CN101746283A - Electrified railroad homo-phase traction power supply system - Google Patents
Electrified railroad homo-phase traction power supply system Download PDFInfo
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- CN101746283A CN101746283A CN 201010123860 CN201010123860A CN101746283A CN 101746283 A CN101746283 A CN 101746283A CN 201010123860 CN201010123860 CN 201010123860 CN 201010123860 A CN201010123860 A CN 201010123860A CN 101746283 A CN101746283 A CN 101746283A
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Abstract
The invention discloses an electrified railroad homo-phase traction power supply system. A traction transformer (SS1) of a traction substation is a three-phase-two-phase transformer; three phases (A, B and C) of the primary side of the traction transformer (SS1) are connected with a public power grid; a voltage reduction transformer (G), a first single-phase current transformer (M1), a direct-current capacitor (C) and a second single-phase current transformer (M2) are connected between an alpha output phase and a beta output phase of the secondary side in turn; the alpha phase supplies power to a locomotive (L), and the output voltage of the alpha phase is 27.5kV; and the output voltage of the beta phase is between 600 and 2,000V. The system can implement two-arm homo-phase power supply of the railroad traction substation without split phase, reduces the split phase link, is favorable for high-speed, stable and safe operation of the railroad, and has the advantages of simple structure, low cost and convenient implementation.
Description
Technical field
The present invention relates to a kind of electric railway cophase supply system
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.But for guaranteeing the three-phase equilibrium of municipal power supply system, reduce negative phase-sequence and idle simultaneously, single phase power supply can not directly use in electrified railway, and must take three-phase inlet wire, the commutation output mode of powering in turn by the traction transformer of traction substation.When adopting three-phase-two-phase traction transformer in the traction substation, the two-phase of voltage transformer output α mutually and β mutually, respectively to the feeding section power supply of uplink and downlink, thereby realize using in turn of two-phase, the basic balance of powering of realizing.Realize by the phase-splitting link to the conversion of β phase mutually by α in the substation.Locomotive when operation will be constantly, continually by the phase-splitting link.
Usually locomotive is crossed the process of phase-splitting and is: when locomotive operation to phase-splitting link place, motorcycle pantograph need earlier with α mutually feeding section disconnect, enter into neutral section, and then enter into the β phase by neutral section.The normally automatic phase-splitting excessively of existing undue phase method is finished automatically by automatic neutral-section passing device on the locomotive, need not manual intervention.
The existence of crossing phase process has brought a series of problem to railway transportation: one, undue phase time has a power process, at neutral section locomotive is to rely on the inertia operation, thereby train is run out of steam at short notice, and speed reduces, in long steep grade and departures location, influence bigger; Especially at a high speed, the heavy haul transport locomotive, even may cause the improper parking of train.Two, under the high-speed cruising condition, frequent though the electric neutral section of automatic mistake does not need artificial intervention because of operating voltage height, switching motion, make its accuracy and reliability not high, also have a strong impact on the safe operation of locomotive.
Summary of the invention
Purpose of the present invention just provides a kind of electrified railroad homo-phase traction power supply system, and this system can realize two arm cophase supplies of rail traction substation and need not phase-splitting, has reduced and has crossed the phase-splitting link, helps the high speed of railway, steady, safe operation; And this system architecture is simple, and cost is low, is convenient to implement.
The present invention solves its technical matters, the technical scheme that is adopted is: a kind of electrified railroad homo-phase traction power supply system, its composition is: the traction transformer of traction substation is three-phase-two phase transformer, the former limit three-phase of traction transformer links to each other with utility network, and the α output on inferior limit is connected with step-down transformer, single-phase converter one, dc capacitor, single-phase converter two in turn mutually and between the β output mutually; α is locomotive power supply mutually, and its output voltage is 27.5kV; The output voltage of β phase is 600～2000V.
Principle of work of the present invention is: this system adopts three-phase-two phase transformer, the voltage of the output phase α of voltage transformer is 27.5kV, by this in opposite directions locomotive power, be substation's left and right sides feeding section all with the output of voltage transformer mutually α link to each other, thereby the voltage that guarantees substation's left and right sides feeding section is in full accord; Simultaneously since α mutually and β be connected with the electric energy conversion and control that step-down transformer, single-phase converter one, dc capacitor, single-phase converter two have constituted a kind of AC-DC-AC between mutually in turn, realize the comprehensive compensation of the quality of power supply, guarantee that the former limit three phase current of whole traction substation is symmetrical substantially.
Carry out in the comprehensive compensation process at single-phase converter one, dc capacitor, single-phase converter two, because the output voltage of the β phase on time limit is low only to be 600～2000V, can satisfy the voltage withstand capability of single-phase converter two, therefore, need not to be provided with step-up transformer between β and the single-phase converter two.
Compared with prior art, the invention has the beneficial effects as follows:
One, realizes two arm cophase supplies of rail traction substation and need not phase-splitting, reduced and crossed the phase-splitting link, helped the high speed of railway, steady, safe operation.
Two, traction port in traction transformer time limit only connects a step-down transformer, has saved the step-up transformer of β phase, and the number of having saved voltage transformer has been simplified the structure of system, and the traction substation occupied ground reduces, and has reduced investment, is convenient to later maintenance.
Three, the output voltage of traction transformer time limit winding β phase is 600～2000V, and transformer insulated designing requirement is low, has reduced traction transformer winding voltage grade, has reduced investment and occupation of land, is convenient to implement.
Four, if system of the present invention is used for same supply network, since in the same supply network each traction system architecture identical with connection mode, therefore, each traction substation is in full accord to the power supply phase place of locomotive, also need not phase-splitting between each substation, thereby can realize the power supply that is open to traffic in the same supply network, in the supply line of same supply network, completely abolish all phase-splitting links, further guarantee the high speed of railway, steady, safe operation.
Above-mentioned traction transformer Scott is voltage transformer, balanced impedance matching transformer, YNvd voltage transformer or Vv voltage transformer.
The invention will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1.
Fig. 2 is the structural representation of the embodiment of the invention 2.
Fig. 3 is the structural representation of the embodiment of the invention 3.
Fig. 4 is the structural representation of the embodiment of the invention 4.
The specific embodiment
Embodiment 1
Fig. 1 illustrates, a kind of specific embodiment of the present invention is: in a kind of electrified railroad homo-phase traction power supply system, the traction transformer SS1 of traction substation is three-phase-two phase transformer, the former limit three-phase A of traction transformer SS1, B, C link to each other with utility network, and the α output on inferior limit is connected with step-down transformer G, single-phase converter one M1, dc capacitor C, single-phase converter two M2 in turn mutually and between the β output mutually; α is locomotive L power supply mutually, and its output voltage is 27.5kV; The output voltage of β phase is 600～2000V.
Fig. 1 also illustrates, and this routine traction transformer SS1 is that Scott is a voltage transformer.
Embodiment 2
Fig. 2 illustrates, a kind of specific embodiment of the present invention is: in a kind of electrified railroad homo-phase traction power supply system, the traction transformer SS1 of traction substation is three-phase-two phase transformer, the former limit three-phase A of traction transformer SS1, B, C link to each other with utility network, and the α output on inferior limit is connected with step-down transformer G, single-phase converter one M1, dc capacitor C, single-phase converter two M2 in turn mutually and between the β output mutually; α is locomotive L power supply mutually, and its output voltage is 27.5kV; The output voltage of β phase is 600～2000V.
Fig. 2 also illustrates, and this routine traction transformer SS1 is a balanced impedance matching transformer.
Embodiment 3
Fig. 3 illustrates, a kind of specific embodiment of the present invention is: in a kind of electrified railroad homo-phase traction power supply system, the traction transformer SS1 of traction substation is three-phase-two phase transformer, the former limit three-phase A of traction transformer SS1, B, C link to each other with utility network, and the α output on inferior limit is connected with step-down transformer G, single-phase converter one M1, dc capacitor C, single-phase converter two M2 in turn mutually and between the β output mutually; α is locomotive L power supply mutually, and its output voltage is 27.5kV; The output voltage of β phase is 600～2000V.
Fig. 3 also illustrates, and this routine traction transformer SS1 is the YNvd voltage transformer.
Embodiment 4
Fig. 4 illustrates, a kind of specific embodiment of the present invention is: in a kind of electrified railroad homo-phase traction power supply system, the traction transformer SS1 of traction substation is three-phase-two phase transformer, the former limit three-phase A of traction transformer SS1, B, C link to each other with utility network, and the α output on inferior limit is connected with step-down transformer G, single-phase converter one M1, dc capacitor C, single-phase converter two M2 in turn mutually and between the β output mutually; α is locomotive L power supply mutually, and its output voltage is 27.5kV; The output voltage of β phase is 600～2000V.
Fig. 4 also illustrates, and this routine traction transformer SS1 is or the Vv voltage transformer.
Claims (2)
1. electrified railroad homo-phase traction power supply system, it is characterized in that: the traction transformer of traction substation (SS1) is three-phase-two phase transformer, the former limit three-phase (A, B, C) of traction transformer (SS1) links to each other with utility network, and the α output on inferior limit is connected with step-down transformer (G), single-phase converter one (M1), dc capacitor (C), single-phase converter two (M2) in turn mutually and between the β output mutually; α is locomotive (L) power supply mutually, and its output voltage is 27.5kV; The output voltage of β phase is 600～2000V.
2. a kind of electrified railroad homo-phase traction power supply system according to claim 1 is characterized in that: described traction transformer (SS1) is Scott voltage transformer, balanced impedance matching transformer, YNvd voltage transformer or Vv voltage transformer.
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| CN 201010123860 CN101746283B (en) | 2010-03-15 | 2010-03-15 | Electrified railroad homo-phase traction power supply system |
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| CN 201010123860 CN101746283B (en) | 2010-03-15 | 2010-03-15 | Electrified railroad homo-phase traction power supply system |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102104247A (en) * | 2011-01-17 | 2011-06-22 | 西南交通大学 | Same-phase power supply equipment relay protection system and method |
| CN102310785A (en) * | 2011-05-30 | 2012-01-11 | 李子晗 | Electric railway damping automatic passing neutral section system |
| CN102582468A (en) * | 2012-03-06 | 2012-07-18 | 株洲南车时代电气股份有限公司 | Tractive power supply system based on cophase power supply |
| CN102647103A (en) * | 2012-05-07 | 2012-08-22 | 李春生 | Multi-level current source-type converter and multi-level injection method thereof |
| CN103036242A (en) * | 2012-12-30 | 2013-04-10 | 西南交通大学 | Comprehensive compensation system for Vv wiring traction substation with out-of-phase and in-phase compatibility |
| CN103552487A (en) * | 2013-10-17 | 2014-02-05 | 南车株洲电力机车研究所有限公司 | Co-phase power supply device and traction power supply system |
| CN103683289A (en) * | 2013-12-13 | 2014-03-26 | 湖南大学 | Cophase power supply mode power quality integrated control system of LC coupling electric railway |
| CN104015632A (en) * | 2014-05-30 | 2014-09-03 | 吉林大学 | Power supply system without passing neutral phases in whole journey of high-speed passenger transport line motor train unit |
| CN104753359A (en) * | 2015-01-04 | 2015-07-01 | 河海大学 | Novel power frequency power electronic transformer and implementation method thereof |
| CN105922894A (en) * | 2016-04-22 | 2016-09-07 | 中国船舶重工集团公司第七〇二研究所 | Passing neutral section system based on high-power converter device, and control method thereof |
| CN108428538A (en) * | 2018-05-22 | 2018-08-21 | 卧龙电气银川变压器有限公司 | A kind of not equal appearance scott drauqht transformer |
| CN108599161A (en) * | 2018-06-20 | 2018-09-28 | 西南交通大学 | A kind of through tractive power supply system |
| CN108735463A (en) * | 2017-04-13 | 2018-11-02 | 株洲中车时代电气股份有限公司 | A kind of Scott Connection Traction Transformers |
| CN109435783A (en) * | 2018-10-25 | 2019-03-08 | 中铁二院工程集团有限责任公司 | Negative sequence management system for electric railway traction power supply system AT power supply mode |
| CN110299713A (en) * | 2019-06-25 | 2019-10-01 | 西南交通大学 | A kind of tractive power supply system imbalance of three-phase voltage compensation method counted and wind power plant influences |
| CN111585291A (en) * | 2020-06-15 | 2020-08-25 | 西南交通大学 | Comprehensive compensation device and method for in-phase traction substation |
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Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102104247B (en) * | 2011-01-17 | 2013-07-10 | 西南交通大学 | Same-phase power supply equipment relay protection method |
| CN102104247A (en) * | 2011-01-17 | 2011-06-22 | 西南交通大学 | Same-phase power supply equipment relay protection system and method |
| CN102310785A (en) * | 2011-05-30 | 2012-01-11 | 李子晗 | Electric railway damping automatic passing neutral section system |
| CN102582468A (en) * | 2012-03-06 | 2012-07-18 | 株洲南车时代电气股份有限公司 | Tractive power supply system based on cophase power supply |
| CN102582468B (en) * | 2012-03-06 | 2013-12-25 | 株洲南车时代电气股份有限公司 | Tractive power supply system based on cophase power supply |
| CN102647103A (en) * | 2012-05-07 | 2012-08-22 | 李春生 | Multi-level current source-type converter and multi-level injection method thereof |
| CN103036242A (en) * | 2012-12-30 | 2013-04-10 | 西南交通大学 | Comprehensive compensation system for Vv wiring traction substation with out-of-phase and in-phase compatibility |
| CN103552487B (en) * | 2013-10-17 | 2015-11-18 | 南车株洲电力机车研究所有限公司 | A kind of cophase supply device and tractive power supply system |
| CN103552487A (en) * | 2013-10-17 | 2014-02-05 | 南车株洲电力机车研究所有限公司 | Co-phase power supply device and traction power supply system |
| CN103683289A (en) * | 2013-12-13 | 2014-03-26 | 湖南大学 | Cophase power supply mode power quality integrated control system of LC coupling electric railway |
| CN104015632A (en) * | 2014-05-30 | 2014-09-03 | 吉林大学 | Power supply system without passing neutral phases in whole journey of high-speed passenger transport line motor train unit |
| CN104753359A (en) * | 2015-01-04 | 2015-07-01 | 河海大学 | Novel power frequency power electronic transformer and implementation method thereof |
| CN104753359B (en) * | 2015-01-04 | 2018-01-30 | 河海大学 | A kind of power frequency electric power electronic transformer and its implementation |
| CN105922894A (en) * | 2016-04-22 | 2016-09-07 | 中国船舶重工集团公司第七〇二研究所 | Passing neutral section system based on high-power converter device, and control method thereof |
| CN105922894B (en) * | 2016-04-22 | 2018-01-19 | 中国船舶重工集团公司第七一二研究所 | A kind of neutral-section passing system and its control method based on high-power current converting device |
| CN108735463A (en) * | 2017-04-13 | 2018-11-02 | 株洲中车时代电气股份有限公司 | A kind of Scott Connection Traction Transformers |
| CN108428538A (en) * | 2018-05-22 | 2018-08-21 | 卧龙电气银川变压器有限公司 | A kind of not equal appearance scott drauqht transformer |
| CN108599161A (en) * | 2018-06-20 | 2018-09-28 | 西南交通大学 | A kind of through tractive power supply system |
| CN108599161B (en) * | 2018-06-20 | 2023-09-01 | 西南交通大学 | Through traction power supply system |
| CN109435783A (en) * | 2018-10-25 | 2019-03-08 | 中铁二院工程集团有限责任公司 | Negative sequence management system for electric railway traction power supply system AT power supply mode |
| CN109435783B (en) * | 2018-10-25 | 2023-09-22 | 中铁二院工程集团有限责任公司 | Negative sequence management system for AT power supply mode of electrified railway traction power supply system |
| CN110299713A (en) * | 2019-06-25 | 2019-10-01 | 西南交通大学 | A kind of tractive power supply system imbalance of three-phase voltage compensation method counted and wind power plant influences |
| CN111585291A (en) * | 2020-06-15 | 2020-08-25 | 西南交通大学 | Comprehensive compensation device and method for in-phase traction substation |
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Effective date of registration: 20160616 Address after: 610031 Sichuan, Chengdu, Jinniu District, No. two North Ring Road, No. 1, No. 111 Patentee after: Southwest Jiaotong University Patentee after: Li Qunzhan Address before: 610031 Sichuan, Chengdu, Jinniu District, No. two North Ring Road, No. 1, No. 111 Patentee before: Southwest Jiaotong University |