CN109823236A - Train traction power supply unit, system and control method - Google Patents
Train traction power supply unit, system and control method Download PDFInfo
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- CN109823236A CN109823236A CN201910009026.5A CN201910009026A CN109823236A CN 109823236 A CN109823236 A CN 109823236A CN 201910009026 A CN201910009026 A CN 201910009026A CN 109823236 A CN109823236 A CN 109823236A
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Abstract
The present invention provides a kind of train traction power supply unit, system and control method, and wherein device includes: diode rectification unit, four-quadrant Current transform unit and central controller；Diode rectification unit, four-quadrant Current transform unit and central controller are connected in parallel AC network and direct current contact net, central controller connects four-quadrant Current transform unit, and central controller is used to adjust the output electric current of four-quadrant Current transform unit according to the voltage of the voltage of AC network, electric current and direct current contact net.Train traction power supply unit, system and control method provided by the invention enrich the function of train traction power supply system.
Description
Technical field
The present invention relates to urban track traffic traction power supply technical field more particularly to a kind of train traction power supply unit,
System and control method.
Background technique
Urban track traffic is due to becoming with the advantages such as safety and comfort, passenger capacity is big, the speed of service is fast, energy conservation and environmental protection
Solve the problems, such as the preferred option of the urban congestion got worse, therefore China mostly starts development construction city rail at present and hands over
It is logical.In some train traction power supply systems, by the way that the traction substation of multiple parallel connections is arranged, by the alternating current of medium voltage network side
It converts direct current and provides traction current for train.But since the energy of diode rectification unit in traction substation can only be unidirectional
Flowing, train regenerating braking energy can not feed back to medium voltage network recycling, cause the huge waste of energy.
In part of the train tractive power supply system in the prior art, pass through increase and diode rectification in traction substation
The four-quadrant Current transform unit of unit parallel connection, so that traction substation, in train traction, diode rectification unit and four-quadrant become
Stream unit works at the same time, and can be depressured alternating current and rectify and is converted into direct current, and to train offer direct current；In train system
When dynamic, the regenerating braking energy that four-quadrant Current transform unit generates train feeds back medium voltage network side, to improve train braking energy
Utilization efficiency.
Other than drawing with braking, the designer and operator of train traction power supply system, which also want to it, to be held
More control functions are carried on a shoulder pole, however train traction power supply system function in the prior art is but more single.
Summary of the invention
The present invention provides a kind of train traction power supply unit, system and control method, enriches train traction power supply system
Function.
The present invention provides a kind of train traction power supply unit, comprising: diode rectification unit, four-quadrant Current transform unit and in
Entreat controller；
The diode rectification unit, the four-quadrant Current transform unit and the central controller are connected in parallel AC network
With direct current contact net, the central controller connects the four-quadrant Current transform unit, and the central controller is used for according to
The voltage of the voltage of AC network, electric current and the direct current contact net adjusts the output electric current of the four-quadrant Current transform unit；
When the train traction power supply unit is in traction working condition, the diode rectification unit and the four-quadrant unsteady flow
The alternating current of the AC network is converted to direct current and exported to the direct current contact net by unit；
When the train traction power supply unit is in damped condition, the four-quadrant Current transform unit is by the direct current contact net
Direct current be converted to alternating current and exported to the AC network；
When the train traction power supply unit is in reactive compensation operating condition, the central controller is according to the AC network
Power factor controlling described in four-quadrant Current transform unit to the AC network carry out reactive compensation；
The central controller is also used to receive the inversion instruction comprising ice melting current value of ice-melt control device transmission, and
It is instructed according to the inversion and the train traction power supply unit is switched into inversion operating condition, so that the train traction power supply unit
Four-quadrant Current transform unit, direct current contact net to ice-melt section, the train traction power supply unit adjacent to ice-melt section
Diode rectification unit and described to form energy circulation between the corresponding AC network of ice-melt section, and the direct current contacts
The electric current to ice-melt section of net is not less than the ice melting current value.
In an embodiment of the present invention, what the central controller was also used to receive the transmission of ice-melt control device includes ice-melt
The rectification of current value instructs, and is instructed according to the rectification train traction power supply unit switching to rectification operating condition；
So that the four-quadrant Current transform unit of train traction power supply unit, direct current contact net in inversion operating condition to ice-melt
Section, train traction power supply unit in rectification operating condition diode rectification unit exchange with described to ice-melt section is corresponding
Energy circulation is formed between power grid, and the electric current to ice-melt section of the direct current contact net is not less than the ice melting current value.
In an embodiment of the present invention, when the train traction power supply unit is in reactive compensation operating condition, the center control
Implement body processed is used for, and referenced reactive current is generated by the reactive power of the Bulk Supply Substation point of incoming cables of the AC network, to institute
It states four-quadrant Current transform unit and sends the referenced reactive current, so that the four-quadrant Current transform unit carries out the AC network
Reactive compensation.
In an embodiment of the present invention, the central controller is to the idle of the Bulk Supply Substation point of incoming cables of the AC network
Power and active power independent control.
In an embodiment of the present invention, the diode rectification unit is 24 pulse wave diode rectification units, comprising: two
Rectifier transformer and four diode rectifier bridges.
In an embodiment of the present invention, the four-quadrant Current transform unit includes: two-winding transformer and four quadrant convertor.
One embodiment of the invention provides a kind of train traction power supply system, comprising: ice-melt control device and N number of as right is wanted
Seek the described in any item train traction power supply units of 1-6；
The central controller of N number of train traction power supply unit connects the ice-melt control device；
The ice-melt control device is used to calculate ice melting current by the ice covering thickness and environmental condition of direct current contact net
Value, and inverter signal is sent to the corresponding train traction power supply unit of ice-melt section, so that the train traction
The four-quadrant Current transform unit of power supply unit, direct current contact net to ice-melt section, the train traction adjacent to ice-melt section
The diode rectification unit of power supply unit and described to form energy circulation between the corresponding AC network of ice-melt section and described
The electric current to ice-melt section of direct current contact net is not less than the ice melting current value.
In an embodiment of the present invention, the ice-melt control device be also used to it is described to ice-melt section it is corresponding another
The train traction power supply unit sends rectified signal；
So that the four-quadrant Current transform unit of train traction power supply unit, direct current contact net in inversion operating condition to ice-melt
Section, train traction power supply unit in rectification operating condition diode rectification unit exchange with described to ice-melt section is corresponding
Energy circulation is formed between power grid, and the electric current to ice-melt section of the direct current contact net is not less than the ice melting current value.
One embodiment of the invention provides a kind of train traction power supply system control method, comprising: passes through direct current contact net
Ice covering thickness and environmental condition calculate ice melting current value；
Inverter signal is sent to the corresponding train traction power supply unit of ice-melt section, so that the train is led
Draw the four-quadrant Current transform unit of power supply unit, direct current contact net is led to ice-melt section, the train adjacent to ice-melt section
Draw the diode rectification unit of power supply unit and described to form energy circulation, and institute between the corresponding AC network of ice-melt section
The electric current to ice-melt section of direct current contact net is stated not less than the ice melting current value.
In an embodiment of the present invention, described to be sent to the corresponding train traction power supply unit of ice-melt section
After inverter signal, further includes:
Rectified signal is sent to another corresponding described train traction power supply unit of ice-melt section to described, so as to be in
The four-quadrant Current transform unit of the train traction power supply unit of inversion operating condition, direct current contact net to ice-melt section, in rectification work
The diode rectification unit of the train traction power supply unit of condition and described to form energy between the corresponding AC network of ice-melt section
Amount circulation, and the electric current to ice-melt section of the direct current contact net is not less than the ice melting current value.
The present invention provides a kind of train traction power supply unit, system and control method, and wherein device includes: diode rectification
Unit, four-quadrant Current transform unit and central controller；Diode rectification unit, four-quadrant Current transform unit and central controller are simultaneously
Connection connection AC network and direct current contact net, central controller connect four-quadrant Current transform unit, and central controller is used for according to friendship
The output electric current of the voltage adjustment four-quadrant Current transform unit of the voltage of galvanic electricity net, electric current and direct current contact net；Train traction power supply
When device is in traction working condition, the alternating current of AC network is converted to direct current by diode rectification unit and four-quadrant Current transform unit
Electricity is exported to direct current contact net；When train traction power supply unit is in damped condition, four-quadrant Current transform unit is by direct current contact net
Direct current be converted to alternating current to AC network export；When train traction power supply unit is in reactive compensation operating condition, center control
Device processed carries out reactive compensation to AC network according to the power factor controlling four-quadrant Current transform unit of AC network；Central controller
It is also used to receive the inversion instruction comprising ice melting current value of ice-melt control device transmission, and is instructed according to inversion by train traction
Power supply unit switches to inversion operating condition so that the four-quadrant Current transform unit of train traction power supply unit, direct current contact net wait melt
Ice formation section, the train traction power supply unit adjacent to ice-melt section diode rectification unit exchanged with to ice-melt section is corresponding
Energy circulation is formed between power grid, and the electric current to ice-melt section of direct current contact net is not less than ice melting current value.The present invention mentions
Train traction power supply unit, system and the control method of confession enrich the function of train traction power supply system.Specifically, this implementation
Example provide train traction power supply unit, system and control method can:
1, when train traction power supply unit is in traction working condition, energy is provided for train operation；
2, when train traction power supply unit is in damped condition, it can be realized the transmitted in both directions of energy, by extra braking
Energy back returns AC network, uses for other loads, realizes energy conservation；
3, when entire tractive power supply system power factor is lower, train traction power supply unit is in reactive compensation operating condition,
Power factor can be made to meet the requirements with compensating power；
4, when contact net icing, by controlling two train traction power supply units to ice-melt section, exchanging it
Access is formed between power grid and direct current contact net, to realize ice-melt, avoids having used additional high-capacity direct current adjustable electric
Source reduces the harmonic pollution to AC network.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of train traction power supply unit of the present invention；
Fig. 2 is operation principle schematic diagram when train traction power supply unit of the present invention is in traction working condition；
Fig. 3 is operation principle schematic diagram when train traction power supply unit of the present invention is in damped condition；
Fig. 4 is operation principle schematic diagram when train traction power supply unit of the present invention is in reactive compensation operating condition；
Fig. 5 is operation principle schematic diagram when train traction power supply unit of the present invention is in inversion operating condition；
Fig. 6 is train traction power supply unit control principle schematic diagram of the present invention；
Fig. 7 is the structural schematic diagram of train traction power supply unit diode rectification unit of the present invention；
Fig. 8 is the structural schematic diagram of train traction power supply unit four-quadrant Current transform unit of the present invention；
Fig. 9 is the structural schematic diagram of train traction power supply system of the present invention；
Figure 10 is the flow diagram of train traction power supply system control method embodiment one of the present invention；
Figure 11 is the flow diagram of train traction power supply system control method embodiment two of the present invention.
Through the above attached drawings, it has been shown that the specific embodiment of the disclosure will be hereinafter described in more detail.These attached drawings
It is not intended to limit the scope of this disclosure concept by any means with verbal description, but is by referring to specific embodiments
Those skilled in the art illustrate the concept of the disclosure.Technical solution of the present invention is carried out specifically with specifically embodiment below
It is bright.The following examples can be combined with each other, may be no longer superfluous in some embodiments for the same or similar concept or process
It states.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Description and claims of this specification and term " first ", " second ", " third ", " in above-mentioned attached drawing
The (if present)s such as four " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should manage
The data that solution uses in this way are interchangeable under appropriate circumstances, so that the embodiment of the present invention described herein for example can be to remove
Sequence other than those of illustrating or describe herein is implemented.In addition, term " includes " and " having " and theirs is any
Deformation, it is intended that cover it is non-exclusive include, for example, containing the process, method of a series of steps or units, system, production
Product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include be not clearly listed or for this
A little process, methods, the other step or units of product or equipment inherently.
Technical solution of the present invention is described in detail with specifically embodiment below.These specific implementations below
Example can be combined with each other, and the same or similar concept or process may be repeated no more in some embodiments.
Fig. 1 is the structural schematic diagram of train traction power supply unit of the present invention.As shown in Figure 1, being provided in the embodiment of the present invention
Train traction power supply unit include: diode rectification unit, four-quadrant Current transform unit and central controller.Wherein, diode
Rectification Power Factor, four-quadrant Current transform unit and central controller are connected in parallel AC network and direct current contact net, and central controller connects
Four-quadrant Current transform unit is connect, central controller is used to adjust according to the voltage of the voltage of AC network, electric current and direct current contact net
The output electric current of four-quadrant Current transform unit；When train traction power supply unit is in traction working condition, diode rectification unit and four-quadrant
The alternating current of AC network is converted to direct current and exported to direct current contact net by limit Current transform unit；Train traction power supply unit is in
When damped condition, the direct current of direct current contact net is converted to alternating current and exported to AC network by four-quadrant Current transform unit；Train
When traction power set is in reactive compensation operating condition, central controller is according to the power factor controlling four-quadrant unsteady flow of AC network
Unit carries out reactive compensation to AC network；What central controller was also used to receive the transmission of ice-melt control device includes ice melting current
The inversion of value instructs, and is instructed according to inversion train traction power supply unit switching to inversion operating condition, so that train traction is powered
The four-quadrant Current transform unit of device, direct current contact net to ice-melt section, the train traction power supply unit adjacent to ice-melt section
Diode rectification unit and to form energy circulation between the corresponding AC network of ice-melt section, and direct current contact net wait melt
The electric current of ice formation section is not less than ice melting current value.
Specifically, in order to solve the problems, such as that train traction power supply system function is more single in the prior art, the present embodiment
In train traction power supply unit by being led with realizing simultaneously by diode rectification unit and four-quadrant Current transform unit parallel running
Draw the function of power supply, train regenerative braking energy feedback, reactive compensation and contact net ice-melt.
1, Fig. 2 is operation principle schematic diagram when train traction power supply unit of the present invention is in traction working condition.Such as Fig. 2 institute
Show, when train traction power supply unit nearby has train to need to provide power, train traction is in traction working condition, diode rectification
Unit and four-quadrant Current transform unit are total to same direction train and provide energy.Wherein, diode rectification unit and four-quadrant Current transform unit will
The alternating current of AC network is converted to direct current and exports direct current to direct current contact net, so that train is connect by the direct current accessed
Direct current in net-fault obtains haulage capacity.
2, Fig. 3 is operation principle schematic diagram when train traction power supply unit of the present invention is in damped condition.Such as Fig. 3 institute
Show, when train traction power supply unit nearby has train braking, train traction power supply unit opens damped condition, the regeneration of train
Braking energy can feed back to AC network recycling by four-quadrant Current transform unit.Wherein, four quadrant convertor unit will be straight
The direct current of stream contact net is converted to alternating current and exports to AC network.
3, Fig. 4 is operation principle schematic diagram when train traction power supply unit of the present invention is in reactive compensation operating condition.Such as Fig. 4 institute
Show, when the power factor of the power supply system where train traction power supply unit is lower, the four of train power supply device can be passed through
Quadrant Current transform unit compensating power, so that power factor is met the requirements.Wherein, such as the train traction power supply unit in Fig. 4
The reactive power generated by line cord capacitor.And optionally, the central controller of train traction power supply unit can be
When system is in reactive compensation operating condition, nothing is carried out to AC network according to the power factor controlling four quadrant convertor of AC network
Function compensation.
4, Fig. 5 is operation principle schematic diagram when train traction power supply unit of the present invention is in inversion operating condition.Such as Fig. 5 institute
Show, when a certain section of route of the direct current contact net near train traction power supply unit needs ice-melt, train traction is for Denso
After setting the inversion instruction comprising ice melting current value that ice-melt control device in the system of receiving is sent, instructed according to inversion by train
Traction power set switches to inversion operating condition, so that should be in the four-quadrant convertor of the train traction power supply unit of inversion operating condition
Group, direct current contact net to ice-melt section and the diode rectification machine of the train traction power supply unit adjacent to ice-melt section
Group and to form energy circulation between the corresponding AC network of ice-melt section, i.e., the energy of arrow direction as shown in Figure 5 follows
Ring direction.And central controller also controls the electric current to ice-melt section of direct current contact net not less than the transmission of ice-melt control device
Ice melting current value.Wherein optionally, ice melting current value can be ice-melt control device according on direct current contact net to ice-melt section
Monitoring information, such as the monitoring information of ice covering thickness and temperature, humidity environmental condition calculates required ice melting current value.
Further, in above-mentioned embodiment shown in fig. 5, the train traction power supply unit in inversion operating condition is wait melt
Section adjacent train traction power supply unit in ice formation can also include rectification operating condition.Wherein, adjacent train traction power supply unit is removed
Have except above-mentioned operating condition, the central controller of the train traction power supply unit can also receive the transmission of ice-melt control device
Rectification instruction comprising ice melting current value, and train traction power supply unit is switched to by rectification operating condition according to rectification instruction.To
So that the four-quadrant Current transform unit of train traction power supply unit, direct current contact net in inversion operating condition to ice-melt section, with
And the diode rectification unit of the train traction power supply unit in rectification operating condition with to the corresponding AC network of ice-melt section it
Between form energy circulation.And the train traction power supply unit in inversion operating condition and the train traction power supply in rectification operating condition
The electric current to ice-melt section between device is not less than the ice melting current value that ice-melt control device is sent.Wherein optionally, ice-melt
Current value can be ice-melt control device according to ice covering thickness and temperature, the environment such as humidity on direct current contact net to ice-melt section
Condition calculates required ice melting current value.
To sum up, train traction power supply unit provided by the embodiments of the present application can be in train traction power supply unit and lead
When drawing operating condition, the alternating current of AC network is converted to direct current and connect to direct current by diode rectification unit and four-quadrant Current transform unit
It touches net and exports；When train traction power supply unit is in damped condition, four-quadrant Current transform unit turns the direct current of direct current contact net
Alternating current is changed to export to AC network；When train traction power supply unit is in reactive compensation operating condition, central controller is according to friendship
The power factor controlling four-quadrant Current transform unit of galvanic electricity net carries out reactive compensation to AC network；Central controller is also used to receive
The inversion instruction comprising ice melting current value that ice-melt control device is sent, and instructed according to inversion and cut train traction power supply unit
Shift to inversion operating condition so that the four-quadrant Current transform unit of train traction power supply unit, direct current contact net to ice-melt section, wait melt
The diode rectification unit of the adjacent train traction power supply unit of ice formation section and to shape between the corresponding AC network of ice-melt section
At energy circulation, and the electric current to ice-melt section of direct current contact net is not less than ice melting current value.So as to realize simultaneously such as
Under technical effect: 1, when train traction power supply unit is in traction working condition, provide energy for train operation；2, train traction supplies
When electric installation is in damped condition, the transmitted in both directions of energy can be realized, extra braking energy is fed back into AC network, supply
Other loads use, and realize energy conservation；3, when entire tractive power supply system power factor is lower, train traction power supply unit is in
Reactive compensation operating condition can be such that power factor meets the requirements with compensating power；4, when contact net icing, by control to
Two train traction power supply units of ice-melt section, make it form access between AC network and direct current contact net, thus real
Ice-melt is showed, has avoided having used additional high-capacity direct current regulated power supply, reduce the harmonic pollution to AC network.
Further, in the above-described embodiments, when train traction power supply unit is in reactive compensation operating condition, center control
Implement body is used to generate referenced reactive current by the reactive power of AC network Bulk Supply Substation point of incoming cables, and supplies to train traction
The four-quadrant Current transform unit of electric installation sends referenced reactive current, so that four-quadrant Current transform unit carries out idle benefit to AC network
It repays.Such as: in one embodiment, it can be understood as, the reactive compensation using four-quadrant Current transform unit to AC network, tool
In body implementation process, it can be understood as the pure perception operation of four-quadrant Current transform unit zero power factor (is equivalent to the adjustable electricity of bat value
Sense) perhaps the pure operation at leading power factor of zero power factor (being equivalent to the adjustable capacitor of amplitude) to be to compensate capacitive load or inductive load
Influence to AC network power factor.The control logic of reactive power compensation can be written in the controller to determine, Huo Zheyi
It is determined according to preset quantized data, it is not limited here.
Optionally, in the above-described embodiments, reactive power of the central controller to the Bulk Supply Substation point of incoming cables of AC network
With active power independent control.Specifically, Fig. 6 is train traction power supply unit control principle schematic diagram of the present invention.As shown in Figure 6
Train traction power supply unit in, the closed-loop current control method of four-quadrant Current transform unit is used based on synchronous rotating frame
Current decoupled control realizes the independent control to active power and reactive power.Specifically, alternating voltage is detected by detection, and
Locking phase is carried out to it, obtains network voltage synchro angle θ；Three-phase current is converted into biphase current id and iq using coordinate transform,
Wherein id represents watt current, and iq represents reactive current, to realize the independent control to active power and reactive power；Wherein have
The calculating of function current-order is and to carry out PI closed-loop control by detecting direct current contact net voltage and obtain；Referenced reactive current
Calculating is to receive to be calculated according to the reactive power value of Bulk Supply Substation point of incoming cables from SCADA by central controller, is counted
Calculating formula isWherein Ed is value of the Circuit Fault on Secondary Transformer voltage under synchronous coordinate system；D, q axis PI are controlled
The output of system generates six road driving pulses for modulating.
Optionally, in the above embodiments, diode rectification unit is 24 pulse wave diode rectification units, comprising: two
Platform rectifier transformer and four diode rectifier bridges.Specifically, Fig. 7 is train traction power supply unit diode rectification machine of the present invention
The structural schematic diagram of group.Wherein, two three winding phase-shifting transformer first windings are that extend-triangle connects, difference phase shift+
7.5 ° and -7.5 °；Secondary side is respectively adopted star-like connection and connects with angle-style；High AC voltage is reduced to diode by transformer
Alternating voltage needed for rectifier；Diode rectifier DC side is coupled by the way of in parallel.Diode rectification unit is arranging
Vehicle is powered when drawing for it, is not worked in train braking.
Optionally, in the above embodiments, four-quadrant Current transform unit includes: two-winding transformer and four-quadrant unsteady flow
Device.Specifically, Fig. 8 is the structural schematic diagram of train traction power supply unit four-quadrant Current transform unit of the present invention.Wherein, wherein four-quadrant
It limits current transformer and uses isolated form doubleization main circuit, i.e., it is using multiwinding transformer that each PWM rectifier exchange side is mutually isolated
It opens；Transformer primary side uses star-like connection, and secondary side is all made of triangle connection；High AC voltage is reduced to by transformer
Alternating voltage needed for four quadrant convertor.
Fig. 9 is the structural schematic diagram of train traction power supply system of the present invention.As shown in figure 9, provided by the embodiments of the present application
Train traction power supply system includes: the train traction power supply unit of ice-melt control device and N number of any one of such as above-described embodiment.
Wherein, the central controller of N number of train traction power supply unit connects ice-melt control device；Ice-melt control device is for passing through direct current
The ice covering thickness and environmental condition of contact net calculate ice melting current value, and supply to the corresponding train traction of ice-melt section
Electric installation send inverter signal so that the four-quadrant Current transform unit of train traction power supply unit, direct current contact net to ice-melt area
Section, the train traction power supply unit adjacent to ice-melt section diode rectification unit with to the corresponding AC network of ice-melt section
Between form energy circulation, and the electric current to ice-melt section of direct current contact net is not less than ice melting current value.
Specifically, when a certain section of the route of direct current contact net in train traction power supply system needs ice-melt, ice-melt control
Device processed is according to the monitoring information on direct current contact net to ice-melt section, such as ice covering thickness and temperature, humidity environmental condition
Monitoring information calculates required ice melting current value.Ice-melt control device is to any one other to ice-melt section, as shown in Figure 9
The central controller of train traction power supply unit sends the inversion comprising ice melting current value and instructs, and to receive inversion instruction
Train power supply device, instructed according to inversion and train traction power supply unit switched into inversion operating condition, so that inversion work should be in
The four-quadrant Current transform unit of the train traction power supply unit of condition, direct current contact net to ice-melt section and to ice-melt section phase
It the diode rectification unit of adjacent train traction power supply unit and is followed to form energy between the corresponding AC network of ice-melt section
Ring forms the energy circulation direction of arrow direction as shown in Figure 5.And receive the train power supply device of inversion instruction
The electric current to ice-melt section that central controller also controls direct current contact net is not less than the ice melting current that ice-melt control device is sent
Value.
Further, in the above-described embodiments, ice-melt control device is in addition to any one train traction power supply unit
Central controller is sent outside the inversion instruction comprising ice melting current value, also to the train traction for being in inversion operating condition to ice-melt section
Power supply unit is adjacent, sends the rectification comprising ice melting current value in the train traction power supply unit to the ice-melt section other side
Instruction.So that the train traction power supply unit for receiving rectification instruction switches to train traction power supply unit according to rectification instruction
Rectify operating condition.
To make jointly in inversion by two train traction power supply units in inversion operating condition and rectification operating condition
The four-quadrant Current transform unit of the train traction power supply unit of operating condition, direct current contact net to ice-melt section, and in rectification work
The diode rectification unit of the train traction power supply unit of condition and between the corresponding AC network of ice-melt section formed energy follow
Ring.And in inversion operating condition train traction power supply unit and in rectification operating condition train traction power supply unit between to
The electric current of ice-melt section is not less than the ice melting current value that ice-melt control device is sent.
Figure 10 is the flow diagram of train traction power supply system control method embodiment one of the present invention.As shown in Figure 10,
Train traction power supply system control method provided in this embodiment includes:
S1001: ice melting current value is calculated by the ice covering thickness and environmental condition of direct current contact net.
S1002: inverter signal is sent to corresponding the train traction power supply unit of ice-melt section, so that described
The four-quadrant Current transform unit of train traction power supply unit, direct current contact net to ice-melt section, described adjacent to ice-melt section
The diode rectification unit of train traction power supply unit and it is described between the corresponding AC network of ice-melt section formed energy follow
Ring, and the electric current to ice-melt section of the direct current contact net is not less than the ice melting current value.
Train traction power supply system control method provided in this embodiment is used for train traction power supply system shown in Fig. 9
Middle execution, implementation is identical as principle, can refer to previous embodiment, repeats no more.
Further, Figure 11 is the flow diagram of train traction power supply system control method embodiment two of the present invention.Figure
Embodiment shown in 11 is on the basis of embodiment shown in Fig. 10, after S1002 further include:
S1003: sending rectified signal to another corresponding described train traction power supply unit of ice-melt section to described, with
Make the four-quadrant Current transform unit of train traction power supply unit in inversion operating condition, direct current contact net to ice-melt section, be in
Rectify the diode rectification unit of train traction power supply unit of operating condition and described between the corresponding AC network of ice-melt section
Energy circulation is formed, and the electric current to ice-melt section of the direct current contact net is not less than the ice melting current value.
Train traction power supply system control method provided in this embodiment is used for train traction power supply system shown in Fig. 9
Middle execution, implementation is identical as principle, can refer to previous embodiment, repeats no more.
It invents an embodiment and a kind of electronic equipment is also provided, comprising:
Processor；And memory, the executable instruction for storage processor；
Wherein, processor is configured to execute the train traction in any of the above-described embodiment via executable instruction is executed
Power supply system control method.
One embodiment of the invention also provides a kind of storage medium, comprising: readable storage medium storing program for executing and computer program, the meter
Calculation machine program is stored on readable storage medium storing program for executing, and the computer program leads for realizing train described in the various embodiments described above
Draw power supply system control method.
One embodiment of the invention also provides a kind of program product, which includes:
Computer program (executes instruction), which is stored in readable storage medium storing program for executing.Encoding device is extremely
A few processor can read the computer program from readable storage medium storing program for executing, at least one processor executes the computer program
So that encoding device implements the train traction power supply system control method that various embodiments above-mentioned provide.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above-mentioned each method embodiment can lead to
The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer readable storage medium.The journey
When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned include: ROM, RAM, magnetic disk or
The various media that can store program code such as person's CD.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of train traction power supply unit characterized by comprising diode rectification unit, four-quadrant Current transform unit and in
Entreat controller；
The diode rectification unit, the four-quadrant Current transform unit and the central controller are connected in parallel AC network and straight
Contact net is flowed, the central controller connects the four-quadrant Current transform unit, and the central controller is used for according to the exchange
The voltage of the voltage of power grid, electric current and the direct current contact net adjusts the output electric current of the four-quadrant Current transform unit；
When the train traction power supply unit is in traction working condition, the diode rectification unit and the four-quadrant Current transform unit
The alternating current of the AC network is converted to direct current to export to the direct current contact net；
When the train traction power supply unit is in damped condition, the four-quadrant Current transform unit is straight by the direct current contact net
Galvanic electricity is converted to alternating current and exports to the AC network；
When the train traction power supply unit is in reactive compensation operating condition, the central controller is according to the function of the AC network
Rate factor controls the four-quadrant Current transform unit and carries out reactive compensation to the AC network；
The inversion comprising ice melting current value that the central controller is also used to receive the transmission of ice-melt control device instructs, and according to
The train traction power supply unit is switched to inversion operating condition by the inversion instruction, so that the four of the train traction power supply unit
Quadrant Current transform unit, direct current contact net to ice-melt section, the train traction power supply unit adjacent to ice-melt section two
Pole pipe Rectification Power Factor and described to form energy circulation between the corresponding AC network of ice-melt section, and the direct current contact net
Electric current to ice-melt section is not less than the ice melting current value.
2. the apparatus according to claim 1, which is characterized in that
The rectification comprising ice melting current value that the central controller is also used to receive the transmission of ice-melt control device instructs, and according to
The train traction power supply unit is switched to rectification operating condition by the rectification instruction；
So that the four-quadrant Current transform unit of train traction power supply unit, direct current contact net in inversion operating condition to ice-melt area
Section, the diode rectification unit of train traction power supply unit in rectification operating condition and described to the corresponding alternating current of ice-melt section
Energy circulation is formed between net, and the electric current to ice-melt section of the direct current contact net is not less than the ice melting current value.
3. device according to claim 1 or 2, which is characterized in that
When the train traction power supply unit is in reactive compensation operating condition, the central controller is specifically used for, and passes through the friendship
The reactive power of the Bulk Supply Substation point of incoming cables of galvanic electricity net generates referenced reactive current, described in Xiang Suoshu four-quadrant Current transform unit is sent
Referenced reactive current, so that the four-quadrant Current transform unit carries out reactive compensation to the AC network.
4. device according to claim 3, which is characterized in that
Reactive power and active power independent control of the central controller to the Bulk Supply Substation point of incoming cables of the AC network.
5. device according to claim 3, which is characterized in that
The diode rectification unit is 24 pulse wave diode rectification units, comprising: two rectifier transformers and four diodes
Rectifier bridge.
6. device according to claim 3, which is characterized in that
The four-quadrant Current transform unit includes: two-winding transformer and four quadrant convertor.
7. a kind of train traction power supply system characterized by comprising ice-melt control device and N number of such as claim 1-6 are any
Train traction power supply unit described in；
The central controller of N number of train traction power supply unit connects the ice-melt control device；
The ice-melt control device is used to calculate ice melting current value by the ice covering thickness and environmental condition of direct current contact net, and
Inverter signal is sent to the corresponding train traction power supply unit of ice-melt section, so that the train traction is for Denso
The four-quadrant Current transform unit set, direct current contact net to ice-melt section, the train traction adjacent to ice-melt section for Denso
The diode rectification unit set and described to form energy circulation between the corresponding AC network of ice-melt section, and the direct current connects
The electric current to ice-melt section touched net is not less than the ice melting current value.
8. system according to claim 7, which is characterized in that
The ice-melt control device is also used to described to another corresponding described train traction power supply unit hair of ice-melt section
Send rectified signal；
So that the four-quadrant Current transform unit of train traction power supply unit, direct current contact net in inversion operating condition to ice-melt area
Section, the diode rectification unit of train traction power supply unit in rectification operating condition and described to the corresponding alternating current of ice-melt section
Energy circulation is formed between net, and the electric current to ice-melt section of the direct current contact net is not less than the ice melting current value.
9. a kind of train traction power supply system control method characterized by comprising
Ice melting current value is calculated by the ice covering thickness and environmental condition of direct current contact net；
Inverter signal is sent to the corresponding train traction power supply unit of ice-melt section, so that the train traction supplies
The four-quadrant Current transform unit of electric installation, direct current contact net are supplied to ice-melt section, the train traction adjacent to ice-melt section
The diode rectification unit of electric installation and described to form energy circulation between the corresponding AC network of ice-melt section and described straight
The electric current to ice-melt section for flowing contact net is not less than the ice melting current value.
10. according to the method described in claim 9, it is characterized in that, described to the corresponding train of ice-melt section
Traction power set is sent after inverter signal, further includes:
Rectified signal is sent to another corresponding described train traction power supply unit of ice-melt section to described, so as to be in inversion
The four-quadrant Current transform unit of the train traction power supply unit of operating condition, direct current contact net to ice-melt section, in rectification operating condition
The diode rectification unit of train traction power supply unit and it is described between the corresponding AC network of ice-melt section formed energy follow
Ring, and the electric current to ice-melt section of the direct current contact net is not less than the ice melting current value.
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| CN201810749171 | 2018-07-10 | ||
| CN2018107491712 | 2018-07-10 |
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| CN111740438A (en) * | 2020-06-16 | 2020-10-02 | 同济大学 | Urban rail transit regenerative braking energy management and control system and control method thereof |
| CN113370849A (en) * | 2021-07-30 | 2021-09-10 | 清华大学 | Traction power supply system with ice melting and energy feedback functions |
| CN114161999A (en) * | 2021-11-18 | 2022-03-11 | 新风光电子科技股份有限公司 | Control method of bidirectional converter device with subway traction network ice melting function |
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