CN203032416U - A star-connection resistor set damping-type switch auto-switching phase break passing device for an electric railway - Google Patents
A star-connection resistor set damping-type switch auto-switching phase break passing device for an electric railway Download PDFInfo
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- CN203032416U CN203032416U CN 201220666752 CN201220666752U CN203032416U CN 203032416 U CN203032416 U CN 203032416U CN 201220666752 CN201220666752 CN 201220666752 CN 201220666752 U CN201220666752 U CN 201220666752U CN 203032416 U CN203032416 U CN 203032416U
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Abstract
The utility model discloses a star-connection resistor set damping-type switch auto-switching phase break passing device for an electric railway. Electric sections S1, S2, and S3 are connected between a first overhead line system 1 and a first neutral section 1, between a second overhead line system 2 and a second neutral section 2, and between the first neutral section 1 and the second neutral section 2 respectively. During passing of a train, a pantograph connects the wires on the two ends of each of the electric sections S1, S2, and S3 momentarily. Switches K1, K2 and K3 are in bridge connection with the electric sections S1, S2, and S3 respectively. Two ends of a star-connection resistor set R are in bridge connection with the electric section S3 and a third end of the star-connection resistor set R is grounded. Under normal circumstances, the switches K1 and K2 are on and the switch K3 is off. The on and off of the switches K1, K2 and K3 are controlled for realizing automatic switching of the train when the train is passing through the neutral sections a phase break according to the position and current-acquiring state of the train in the phase brake and the time factor (greater than the time the train required for passing through the phase break and less than the maximum running interval) of passing of the phase break by the train. The star-connection resistor set damping-type switch auto-switching phase break passing device is simple in structure and convenient to implement and requires less investment.
Description
Technical field
The utility model relates to a kind of electric railway star damping type switch automatic switchover passing phase insulator device.
Background technology
China's electric railway generally adopts single phase industrial frequency AC system, and for making electric system three-phase load balance as far as possible, electric railway often adopts the scheme of phase sequence, phase-splitting switched-mode power supply by turns.Cut apart with air or insulator between the adjacent service area at phase-splitting subregion place, form the insulated electro phase-splitting, be called for short electric phase-splitting or phase-splitting.
Burn out the overhead contact line parts for preventing that electric locomotive is charged by a minute phase factor arcing, even cause phase fault etc., the undue phase time of train, the driver need manually move back level, close and assist unit, disconnected line circuit breaker, crosses phase-separating section by train inertia, closes line circuit breaker again, close auxiliary unit, advance level restoration power, finished phase process, be commonly called as to fall and bent phase-splitting.Along with the lifting of train speed, too mutually frequent, manually can't have been finished by the driver down at a high speed, must adopt the automatic phase-splitting technology of crossing.Main automatic crossed phase-splitting and had switch automaticallyed switch phase-splitting and ground in ground to cross the branch of phase-splitting present stage.
The phase-splitting of automaticallying switch of ground switch, be to cooperate with the train position signal by the ground switchgear, by switch the feeding section voltage at electric phase-splitting two ends is switched on the neutral section successively, train does not need to do change action, only finished by the ground switch, need outage therebetween, but power-off time is two groups of switch intervals switching time, less to the train speed influence.But easily produce big over voltage in the switch handoff procedure, cause traction net and mobile unit scaling loss, influence locomotive safety running; The technical sophistication of ground induction installation is had relatively high expectations to its sensitieness, and induction was lost efficacy or then can be made a very bad impression by artificial destruction.
Vehicle-mounted automatic to cross phase-splitting be by the cooperating of train and ground signal, and crosses phase-splitting by train control system simulation driver is manual ON TRAINS, namely automatically disconnected auxiliary circuit, the line circuit breaker that breaks, close line circuit breaker, close sequence of operations process such as auxiliary circuit.But train is crossed phase process, and the train dead electricity time is long, and speed loss is big, the lifting of restriction train speed; Have the power supply dead band, train has the risk that is parked in neutral section in the long steep grade highway section; Because the existence of neutral section distributed capacitance and induced voltage, train zero load might cause over voltage when entering neutral section, influence the automatic reliability of crossing phase-splitting.
Cross phase-splitting no matter vehicle-mounted or ground is automatic, all exist high-voltage switch gear to switch and the electric process of transient state by neutral section, even cause over voltage and the excess current of tractive power supply system, influence equipment safety operation.Because the variety of problems that existing passing phase insulator device exists is promoted the use of and all is subjected to certain restriction.Therefore, studying safe, reliable, quick, the stable phase-splitting scheme of crossing, is the needs of safe railway operation, also is an urgent demand of Development of High Speed Railway.
Compare with " a kind of electric railway damping type automatic switchover passing phase insulator device " (201210277013.4) that the contriver had once invented, adopt star resistor group R, can be under normal circumstances as the buffer action that originally plays first contact system 1 and second contact system 2, increase branch road over the ground simultaneously, can guarantee to cross first neutral the section 1 and second neutral section 2 and when switch switches, bring into play damping inhibit function to transient overvoltage, excess current always at train, and can reduce train by the dead electricity time of electric phase-splitting.
The utility model content
The purpose of this utility model just provides a kind of electric railway star damping type switch automatic switchover passing phase insulator device, adopt switch and star resistor group connectivity scenario, utilize isolation and the damping force characteristics of star resistor group, transient overvoltage and the excess current of avoiding the frequent switching of switch to cause, realize train safe automatic phase-splitting and saving operating cost and the maintenance cost crossed reliably.
The utility model solves its technical matters, the technical scheme that adopts is: electric segmentation S1, S2, S3 are connected to respectively between first contact system 1 and first neutral section 1, second contact system 2 and second neutral section 2, first neutral the section 1 and second neutral section 2, when train crossed, pantograph was with the lead momentary connection at electric segmentation S1, S2, S3 two ends; K switch 1, K2 and K3 respectively cross-over connection on electric segmentation S1, S2 and S3, star resistor group R two ends cross-over connection on electric segmentation S3, other end ground connection; K switch 1, K2 and K3 and measurement and control unit constitute automatic switchover system.
Principle of work of the present utility model is: usually K switch 1, K2 are in on-state, and switch 3 is in off-state, and the difference between currents by K switch 1 and K2 is zero; When crossing electric segmentation S1 and feasible difference between currents non-zero by K switch 1 and K2 (namely passing through the electric current of K switch 1 greater than the electric current that passes through K switch 2) as if train from the arrival of first contact system, 1 direction, K switch 1 disconnects, connect K switch 3 then at once, train changes by 2 power supplies of second contact system; After train crosses electric segmentation S3 and enters the second neutral section 2, if when passing through the difference between currents non-zero (namely passing through the electric current of K switch 2 greater than the electric current by K switch 3) of K switch 2 and K3, cut-off switch K3, connect K switch 1 again, otherwise, after postponing through one time (greater than the time of train by electric phase-splitting, but less than minimum running interval), cut-off switch K3 connects K switch 1.In like manner, train arrives from second contact system, 2 directions, then disconnects K2 successively by same rule, connects K3, after train crosses, disconnects K3 again, connects K2, and K switch 1 keeps connecting.
Compared with prior art, the beneficial effects of the utility model are:
One, the utility model utilizes the damping force characteristics of star resistor group, suppresses switch and switches issuable transient overvoltage and excess current and to the adverse effect that tractive power supply system electrical equipment and mobile unit cause, improve power supply reliability and safety.
Two, the utility model cancellation ground sensing device can avoid the ground staff to disturb, and improves reliability.
Three, compare with " a kind of electric railway damping type automatic switchover passing phase insulator device " (201210277013.4) that the contriver had once invented, the utility model can reduce train by the dead electricity time of electric phase-splitting.
Four, this apparatus structure is simple, and is easy to operate, invests lessly, is convenient to implement.
The rated voltage of K switch 1, K2, K3 and star resistor group R is 27.5kV; The rated current of K switch 1, K2 and K3=train rated current; The resistance of each resistance is obtained by its shock damping action and minimal losses among the star resistor group R, as chooses under the corresponding voltage resistance less than 1 Ampere currents.
Switch can be vac switch, also can be electronic power switch, should relatively determine the back through Technological Economy.
The utility model will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
The specific embodiment
Embodiment
Fig. 1 illustrates, a kind of electric railway specific embodiment of the present utility model is: electric segmentation S1, S2, S3 are connected to respectively between first contact system 1 and first neutral section 1, second contact system 2 and second neutral section 2, first neutral the section 1 and second neutral section 2, when train crossed, pantograph was with the lead momentary connection at electric segmentation S1, S2, S3 two ends; K switch 1, K2 and K3 respectively cross-over connection on electric segmentation S1, S2 and S3, star resistor group R two ends cross-over connection on electric segmentation S3, other end ground connection, with track () link to each other; K switch 1, K2 and K3 and measurement and control unit constitute automatic switchover system.
Principle of work of the present utility model is: usually K switch 1, K2 are in on-state, and switch 3 is in off-state, and the difference between currents by K switch 1 and K2 is zero; When crossing electric segmentation S1 and feasible difference between currents non-zero by K switch 1 and K2 (namely passing through the electric current of K switch 1 greater than the electric current that passes through K switch 2) as if train from the arrival of first contact system, 1 direction, K switch 1 disconnects, connect K switch 3 then at once, train changes by 2 power supplies of second contact system; After train crosses electric segmentation S3 and enters the second neutral section 2, if when passing through the difference between currents non-zero (namely passing through the electric current of K switch 2 greater than the electric current by K switch 3) of K switch 2 and K3, cut-off switch K3, connect K switch 1 again, otherwise, after postponing through one time (greater than the time of train by electric phase-splitting, but less than minimum running interval), cut-off switch K3 connects K switch 1 again.In like manner, train arrives from second contact system, 2 directions, then disconnects K2 successively by same rule, connects K3, after train crosses, disconnects K3 again, connects K2, and K switch 1 keeps connecting.
Fig. 1 also shows the process that train L crosses phase-splitting.Train L is operation from left to right on the line, arrives electric segmentation S1 and is powered for it by first contact system 1 before, and is identical by the electric current (as less than 1A) of K switch 1 and K switch 2, and its difference between currents is zero, and K switch 1 and K2 keep connecting, and K switch 3 remains open.If train L makes when passing through the difference between currents non-zero of K switch 1 and K switch 2 after crossing electric segmentation S1, when namely the electric current by K switch 1 is greater than the electric current by K switch 2, then K switch 1 disconnects, connect K switch 3 then at once, train L changes by 2 power supplies of second contact system, and the train dead electricity time only is two groups of switch switching times; Train L crosses electric segmentation S3 and sails the second neutral section 2 into, at this moment, if pass through the difference between currents non-zero of K switch 2 and K3, namely pass through the electric current of K switch 2 greater than the electric current by K switch 3, cut-off switch K3 then, connect K switch 1 again, otherwise, through one time (greater than the time of train by electric phase-splitting, but less than minimum running interval) postpone after, cut-off switch K3 leads to K switch 1 again, waits for that following train arrives.In like manner, train L arrives from second contact system, 2 directions, then disconnects K2 successively by same rule, connects K3, after train L crosses, disconnects K3 again, connects K2, and K switch 1 keeps connecting, and waits for that following train arrives.
Claims (2)
1. an electric railway star damping type switch automatic switchover passing phase insulator device is characterized in that: electric segmentation S1, S2, S3 are connected to respectively between first contact system 1 and first neutral section 1, second contact system 2 and second neutral section 2, first neutral the section 1 and second neutral section 2; K switch 1, K2 and K3 respectively cross-over connection on electric segmentation S1, S2 and S3, star resistor group R two ends cross-over connection on electric segmentation S3, other end ground connection; K switch 1, K2 and K3 and measurement and control unit constitute automatic switchover system.
2. a kind of electric railway star damping type switch automatic switchover passing phase insulator device according to claim 1, it is characterized in that: generally K switch 1, K2 are in on-state, and switch 3 is in off-state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220666752 CN203032416U (en) | 2012-12-06 | 2012-12-06 | A star-connection resistor set damping-type switch auto-switching phase break passing device for an electric railway |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220666752 CN203032416U (en) | 2012-12-06 | 2012-12-06 | A star-connection resistor set damping-type switch auto-switching phase break passing device for an electric railway |
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| CN203032416U true CN203032416U (en) | 2013-07-03 |
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| CN 201220666752 Expired - Fee Related CN203032416U (en) | 2012-12-06 | 2012-12-06 | A star-connection resistor set damping-type switch auto-switching phase break passing device for an electric railway |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103057439A (en) * | 2012-12-06 | 2013-04-24 | 西南交通大学 | Automatic switching passing neutral section system of electrified railway star damping switch |
| CN104192026A (en) * | 2014-09-17 | 2014-12-10 | 铁道第三勘察设计院集团有限公司 | Power switching based electric disconnector for electrified railway overhead line system and monitoring method thereof |
| 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 |
| CN105292141A (en) * | 2014-07-30 | 2016-02-03 | 株洲南车时代电气股份有限公司 | Automatic passing neutral section control system and method for electric motor train unit |
| CN106347175A (en) * | 2016-09-28 | 2017-01-25 | 北京易菲盛景科技有限责任公司 | Improved intelligent electrical sectioning device for alternating current electrified railway |
| CN106488858A (en) * | 2014-06-26 | 2017-03-08 | 株式会社明电舍 | The power-supply device of AC electric vehicle |
-
2012
- 2012-12-06 CN CN 201220666752 patent/CN203032416U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103057439A (en) * | 2012-12-06 | 2013-04-24 | 西南交通大学 | Automatic switching passing neutral section system of electrified railway star damping switch |
| CN103057439B (en) * | 2012-12-06 | 2015-04-22 | 西南交通大学 | Automatic switching passing neutral section system of electrified railway star damping switch |
| CN106488858A (en) * | 2014-06-26 | 2017-03-08 | 株式会社明电舍 | The power-supply device of AC electric vehicle |
| CN106488858B (en) * | 2014-06-26 | 2017-10-13 | 株式会社明电舍 | The power-supply device of AC electric vehicle |
| CN105292141A (en) * | 2014-07-30 | 2016-02-03 | 株洲南车时代电气股份有限公司 | Automatic passing neutral section control system and method for electric motor train unit |
| CN105292141B (en) * | 2014-07-30 | 2018-02-02 | 株洲南车时代电气股份有限公司 | A kind of electric EMU auto-passing neutral section control system and control method |
| CN104192026A (en) * | 2014-09-17 | 2014-12-10 | 铁道第三勘察设计院集团有限公司 | Power switching based electric disconnector for electrified railway overhead line system and monitoring method thereof |
| CN104192026B (en) * | 2014-09-17 | 2016-04-20 | 铁道第三勘察设计院集团有限公司 | Based on electrification railway contact net electric isolating switch and the method for supervising of power supply switching type |
| 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 |
| CN106347175A (en) * | 2016-09-28 | 2017-01-25 | 北京易菲盛景科技有限责任公司 | Improved intelligent electrical sectioning device for alternating current electrified railway |
| CN106347175B (en) * | 2016-09-28 | 2022-05-31 | 北京易菲盛景科技有限责任公司 | Improved intelligent electric phase splitting device for alternating current electrified railway |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20151206 |
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| EXPY | Termination of patent right or utility model |