CN106379201A - Current switching control method based on cascaded multilevel over-electric phase break system - Google Patents
Current switching control method based on cascaded multilevel over-electric phase break system Download PDFInfo
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- CN106379201A CN106379201A CN201610890444.6A CN201610890444A CN106379201A CN 106379201 A CN106379201 A CN 106379201A CN 201610890444 A CN201610890444 A CN 201610890444A CN 106379201 A CN106379201 A CN 106379201A
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- current
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M3/00—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power
- B60M3/04—Arrangements for cutting in and out of individual track sections
Abstract
The invention discloses a current switching control method based on a cascaded multilevel over-electric phase break system. A current transformer of the cascaded multilevel over-electric phase break system is controlled to output current; when a pantograph of a train is in contact with a power supply arm of a traction power supply network and a neutral section at the same time, controllable switching of load current, required by the train, between the power supply arm of the traction network and the neutral section is realized, so that no impact current is generated when the pantograph is separated from or connected to the power supply arm of the traction network or the neutral section, and the adverse effect on a vehicle network in a transient process is avoided. According to the current switching control method, when an electric locomotive or a motor train unit passes through the cascaded multilevel over-electric phase break system, no impact is generated during load current switching of the train, the problems of arc discharge and overvoltage of interceptive current are solved, and the train can flexibly pass through an electrical split phase.
Description
Technical field
The present invention relates to the field of electric split-phase is had and in particular to one kind using traditional single phase industrial frequency traction electric power system etc.
Current switching control method based on cascade connection multi-level ground surface over-current split-phase system.
Background technology
The method of electric locomotive (EMUs) phase splitting has multiple, and early stage train speed is slower, generally adopts manual mistake
Electric split-phase, is provided with the operation of split-phase mark conductor driver phase splitting in phase-separating section.To before neutral section, driver is first by draft stage potential drop
To 0, disconnect accessory system, then tractive transformer former limit main circuit breaker is disconnected, make locomotive not charged by neutral section.Locomotive enters
After entering the service area of next phase supply arm, driver closes main breaking and starts accessory system, progressively recovers traction level.Manually
Phase splitting driver's high labor intensive, must be by driver's power-off, if there be not power-off phase splitting when crossing split-phase, can be in entrance
Property section when Traction networks and pantograph produce overvoltage arcing, burn out Traction networks and pantograph, or even the major accident such as line to line fault,
This problem of continuous improvement with train running speed will be more prominent.
At present, electric locomotive (EMUs) generally adopts automatic phase splitting method, mainly has two kinds：Ground is automatically undue
Mutually with automatic passing over of neutral section on car.During using ground surface over-current split-phase, electric locomotive (EMUs) does not need any action, and main circuit breaks
The electric time is very short, the suitable gradient larger and the big difficult location of freight volume, Japanese this method is used for EMU.
Accompanying drawing 1 is the fundamental diagram of traditional ground automatic neutral-section passing device, and its course of work is as follows：Work as electric locomotive
(EMUs) run to that during CG1, (current of traffic is as shown in the figure；CG1～CG4 is locomotive position sensor, opens for producing
Close switching signal, when train operation is to a certain position, corresponding switch motion), switch K1 closure, neutral section contact net is by A phase
Power supply, treats that locomotive enters neutral section, when reaching second place sensor CG2, K1 disconnects, and K2 closes rapidly, completes neutral section and supply
The commutation conversion of electricity.Because now neutral section is powered by B phase, electric locomotive (EMUs) can be without any additional behaviour
Make, load passes through split-phase section in the case of being basically unchanged, when locomotive sails out of at CG4, K2 disconnects, and each equipment recovers original shape
State.During backward going, two switches are controlled to disconnect in turn and closure with reverse order by control system.During ground surface over-current split-phase,
Electric locomotive (EMUs) carries out voltage conversion in neutral section, is that band carries disconnection split-phase switch, can produce cut-off overvoltage, split
Close requirement higher；It is fully loaded another split-phase switch of closure simultaneously, locomotive has tractive transformer, because two-phase phase place differs
Sample, the stable state magnetic flux of transformer has difference, can be because dynamic magnetic flux saturation leads to combined floodgate surge overcurrent during combined floodgate.For rotation
Motor the locomotive from tractive transformer power taking, also result in accessory system excessively stream during combined floodgate.
For the shortcoming of traditional ground phase splitting device, researcher is had to propose corrective measure, the ground after improvement
As shown in Figure 2, its operation principle is as follows for phase splitting device：(the train operation when electric locomotive (EMUs) runs to CG1
Direction is as shown in the figure；CG1～CG4 is locomotive position sensor, and for producing switch switching signal, train operation is to a certain position
When, corresponding switch motion), controller sends control signal makes IGCT SCR1, SCR2 turn on.A phase voltage is become by step-down
Depressor TX1, IGCT SCR1, SCR2, step-up transformer TX3 reaches neutral section.The triggering of IGCT SCR1, SCR2 adopts voltage
Zero cross fired.When locomotive driving is to CG3, controller sends control signal makes IGCT SCR1, SCR2 turn off, controller simultaneously
Sending control signal makes SCR3, SCR4 turn on.So neutral section is just powered by A phase and is changed into B phase and powers.B phase voltage passes through fall
Pressure transformer TX2, IGCT SCR3, SCR4, step-up transformer TX3 reaches neutral section.When at locomotive driving to CG4, control
Device sends control signal makes IGCT SCR1, SCR2, SCR3, SCR4 turn off.System returns to reset condition.It can be seen that, after improvement
Scheme still can not be fully solved the shortcoming of traditional ground phase splitting device, due to needing to adopt step transformer, increase
Complexity and the cost of system are added.
In sum, there is problems with the ground surface over-current neutral section of prior art：1) due in whole process being
Fully loaded section breaker is higher to switching requirements；2), during neutral section voltage conversion, it is that band carries disconnection split-phase switch, can produce and dam
Overvoltage；3) when neutral section carries out voltage switching, before and after switching, voltage-phase is inconsistent, the stable state of tractive transformer on locomotive
Magnetic flux just has difference, can be because dynamic magnetic flux saturation leads to combined floodgate surge overcurrent during combined floodgate.For electric rotating machine and from leading
Draw the locomotive of transformer power taking, during combined floodgate, also result in accessory system excessively stream.
Content of the invention
The technical problem to be solved is to provide a kind of electricity based on cascade connection multi-level ground surface over-current split-phase system
Stream method for handover control, makes related system when electric locomotive band carries logical phase splitting, is capable of electric current needed for electric locomotive
Controlled switching between traction power supply arm and neutral section, thus realize that pantograph is disconnected with the no flow point of target wire or no stream closes
Close.
For solving above-mentioned technical problem, the technical solution used in the present invention is：
A kind of current switching control method based on cascade connection multi-level ground surface over-current split-phase system, comprises the following steps：
Step 1：In the ground surface over-current split-phase system being built using cascade connection multi-level ground surface over-current neutral section, have for true
Determine the primary importance sensor CG1 of locomotive position, second place sensor CG2, the 3rd position sensor CG3, the 4th position pass
Sensor CG4；
Have for measuring contact net voltage phase between contact net supply arm A, contact net supply arm B and phase splitting device
The contact net voltage-phase detection module PTA of position and contact net voltage-phase detection module PTB；
Electric locomotive has train load electric current real time emission device, and ground surface over-current split-phase system has corresponding train and bears
Carry electric current real time receiving apparatus；
Step 2：When electric locomotive travels to primary importance sensor CG1 position, primary importance sensor CG1 signal opens
Dynamic, carry out the once adjustment of train load electric current, train real time load current emission device sends train load current signal；
Step 3：After ground surface over-current split-phase system train load electric current real time receiving apparatus receive, using dq Current Decoupling control
Method processed controls output current of converter in ground surface over-current split-phase system, so that load current needed for electric locomotive is powered by contact net
Arm A is transferred to neutral section；
Step 4：When train proceeds to the 3rd position sensor CG3, carry out the secondary adjustment of train load electric current, make electricity
Load current needed for power locomotive is transferred to contact net supply arm B by neutral section.
According to such scheme, described dq current decoupling control method adopts traditional dq current decoupled control or prediction dq electricity
Stream uneoupled control.
According to such scheme, described is not power-off phase splitting system based on cascade connection multi-level ground surface over-current split-phase system.
According to such scheme, current switching speed between supply arm and neutral section is by the speed of service of train, supply arm
Length in parallel with neutral section together decides on.
Compared with prior art, the invention has the beneficial effects as follows：By dq electric current is adopted to the current transformer in corresponding system
Uneoupled control, realizes the controlled switching in traction power supply arm and neutral section for the load current needed for electric locomotive, thus realizing train
Band carries shock-free logical phase splitting, the transient process thoroughly avoiding traditional phase splitting mode to exist, and improves the suitable of device
Ying Xing.
Brief description
Fig. 1 is the fundamental diagram of traditional ground phase splitting device.
Fig. 2 is a kind of improved ground surface over-current neutral section fundamental diagram.
Fig. 3 is cascade connection multi-level ground surface over-current split-phase system construction drawing of the present invention.
Fig. 4 is the adjustment schematic diagram of the d shaft current of the current switching control schematic diagram of the present invention.
Fig. 5 is that the adjustment schematic diagram of the q shaft current of the current switching control schematic diagram of the present invention (is carried from traction with train band
Supply arm A runs to traction power supply arm B, train power is as a example traction power supply arm A switches to the process of neutral section).
Fig. 6 is a kind of control figure of dq Current Decoupling that the present invention adopts.
Specific embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.The system be provided with for
Determine locomotive position sensor CG1, CG2, CG3, CG4 of locomotive position, in contact net supply arm A, contact net supply arm B and mistake
It is provided between electric neutral section measuring the contact net voltage-phase detection module PTA of contact net voltage-phase and contact net electricity
Pressure phase detecting module PTB, is provided with electric locomotive load current real time receiving apparatus.The ground surface over-current split-phase of cascade connection multi-level
Device constitute system as shown in figure 3, current switching control schematic diagram of the present invention as shown in Figure 4, Figure 5, its specific implementation process
As follows：
1st, train is when CG1 runs to CG4
1) when not reaching CG1, in given correspondence system, the reference d shaft current of current transformer, q shaft current give and are train
Zero, neutral section voltage is consistent with the output voltage of supply arm A, when pantograph is simultaneously in parallel with neutral section and traction power supply arm A,
Realize neutral section and the no impact of traction power supply arm is in parallel.
2) electric locomotive (or electric EMU) is when reaching CG1, block of bow collector of electric locomotive contact simultaneously traction power supply arm A with
Neutral section lead, ground surface over-current split-phase system receives the real time load electric current of electric locomotive and is set as current transformer in correspondence system
Reference d shaft current and with reference to q shaft current, its given value of current all rises according to given slope, so that neutral section voltage
Amplitude and phase place changes so that load current needed for electric locomotive is transferred to neutral section from traction power supply arm A；When train is subject to
When the wire of pantograph and traction power supply arm A departs from, realize no flow separation.
3) when electric locomotive runs on neutral section, according to patent CN201410036720.3 or CN201510133802.4
Method carries out the adjustment of adjacent two bridge arm voltage phase-amplitudes, after the completion of adjustment, the electricity of the voltage of neutral section and traction power supply arm B
Pressure is completely the same, so when train pantograph is contacted with traction power supply arm B and neutral section simultaneously, neutral section and supply arm B it
Between there is not circulation.
4), after electric locomotive (or electric EMU) remains running in arrival CG3, block of bow collector of electric locomotive contacts traction simultaneously
Supply arm B and neutral section, set the reference d shaft current of current transformer in correspondence system and reference q shaft current as zero, its given value of current
All decline according to given slope, so that the amplitude of neutral section voltage and phase place change so that bearing needed for electric locomotive
Carry electric current and be transferred to traction power supply arm B from neutral section, train pantograph departs from realization no flow point during neutral section and breaks.
2nd, train is when CG4 runs to CG1
1) when not reaching CG4, in given correspondence system, the reference d shaft current of current transformer gives and is zero train, neutrality
Section voltage is consistent with the output voltage of supply arm B, when pantograph is simultaneously in parallel with neutral section and traction power supply arm B, in realization
Property section and traction power supply arm no impact in parallel.
2) electric locomotive (or electric EMU) is when reaching CG4, block of bow collector of electric locomotive contact simultaneously traction power supply arm B with
Neutral section lead, ground surface over-current split-phase system receives the real time load electric current of electric locomotive and is set as current transformer in correspondence system
Reference d shaft current and with reference to q shaft current, its given value of current all rises according to given slope, so that neutral section voltage
Amplitude and phase place changes so that load current needed for electric locomotive is transferred to neutral section from traction power supply arm B；When train is subject to
When the wire of pantograph and traction power supply arm A departs from, realize no flow separation.
3) when electric locomotive runs on neutral section, according to patent CN201410036720.3 or CN201510133802.4
Method carries out the adjustment of adjacent two bridge arm voltage phase-amplitudes, after the completion of adjustment, the electricity of the voltage of neutral section and traction power supply arm A
Pressure is completely the same, so when train pantograph is contacted with traction power supply arm A and neutral section simultaneously, neutral section and supply arm A it
Between there is not circulation.
4), after electric locomotive (or electric EMU) remains running in arrival CG2, block of bow collector of electric locomotive contacts traction simultaneously
Supply arm A and neutral section, set the reference d shaft current of current transformer in correspondence system and reference q shaft current as zero, its given value of current
All decline according to given slope, so that the amplitude of neutral section voltage and phase place change so that bearing needed for electric locomotive
Carry electric current and be transferred to traction power supply arm A from neutral section, train pantograph departs from realization no flow point during neutral section and breaks.
Dq current decoupled control is adopted by current transformer in correspondence system, can be achieved with train band and carry during logical phase splitting
Train load controlled current flow switches, thus avoiding corresponding transient process.
The current switching speed based on current transformer in the ground surface over-current split-phase system of cascade connection multi-level current transformer for the determination is first
It needs to be determined that following parameter：
1) length L of phase-separating section neutrality section and supply arm parallel connection part, unit m are determined；
2) speed v of logical phase splitting train, unit m/s are determined；
3) determine the maximum current Imax needed for train.
After above-mentioned parameter determines, you can determine the time t that pantograph is contacted simultaneously with contact net and neutral section,
T=L/v (1)
Obtaining current switching time is kt, then speed Sc of power switching is
Sc=Imax/kt (2)
In formula, k is current switching time coefficient, k ∈ (0,1).
The present invention passes through to design a kind of current switching control method based on cascade connection multi-level ground surface over-current split-phase system, leads to
Cross to corresponding current transformer output voltage amplitude and phase controlling, electric locomotive (or EMUs) run contact net supply arm with
When property section, pantograph are contacted with the two simultaneously, realize bearing power needed for electric locomotive between neutral section and traction power supply arm
Controlled switching, reach the no electrically separated of pantograph and target wire and no impact closure it is achieved that electric locomotive (motor-car
Group) the logical phase splitting of band load no impact, to contact net and all no any impact of electric locomotive (or EMUs), and can reduce
Requirement to switching device.
Claims (4)
1. a kind of current switching control method based on cascade connection multi-level ground surface over-current split-phase system it is characterised in that include with
Lower step：
Step 1：In the ground surface over-current split-phase system being built using cascade connection multi-level ground surface over-current neutral section, have for determining machine
The primary importance sensor CG1 of truck position, second place sensor CG2, the 3rd position sensor CG3, the 4th position sensor
CG4；
Have for measuring contact net voltage-phase between contact net supply arm A, contact net supply arm B and phase splitting device
Contact net voltage-phase detection module PTA and contact net voltage-phase detection module PTB；
Electric locomotive has train load electric current real time emission device, and ground surface over-current split-phase system has corresponding train load electricity
Stream real time receiving apparatus；
Step 2：When electric locomotive travels to primary importance sensor CG1 position, primary importance sensor CG1 signal enabling, enters
The once adjustment of ranks car load current, train real time load current emission device sends train load current signal；
Step 3：After ground surface over-current split-phase system train load electric current real time receiving apparatus receive, using dq current decoupled control side
Method controls output current of converter in ground surface over-current split-phase system, makes load current needed for electric locomotive by contact net supply arm A
It is transferred to neutral section；
Step 4：When train proceeds to the 3rd position sensor CG3, carry out the secondary adjustment of train load electric current, make electric power machine
Load current needed for car is transferred to contact net supply arm B by neutral section.
2. the current switching control method based on cascade connection multi-level ground surface over-current split-phase system as claimed in claim 1, it is special
Levy and be, described dq current decoupling control method adopts traditional dq current decoupled control or prediction dq current decoupled control.
3. the current switching control method based on cascade connection multi-level ground surface over-current split-phase system as claimed in claim 1, it is special
Levy and be, described is not power-off phase splitting system based on cascade connection multi-level ground surface over-current split-phase system.
4. the current switching based on cascade connection multi-level ground surface over-current split-phase system as described in any one of claims 1 to 3 controls
Method it is characterised in that current switching speed between supply arm and neutral section by the speed of service of train, supply arm with neutral
Duan Binglian length together decides on.
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| CN201610890444.6A CN106379201A (en) | 2016-10-12 | 2016-10-12 | Current switching control method based on cascaded multilevel over-electric phase break system |
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| CN201610890444.6A CN106379201A (en) | 2016-10-12 | 2016-10-12 | Current switching control method based on cascaded multilevel over-electric phase break system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108621866A (en) * | 2018-05-11 | 2018-10-09 | 西南交通大学 | A kind of cascade connection multi-level ground surface over-current neutral section based on battery energy storage |
| CN108790956A (en) * | 2018-05-29 | 2018-11-13 | 中国铁道科学研究院集团有限公司 | A kind of double-current system train crosses phase-separating section period control method |
| CN109033627A (en) * | 2018-07-25 | 2018-12-18 | 西南交通大学 | A kind of train crosses split-phase vehicle-net-bridge coupling model construction method |
| CN109839879A (en) * | 2019-03-07 | 2019-06-04 | 西南交通大学 | Digital simulation device and its analogy method, host computer-LKJ device, LKJ simulation system |
| CN110091760A (en) * | 2018-01-31 | 2019-08-06 | 株洲中车时代电气股份有限公司 | A kind of excessive phase current control method and device in flexibility ground |
| CN110091766A (en) * | 2018-01-31 | 2019-08-06 | 株洲中车时代电气股份有限公司 | A kind of intelligent ground automatic passing over of neutral section method and device |
| CN111319517A (en) * | 2020-03-04 | 2020-06-23 | 西南交通大学 | Train pantograph position detection method in virtual in-phase power supply system |
| CN111907382A (en) * | 2019-05-09 | 2020-11-10 | 株洲中车时代电气股份有限公司 | Power supply system for supplying power to long stator of long stator linear motor and step changing method |
| CN112550087A (en) * | 2019-09-26 | 2021-03-26 | 株洲中车时代电气股份有限公司 | Switching method, passing phase separation method, switching device and passing phase separation device for train passing phase separation switch assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102555840A (en) * | 2012-03-05 | 2012-07-11 | 西南交通大学 | Coasting over-voltage split-phase pulse blocking and pulse unblocking method for alternating-current transmission system |
| CN103818271A (en) * | 2014-01-26 | 2014-05-28 | 西南交通大学 | Cascaded multi-level-based ground overvoltage phase splitting device |
| CN105539208A (en) * | 2016-01-25 | 2016-05-04 | 西南交通大学 | Power control method based on cascaded multilevel ground overvoltage phase splitting system |
| CN105799553A (en) * | 2016-04-22 | 2016-07-27 | 中国船舶重工集团公司第七〇二研究所 | Electronic ground automatic neutral section passing device |
| CN105922894A (en) * | 2016-04-22 | 2016-09-07 | 中国船舶重工集团公司第七〇二研究所 | Passing neutral section system based on high-power converter device, and control method thereof |
-
2016
- 2016-10-12 CN CN201610890444.6A patent/CN106379201A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102555840A (en) * | 2012-03-05 | 2012-07-11 | 西南交通大学 | Coasting over-voltage split-phase pulse blocking and pulse unblocking method for alternating-current transmission system |
| CN103818271A (en) * | 2014-01-26 | 2014-05-28 | 西南交通大学 | Cascaded multi-level-based ground overvoltage phase splitting device |
| CN105539208A (en) * | 2016-01-25 | 2016-05-04 | 西南交通大学 | Power control method based on cascaded multilevel ground overvoltage phase splitting system |
| CN105799553A (en) * | 2016-04-22 | 2016-07-27 | 中国船舶重工集团公司第七〇二研究所 | Electronic ground automatic neutral section passing device |
| CN105922894A (en) * | 2016-04-22 | 2016-09-07 | 中国船舶重工集团公司第七〇二研究所 | Passing neutral section system based on high-power converter device, and control method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 张杰等: "一种动车组网侧变流器的动态性能", 《电工技术学报》 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110091760A (en) * | 2018-01-31 | 2019-08-06 | 株洲中车时代电气股份有限公司 | A kind of excessive phase current control method and device in flexibility ground |
| CN110091766A (en) * | 2018-01-31 | 2019-08-06 | 株洲中车时代电气股份有限公司 | A kind of intelligent ground automatic passing over of neutral section method and device |
| CN108621866A (en) * | 2018-05-11 | 2018-10-09 | 西南交通大学 | A kind of cascade connection multi-level ground surface over-current neutral section based on battery energy storage |
| CN108790956A (en) * | 2018-05-29 | 2018-11-13 | 中国铁道科学研究院集团有限公司 | A kind of double-current system train crosses phase-separating section period control method |
| CN109033627B (en) * | 2018-07-25 | 2022-09-09 | 西南交通大学 | Train passing split-phase train-network-bridge coupling model construction method |
| CN109033627A (en) * | 2018-07-25 | 2018-12-18 | 西南交通大学 | A kind of train crosses split-phase vehicle-net-bridge coupling model construction method |
| CN109839879A (en) * | 2019-03-07 | 2019-06-04 | 西南交通大学 | Digital simulation device and its analogy method, host computer-LKJ device, LKJ simulation system |
| CN109839879B (en) * | 2019-03-07 | 2023-09-08 | 西南交通大学 | Data simulation device and simulation method thereof, upper computer-LKJ device and LKJ simulation system |
| CN111907382A (en) * | 2019-05-09 | 2020-11-10 | 株洲中车时代电气股份有限公司 | Power supply system for supplying power to long stator of long stator linear motor and step changing method |
| CN112550087A (en) * | 2019-09-26 | 2021-03-26 | 株洲中车时代电气股份有限公司 | Switching method, passing phase separation method, switching device and passing phase separation device for train passing phase separation switch assembly |
| CN112550087B (en) * | 2019-09-26 | 2022-08-02 | 株洲中车时代电气股份有限公司 | Switching method, passing phase separation method, switching device and passing phase separation device for train passing phase separation switch assembly |
| CN111319517A (en) * | 2020-03-04 | 2020-06-23 | 西南交通大学 | Train pantograph position detection method in virtual in-phase power supply system |
| CN111319517B (en) * | 2020-03-04 | 2022-05-10 | 西南交通大学 | Method for detecting position of train pantograph in virtual in-phase power supply system |
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