CN105313723A - Method for controlling electric motor train unit to automatically pass through neutral zone - Google Patents
Method for controlling electric motor train unit to automatically pass through neutral zone Download PDFInfo
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Abstract
The invention discloses a method for controlling an electric motor train unit to automatically pass through a neutral zone. According to the method, when a train passes by the neutral zone under the normal condition, an inversion module in a traction converter is automatically controlled to be converted into a braking condition, and a train motor is converted to be in a generator state; a blockage rectification module feeds kinetic energy of the train back to a filtering middle direct current loop in the traction converter to maintain and assist normal work of load; when the train passes through the neutral zone, the rectification module is restarted to retreat from the automatic generation state during passing of the neutral zone, and the inversion module is converted into a corresponding condition according to operation instructions of a driver. The method has the advantages that impact to the train in the automatic neutral zone passing process can be relieved effectively, the comfort of the train is improved and the like.
Description
Technical field
The present invention is mainly concerned with the control field of track traffic, refers in particular to a kind ofly to be applicable to electric EMU automatically by the control method of phase-separating section.
Background technology
Electrified railway is the threephase load as far as possible in balanced feeding system, and contact system generally adopts segmentation commutation power-supply service mode.For preventing phase fault, employ insulator arrangement in the junction not between homophase feeding section to split, thus between homophase feeding section, do not forming the insulation phase-separating section (hereinafter referred to as " phase-separating section ") without electricity, and just there is a phase-separating section every a segment distance circuit.Due to the existence of phase-separating section, phase-separating section will be travelled frequently in electric EMU operational process, in the process, if it is improper that electric EMU controls, train band can be caused to be loaded into phase-separating section, the accidents such as easy initiation train traction current transformer, traction transformer, pantograph and wiring circuit contact net scaling loss, serious harm line security, affect the normal operation of train.
At present, the control program of domestic and international widely used train automatic passing over of neutral section can be divided into following 5 kinds:
1, driver's M/C scheme.
During electric railway line construction, before each phase-separating section, all be provided with " breaking " direction board reminded and be about to enter phase-separating section, phase-splitting is crossed for reminding driver's M/C train line circuit breaker that breaks, train coasting is by after phase-separating section, circuit has " conjunction " direction board, reminds driver's M/C to close train line circuit breaker and traction convertor is devoted oneself to work again, makes train recover normal and runs.
2, ground automatic switch automatic switchover scheme.
This scheme is mainly modern architecture in Japan and adopts, in addition, Xi'an Railway Bureau Wang Ya puts down and delivers " ground of China's independent research controls automatic passing over of neutral section technology innovation " literary composition in January, 2011 at << China railway >>, it is also proposed the ground automatic switch automatic switchover neutral-section passing system solution of a set of China independent research.
The cardinal principle of the program is: arrange a set of neutral segment at contact system phase-separating section, and two ends have two shackles and two-phase contact system to insulate respectively, and adopt overlap structure, can be flowed continuously during to ensure that pantograph slips over.Ground automatic switch switching device has 2 vacuum breakers S1, S2 to be connected across respectively in contact system two-phase, and can be powered to neutral segment by them.When have train by time, ground automatic switch switching device detects train position by train position sensor, and by the break-make of control S1 and S2 switch, the commutation realizing neutral segment is powered, and enables train pass through phase-separating section in the situation of dead electricity hardly.
3, on-pole switch auto-breaking scheme.
This scheme mainly adopts in countries such as Switzerland.The groundwork of the program is: form on-pole switch auto-breaking equipment by two vacuum magnetic control line bags, two vacuum breakers, two surge absorbers and corresponding contact system segmentation, equipment is symmetrically distributed in phase-separating section both sides, the switch auto-breaking equipment be arranged on pillar is flowed by making two vacuum magnetic control line bags during magnetic control line bag section respectively at train, two vacuum breakers are allowed to produce separating brake and vacuum extinction action, cut off train power supply, make train coasting pass through phase-separating section.
4, train auto-matic control power-off scheme.
The program takes full advantage of electrified circuit is provided with magnet steel feature on turnover ground, phase-separating section place, phase-splitting vehicle-mounted detection apparatus was installed ON TRAINS, when train arrives phase-separating section magnet steel place, vehicle-mounted detection apparatus receives ground magnet steel information and sends into train traction control system, pull-in control system time delay disconnects train line circuit breaker, train coasting is made to enter phase-separating section, serve as phase-splitting vehicle-mounted detection apparatus and ground magnet steel information again detected, then represent that train passes through phase-separating section, train traction control system will close line circuit breaker again makes traction convertor again devote oneself to work, make train recover normal to run.
5, traction convertor intermediate dc loop not power-off scheme.
The patent of invention that China Patent No. CN102431469B discloses " a kind of motor train unit subsidiary loop crosses phase-splitting uninterrupted power supply device ".Uninterrupted power supply device in this patent comprises pantograph, line circuit breaker, voltage transformer, traction electric machine, four-quadrant rectifier, static power invertor, AuCT.At undue phase time, the assistant load of motor train unit is from the power taking of middle DC loop link, and AuCT carries out inversion, ensure that the assistant load of motor train unit is in the not power-off of undue phase time.Though this patent can ensure that the assistant load of motor train unit is in the not power-off of undue phase time, does not relate to for concrete control convenience and control method, also not mentioned cross phase-splitting complete after the subsequent process scheme of uninterrupted power supply device.
In sum, above-mentioned existing electric EMU train cross individual-phase control scheme exist deficiency have:
(1) segment length is just had to be about the non-electricity zone of 30m in China's electrified railway every 20 ~ 25km, during electric EMU high-speed cruising, whole process will travel frequently over multiple phase-separating section, various signal is looked at as Bing because driver also needs to carry out various necessary Cao when train operation, M/C is crossed phase-splitting driver's labour intensity will be caused to increase frequently, other caution of operation power is disperseed, and easily causes phase-splitting misoperation, and affects the normal operation of train.
(2) ground automatic switch automatically switch and on-pole switch auto-breaking scheme all exist construction and operation maintenance cost expense huge, train pass through time traction convertor and voltage transformer by the risk of heavy current impact.
(3) train auto-matic control power-off scheme is at undue phase time, because line circuit breaker disconnects, train subordinate inverter can be caused to shut down, cause train assistant load as temporary out of service in air-conditioning, room light system.Because train operation whole process will travel frequently over multiple phase-separating section, this will cause harmful effect to passenger's ride comfort and auxiliary load device life-span, and assistant load is start and stop frequently, also will have a strong impact on the service life of these loads.
(4) though existing have subsidiary loop to cross phase-splitting uninterrupted power supply device, but how to make train recover accidental conditions after subsidiary loop not power-off completes too mutually and also do not propose rational solution, and concrete subsidiary loop not power-off undue phase control process is also indefinite.
Summary of the invention
The technical problem to be solved in the present invention is just: the technical matters existed for prior art, the invention provides a kind of can effectively alleviate automatic passing over of neutral section process to the impact of train, improve the electric EMU of train traveling comfort automatically by the control method of phase-separating section.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
Electric EMU automatically by a control method for phase-separating section, for: under train nominal situation, through phase-separating section, the inversion module controlled in traction convertor is converted to damped condition automatically, and train motor is converted to Generator Status; Block rectification module, the filtering intermediate dc loop that train momentum feeds back in traction convertor is normally worked to maintain assistant load; When train is by after phase-separating section, restarts rectification module, exit automatic passing over of neutral section generating state, by driver operation instruction, inversion module is converted into corresponding operating mode.
As a further improvement on the present invention: through phase-separating section, under the traction and damped condition of train, meet the following conditions and namely enter automatic passing over of neutral section generating state: (1) receives overconfidence number; (2) train present speed was greater than the minimum speed threshold of phase-splitting requirement; (3) current reality plays moment and is less than or equal to inversion module was converted into phase-splitting generating state maximum moment allowed threshold value.
As a further improvement on the present invention: through phase-separating section, under the inertia operating mode of train, meet the following conditions and namely enter automatic passing over of neutral section generating state: (1) receives overconfidence number; (2) train present speed was greater than the minimum speed threshold of phase-splitting requirement.
The present invention further provides another kind of electric EMU automatically by the control method of phase-separating section, for: under train nominal situation, through phase-separating section, first block rectification module, then the inversion module controlled in traction convertor is converted to damped condition automatically, and train motor is converted to Generator Status; The filtering intermediate dc loop that train momentum feeds back in traction convertor is normally worked to maintain assistant load; When train is by after phase-separating section, restarts rectification module, exit automatic passing over of neutral section generating state, by driver operation instruction, inversion module is converted into corresponding operating mode.
As a further improvement on the present invention: through phase-separating section, under the traction and damped condition of train, meet the following conditions and namely enter automatic passing over of neutral section generating state: (1) receives overconfidence number; (2) train present speed was greater than the minimum speed threshold of phase-splitting requirement; (3) current reality plays moment and is less than or equal to inversion module was converted into phase-splitting generating state maximum moment allowed threshold value.
As a further improvement on the present invention: through phase-separating section, under the inertia operating mode of train, meet the following conditions and namely enter automatic passing over of neutral section generating state: (1) receives overconfidence number; (2) train present speed was greater than the minimum speed threshold of phase-splitting requirement.
Compared with prior art, the invention has the advantages that:
1, electric EMU of the present invention is automatically by the control method of phase-separating section, and this control method can control, completely without the need to manual intervention the traction of electric EMU, braking, coasting or constant speed operating mode turnover phase-separating section automatically automatically.Use the method not only train traction current transformer (hereinafter referred to as CI) filtering intermediate dc loop electric energy can be made to maintain train assistant load when crossing phase-separating section, improve the service life of assistant load and circuit phase-separating section equipment, reduce electric EMU and cross phase-splitting integrated input cost, also train can be made to cross the impulsive control of phase-separating section in reasonable level, well can ensure that undue phase time train is to the requirement of comfort level.
2, the present invention all can realize automatic passing over of neutral section to the traction of electric EMU, braking, coasting and constant speed operating mode and controls; Without the need to manual intervention, alleviate the working strength of undue phase time driver greatly.
3, first play actual moment to train during automatic passing over of neutral section of the present invention to unload according to preventing the slope impacted, then be converted to the mode of phase-splitting generating state, effectively can alleviate the impact of automatic passing over of neutral section process to train, improve train traveling comfort.
4, the present invention transferred owing to have employed phase process motor the scheme that electrical power generators makes the not power-off of filtering intermediate DC circuit to, effectively can promote the service life of train assistant load and circuit phase-separating section equipment, reduced train and crossed phase-splitting integrated input cost.
Accompanying drawing explanation
Fig. 1 is the principle schematic of the present invention's traction convertor in embody rule example.
Fig. 2 is that the inventive method carries out the schematic flow sheet of automatic passing over of neutral section control at traction working condition.
Fig. 3 is the schematic flow sheet that the inventive method controls in damped condition automatic passing over of neutral section.
Fig. 4 is the schematic flow sheet of the inventive method in the logic control of coasting operating mode automatic passing over of neutral section.
Detailed description of the invention
Below with reference to Figure of description and specific embodiment, the present invention is described in further details.
As shown in Figure 1, for electric EMU of the present invention is automatically by the control object " traction convertor (ConvertorInverter) " of the control method of phase-separating section, be called for short: CI.CI adopts major-minor integrated design, comprises contactor control circuit, rectification module, filtering intermediate DC circuit, auxiliary change module and inversion module.Train rises after pantograph closes line circuit breaker, and single phase industrial frequence line voltage inputs the contactor control circuit of CI after transformer pressure-reducing, and contactor control circuit charges to filtering intermediate DC circuit; After middle dc voltage reaches certain value, charging complete, start rectification module, it is specified middle dc voltage needed for CI normally works by the rectification of single phase industrial frequence line voltage, inversion module and auxiliary change module are respectively from the power taking of filtering intermediate DC circuit, the inversion of intermediate dc electricity is that three phasevoltage controls motor by inversion module, and the inversion of intermediate dc electricity normally works for auxiliary varying load into three phasevoltage by auxiliary change module.
At the accidental conditions of electric EMU, the rectification module of traction convertor, auxiliary change module and inversion module start all, control method of the present invention is: under train nominal situation (as traction, braking, coasting and constant speed), through phase-separating section, automatic control inversion module is converted to damped condition, train motor is converted to Generator Status, blocks rectification module, the filtering intermediate dc loop that train momentum feeds back in traction convertor is normally worked to maintain assistant load; When train is by after phase-separating section, restarts rectification module, exit automatic passing over of neutral section generating state, by driver operation instruction, inversion module is converted into corresponding operating mode.
Based on control method of the present invention, by the automatic passing over of neutral section control method under various operating mode, details are as follows respectively below.
One, under train traction operating mode, carry out the scheme of automatic passing over of neutral section control.
As shown in Figure 2, at electric EMU traction working condition, automatic passing over of neutral section generating state can be entered when meeting following condition: (1) receives overconfidence number simultaneously.
(2) train present speed was greater than the minimum speed threshold of phase-splitting requirement; This is because in order to maintain CI filtering intermediate dc loop electric energy, train momentum is converted into electric energy by employing braking energy feedback mode, cause machine to break for train when preventing automatic passing over of neutral section stops at phase-separating section, the speed that train enters phase-separating section must be greater than minimum speed threshold.
(3) current reality plays moment and is less than or equal to inversion module was converted into phase-splitting generating state maximum moment allowed threshold value.If current traction working condition actual performance moment is greater than, and inversion module was converted into phase-splitting generating state maximum moment allowed threshold value, inversion module was converted into phase-splitting generating state moment, train impacts larger, the traveling comfort of train operation can be had influence on, so now need, by the moment unloading slope preventing train from occurring to impact, actual for traction performance moment values to be down to inversion module and to be converted into phase-splitting generating state maximum moment allowed threshold value.
Entered phase-splitting generating state, inversion module need transform damped condition, and motor will be converted into Generator Status, can maintain assistant load normally work to CI filtering intermediate dc loop feedback electric energy, now block rectification module, no longer adopt rectification module to maintain filtering intermediate dc loop electric energy.Train is by after phase-separating section, line voltage recovers, overconfidence number is cancelled, now stop automatic passing over of neutral section to control, exited phase-splitting generating state, restart rectification module and maintain intermediate dc loop electric energy, by driver operation instruction, inversion module is converted into corresponding operating mode, allow train recover normal and run.
Two, under train braking operating mode, carry out the scheme of automatic passing over of neutral section control.
As shown in Figure 3, at electric EMU damped condition, when meeting following condition, automatic passing over of neutral section generating state can be entered simultaneously:
(1) overconfidence number is received.
(2) train present speed was greater than the minimum speed threshold of phase-splitting requirement.This is because in order to maintain CI filtering intermediate dc loop electric energy, train momentum is converted into electric energy by employing braking energy feedback mode, cause machine to break for train when preventing automatic passing over of neutral section stops at phase-separating section, the speed that train enters phase-separating section must be greater than minimum speed threshold.
(3) current reality plays moment and is less than or equal to inversion module was converted into phase-splitting generating state maximum moment allowed threshold value.If current brake operating mode actual performance moment is greater than, and inversion module was converted into phase-splitting generating state maximum moment allowed threshold value, inversion module was converted into phase-splitting generating state moment, train impacts larger, the traveling comfort of train operation can be had influence on, so now need, by the moment unloading slope preventing train from occurring to impact, actual for braking performance moment values to be down to inversion module and to be converted into phase-splitting generating state maximum moment allowed threshold value.
Because damped condition inversion module is in damped condition, so directly Generator Status can will be converted into by motor when crossing phase-splitting generating state and meeting, maintain assistant load to CI filtering intermediate dc loop feedback electric energy normally to work, now block rectification module, no longer adopt rectification module to maintain filtering intermediate dc loop electric energy.Train is by after phase-separating section, line voltage recovers, overconfidence number is cancelled, now stop automatic passing over of neutral section to control, exited phase-splitting generating state, restart rectification module and maintain intermediate dc loop electric energy, by driver operation instruction, inversion module is converted into corresponding operating mode, allow train recover normal and run.
Three, under train coasting operating mode, carry out the scheme of automatic passing over of neutral section control.
As shown in Figure 4, at electric EMU traction working condition, when meeting following condition, automatic passing over of neutral section generating state can be entered simultaneously:
(1) overconfidence number is received.
(2) train present speed was greater than the minimum speed threshold of phase-splitting requirement.For maintaining CI filtering intermediate dc loop electric energy, train momentum is converted into electric energy by employing braking energy feedback mode, cause machine to break for train when preventing automatic passing over of neutral section stops at phase-separating section, the speed that train enters phase-separating section must be greater than minimum speed threshold.
Because coasting operating mode actual performance moment values is zero, be bound to be less than and inversion module was converted into phase-splitting generating state maximum moment allowed threshold value, so inversion module directly can be transferred to the damped condition of phase-splitting generating state by condition (1), (2) when meeting simultaneously, motor thus be converted into Generator Status, can maintain assistant load to CI filtering intermediate dc loop feedback electric energy and normally work.Now block rectification module, no longer adopt rectification module to maintain filtering intermediate dc loop electric energy.Train is by after phase-separating section, line voltage recovers, overconfidence number is cancelled, now stop automatic passing over of neutral section to control, exited phase-splitting generating state, restart rectification module and maintain intermediate dc loop electric energy, by driver operation instruction, inversion module is converted into corresponding operating mode, allow train recover normal and run.
Four, under train constant speed operating mode, carry out the scheme of automatic passing over of neutral section control.
The constant-speed operation operating mode because of electric EMU of electric EMU is also mutually transform in traction, braking and these three kinds of operating modes of coasting operating mode, and the control of therefore automatic passing over of neutral section only needs a kind of scheme of getting in above traction, braking or coasting three kinds of operating modes to perform.
In other embodiments, because the power of all types of electric EMU assistant load is different, for the lower-powered train of some assistant loads, when automatic passing over of neutral section controls, also can adopt and first block rectification module, make inversion module be in damped condition according to the above-mentioned method crossing phase-splitting generating again, train motor is converted to the automatic passing over of neutral section control that Generator Status completes electric EMU.Therefore, adopt and first block rectification module, re-use the method that the inventive method carries out automatic passing over of neutral section control and also belong to protection scope of the present invention.
Below be only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-described embodiment, all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, should be considered as protection scope of the present invention.
Claims (6)
1. electric EMU is automatically by a control method for phase-separating section, it is characterized in that, under train nominal situation, through phase-separating section, the inversion module controlled in traction convertor is converted to damped condition automatically, and train motor is converted to Generator Status; Block rectification module, the filtering intermediate dc loop that train momentum feeds back in traction convertor is normally worked to maintain assistant load; When train is by after phase-separating section, restarts rectification module, exit automatic passing over of neutral section generating state, by driver operation instruction, inversion module is converted into corresponding operating mode.
2. electric EMU according to claim 1 is automatically by the control method of phase-separating section, it is characterized in that, through phase-separating section, under the traction and damped condition of train, meet the following conditions and namely enter automatic passing over of neutral section generating state: (1) receives overconfidence number; (2) train present speed was greater than the minimum speed threshold of phase-splitting requirement; (3) current reality plays moment and is less than or equal to inversion module was converted into phase-splitting generating state maximum moment allowed threshold value.
3. electric EMU according to claim 1 is automatically by the control method of phase-separating section, it is characterized in that, through phase-separating section, under the inertia operating mode of train, meets the following conditions and namely enters automatic passing over of neutral section generating state: (1) receives overconfidence number; (2) train present speed was greater than the minimum speed threshold of phase-splitting requirement.
4. electric EMU is automatically by a control method for phase-separating section, it is characterized in that, under train nominal situation, through phase-separating section, first block rectification module, then the inversion module controlled in traction convertor is converted to damped condition automatically, and train motor is converted to Generator Status; The filtering intermediate dc loop that train momentum feeds back in traction convertor is normally worked to maintain assistant load; When train is by after phase-separating section, restarts rectification module, exit automatic passing over of neutral section generating state, by driver operation instruction, inversion module is converted into corresponding operating mode.
5. electric EMU according to claim 4 is automatically by the control method of phase-separating section, it is characterized in that, through phase-separating section, under the traction and damped condition of train, meet the following conditions and namely enter automatic passing over of neutral section generating state: (1) receives overconfidence number; (2) train present speed was greater than the minimum speed threshold of phase-splitting requirement; (3) current reality plays moment and is less than or equal to inversion module was converted into phase-splitting generating state maximum moment allowed threshold value.
6. electric EMU according to claim 4 is automatically by the control method of phase-separating section, it is characterized in that, through phase-separating section, under the inertia operating mode of train, meets the following conditions and namely enters automatic passing over of neutral section generating state: (1) receives overconfidence number; (2) train present speed was greater than the minimum speed threshold of phase-splitting requirement.
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| CN106042957A (en) * | 2016-06-01 | 2016-10-26 | 北京交通大学 | Excessive phase control strategy for traction converter of hybrid power motor train unit |
| CN107433884A (en) * | 2017-08-15 | 2017-12-05 | 中车株洲电力机车有限公司 | A kind of undue phase method of train based on satellite fix and device |
| CN108859868A (en) * | 2018-06-11 | 2018-11-23 | 中铁工程设计咨询集团有限公司 | A kind of method and system of vehicle-mounted automatic passing over of neutral section under cophase supply mode |
| CN110884505A (en) * | 2019-10-17 | 2020-03-17 | 株洲中车时代电气股份有限公司 | Control method and system for passing neutral section of train |
| CN111025952A (en) * | 2018-10-10 | 2020-04-17 | 株洲中车时代电气股份有限公司 | Train ATP automatic neutral section passing network control method, device and equipment |
| CN112124361A (en) * | 2020-09-03 | 2020-12-25 | 交控科技股份有限公司 | Automatic passing neutral section method, system and device |
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| CN106042957B (en) * | 2016-06-01 | 2019-04-30 | 北京交通大学 | A kind of hybrid power traction converter of motor train unit crosses individual-phase control strategy |
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| CN111025952B (en) * | 2018-10-10 | 2022-12-09 | 株洲中车时代电气股份有限公司 | Method, device and equipment for controlling automatic neutral section passing network of train ATP |
| CN111025952A (en) * | 2018-10-10 | 2020-04-17 | 株洲中车时代电气股份有限公司 | Train ATP automatic neutral section passing network control method, device and equipment |
| CN110884505A (en) * | 2019-10-17 | 2020-03-17 | 株洲中车时代电气股份有限公司 | Control method and system for passing neutral section of train |
| CN112124361A (en) * | 2020-09-03 | 2020-12-25 | 交控科技股份有限公司 | Automatic passing neutral section method, system and device |
| CN113386824A (en) * | 2020-11-09 | 2021-09-14 | 北京全路通信信号研究设计院集团有限公司 | Method and system for protecting stop point by controlling train passing neutral section through ATO |
| CN113386824B (en) * | 2020-11-09 | 2022-10-25 | 北京全路通信信号研究设计院集团有限公司 | Stopping point protection method and system for controlling train passing neutral section by ATO (automatic train operation) |
| CN112721958A (en) * | 2021-01-15 | 2021-04-30 | 中车青岛四方机车车辆股份有限公司 | Traction auxiliary system and method suitable for power outage area and vehicle |
| CN113098359A (en) * | 2021-04-13 | 2021-07-09 | 山东理工大学 | Motor starting control method |
| CN113085563A (en) * | 2021-04-21 | 2021-07-09 | 中国第一汽车股份有限公司 | Retarding braking method and device for electric vehicle |
| CN113859288A (en) * | 2021-12-03 | 2021-12-31 | 石家庄国祥运输设备有限公司 | Control method of subway air conditioner |
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