CN109532963A - A kind of the economy power matching and distribution method of power train - Google Patents
A kind of the economy power matching and distribution method of power train Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Abstract
The invention discloses the economy power matchings and distribution method of a kind of power train, including S1, acquisition area's train information, line information and object run curve to be calculated；S2, according to the train information, line information and object run curve, calculate and obtain demand power percentage curve of the train based on object run curve motion when；S3, according to train minimum power unit sum and demand power percentage curve, form minimum power unit number and train operation position curve, and according to the minimum power unit number and train operation position curve, the working condition of each power unit is allocated, the instruction sequence of power unit investment or excision is obtained；S4, the power unit that power unit is devoted oneself to work everywhere in object run curve is calculated, calculates the actual stage bit instruction sequence for obtaining each power unit；The actual stage bit instruction sequence of S5, the instruction sequence of the output power unit investment or excision and each power unit.
Description
Technical field
The invention belongs to the technical fields of Train Detection and Identification, and in particular to a kind of economy power matching of power train
With distribution method.
Background technique
China railways progress into operation maintenance period from great development period, how effectively to improve energy utilization rate
One of main target as Chinese Railway parent company and each Railway Bureau.Effective energy-saving and emission-reduction can not only reduce railway system
The operation cost of system can also effectively support national requirements for environmental protection, to effectively improve the economic benefit and social image of enterprise.
Traditional research is mostly from the angle of railroad embankment and Train Operation for Saving Energy, such as in order to reduce Train delay and increasing
Ledger line road vehicles capacity, research route map of train and optimization timetable；Or to reduce train traction energy consumption, make full use of train
The slack time of section operation, High-speed Train energy saving in running optimized handling control strategy.These researchs all ignore train
The influence of self-characteristic, especially system effectiveness to energy consuming process.
Train traction transmission system efficiency is that multiple subsystems are coefficient as a result, whole including tractive transformer, 4 quadrants
Flow device, intermediate dc support circuit, inverter, traction electric machine, speed-changing gear box etc..Vehicle efficiency depends on scene substantially at present
Train experiment obtains.The research of early stage and train experiment can all be related to train efficiency, but usually often using efficiency as one
Number, to have lost it with the characteristic of speed and load variation.Therefore subsequent efficiency optimization not being occurred yet and utilizing etc. grind
Study carefully.
Since railway passenger and freight transportation has apparent periodical demand, so layout of roads and Car design can all expire as far as possible
Sufficient greatest requirements.But with the promotion of train performance, the optimization of line condition, train is usually in underloading in daily operation
Or low load conditions, traction drive work at this time is in low-power area, and more inefficient becomes when motor low power run
Very important factor.
Summary of the invention
It is an object of the invention to be directed to above-mentioned deficiency in the prior art, a kind of economy power of power train is provided
Matching and distribution method, it is above-mentioned to solve the problems, such as or improve.
In order to achieve the above objectives, the technical solution adopted by the present invention is that:
A kind of the economy power matching and distribution method of power train, comprising:
S1, area's train information, line information and object run curve to be calculated are obtained；
S2, according to the train information, line information and object run curve, calculate and obtain train be based on object run
Demand power percentage curve when curve motion；
S3, according to train minimum power unit sum and demand power percentage curve, form minimum power unit number
With train operation position curve, and according to minimum power unit number and train operation position curve, to each power unit
Working condition is allocated, and obtains the instruction sequence of power unit investment or excision；
S4, the power unit that power unit is devoted oneself to work everywhere in object run curve is calculated, calculates and obtains each power
The actual stage bit instruction sequence of unit；
The actual stage bit instruction sequence of S5, the instruction sequence of output power unit investment or excision and each power unit
Column.
Preferably, the train information in step S1 include: train traction characteristic curve, basic running resistance characteristic curve,
The sum of power unit can be thrown or be cut off to train static state gross weight, overall length of the train, train minimum；
Line information includes: ramp data, curve data, electric split-phase data；
Object run curve be train manual drive when reference operation curve or automatic Pilot when modeling curve.
Preferably, the method for demand power percentage curve in step S2 is calculated are as follows:
S2.1, it is calculated in object run curve between each running position and corresponding the next position according to object run curve
Train momentum knots modification, train output force value needed for calculating meets train momentum knots modification and forms train output force value
With train operation position curve；
S2.2, according to line condition and train vehicle commander, calculate the base in object run curve on each running position of train
This running resistance and route additional drag, and form the curve of train resistance Yu train operation position；
S2.3, the demand output force value of each position of train is distinguished into phase with the additional drag value in corresponding same position
Add, and object run curve demand power everywhere is calculated according to the target velocity on object run curve, and form train demand
The curve of power and train operation position, demand power calculation formula are as follows:
Pneed(s)=(Fkinetic(s)+Fres(s))·Vtarget(s)
Wherein, PneedIt (s) is demand power kW, FkineticIt (s) is tractive force kN, F needed for the train momentum variableres
It (s) is train running resistance kN, VtargetIt (s) is target velocity km/h；
S2.4, according to object run curve, calculate in object run curve on each position train in curve of traction characteristics
The maximum output power played in constraint, and the maximum exportable power curve of object run curve is calculated according to target velocity:
Pmax(s)=Fout(s)·Vtarget(s)
Wherein, PmaxIt (s) is maximum exportable power kW, FoutIt (s) is maximum output power kN；
S2.5 power curve and maximum exportable power curve according to demand calculate the need of object run curve train everywhere
Seek power percentage:
Wherein, η (s) is demand power percentage.
Preferably, the method for power unit investment or the instruction sequence of excision in step S3 is obtained are as follows:
S3.1 calculates each position in object run curve according to minimum power unit sum and demand power percentage curve
The minimum integer number for meeting the train dynamics unit of power percentage demand is set, and forms minimum power unit number and column
The curve of vehicle running position；
S3.2 prevent to minimum power unit number curve the processing of frequent switching, if number frequency occurs in curve somewhere
Numerous fluctuation or of short duration switching, then number presses the maximum value value of fluctuation range, obtains power unit demand number curve；
S3.3 divides the working condition of each power unit according to the quantity in power unit demand number curve
Match, and the cumulative activation load of each power unit is close by cumulative operation time between working cell, and is each power unit
Investment or the instruction sequence of excision；
Preferably, the frequent switching of curve in step S3.2 is defined as: the retention time of some quantity is less than minimum single
Actuation time needed for member investment or excision.
Preferably, power unit involved in calculating refers to the power list for needing to devote oneself to work everywhere in object run curve
Member calculates and obtains grade bit instruction:
Wherein, Lvl (s) is grade bit instruction, and n is full vehicle total output unit number, nactiv(s) work has been put into be current
Power unit number, LvlmaxFor the maximum level bit instruction of train.
Preferably, grade bit instruction includes traction level, electric braking level and coasting level.
The economy power matching and distribution method of power train provided by the invention, have the advantages that
Existing train traction transmission system control logic only carries out simple mean allocation to train demand pull power, thus
Train system in underloading or low load is caused to work in inefficient state.
The present invention proposes a kind of power matching and distribution method for the low load of train and light running, and train can be improved
Traction drive efficiency in low load and at light load, to reduce the non-traction energy consuming part of train operation.
This method can be used as automatic Pilot in existing vehicle, auxiliary drives, the compensatory algorithm of manipulation schematic diagram, new
Vehicle can integrate in developing into central control unit (CCU), form intelligent power distribution module.
Detailed description of the invention
Fig. 1 is the economy power matching of power train and the main flow chart of distribution method.
Fig. 2 is that the economy power matching of power train prevents the flow chart of frequent switching with distribution method.
Fig. 3 is the process of the economy power matching of power train and the distribution method of distribution method consideration workload
Figure.
Specific embodiment
A specific embodiment of the invention is described below, in order to facilitate understanding by those skilled in the art this hair
It is bright, it should be apparent that the present invention is not limited to the ranges of specific embodiment, for those skilled in the art,
As long as various change is in the spirit and scope of the present invention that the attached claims limit and determine, these variations are aobvious and easy
See, all are using the innovation and creation of present inventive concept in the column of protection.
According to one embodiment of the application, the economy power matching and distribution method of the power train of this programme, ginseng
Examine Fig. 1, comprising:
S1, area's train information, line information and object run curve to be calculated are obtained；
S2, according to the train information, line information and object run curve, calculate and obtain train be based on object run
Demand power percentage curve when curve motion；
S3, according to train minimum power unit sum and demand power percentage curve, form minimum power unit number
With train operation position curve, and according to minimum power unit number and train operation position curve, to each power unit
Working condition is allocated, and obtains the instruction sequence of power unit investment or excision；
S4, the power unit that power unit is devoted oneself to work everywhere in object run curve is calculated, calculates and obtains each power
The actual stage bit instruction sequence of unit；
The actual stage bit instruction sequence of S5, the instruction sequence of output power unit investment or excision and each power unit
Column.
Above-mentioned steps are described in detail below
Step S1, optimize in sector data, train information includes: train traction characteristic curve (velocity-force), basic operation
Resistance curve (Unit basic resistance-speed), train static state gross weight, overall length of the train, train minimum can be thrown/cut off power list
The sum of member；
Line information include: ramp data (start-stop point kilometer post and route ramp), curve data (start-stop point kilometer post and
Sweep), electric split-phase data (start-stop point kilometer post)；
Object run curve is the curve of a speed and position, refers in particular to reference operation curve of the train in manual drive
Modeling curve when (manipulation schematic diagram) or automatic Pilot.
Step S2, the middle method for calculating demand power percentage curve are as follows:
S2.1, it is calculated in object run curve between each running position and corresponding the next position according to object run curve
Train momentum knots modification, train output force value needed for calculating meets train momentum knots modification and forms train output force value
With train operation position curve；
S2.2, according to line condition and train vehicle commander, calculate the base in object run curve on each running position of train
This running resistance and route additional drag, and form the curve of train resistance Yu train operation position；
S2.3, the demand output force value of each position of train is distinguished into phase with the additional drag value in corresponding same position
Add, and object run curve demand power everywhere is calculated according to the target velocity on object run curve, and form train demand
The curve of power and train operation position, demand power calculation formula are as follows:
Pneed(s)=(Fkinetic(s)+Fres(s))·Vtarget(s)
Wherein, PneedIt (s) is demand power kW, FkineticIt (s) is tractive force kN, F needed for the train momentum variableres
It (s) is train running resistance (additional drag containing route) kN, VtargetIt (s) is target velocity km/h；
S2.4, according to object run curve, calculate in object run curve on each position train in curve of traction characteristics
The maximum output power played in constraint, and the maximum exportable power curve of object run curve is calculated according to target velocity:
Pmax(s)=Fout(s)·Vtarget(s)
Wherein, PmaxIt (s) is maximum exportable power, FoutIt (s) is maximum output power kN；
S2.5 power curve and maximum exportable power curve according to demand calculate the need of object run curve train everywhere
Seek power percentage:
Wherein, η (s) is demand power percentage.
Step S3, power percentage curve, the minimum power unit constraint that consideration can put into/cut off calculate according to demand
In object run curve train dynamics unit demand number everywhere；Consider the equilibrium assignment working time, calculates object run curve
The power unit number (or ID) for needing to put into everywhere, and obtain power unit investment/excision instruction sequence.
S3.1 calculates each position in object run curve according to minimum power unit sum and demand power percentage curve
The minimum integer number (rounding mode is to round up) for meeting the train dynamics unit of power percentage demand is set, and is formed
The curve of minimum power unit number and train operation position.
Such as current power demand 52%, 8 power units are shared, then each power unit can provide 12.5% power
Demand, minimum power unit number is 5 at this time.
With reference to Fig. 2, S3.2 prevent to minimum power unit number curve the processing of frequent switching, if curve somewhere goes out
Existing number frequent fluctuation or of short duration switching, then number presses the maximum value value of fluctuation range, and it is bent to obtain power unit demand number
Line；
Wherein, the definition of the frequent switching of curve is less than minimum unit investment for the retention time of some quantity or cuts off institute
The actuation time needed.
With reference to Fig. 3, S3.3 is according to the quantity in power unit demand number curve, to the working condition of each power unit
It is allocated, and the cumulative activation load of each power unit is close by cumulative operation time between working cell, and is each dynamic
Power unit investment or the instruction sequence of excision；
Step S4 calculates related power unit and refers to the power list for needing to devote oneself to work everywhere in object run curve
Member calculates and obtains grade bit instruction, and grade bit instruction includes traction level, electric braking level and coasting level, its calculation formula is:
Wherein, Lvl (s) is grade bit instruction (numerical value), and n is full vehicle total output unit number, nactivIt (s) is currently to have thrown
Enter the power unit number of work, LvlmaxFor the maximum level bit instruction (numerical value) of train.
The present invention proposes a kind of power matching and distribution method for the low load of train and light running, and train can be improved
Traction drive efficiency in low load and at light load, to reduce the non-traction energy consuming part of train operation.Except this, this method
Can be used as automatic Pilot in existing vehicle, auxiliary drives, the compensatory algorithm of manipulation schematic diagram, can be in new model development
It is integrated into central control unit (CCU), forms intelligent power distribution module
Although being described in detail in conjunction with specific embodiment of the attached drawing to invention, should not be construed as to this patent
Protection scope restriction.In range described by claims, those skilled in the art are without creative work
The various modifications and deformation made still belong to the protection scope of this patent.
Claims (7)
1. the economy power matching and distribution method of a kind of power train characterized by comprising
S1, area's train information, line information and object run curve to be calculated are obtained；
S2, according to the train information, line information and object run curve, calculate and obtain train be based on object run curve
Demand power percentage curve when operation；
S3, according to train minimum power unit sum and demand power percentage curve, form minimum power unit number and column
Vehicle running position curve, and according to the minimum power unit number and train operation position curve, to each power unit
Working condition is allocated, and obtains the instruction sequence of power unit investment or excision；
S4, the power unit that power unit is devoted oneself to work everywhere in object run curve is calculated, calculates and obtains each power unit
Actual stage bit instruction sequence；
The actual stage bit instruction sequence of S5, the instruction sequence of the output power unit investment or excision and each power unit
Column.
2. the economy power matching and distribution method of power train according to claim 1, which is characterized in that the step
Train information in rapid S1 includes: train traction characteristic curve, basic running resistance characteristic curve, train static state gross weight, train
The sum of power unit can be thrown or be cut off to overall length, train minimum；
Line information includes: ramp data, curve data, electric split-phase data；
Object run curve be train manual drive when reference operation curve or automatic Pilot when modeling curve.
3. the economy power matching and distribution method of power train according to claim 1, which is characterized in that calculate institute
The method for stating demand power percentage curve in step S2 are as follows:
S2.1, the column in object run curve between each running position and corresponding the next position are calculated according to object run curve
Vehicle kinetic energy knots modification, train output force value needed for calculating meets train momentum knots modification, and form train output force value and column
Vehicle running position curve；
S2.2, according to line condition and train vehicle commander, calculate the basic fortune in object run curve on each running position of train
Row resistance and route additional drag, and form the curve of train resistance Yu train operation position；
S2.3, the demand output force value of each position of train is separately summed with the additional drag value in corresponding same position, and
Calculate object run curve demand power everywhere according to the target velocity on object run curve, and formed train demand power with
The curve of train operation position, demand power calculation formula are as follows:
Pneed(s)=(Fkinetic(s)+Fres(s))·Vtarget(s)
Wherein, PneedIt (s) is demand power kW, FkineticIt (s) is tractive force kN, F needed for the train momentum variableres(s) it is
Train running resistance kN, VtargetIt (s) is target velocity km/h；
S2.4, according to object run curve, calculate in object run curve that train is constrained in curve of traction characteristics on each position
The maximum output power of interior performance, and the maximum exportable power curve of object run curve is calculated according to target velocity:
Pmax(s)=Fout(s)·Vtarget(s)
Wherein, PmaxIt (s) is maximum exportable power kW, FoutIt (s) is maximum output power kN；
S2.5 power curve and maximum exportable power curve according to demand calculate the demand function of object run curve train everywhere
Rate percentage:
Wherein, η (s) is demand power percentage.
4. the economy power matching and distribution method of power train according to claim 1, which is characterized in that walked
The method of power unit investment or the instruction sequence of excision in rapid S3 are as follows:
S3.1 is calculated in object run curve on each position according to minimum power unit sum and demand power percentage curve
Meet the minimum integer number of the train dynamics unit of power percentage demand, and forms minimum power unit number and train fortune
The curve that line position is set；
S3.2 prevent to minimum power unit number curve the processing of frequent switching, if the frequent wave of number occurs in curve somewhere
Dynamic or of short duration switching, then number presses the maximum value value of fluctuation range, obtains power unit demand number curve；
S3.3 is allocated the working condition of each power unit according to the quantity in power unit demand number curve, and
The cumulative activation load of each power unit is close by cumulative operation time between working cell, and for each power unit investment or
The instruction sequence of excision.
5. the economy power matching and distribution method of power train according to claim 4, which is characterized in that the step
The frequent switching of curve in rapid S3.2 is defined as: the retention time of some quantity is less than needed for minimum unit puts into or cuts off
Actuation time.
6. the economy power matching and distribution method of power train according to claim 1, which is characterized in that calculate institute
The power unit being related to refers in the power unit that object run curve needs to devote oneself to work everywhere, calculates and obtains grade bit instruction:
Wherein, Lvl (s) is grade bit instruction, and n is full vehicle total output unit number, nactivIt (s) is that moving for work currently has been put into
Power unit number, LvlmaxFor the maximum level bit instruction of train.
7. the economy power matching and distribution method of power train according to claim 6, it is characterised in that: the grade
Bit instruction includes traction level, electric braking level and coasting level.
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| CN110126854A (en) * | 2019-04-25 | 2019-08-16 | 西南交通大学 | A kind of train energy consumption evaluation method based on GPS |
| CN110738369A (en) * | 2019-10-15 | 2020-01-31 | 西南交通大学 | Operation speed optimization method of urban rail transit trains |
| CN112109750A (en) * | 2020-09-30 | 2020-12-22 | 株洲中车时代电气股份有限公司 | Train traction force distribution method and device |
| CN112249043A (en) * | 2020-10-29 | 2021-01-22 | 株洲中车时代电气股份有限公司 | Train power distribution method and device |
| CN112722011A (en) * | 2019-10-29 | 2021-04-30 | 中车株洲电力机车研究所有限公司 | Automatic driving energy-saving control method and device for heavy-duty train |
| CN113561790A (en) * | 2020-04-28 | 2021-10-29 | 比亚迪股份有限公司 | Train power control method, device and system and controller |
| WO2024092907A1 (en) * | 2022-10-31 | 2024-05-10 | 中车长春轨道客车股份有限公司 | Power control method and apparatus |
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| CN110126854A (en) * | 2019-04-25 | 2019-08-16 | 西南交通大学 | A kind of train energy consumption evaluation method based on GPS |
| CN110738369A (en) * | 2019-10-15 | 2020-01-31 | 西南交通大学 | Operation speed optimization method of urban rail transit trains |
| CN112722011A (en) * | 2019-10-29 | 2021-04-30 | 中车株洲电力机车研究所有限公司 | Automatic driving energy-saving control method and device for heavy-duty train |
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| CN113561790B (en) * | 2020-04-28 | 2024-02-27 | 比亚迪股份有限公司 | Train power control method, device and system and controller |
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| WO2024092907A1 (en) * | 2022-10-31 | 2024-05-10 | 中车长春轨道客车股份有限公司 | Power control method and apparatus |
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| CN109532963B (en) | 2020-01-21 |
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