CN103427608B - A kind of mobile high-power alternating current-direct current hybrid power supply device - Google Patents
A kind of mobile high-power alternating current-direct current hybrid power supply device Download PDFInfo
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Abstract
The invention discloses a kind of mobile high-power alternating current-direct current hybrid power supply device, comprising: vehicular platform, control system, and even number set current transformer group more than two.Current transformer group comprises plural converter cell, and converter cell adopts input side parallel connection, outlet side series system connects, then adopts serial or parallel connection mode to realize alternating current-direct current output by current transformer group.Control system is connected with the converter cell of current transformer group, and control system realization is to the control of converter cell and monitoring.Control system and even number set current transformer more than two assembling are loaded on vehicular platform, realize movable type alternating-direct current power.The present invention, by the flexible conversion to current transformer group series and parallel relation, realizes the output of the interchange of hybrid power supply device, direct voltage.Current transformer group and control system are dragged by automobile, maneuverability, are suitable for the load of all kinds of resistance sense class, and the two-way flow achieving energy controls, and can be widely used in all kinds of load object.
Description
Technical field
The present invention relates to a kind of unsteady flow electric supply installation, especially relate to a kind of vehicle-mounted removable high-power alternating current-direct current hybrid power supply device being applied to electric and electronic technical field, be mainly used in for power inconvenience engineering site or other places high-quality, powerful alternating current-direct current electric power supply are provided.
Background technology
Existing current transformer adopts half control or all-controlled semiconductor device regulate electric energy and convert mostly, but limit by himself characteristic and application occasion, such current transformer mostly is static, fixed power supply, be arranged on indoor, and need specific power transformer to power to it, extra cooling device dispels the heat to it, greatly limit its application scenario.Other portable power supplys, as the current converter finite capacity on the vehicles such as electric automobile and cannot realize multiple-variable flow device site of deployment implement also, series connection export, act on very limited.Being applied in of the portable power supply of Large Copacity, high-power, high power supply quality is current or blank, the therefore necessary research and development carrying out this technical field.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of mobile high-power alternating current-direct current hybrid power supply device, by the flexible conversion to current transformer series and parallel relation, realize the output of the interchange of hybrid power supply device, direct voltage, the device of hybrid power supply is simultaneously dragged by automobile, and maneuverability, is suitable for the load of all kinds of resistance sense class, the two-way flow achieving energy controls, and can be widely used in all kinds of load object.
In order to realize foregoing invention object, the present invention specifically provides a kind of technic relization scheme of mobile high-power alternating current-direct current hybrid power supply device, a kind of mobile high-power alternating current-direct current hybrid power supply device, comprising: vehicular platform, control system, and even number set current transformer group more than two.Described current transformer group comprises plural converter cell, and described converter cell adopts input side parallel connection, outlet side series system connects, then adopts serial or parallel connection mode to realize alternating current-direct current output by described current transformer group.Described control system is connected with the converter cell of described current transformer group, and described control system realization is to the control of described converter cell and monitoring.Described control system and even number set current transformer more than two are loaded on described vehicular platform, realize movable type alternating-direct current power.
Preferably, described converter cell comprises current transformer, DC chopped-wave voltage-regulating circuit, intermediate DC link and output filter circuit, and described current transformer, intermediate DC link, DC chopped-wave voltage-regulating circuit, output filter circuit are connected successively.Described current transformer carries out rectification to input signal, and described intermediate DC link is the middle dc voltage of described DC chopped-wave voltage-regulating circuit with stable, and described DC chopped-wave voltage-regulating circuit carries out chopper control process to middle dc voltage.Described DC chopped-wave voltage-regulating circuit comprises copped wave pipe and diode, described copped wave pipe and diodes in parallel between described intermediate DC link and output filter circuit, from the direct voltage of the two ends stable output of described diode.
Preferably, described control system comprises converter cell controller, top level control device and central controller, and described converter cell controller is connected with corresponding converter cell, and the impulse commutation and the chopping wave constant current that realize single converter cell control.Described top level control device is connected with described converter cell controller, realizes the on off control of converter cell controller, phase sequence setting, detection failure information, relay logical control and defencive function.Described top level control device receives mode of operation from described central controller and control model information simultaneously, calculates and also sends control command to described converter cell controller.Described top level control device also with power-management centre; and described central controller is connected, the start-stop that described central controller completes described mobile high-power alternating current-direct current hybrid power supply device controls, with the communication of described power-management centre, sends mode of operation and control model information, the monitoring carrying out key waveforms and system protection function to described top level control device.
Preferably, described current transformer group also comprises converter cell, high-voltage switch gear combination and transformer, described high-voltage switch gear combines one end and connects input 35KV high voltage source, the described high-voltage switch gear combination other end is connected with the armature winding of transformer, and the secondary winding of described transformer is connected with the input of described converter cell.Described converter cell adopts the connected mode that input side is in parallel, outlet side is connected to form controllable current transformer unit, described controllable current transformer unit be input as multi winding transformer input, the input side of described converter cell is in parallel by the secondary winding of described transformer, the output of described converter cell adopts cascaded-output form, and pass through the DC chopped-wave voltage-regulating control circui output current of described converter cell, then be concatenated into next described converter cell again, realize high voltage by the superposition of described converter cell and export.
Preferably, mobile high-power alternating current-direct current hybrid power supply device comprises the first power unit cabinet, the second power unit cabinet, the first transformer case, the second transformer case, switch cubicle and heat exchanger cabinet further.Described even number set current transformer group more than two and the control system corresponding with it are divided into two groups, be separately positioned in the first power unit cabinet and the second power unit cabinet, described first power unit cabinet and the second power unit cabinet are with water-cooling system, the transformer corresponding with described current transformer group is separately positioned in the first transformer case and the second transformer case, and described high-voltage switch gear combination is arranged in switch cubicle.Described first transformer case, the first power unit cabinet, the second transformer case, the second power unit cabinet, switch cubicle and heat exchanger cabinet are all arranged on described vehicular platform.
Preferably, described transformer adopts dry type transformer structure.
Preferably, between described converter cell controller, between described converter cell controller and described top level control device, fiber-optic signal is adopted to transmit.
Preferably, communicate with adopting RS485 bus between described central controller, power-management centre at described top level control device.
Preferably, described mobile high-power alternating current-direct current hybrid power supply device comprises the first current transformer group and the second current transformer group.Described first current transformer group and its control system, described second current transformer group and its control system are loaded on respective vehicular platform respectively.Described first current transformer group and the second current transformer group respectively comprise two current transformer groups, described first current transformer group is transmitting terminal current transformer, described second current transformer group is receiving end current transformer, and described first current transformer group and the second current transformer group two current transformer group outputs are separately total to DC side between two and are connected.The corresponding current transformer of the controllable current transformer unit of described first current transformer group and described second current transformer group forms back-to-back double-PWM frequency converter between any two, and the interchange realizing described mobile high-power alternating current-direct current hybrid power supply device exports.
Preferably, described mobile high-power alternating current-direct current hybrid power supply device comprises the first current transformer group and the second current transformer group.Described first current transformer group and its control system, described second current transformer group and its control system are loaded on respective vehicular platform respectively.Described first current transformer group and the second current transformer group respectively comprise two current transformer groups, four current transformer group outputs of described first current transformer group and the second current transformer group are in parallel, the current transformer of described converter cell works in impulse commutation state, realizes up-flow from zero and obtain galvanic current pressure exporting.
By implementing the technical scheme of a kind of mobile high-power alternating current-direct current hybrid power supply device that the invention described above provides, there is following technique effect:
(1) the present invention is by realizing the output of interchange, direct voltage to the series and parallel between current transformer, capacity can reach tens of MW(by selected IGBT device grade, and the current transformer quantity of converter cell series and parallel determines), direct voltage can reach 20kV, and alternating voltage can reach 35kV;
(2) the converter cell electric current of current transformer of the present invention can from turning off, device can be operated in the mode of passive inverter, when device is when as AC applications, do not need additional commutation voltage, thus the converter equipment overcoming tradition application Design of Thyristor must be linked in the essential defect of active network, can carry out power transmission for remote island load;
(3) the converter cell ac-side current of current transformer of the present invention can control, therefore the capacity of short circuit of device can not be increased, after the new electric supply installation of increase enters system, protective device in original electric power system is without the need to again adjusting, this advantage when being applied to rescue and relief work (as temporary power when DC power supply device as former in mine tramcar breaks down, for DC ice melting etc. when there is grid power transmission circuit ice damage winter), needing under the occasion of racing against time, its advantage is particularly evident;
(4) converter cell of current transformer of the present invention adopts IGBT impulse commutation technology, and its harmonic wave produced greatly weakens, and no matter be as AC applications or as DC application, its side harmonics index all meets Standard;
(5) the advanced electromagnetic compatibility technologies such as high-low pressure is isolated, flashlight electric isolution are adopted to design between control system of the present invention and current transformer, all with Fiber connection between high-low pressure, electric supply installation adopts high pressure way to take power, all pulses and signal carry out through Phototube Coupling and conversion, greatly reduce electromagnetic interference, this device still can reliable and stablely be run under severe electromagnetic environment;
(6) the dragging movable car of electric supply installation employing of the present invention without the need to auxiliary equipment such as cranes, the design of point car combination, both interchange demand had been met, also direct current demand can be met, the movement of quick emergency can be realized simultaneously, mobility is good, flexibly and easily, be particularly useful for required in temporary power, rescue and relief work situation faced by many, the occasion it is pressed for time of load type.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the circuit topological structure figure of converter cell in a kind of embodiment of mobile high-power alternating current-direct current hybrid power supply device of the present invention;
Fig. 2 is the circuit topological structure figure of current transformer in a kind of embodiment of mobile high-power alternating current-direct current hybrid power supply device of the present invention;
Fig. 3 is the system architecture diagram of control system in a kind of embodiment of mobile high-power alternating current-direct current hybrid power supply device of the present invention;
Fig. 4 is the structural representation front view that a kind of embodiment of mobile high-power alternating current-direct current hybrid power supply device of the present invention is arranged on onboard system;
Fig. 5 is the structural representation vertical view that a kind of embodiment of mobile high-power alternating current-direct current hybrid power supply device of the present invention is arranged on onboard system;
Fig. 6 is the perspective view that a kind of embodiment of mobile high-power alternating current-direct current hybrid power supply device of the present invention is arranged on onboard system;
Fig. 7 is the DC converting main circuit topological structure figure that a kind of embodiment of mobile high-power alternating current-direct current hybrid power supply device of the present invention adopts four current transformer compositions;
Fig. 8 is the exchange conversion main circuit topological structure figure that the another kind of embodiment of mobile high-power alternating current-direct current hybrid power supply device of the present invention adopts four current transformer compositions;
In figure: 1-converter cell, 2-high-voltage switch gear combines, 3-current transformer, 4-DC chopped-wave voltage-regulating circuit, 5-intermediate DC link, 6-output filter circuit, 7-converter cell controller, 8-top level control device, 9-central controller, 10-power-management centre, 11-first transformer case, 12-first power unit cabinet, 13-second transformer case, 14-second power unit cabinet, 15-switch cubicle, 16-heat exchanger cabinet, 17-first current transformer group, 18-second current transformer group, 19-current transformer group, 20-vehicular platform, 21-controllable current transformer unit, 30-control system.
Embodiment
For the purpose of quoting and know, by the technical term hereinafter used, write a Chinese character in simplified form or abridge and be described below:
IGBT:Insulated Gate Bipolar Transistor, insulated gate bipolar transistor, by BJT(double pole triode) and MOS(insulating gate type field effect tube) the compound full-control type voltage driven type power semiconductor that forms;
RS485: be under the jurisdiction of OSI(inventionthe open systems interconnection reference model) electrical characteristic of model physical layer is defined as 2 lines, half-duplex, the standard of multi-point;
THD:Total Harmonic Distortion, the abbreviation of total harmonic distortion, is an index of signal harmonic distortion, is expressed as the ratio of all harmonic content power sums and fundamental frequency signal power;
PWM:Pulse Width Modulation, the abbreviation of pulse width modulation.
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in accompanying drawing 1 to accompanying drawing 8, give the specific embodiment of a kind of mobile high-power alternating current-direct current of the present invention hybrid power supply device, below in conjunction with the drawings and specific embodiments, the invention will be further described.
An embodiment for mobile high-power alternating current-direct current hybrid power supply device, comprising: vehicular platform 20, control system 30, and even number set current transformer group 19 more than two.Current transformer group 19 comprises plural converter cell 1, and converter cell 1 adopts input side parallel connection, outlet side series system connects, then adopts serial or parallel connection mode to realize alternating current-direct current output by current transformer group 19.Control system 30 is connected with the converter cell 1 of current transformer group 19, and control system 30 realizes control to converter cell 1 and monitoring.Control system 30 and even number set current transformer group 19 more than two are loaded on vehicular platform 20, realize movable type alternating-direct current power.
As shown in Figure 1, converter cell 1 comprises current transformer 3, DC chopped-wave voltage-regulating circuit 4, intermediate DC link 5 and output filter circuit 6 further.Current transformer 3, intermediate DC link 5, DC chopped-wave voltage-regulating circuit 4, output filter circuit 6 are connected successively.Current transformer 3 pairs of input signals carry out rectification, and intermediate DC link 5 provides stable middle dc voltage for DC chopped-wave voltage-regulating circuit 4, and DC chopped-wave voltage-regulating circuit 4 pairs of middle dc voltages carry out chopper control process.DC chopped-wave voltage-regulating circuit 4 comprises copped wave pipe T1 and diode D1, and copped wave pipe T1 and diode D1 is connected in parallel between described intermediate DC link 5 and output filter circuit 6, from the two ends D of diode D1 and the direct voltage of Ud-stable output.
As shown in Figure 2, current transformer group 19 comprises converter cell 1, high-voltage switch gear combination 2 and transformer TM further.High-voltage switch gear combination 2 comprises high voltage connector combination KM1, primary cut-out combination KM2 and resistance combination R.High-voltage switch gear combines 2 one end and connects input 35KV high voltage source, and high-voltage switch gear combines 2 other ends and is connected with the armature winding of transformer TM, and the secondary winding of transformer TM is connected with the input of converter cell 1.Converter cell 1 adopts the connected mode that input side is in parallel, outlet side is connected to form controllable current transformer unit 21, controllable current transformer unit 21 be input as multi winding transformer input, the input side of converter cell 1 is in parallel by the secondary winding of transformer TM, the output of converter cell 1 adopts cascaded-output form, and control output current by the DC chopped-wave voltage-regulating circuit 4 of converter cell 1, then be concatenated into next converter cell 1 again, realize high voltage by the superposition of converter cell 1 and export.Converter cell 1 is by port D and Ud-output voltage, and output is connected with voltage transformer TV00, TV01 and TV02, and current transformer TA0, exports finally by by circuit breaker Q S1.As a kind of typical execution mode of the present invention, controllable current transformer unit 21 comprises 6 converter cells 1.Single controllable current transformer unit 21 adopts modularized design, and combination flexibly, is conveniently applied.Converter cell 1 adopts current transformer 3+ DC chopped-wave voltage-regulating circuit 4, and output current can regulate continuously, and the current harmonic content of input is few, inputs idle low, does not need high-power filter.As a kind of typical embodiment of the present invention, the switching device in current transformer 3 adopts IGBT power device further.The mobile high-power alternating current-direct current hybrid power supply device that the specific embodiment of the invention describes adopts controllable current transformer unit 21 cascade mode, and IGBT does not need series connection, and application of installation technology maturation, reliability is high.The mobile high-power alternating current-direct current hybrid power supply device that the specific embodiment of the invention describes adopts dry-type transformer, and more adapt to the demand of movement, maintenance cost is lower.
As shown in Figure 3, control system 30 comprises converter cell controller 7, top level control device 8 and central controller 9 further, converter cell controller 7 is connected with corresponding converter cell 1, and the impulse commutation and the chopping wave constant current that realize single converter cell 1 control.Top level control device 8 is connected with converter cell controller 7, realizes the on off control of 6 corresponding converter cell controllers 7, phase sequence setting, detection failure information, relay logical control and defencive function.Top level control device 8 receives mode of operation from central controller 9 and control model information, calculates and also sends control command to converter cell controller 7.Top level control device 8 also with power-management centre 10; and central controller 9 is connected, the start-stop that central controller 9 completes mobile high-power alternating current-direct current hybrid power supply device controls, with the communication of power-management centre 10, send mode of operation and control model information, the monitoring carrying out key waveforms and system protection function to upper strata controller 8.In the technical scheme that the specific embodiment of the invention describes, control system 30 adopts converter cell controller 7+ top level control device 8+ central controller 9, secondary singal for controllable current transformer unit 21 is transmitted, adopt current transformer group 19 main circuit and the full isolation mode of control system 30, utilize multi-stage fiber to carry out transmission and the process of secondary singal.
As shown in accompanying drawing 4,5 and 6, mobile high-power alternating current-direct current hybrid power supply device also comprises the first transformer case 11, first power unit cabinet 12, second transformer case 13, second power unit cabinet 14, switch cubicle 15 and heat exchanger cabinet 16.Even number set current transformer group 19 more than two and the control system 30 corresponding with it are divided into two groups, be separately positioned in the first power unit cabinet 12 and the second power unit cabinet 14, first power unit cabinet 12 and the second power unit cabinet 14 are with water-cooling system, the transformer TM corresponding with current transformer 19 is separately positioned in the first transformer case 11 and the second transformer case 13, and high-voltage switch gear combination 2 is arranged in switch cubicle 15.First transformer case 11, first power unit cabinet 12, second transformer case 13, second power unit cabinet 14, switch cubicle 15 and heat exchanger cabinet 16 are all arranged on vehicular platform 20.The mobile high-power alternating current-direct current hybrid power supply device that the specific embodiment of the invention describes can after vehicle-mounted transport to scene, by the serial or parallel connection of each controllable current transformer unit 21, reach the ability improving overall output voltage or electric current, thus raising output capacity, the exportable 5MVA of bicycle controllable current transformer unit 21.
Transformer TM adopts dry type transformer structure.Between converter cell controller 7, between converter cell controller 7 and top level control device 8, fiber-optic signal is adopted to transmit.RS485 bus is adopted to communicate at top level control device 8 with between central controller 9, power-management centre 10.The mobile high-power alternating current-direct current hybrid power supply device that the specific embodiment of the invention describes have employed high_voltage isolation, controls the electromagnetic compatibility technology design of the advanced persons such as opto-electronic conversion, all Fiber connection is adopted between high-low pressure, control power acquisition high pressure way to take power in first power unit cabinet 12 and the second power unit cabinet 14, all pulses and signal carry out through Phototube Coupling and conversion, greatly reduce electromagnetic interference, mobile high-power alternating current-direct current hybrid power supply device of the present invention still can reliablely and stablely be run under severe electromagnetic environment.
As shown in Figure 6, the mobile high-power alternating current-direct current hybrid power supply device that the specific embodiment of the invention describes can be loaded on automobile, can movement flexibly, meets different requirement of engineering.Hybrid power supply device can as required, the power of alterating and direct current hurrying to various places to provide instant in vehicle-mounted mode flexibly, and the AC and DC pattern of out-put supply and capacity can allocation processing flexibly.
As shown in Figure 7, as a kind of typical execution mode of the present invention, mobile high-power alternating current-direct current hybrid power supply device comprises the first current transformer group 17 and the second current transformer group 18.First current transformer group 17 is loaded on respective vehicular platform 20 with its control system 30 respectively with its control system 30, second current transformer group 18.First current transformer group 17 and the second current transformer group 18 are respectively loaded by a vehicular platform 20, and it is transmitting terminal current transformer that the first current transformer group 17 and the second current transformer group 18 respectively comprise two current transformers 19, first current transformer group 17, and the second current transformer group 18 is receiving end current transformer.Respective two the current transformer groups 19 of first current transformer group 17 and the second current transformer group 18 between two altogether DC side is connected, realize the interchange output of mobile high-power alternating current-direct current hybrid power supply device.Now, four controllable current transformer unit 21 DC side connection i.e. interchange outputs of formation mobile high-power alternating current-direct current hybrid power supply device altogether between two, output AC voltage maximum 35kV, the maximum 200A of ac output current.The corresponding current transformer 3 of the controllable current transformer unit 21 of the first current transformer group 17 and the second current transformer group 18 forms back-to-back double-PWM frequency converter between any two, and adopts dual PWM-VSI mode, and rated power is stablized, and controls stable.After tested, output dc voltage is 10500V, fluctuation≤± 80V, and power transmission efficiency is 94%, power factor (PF) up to 99%, input voltage THD(total harmonic distortion)≤3.96%.
As shown in Figure 8, as the another kind of typical execution mode of the present invention, mobile high-power alternating current-direct current hybrid power supply device comprises the first current transformer group 17 and the second current transformer group 18.First current transformer group 17 is loaded on respective vehicular platform 20 with its control system 30 respectively with its control system 30, second current transformer group 18.Four current transformer group 19 outputs that first current transformer group 17 and the second current transformer group 18 respectively comprise two current transformer groups 19, first current transformer group 17 and the second current transformer group 18 are in parallel.Now, the current transformer 3 of the controllable current transformer unit 21 of the first current transformer group 17 and the second current transformer group 18 is all operated in pwm pulse rectification state.The controllable current transformer unit 21 of the first current transformer group 17 and the second current transformer group 18 forms the rectifier output of four groups of parallel connections, and converter cell current transformer realizes up-flow from zero and obtain galvanic current pressure exporting.Four controllable current transformer unit 21 Parallel opertation, exportable 5kV direct voltage or maximum output 4000A electric current after combination.Current transformer 3 carries out rectification by adopting IGBT impulse commutation technology, can obtain stable output dc voltage.After tested, input side full load power factor is 0.967, and input side voltage harmonic content is 1.5%, can meet the requirement of GB well.
The mobile high-power alternating current-direct current hybrid power supply device that the specific embodiment of the invention describes is set to one mobile power transmission vehicle flexibly, changed by the series and parallel relation between simply arranging current transformer the switch on transmission of electricity vehicle, various combination operational mode simultaneously by changing current transformer 3 realizes the flexible output of interchange, direct voltage, capacity can reach tens of MW(by selected IGBT device grade, and the current transformer quantity of converter cell series and parallel determines), direct voltage can reach 20kV, and alternating voltage can reach 35kV.The electric current of the converter cell 1 of current transformer group 19 can from turning off, device can be operated in the mode of passive inverter, when device is when as AC applications, do not need additional commutation voltage, thus the converter equipment overcoming tradition application Design of Thyristor must be linked in the essential defect of active network, can carry out power transmission for remote island load.Direct current by unit cascade circuit topology, creationaryly exports and exchanges output function and integrate by the present invention, gets final product practical function conversion, achieve the two-way flow control technology of energy, reach the object controlled back-to-back by simple change.In the present invention, the ac-side current of the converter cell 1 of current transformer group 19 can control, and therefore can not increase the capacity of short circuit of device, and after the new electric supply installation of increase enters system, the protective device in original electric power system is without the need to again adjusting.This advantage when being applied to rescue and relief work (as temporary power when DC power supply device as former in mine tramcar breaks down, for DC ice melting etc. when there is grid power transmission circuit ice damage winter), needing under the occasion of racing against time, its advantage is particularly evident.The converter cell 1 of current transformer group 19 adopts IGBT impulse commutation technology, and its harmonic wave produced greatly weakens, and no matter be as AC applications or as DC application, its side harmonics index all meets Standard.The advanced electromagnetic compatibility technologies such as high-low pressure is isolated, flashlight electric isolution are adopted to design between control system 30 of the present invention and current transformer group 19, all with Fiber connection between high-low pressure, electric supply installation adopts high pressure way to take power, all pulses and signal carry out through Phototube Coupling and conversion, greatly reduce electromagnetic interference, this device still can reliable and stablely be run under severe electromagnetic environment.The dragging movable car of electric supply installation employing of the present invention without the need to auxiliary equipment such as cranes, the design of point car combination, both interchange demand had been met, also direct current demand can be met, the movement of quick emergency can be realized simultaneously, mobility is good, flexibly and easily, be particularly useful for required in temporary power, rescue and relief work situation faced by many, the occasion it is pressed for time of load type.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
The above is only preferred embodiment of the present invention, not does any pro forma restriction to the present invention.Although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention.Any those of ordinary skill in the art, when not departing from Spirit Essence of the present invention and technical scheme, the Method and Technology content of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solution of the present invention, or be revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent replacement, equivalence change and modification, all still belongs in the scope of technical solution of the present invention protection.
Claims (9)
1. a mobile high-power alternating current-direct current hybrid power supply device, it is characterized in that, comprise: vehicular platform (20), control system (30), and even number set current transformer group (19) more than two, described current transformer group (19) comprises plural converter cell (1), described converter cell (1) adopts input side parallel connection, outlet side series system connects, then adopts serial or parallel connection mode to realize alternating current-direct current output by described current transformer group (19); Described control system (30) is connected with the converter cell (1) of described current transformer group (19), and described control system (30) realization is to the control of described converter cell (1) and monitoring; Described control system (30) and even number set current transformer group (19) more than two are loaded on described vehicular platform (20), realize movable type alternating-direct current power; Described converter cell (1) comprises current transformer (3), DC chopped-wave voltage-regulating circuit (4), intermediate DC link (5) and output filter circuit (6), and described current transformer (3), intermediate DC link (5), DC chopped-wave voltage-regulating circuit (4), output filter circuit (6) are connected successively; Described current transformer (3) carries out rectification to input signal, described intermediate DC link (5) provides stable middle dc voltage for described DC chopped-wave voltage-regulating circuit (4), and described DC chopped-wave voltage-regulating circuit (4) carries out chopper control process to middle dc voltage; Described DC chopped-wave voltage-regulating circuit (4) comprises copped wave pipe (T1) and the diode (D1) of series connection mutually, the emitter of described copped wave pipe (T1) is connected with the negative electrode of described diode (D1), described copped wave pipe (T1) is in parallel with the output of described intermediate DC link (5) with the series circuit of diode (D1), described copped wave pipe (T1) is simultaneously in parallel with the input of described output filter circuit (6) with the series circuit of diode (D1), from the direct voltage of the two ends stable output of described diode (D1).
2. a kind of mobile high-power alternating current-direct current hybrid power supply device according to claim 1, it is characterized in that: described control system (30) comprises converter cell controller (7), top level control device (8) and central controller (9), described converter cell controller (7) is connected with corresponding converter cell (1), and the impulse commutation and the chopping wave constant current that realize single converter cell (1) control; Described top level control device (8) is connected with described converter cell controller (7), realize the on off control of converter cell controller (7), phase sequence setting, detection failure information, relay logical control and defencive function, described top level control device (8) receives mode of operation from described central controller (9) and control model information, calculates and also sends control command to described converter cell controller (7); Described top level control device (8) also with power-management centre (10); and described central controller (9) is connected, the start-stop that described central controller (9) completes described mobile high-power alternating current-direct current hybrid power supply device controls, with the communication of described power-management centre (10), sends mode of operation and control model information, the monitoring carrying out key waveforms and system protection function to described top level control device (8).
3. a kind of mobile high-power alternating current-direct current hybrid power supply device according to claim 1 and 2, it is characterized in that: described current transformer group (19) also comprises high-voltage switch gear combination (2) and transformer (TM), described high-voltage switch gear combination (2) one end connects input 35KV high voltage source, described high-voltage switch gear combination (2) other end is connected with the armature winding of transformer (TM), and the secondary winding of described transformer (TM) is connected with the input of described converter cell (1), described converter cell (1) adopts input side in parallel, the connected mode of outlet side series connection forms controllable current transformer unit (21), described controllable current transformer unit (21) be input as multi winding transformer input, the input side of described converter cell (1) is in parallel by the secondary winding of described transformer (TM), the output of described converter cell (1) adopts cascaded-output form, and control output current by the DC chopped-wave voltage-regulating circuit (4) of described converter cell (1), then be concatenated into next described converter cell (1) again, realize high voltage by the superposition of described converter cell (1) to export.
4. a kind of mobile high-power alternating current-direct current hybrid power supply device according to claim 3, is characterized in that: mobile high-power alternating current-direct current hybrid power supply device comprises the first power unit cabinet (12), the second power unit cabinet (14), the first transformer case (11), the second transformer case (13), switch cubicle (15) and heat exchanger cabinet (16) further; Described even number set current transformer group (19) more than two and the control system corresponding with it (30) are divided into two groups, be separately positioned in described first power unit cabinet (12) and described second power unit cabinet (14), described first power unit cabinet (12) and the second power unit cabinet (14) are with water-cooling system, the transformer (TM) corresponding with described current transformer group (19) is separately positioned in described first transformer case (11) and described second transformer case (13), and described high-voltage switch gear combination (2) is arranged in described switch cubicle (15); Described first transformer case (11), the first power unit cabinet (12), the second transformer case (13), the second power unit cabinet (14), switch cubicle (15) and heat exchanger cabinet (16) are all arranged on described vehicular platform (20).
5. a kind of mobile high-power alternating current-direct current hybrid power supply device according to claim 4, is characterized in that: described transformer (TM) adopts dry type transformer structure.
6. a kind of mobile high-power alternating current-direct current hybrid power supply device according to claim 2, it is characterized in that: between described converter cell controller (7), between described converter cell controller (7) and described top level control device (8), adopt fiber-optic signal to transmit.
7. a kind of mobile high-power alternating current-direct current hybrid power supply device according to claim 2 or 6, is characterized in that: adopt RS485 bus to communicate described top level control device (8) with between described central controller (9), power-management centre (10).
8. according to a kind of mobile high-power alternating current-direct current hybrid power supply device in claim 1,2,4,5,6 described in arbitrary claim, it is characterized in that: described mobile high-power alternating current-direct current hybrid power supply device comprises the first current transformer group (17) and the second current transformer group (18); Described first current transformer group (17) and its control system (30), described second current transformer group (18) and its control system (30) are loaded on respective vehicular platform (20) respectively; Described first current transformer group (17) and the second current transformer group (18) respectively comprise two current transformer groups (19), described first current transformer group (17) is transmitting terminal current transformer, described second current transformer group (18) is receiving end current transformer, respective two current transformer group (19) outputs of described first current transformer group (17) and the second current transformer group (18) between two altogether DC side be connected; The corresponding current transformer (3) of the controllable current transformer unit (21) of described first current transformer group (17) and described second current transformer group (18) forms back-to-back double-PWM frequency converter between any two, and the interchange realizing described mobile high-power alternating current-direct current hybrid power supply device exports.
9. according to a kind of mobile high-power alternating current-direct current hybrid power supply device in claim 1,2,4,5,6 described in arbitrary claim, it is characterized in that: described mobile high-power alternating current-direct current hybrid power supply device comprises the first current transformer group (17) and the second current transformer group (18); Described first current transformer group (17) and its control system (30), described second current transformer group (18) and its control system (30) are loaded on respective vehicular platform (20) respectively; Described first current transformer group (17) and the second current transformer group (18) respectively comprise two current transformer groups (19), four current transformer group (19) outputs of described first current transformer group (17) and the second current transformer group (18) are in parallel, the current transformer (3) of described converter cell (1) works in impulse commutation state, realizes up-flow from zero and obtain galvanic current pressure exporting.
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| CN108574400B (en) * | 2018-04-18 | 2021-07-20 | 国网山西省电力公司电力科学研究院 | Alternating current-direct current hybrid large-range adjustable experimental power supply and control method thereof |
| CN113300307B (en) * | 2021-04-29 | 2022-12-27 | 珠海万力达电气自动化有限公司 | Railway power system interconnection equipment with dual-network ice melting function and control method |
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