CN107776438A - The anti-loop process of urban track traffic traction power supply and system - Google Patents
The anti-loop process of urban track traffic traction power supply and system Download PDFInfo
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- CN107776438A CN107776438A CN201710857491.5A CN201710857491A CN107776438A CN 107776438 A CN107776438 A CN 107776438A CN 201710857491 A CN201710857491 A CN 201710857491A CN 107776438 A CN107776438 A CN 107776438A
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- rectification unit
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M7/00—Power lines or rails specially adapted for electrically-propelled vehicles of special types, e.g. suspension tramway, ropeway, underground railway
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J5/00—Circuit arrangements for transfer of electric power between ac networks and dc networks
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Abstract
The present invention provides a kind of anti-loop process of urban track traffic traction power supply and system.The method of the present embodiment is applied to urban track traffic tractive power supply system, and the system includes multiple traction substations, and each traction substation includes that device and diode rectification unit can be presented, and this method includes：Obtain the AC voltage of diode rectification unit and the DC side electric current of device can be presented；According to the parameter of diode rectification unit and the AC voltage of diode rectification unit, the floating voltage of diode rectification unit is determined；According to goal-selling voltage and the floating voltage of diode rectification unit, it is determined that the floating voltage of device can be presented；According to the DC side electric current that can present device, the equivalent internal resistance that device can be presented and the floating voltage that device can be presented, it is determined that the voltage set-point of device can be presented, circulation is produced to prevent from presenting between device and diode rectification unit.The present invention can avoid the generation of circulation, and can improve the stability of system.
Description
Technical field
The present invention relates to track traffic traction technique field, more particularly to a kind of anti-circulation of urban track traffic traction power supply
Method and system.
Background technology
With the continuous expansion of urban track traffic scale, urban rail is sent out in terms of urban traffic blocking and energy-saving and emission-reduction are alleviated
More and more important effect is waved, thus it is guaranteed that the safe and reliable operation of urban track traffic tractive power supply system seems more next
It is more important.
Urban track traffic tractive power supply system generally includes AC network, direct current contact net and multiple traction substations,
Each traction substation includes that device and diode rectification unit can be presented.Due to the straight of device and diode rectification unit can be presented
Stream side is connected, and for the AC of the two on same section of bus, can make it possible to feedback device and diode rectification unit can form one
Individual loop.
However, when existing system is by factors such as AC network fluctuations, the energy that is easily caused in each traction substation
The inversion cut-in voltage for presenting device is less than the floating voltage of diode rectification unit so that can present device and open inversion, diode
That can present circulation can will occur for Rectification Power Factor from open-minded between device and diode rectification unit.And the generation of circulation can
Distorted causing system power, by increasing capacitance it is possible to increase the extra loss of the system, and then have a strong impact on the overall performance of the system.
The content of the invention
The present invention provides a kind of anti-loop process of urban track traffic traction power supply and system, to solve existing city rail
The problem of traffic traction power supply system increases system additional energy due to the generation of circulation and reduces systematic function.
The present invention provides a kind of anti-loop process of urban track traffic traction power supply, draws and supplies applied to urban track traffic
Electric system, the urban track traffic tractive power supply system include multiple traction substations, and each traction substation includes presenting
Device and diode rectification unit, methods described include：
Obtain the AC voltage of the diode rectification unit and the DC side electric current that device can be presented；
According to the parameter of the diode rectification unit and the AC voltage of the diode rectification unit, it is determined that described
The floating voltage of diode rectification unit；
According to goal-selling voltage and the floating voltage of the diode rectification unit, the zero load that can present device is determined
Voltage；
According to the DC side electric current that can present device, the equivalent internal resistance that device can be presented and the sky that device can be presented
Carry voltage, determine the voltage set-point that can present device, with prevent it is described can present device and the diode rectification unit it
Between produce circulation.
Alternatively, the parameter of the diode rectification unit includes：The transformer voltage ratio of the diode rectification unit and
The transformer ratio of the diode rectification unit.
Alternatively, it is described electric according to the parameter of the diode rectification unit and the AC of the diode rectification unit
Pressure, the floating voltage of the diode rectification unit is determined, including：
The floating voltage of diode rectification unit is obtained by equation below (1)：
Udo=Uabc×k1×k2Formula (1)；
Wherein, UdoFor the floating voltage of the diode rectification unit, UabcFor the AC of the diode rectification unit
Voltage, k1For the transformer voltage ratio of the diode rectification unit, k2For the transformer ratio of the diode rectification unit.
Alternatively, it is described according to goal-selling voltage and the floating voltage of the diode rectification unit, determine the energy
The floating voltage of device is presented, including：
The floating voltage that device can be presented is obtained by equation below (2)：
U1k=Udo+ Δ U formula (2)；
Wherein, U1kFor the floating voltage that can present device, UdoFor the floating voltage of the diode rectification unit, Δ U
For the goal-selling voltage.
Alternatively, it is described according to the DC side electric current that can present device, the equivalent internal resistance that device can be presented and described
The floating voltage of device can be presented, determines the voltage set-point that can present device, including：
The voltage set-point that device can be presented is obtained by equation below (3)：
Uref=U1k-Rdp·IdcFormula (3)；
Wherein, UrefFor the voltage set-point that can present device, U1kFor the floating voltage that can present device, RdpFor institute
The equivalent internal resistance of device, I can be presented by statingdcFor the DC side electric current that can present device.
The present invention also provides a kind of urban track traffic tractive power supply system, and the system includes multiple traction substations,
Each traction substation includes that device and diode rectification unit can be presented, and the device that can present includes：Sensor and processor；
The sensor is used to obtain the AC voltage of the diode rectification unit and the direct current that can present device
Side electric current；
The processor is used for according to the parameter of the diode rectification unit and exchanging for the diode rectification unit
Side voltage, determine the floating voltage of the diode rectification unit；
The processor is additionally operable to the floating voltage according to goal-selling voltage and the diode rectification unit, determines institute
The floating voltage of device can be presented by stating；
The processor be additionally operable to according to the DC side electric current that can present device, the equivalent internal resistance that device can be presented and
The floating voltage that device can be presented, determine the voltage set-point that can present device, with prevent it is described can present device with it is described
Circulation is produced between diode rectification unit.
Alternatively, the parameter of the diode rectification unit includes：The transformer voltage ratio of the diode rectification unit and
The transformer ratio of the diode rectification unit.
Alternatively, the processor is specifically used for obtaining the floating voltage of diode rectification unit by equation below (1)：
Udo=Uabc×k1×k2Formula (1)；
Wherein, UdoFor the floating voltage of the diode rectification unit, UabcFor the AC of the diode rectification unit
Voltage, k1For the transformer voltage ratio of the diode rectification unit, k2For the transformer ratio of the diode rectification unit.
Alternatively, the processor is specifically used for obtaining the floating voltage that can present device by equation below (2)：
U1k=Udo+ Δ U formula (2)；
Wherein, U1kFor the floating voltage that can present device, UdoFor the floating voltage of the diode rectification unit, Δ U
For the goal-selling voltage.
Alternatively, the processor is specifically used for obtaining the voltage set-point that can present device by equation below (3)：
Uref=U1k-Rdp·IdcFormula (3)；
Wherein, UrefFor the voltage set-point that can present device, U1kFor the floating voltage that can present device, RdpFor institute
The equivalent internal resistance of device, I can be presented by statingdcFor the DC side electric current that can present device.
The anti-loop process of urban track traffic traction power supply provided by the invention and system, this method pass through according to diode
The parameter of Rectification Power Factor and the AC voltage of diode rectification unit, to determine the floating voltage of diode rectification unit.Connect
The floating voltage according to goal-selling voltage and diode rectification unit, it is determined that the size of the floating voltage of device can be presented.So
Afterwards, according to the DC side electric current that can present device, the equivalent internal resistance that device can be presented and the floating voltage that device can be presented, it is determined that dress can be presented
The voltage set-point put so that the high goal-selling electricity of floating voltage of the no-load voltage ratio diode rectification unit of device can be presented
Pressure, can prevent from presenting between device and diode rectification unit producing circulation.The present invention solves existing city rail and handed over
Logical tractive power supply system is caused system capability loss due to the generation of circulation, stablizes the problem of poor, and device can be presented by realizing
Floating voltage is higher than the floating voltage of diode rectification unit all the time, be automatically prevented from presenting device and diode rectification unit it
Between circulation generation, and implementation process is simply easy, time saving and energy saving, also improves the stability of system.
Brief description of the drawings
Fig. 1 is the schematic diagram of a scenario of the anti-loop process of urban track traffic traction power supply provided by the invention；
Fig. 2 is the external characteristic curve figure that device and diode rectification unit can be presented in the present invention；
Fig. 3 is the flow chart of the anti-loop process of urban track traffic traction power supply provided by the invention；
Fig. 4 is that the structural representation that device uses current decoupled control can be presented in the present invention；
Fig. 5 is the structural representation of urban track traffic tractive power supply system provided by the invention.
Embodiment
Fig. 1 is the schematic diagram of a scenario of the anti-loop process of urban track traffic traction power supply provided by the invention, and Fig. 2 is this hair
The bright middle external characteristic curve figure that can present device and diode rectification unit.Generally, urban track traffic tractive power supply system includes
AC network, direct current contact net and multiple traction substations, each traction substation include diode rectification unit and can presented
Device.As shown in figure 1, for convenience of description, the present embodiment is described in detail by taking a traction substation as an example.
Under normal circumstances, during train traction, in urban track traffic tractive power supply system in each traction substation
Diode rectification unit is worked, and alternating current is depressured and is converted into direct current, can be presented device and not worked, therefore only as in Fig. 2
The outer indicatrix of the diode rectification unit of commutating zone 2., wherein UdoFor the floating voltage of diode rectification unit；UlimFor energy
Device inverter voltage limits value is presented, is defaulted as 1750V；A is limited work(point, and AX is limited work(curve, rises along AX directions voltage, and work(
Rate keeps constant, and acquiescence limit work value is 2MW；UovFor DC voltage protection value, default value 2100V.During train braking, each lead
Device work can be presented by drawing in electric substation, and by contact net brake caused by DC conversion be alternating current and be sent to alternating current
Net, diode rectification unit do not work, thus only as Tu2Zhong inversions area the external characteristic curve that can present device 1., wherein U1kFor
The inversion cut-in voltage of device can be presented.Herein it should be noted that for convenience of explanation, device and diode can be presented in Fig. 2
The external characteristic curve of Rectification Power Factor is drawn in the left and right sides of ordinate respectively, is easy to distinguish different working conditions.In Fig. 2, indulge and sit
Mark UdcFor the DC voltage of device, abscissa I can be presenteddcFor the DC side electric current of device can be presented.So, power transformation is each drawn
In diode rectification unit and can present device can co-ordination, specific control targe can be reached.
Generally, in existing urban track traffic tractive power supply system, can present device has fixed inversion cut-in voltage, by
In the influence of the factors such as extraneous factor ac grid voltage fluctuation so that can present the inversion cut-in voltage of device can be less than diode
The floating voltage of Rectification Power Factor, device can be presented and open inversion, diode rectification unit is in rectification state, now can present device
Circulation will be produced between diode rectification unit.Therefore, in order to avoid the generation of circulation, control can be passed through in the present embodiment
The size of the voltage set-point of device can be presented so that the floating voltage (inversion cut-in voltage) that can present device is consistently greater than diode
The floating voltage of Rectification Power Factor, so as to prevent the generation of circulation, it is ensured that whole system can be stablized, reliable normal operation.
Fig. 3 is the flow chart of the anti-loop process of urban track traffic traction power supply provided by the invention, and Fig. 4 is in the present invention
The structural representation that device uses current decoupled control can be presented.The executive agent of the present embodiment can be the city rail shown in Fig. 1
Road traffic traction power supply system, as shown in figure 3, the anti-loop process of urban track traffic traction power supply of the present embodiment can wrap
Include：
S101, the AC voltage for obtaining diode rectification unit and the DC side electric current that device can be presented.
Specifically, the AC voltage of diode rectification unit and the DC side electric current of device can be presented with handing in the present embodiment
Stream side power network, direct current contact net voltage swing and be actually needed closely related, therefore, in the present embodiment can present device can root
Obtained according to the empirical value in practical application, the present embodiment is not limited this.
S102, according to the parameter of diode rectification unit and the AC voltage of diode rectification unit, determine diode
The floating voltage of Rectification Power Factor.
Specifically, in order to make it possible to present device floating voltage be more than diode rectification unit floating voltage, this implementation
Can present device in example needs first to obtain the floating voltage of diode rectification unit.Various ways can be used in the present embodiment according to two
The different type of pole pipe Rectification Power Factor determines its floating voltage, and the present embodiment do not limited this.
Further, the present embodiment specifically can obtain diode by the parameter and AC voltage of diode rectification unit
The floating voltage of Rectification Power Factor.Alternatively, the parameter of diode rectification unit includes：The transformer voltage ratio of diode rectification unit
With the transformer ratio of diode rectification unit.Wherein, the transformer voltage ratio of diode rectification unit and transformer ratio are diode
The intrinsic parameter of Rectification Power Factor, the value of the two are given value.The present embodiment can be presented can be according to diode rectification unit in device
Actual type carry out selecting the two, the present embodiment is not limited this.
Specifically, the present embodiment can present device can represent the floating voltage of diode rectification unit by equation below (1)：
Udo=Uabc×k1×k2Formula (1)；
Wherein, UdoFor the floating voltage of diode rectification unit, UabcFor the AC voltage of diode rectification unit, k1
For the transformer voltage ratio of diode rectification unit, k2For the transformer ratio of diode rectification unit.
Further, the AC voltage of diode rectification unit, transformer voltage ratio and transformer ratio are equal in the present embodiment
It can measure, given value can be seen as, therefore, the present embodiment can present device and be able to can solve to obtain diode by formula (1)
The floating voltage of Rectification Power Factor.
Further, because the core that can present device is pulse width adjustment (Pulse Width in the present embodiment
Modulation, PWM) rectifier, it will usually the current decoupled control based on synchronous rotating frame is used, using outer voltage
With the double-closed-loop control structure and space vector modulation of current inner loop (Space Vector Pulse Width Modulation,
SVPWM) algorithm, as shown in figure 4, wherein outer shroud is Voltage loop, inner ring is electric current loop.Wherein, UrefFor can present the voltage of device to
Definite value (Voltage loop set-point), and the voltage set-point U of device can be presentedrefWith floating voltage U1kBetween linear relationship be present, and drive
The controllable circuit that can be presented in device of moving pulse determines that the floating voltage U of device can be presented1kSize.
Further, in existing urban track traffic tractive power supply system, UrefFor definite value, and driving pulse can
The floating voltage that device can be presented caused by control is also just definite value, and therefore, existing system easily produces circulation.In order to avoid ring
The generation of stream, it is required that the floating voltage that can present device is more than the floating voltage of diode rectification unit, energy in the present embodiment
Feedback device can be adjusted by S103 detailed process to the size of its voltage set-point, realize the floating voltage that can present device
More than the floating voltage of diode rectification unit.
S103, according to goal-selling voltage and the floating voltage of the diode rectification unit, it is determined that the sky of device can be presented
Carry voltage.
Specifically, the present embodiment can present device and can represent that the floating voltage of device can be presented by equation below (2)：
U1k=Udo+ Δ U formula (2)；
Wherein, U1kFor the floating voltage of device, U can be presenteddoFor the floating voltage of diode rectification unit, Δ U is default mesh
Mark voltage.
Further, because the voltage set-point that can present device can control generation driving pulse, driving pulse can control
The circuit in device can be presented and produce the floating voltage that can present device, size of the voltage set-point to its floating voltage of device can be presented
Conclusive effect is played, therefore, the present embodiment can present device can make its floating voltage U by formula (2)1kCompare diode rectification
The floating voltage U of unitdoAmplitude it is big.Wherein, the big I of the amplitude of goal-selling voltage is set based on experience value, such as
30V, the present embodiment are not limited this.
Further, device can be presented to heighten by driving pulse caused by its voltage set-point due to device can be presented
Floating voltage, therefore, the present embodiment can perform S104 detailed process realize make it possible to present device floating voltage it is high all the time
In the floating voltage of diode rectification unit.
S104, according to the DC side electric current that can present device, the equivalent internal resistance that device can be presented and the floating voltage that device can be presented,
It is determined that the voltage set-point of device can be presented, circulation is produced to prevent from presenting between device and diode rectification unit.
Specifically, the present embodiment can present device and can represent that the voltage set-point of device can be presented by equation below (3)：
Uref=U1k-Rdp·IdcFormula (3)；
Wherein, UrefFor the voltage set-point of device, U can be presented1kFor the floating voltage of device, R can be presenteddpFor device can be presented
Equivalent internal resistance, IdcFor the DC side electric current of device can be presented.
Further, in formula (3), the equivalent internal resistance R of device can be presenteddpFor the external characteristic curve of device can be presented in Fig. 2
Slope equivalence value, and RdpWith the DC side electric current I that can present devicedcIt can be obtained by measurement, given value can be regarded as.
Therefore, when the big goal-selling voltage of the floating voltage of no-load voltage ratio diode rectification unit of device can be presented, obtained electricity
The amplitude of pressure set-point can become big, and modulating wave U is obtained by a series of regulation of PI controllers and Uncoupling Control BaseddAnd Uq, then with
Synchro angle caused by phaselocked loop link combines, and finally produces driving pulse so that caused driving pulsation can be according to formula (3)
Control generation floating voltage U1kThe floating voltage of diode rectification unit can be consistently higher than, additionally it is possible to prevent that device and two poles can be presented
Circulation is produced between pipe Rectification Power Factor.
Can present device for existing urban track traffic tractive power supply system, in the present embodiment can pass through control
Its floating voltage is consistently greater than the floating voltage of diode rectification unit, is automatically prevented from the generation of circulation, without manual operation, and
Device can be presented can be according to the size of its floating voltage of actual conditions adjust automatically, and practicality is big, and ensure that system can be just
Normal operation.
The anti-loop process of urban track traffic traction power supply that the present embodiment provides, by according to diode rectification unit
The AC voltage of parameter and diode rectification unit, to determine the floating voltage of diode rectification unit.Then according to default
The floating voltage of target voltage and diode rectification unit, it is determined that the size of the floating voltage of device can be presented.Then, according to can present
The DC side electric current of device, the equivalent internal resistance that device can be presented and the floating voltage that device can be presented, it is determined that can present the voltage of device to
Definite value so that the high goal-selling voltage of floating voltage of the no-load voltage ratio diode rectification unit of device can be presented, can be prevented
It can present and produce circulation between device and diode rectification unit.The present embodiment solves existing urban track traffic traction power supply
System is caused system capability loss due to the generation of circulation, stablizes the problem of poor, realizes the floating voltage beginning that can present device
It is higher than the floating voltage of diode rectification unit eventually, it has been automatically prevented from presenting the production of circulation between device and diode rectification unit
It is raw, and implementation process is simply easy, it is time saving and energy saving, also improve the stability of system.
Fig. 5 is the structural representation of urban track traffic tractive power supply system provided by the invention.As shown in figure 5, this reality
Applying urban track traffic tractive power supply system in example includes multiple traction substations, and it is whole that each traction substation includes diode
Flow unit 10 and device 20 can be presented, can present device 20 includes：Sensor 21 and processor 22；
The sensor 21 is used to obtain the AC voltage of the diode rectification unit and described can present the straight of device
Flow side electric current；
The processor 22 is used for according to the parameter of the diode rectification unit and the friendship of the diode rectification unit
Side voltage is flowed, determines the floating voltage of the diode rectification unit；
The processor 22 is additionally operable to the floating voltage according to goal-selling voltage and the diode rectification unit, it is determined that
The floating voltage that device can be presented；
The processor 22 is additionally operable to according to the DC side electric current that can present device, the equivalent internal resistance that can present device
With the floating voltage that can present device, the voltage set-point that can present device is determined, to prevent from described to present device and institute
State and produce circulation between diode rectification unit.
Alternatively, the parameter of the diode rectification unit includes：The transformer voltage ratio of the diode rectification unit and
The transformer ratio of the diode rectification unit.
Alternatively, the processor is specifically used for obtaining the floating voltage of diode rectification unit by equation below (1)：
Udo=Uabc×k1×k2Formula (1)；
Wherein, UdoFor the floating voltage of the diode rectification unit, UabcFor the AC of the diode rectification unit
Voltage, k1For the transformer voltage ratio of the diode rectification unit, k2For the transformer ratio of the diode rectification unit.
Alternatively, the processor is specifically used for obtaining the floating voltage that can present device by equation below (2)：
U1k=Udo+ Δ U formula (2)；
Wherein, U1kFor the floating voltage that can present device, UdoFor the floating voltage of the diode rectification unit, Δ U
For the goal-selling voltage.
Alternatively, the processor is specifically used for obtaining the voltage set-point that can present device by equation below (3)：
Uref=U1k-Rdp·IdcFormula (3)；
Wherein, UrefFor the voltage set-point that can present device, U1kFor the floating voltage that can present device, RdpFor institute
The equivalent internal resistance of device, I can be presented by statingdcFor the DC side electric current that can present device.
The urban track traffic tractive power supply system that the present embodiment provides, it can be used for performing the above-mentioned each method reality of the present invention
The technical scheme of example is applied, by the parameter according to diode rectification unit and the AC voltage of diode rectification unit, is come true
Determine the floating voltage of diode rectification unit.Then according to goal-selling voltage and the floating voltage of diode rectification unit, really
Surely present the size of the floating voltage of device.Then, according to the DC side electric current that can present device, the equivalent internal resistance that device can be presented and
The floating voltage of device can be presented, it is determined that the voltage set-point of device can be presented so that the no-load voltage ratio diode that can present device is whole
The high goal-selling voltage of floating voltage of unit is flowed, can prevent from presenting between device and diode rectification unit producing circulation.
The present embodiment solve existing urban track traffic tractive power supply system caused due to the generation of circulation system capability loss,
Stablize the problem of poor, realize can present device floating voltage it is higher than the floating voltage of diode rectification unit all the time, it is automatic anti-
The generation of circulation between device and diode rectification unit can be presented by having stopped, and implementation process is simply easy, time saving and energy saving, be also improved
The stability of system.
The present invention also provides a kind of readable storage medium storing program for executing, computer program is stored with readable storage medium storing program for executing, when city rail
During at least one computing device of road traffic traction power supply system computer program, arouse urban track traffic traction power supply
System performs the anti-loop process of urban track traffic traction power supply.
The present invention also provides a kind of program product, and the program product includes computer program, and the computer program is stored in
In readable storage medium storing program for executing.At least one processor of urban track traffic tractive power supply system can be read from readable storage medium storing program for executing
The computer program, at least one computing device computer program cause urban track traffic tractive power supply system to implement city
The anti-loop process of city's track traffic traction power supply.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above-mentioned each method embodiment can lead to
The related hardware of programmed instruction is crossed to complete.Foregoing program can be stored in a computer read/write memory medium.The journey
Sequence upon execution, execution the step of including above-mentioned each method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or
Person's CD etc. is various can be with the medium of store program codes.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of anti-loop process of urban track traffic traction power supply, it is characterised in that draw and supply applied to urban track traffic
Electric system, the urban track traffic tractive power supply system include multiple traction substations, and each traction substation includes presenting
Device and diode rectification unit, methods described include：
Obtain the AC voltage of the diode rectification unit and the DC side electric current that device can be presented；
According to the parameter of the diode rectification unit and the AC voltage of the diode rectification unit, two pole is determined
The floating voltage of pipe Rectification Power Factor；
According to goal-selling voltage and the floating voltage of the diode rectification unit, the zero load electricity that can present device is determined
Pressure；
According to the DC side electric current that can present device, the equivalent internal resistance that device can be presented and the zero load electricity that device can be presented
Pressure, determines the voltage set-point that can present device, to prevent described can present from being produced between device and the diode rectification unit
Raw circulation.
2. according to the method for claim 1, it is characterised in that the parameter of the diode rectification unit includes：Described two
The transformer ratio of the transformer voltage ratio of pole pipe Rectification Power Factor and the diode rectification unit.
3. according to the method for claim 2, it is characterised in that the parameter and institute according to the diode rectification unit
The AC voltage of diode rectification unit is stated, determines the floating voltage of the diode rectification unit, including：
The floating voltage of diode rectification unit is obtained by equation below (1)：
Udo=Uabc×k1×k2Formula (1)；
Wherein, UdoFor the floating voltage of the diode rectification unit, UabcFor the AC electricity of the diode rectification unit
Pressure, k1For the transformer voltage ratio of the diode rectification unit, k2For the transformer ratio of the diode rectification unit.
4. according to the method for claim 1, it is characterised in that described according to goal-selling voltage and the diode rectification
The floating voltage of unit, the floating voltage that can present device is determined, including：
The floating voltage that device can be presented is obtained by equation below (2)：
U1k=Udo+ Δ U formula (2)；
Wherein, U1kFor the floating voltage that can present device, UdoFor the floating voltage of the diode rectification unit, Δ U is institute
State goal-selling voltage.
5. according to the method for claim 1, it is characterised in that described according to the DC side electric current that can present device, institute
The equivalent internal resistance that can present device and the floating voltage that device can be presented are stated, determines the voltage set-point that can present device, is wrapped
Include：
The voltage set-point that device can be presented is obtained by equation below (3)：
Uref=U1k-Rdp·IdcFormula (3)；
Wherein, UrefFor the voltage set-point that can present device, U1kFor the floating voltage that can present device, RdpFor the energy
Present the equivalent internal resistance of device, IdcFor the DC side electric current that can present device.
6. a kind of urban track traffic tractive power supply system, it is characterised in that the system includes multiple traction substations, each
Traction substation includes that device and diode rectification unit can be presented, and the device that can present includes：Sensor and processor；
The sensor is used for the AC voltage for obtaining the diode rectification unit and the DC side electricity that can present device
Stream；
The processor is used for the AC electricity of the parameter and the diode rectification unit according to the diode rectification unit
Pressure, determine the floating voltage of the diode rectification unit；
The processor is additionally operable to the floating voltage according to goal-selling voltage and the diode rectification unit, determines the energy
Present the floating voltage of device；
The processor is additionally operable to according to the DC side electric current that can present device, the equivalent internal resistance that can present device and described
The floating voltage of device can be presented, determines the voltage set-point that can present device, to prevent from described to present device and two pole
Circulation is produced between pipe Rectification Power Factor.
7. system according to claim 6, it is characterised in that the parameter of the diode rectification unit includes：Described two
The transformer ratio of the transformer voltage ratio of pole pipe Rectification Power Factor and the diode rectification unit.
8. system according to claim 7, it is characterised in that the processor is specifically used for obtaining by equation below (1)
To the floating voltage of diode rectification unit：
Udo=Uabc×k1×k2Formula (1)；
Wherein, UdoFor the floating voltage of the diode rectification unit, UabcFor the AC electricity of the diode rectification unit
Pressure, k1For the transformer voltage ratio of the diode rectification unit, k2For the transformer ratio of the diode rectification unit.
9. system according to claim 6, it is characterised in that the processor is specifically used for obtaining by equation below (2)
To the floating voltage that can present device：
U1k=Udo+ Δ U formula (2)；
Wherein, U1kFor the floating voltage that can present device, UdoFor the floating voltage of the diode rectification unit, Δ U is institute
State goal-selling voltage.
10. system according to claim 6, it is characterised in that the processor is specifically used for obtaining by equation below (3)
To the voltage set-point that can present device：
Uref=U1k-Rdp·IdcFormula (3)；
Wherein, UrefFor the voltage set-point that can present device, U1kFor the floating voltage that can present device, RdpFor the energy
Present the equivalent internal resistance of device, IdcFor the DC side electric current that can present device.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108312898A (en) * | 2018-03-30 | 2018-07-24 | 北京千驷驭电气有限公司 | The dynamic model simulator of simcity rail traffic vehicles |
| CN112356740A (en) * | 2020-11-20 | 2021-02-12 | 西安许继电力电子技术有限公司 | Feedback control method and system based on PWM energy feedback converter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683983A (en) * | 2013-12-04 | 2014-03-26 | 南车株洲电力机车研究所有限公司 | Hybrid energy feedback type direct-current traction power supply device and control method |
| CN104340085A (en) * | 2014-10-28 | 2015-02-11 | 株洲时代装备技术有限责任公司 | Urban rail medium voltage energy feedback power supply method and device with ring current eliminating function |
| DE102015203843A1 (en) * | 2015-03-04 | 2016-09-08 | Siemens Aktiengesellschaft | Arrangement and method for a DC traction power supply |
| CN106169772A (en) * | 2016-08-05 | 2016-11-30 | 株洲中车时代电气股份有限公司 | A kind of energy feedback system based on floating gate threshold value starts control method and control system |
| CN106218447A (en) * | 2016-08-16 | 2016-12-14 | 深圳市禾望电气股份有限公司 | A kind of control method that can present type traction power set and system |
-
2017
- 2017-09-20 CN CN201710857491.5A patent/CN107776438B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683983A (en) * | 2013-12-04 | 2014-03-26 | 南车株洲电力机车研究所有限公司 | Hybrid energy feedback type direct-current traction power supply device and control method |
| CN104340085A (en) * | 2014-10-28 | 2015-02-11 | 株洲时代装备技术有限责任公司 | Urban rail medium voltage energy feedback power supply method and device with ring current eliminating function |
| DE102015203843A1 (en) * | 2015-03-04 | 2016-09-08 | Siemens Aktiengesellschaft | Arrangement and method for a DC traction power supply |
| CN106169772A (en) * | 2016-08-05 | 2016-11-30 | 株洲中车时代电气股份有限公司 | A kind of energy feedback system based on floating gate threshold value starts control method and control system |
| CN106218447A (en) * | 2016-08-16 | 2016-12-14 | 深圳市禾望电气股份有限公司 | A kind of control method that can present type traction power set and system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108312898A (en) * | 2018-03-30 | 2018-07-24 | 北京千驷驭电气有限公司 | The dynamic model simulator of simcity rail traffic vehicles |
| CN108312898B (en) * | 2018-03-30 | 2024-01-05 | 北京千驷驭电气有限公司 | Dynamic simulation device for simulating urban rail transit vehicle |
| CN112356740A (en) * | 2020-11-20 | 2021-02-12 | 西安许继电力电子技术有限公司 | Feedback control method and system based on PWM energy feedback converter |
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