20kV mains sides of the electric substation where the installation of mechanism.
In some embodiments, the DC ice melting mechanism is by switching switch in conductor rail circuit units and walking rail
The switching time for switching connection between circuit units is 29s.
In some embodiments, the DC ice melting mechanism is that conductor rail circuit units and walking rail circuit units are powered
Ice-melt direct current be low-voltage, the ice-melt direct current superposition train traveling power supply voltage after act on conductor rail loop list
On the equivalent resistance of unit or walking rail circuit units, but do not influence to travel the train power supply that power supply is operation.
From the above it can be seen that the deicing device that the present invention is provided, for tractive power supply system and track, by
One group of ice-melt unit is set at each transformer station of rolling stock section, the upcoming contact rail and descending conductor rail at this are connected to form contact
Rail circuit units such that it is able to substitute original DC ice-melting using conductor rail and directly powered ice-melt, without increase in addition
DC ice-melting, is not in that DC ice-melting is broken the ice-melt failure for causing, and so form DC ice melting snow conductor rail time
The D.C. resistance of road unit is identical, is input into Constant Direct Current electric current so that Jiao of the conductor rail circuit units of all fronts track (wire)
It is identical that the heat that ear effect is produced carries out heat thawing effect to the icing snow on track (wire) surface；Meanwhile, also by up walking
Rail and descending walking rail are connected, and form walking rail loop such that it is able to directly powered ice-melt using rail of walking, improve ice-melt
Efficiency；Also, DC ice melting mechanism is connected by switching switch switching between conductor rail circuit units and walking rail circuit units
Connect, so as to carry out alternate energisation ice-melt to conductor rail circuit units and walking rail circuit units so that conductor rail loop and walking
Circuit interference will not occur between rail loop；Additionally, by designing one group of ice-melt unit at each transformer station of rolling stock section so that
When one of ice-melt unit is damaged, the ice-melt of other sections is not interfered with, caused loss of breaking down is smaller；Pass through
Foregoing circuit is designed, and the deicing device that the present invention is provided will be realized coming and going two-orbit ice-melt simultaneously, and ice-melt speed is fast, and device is passed through
Ji property is good.
Brief description of the drawings
The principle schematic equivalent circuit of the deicing device embodiment that Fig. 1 is provided for the present invention；
The circuit connection in the conductor rail loop of up-downgoing conductor rail is shown in the deicing device embodiment that Fig. 2 is provided for the present invention
It is intended to；
The principle equivalent electric in the walking rail loop of up-downgoing walking rail in the deicing device embodiment that Fig. 3 is provided for the present invention
Road schematic diagram；
The principle equivalent electric in the conductor rail loop of up-downgoing conductor rail in the deicing device embodiment that Fig. 4 is provided for the present invention
Road schematic diagram.
Specific embodiment
To make the object, technical solutions and advantages of the present invention become more apparent, below in conjunction with specific embodiment, and reference
Accompanying drawing, the present invention is described in more detail.
It should be noted that the statement of all uses " first " and " second " is for differentiation two in the embodiment of the present invention
The entity of individual same names non-equal or the parameter of non-equal, it is seen that " first " " second " should not only for the convenience of statement
The restriction to the embodiment of the present invention is interpreted as, subsequent embodiment is no longer illustrated one by one to this.
The cardinal principle of DC ice melting is, using icing circuit as load, to apply dc source, provides straight with low voltage
Flow short-circuit electric current carrys out heating wires melts line ice coating.It is the original of the deicing device embodiment that the present invention is provided referring to the drawings 1
Reason schematic equivalent circuit.
The deicing device, connects for tractive power supply system and track, including multiple DC ice melting mechanisms, many conductor rails
Wiring, many walking rail connecting lines, multiple switching switches；
One DC ice melting mechanism, conductor rail connecting line, walking rail connecting line, a grid-connected switches set turn into
One group of ice-melt unit, is correspondingly arranged in residing for rolling stock section's power transformation；That is, it is provided with one group residing for each rolling stock section's power transformation
Ice-melt unit；
Every conductor rail connecting line connects the upcoming contact rail and descending conductor rail residing for rolling stock section's power transformation where it, together
When, (first switch K1 and second switch K2 is for switching is switched in Fig. 1 also by switching switch for upcoming contact rail and descending conductor rail
Equivalent switch) with DC ice melting mechanisms in series, so as to form conductor rail circuit units (with reference to Fig. 2 and Fig. 4)；Every row
Rail connecting line is walked by up walking rail and descending walking the rail series connection residing for rolling stock section's power transformation where it, meanwhile, up walking rail
With descending walking rail also by switching switch and DC ice melting mechanisms in series, thus formed walking rail circuit units (with reference to
Fig. 3)；
Each DC ice melting mechanism is switched by switching switch between conductor rail circuit units and walking rail circuit units
Connection carries out interleaved power with to conductor rail circuit units and walking rail circuit units.
Wherein, equivalent electrics of the equivalent resistance r of reference picture 1, the upcoming contact rail and descending conductor rail much smaller than train
Equivalent resistances of the equivalent resistance R of resistance, the up walking rail and descending walking rail also much smaller than train；The DC ice melting machine
Voltage of the voltage that structure is provided much smaller than traveling power supply.Under normal circumstances, traveling power supply is exported to after train through conductor rail, then is passed through
Walking rail returns to traveling power supply, and the equivalent resistance of train because of the equivalent resistance much larger than conductor rail and walking rail, therefore not
Can influence travel power supply power supply, here by up-downgoing conductor rail, up-downgoing walking rail short circuit after, while external DC ice melting machine
Structure, and the ice-melt direct current of DC ice melting mechanism is only acted upon on up-downgoing conductor rail or up-downgoing walking rail, then only need to be upper
Less voltage is loaded on descending conductor rail, up-downgoing walking rail can play a part of ice-melt, and because up-downgoing contact
The equivalent resistance of the equivalent resistance much smaller than train of rail, up-downgoing walking rail, therefore, loading ice-melt voltage thereon also will not
Have influence on power supply of the traveling power supply to train.
From above-described embodiment as can be seen that the deicing device of present invention offer, sets by each transformer station of rolling stock section
One group of ice-melt unit is put, the upcoming contact rail and descending conductor rail at this is connected to form conductor rail circuit units such that it is able to
Original DC ice-melting is substituted using conductor rail directly to be powered ice-melt, be not in melt without increasing DC ice-melting in addition
The ice-melt failure that ice rupture of line is caused, and so form the D.C. resistance phase that DC ice melting avenges conductor rail circuit units
Together, it is input into Constant Direct Current electric current so that the heat pair that the Joule effect of the conductor rail circuit units of all fronts track (wire) is produced
It is identical that the icing snow on 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 such that it is able to directly powered ice-melt using rail of walking, improve ice-melt efficiency；Also, DC ice melting
Mechanism switches connection by switching switch between conductor rail circuit units and walking rail circuit units, so as to conductor rail loop
Unit and walking rail circuit units carry out alternate energisation ice-melt so that electricity will not occur between conductor rail loop and walking rail loop
Disturb on road；Additionally, by designing one group of ice-melt unit at each transformer station of rolling stock section so that one of ice-melt unit is damaged
When, the ice-melt of other sections is not interfered with, caused loss of breaking down is smaller；Designed by foregoing circuit, the present invention
The deicing device of offer will be realized coming and going two-orbit ice-melt simultaneously, and ice-melt speed is fast, and device good economy performance.
Wherein, described tractive power supply system is primarily referred to as up-downgoing conductor rail, and the supply voltage needed for train operation leads to
Often provided by up-downgoing conductor rail；Up-downgoing walking rail is then the walking track of train wheel.
Optionally, the deicing device also includes：It is arranged on the open circuit connected with switching switch of DC ice melting mechanism side
Device, is arranged on the first disconnecting switch on conductor rail connecting line, is arranged on the second disconnecting switch on walking rail connecting line, so that
Realize to functions such as DC ice melting mechanism AC and DC side power supply, mode of connection switchings.
The DC ice melting mechanism includes the AC power, rectifier transformer, rectifier, the DC ice melting control that are sequentially connected
Protection system；Wherein rectifier as deicing device main convertor equipment, it is described for icing circuit provides DC ice melting current
Rectifier is made up of IGCT or IGBT device etc., using 6 pulsation or 12 pulsation or Three-phase PWM Voltage Rectifier, by three-phase
Alternating current is converted to direct current；DC ice melting mechanism power takes from AC power, and the AC power takes from DC ice melting mechanism
The ac bus AC20kV mains sides of the electric substation where installation；Rectification (step-down) transformer, realize supply voltage conversion and
With isolating for AC network；
The alternating current of AC power input ice-melt carries out voltage transformation and with regard to being exported after rectifier rectification to rectifier transformer
Ice-melt direct current, the DC ice melting Control protection system is adjusted in deicing processes by changing the Trigger Angle of thyristor valve
Circuit DC current.
Preferably, the DC ice melting mechanism by grid-connected switch conductor rail circuit units and walking rail circuit units it
Between switch connection switching time be 29s；Every 29 seconds switching current supply circuits of deicing device are realized by control algolithm, so as to reach
Best ice-melt effect.
Further, the DC ice melting mechanism is that the ice-melt that conductor rail circuit units and walking rail circuit units are powered is straight
Stream electricity is low-voltage (voltage can be designed according to the equivalent resistance of conductor rail, walking rail), ice-melt direct current superposition row
Acted on after the traveling power supply of car on the equivalent resistance of conductor rail circuit units or walking rail circuit units, but do not influence traveling electricity
Source is the train power supply of operation；So, the alternating ice-melt of conductor rail and traveling rail in the case where not stopping transport, can be carried out, is kept away
Exempt from, when persistently snowing, to continuously form icing.
Those of ordinary skill in the art should be understood：The discussion of any of the above embodiment is exemplary only, not
It is intended to imply that the scope of the present disclosure (including claim) is limited to these examples；Under thinking of the invention, above example
Or can also be combined between the technical characteristic in different embodiments, and there is different aspect of the invention as described above
Many other changes, in order to it is concise they provided not in details.Therefore, it is all within the spirit and principles in the present invention,
Any omission, modification, equivalent, improvement for being made etc., should be included within the scope of the present invention.
Claims (6)
1. a kind of deicing device, for tractive power supply system and track, it is characterised in that including multiple DC ice melting mechanisms, many
Root conductor rail connecting line, many walking rail connecting lines, multiple switching switches；
One DC ice melting mechanism, conductor rail connecting line, walking rail connecting line, a switching switches set turn into one group
Ice-melt unit, is correspondingly arranged in residing for rolling stock section's power transformation；
Every conductor rail connecting line connects the upcoming contact rail and descending conductor rail residing for rolling stock section's power transformation where it, meanwhile,
Upcoming contact rail and descending conductor rail are also switched and DC ice melting mechanisms in series by switching, so as to form conductor rail loop list
Unit；Every walking rail connecting line connects the up walking rail and descending walking rail residing for rolling stock section's power transformation where it, meanwhile, on
Every trade walks rail and descending walking rail also by switching switch and DC ice melting mechanisms in series, so as to form walking rail circuit units；
Each DC ice melting mechanism switches connection by switching switch between conductor rail circuit units and walking rail circuit units
Interleaved power is carried out with to conductor rail circuit units and walking rail circuit units；
Described deicing device, also includes：The breaker connected with switching switch of DC ice melting mechanism side is arranged on, is arranged on
The first disconnecting switch on conductor rail connecting line, is arranged on the second disconnecting switch on walking rail connecting line；
The DC ice melting mechanism includes the AC power, rectifier transformer, rectifier, the DC ice melting control protection that are sequentially connected
System；
The alternating current of AC power input ice-melt carries out voltage transformation and with regard to exporting ice-melt after rectifier rectification to rectifier transformer
Direct current, the DC ice melting Control protection system is in deicing processes by changing the Trigger Angle of thyristor valve come adjusting circuit
DC current.
2. deicing device according to claim 1, it is characterised in that the upcoming contact rail and descending conductor rail it is equivalent
Resistance is less than the equivalent electric of the equivalent resistance again smaller than train of the equivalent resistance of train, the up walking rail and descending walking rail
Resistance；Voltage of the voltage that the DC ice melting mechanism provides less than traveling power supply.
3. deicing device according to claim 1, it is characterised in that the rectifier is by IGCT or IGBT device group
Into, pulsed or Three-phase PWM Voltage Rectifier using 6 pulsation or 12, three-phase alternating current is converted into direct current.
4. deicing device according to claim 1, it is characterised in that DC ice melting mechanism power takes from AC power, should
AC power take from the installation of DC ice melting mechanism where electric substation ac bus AC20kV mains sides.
5. the deicing device according to claim 1-4 any one, it is characterised in that the DC ice melting mechanism is by cutting
Change switch conductor rail circuit units and walking rail circuit units between switch connection switching time be 29s.
6. the deicing device according to claim 1-4 any one, it is characterised in that the DC ice melting mechanism is contact
The ice-melt direct current that rail circuit units and walking rail circuit units are powered is low-voltage, and the ice-melt direct current is superimposed the traveling of train
Acted on after the voltage of power supply on the equivalent resistance of conductor rail circuit units or walking rail circuit units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510409174.8A CN105034854B (en) | 2015-07-13 | 2015-07-13 | Deicing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510409174.8A CN105034854B (en) | 2015-07-13 | 2015-07-13 | Deicing device |
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| CN105034854A CN105034854A (en) | 2015-11-11 |
| CN105034854B true CN105034854B (en) | 2017-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510409174.8A Active CN105034854B (en) | 2015-07-13 | 2015-07-13 | Deicing device |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105730248B (en) | 2016-03-03 | 2017-10-13 | 南京南瑞继保电气有限公司 | A kind of locomotive regenerative electric energy feedback system and control method for having ice-melt function concurrently |
| CN109204072A (en) * | 2018-11-13 | 2019-01-15 | 中车株洲电力机车有限公司 | A kind of rail vehicle electrical power contact rail heater circuit |
| CN109204071A (en) * | 2018-11-13 | 2019-01-15 | 中车株洲电力机车有限公司 | A kind of rail vehicle electrical power contact rail heater circuit |
| CN110205972B (en) * | 2019-06-05 | 2021-03-16 | 中铁电气化局集团有限公司 | Rail transit deicing snow melt system |
| CN111697598B (en) * | 2020-05-19 | 2021-12-17 | 国网湖南省电力有限公司 | Mode switching system and mode switching method for electrified railway |
| CN113370849B (en) * | 2021-07-30 | 2022-12-02 | 清华大学 | Traction power supply system with ice melting and energy feedback functions |
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| CN105034854A (en) | 2015-11-11 |
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