CN104512278A - Novel ground auto-passing neutral section equipment - Google Patents
Novel ground auto-passing neutral section equipment Download PDFInfo
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- CN104512278A CN104512278A CN201310450962.2A CN201310450962A CN104512278A CN 104512278 A CN104512278 A CN 104512278A CN 201310450962 A CN201310450962 A CN 201310450962A CN 104512278 A CN104512278 A CN 104512278A
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Abstract
The invention relates to novel ground auto-passing neutral section equipment for an electric locomotive, and belongs to the technical field of power electronics. The device can be used for automatic control and protection when the electric locomotive passes a neutral section, overvoltage and inrush current generated in passing the neutral section traditionally are eliminated by means of the switch transformer technology, damage to the locomotive electrical equipment and overhead lines are decreased, the service life is prolonged, and the device can better fulfill the important function on safe and stable operation particularly in the condition of being applied to the high speed EMU.
Description
Technical field
The present invention relates to a kind of new ground type automatic neutral-section passing device; belong to electric locomotive and electric and electronic technical field; can be used for control and scheduling co-design when electric locomotive leads to phase splitting; to eliminate the over voltage of conventional undue phase time generation and to shove; extend the service life of locomotive electric cad system equipment and contact system, especially in EMU situation, more demonstrate the vital function of this device to safe and stable operation.
Background technology
Electric locomotive adopts 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 called electric phase-splitting or is called for short phase-splitting, every 20 ~ 30 kilometers, electric neutral section set by the subregion between substation exit or two substations.When train speed is 200 kilometers/h, within every 6 ~ 10 minutes, wanted once electric phase-splitting non-electricity zone, frequency is very high.
Electric locomotive will pass through non-electricity zone in travelling continually, when adopting ground type automatic neutral-section passing device, non-shut-brake by line circuit breaker in locomotive during phase-separating section, and complete electrical source exchange by ground station equipment, the main transformer of locomotive all can be made at every turn to produce switching surge and shove.Switching surge affects transformer life, and electrical arc erosion contact system even catenary can occur; And shove and reach the several times of rated current, very large Electronmotive Force injury winding, easily cause trip protection, and harmonic content of shoving is very large, causes severe jamming to electrical network.
For electric locomotive phase splitting Problems existing, people have thought that thousand and one way solves.Abroad the main hardware configuration from electric segmentation solves, and as increase arc extinguishing structure, train reduce electric current, turn-off current etc. before entering neutral section, effect is also not obvious.
Along with the raising of China's electrified railway overall trip speed, over voltage, excess current is repeatedly there is in electric locomotive when logical phase splitting, bring serious infringement to locomotive and contact system, badly influence the smooth operation of railway, become one of key issue affecting electrified railway speed-raising.Therefore, research safety, reliable, stable automatic phase splitting scheme are an urgent demands of Development of High Speed Railway.The technical measures of the research superpotential mechanism of locomotive phase splitting and suppression thereof have higher theory significance and actual 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 country paid much attention to automatic passing over of neutral section technology.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of ground type automatic neutral-section passing device of switch transformer technique that utilizes to solve the problem.Switch transformer technique combines voltage transformer and power electronic devices in fact exactly, constitutes the electronic power switch module of high pressure resistant a, big current, makes it in circuit to connect with main circuit of electric locomotive.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions.
A kind of ground type automatic neutral-section passing device, comprises disconnector G2, switch transformer TK, thyristor SCR, programmable controller PLC, starts to control K switch 2; Also comprise reserve isolators G1; One end of described reserve isolators G1 connects main circuit of electric locomotive, another termination power; Upper termination disconnector G2 of switch transformer TK former limit winding, another termination power of G2; The other end that the lower termination of switch transformer former limit winding starts to control K switch 2, K2 is connected between reserve isolators G1 and main circuit of electric locomotive; Be connected to two just antiparallel thyristor SCR between the two ends that the every simplex winding in limit paid by switch transformer, thyristor SCR is controlled by programmable controller PLC.
The control system of described ground type automatic neutral-section passing device adopts PC application or industrial computer COM control system.
When needs power on to main circuit of electric locomotive, first we be added on main transformer primary winding with very low voltage (close to zero), then high voltage gradually, then can limit the generation of shoving to greatest extent; When the power-off of needs main circuit of electric locomotive, we are first i
lseparating brake circuit breaker again when being reduced to very little (close to 0), then can reduce magnetic field energy to greatest extent, reduce cut-off overvoltage.
Simultaneously, this device energy master cock voltage transformer and the sequence of operation of starting to control circuit breaker, the switching voltage (or electric current) and the separating brake voltage (or electric current) that make to start to control circuit breaker all very little (about 5 percent of rated voltage or the no-load current of switch transformer), can electric arc be reduced, greatly extend the life-span of starting to control circuit breaker.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is the main circuit diagram of the automatic phase splitting device of a kind of new ground type.
Fig. 2 have employed the automatic phase splitting device of a kind of new ground type be made up of power electronic devices IGCT replacement thyristor SCR, computer control system COM replacement programmable controller PLC.
Detailed description of the invention
Adopt a kind of new ground type automatic phase splitting device main circuit diagram of switch transformer TK technology as shown in Figure 1.A kind of ground type automatic neutral-section passing device, comprises disconnector G2, switch transformer TK, thyristor SCR, programmable controller PLC, starts to control K switch 2; Also comprise reserve isolators G1; One end of described reserve isolators G1 connects main circuit of electric locomotive, another termination power; Upper termination disconnector G2 of switch transformer TK former limit winding, another termination power of G2; The other end that the lower termination of switch transformer former limit winding starts to control K switch 2, K2 is connected between reserve isolators G1 and main circuit of electric locomotive; Be connected to two just antiparallel thyristor SCR between the two ends that the every simplex winding in limit paid by switch transformer, thyristor SCR is controlled by programmable controller PLC.
The control system of described ground type automatic neutral-section passing device adopts PC application or industrial computer COM control system.If ground station's turn-key system has leeway, then the control of this part also can be performed by ground station's turn-key system.
When locomotive normally runs, vehicle-mounted main traction transformer is powered by contact system through disconnector and line circuit breaker.When Train Approaching electricity phase-separating section, turn-key system receives ground signal, turn-key system first through a switch A to transition line U power transmission, closedly immediately circuit breaker K2 is started to control when PLC detects and transition line U has electricity, switch transformer TK is connected to (disconnector G2 is closed) between transition line U and neutral line, because thyristor SCR is not yet open-minded, therefore centering line is without excitation, transient process can not be produced.PLC makes SCR progressively open-minded immediately afterwards, and neutral line voltage progressively rises, and can not produce shoves also can not produce transient process.
The turn-key system perceived position signal when locomotive enters phase-separating section interlude, power cut signal is sent immediately to PLC, PLC stops trigging pulse immediately, SCR current over-zero turns off, cut-off overvoltage can not be produced, PLC disconnects and starts to control K switch 2, turn-key system disconnects the power-cutting switch A of transition line U, close opposite side power-cutting switch B immediately afterwards, transition line voltage transformer has electricity, close immediately during PLC perception electric signal and start to control circuit breaker K2, switch transformer TK is connected to (disconnector G2 is closed) between transition line U and neutral line, because thyristor SCR is not yet open-minded, therefore centering line is without excitation, transient process can not be produced.PLC makes SCR progressively open-minded immediately afterwards, and neutral line voltage progressively rises, and can not produce shoves also can not produce transient process, and locomotive is powered by opposite side, until enter opposite side contact system.
From said process, when starting to control the 2-in-1 lock of K switch and separating brake, electric current is very little can not produce cut-off overvoltage, and switch contact also can not produce arc light.
Fig. 2 is that on/off switch controls to adopt industrial computer COM control system, and its control method is same as described above; Power electronic devices adopts full control device IGCT, implements PWM and controls.
Two kinds of detailed description of the invention of just this invention of foregoing description, casehistory does not limit essence of an invention Composition of contents, the amendment that person of an ordinary skill in the technical field has made aforesaid detailed description of the invention after having read specification sheets or distortion, do not deviate from essence of an invention and scope.
Claims (3)
1. a new ground type automatic neutral-section passing device, comprises switch transformer (TK), disconnector (G2), starts to control switch (K2), thyristor (SCR), programmable controller (PLC), it is characterized in that, also comprises reserve isolators (G1); The upper termination power of described reserve isolators (G1), the lower endmatcher car owner circuit of reserve isolators (G1); The upper termination disconnector (G2) of switch transformer (TK) former limit winding, another termination power of disconnector (G2), the lower termination of switch transformer (TK) former limit winding starts to control switch (K2), the other end starting to control switch (K2) is connected between reserve isolators (G1) and main circuit of electric locomotive, is connected to two just antiparallel thyristor (SCR) between the two ends of switch transformer (TK) pair every simplex winding in limit.
2. a kind of new ground type automatic neutral-section passing device according to claim 1, is characterized in that, its control system adopts programmable controller (PLC) or industrial computer (COM) control system.
3. a kind of new ground type automatic neutral-section passing device according to claim 1, is characterized in that its half control power electronic devices thyristor (SCR) also can be replaced by the property controlled power electronic devices insulated gate electrode thyristor (IGCT) entirely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310450962.2A CN104512278B (en) | 2013-09-29 | 2013-09-29 | A kind of ground type automatic neutral-section passing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310450962.2A CN104512278B (en) | 2013-09-29 | 2013-09-29 | A kind of ground type automatic neutral-section passing device |
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| CN104512278A true CN104512278A (en) | 2015-04-15 |
| CN104512278B CN104512278B (en) | 2016-08-31 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10203205A (en) * | 1997-01-23 | 1998-08-04 | Mitsubishi Electric Corp | Phase control system for switching circuit breaker |
| JP2000203316A (en) * | 1999-01-11 | 2000-07-25 | Central Japan Railway Co | Feeder switching control device |
| CN101524965A (en) * | 2008-03-03 | 2009-09-09 | 株洲南车时代电气股份有限公司 | Electrical locomotive overvoltage suppression absorbing system and control method thereof |
| CN101774356A (en) * | 2009-01-14 | 2010-07-14 | 李文 | Method for realizing locomotive passing neutral section through progressive phase shift and device thereof |
| EP2415626A1 (en) * | 2009-03-13 | 2012-02-08 | Kabushiki Kaisha Toshiba | Railroad vehicle system and control method therefor |
| CN103213518A (en) * | 2013-03-28 | 2013-07-24 | 天津凯发电气股份有限公司 | Detection system and detection method of ground automatic passing split-phase locomotive position |
-
2013
- 2013-09-29 CN CN201310450962.2A patent/CN104512278B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10203205A (en) * | 1997-01-23 | 1998-08-04 | Mitsubishi Electric Corp | Phase control system for switching circuit breaker |
| JP2000203316A (en) * | 1999-01-11 | 2000-07-25 | Central Japan Railway Co | Feeder switching control device |
| CN101524965A (en) * | 2008-03-03 | 2009-09-09 | 株洲南车时代电气股份有限公司 | Electrical locomotive overvoltage suppression absorbing system and control method thereof |
| CN101774356A (en) * | 2009-01-14 | 2010-07-14 | 李文 | Method for realizing locomotive passing neutral section through progressive phase shift and device thereof |
| EP2415626A1 (en) * | 2009-03-13 | 2012-02-08 | Kabushiki Kaisha Toshiba | Railroad vehicle system and control method therefor |
| CN103213518A (en) * | 2013-03-28 | 2013-07-24 | 天津凯发电气股份有限公司 | Detection system and detection method of ground automatic passing split-phase locomotive position |
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| CN104512278B (en) | 2016-08-31 |
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