CN112134359A - Alternating current-direct current hybrid scene application system - Google Patents

Alternating current-direct current hybrid scene application system Download PDF

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Publication number
CN112134359A
CN112134359A CN202011002740.0A CN202011002740A CN112134359A CN 112134359 A CN112134359 A CN 112134359A CN 202011002740 A CN202011002740 A CN 202011002740A CN 112134359 A CN112134359 A CN 112134359A
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CN
China
Prior art keywords
unit
electronic transformer
voltage
bus
power generation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011002740.0A
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Chinese (zh)
Inventor
何建宗
戴喜良
万四维
薛峰
郑风雷
梁万龙
张言权
涂智豪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Power Grid Co Ltd
Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Original Assignee
Guangdong Power Grid Co Ltd
Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Power Grid Co Ltd, Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd filed Critical Guangdong Power Grid Co Ltd
Priority to CN202011002740.0A priority Critical patent/CN112134359A/en
Publication of CN112134359A publication Critical patent/CN112134359A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00001Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/02Circuit arrangements for ac mains or ac distribution networks using a single network for simultaneous distribution of power at different frequencies; using a single network for simultaneous distribution of ac power and of dc power
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381Dispersed generators
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20The dispersed energy generation being of renewable origin
    • H02J2300/22The renewable source being solar energy
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20The dispersed energy generation being of renewable origin
    • H02J2300/22The renewable source being solar energy
    • H02J2300/24The renewable source being solar energy of photovoltaic origin
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20The dispersed energy generation being of renewable origin
    • H02J2300/28The renewable source being wind energy
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/56Power conversion systems, e.g. maximum power point trackers
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/70Smart grids as climate change mitigation technology in the energy generation sector
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/14Energy storage units

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The invention discloses an alternating current-direct current hybrid scene application system which comprises a power electronic transformer, combined application scene units and a data processing center, wherein the power electronic transformer outputs lines with different voltage grades to respectively supply power to different combined application fields; the invention optimizes the use requirement of the power distribution network based on real-time monitoring so as to provide different power supply services.

Description

Alternating current-direct current hybrid scene application system
Technical Field
The invention relates to the technical field of electric field mixing, in particular to an alternating current and direct current mixed scene application system.
Background
The traditional alternating current distribution network can not meet the power consumption requirements of different types of loads at the present stage, and under the background of rapid development of power electronic technology, the power consumption requirements of various types of loads can be comprehensively solved by adopting an alternating current and direct current hybrid power supply mode, so that high-efficiency and diversified reliable power supply services are provided for alternating current and direct current loads.
Disclosure of Invention
The invention aims to provide an alternating current-direct current hybrid scene application system to solve the technical problem that a power distribution network in the prior art cannot meet power consumption requirements of different types of loads at the present stage.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
an alternating current-direct current hybrid scene application system comprises a power electronic transformer, combined application scene units and a data processing center, wherein the power electronic transformer is used for outputting voltages of different grades to different combined application fields through different lines, and the data processing center is used for monitoring the operation state of the power electronic transformer and the field operation data of each combined application scene unit;
each combined application scene unit is electrically connected with a comprehensive data processing unit, the combined application scene units transmit operation data to the comprehensive data processing unit, and each comprehensive data processing unit is in communication connection with a data merging unit;
the power electronic transformer is electrically connected with a control unit, and the control unit regulates and controls the output voltage level of the power electronic transformer and monitors the working safety of the power electronic transformer according to the operation data of the power electronic transformer;
the control unit and the data merging unit are in communication connection with the data processing center.
Optionally, the power electronic transformer is connected to the control unit through an optical fiber, and the control unit includes:
the signal acquisition module is used for acquiring voltage, current and temperature of the power electronic transformer during operation;
the input and output module is used for controlling the on and off of all switches of the power electronic transformer;
the software protection module is used for setting a protection strategy according to the collected operation data of the power electronic transformer, and performing loop protection through the number of users opening the input-output module and the operation signal locking when the operation is abnormal;
and the hardware protection module is used for isolating faults and protecting the power transformer as far as possible when the system is abnormally operated.
Optionally, the control unit further includes a communication module, and the communication module is used for establishing communication connection with the power electronic transformer and the data processing center respectively.
Optionally, the input end of the power electronic transformer is introduced by a 10kV AC bus, and the output end of the power electronic transformer outputs three lines with different voltage levels, namely, a 10kV DC bus, ± 375V DC bus, and a 380V AC bus, to be respectively used by different combined application scene units.
Optionally, the combined application scene unit mainly comprises a battery energy storage unit and a photovoltaic power generation unit, and the battery energy storage unit and the photovoltaic power generation unit are connected to the 10kV DC bus in a parallel manner;
the battery energy storage unit is used for converting the voltage of a 10kV DC bus into 380V voltage through DC-DC change and supplying the 380V voltage to the storage battery for energy storage;
the photovoltaic power generation unit is used for converting the obtained direct current DC voltage into 10kV DC bus voltage through DC-DC conversion so as to provide a distributed power supply.
Optionally, the combined application scene unit includes a photovoltaic power generation unit, a charging pile unit and a direct current load unit, and the photovoltaic power generation unit, the charging pile unit and the direct current load unit are connected to the ± 375V DC bus in a parallel manner;
the photovoltaic power generation unit converts the obtained direct current DC voltage into the +/-375V DC bus voltage through DC-DC conversion;
the charging pile is connected to the +/-375V DC bus;
the direct current load comprises a direct current air conditioner, lighting and a direct current screen cabinet.
Optionally, the combined application scene unit comprises a wind power generation unit, a photo-thermal power generation unit and an alternating current load unit, and the wind power generation unit, the photo-thermal power generation unit and the alternating current load unit are connected to a 380v AC bus in a parallel manner;
the wind power generation unit converts the direct current DC voltage obtained by the wind power generation module into 380v AC bus voltage through DC-AC conversion;
the photo-thermal power generation unit converts the direct-current DC voltage obtained by the photo-thermal power generation module into 380v AC bus voltage through DC-AC conversion;
the AC load unit includes an AC light and an AC motor.
Compared with the prior art, the invention has the following beneficial effects:
the data of each scene in operation is transmitted to the comprehensive processing unit through the optical fiber, then is collected to the data merging unit through the network transmission line, and transmits the information to the local industrial personal computer, and then is transmitted to the remote background through the network transmission line, so as to implement and monitor the application scene data. Meanwhile, the control cabinet transmits the running condition of the power electronic transformer to the local industrial personal computer and then to a remote background through a network transmission line, so that the running condition of the power electronic transformer is monitored, the use requirement of the power distribution network is optimized based on real-time monitoring, and different power supply services are provided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
FIG. 1 is a block diagram of a structure provided by an embodiment of the present invention;
fig. 2 is a block flow diagram of an operation method according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present invention provides an ac/dc hybrid scene application system, which includes a power electronic transformer, a combined application scene unit, and a data processing center.
The power electronic transformer outputs lines with different voltage grades to respectively supply power to different combined application fields, and the data processing center is used for monitoring the operation state of the power electronic transformer and the field operation data of each combined application scene unit.
Each combined application scene unit is electrically connected with a comprehensive data processing unit, the combined application scene units transmit operation data to the comprehensive data processing unit, and all the comprehensive data processing units are in communication connection with a data merging unit.
The power electronic transformer is electrically connected with a control unit, and the control unit regulates and controls the output voltage level of the power electronic transformer and monitors the working safety of the power electronic transformer according to the operation data of the power electronic transformer; the control unit and the data merging unit are in communication connection with the data processing center.
The power electronic transformer passes through optic fibre and is connected with the control unit, and the control unit includes:
and the signal acquisition module is used for acquiring the voltage, the current and the temperature of the power electronic transformer during operation.
And the input and output module is used for controlling the on and off of all switches of the power electronic transformer.
And the software protection module is used for setting a protection strategy according to the collected operation data of the power electronic transformer, and performing loop protection by opening the entrance and exit module and locking the operation signal when the operation is abnormal.
And the hardware protection module is used for isolating faults and protecting the power transformer as far as possible when the system is abnormal in operation.
In addition, the control unit also comprises a communication module, and communication connection is respectively established with the power electronic transformer and the data processing center through the communication module.
The input end of the power electronic transformer is introduced by a 10kV AC bus, and the output end of the power electronic transformer outputs three different voltage levels of the 10kV DC bus, the +/-375V DC bus and the 380V AC bus to be respectively used by different combined application scene units.
In the present embodiment, three application scenarios are divided, and for convenience of description, the three application scenarios are respectively denoted as application scenario 1, application scenario 2, and application scenario 3.
Application scenario 1:
the photovoltaic power generation system mainly comprises a battery energy storage unit and a photovoltaic power generation unit, wherein the battery energy storage unit and the photovoltaic power generation unit are connected into a 10kV DC bus in a parallel mode, and the voltage of the 10kV DC bus is converted into 380V voltage through DC-DC change under the action of the battery energy storage unit to be supplied to a storage battery for energy storage; the photovoltaic power generation unit is used for converting the obtained direct current DC voltage into 10kV DC bus voltage through DC-DC conversion so as to provide a distributed power supply.
Application scenario 2:
the photovoltaic power generation unit, the charging pile unit and the direct current load unit are connected into a +/-375V DC bus in a parallel mode.
The photovoltaic power generation unit is used for converting the obtained direct current DC voltage into +/-375V DC bus voltage through DC-DC conversion so as to realize multi-energy complementation and provide a distributed power supply; the charging pile is connected to a +/-375V DC bus; the direct current load mainly comprises a direct current air conditioner, lighting and a direct current screen cabinet.
Application scenario 3:
the photovoltaic.
The wind power generation unit obtains direct current DC voltage through the wind power generation module, and the direct current DC voltage is converted into 380v AC bus voltage through DC-AC so as to realize multi-energy complementation and provide a distributed power supply; the photothermal power generation unit obtains direct current DC voltage through the photothermal power generation module, and the direct current DC voltage is converted into 380v AC bus voltage through DC-AC so as to realize multi-energy complementation and provide a distributed power supply; the AC load unit mainly comprises AC lighting and an AC motor.
The system implementation is as shown in fig. 2, the power electronic transformer is connected with the control cabinet through an optical fiber, and the control cabinet mainly comprises: the system comprises a signal sampling module (which is in charge of collecting voltage, current and temperature signals of the power electronic transformer during operation), an input and output module (which is in charge of controlling the on/off of all switches of the power electronic transformer), a software protection module (which sets a protection strategy through collected signal quantity and carries out loop protection through the on/off switch and operation signal locking when the operation is abnormal), a hardware protection module (which protects the system under the condition of abnormal operation through the hardware module and isolates faults), and a communication module (which is in communication connection with the transformer and the local industrial personal computer 1). The local industrial personal computer 1 and the local industrial personal computer 2 are connected with a remote industrial personal computer through a network transmission line, and the remote industrial personal computer is connected with a remote background through a network communication line.
After the power electronic transformer is normally started, the output voltage of each port of the power electronic transformer reaches a set value, and then each scene application mode is started. The data of each scene during operation is transmitted to the comprehensive processing unit through the optical fiber, then is collected to the data merging unit through the network transmission line, and transmits the information to the local industrial personal computer 2, and then is transmitted to the remote background through the network transmission line to implement and monitor the application scene data. Meanwhile, the control cabinet transmits the operation condition of the power electronic transformer to the local industrial personal computer 1, and then transmits the operation condition to a remote background through a network transmission line, so as to monitor the operation condition of the power electronic transformer.
The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.

Claims (7)

1. An alternating current-direct current hybrid scene application system comprises a power electronic transformer, combined application scene units and a data processing center, and is characterized in that the power electronic transformer is used for outputting voltages of different grades to different combined application fields through different lines, and the data processing center is used for monitoring the operation state of the power electronic transformer and the field operation data of each combined application scene unit;
each combined application scene unit is electrically connected with a comprehensive data processing unit, the combined application scene units transmit operation data to the comprehensive data processing unit, and each comprehensive data processing unit is in communication connection with a data merging unit;
the power electronic transformer is electrically connected with a control unit, and the control unit regulates and controls the output voltage level of the power electronic transformer and monitors the working safety of the power electronic transformer according to the operation data of the power electronic transformer;
the control unit and the data merging unit are in communication connection with the data processing center.
2. The ac-dc hybrid scene application system of claim 1, wherein the power electronic transformer is connected to the control unit through an optical fiber, and the control unit comprises:
the signal acquisition module is used for acquiring voltage, current and temperature of the power electronic transformer during operation;
the input and output module is used for controlling the on and off of all switches of the power electronic transformer;
the software protection module is used for setting a protection strategy according to the collected operation data of the power electronic transformer, and performing loop protection through the number of users opening the input-output module and the operation signal locking when the operation is abnormal;
and the hardware protection module is used for isolating faults and protecting the power transformer as far as possible when the system is abnormally operated.
3. The AC/DC hybrid scene application system according to claim 2, wherein the control unit further comprises a communication module, and communication connections are respectively established between the power electronic transformer and the data processing center through the communication module.
4. The AC/DC hybrid scene application system of claim 1, wherein the input end of the power electronic transformer is introduced by a 10kV AC bus, and the output end of the power electronic transformer outputs lines of three different voltage levels, namely a 10kV DC bus, ± 375V DC bus and a 380V AC bus, for different combined application scene units respectively.
5. The AC/DC hybrid scene application system according to claim 4, wherein the combined application scene unit mainly comprises a battery energy storage unit and a photovoltaic power generation unit, and the battery energy storage unit and the photovoltaic power generation unit are connected to the 10kV DC bus in a parallel manner;
the battery energy storage unit is used for converting the voltage of a 10kV DC bus into 380V voltage through DC-DC change and supplying the 380V voltage to the storage battery for energy storage;
the photovoltaic power generation unit is used for converting the obtained direct current DC voltage into 10kV DC bus voltage through DC-DC conversion so as to provide a distributed power supply.
6. The AC/DC hybrid scene application system according to claim 4, wherein the combined application scene unit comprises a photovoltaic power generation unit, a charging pile unit and a DC load unit, and the photovoltaic power generation unit, the charging pile unit and the DC load unit are connected to the +/-375V DC bus in a parallel manner;
the photovoltaic power generation unit converts the obtained direct current DC voltage into the +/-375V DC bus voltage through DC-DC conversion;
the charging pile is connected to the +/-375V DC bus;
the direct current load comprises a direct current air conditioner, lighting and a direct current screen cabinet.
7. The AC-DC hybrid scene application system according to claim 3, wherein the combined application scene unit comprises a wind power generation unit, a photo-thermal power generation unit and an AC load unit, and the wind power generation unit, the photo-thermal power generation unit and the AC load unit are connected to a 380V AC bus in parallel;
the wind power generation unit converts the direct current DC voltage obtained by the wind power generation module into 380v AC bus voltage through DC-AC conversion;
the photo-thermal power generation unit converts the direct-current DC voltage obtained by the photo-thermal power generation module into 380v AC bus voltage through DC-AC conversion;
the AC load unit includes an AC light and an AC motor.
CN202011002740.0A 2020-09-22 2020-09-22 Alternating current-direct current hybrid scene application system Pending CN112134359A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012144357A1 (en) * 2011-04-18 2012-10-26 シャープ株式会社 Power supply device, control method for power supply device, and dc power supply system
CN105337273A (en) * 2015-09-18 2016-02-17 北京德意新能电气有限公司 Electric energy integration interconnection system suitable for smart power grid
CN207320834U (en) * 2017-10-12 2018-05-04 广东电网有限责任公司电力科学研究院 A kind of circuit topological structure of alternating current-direct current mixing distribution system
CN108494010A (en) * 2018-06-07 2018-09-04 北京四方继保自动化股份有限公司 Multipotency coordinated control system and method suitable for alternating current-direct current mixed distribution formula system
CN108736522A (en) * 2018-06-29 2018-11-02 北京四方继保自动化股份有限公司 The operation control system of alternating current-direct current mixed distribution formula system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012144357A1 (en) * 2011-04-18 2012-10-26 シャープ株式会社 Power supply device, control method for power supply device, and dc power supply system
CN105337273A (en) * 2015-09-18 2016-02-17 北京德意新能电气有限公司 Electric energy integration interconnection system suitable for smart power grid
CN207320834U (en) * 2017-10-12 2018-05-04 广东电网有限责任公司电力科学研究院 A kind of circuit topological structure of alternating current-direct current mixing distribution system
CN108494010A (en) * 2018-06-07 2018-09-04 北京四方继保自动化股份有限公司 Multipotency coordinated control system and method suitable for alternating current-direct current mixed distribution formula system
CN108736522A (en) * 2018-06-29 2018-11-02 北京四方继保自动化股份有限公司 The operation control system of alternating current-direct current mixed distribution formula system

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Application publication date: 20201225

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