CN102310785A - Electric railway damping automatic passing neutral section system - Google Patents
Electric railway damping automatic passing neutral section system Download PDFInfo
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- CN102310785A CN102310785A CN201110142909A CN201110142909A CN102310785A CN 102310785 A CN102310785 A CN 102310785A CN 201110142909 A CN201110142909 A CN 201110142909A CN 201110142909 A CN201110142909 A CN 201110142909A CN 102310785 A CN102310785 A CN 102310785A
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Abstract
The invention discloses an electric railway damping automatic passing neutral section system. The system is characterized in that a high-voltage high-capacity resistor (R) is connected in series between power supply arms (U, D) of a traction substation and a contact network neutral section (M1) at the outlet of the traction substation; a high-voltage high-capacity resistor (R) is also connected in series between the power supply arms (U, D) of the traction substation and a contact network neutral section (M2) between two traction substations; and a split-phase insulated element (G) is connected in series between the contact network neutral section (M1) at the outlet of the traction substation and the contact network neutral section (M2) between the two traction substations. The system can be used for avoiding transient over-voltage phenomenon in a locomotive running process, and realizing safe and reliable automatic passing neutral section of an electric locomotive. The system has the advantages of simple structure, low cost and suitability for long-term operation.
Description
Technical field
The present invention relates to the automatically undue phase system of a kind of electric railway.
Background technology
That monophase system had was simple in structure, construction cost is low, utilization and advantage such as easy to maintenance, had determined that generally adopting the single phase industrial frequence alternating current in electrified railway is the railway locomotive power supply.And electric system hopes all loads and all takes three symmetrical electric currents from electrical network, promptly guarantees the symmetry of three-phase load.For satisfying this requirement, electric railway adopts the scheme that phase sequence is rotated, the segmentation phase-splitting is supplied power, and every along the railway 20-25km is as a power supply section, and each section is successively respectively by the not cophase supply in the electrical network.The mode of this sectional power supply, commutation has in turn formed a unique texture---the electric phase-splitting of electric railway traction power supply system.Owing to take the sectional power supply mode to railway power supply, every section phase place is also different, need insulate between section and the section through suitable mode, this section and section between insulation system promptly be called electric phase-splitting.Train carries out the transition to the process of another section for power supply from a section for power supply in operational process, be called train and cross phase-splitting.
The basic skills that train is crossed phase-splitting is: neutral section (being generally about 200m) is set between adjacent two feeding sections; Break off between the end of neutral section and the end of two feeding sections; When train when a feeding section sails neutral section into; The traction net stops to train power supply, after it rolls neutral section away from by another feeding section to train power supply.The moment of sailing the outage of neutral section train at train into can produce the transient state high pressure, and this high pressure can produce electro spark with air breakdown, rolls neutral section away from if electro spark continues to, and then causes the adjacent feeding section accident that is short-circuited, and electric power system and locomotive is produced destroy.For fear of the generation of this kind situation, can prolong the length of neutral section, but reduce the running velocity and the efficient of train; Perhaps, carry out falling bow and rising the bow operation of pantograph in neutral section by driver operation, its complicated operation, and in the train high-speed cruising, it is improper that operation has slightly, promptly can the generation accident.Though vehicle-mounted automatic phase-splitting and the ground automatic neutral-section passing device crossed also arranged; But these devices all need high-voltage switch gear and automatic control device, and cost is high, poor reliability; And frequent switching still can produce the transient overvoltage phenomenon, influences the safety and stablization of traction system and locomotive.
Summary of the invention
The object of the invention just provides the automatically undue phase system of a kind of electrified railway damping, and this system has avoided the transient overvoltage phenomenon in the locomotive operation process, realizes the automatic safely and reliably phase-splitting excessively of electric locomotive.This system architecture is simple, and cost is low, is suitable for long-time running.
The present invention solves its technical matters, and the technical scheme that is adopted does, the automatically undue phase system of a kind of electrified railway damping, and its composition is: be in series with high-voltage large-capacity resistance between neutral section of the contact system in the feeding section of traction substation and traction substation exit; The high-voltage large-capacity resistance of also connecting between the neutral section of contact system between the feeding section of traction substation and two traction substations; The centre of the neutral section of contact system between neutral section and two traction substations of the contact system in traction substation exit all also is serially connected with the phase-splitting insulation element.
Principle of work of the present invention is:
The phase-splitting insulation element of serial connection is divided into the both sides that mutual electricity is isolated with neutral section in the middle of the neutral section; Again owing to be serially connected with high capacity resistance between neutral section and the feeding section; Under the shock damping action of resistance, the both sides of neutral section have obtained the voltage of lower (being lower than power supply voltage 27.5kV) respectively through the feeding section of respective sides.When train when a feeding section sails neutral section one side into, obtain to be lower than the neutral section of this side voltage of power supply voltage on the train; When the phase-splitting insulation element place that is connected in series in the middle of the neutral section of contact system was arrived in train operation, train voltage reduced to zero by this side neutrality section voltage; After crossing insulation component, train voltage is upgraded to the neutral section of opposite side voltage by zero again; When rolling neutral section away from, train voltage is raised to opposite side feeding section voltage by the neutral section of opposite side voltage, and train was accomplished phase-splitting, carried out supply regular power by the opposite side feeding section.
Compared with prior art, the invention has the beneficial effects as follows:
One, passes through the resistance of neutral section two ends serial connection and the effect of the middle phase-splitting insulation element that is connected in series; Made in the phase process; The train voltage change process becomes a side feeding section voltage by the pattern of the feeding section voltage of original---zero---opposite side of a side feeding section voltage---the neutral section of the homonymy of low voltage voltage---zero---neutral section voltage of opposite side---feeding section voltage of opposite side; Introduced middle transition transformation process; The transient voltage rangeability is little; Slackened the transient overvoltage phenomenon that direct phase-splitting excessively produces, electro spark can not occur, avoided two phase feeding sections short circuited possibility possibly occur at the mistake phase process; Reduced adverse effect, improved power supply reliability and safety tractive power supply system.
Two, because the centre of neutral section has been connected in series the phase-splitting insulation element,, there is not electric current to flow through on the high capacity resistance, so consumed power not at train phase time within reason; Only in it's the blink (about 20S) that phase-splitting operates in neutral section is past train, have electric current to pass through on the high capacity resistance, therefore, the consumption of power of the high capacity resistance increase that seals in is few, is suitable for long-time running.
Three, system of the present invention does not need driver and ground staff to carry out any operation at undue phase time, has realized the automatic phase-splitting of crossing.Compare with vehicle-mounted automatic neutral-section passing device with existing ground automatic neutral-section passing device simultaneously; System of the present invention need not be provided with any binistor; Also avoided over voltage that the high-voltage switch change action frequently causes to influence, improved the reliability and the safety of train operation traction system and locomotive electric cad system equipment.
Four, the element of system of the present invention increase is merely high capacity resistance and insulation component, and it is simple in structure, and cost is low, small investment, and working service is convenient.
The rated voltage of above-mentioned high-voltage large-capacity resistance is 27.5kV, and capacity is 2～4MW.
Like this, in it's the blink (about 20S) that phase-splitting operates in neutral section is past train, when having electric current to pass through on this high capacity resistance, can bear correspondent voltage and electric current, have reliability and stability preferably.
Above-mentioned high-voltage large-capacity resistance is noninductive resistance.Reduce the transient overvoltage phenomenon of the undue phase time of train so on the one hand, also helped the power supply performance of tractive power supply system on the other hand.
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further description.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
The specific embodiment
Embodiment
Fig. 1 illustrates, and a kind of specific embodiment of the present invention is:
The automatically undue phase system of a kind of electrified railway damping, its composition is: be in series with the high-voltage large-capacity resistance R between the neutral section of the contact system in the feeding section U of traction substation, D and the traction substation exit M1; The high-voltage large-capacity resistance R of also connecting between the neutral section of the contact system M2 between the feeding section U of traction substation, D and two traction substations; The centre of the neutral section of contact system M2 between the contact system in traction substation exit neutral section M1 and two traction substations all also is serially connected with phase-splitting insulation element G.
The rated voltage of the high-voltage large-capacity resistance R that this is routine is 27.5kV, and capacity is 2～4MW.This resistance R is a noninductive resistance.
Fig. 1 illustrates; Working process of the present invention and principle are: the phase-splitting insulation element G of serial connection is divided into the both sides that mutual electricity is isolated with neutral section M1, M2 in the middle of neutral section M1, the M2; Again owing to being serially connected with the high capacity resistance R between neutral section M1, M2 and feeding section U, the D; Under the shock damping action of resistance R, the both sides of neutral section M1, M2 have obtained to be lower than the voltage of power supply voltage 27.5kV respectively through feeding section U, the D of respective sides.When train L when a feeding section U sails neutral section M1 or neutral section M2 one side into, train L goes up and obtains to be lower than this side neutral section M1 of power supply voltage or the voltage of M2; When train L ran to the phase-splitting insulation element G place that is connected in series in the middle of contact system neutral section M1 or the M2, the voltage of train L reduced to zero by the voltage of this side neutral section M1 or M2; After crossing insulation component G, train L voltage is again by the zero voltage that is upgraded to opposite side neutral section M1 or M2; When rolling neutral section M1 or M2 away from, train L voltage is raised to the voltage of opposite side feeding section D by the voltage of opposite side neutral section M1 or M2, and train L accomplished phase-splitting, and D carries out supply regular power by the opposite side feeding section.
Claims (3)
1. the automatically undue phase system of electrified railway damping is characterized in that: be in series with high-voltage large-capacity resistance (R) between the neutral section of the contact system in feeding section of traction substation (U, D) and traction substation exit (M1); The high-voltage large-capacity resistance (R) of also connecting between the neutral section of contact system between the feeding section of traction substation (U, D) and two traction substations (M2); The centre of the neutral section of contact system (M2) between the neutral section of the contact system in traction substation exit (M1) and two traction substations all also is serially connected with phase-splitting insulation element (G).
2. the automatically undue phase system of a kind of electrified railway damping according to claim 1, it is characterized in that: the rated voltage of described high-voltage large-capacity resistance (R) is 27.5kV, capacity is 2～4MW.
3. the automatically undue phase system of a kind of electrified railway damping according to claim 1, it is characterized in that: described high-voltage large-capacity resistance (R) is noninductive resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110142909A CN102310785A (en) | 2011-05-30 | 2011-05-30 | Electric railway damping automatic passing neutral section system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110142909A CN102310785A (en) | 2011-05-30 | 2011-05-30 | Electric railway damping automatic passing neutral section system |
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| CN102310785A true CN102310785A (en) | 2012-01-11 |
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| CN201110142909A Pending CN102310785A (en) | 2011-05-30 | 2011-05-30 | Electric railway damping automatic passing neutral section system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102765333A (en) * | 2012-08-06 | 2012-11-07 | 李子晗 | Damping type automatic -passing phase separation switching device for electrified railways |
| CN105015366A (en) * | 2015-07-16 | 2015-11-04 | 西南交通大学 | Phase switching method for rapidly adjusting phase of reference voltage of inverter |
| CN107635824A (en) * | 2015-03-19 | 2018-01-26 | 西门子公司 | Sliding line apparatus |
| CN108909541A (en) * | 2018-08-24 | 2018-11-30 | 西南交通大学 | A kind of electric railway AT institute powered construction |
| CN108995563A (en) * | 2018-08-24 | 2018-12-14 | 西南交通大学 | A kind of electric railway switching station powered construction |
| CN114407734A (en) * | 2021-12-21 | 2022-04-29 | 西南交通大学 | Flexible traction power supply system and protection method |
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| CN101559728A (en) * | 2009-05-27 | 2009-10-21 | 株洲南车时代电气股份有限公司 | Automatic control mode of railway passing neutral section and device thereof |
| CN101746283A (en) * | 2010-03-15 | 2010-06-23 | 西南交通大学 | Electrified railroad homo-phase traction power supply system |
| CN101767540A (en) * | 2010-03-12 | 2010-07-07 | 李子晗 | Switch-free switching auto-passing neutral section device for the electric railway |
| CN101774356A (en) * | 2009-01-14 | 2010-07-14 | 李文 | Method for realizing locomotive passing neutral section through progressive phase shift and device thereof |
| CN202152017U (en) * | 2011-05-30 | 2012-02-29 | 李子晗 | Automatic damping phase break conversion device of electrified railway |
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2011
- 2011-05-30 CN CN201110142909A patent/CN102310785A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101774356A (en) * | 2009-01-14 | 2010-07-14 | 李文 | Method for realizing locomotive passing neutral section through progressive phase shift and device thereof |
| CN101559728A (en) * | 2009-05-27 | 2009-10-21 | 株洲南车时代电气股份有限公司 | Automatic control mode of railway passing neutral section and device thereof |
| CN101767540A (en) * | 2010-03-12 | 2010-07-07 | 李子晗 | Switch-free switching auto-passing neutral section device for the electric railway |
| CN101746283A (en) * | 2010-03-15 | 2010-06-23 | 西南交通大学 | Electrified railroad homo-phase traction power supply system |
| CN202152017U (en) * | 2011-05-30 | 2012-02-29 | 李子晗 | Automatic damping phase break conversion device of electrified railway |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102765333A (en) * | 2012-08-06 | 2012-11-07 | 李子晗 | Damping type automatic -passing phase separation switching device for electrified railways |
| CN102765333B (en) * | 2012-08-06 | 2015-12-09 | 李子晗 | A kind of electric railway damping type automatic switchover passing phase insulator device |
| CN107635824A (en) * | 2015-03-19 | 2018-01-26 | 西门子公司 | Sliding line apparatus |
| CN107635824B (en) * | 2015-03-19 | 2020-10-20 | 西门子交通有限公司 | Sliding wiring device |
| CN105015366A (en) * | 2015-07-16 | 2015-11-04 | 西南交通大学 | Phase switching method for rapidly adjusting phase of reference voltage of inverter |
| CN105015366B (en) * | 2015-07-16 | 2017-04-12 | 西南交通大学 | Phase switching method for rapidly adjusting phase of reference voltage of inverter |
| CN108909541A (en) * | 2018-08-24 | 2018-11-30 | 西南交通大学 | A kind of electric railway AT institute powered construction |
| CN108995563A (en) * | 2018-08-24 | 2018-12-14 | 西南交通大学 | A kind of electric railway switching station powered construction |
| CN108995563B (en) * | 2018-08-24 | 2023-06-20 | 西南交通大学 | Power supply structure of electrified railway switching station |
| CN108909541B (en) * | 2018-08-24 | 2023-06-20 | 西南交通大学 | Power supply structure for AT of electrified railway |
| CN114407734A (en) * | 2021-12-21 | 2022-04-29 | 西南交通大学 | Flexible traction power supply system and protection method |
| CN114407734B (en) * | 2021-12-21 | 2022-08-23 | 西南交通大学 | Flexible traction power supply system and protection method |
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Application publication date: 20120111 |