CN109038249A - Centrifugation cascade intermediate frequency parallel connection power supply - Google Patents
Centrifugation cascade intermediate frequency parallel connection power supply Download PDFInfo
- Publication number
- CN109038249A CN109038249A CN201810700226.0A CN201810700226A CN109038249A CN 109038249 A CN109038249 A CN 109038249A CN 201810700226 A CN201810700226 A CN 201810700226A CN 109038249 A CN109038249 A CN 109038249A
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- China
- Prior art keywords
- cabinet
- power supply
- bus
- power
- intermediate frequency
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/24—Circuit arrangements for boards or switchyards
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/002—Intermediate AC, e.g. DC supply with intermediated AC distribution
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/10—Flexible AC transmission systems [FACTS]
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention belongs to power technique fields, and in particular to a kind of centrifugation cascade intermediate frequency parallel connection power supply.Power supply including several parallel connections, wherein power supply includes power cabinet, switching cabinet, intensive parallel bus and load cabinet, and the input power of power cabinet is three-phase main-frequency alternating current, output two-way intermediate frequency power supply to cabinet of transferring；Transfer cabinet output two-way respectively with bus-bar T-connecting in intensive parallel bus；Load cabinet input two-way respectively with bus-bar T-connecting in intensive parallel bus；Adjacent intensive parallel bus utilizes the connector contained by itself to dock；Load cabinet exports all the way to motor group load；Adjacent power cabinet carries out real-time communication using CAN bus.The present invention guarantee system is safe and stable, premised on reliability service, advanced optimize Intermediate frequency power supply system system structure, realize that continuous cutting is changed, flexibly configurable power supply capacity, it is able to satisfy the centrifugation plant design of different cascade forms and scale, Intermediate frequency power supply system system automation degree is improved, factory management is simplified.
Description
Technical field
The invention belongs to power technique fields, and in particular to a kind of centrifugation cascade intermediate frequency parallel connection power supply.
Background technique
The advantages that low energy consumption with it for centrifugal concentrating technology, exemption from inspection, becomes the optimal selection of nuclear fuel industrial application.Uranium
Concentration Production Line needs stable three-phase 380V/1600Hz power supply, and intermediate frequency power supply is exactly the pass for being the power supply of uranium enrichment production line
Button apparatus.
With being constantly progressive for China's Design of Centrifuge and production technology, centrifuge power has been stepped up.Centrifugation cascade
Structure is designed using modularization depth, increases section output power, uranium enrichment production line to the capacity of intermediate frequency power supply, performance,
More stringent requirements are proposed for reliability and economy.The shortcoming of active service Intermediate frequency power supply system system becomes clear day by day, and is mainly reflected in
Six aspects: first, Novel centrifuge power ascension 30%, system production capacity increase in density, active service power supply has been unable to satisfy novel
Centrifuge starts and runs requirement.Second, power source internal power switch device volume is big, and space layout allowance is excessively sufficient,
Power density is only 23kW/m3, occupied area is larger, and cable laying is longer, and pressure drop is big, is lost more.Third is centrifuged in order to balance
The starting of machine rises week and economical operation requirement, and rated output power and the real output of power supply differ greatly, power supply capacity
Utilization rate it is lower.4th, when system breaks down, power supply cannot be according to load power and operating condition automatic switching, to people
Power resource and technical ability degree of dependence are higher, and recovery operation is more complex, and system intelligent level is lower.5th, power supply is using seperated
Formula structure, every power supply contain 4 cabinet bodies, and system cabinet body total quantity up to 224, number of devices is more.6th, system investments take
With what is mainly determined by output power of power supply and number of devices, the confession of system is exchanged for increase number of devices and investment amount
Electric redundancy will be such that system specific investment increases.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of centrifugation cascade intermediate frequency parallel connection power supply, with guarantee system safety,
Stablize, premised on reliability service, advanced optimizes Intermediate frequency power supply system system structure, realize that continuous cutting is changed, flexibly configurable power supply
Capacity is able to satisfy the centrifugation plant design of different cascade forms and scale, improves Intermediate frequency power supply system system automation degree, simplifies work
Factory's management.
In order to solve the above technical problems, a kind of centrifugation cascade intermediate frequency parallel connection power supply of the present invention, the power supply including several parallel connections,
Wherein power supply includes power cabinet, switching cabinet, intensive parallel bus and load cabinet, and the input power of power cabinet is three-phase main-frequency city
Electricity, output two-way intermediate frequency power supply to cabinet of transferring；Transfer cabinet output two-way respectively with bus-bar T-connecting in intensive parallel bus；Load
Cabinet input two-way respectively with bus-bar T-connecting in intensive parallel bus；Adjacent intensive parallel bus utilizes the company contained by itself
Connect device docking；Load cabinet exports all the way to motor group load；Adjacent power cabinet carries out real-time communication using CAN bus.
The power cabinet, alternating current input cable connection alternating current and input disconnecting link, and alternating current input disconnecting link is connected work and connects
Tentaculum, functional contact device with it is soft open contactor and buffering resistor coupled in parallel connect, functional contact device output end is connected to phase shift transformation
Device input terminal, phase-shifting transformer output end are connected to rectifier input, and it is defeated that rectifier input output end is connected to inverter
Enter end, inverter output end is connected to output electronic switch TKI and exports the input terminal of electronic switch TK II, exports electronic cutting
It closes TKI and connects output busbar with output electronic switch TK II output end.
There are two sets of disconnecting switch inside the switching cabinet, i.e. disconnecting switch GLI, disconnecting switch GLII, two modules are mutual
Independent, output busbar is connected to the input terminal of disconnecting switch GLI, disconnecting switch GLII, disconnecting switch GLI, disconnecting switch GLII
Output end connection T connect busbar.
The beneficial technical effect of the present invention lies in:
The present invention configures Intermediate frequency power supply system system by the way of four kinds of modules and building block system splicing, realizes under third gear operating condition
12 power cabinet parallel runnings, peak power output, can be according to load power demand flexible configuration system up to 7200kVA.
The present invention uses modularized design, and technique connection is succinct, and each mounting assembly of power supply can be prefabricated in advance, the function of power supply
Rate density reaches 83kW/m3。
The present invention realizes starting in parallel and rises week and operation, simplifies the process flow that centrifugation group of planes starting rises week, solves
Extensive centrifuge cluster starting rises the problem of power deficiency during week.
The present invention has adaptive handoff functionality, simplifies accident and regular job process, improves Intermediate frequency power supply system system
The degree of automation optimizes factory management.
This power supply uses modularized design, can need according to the power supply of production line, is combined, spelled using four generic modules
It connects, is able to achieve a variety of power supply modes, configuration is convenient, and combination is flexible.
Module one is power cabinet.Using the SPWM number inversion of 18 arteries and veins phase-shifting transformers rectification and IGBT and pipe, function is realized
Rate transformation, by single channel input alternating current be transformed to 380V/1600Hz intermediate frequency power supply, by two-way electronic switch (TK1 and TK2) to turn
It receives at the counter output.Totally digitilized parallel controller built in power cabinet, for realizing the function of more power cabinet parallel runnings.
Module two is switching cabinet.Built-in two sets of disconnecting switch (GL1 and GL2) realize the electrical of power cabinet and parallel bus
Isolation.The input terminal of disconnecting switch GL1 is connected with the electronic switch TK1 of power cabinet, output end and 1 bus-bar T-connecting in parallel.Keep apart
The input terminal for closing GL2 is connected with the electronic switch TK2 of power cabinet, output end and 2 bus-bar T-connecting in parallel.
Module three is intensive parallel bus.Include bus, connector and expansion joint.Two sets of buses and switching cabinet and load
Cabinet is connected, and realizes that intermediate frequency power supply collects, transmits and distributes.Two sets of buses are installed in bus duct, by L1+L2+L3+L1+L2+L3
Mode power conductor is set.Intensive bus and connector realize that power supply buses extend by the way of grafting, utilize expansion
Stress caused by section is reduced because of installation or temperature rise.
Module four is load cabinet.Built-in two current supply circuits, are conveyed to motor group for the intermediate frequency power supply from parallel bus.
Every current supply circuit uses two sets of disconnecting switch and a set of breaker, realizes the electrical isolation of power supply and load.Load cabinet uses
Automatic control and protective program have automatic interlock control function, it can be achieved that current supply circuit automatically switches and protection.
Detailed description of the invention
Fig. 1 is that Fig. 1 provided by the present invention is that 12 centrifugations cascade Special middle frequency power sources in parallel system topological figure.
Fig. 2 is power cabinet schematic diagram.
Fig. 3 is switching cabinet schematic diagram.
Fig. 4 is intensive parallel bus top view.
Fig. 5 is load cabinet schematic diagram.
In figure: 1: power cabinet, 2: switching cabinet, 3: intensive parallel bus, 4: load cabinet, 5: motor group, 6: alternating current input
Cable, 7: output busbar, 8:T connect busbar, and 9: output cord, 10:CAN bus, 11: alternating current inputs disconnecting link, and 12: functional contact
Device, 13: it is soft to open contactor and buffer resistance, 14: phase-shifting transformer, 15: rectifier, 16: inverter, 17: output electronic switch
TK1,18: output electronic switch TK2,19: communication controller, 20: disconnecting switch GLI, 21: disconnecting switch GLII, 22: expansion
Section, 23: parallel bus, 24: connector, 25: and 1 circuit T connects device, and 26: and 2 circuit T connect device, 27: input isolation switch QSI,
28:1 circuit breaker QFI, 29: output isolation switch QSIII, 30: input isolation switch QSII, 31:1 circuit breaker
QFII, 32: output isolation switch QSIV
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, centrifugation cascade Special middle frequency parallel connection power supply includes the power supply of several parallel connections, wherein power supply includes power
Cabinet 1, switching cabinet 2, intensive parallel bus 3 and load cabinet 4, by being arranged in pairs or groups and being combined various components, it can be achieved that single machine
Run with load can also realize more power sources in parallel run with loads.The system constructed using 4 class components, at most achievable third gear work
12 power cabinet parallel runnings under condition, peak power output is up to 7200kVA.The input power of power cabinet 1 is three-phase main-frequency
Alternating current, output two-way intermediate frequency power supply to switching cabinet 2；Transfer cabinet 2 export two-way respectively with bus-bar T-connecting in intensive parallel bus 3；
Load cabinet 4 input two-way respectively with bus-bar T-connecting in intensive parallel bus 3；Adjacent intensive parallel bus 3 utilizes itself institute
The connector docking contained；Load cabinet 4 exports all the way to motor group load；Adjacent power cabinet 1 is carried out in real time using CAN bus 10
Communication.Under normal circumstances, according to load power demand, the power cabinet 1 of the half quantity and whole motor groups of associated loads are born in system
Lotus operation, remaining power cabinet 1 are in standby mode.Two are returned in all switching cabinets 2, intensive parallel bus 3 and load cabinet 4
Lu Jike is connected entirely, and simultaneously primary Ioops also may be selected or simultaneously secondary circuit is connected.When any running 1 failure of power cabinet, the power
Cabinet 1 is primary by self-starting, if Failure elimination, accesses parallel system again；If failure is not eliminated, system calls one automatically
The power cabinet 1 of normal Standby accesses parallel system, and 1 autostop of fault power cabinet waits manual maintenance.
As shown in Fig. 2, being that power cabinet 1 provides three-phase main-frequency mains supply by input cable.Alternating current inputs cable 6 and connects
Alternating current inputs disconnecting link 11, and alternating current input disconnecting link 11 is connected functional contact device 12, functional contact device 12 and it is soft open contactor and
Buffer resistance 13 is connected in parallel, and 12 output end of functional contact device is connected to 14 input terminal of phase-shifting transformer, and phase-shifting transformer 14 is defeated
Outlet is connected to 15 input terminal of rectifier, and 15 input terminal output end of rectifier is connected to 16 input terminal of inverter, and inverter 16 is defeated
Outlet be connected to output electronic switch TKI17 and export electronic switch TK II 18 input terminal, output electronic switch TKI17 and
Export 18 output end of electronic switch TK II connection output busbar 7.After connecting with alternating current input disconnecting link 11, functional contact device is utilized
12 and soft contactor and the buffer resistance 13 of opening realize soft start.Phase-shifting transformer 14 is combined with rectifier 15, by three-phase main-frequency city
Electricity is converted to direct current.Direct current is converted to three-phase mid-frequency power supply by digitalized S PWM control technology by inverter 16, through defeated
Grade exports respectively backward by electronic switch TKI17 and output electronic switch TK II 18 out.When operation, electronic switch TKI17 is exported
It may be selected to be also turned on output electronic switch TK II 18, single connection also may be selected, depending on the actual needs of scene.
As shown in figure 3, the input terminal of switching cabinet 2 is connected using busbar with power cabinet 1, output end utilizes busbar and intensity
Parallel bus 3 carries out T and connects.There are two sets of disconnecting switch inside switching cabinet 2, i.e. disconnecting switch GLI20, disconnecting switch GLII21, two
Module is mutually indepedent, and output busbar 7 is connected to the input terminal of disconnecting switch GLI20, disconnecting switch GLII21, disconnecting switch
GLI20, disconnecting switch GLII21 output end connection T connect busbar 8.When power cabinet 1 needs to power off maintenance, can will keep apart
It closes GLI20, disconnecting switch GLII21 to disconnect, guarantees the electrical isolation between power cabinet 1 and intensive parallel bus 3, and do not influence
The operation of rear class motor group load normal continuous.When operation, disconnecting switch GLI20, disconnecting switch GLII21 may be selected to be also turned on,
Also single connection may be selected, depending on the actual needs of scene.
As shown in figure 4, in intensive parallel bus 3 containing and primary Ioops L1, L2 and L3 busbar, and simultaneously secondary circuit
L1, L2 and L3 busbar, total six roots of sensation busbar.The 20 meters of settings in every busbar interval, one expansion joint 22, for spatial position adjustment and
The stress generated between busbar when reducing temperature change.The 5 meters of settings in every busbar interval, one connector 24, for extending mother in parallel
Arrange power supply distance.And L1, L2 and L3 busbar of primary Ioops connect GLI20 pairs of disconnecting switch of device 25 and cabinet 2 of transferring with simultaneously 1 circuit T
It connects in succession；And L1, L2 and L3 busbar of secondary circuit connect device 26 by simultaneously 2 circuit T and dock with the disconnecting switch GLII21 for cabinet 2 of transferring
Connection.Intensive parallel bus 3 need to configure support trailing arm at pre-installed position before installing, specific installation measure can be according to scene
Depending on situation.
As shown in figure 5, load cabinet 4 has two current supply circuits, T connects busbar and passes sequentially through input isolation switch QSI 27,1 times
Circuit breaker QFI 28 and output isolation switch QSIII 29, is output to motor group 5, constitutes power supply primary Ioops, and T connects busbar successively
By input isolation switch QSII30,1 circuit breaker QFII31, output isolation switch QSIV3, it is output to the composition of motor group 5
Power supply secondary circuit, every current supply circuit can realize the electrical isolation of intensive parallel bus 3 and motor group load.Load cabinet uses
Automatic control and protective program pass through 1 circuit breaker of circuit breaker QFI 28 and 1 QFII 31 and realize automatic interlock control
Function, automatic switching function and defencive function.When operation, power supply primary Ioops and power supply secondary circuit may be selected to be also turned on, can also
Single connection is selected, depending on the actual needs of scene.
The present invention is explained in detail above in conjunction with drawings and examples, but the present invention is not limited to above-mentioned implementations
Example, within the knowledge of a person skilled in the art, can also make without departing from the purpose of the present invention
Various change out.The content being not described in detail in the present invention can use the prior art.
Claims (3)
1. a kind of centrifugation cascades intermediate frequency parallel connection power supply, it is characterised in that: the power supply including several parallel connections, wherein power supply includes power
Cabinet (1), switching cabinet (2), intensive parallel bus (3) and load cabinet (4), the input power of power cabinet (1) are three-phase main-frequency city
Electricity, output two-way intermediate frequency power supply to cabinet of transferring (2)；Transfer cabinet (2) output two-way respectively with intensive parallel bus (3) interior bus
T connects；Load cabinet (4) input two-way respectively with intensive parallel bus (3) interior bus-bar T-connecting；Adjacent intensive parallel bus (3)
It is docked using the connector contained by itself；Load cabinet (4) exports all the way to motor group load；Adjacent power cabinet (1) utilizes CAN
Bus (10) carries out real-time communication.
2. a kind of centrifugation according to claim 1 cascades intermediate frequency parallel connection power supply, it is characterised in that: the power cabinet (1),
Alternating current inputs cable (6) connection alternating current input disconnecting link (11), and alternating current input disconnecting link (11) is connected functional contact device (12), work
Make contactor (12) and open contactor and buffer resistance (13) is connected in parallel with soft, functional contact device (12) output end is connected to phase shift
Transformer (14) input terminal, phase-shifting transformer (14) output end are connected to rectifier (15) input terminal, rectifier (15) input terminal
Output end is connected to inverter (16) input terminal, and inverter (16) output end is connected to output electronic switch TKI (17) and exports
The input terminal of electronic switch TK II (18), exports electronic switch TKI (17) and output electronic switch TK II (18) output end connects
Connect output busbar (7).
3. a kind of centrifugation according to claim 2 cascades intermediate frequency parallel connection power supply, it is characterised in that: the switching cabinet (2)
There are two sets of disconnecting switch in inside, i.e. disconnecting switch GLI (20), disconnecting switch GLII (21), two modules are mutually indepedent, exports busbar
(7) input terminal of disconnecting switch GLI (20), disconnecting switch GLII (21), disconnecting switch GLI (20), disconnecting switch are connected to
The output end connection T of GLII (21) connects busbar (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810700226.0A CN109038249A (en) | 2018-06-29 | 2018-06-29 | Centrifugation cascade intermediate frequency parallel connection power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810700226.0A CN109038249A (en) | 2018-06-29 | 2018-06-29 | Centrifugation cascade intermediate frequency parallel connection power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109038249A true CN109038249A (en) | 2018-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810700226.0A Pending CN109038249A (en) | 2018-06-29 | 2018-06-29 | Centrifugation cascade intermediate frequency parallel connection power supply |
Country Status (1)
| Country | Link |
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| CN (1) | CN109038249A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811782A (en) * | 2014-12-31 | 2016-07-27 | 中核陕西铀浓缩有限公司 | Dedicated integrated variable frequency power supply for uranium enrichment |
-
2018
- 2018-06-29 CN CN201810700226.0A patent/CN109038249A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811782A (en) * | 2014-12-31 | 2016-07-27 | 中核陕西铀浓缩有限公司 | Dedicated integrated variable frequency power supply for uranium enrichment |
Non-Patent Citations (1)
| Title |
|---|
| 苏智欣: "大功率中频电源并联的研究", 《中国核科学技术进展报告》 * |
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