CN108365626A - A kind of intelligent residential district power supply system based on solid-state transformer - Google Patents
A kind of intelligent residential district power supply system based on solid-state transformer Download PDFInfo
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- CN108365626A CN108365626A CN201810168306.6A CN201810168306A CN108365626A CN 108365626 A CN108365626 A CN 108365626A CN 201810168306 A CN201810168306 A CN 201810168306A CN 108365626 A CN108365626 A CN 108365626A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 27
- 238000004891 communication Methods 0.000 claims abstract description 13
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 12
- 239000003990 capacitor Substances 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000010248 power generation Methods 0.000 abstract description 3
- 238000004146 energy storage Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- H02J3/382—
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- H02J13/0096—
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- 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
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/128—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment involving the use of Internet protocol
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- Supply And Distribution Of Alternating Current (AREA)
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Abstract
The intelligent residential district power supply system based on solid-state transformer that the invention discloses a kind of,Ac grid system is connect with one end of Bidirectional intelligent ammeter,The other end of Bidirectional intelligent ammeter is connect with the input terminal of AC/DC rectification modules,The output end of AC/DC rectification modules is connect with the input terminal of DC/DC conversion modules,The output end of DC/DC conversion modules is connect with the input terminal of DC load power distribution network and DC/AC inverter modules respectively,The output end of DC/AC inverter modules is connect with AC load power distribution network,The input terminal of comprehensive DC power supply and intelligent junction box connects,The output end of intelligent junction box is connected between AC/DC rectification modules and DC/DC conversion modules,The intelligent communication system is connected between DC/DC conversion modules and DC load power distribution network between DC/AC inverter modules and AC load power distribution network.The case where present invention can monitor power generation, energy-storage system and mobile Internet are applied, and the function of the acquisition of power data, record, display can be completed, thus control operation of the realization to intelligent residential district power supply system.
Description
Technical field
The present invention relates to a kind of power supply system, specifically a kind of intelligent residential district power supply system based on solid-state transformer.
Background technology
To meet the power demand of economic society fast development, energy-saving and emission-reduction, State Grid Corporation of China is promoted actively to change electricity
Net development pattern establishes the development strategy for building strong intelligent grid.Important set of the intelligent power as strong intelligent grid
At part, and intelligent residential district is to realize that supply intelligent is reliable, Intelligent Service is interactive, efficiency intelligent management, promoted power supply quality and
Service quality enhances the important means of electric network synthetic service ability.New energy is the basis of future source of energy structure, and will not be right
Environment generates pollution.New energy technology is applied in intelligent residential district, can effectively realize that energy-saving and emission-reduction, low-carbon economy are wanted
It asks.There is presently no the intelligent residential district power supply systems using solid-state transformer.
Invention content
The intelligent residential district power supply based on solid-state transformer that in view of the above existing problems in the prior art, the present invention provides a kind of
System can monitor power generation, the case where energy-storage system and mobile Internet are applied, and can complete the acquisition of power data, record,
The function of display, to realize that the control to intelligent residential district power supply system is run.
To achieve the goals above, the technical solution adopted by the present invention is：A kind of intelligent residential district based on solid-state transformer
Power supply system, including it is ac grid system, Bidirectional intelligent ammeter, comprehensive DC power supply, intelligent junction box, intelligent communication system, straight
Current load power distribution network, AC load power distribution network and solid-state transformer, the solid-state transformer include AC/DC rectification modules, DC/DC
Conversion module and DC/AC inverter modules, ac grid system are connect with one end of Bidirectional intelligent ammeter, Bidirectional intelligent ammeter it is another
End is connect with the input terminal of AC/DC rectification modules, and the output end of AC/DC rectification modules connects with the input terminal of DC/DC conversion modules
It connects, the output end of DC/DC conversion modules is connect with the input terminal of DC load power distribution network and DC/AC inverter modules respectively, DC/AC
The output end of inverter module is connect with AC load power distribution network, and the input terminal of comprehensive DC power supply and intelligent junction box connects, intelligence
The output end of energy header box is connected between AC/DC rectification modules and DC/DC conversion modules, and the intelligent communication system connects respectively
It is connected between DC/DC conversion modules and DC load power distribution network between DC/AC inverter modules and AC load power distribution network.
Further, the intelligent communication system is made of intelligent monitoring terminal and intelligent information case.
Further, the comprehensive DC power supply is one or more groups in wind-power electricity generation, photovoltaic generation and accumulator group
It closes.
Further, the AC/DC rectification modules include the control switching group that is composed in series of two full-controlled switch devices and
Capacitance, the control switching group are three, and three control switching groups and capacitance are in parallel, the full control of each of described control switching group
Type switching device is parallel with diode, and three ac input ends are connected to full-control type in three control switching groups and open
Between closing device, two direct current outputs terminate at the both ends of capacitance.
Further, the DC/DC conversion modules include low-pressure side DC capacitor, single-phase full-bridge inverter, high frequency transformer,
Single-phase bridge rectifier and high-pressure side DC capacitor；Low-pressure side DC capacitor is connect with single-phase full-bridge inverter, and single-phase full bridge is inverse
It includes two control switching groups in parallel to become device and single-phase bridge rectifier, and the control switching group is by two full-controlled switch
Devices in series forms, and the both ends of each full-controlled switch device are parallel with diode, one end connection of high frequency transformer
On circuit in two control switching groups of single-phase full-bridge inverter between full-controlled switch device, the other end of high frequency transformer
It is connected on the circuit in two control switching groups of single-phase bridge rectifier between full-controlled switch device, single-phase bridge rectification
Device is connect with high-pressure side DC capacitor.
Further, the DC/AC rectification modules include the control switching group that is composed in series of two full-controlled switch devices and
Capacitance, the control switching group are three, and three control switching groups and capacitance are in parallel, the full control of each of described control switching group
Type switching device is parallel with diode, and two direct-flow input ends are connected on the both ends of capacitance, three ac output ends difference
It is connected in three control switching groups between full-controlled switch device.
Further, the full-controlled switch device is one of IGBT, IGCT and MOSFET.
Compared with prior art, the present invention has the following advantages：
1, wind energy, solar energy are integrated, the regenerative resources such as accumulator realize distributed energy reliable grid connection, ensure cheap
Reliable cell electric energy supply helps energy system to realize to low-carbon, transformation efficiently, environmentally friendly.
2, using solid-state transformer structure design, make DC power supply and ac grid system common DC booster circuit and inversion
Circuit can be substantially reduced system bulk and cost, improve utilization rate of equipment and installations；It is boosted using high frequency transformer, is realizing voltage
Reach electrical isolation purpose while grade transformation.
Description of the drawings
Fig. 1 is the whole electric functional block diagram of the present invention
Fig. 2 is the circuit diagram of AC/DC rectification modules in the present invention
Fig. 3 is the circuit diagram of DC/DC conversion modules in the present invention
Fig. 4 is the circuit diagram of DC/AC inverter modules in the present invention
Fig. 5 is the monitoring electricity functional block diagram of the present invention
Specific implementation mode
The invention will be further described below.
As shown in Figures 1 to 4, the present invention includes ac grid system, Bidirectional intelligent ammeter, comprehensive DC power supply, smart sink
Flow case, intelligent communication system, DC load power distribution network, AC load power distribution network and solid-state transformer, the solid-state transformer packet
AC/DC rectification modules, DC/DC conversion modules and DC/AC inverter modules are included, one end of ac grid system and Bidirectional intelligent ammeter connects
It connects, the other end of Bidirectional intelligent ammeter is connect with the input terminal of AC/DC rectification modules, the output end and DC/ of AC/DC rectification modules
The input terminals of DC conversion modules connects, the output ends of DC/DC conversion modules respectively with DC load power distribution network and DC/AC inversion moulds
The input terminal of block connects, and the output end of DC/AC inverter modules is connect with AC load power distribution network, comprehensive DC power supply and smart sink
The input terminal connection of case is flowed, the output end of intelligent junction box is connected between AC/DC rectification modules and DC/DC conversion modules, institute
State intelligent communication system be connected between DC/DC conversion modules and DC load power distribution network and DC/AC inverter modules with hand over
Between current load power distribution network.
Further, the intelligent communication system is made of intelligent monitoring terminal and intelligent information case.Intelligent monitoring terminal connects
Multiple alternating current-direct current charging piles, accumulator group and district road lamp component are connect, it can be to charging pile, battery charging situation and cell road
Lamp electricity consumption situation is monitored.Intelligent information case connects multiple AC loads and corresponding intelligent domestic system, is used for acquiring
Family information and power information receive the smart home request signal of each user and are timely handled.
Further, the comprehensive DC power supply is one or more groups in wind-power electricity generation, photovoltaic generation and accumulator group
It closes.In new energy DC distribution net, output end, the output end of roof photovoltaic array and the output end of accumulator of wind-driven generator
The input terminal of common access intelligent junction box, the output end of intelligent junction box is as its output end.It is straight that intelligent junction box plays friendship
Flow the effect of change process and confluence.
Further, the AC/DC rectification modules include the control switching group that is composed in series of two full-controlled switch devices and
Capacitance, the control switching group are three, and three control switching groups and capacitance are in parallel, the full control of each of described control switching group
Type switching device is parallel with diode, and three ac input ends are connected to full-control type in three control switching groups and open
Between closing device, two direct current outputs terminate at the both ends of capacitance.
Further, the DC/DC conversion modules include low-pressure side DC capacitor, single-phase full-bridge inverter, high frequency transformer,
Single-phase bridge rectifier and high-pressure side DC capacitor；Low-pressure side DC capacitor is connect with single-phase full-bridge inverter, and single-phase full bridge is inverse
It includes two control switching groups in parallel to become device and single-phase bridge rectifier, and the control switching group is by two full-controlled switch
Devices in series forms, and the both ends of each full-controlled switch device are parallel with diode, one end connection of high frequency transformer
On circuit in two control switching groups of single-phase full-bridge inverter between full-controlled switch device, the other end of high frequency transformer
It is connected on the circuit in two control switching groups of single-phase bridge rectifier between full-controlled switch device, single-phase bridge rectification
Device is connect with high-pressure side DC capacitor.
Further, the DC/AC rectification modules include the control switching group that is composed in series of two full-controlled switch devices and
Capacitance, the control switching group are three, and three control switching groups and capacitance are in parallel, the full control of each of described control switching group
Type switching device is parallel with diode, and two direct-flow input ends are connected on the both ends of capacitance, and three ac output ends are separately connected
It is controlled at three in switching group between full-controlled switch device.
Further, the full-controlled switch device is one of IGBT, IGCT and MOSFET.
The present invention carrying out practically process be：
(1) power supply system
Intelligent residential district power supply system is collectively constituted by wind-force, photovoltaic generation, accumulator group and ac grid system.Wind-force, light
Volt power generation, accumulator group electric energy access the DC/DC conversion modules of solid-state transformer through intelligent junction box.Ac grid system access is solid
The AC/DC rectification modules of state transformer also import the DC/DC conversion modules of solid-state transformer, through high frequency transformer boost conversion
It powers to DC load at high voltage direct current, be most converted into alternating current through DC/AC inverter modules afterwards powers to AC load.
(2) distribution system
In order to preferably coordinate the flowing of intelligent residential district new energy system capacity, realizes the reasonable distribution of power, incite somebody to action
The control targe of solid-state transformer is positioned as keeping DC/DC conversion modules output DC voltage stability, ensures DC/AC inverter modules
The operation of B.O.T.U. power factor is exported, output-power fluctuation is small, and output current is sine wave and harmonic component is small.Control module
PWM controls are all made of to single-phase full-bridge inverter and single-phase full bridge rectifier, and to DC/AC inverter modules using voltage, electric current
Double-loop control strategy, and synchronization phase-locked control technology is combined, realize output current with voltage with the same phase of frequency.
(2) monitoring system
As shown in figure 5, connecting Bidirectional intelligent ammeter by existing comprehensive monitoring management system and passing the data of record
It send to intelligent electric power business hall；Intelligent junction box is connected, according to the variation of new energy interface characteristic signal to solid-state transformer
Suitable control signal, carries out fast and accurately power regulation；Intelligent communication system is connected, the intelligence in intelligent communication system is passed through
Can monitor terminal, it can be achieved that statistics to the metering of each charging pile, control device and user's charging, to the charging of user into
The effective management of row；By the intelligent information case in intelligent communication system, it can be achieved that user information and the real-time of power information are adopted
Collection, monitoring and analysis, to complete the intelligent management of family product, achieve the purpose that electricity saving and energy saving.
Claims (7)
1. a kind of intelligent residential district power supply system based on solid-state transformer, which is characterized in that including ac grid system, Bidirectional intelligent
Ammeter, comprehensive DC power supply, intelligent junction box, intelligent communication system, DC load power distribution network, AC load power distribution network and solid-state
Transformer, the solid-state transformer include AC/DC rectification modules, DC/DC conversion modules and DC/AC inverter modules, ac transmission
Net is connect with one end of Bidirectional intelligent ammeter, and the other end of Bidirectional intelligent ammeter is connect with the input terminal of AC/DC rectification modules,
The output end of AC/DC rectification modules is connect with the input terminal of DC/DC conversion modules, the output ends of DC/DC conversion modules respectively with
DC load power distribution network is connected with the input terminal of DC/AC inverter modules, output end and the AC load distribution of DC/AC inverter modules
The input terminal of net connection, comprehensive DC power supply and intelligent junction box connects, and the output end of intelligent junction box is connected to AC/DC rectifications
Between module and DC/DC conversion modules, the intelligent communication system is connected to DC/DC conversion modules and DC load distribution
Between net between DC/AC inverter modules and AC load power distribution network.
2. a kind of intelligent residential district power supply system based on solid-state transformer according to claim 1, which is characterized in that described
Intelligent communication system is made of intelligent monitoring terminal and intelligent information case.
3. a kind of intelligent residential district power supply system based on solid-state transformer according to claim 1, which is characterized in that described
Comprehensive DC power supply is one or more combinations in wind-power electricity generation, photovoltaic generation and accumulator group.
4. a kind of intelligent residential district power supply system based on solid-state transformer according to claim 1, which is characterized in that described
AC/DC rectification modules include the control switching group and capacitance that two full-controlled switch devices are composed in series, the control switching group
It it is three, three control switching groups and capacitance are in parallel, and each full-controlled switch device in the control switching group is parallel with
Diode, three ac input ends are connected in three control switching groups between full-controlled switch device, and two direct currents are defeated
Go out to terminate at the both ends of capacitance.
5. a kind of intelligent residential district power supply system based on solid-state transformer according to claim 1, which is characterized in that described
DC/DC conversion modules include low-pressure side DC capacitor, single-phase full-bridge inverter, high frequency transformer, single-phase bridge rectifier and height
Press side DC capacitor；Low-pressure side DC capacitor is connect with single-phase full-bridge inverter, single-phase full-bridge inverter and single-phase bridge rectification
Device includes two control switching groups in parallel, and the control switching group is composed in series by two full-controlled switch devices, described
The both ends of each full-controlled switch device are parallel with diode, and one end of high frequency transformer connects the two of single-phase full-bridge inverter
In a control switching group between full-controlled switch device, the other end of high frequency transformer is connected to two of single-phase bridge rectifier
It controls in switching group between full-controlled switch device, single-phase bridge rectifier is connect with high-pressure side DC capacitor.
6. a kind of intelligent residential district power supply system based on solid-state transformer according to claim 1, which is characterized in that described
DC/AC rectification modules include the control switching group and capacitance that two full-controlled switch devices are composed in series, the control switching group
It it is three, three control switching groups and capacitance are in parallel, and each full-controlled switch device in the control switching group is parallel with
Diode, two direct-flow input ends are connected on the both ends of capacitance, and three ac output ends are connected in three control switching groups
Between full-controlled switch device.
7. according to a kind of intelligent residential district power supply system based on solid-state transformer described in claim 4 to 6, which is characterized in that
The full-controlled switch device is one of IGBT, IGCT and MOSFET.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810168306.6A CN108365626A (en) | 2018-02-28 | 2018-02-28 | A kind of intelligent residential district power supply system based on solid-state transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810168306.6A CN108365626A (en) | 2018-02-28 | 2018-02-28 | A kind of intelligent residential district power supply system based on solid-state transformer |
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| CN108365626A true CN108365626A (en) | 2018-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810168306.6A Pending CN108365626A (en) | 2018-02-28 | 2018-02-28 | A kind of intelligent residential district power supply system based on solid-state transformer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713910A (en) * | 2019-01-16 | 2019-05-03 | 浙江省检验检疫科学技术研究院 | Only handle the alternating current steady voltage plug of Partial Power |
| CN110380631A (en) * | 2019-05-14 | 2019-10-25 | 浙江省检验检疫科学技术研究院 | High power density DC power supply |
| CN112531795A (en) * | 2019-09-17 | 2021-03-19 | 台达电子工业股份有限公司 | Carrier charging system and three-phase power supply system applied to solid-state transformer framework |
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| CN103944180A (en) * | 2013-01-21 | 2014-07-23 | 同济大学 | Hybrid energy storage wind/PV hybrid generation system based on solid state transformer |
| CN104065154A (en) * | 2014-06-09 | 2014-09-24 | 深圳微网能源管理系统实验室有限公司 | Frequency changer emergency power supply system |
| CN104993713A (en) * | 2015-07-22 | 2015-10-21 | 太原理工大学 | Control method for double PWM solid-state transformer |
| US20160352229A1 (en) * | 2015-05-26 | 2016-12-01 | Hitachi, Ltd. | Power Conversion Device and Power Conversion Control Method for the Same |
| CN106803672A (en) * | 2016-12-06 | 2017-06-06 | 上海电力学院 | The energy source router and control strategy of family type energy LAN |
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| CN103944180A (en) * | 2013-01-21 | 2014-07-23 | 同济大学 | Hybrid energy storage wind/PV hybrid generation system based on solid state transformer |
| CN104065154A (en) * | 2014-06-09 | 2014-09-24 | 深圳微网能源管理系统实验室有限公司 | Frequency changer emergency power supply system |
| US20160352229A1 (en) * | 2015-05-26 | 2016-12-01 | Hitachi, Ltd. | Power Conversion Device and Power Conversion Control Method for the Same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109713910A (en) * | 2019-01-16 | 2019-05-03 | 浙江省检验检疫科学技术研究院 | Only handle the alternating current steady voltage plug of Partial Power |
| CN110380631A (en) * | 2019-05-14 | 2019-10-25 | 浙江省检验检疫科学技术研究院 | High power density DC power supply |
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Application publication date: 20180803 |