CN104057843B - Ground energy storage type automatic phase splitting device - Google Patents
Ground energy storage type automatic phase splitting device Download PDFInfo
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- CN104057843B CN104057843B CN201410277675.0A CN201410277675A CN104057843B CN 104057843 B CN104057843 B CN 104057843B CN 201410277675 A CN201410277675 A CN 201410277675A CN 104057843 B CN104057843 B CN 104057843B
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Abstract
The invention discloses a kind of ground energy storage type automatic phase splitting device; belong to electric locomotive and electric and electronic technical field; can be used for protection when electric locomotive leads to phase splitting; the overvoltage that phase splitting produces is led to elimination electric locomotive; extend locomotive electric cad system equipment and the service life of contact net, in the case of EMU, especially more embody this device important function to electric railway safe and stable operation.
Description
Technical field
The present invention relates to a kind of ground energy storage type automatic phase splitting device, belong to electric locomotive and Power Electronic Technique neck
Territory.
Background technology
Electric locomotive uses single phase power supply, and in order to make Three-phase Power Systems balance, tractive power supply system have employed segmentation and changes
The method of phase, is referred to as electricity split-phase or is called for short split-phase, every 20～30 kilometers, and dividing between electric substation exit or two electric substations
District is provided with electricity neutral section.When train speed is 200 kilometers/h, within every 6～10 minutes, wanted once electricity split-phase non-Electric region, frequently
Rate is the highest.Electric locomotive to pass through split-phase non-Electric region in travelling continually, when using ground type automatic neutral-section passing device,
Non-shut-brake by main circuit breaker in locomotive during phase-separating section, and completed power supply switching by ground station equipment, locomotive can be made every time
Main transformer and contact net produce switching overvoltage.Switching overvoltage affects transformer life, and electrical arc erosion can be occurred to connect
Touch net even carrier cable.The problem existed for electric locomotive phase splitting, people have thought that thousand and one way solves.External main
Solve from the hardware configuration of electricity segmentation, before increasing arc extinguishing structure, the neutral section of train entrance, reduce electric current, turn-off current etc.
Deng, effect is the most inconspicuous.
Along with the raising of China's electric railway overall trip speed, repeatedly there is electricity when logical phase splitting in electric locomotive
Pressure, overcurrent, bring serious infringement to locomotive and contact net, badly influence the stable operation of railway, becomes impact electrically
Change one of key issue of railway speed increase.Therefore, research safety, reliable, stable automatic phase splitting scheme, be high-speed railway
An urgent demand of development.The mechanism of research locomotive phase splitting overvoltage and the technical measures of suppression thereof have higher theoretical meaning
Justice and real value.
In State Scientific and Technological Commission " 95 " State Commission for Restructuring the Economic Systems, once assigned and be applicable to the " automatic of high-speed electric railway
Cross the research of split-phase scheme " task, illustrate that automatic passing over of neutral section technology is paid much attention to by country.Domestic many universities and research
This problem has been done substantial amounts of research and experiment work by unit, achieves many gratifying achievements, but owing to mechanical switch closes
The unstability of lock time and the high cost problem of electronic power switch, this problem is never well solved.
Summary of the invention
It is known that cause insulation breakdown cause short circuit overvoltage caused by following reason: 1. pantograph with connect
The arc excitation higher-order of oscillation between net-fault, this high-frequency oscillation voltage is superimposed upon on power-frequency voltage formation overvoltage；2. switch is cut
During produce overvoltage make the perceptual device core sataration connect in the line excite the higher-order of oscillation, this high-frequency oscillation voltage
It is superimposed upon on power-frequency voltage formation overvoltage；3. transformator powers on to shove and produces overvoltage on the line.Electric locomotive is the most electric
During split-phase, above-mentioned three kinds of situations all can occur and cause overvoltage, often result in power supply unit and damage.Visible, if our energy
Enough installation energy storage type overvoltage inhibiting apparatus on the neutral conductor, make neutral conductor voltage stabilization, then power supply unit can be avoided to damage.
In order to solve above-mentioned technical problem, the present invention is achieved by the following technical solutions, and a kind of capacitance energy storage type is automatic
Phase splitting device, including switch K1, transformator TK, rectifier bridge DK, storage capacitor C；Also include switch K2, charging resistor R1,
Drive module CF, repid discharge gated transistor IGBT, fast electric discharge resistance R3, discharge resistance R2, programmable controller PLC；Institute
The one end stating switch K1 connects the phase-separating section neutral conductor, and another terminates transformator TK, and transformator TK secondary meets full-wave rectification bridge DK；Fill
A termination rectifier bridge anode after electricity resistance R1 and switch K2 parallel connection, another terminates storage capacitor C；Discharge resistance R2 is connected in parallel on energy storage
The two ends of electric capacity C；The two ends of storage capacitor C it are connected in parallel on after repid discharge gated transistor IGBT and fast electric discharge resistance R3 series connection,
Module CF is driven to be connected on the control pole of gated transistor IGBT.The control system of described ground energy storage type automatic phase splitting device
System uses programmable controller PLC or industrial computer COM control system.
When powering on, cut-offfing state at switch K2, electric capacity C charges through resistance R1, switchs K2 Guan Bi after being full of.When on the neutral conductor
When having overvoltage to produce, transformator TK secondary voltage rises simultaneously, rectifier bridge output voltage rises, storage capacitor C is electrically charged, because of
Capacitance is very big, and therefore the rising of voltage is restricted.Having served as voltage energy makes more greatly the voltage of capacitor C reach a certain height
Time, repid discharge gated transistor IGBT is triggered conducting, and fast electric discharge resistance R3 adds electric discharge, stops the excessive liter of overvoltage
High.The effect of discharge resistance R2 be have a power failure after make the voltage back to zero of storage capacitor C.
Accompanying drawing explanation
Fig. 1 is the main circuit diagram of a kind of ground energy storage type phase splitting device.
Fig. 2 is to have employed to be replaced by power electronic devices IGCT replacement gated transistor IGBT, computer control system COM
Change a kind of energy storage type overvoltage neutral section that programmable controller PLC is constituted.
Detailed description of the invention
Use a kind of phase splitting device main circuit diagram automatically of capacitance energy storage technology as shown in Figure 1: a kind of energy storage type is certainly
Dynamic phase splitting device, including switch K1, transformator TK, rectifier bridge DK, storage capacitor C；Also include switching K2, charging resistor
R1, driving module CF, repid discharge gated transistor IGBT, fast electric discharge resistance R3, discharge resistance R2, programmable controller PLC；
One end of described switch K1 connects the phase-separating section neutral conductor, and another terminates transformator TK, and transformator TK secondary meets full-wave rectification bridge DK；
A termination rectifier bridge anode after charging resistor R1 and switch K2 parallel connection, another terminates storage capacitor C；Discharge resistance R2 is connected in parallel on storage
The two ends of energy electric capacity C；It is connected in parallel on the two of storage capacitor C after repid discharge gated transistor IGBT and fast electric discharge resistance R3 series connection
End, drives module CF to be connected on the control pole of gated transistor IGBT.The control of described capacitance energy storage type automatic neutral-section passing device
System uses PC application or industrial computer COM 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.
When locomotive is properly functioning before phase-separating section, vehicle-mounted main tractive transformer through disconnecting switch and main circuit breaker by contact net
A powers, and the neutral conductor exists certain voltage because of the sensing of A, B contact net, and storage capacitor is also charged with certain voltage；Work as row
Car receives ground transaucer signal close to turn-key system during electricity phase-separating section, and first turn-key system send A through a switch to the neutral conductor
Electricity mutually, at this moment can produce transient process, and the most rectified circuit of transformator TK charges to electric capacity C, due to depositing of storage capacitor C
, therefore any disturbance will not be produced,；When pantograph moves closer to the neutral conductor, because of the neutral conductor and A contact net common-battery source thus will not
There is arc light to produce, i.e. will not produce overvoltage；When train enters neutral conductor district, after A phase power supply to be disconnected, access B phase power supply,
Now due on the neutral conductor with the presence of residual voltage thus transient overvoltage can be produced on the neutral conductor, transformer-secondary voltage the most immediately with
Being electrically charged immediately with rising and storage capacitor C, make neutral conductor voltage to increase the highest, overvoltage is inhibited.
Fig. 2 is for using industrial computer COM control system, and its control method is same as described above；Power electronic devices uses
Full-controlled device IGCT is implemented PWM and is controlled.
Two kinds of detailed description of the invention of simply this invention of foregoing description, illustrate and do not constitute the flesh and blood of invention
Limit, the 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 modification, all without departing from the spirit and scope of invention.
Claims (4)
1. a ground energy storage type automatic phase splitting device, including switch K1, transformator (TK), rectifier bridge (DK), energy storage electricity
Hold (C)；Also include switching K2, charging resistor (R1), driving module (CF), repid discharge gated transistor (IGBT), putting soon
Resistance (R3), discharge resistance (R2), Programmable Logic Controller (PLC)；One end of described switch K1 connects the phase-separating section neutral conductor, another
Termination transformator (TK), transformator (TK) secondary connects full-wave rectification bridge (DK)；One end after charging resistor (R1) and switch K2 parallel connection
Connect rectifier bridge anode, another termination storage capacitor (C)；Discharge resistance (R2) is connected in parallel on the two ends of storage capacitor (C)；Repid discharge
It is connected in parallel on the two ends of storage capacitor (C) after gated transistor (IGBT) and resistance (R3) of discharging soon series connection, drives module (CF) to connect
Between the control pole of rectifier bridge anode and gated transistor (IGBT).
Ground the most according to claim 1 energy storage type automatic phase splitting device, it is characterised in that control system uses can
Programmable controller (PLC) or industrial computer (COM) control system, if earth station's turn-key system has leeway, then control part
Also can be performed by earth station's turn-key system.
Ground the most according to claim 1 energy storage type automatic phase splitting device, it is characterised in that work as power electronic devices
When using full-controlled device (IGCT), big electric current can be obtained and entirely control regulation.
Ground the most according to claim 1 energy storage type automatic phase splitting device, it is characterised in that when electricity occurred in electrical network
During pressure, storage capacitor (C) limits overvoltage and harmonic wave, repid discharge gated transistor (IGBT) and resistance (R3) of discharging soon resistance
Stop voltage overshoot rising.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410277675.0A CN104057843B (en) | 2014-06-20 | 2014-06-20 | Ground energy storage type automatic phase splitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410277675.0A CN104057843B (en) | 2014-06-20 | 2014-06-20 | Ground energy storage type automatic phase splitting device |
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| CN104057843A CN104057843A (en) | 2014-09-24 |
| CN104057843B true CN104057843B (en) | 2016-08-31 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105799553B (en) * | 2016-04-22 | 2018-03-16 | 中国船舶重工集团公司第七一二研究所 | A kind of electronic type ground automatic neutral-section passing device |
| CN107425524A (en) * | 2017-06-28 | 2017-12-01 | 南京航空航天大学 | A kind of rectification suppression circuit for the specific higher hamonic wave of Traction networks |
| CN108327579A (en) * | 2018-03-15 | 2018-07-27 | 中铁二院工程集团有限责任公司 | Rail traffic surface power supply system conversion system and conversion method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101524966B (en) * | 2008-03-03 | 2011-03-30 | 株洲南车时代电气股份有限公司 | Electrical locomotive overvoltage suppression absorbing system and electrical locomotive overvoltage suppression absorbing device |
| RU2365017C1 (en) * | 2008-06-26 | 2009-08-20 | Открытое Акционерное Общество "Российские Железные Дороги" | Dc traction substation with capacitive power storage units |
| KR20110116811A (en) * | 2010-04-20 | 2011-10-26 | 한국철도기술연구원 | Contactless and automatic power switching system in dead section and method thereof |
| CN103094903B (en) * | 2013-01-30 | 2015-10-21 | 株洲变流技术国家工程研究中心有限公司 | A kind of car net resonance floor synthetic governing system |
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