CN206049416U - Single phase power supply device, electric railway traction power supply system - Google Patents
Single phase power supply device, electric railway traction power supply system Download PDFInfo
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- CN206049416U CN206049416U CN201620944968.4U CN201620944968U CN206049416U CN 206049416 U CN206049416 U CN 206049416U CN 201620944968 U CN201620944968 U CN 201620944968U CN 206049416 U CN206049416 U CN 206049416U
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Abstract
The utility model discloses single phase power supply device, electric railway traction power supply system, electric power system includes power isochronous controller, some single phase power supply devices, some interval interconnection switches, single phase power supply device includes many vice-side winding transformators, some power conversion unit bodies and master controller, it is consistent with phase place that power supply isochronous controller is responsible for the virtual value of Traction networks whole network voltage, frequency, according to synchronic command, single phase power supply device realizes that three phase mains is converted into synchronous single phase poaer supply, it is interval for unified entirety that interval interconnection switch connects each power supply.This utility model efficiently solves the power quality problem that traditional tractive power supply system is caused to public electric wire net, provides controllable, reliable, continuous power supply for electric locomotive, while providing ice-melt function, has ensured the safe and reliable of tractive power supply system.
Description
Technical field
This utility model is related to a kind of single phase power supply device, electric railway traction power supply system, belongs to power electronics change
Flow Technique and electric railway traction power supply technique field.
Background technology
Under the epoch of the outer high ferro great development of Now Domestic, electric railway is provided by force for the high speed development of national economy
Strong supporting role, however as the scale expanding day of electric railway, its " pollution " to public electric wire net is also increasingly bright
It is aobvious, it is mainly reflected in three aspects of idle, harmonic wave and negative phase-sequence.Wherein, due to various types of dynamic passive compensations (SVG,
SVC), the popularization and application of active filter (APF) and locomotive high-power factory rectifier (HPF-Rectifier), it is idle and
Harmonic problem has obtained a certain degree of control, but the improvement to negative sequence component does not even obtain positive effect.
The problem of electric railway negative sequence component, its root are that the traction substation of electric railway is taken using three-phase
Electricity, the structure of single phase power supply, although circulating the technological means such as single-phase by balancing transformer (Scott), three-phase wheel can be one
Determine in degree, to reduce negative sequence component, but as locomotive load powers the interval space-time inhomogeneities being distributed clearly whole,
Therefore solve the problems, such as that negative sequence component should set about carrying out from method of supplying power to.
Patent of invention 201310487237.2 provides a kind of cophase supply device and trailer system, flat mainly for adopting
The tractive power supply system of weighing apparatus transformator (Soctt), the tractive power supply system to adopting direct power-supplying forms do not have effect, Er Qiehui
Original power supply interval of Traction Station is caused to change.Patent of invention 201511032376.1 provides a kind of modular multilevel knot
The friendship orthogonal tractive power supply system of structure, realizes transformation of electrical energy using the current transformer of MMC structures, is difficult to realize redundancy, control technology
Complexity, Maturity are slightly lower.Invention 201510104620.4 provides a kind of three-phase for power supply system of electric traction and turns single-phase
Changer, using diode rectification, IGCT inversion, transformer boost structure, diode rectifier cannot absorb locomotive return
The electric energy of feedback, cannot realize redundancy and standby in addition, and reliability is low.Invention 200910041299.4 provides track electric power machine
The traction cophase supply device of car, needs significantly to change the original connection type of traction substation, needs to be configured with
Work(actuator and Reactive-power control device, system complex, practicality have much room for improvement.
Existing traction power supply net is divided into
Together, therefore train can produce the problem of short term outage and excessively interval impact when excessively interval, it is equal to train and Traction networks
Cause potential safety hazard.
In addition, electric railway traction power supply system is easily affected with the extreme weather such as icing by seasonal congealing, need
Individually supporting deicing device, by taking portable DC de-icing device as an example, needs patch when coming into operation, and workload is very
Greatly, the utilization rate of deicing device is also very low, but needs ice-melt often if any a plurality of circuit and be difficult to take into account.
The content of the invention
This utility model provides single phase power supply device, electric railway traction power supply system, by high voltage is decomposed into
Multiple low-voltages, three-phase uniformly undertake load, the technological means of single-phase superposition output, solve existing electric railway traction and supply
The long-standing electric energy pollution problem of electric system.
This utility model single phase power supply device adopts the following technical scheme that to realize：Single phase power supply device, including Multiple coil
Transformator, some power conversion units and master controller；The multiwinding transformer includes a high pressure primary side winding and multiple
Low voltage secondary winding, the group number of vice-side winding is P, and every group of vice-side winding is K, every group of vice-side winding to the no-load voltage ratio of primary side winding
Connection corresponding with the input of a power conversion unit；The outfan of some power conversion units is sequentially connected, and from first
The L arms of individual power conversion unit draw the first outfan of the single phase power supply device, from the R arms of P power conversion unit
Draw the second outfan of the single phase power supply device；The master controller is connected with each power conversion unit, is controlled each
The operation of power conversion unit.
The power conversion unit includes rectification circuit, DC capacitor, inverter circuit, bypass circuit and unit panel,
Input of the exchange end of rectification circuit for power conversion unit, the DC terminal of rectification circuit, the DC terminal of inverter circuit and straight
Stream electric capacity is connected according to positive-negative polarity correspondence, and the exchange end of inverter circuit is the outfan of power conversion unit, and bypass circuit is simultaneously
It is associated in the outfan of power conversion unit；Unit panel respectively with master controller, rectification circuit, inverter circuit and bypass circuit
Connection, receives all parts work in the instruction control power conversion unit of master controller.
The single phase power supply device also includes：For gathering the input current sensor of single phase power supply device input current,
Its former limit is connected with multiwinding transformer primary side winding；Output voltage for gathering single phase power supply device output voltage is sensed
Device, its former limit are connected in parallel between the L arms of first power conversion unit and the R arms of P power conversion unit；And for adopting
The output current sensor of collection single phase power supply device output current, its former limit are connected with the L arms of first power conversion unit；It is described
Input current sensor, output voltage sensor and output current sensor are connected with the master controller respectively.
The single phase power supply device also includes input switch；The end of incoming cables of the input switch and three-phase high-voltage power supply phase
Even, leading-out terminal is connected with the primary side winding of the multiwinding transformer.
The single phase power supply device also includes charge switch and charging resistor, and charge switch is connected with after charging resistor series connection
Between three-phase high-voltage power supply and the primary side winding of multiwinding transformer.
This utility model electric railway traction power supply system adopts the following technical scheme that to realize：Electric railway traction
Electric power system, including power supply isochronous controller, some aforementioned single phase power supply devices and some interval interconnection switches；The power supply is same
Step controller is connected with each single phase power supply device and each interval interconnection switch respectively；The single phase power supply device is for by three
Phase voltage is converted to after single-phase voltage to train power supply, the first outfan and feed line connection, and the second outfan and return wire connect
Connect；The interval interconnection switch feed line interval with two neighboring power supply is connected.
Compared with prior art, this utility model includes following beneficial effect：
1st, the single phase power supply device that this utility model is provided uniformly is undertaken by high voltage is decomposed multiple low-voltages, three-phase
Load, the technological means of single-phase superposition output, realize conversion of the electric energy from three-phase alternating current to single phase ac, and conversion process is to three-phase
It is complete equipilibrium for side, solves the long-standing electric energy pollution problem of electric railway traction power supply system.
2nd, the single-phase electric energy frequency and virtual value of output is fully controllable, can be adjusted flexibly, can meet different power frequencies
The demand of the electric railway of standard (50Hz or 60Hz).
3rd, this utility model generates total synchronic command, control single phase power supply device output one by isochronous controller of powering
The single-phase voltage of cause so that Traction networks break the limitation according to interval power supply, solves the excessively interval series of problems of train.
4th, in addition to conventional electron function, the single phase power supply device that this utility model is provided can also be feed line and backflow
Line provides direct current and the ice-melt function of exchanging two kinds of different modes, greatly improves the utilization rate of equipment, reduces and be separately configured
The investment of deicing device and workload.
Description of the drawings
A kind of electric railway traction power supply system topology diagram that Fig. 1 is related to for this utility model；
The topology diagram of the single phase power supply device that Fig. 2 is related to for this utility model；
The topology diagram of the power conversion unit that Fig. 3 is related to for this utility model；
The relation of synchronic command Cs, pressuring curve and power conversion unit output voltage that Fig. 4 is related to for this utility model
Figure；
Fig. 5 is separate unit single phase power supply device output voltage Uo, the graph of relation of curve of output Co and synchronic command Cs；
Fig. 6 does not complete contact, the schematic diagram powered by corresponding single phase power supply device for each power supply is interval；
Fig. 7 is that each power supply interval completes the electrical schematic after getting in touch with；
Fig. 8 is the schematic diagram that certain single phase power supply plant failure is bypassed rear haulage power supply network；
Fig. 9 is the equivalence electricity that j power conversion unit, P-j power conversion unit of bypass are put under DC ice melting pattern
Road；
Figure 10 is to exchange the equivalent circuit under ice-melt mode.
Specific embodiment
This utility model is further described with reference to embodiment and Figure of description, but enforcement of the present utility model
Mode not limited to this.
Embodiment
As shown in figure 1, this utility model electric railway traction power supply system includes isochronous controller 1, Ruo Gandan of powering
Phase electric supply installation 2 and some interval interconnection switches 3, power supply isochronous controller are responsible for the virtual value of Traction networks whole network voltage, frequency
Consistent with phase place, according to synchronic command, single phase power supply device realizes that three phase mains is converted into synchronous single phase poaer supply, interval connection
It is unified overall that each power supply of network switch connection is interval.Wherein power isochronous controller 1 respectively with each single phase power supply device 2 and
Each interval interconnection switch 3 connects, and is responsible for the work of each single phase power supply device 2 of control and each interval interconnection switch 3；It is single-phase
The input of electric supply installation 2 and three phase mains connection, the outfan and feed line of single phase power supply device 2, return wire connection, are responsible for
Three-phase voltage is converted to after single-phase voltage to train power supply；Interval interconnection switch 3 is connected with two neighboring interval feed line,
It is responsible for the interval annexation of the two neighboring power supply of control.Adjacent power supply is interval to be connected by interval interconnection switch 3, constitutes system
One traction power supply net.The input of single phase power supply device 2 is connected with the outfan of tractive transformer, and input voltage is
27.5kV；First outfan of single phase power supply device 2 is connected with corresponding interval feed line, the second outfan and return wire phase
Even, as shown in Figure 2.Single phase power supply device also can be powered by the high voltage power supply of independent 35kV or other higher voltage grades,
The power supply mode of single phase power supply device does not affect the topological structure and control method of device body.
As shown in Fig. 2 single phase power supply device 2 includes input switch 2.1, charge switch 2.2, charging resistor 2.3, Multiple coil
Transformator 2.4, some power conversion units 2.5, the first output switch 2.6, the second output switch 2.7, input current sensor
2.8th, output voltage sensor 2.9, output current sensor 2.10 and master controller 2.11.The inlet wire of the input switch 2.1
End is connected with three-phase high-voltage power supply, and leading-out terminal is connected with the primary side winding of the multiwinding transformer 2.4, and three-phase high-voltage power supply can
Be traction substation tractive transformer outfan (27.5kV), or high voltage power supply (35kV) independent all the way,
The present embodiment selects the outfan of tractive transformer as three-phase high-voltage power supply.The end of incoming cables of the charge switch 2.2 and three-phase
High voltage power supply is connected, and leading-out terminal is connected with 2.3 end of incoming cables of the charging resistor, and 2.3 leading-out terminal of charging resistor is opened with the input
The leading-out terminal of pass 2.1 is connected, i.e., charge switch 2.2 and charging resistor 2.3 are in parallel with input switch 2.1 after connecting.It is described it is many around
Group transformator 2.4 is made up of a high pressure primary side winding and multiple low voltage secondary windings, and the group number of vice-side winding is P, and per group secondary
Side winding is K to the no-load voltage ratio of primary side winding, and couples with former limit three-phase windings, is electrically isolated from one another, every group of vice-side winding with
The input correspondence of one power conversion unit 2.5 connects；The effect of multiwinding transformer is to decompose a three-phase high voltage
Into multiple on all four three-phase low-voltages.The outfan of whole power conversion units 2.5 is sequentially connected；First power conversion
The L arms of unit are connected with the first output switch 2.6, and used as the first outfan of single phase power supply device 2, the P power conversion is single
The R arms of unit are connected with the second output switch 2.7, used as the second outfan of single phase power supply device 2.
The input current sensor 2.8 is used to gather single phase power supply device input current, and its former limit is connected on input and opens
Close between 2.1 and 2.4 primary side winding of multiwinding transformer；The output voltage sensor 2.9 is used to gather single phase power supply device
Output voltage, its former limit is connected in parallel between the L arms of first power conversion unit and the R arms of P power conversion unit；Institute
Output current sensor 2.10 is stated for gathering the output current of single phase power supply device, its former limit is connected on first power conversion
Between the L arms of unit and the first output switch 2.6.Master controller 2.11 passes through optical fiber 2.12 and each power conversion unit 2.5
It is connected, controls the operation of each power conversion unit 2.5；By secondary cable and input switch 2.1, the first output switch 2.6
It is connected with the control end of the second output switch 2.7, the action of control input switch, the first output switch and the second output switch；
Passed by the secondary of secondary cable and the input current sensor 2.8, the secondary of output voltage sensor 2.9 and output current
The secondary of sensor 2.10 is connected.
Wherein, the topological structure of the power conversion unit 2.5 is as shown in figure 3, including rectification circuit 2.5.1, unidirectional current
The exchange end for holding 2.5.2, inverter circuit 2.5.3, bypass circuit 2.5.4 and unit panel 2.5.5, rectification circuit 2.5.1 is
The input of power conversion unit 2.5, the DC terminal of rectification circuit 2.5.1, the DC terminal of inverter circuit 2.5.3 and DC capacitor
2.5.2 it is connected according to positive-negative polarity correspondence, the exchange end of inverter circuit 2.5.3 is the outfan of power conversion unit 2.5, is bypassed
Circuit 2.5.4 is connected in parallel on the outfan of power conversion unit 2.5.Unit panel 2.5.5 passes through optical fiber 2.12 and master controller
2.11 are connected, and unit panel 2.5.5 is also connected with rectification circuit 2.5.1, inverter circuit 2.5.2 and bypass circuit 2.5.4 respectively
Connect, receive all parts work in the instruction control power conversion unit 2.5 of master controller 2.11.In the present embodiment, preferably
It is using the three-phase bridge of IGBT compositions as rectification circuit 2.5.1, using the H bridges of IGBT compositions as inverter circuit 2.5.3, single-phase
A.C. contactor is used as bypass circuit 2.5.4；Wherein IGBT can be substituted with all-controlling power electronics devices such as IGCT, IEGT, single
Cross streams catalyst can be substituted with bidirectional thyristor etc..
This utility model electric railway traction power supply system is controlled by following steps：
S1. manually the parameter of isochronous controller 1 of powering is configured, clearly the supply voltage ginseng of controlled Traction networks
Number, including voltage effective value, frequency and phase place, isochronous controller 1 of powering calculates the synchronic command of Traction networks according to institute's setting parameter,
The synchronic command contains virtual value, frequency and the phase information of a single-phase AC voltage.
Synchronic command and operating instruction are sent to the master controller of each single phase power supply device by isochronous controller 1 of S2. powering
2.11, master controller 2.11 controls affiliated single phase power supply device as steps described below after receiving synchronic command Cs and operating instruction
Work：
S2.1 shutdown → standby
Main controller controls charge switch is closed, and multiwinding transformer and power conversion unit begin through charging resistor and enter
Row charges；After charging interval T1, the DC voltage of each power conversion unit by it is basicly stable it is pre- supplement Udc1 with money, it is main
Control input switch closure, charge switch disconnect controller successively；After catch time T2, main control is by bristling with anger under optical fiber
Make to the unit panel of power conversion unit, make the rectification circuit of power conversion unit enter constant dc die pressing type, root
According to the operation principle of three-phase PWM reorganizer, DC voltage is lifted to running voltage Udc2 by；After upper lift time T3, master control
Device processed controls the first output switch and the second output switch closure, by first outfan and feed line phase of single phase power supply device
Even, the second outfan is connected with return wire.
After said process, separate unit single phase power supply device input switch closure, the first output switch, the second output switch
Closure, the rectification circuit of power conversion unit are operated in constant dc die pressing type, and DC voltage reaches running voltage Udc2, dress
Put and enter holding state.The change procedure of power conversion unit DC voltage is as shown in Figure 4.
S2.2 is standby → operation
Master controller draws curve of output Co according to the synchronic command Cs for being received and the artificial pressing time T4 for arranging, then
With reference to the direct-current working volts Udc2 of quantity P and power conversion unit of power conversion unit, each power conversion is calculated single
Rated voltage Uce is turned by rated voltage Uce of first inverter circuit according to the principle of power electronics sine wave pulse width modulated
Pwm signal is turned to, pwm signal is issued to by each unit panel by optical fiber, the inverter circuit of power conversion unit is made
Output single-phase alternating voltage Uco；The output voltage Ucon (n=1.2 ... P) of each power conversion unit stacks up, just
Constitute the output voltage Uo of the single phase power supply device, i.e. Uo=∑s Ucon；When power conversion unit output voltage gradually increases
When greatly to rated voltage, i.e. Uco=Uce, device output voltage Uo has reached the requirement of synchronic command Cs.Through said process
Afterwards, a single phase power supply device starts to provide stable single phase industrial frequence voltage to feed gauze and return wire, into running status.
Separate unit single phase power supply device output voltage Uo, curve of output Co and synchronic command Cs relation it is as shown in Figure 5.With state
As a example by the conventional power supply system of interior electric railway is 27.5kV/50Hz, the virtual value of supply voltage in synchronic command, is contained
The synchronizing information of 0 ° of 27.5kV, frequency 50Hz and initial phase, in conjunction with pressing time T4 after master controller reception synchronic command
Curve of output Co is generated, and controls single phase power supply device and maintain 0 ° of initial phase, fixed frequency 50Hz (i.e. cycle of each cycle
For 20ms), step up output voltage (virtual value has reached 27.5kV in 1000ms) to reach the requirement of synchronic command.
In external electric railway, situation of the common power frequency for 60Hz, in order to adapt to this power supply system, it is only necessary to same by what is issued
Frequency in step instruction is changed to 60Hz, and remaining process is consistent.
S3. every master controller measures the single phase power supply by the output voltage sensor of affiliated single phase power supply matched with devices
The output voltage Uo of device, is calculated virtual value, frequency and the phase place of output voltage, and is contrasted with synchronic command Cs item by item,
Then output voltage Uo is finely adjusted if any deviation.Virtual value, frequency and phase place when output voltage is consistent with synchronic command Cs
When, then signal is completed to power supply isochronous controller feedback synchronization.Now all power supplies are interval powered, and supply voltage have
The equal Complete Synchronization of valid value, frequency and phase place.Now contact is not completed on each power supply interval, each power supply interval is by corresponding
Single phase power supply device is powered, as shown in Figure 6.
S4. isochronous controller of powering is received after whole single phase power supply device feedback synchronizations complete signal, control interval connection
Network switch is closed successively, and interval feed line of powering all is connected, and whole traction power set input is finished, whole single phase power supplies
Device is presented form in parallel, is operated in unified voltage level, can provide the stable, electric energy without interruption for train.
After interval interconnection switch closure, each power supply interval completes contact, becomes unified power supply entirety, each single-phase confession
Electric installation becomes the parallel operation power supply of synchronous working, as shown in Figure 7.
S5. in order to ensure the reliability of whole tractive power supply system, it is necessary to consider power conversion unit failure even certain
After single phase power supply plant failure, the situation that whole system can be continued to run with：
S5.1 power conversion unit failures
Once there is the situation that a certain group of vice-side winding or some power conversion unit break down, master controller is then
Bypass instruction is issued to the unit panel of abort situation by optical fiber, the conducting of order bypass circuit, rectification circuit quit work,
So as to the power conversion unit by abort situation cuts off；Master controller is counted again according to remaining power conversion unit quantity simultaneously
Pwm signal is calculated, remaining power conversion unit is controlled and is improved output voltage, to maintain the output voltage of the single phase power supply device
The stable level required in synchronic command Cs.
For example in running, the first power conversion unit breaks down, and that master controller is then by sending instructions under optical fiber
So that the rectification circuit of the first power conversion unit quits work, bypass contactor is closed at, will be the fault power conversion single
Unit's excision；Synchronization control is issued to the pwm pulse signal of remaining P-1 power conversion unit, makes dump power converting unit
Output voltage is changed into 27.5kV/ (P-1), maintains the level of single phase power supply device overall output voltage.
S5.2 single phase power supply plant failures
When certain single phase power supply device orderly closedown or disorderly closedown, its master controller stops issuing pwm signal,
Order unit panel stops rectification circuit work, disconnects bypass circuit, the first output switch of control, the second output switch and defeated
Enter to switch all off, the single phase power supply device major loop is fully disconnected with high voltage power supply, transmission network and return wire, originally this
The corresponding power supply of device is interval to obtain electric energy from adjacent interval by interval interconnection switch, maintains interval continued power.Certain list
After phase electric supply installation failure is exited, the state of traction power supply net is as shown in Figure 8.
This utility model electric railway traction power supply system is additionally provided with ice-melt function.The ice-melt function of system is divided into two kinds
Pattern：DC ice melting with exchange ice-melt, the first step for starting ice-melt function is identical with conventional electron, i.e. system standby, Ran Houshe
Ice-melt mode and ice melting current Irb are put, if selecting AC mode to also need to arrange ice-melt frequency Frb, is opened after parameter setting is good
Dynamic single phase power supply device, master controller control single phase power supply device as steps described below and carry out ice-melt.
(1) DC ice melting
S11. master controller issues bypass instruction by optical fiber, and the bypass circuit of whole power conversion units is connected, this
When the output of single phase power supply device voltage be zero；
S12. by sending instructions under optical fiber, the bypass circuit for controlling the first power conversion unit disconnects master controller, while
The pwm signal of a full modulation is issued, the unit is controlled and is exported its direct-current working volts Udc2, remaining element is failure to actuate, now
The DC voltage of single phase power supply device output is Udc2, and Traction networks and return current rail start to produce DC current；
S13. according to process described in S12 steps, dump power converting unit is controlled successively and exports its direct-current working volts, had
J power conversion unit work, then single phase power supply device output DC voltage is j*Udc2, with the increase of j, the direct current of generation
Electric current will move closer to setting value Irb；
S14. master controller detects the size of output current by output current sensor, if starting j power conversion
During unit, DC current is not up to setting value, and starts j+1 more than if setting value, then only start j, it is ensured that single-phase confession
The electric current of electric installation output is less than setting value.
Fig. 9 show under DC ice melting pattern put into j power conversion unit, bypass P-j power conversion unit etc.
Value circuit, wherein Rgr-dc are the equivalent d.c. resistance of ice-melt interval contact net and return current rail, and Igr-dc is to flow through ice-melt interval
DC current, Igr-dc≤Irb.
(2) exchange ice-melt
S21. ice-melt frequency of the master controller according to setting, starts from scratch and gradually increases the modulation depth for calculating pwm signal,
Pwm signal is handed down to by whole unit panels by optical fiber；
S22., after unit panel receives pwm signal, the output voltage of control power conversion unit is started from scratch
Greatly, thus single phase power supply device to export frequency be Fbr, the alternating voltage that virtual value gradually increases；
S23. as single phase power supply device output voltage virtual value gradually increases, flow through the electric current of Traction networks and return current rail
Beginning increases therewith, when master controller detects output current has reached setting value Irb, then stops increase modulation depth, dimension
Current stabilization is held in Irb.
Figure 10 show the equivalent circuit under exchange ice-melt mode, and wherein Rgr-ac, Lgr-ac is ice-melt interval contact net
With the equivalent AC resistance and equivalent inductance of return current rail, Igr-ac is to flow through the interval alternating current of ice-melt, Igr-ac=Irb.
Ice-melt mode is exchanged generally preferably, because the kelvin effect of alternating current can make the equivalent of same section of ice-melt interval
Resistance is bigger, and better heating ice-melt effect can be reached in the case of same current virtual value.In order to ensure contact net
Obvious with the kelvin effect of return current rail, set ice-melt frequency is generally individually more than few kilohertz (kHz).
As described above, just can preferably realize this utility model.Above-described embodiment is this utility model preferably embodiment party
Formula, but embodiment of the present utility model be not restricted to the described embodiments, it is other any without departing from of the present utility model
Spirit and the change, modification, replacement made under principle, combine, simplify, should be equivalent substitute mode, be included in
Within protection domain of the present utility model.
Claims (7)
1. single phase power supply device, it is characterised in that including multiwinding transformer, some power conversion units and master controller；Institute
Stating multiwinding transformer includes a high pressure primary side winding and multiple low voltage secondary windings, and the group number of vice-side winding is P, and per group secondary
Side winding is K to the no-load voltage ratio of primary side winding, the connection corresponding with the input of a power conversion unit of every group of vice-side winding；If
The outfan of dry power conversion unit is sequentially connected, and draws the single phase power supply dress from the L arms of first power conversion unit
The first outfan put, draws the second outfan of the single phase power supply device from the R arms of P power conversion unit；It is described
Master controller is connected with each power conversion unit, controls the operation of each power conversion unit.
2. single phase power supply device according to claim 1, it is characterised in that the power conversion unit includes rectified current
Road, DC capacitor, inverter circuit, bypass circuit and unit panel, the exchange end of rectification circuit is the defeated of power conversion unit
Enter end, the DC terminal of rectification circuit, the DC terminal of inverter circuit are connected according to positive-negative polarity correspondence with DC capacitor, inverter circuit
Exchange end for power conversion unit outfan, bypass circuit is connected in parallel on the outfan of power conversion unit；Unit panel
It is connected with master controller, rectification circuit, inverter circuit and bypass circuit respectively, receives the instruction control power conversion of master controller
All parts work in unit.
3. single phase power supply device according to claim 1, it is characterised in that the single phase power supply device also includes：For
The input current sensor of collection single phase power supply device input current, its former limit are connected with multiwinding transformer primary side winding；With
In the output voltage sensor of collection single phase power supply device output voltage, its former limit is connected in parallel on the L of first power conversion unit
Between the R arms of arm and P power conversion unit；And the output current for gathering single phase power supply device output current is sensed
Device, its former limit are connected with the L arms of first power conversion unit；The input current sensor, output voltage sensor and output
Current sensor is connected with the master controller respectively.
4. single phase power supply device according to claim 1, it is characterised in that the single phase power supply device also includes being connected on
First output switch of the first outfan, and it is connected on the second output switch of the second outfan.
5. single phase power supply device according to claim 1, it is characterised in that the single phase power supply device is also opened including input
Close；The end of incoming cables of the input switch is connected with three-phase high-voltage power supply, the primary side winding of leading-out terminal and the multiwinding transformer
It is connected.
6. single phase power supply device according to claim 1, it is characterised in that the single phase power supply device is also opened including charging
Close and charging resistor, charge switch be connected to after connecting with charging resistor the former limit of three-phase high-voltage power supply and multiwinding transformer around
Between group.
7. a kind of electric railway traction power supply system, it is characterised in that including power supply isochronous controller, some claim 1-
Single phase power supply device and some interval interconnection switches any one of 6；It is described power supply isochronous controller respectively with each list
Phase electric supply installation and each interval interconnection switch connection；The single phase power supply device is for being converted to single-phase voltage by three-phase voltage
Backward train power supply, the first outfan and feed line connection, the second outfan and return wire connection；The interval interconnection switch with
The interval feed line connection of two neighboring power supply；The power supply isochronous controller is exported to the master controller of each single phase power supply device
Synchronic command and operating instruction, the output electricity of master controller single phase power supply device according to synchronic command and belonging to operating instruction control
Pressure reaches the requirement of synchronic command.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620944968.4U CN206049416U (en) | 2016-08-25 | 2016-08-25 | Single phase power supply device, electric railway traction power supply system |
Applications Claiming Priority (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106240405A (en) * | 2016-08-25 | 2016-12-21 | 广州智光电气股份有限公司 | Single phase power supply device, electric railway traction power supply system and control method thereof |
| CN113659447A (en) * | 2021-07-20 | 2021-11-16 | 许继集团有限公司 | Method for automatically correcting voltage sampling polarity of series side of in-phase power supply device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106240405A (en) * | 2016-08-25 | 2016-12-21 | 广州智光电气股份有限公司 | Single phase power supply device, electric railway traction power supply system and control method thereof |
| CN113659447A (en) * | 2021-07-20 | 2021-11-16 | 许继集团有限公司 | Method for automatically correcting voltage sampling polarity of series side of in-phase power supply device |
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