CN105835727A - Ground type non-contact automatic neutral-section passing device - Google Patents
Ground type non-contact automatic neutral-section passing device Download PDFInfo
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- CN105835727A CN105835727A CN201510019868.0A CN201510019868A CN105835727A CN 105835727 A CN105835727 A CN 105835727A CN 201510019868 A CN201510019868 A CN 201510019868A CN 105835727 A CN105835727 A CN 105835727A
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Abstract
The invention discloses a ground type non-contact automatic neutral-section passing device and belongs to the technical field of electrified railways and power electronics. The ground type non-contact automatic neutral-section passing device can be used for control and protection when an electric locomotive passes through an electrical neutral section, so that overvoltage and inrush current which are generated when the electric locomotive passes through the neutral section are eliminated, and the service life of electrical equipment of the locomotive and overhead lines is prolonged. Particularly, the device plays an important role in safe and stable operation under the circumstance of a high speed train.
Description
Technical field
The present invention relates to a kind of contactless automatic neutral-section passing device of ground type; belong to electric railway and electric and electronic technical field; can be used for control when electric locomotive leads to phase splitting and protection; to eliminate the overvoltage of undue phase time generation and to shove; extend locomotive electric cad system equipment and the service life of contact net, in the case of EMU, especially more demonstrate this device important function to safe and stable operation.
Background technology
Electric locomotive uses single phase power supply, in order to make Three-phase Power Systems balance, tractive power supply system have employed the method for segmentation commutation, is referred to as electricity split-phase or is called for short split-phase, every 20～30 kilometers, electricity neutral section set by the subregion between electric substation exit or two electric substations.When train speed is 200 kilometers/h, within every 6～10 minutes, wanted once electricity split-phase non-Electric region, frequency is the highest.
Electric locomotive to pass through non-Electric region in travelling continually, when using the most facial automatic neutral-section passing device, when by phase-separating section, in locomotive, main circuit breaker is non-shut-brake, and is completed power supply switching by ground station equipment, and the main transformer of locomotive can be made to produce switching overvoltage and shove every time.Switching overvoltage affects transformer life, and electrical arc erosion contact net even carrier cable can occur；And shove and reach the several times of rated current, the biggest electric power injury winding, easily cause trip protection, and harmonic content of shoving is very big, and electrical network is caused severe jamming.
The problem existed for electric locomotive phase splitting, people have thought that thousand and one way solves.Mainly solving from the hardware configuration of electricity segmentation, reduce electric current, turn-off current etc. before increasing arc extinguishing structure, train entrance neutrality section, effect is the most inconspicuous；
At home, there is employing " intelligent breaker " to realize phase place switching to eliminate overvoltage and to shove problem, but due to inherent shortcomings such as the prebreakdown of mechanical switch, springs, cause switching-on phase error big, overvoltage and problem of shoving can not be solved very well.
Raising along with China's electric railway overall trip speed, repeatedly there is overvoltage, overcurrent when logical phase splitting in electric locomotive, bring serious infringement to locomotive and contact net, badly influence the stable operation of railway, become one of the key issue affecting electric railway speed-raising.Therefore, research safety, reliable, stable automatic phase splitting scheme, be an urgent demand of Development of High Speed Railway.Mechanism and the technical measures of suppression thereof that research locomotive phase splitting overvoltage produces have higher theory significance and real value.
In State Scientific and Technological Commission " 95 " State Commission for Restructuring the Economic Systems, once assigned " research of the automatic passing over of neutral section scheme " task being applicable to high-speed electric railway, illustrated that automatic passing over of neutral section technology was paid much attention to by country.
Summary of the invention
The technical problem to be solved in the present invention is to provide and a kind of utilizes the contactless automatic neutral-section passing device of ground type of switch transformer technique to solve the problems referred to above.Switch transformer technique combines transformator and power electronic devices substantially exactly, constitutes the electronic power switch module of an electric current high pressure resistant, big.
In order to solve above-mentioned technical problem, the present invention is achieved by the following technical solutions:
A kind of contactless automatic neutral-section passing device of ground type, including disconnecting switch G1, G2, G3, switch transformer TK1, TK2, IGCT SCR1, SCR2, programmable controller PLC, maintenance resistance R；Also include protective breaker QF1, QF2, QF3, QF4, disconnecting switch G4, G5；Described disconnecting switch G1, the lower end of G2, G3 meet contact net A, the neutral conductor, contact net B respectively；The upper termination switch transformer TK1 high-pressure side left end of disconnecting switch G1, switch transformer TK1 high-pressure side right-hand member connects QF3 left end, QF1 is connected to two ends, TK1 high-pressure side, and SCR1 is connected to close transformator TK1 low-pressure side two ends by the most antiparallel IGCT, and QF3 right-hand member connects disconnecting switch G2 upper end；The upper termination switch transformer TK2 high-pressure side right-hand member of disconnecting switch G3, switch transformer TK2 high-pressure side left end connects QF4 right-hand member, QF2 is connected to two ends, TK2 high-pressure side, and SCR2 is connected to close transformator TK2 low-pressure side two ends by the most antiparallel IGCT, and QF4 left end connects disconnecting switch G2 upper end；Resistance R is maintained to be connected between the neutral conductor and rail.
The control system of described ground type is contactless automatic neutral-section passing device uses PC application or industrial computer COM control system.
This system also with remote control isolation switch G4, G5 on post, locomotive position sensor CG1, CG2, CG3, CG4 cooperating.
The control system of described ground type is contactless automatic neutral-section passing device is by the control to switch transformer TK1, TK2, realize the phase controlling to switching voltage or gradually open control, because of brake tube SCR, itself there is current over-zero turn-off characteristic again, thus eliminate overvoltage and shove, make locomotive undue phase time safe and stable operation.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described in further detail:
Fig. 1 is the main circuit diagram of the contactless automatic phase splitting device of a kind of ground type.
Fig. 2 is to have employed to be replaced, by power electronic devices IGCT replacement IGCT SCR, computer control system COM, the contactless automatic phase splitting device of a kind of ground type that programmable controller PLC is constituted.
Detailed description of the invention
Use a kind of new contactless automatic phase splitting device main circuit diagram of ground type of switch transformer TK technology as shown in Figure 1: a kind of contactless automatic neutral-section passing device of ground type, including disconnecting switch G1, G2, G3, switch transformer TK1, TK2, IGCT SCR1, SCR2, programmable controller PLC, maintenance resistance R；Also include protective breaker QF1, QF2, QF3, QF4, disconnecting switch G4, G5；Described disconnecting switch G1, the lower end of G2, G3 meet contact net A, the neutral conductor, contact net B respectively；The upper termination switch transformer TK1 high-pressure side left end of disconnecting switch G1, switch transformer TK1 high-pressure side right-hand member connects QF3 left end, QF1 is connected to two ends, TK1 high-pressure side, and SCR1 is connected to close transformator TK1 low-pressure side two ends by the most antiparallel IGCT, and QF3 right-hand member connects disconnecting switch G2 upper end；The upper termination switch transformer TK2 high-pressure side right-hand member of disconnecting switch G3, switch transformer TK2 high-pressure side left end connects QF4 right-hand member, QF2 is connected to two ends, TK2 high-pressure side, and SCR2 is connected to close transformator TK2 low-pressure side two ends by the most antiparallel IGCT, and QF4 left end connects disconnecting switch G2 upper end；Resistance R is maintained to be connected between the neutral conductor and rail.
The control system of described ground type is contactless automatic neutral-section passing device uses PC application control system.If earth station's turn-key system has leeway, then the control of this part also can be performed by earth station's turn-key system.
This system also with remote control isolation switch G4, G5 on post, locomotive position sensor CG1, CG2, CG3, CG4 cooperating.
When locomotive is close to electricity phase-separating section, control system receives CG1 ground signal, and first control system makes TK1 turn in the voltage suitable moment, and it is electric that the neutral conductor obtains A phase；Owing to being connected to resistance R on the neutral conductor, therefore the most there is not induced voltage on the neutral conductor, without transient overvoltage during connection A phase electricity yet.
When pantograph bridging contact net A and the neutral conductor, because of the two isoelectric level therefore do not have arc light and produce.
When pantograph disengages net A completely into neutral area, first control system makes TK1 in voltage power-off of suitable moment；When detecting in TK1 after without big electric current, TK2 is made to turn in the suitable moment of contact net B phase voltage；Thus make locomotive main transformer when power is off without overvoltage, power on time no-flashy-flow.
When locomotive enters contact net B, CG4 is to master control system signal, and control system is signaled immediately and disconnected TK2, and control system enters the state waiting that next column locomotive arrives.
From above-mentioned, turning off TK2 conducting from TK1, neutral conductor power-off about 20ms to 30ms, locomotive control perception will have power-off to occur, and therefore this device can be adapted to any vehicle.
For one direction driving phase-separating section, if using locomotive by time electric current cut signal as voltage, then locomotive position sensor CG1, CG2, CG3, CG4 can cancel, and become without the contactless automatic neutral-section passing device of ground transaucer formula.
During on-the-spot application, concrete condition to be combined of still needing adds various protection circuit in main circuit.
Fig. 2 is that on/off switch controls to use industrial computer COM control system, and its control method is same as described above；Power electronic devices uses full-controlled device IGCT to implement PWM control.
Two kinds of detailed description of the invention of simply this invention of foregoing description, illustrate and the flesh and blood of invention is not construed as limiting, amendment that aforesaid detailed description of the invention has been made after having read description by person of an ordinary skill in the technical field or deformation, all without departing from the spirit and scope of invention.
Claims (3)
1. the contactless automatic neutral-section passing device of ground type, including disconnecting switch (G1), (G2), (G3), switch transformer (TK1), (TK2), IGCT (SCR1), (SCR2), Programmable Logic Controller (PLC), maintenance resistance (R)；Also include protective breaker (QF1), (QF2), (QF3), (QF4), disconnecting switch (G4), (G5)；Described disconnecting switch (G1), (G2), the lower end of (G3) connect contact net (A), the neutral conductor, contact net (B) respectively；Upper termination switch transformer (TK1) the high-pressure side left end of disconnecting switch (G) 1, switch transformer (TK1) high-pressure side right-hand member connects (QF3) left end, (QF1) (TK1) two ends, high-pressure side it are connected to, (SCR1) is connected to close transformator (TK1) low-pressure side two ends by the most antiparallel IGCT, and (QF3) right-hand member connects disconnecting switch (G2) upper end；Upper termination switch transformer (TK2) the high-pressure side right-hand member of disconnecting switch (G3), switch transformer (TK2) high-pressure side left end connects (QF4) right-hand member, (QF2) (TK2) two ends, high-pressure side it are connected to, (SCR2) is connected to close transformator (TK2) low-pressure side two ends by the most antiparallel IGCT, and (QF4) left end connects disconnecting switch (G2) upper end；Resistance (R) is maintained to be connected between the neutral conductor and rail.
A kind of contactless automatic neutral-section passing device of new ground type the most according to claim 1, it is characterised in that its control system uses programmable controller (PLC) or industrial computer (COM) control system.
A kind of contactless automatic neutral-section passing device of new ground type the most according to claim 1, it is characterised in that its half control power electronic devices IGCT (SCR) can also be replaced by the property controlled power electronic devices insulated gate electrode IGCT (IGCT) entirely.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510019868.0A CN105835727A (en) | 2015-01-15 | 2015-01-15 | Ground type non-contact automatic neutral-section passing device |
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| CN201510019868.0A CN105835727A (en) | 2015-01-15 | 2015-01-15 | Ground type non-contact automatic neutral-section passing device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106183897A (en) * | 2016-09-23 | 2016-12-07 | 西南交通大学 | A kind of electric railway subregion institute's automatic neutral-section passing system and control method thereof |
| CN106394318A (en) * | 2016-11-02 | 2017-02-15 | 株洲变流技术国家工程研究中心有限公司 | Ground automatic neutral-section passing device and control method thereof |
| CN109835213A (en) * | 2017-11-29 | 2019-06-04 | 株洲中车时代电气股份有限公司 | Ground automatic neutral-section passing device and its control method used in a kind of subregion |
| CN110091756A (en) * | 2018-01-31 | 2019-08-06 | 株洲中车时代电气股份有限公司 | Split-phase phase change control method, controller and system are crossed in a kind of ground |
| CN110091762A (en) * | 2018-01-31 | 2019-08-06 | 株洲中车时代电气股份有限公司 | A kind of ground method for controlling passing neutral section and device |
| CN110091759A (en) * | 2018-01-31 | 2019-08-06 | 株洲中车时代电气股份有限公司 | A kind of ground automatic neutral-section passing device and method |
| CN115642533A (en) * | 2022-12-23 | 2023-01-24 | 武汉戎汇电通科技有限公司 | Equipotential connection arc extinguishing device and method |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3492309A4 (en) * | 2016-09-23 | 2020-04-01 | Southwest Jiaotong University | Automatic passing phase-separation system for section post of electrified railway, and control method therefor |
| WO2018054344A1 (en) * | 2016-09-23 | 2018-03-29 | 西南交通大学 | Automatic passing phase-separation system for section post of electrified railway, and control method therefor |
| CN109789810A (en) * | 2016-09-23 | 2019-05-21 | 李群湛 | A kind of electric railway subregion institute's automatic neutral-section passing system and its control method |
| CN106183897A (en) * | 2016-09-23 | 2016-12-07 | 西南交通大学 | A kind of electric railway subregion institute's automatic neutral-section passing system and control method thereof |
| RU2714329C1 (en) * | 2016-09-23 | 2020-02-14 | Саутвэст Цзяотун Юниверсити | System for automatic crossing of phases separation points for electrified sections of railways and method of administration of such system |
| CN106394318A (en) * | 2016-11-02 | 2017-02-15 | 株洲变流技术国家工程研究中心有限公司 | Ground automatic neutral-section passing device and control method thereof |
| CN109835213A (en) * | 2017-11-29 | 2019-06-04 | 株洲中车时代电气股份有限公司 | Ground automatic neutral-section passing device and its control method used in a kind of subregion |
| CN109835213B (en) * | 2017-11-29 | 2021-12-24 | 株洲中车时代电气股份有限公司 | Ground automatic neutral section passing device for subareas and control method thereof |
| CN110091756A (en) * | 2018-01-31 | 2019-08-06 | 株洲中车时代电气股份有限公司 | Split-phase phase change control method, controller and system are crossed in a kind of ground |
| CN110091762A (en) * | 2018-01-31 | 2019-08-06 | 株洲中车时代电气股份有限公司 | A kind of ground method for controlling passing neutral section and device |
| CN110091759A (en) * | 2018-01-31 | 2019-08-06 | 株洲中车时代电气股份有限公司 | A kind of ground automatic neutral-section passing device and method |
| CN110091762B (en) * | 2018-01-31 | 2021-11-19 | 株洲中车时代电气股份有限公司 | Ground passing neutral section control method and device |
| CN110091756B (en) * | 2018-01-31 | 2022-12-02 | 株洲中车时代电气股份有限公司 | Ground passing neutral phase commutation control method, controller and system |
| CN115642533A (en) * | 2022-12-23 | 2023-01-24 | 武汉戎汇电通科技有限公司 | Equipotential connection arc extinguishing device and method |
| CN115642533B (en) * | 2022-12-23 | 2023-02-28 | 武汉戎汇电通科技有限公司 | Equipotential connection arc extinguishing device and method |
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Application publication date: 20160810 |