CN108134393A - A kind of Regional Energy interconnection distribution network system based on electric energy route technology - Google Patents
A kind of Regional Energy interconnection distribution network system based on electric energy route technology Download PDFInfo
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- CN108134393A CN108134393A CN201810082641.4A CN201810082641A CN108134393A CN 108134393 A CN108134393 A CN 108134393A CN 201810082641 A CN201810082641 A CN 201810082641A CN 108134393 A CN108134393 A CN 108134393A
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
- H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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Abstract
The invention discloses a kind of Regional Energies based on electric energy route technology to interconnect distribution network system, and forming interconnection collection control layer, transformation sub-control layer, the Regional Energy that the integrated distribution of Interface Expanding layer is combined as the networking of core node equipment level using region electric energy router, transformation electric energy router and branch's electric energy router interconnects power distribution network.Region electric energy router accesses conventional electrical distribution net by middle pressure access via telephone line or feeder line, it carries out ac-dc conversion and forms middle pressure exchange, middle pressure looped network of DC power, transformation electric energy router is connected to middle pressure by middle pressure alternating current-direct current and network interface and exchanges, on middle pressure dc bus, have alternating current-direct current energy conversion and transformation ability, low-pressure side forms the AC and DC interface divided by function, and low-voltage AC/DC interface is expanded by branch's electric energy router.The present invention accesses conventional electrical distribution net with the networking of electric energy router level, can further promote distributed clean energy resource power generation permeability, the flexibility for meeting different user requirement and power supply reliability.
Description
Technical field
The invention belongs to energy internet and technical field of electricity, and electric energy route technology is based on more particularly, to one kind
Regional Energy interconnection distribution network system.
Background technology
In recent years, in order to alleviate the energy to become increasingly conspicuous, resource and environmental problem, a large amount of distribution type renewable energies generate electricity
Device is connected to the grid so that traditional power distribution network has expanded the function of power generation by simple function of supplying power.It is distributed for reply
Intermittence, dispersibility and the uncontrollability of energy power generation, improve the utilization rate of regenerative resource, and a large amount of energy storage devices add in power grid
To buffer energy fluctuation.The characteristics of generation mode has showed centralization, distribution and deposited, power flow is also drilled by one-way flow
Become multidirectional flowing.Flexible load using electric vehicle as representative adds in so that power flow and management become more complicated.
And current China's power distribution network terminal is still based on conventional electromagnetic transformer, continue to use feeder line or it is dendritic passively by
Electric mode, distribution net work structure do not have the ability of regulation and control of multidirectional power conveying with power equipment, lack energy pipe in power supply area
Manage adjusting device and information support system, it is difficult to meet photovoltaic, wind-powered electricity generation, energy storage, electric vehicle, user load and clean energy resource system
The requirement of system (cogeneration of heat and power, cold, heat and electricity triple supply etc.) flexible access can not regulate and control solve increasingly by various energy resources interaction
The intermittence of prominent generation of electricity by new energy and the randomness problem of user power utilization seriously constrain connecing extensively for regenerative resource
Enter, on-site elimination and high efficiency of energy utilize.Under intelligent grid and energy Background of Internet, the innovation Distribution Network Frame that proposes at present
Structure is that conventional electrical distribution net is completely reformed, it is difficult to access conventional electrical distribution net, realize that difficulty is big, of high cost.In order to adapt to distribution
Net new situation of development on the basis of existing power distribution network, is badly in need of from innovation distribution net work structure, exploitation by taking electric energy router as an example
Flexible controllable controller switching equipment, which sets out, establishes novel power-distribution architecture framework, mutually supports, complements one another with main distribution net power grid.
Invention content
For the disadvantages described above or Improvement requirement of the prior art, the present invention provides a kind of areas based on electric energy route technology
Domain energy source interconnection distribution network system, thus solves the innovation power distribution network framework proposed at present due to being complete to conventional electrical distribution net
Innovation, and caused by be difficult to access conventional electrical distribution net, realize the technical issues of difficulty is big, of high cost.
To achieve the above object, the present invention provides a kind of Regional Energy interconnection power distribution network systems based on electric energy route technology
System, including：Using region electric energy router as the interconnection collection control layer of core node equipment, using transformation electric energy router as core node
The transformation sub-control layer of equipment, using branch's electric energy router as the Interface Expanding layer of core node equipment；
The transformation electric energy router is respectively connected to institute by the first exchange and network interface and the first direct current and network interface
It states on middle pressure ac bus and middle pressure dc bus that region electric energy router is formed；Branch's electric energy router passes through branch
Electric energy router interface is connected to the transformation electric energy router；
The interconnection collection control layer, for being managed towards the operation control of the region electric energy router, energy scheduling with optimization
Reason and user service formulate generation schedule according to area's intra domain user power request, form electricity transaction market and handle transaction letter
Breath is interacted by the region electric energy router and external transmission and distribution network, is responsible for the Regional Energy interconnection power distribution network system
The energy exchange of system and the external transmission and distribution network and the failure that transmission and distribution network outside described is isolated；
The transformation sub-control layer, for realizing ac-dc conversion and transformation function by the transformation electric energy router, with
The low-voltage AC/DC plug and play interface divided by function is formed, is controlled by bi-directional current, implements the supply and distribution of electric energy,
It realizes that Distributed Autonomous is route with electric energy, management and control is carried out to the use of the plug and play interface；
The interface expands layer, for being expanded according to user demand into line interface, realizes distributed power generation, energy storage and family
With the access of flexible load equipment.
Preferably, critical point control of the region electric energy router as Regional Energy interconnection distribution network system, leads to
It crosses middle pressure special line or middle pressure feeder line is respectively connected to the external transmission and distribution network, both end power supplying, the middle pressure exchange in forming region is female
Wire loop net and middle pressure dc bus looped network, improve power supply reliability.
Preferably, the region electric energy router includes middle pressure rectification stage, middle pressure inverse cascade and the first energy buffer ring
Section has the exchange interface of the external external transmission and distribution network, and the exchange interface and DC interface of the transformation sub-control layer is inscribed,
Wherein, medium pressure rectification stage uses cascade structure, is responsible for the external transmission and distribution network and off-network is connect and two-way AC/DC
Transformation, when electric energy is more than needed in Regional Energy interconnection distribution network system, control power flow flows to the external power transmission and distribution
Net, medium pressure inverse cascade use cascade structure, are connected with medium pressure dc bus, provide industrial frequency AC circuit, and described the
One energy buffer link connects with medium pressure dc bus.
Preferably, subordinate equipment of the transformation electric energy router as the region electric energy router, in the transformation
The low-pressure side of electric energy router forms the exchange interface and DC interface divided by function.
Preferably, the transformation electric energy router includes mesohigh AC/DC rectification stages, DC/DC isolation levels, low voltage DC/AC
Inverse cascade, low voltage DC/DC multiport DC converting links and the second energy buffer link；
The mesohigh AC/DC rectification stages use cascade structure, for the alternating current circuit with the region electric energy router
And off-network connection and two-way AC/DC transformation, and through the middle pressure in medium pressure dc bus and the transformation electric energy router
DC electrical interface is attached, and provides high quality two-way middle pressure DC power distribution line bus interface；
The DC/DC isolation levels are used to implement medium-high frequency isolation using double active bridges topology of series connection input Parallel opertation
The two-way DC/DC transformation of type and voltage transformation；
The low voltage DC/AC inverse cascades use two level blocks, with the DC/DC isolation levels through low-voltage direct link phase
Even, low-voltage alternating-current interface is provided；
The low voltage DC/DC multiport DC converting links, for providing the low-voltage AC/DC interface divided by function；
The second energy buffer link, for flexibly coping with and Processing Interface generating equipment and the energy of load random fluctuation
Power improves the voltage stabilization and frequency stabilization ability of each port.
Preferably, the low-pressure side of the transformation electric energy router forms the exchange interface and DC interface divided by function,
Including：Low-voltage direct energy storage interface, distributed power generation DC interface, electric vehicle interface, DC load interface, branch's electric energy road
It is full by device interface, direct current general-purpose interface, low-voltage alternating-current cool and thermal power system interface, AC load interface and alternating current general-purpose interface
Sufficient low pressure AC and DC distributed power generation, energy storage, the access of load and its branch's electric energy router.
Preferably, branch's electric energy router includes the second exchange and network interface, the second direct current and network interface and company
Branch's electric energy router interface of the transformation electric energy router is connected to, expanding out multiple low-pressure sides by function division exchanges electricity consumption
Interface and direct current electrical interface.
Preferably, the region electric energy router, the transformation electric energy router and branch's electric energy router
AC and DC interface is integrated with electric interfaces and wired communication interface, forms the electrical standard of interface, information standard, protective standard
Plug and play designs, and has equipment quick sensing, information exchange and monitoring and fault insulation and resume function.
Preferably, the region electric energy router, the transformation electric energy router and branch's electric energy router
Inside has the double-layer structure of physical layer and application layer, wherein, physical layer includes a converters, plug and play is handed over
DC interface and communication module, application layer include electric energy router inside operation control, energy-optimised management, power prediction,
Utility power quality control, power purchase transaction or sale of electricity transaction, monitoring of equipment control and fault insulation and resume.
In general, by the above technical scheme conceived by the present invention relative to conventional radiation shape, the distribution of weak feeder line
Net has following technique effect：
(1) present invention is formed using electric energy router as the hierarchical level energy source interconnection power distribution network system of core node equipment
System by the network addressing and Route Selection of electric energy router node, realizes the multidirectional transmission optimization of energy, supports electric energy " certainly
From with, mutually Ji mutually supply, power grid is filled a vacancy, surplus is sent outside ", reach energy-saving and emission-reduction and reduce line loss the purpose of.
(2) present invention is used as critical point by region electric energy router and is controlled, and Regional Energy interconnection power distribution network is effectively accessed
Existing middle pressure AC distribution net, has ac-dc conversion and transformation ability, AC and DC looped network is pressed in formation, realize in net and coordinate
Control and autonomous management are improved with electricity consumption reliability.
(3) low-voltage AC/DC " plug and play " interface divided by function is formed, distributed new is generated electricity, is classified storage
Energy, electric vehicle, cold, heat and electricity triple supply, flexible load etc. are managed collectively, and are controlled by bi-directional current, and it is efficient to implement electric energy
Supply and distribution.
Description of the drawings
Fig. 1 is the system that a kind of Regional Energy based on route technology provided in an embodiment of the present invention interconnects distribution network system
Configuration diagram；
Fig. 2 is a kind of region electric energy router organization plan schematic diagram provided in an embodiment of the present invention；
Fig. 3 is a kind of transformation electric energy router organization plan schematic diagram provided in an embodiment of the present invention；
Fig. 4 is a kind of branch's electric energy router organization plan schematic diagram provided in an embodiment of the present invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
It does not constitute a conflict with each other and can be combined with each other.
The invention discloses a kind of Regional Energies based on electric energy route technology to interconnect distribution network system, with region electric energy road
By device, transformation electric energy router and branch's electric energy router interconnection collection control layer, transformation are formed for core node equipment level networking
The alternating current-direct current interconnection region energy source interconnection power distribution network that is combined of integrated distribution of sub-control layer, Interface Expanding layer.With electric energy router
Level networking accesses conventional electrical distribution net, can further promote distributed clean energy resource power generation permeability, meet different user requirement
Flexibility and power supply reliability.
As shown in Figure 1 distribution network system is interconnected for a kind of Regional Energy based on route technology provided in an embodiment of the present invention
Architectural framework schematic diagram, including：Using region electric energy router as the interconnection collection control layer of core node equipment, with transformation electric energy road
By the transformation sub-control layer that device is core node equipment, using branch's electric energy router as the Interface Expanding layer of core node equipment；
Transformation electric energy router is respectively connected to region electricity by the first exchange and network interface and the first direct current and network interface
On the middle pressure ac bus and middle pressure dc bus that energy router is formed；Branch's electric energy router is connect by branch's electric energy router
Mouth is connected to transformation electric energy router；
Top layer of the interconnection collection control layer as application layer, is responsible for the operation of regional distribution network internal system region electric energy router
And energy management, the operation control of facing area electric energy router, energy is dispatched and optimum management and user service, according to region
Interior user's power request formulates generation schedule, forms electricity transaction market and handles Transaction Information, passes through region electric energy router
Interacted with external transmission and distribution network, be responsible for Regional Energy interconnection distribution network system and external transmission and distribution network energy exchange and
The failure of the external transmission and distribution network of isolation, is the key that regional distribution network hinge, realizes and coordinate control and autonomous management in net, support
The operation mode of electric energy " generating power for their own use, mutually Ji mutually supplies, power grid is filled a vacancy, surplus is sent outside ".Concrete function is：Formulate generation schedule,
Purchase/sale of electricity transaction, energy management and optimization, interconnect with external main distribution net, coordinate control and autonomous management, dispatch command in net
Production, user's access service, network addressing and Route Selection, transmission optimization, relay protection and Fault Isolation, power quality controlling
Function.
Transformation sub-control level realizes ac-dc conversion and transformation work(to transformation electric energy router by transformation electric energy router
Can, to form the low-voltage AC/DC plug and play interface divided by function, have energy management and transmission optimization, purchase/sale of electricity is handed over
Easily, coordinate control and autonomous management, network addressing and Route Selection in subnet, perform dispatch command with electric energy with control, alternating current-direct current
Transformation and transformation, Distributed Autonomous, isolated island/grid-connected, to the use of plug and play interface, (access including plug and play interface is moved back
Go out and adjust) management and control, relay protection and Fault Isolation are carried out, power quality controlling simultaneously provides prison to region electric energy router
The services such as control, measurement, protection.
Interface expands level to branch's electric energy router, is expanded according to user demand into line interface, realize distributed power generation,
The access of energy storage, flexible load equipment and household alternating current-direct current load has energy management and transmission optimization, and purchase/sale of electricity is merchandised,
Network addressing and Route Selection, Distributed Autonomous, isolated island/grid-connected, access to plug and play interface are exited, adjust and carry out management and control,
Relay protection and Fault Isolation, and provide the services such as monitoring, measurement, protection to transformation electric energy router.
Preferably, it is route in embodiments of the present invention comprising two taiwan area domain electric energy routers, n (n >=2) platform transformation electric energy
Device, n (n >=2) platform branch electric energy router and Distributed-generation equipment, flexible load, energy storage device etc., wherein, more changes
Pressure electric energy router is parallel to the exchange 10kV of region electric energy router, on ± 10kV dc bus.
In an optional embodiment, critical point of the region electric energy router as Regional Energy interconnection distribution network system
Control is respectively connected to external transmission and distribution network (10kV AC) by middle pressure special line or middle pressure feeder line, both end power supplying, in forming region
Middle pressure ac bus (10kV AC), middle pressure dc bus (± 10kV DC), improve power supply reliability, alternating current-direct current ring are pressed in formation
Net and power bi-directional are controllable, and the access of AC and DC distributed power generation, energy storage, load and its transformation electric energy router is pressed in satisfaction.
Wherein, region electric energy router is the key that Regional Energy interconnection distribution network system hinge, in order to ensure region energy
Two region electric energy routers are configured in the safe and stable operation of source interconnection distribution network system, each region.Region electric energy router
It can be accessed in the external transmission and distribution network of different zones from the sectionalized busbar of different substation's 10kV feeder lines or 10kV feeder lines.
In an optional embodiment, region electric energy router organization plan is illustrated in figure 2, wherein, region electricity
Energy router includes middle pressure rectification stage, middle pressure inverse cascade and the first energy buffer link, has external outside transmission and distribution network
Interface (10kV) is exchanged, the ac bus (10kV) and dc bus (± 10kV) of transformation sub-control layer is inscribed, wherein, middle repoussage stream
Grade is responsible for external transmission and distribution network and off-network and connect and two-way AC/DC transformation, interconnected and matched in Regional Energy using cascade structure
When electric energy is more than needed in network system, the external transmission and distribution network of control power flow flow direction, middle pressure inverse cascade is using cascade structure, in
Pressure dc bus is connected, and provides industrial frequency AC circuit (10KV), the first energy buffer link and middle pressure dc bus (± 10kV)
Connect.
In an optional embodiment, subordinate equipment of the transformation electric energy router as region electric energy router, with
Region electric energy router difference lies in transformation link, it can be achieved that combined-voltage grade transformation.Transformation electric energy router
The exchange of middle pressure and network interface (10kV AC), middle straightening stream and network interface (± 10kV DC) be connected to region electric energy router shape
Into middle pressure ac bus and it is middle pressure dc bus on, low-pressure side formed by function divide exchange interface (380V AC, 220V
AC), direct current (400V DC) interface is accessed with meeting the various alternating current-direct current equipment high efficiency of type.
In an optional embodiment, transformation electric energy router structure is illustrated in figure 3, wherein, transformation electric energy road
Mesohigh AC/DC rectification stages, DC/DC isolation levels, low voltage DC/AC inverse cascades, low voltage DC/DC multiport DC convertings are included by device
Link and the second energy buffer link；
Mesohigh AC/DC rectification stages use cascade structure, for the alternating current circuit and off-network with region electric energy router
Connection and two-way AC/DC transformation, and dc bus is pressed to be carried out with the medium voltage DC gas interface in transformation electric energy router in passing through
Connection provides high quality two-way middle pressure DC power distribution line bus interface；
It is double to be used to implement medium-high frequency isolated form using double active bridges topology of series connection input Parallel opertation for DC/DC isolation levels
To DC/DC transformation and voltage transformation；
Low voltage DC/AC inverse cascades use two level blocks, are connected with DC/DC isolation levels through low-voltage direct link, provide low
Pressure exchange interface, the i.e. two-way industrial frequency AC electric lines of 380V；
Low voltage DC/DC multiport DC converting links, for providing low pressure (400V) AC and DC interface divided by function；
Second energy buffer link, for flexibly coping with and Processing Interface generating equipment and the ability of load random fluctuation,
Improve the voltage stabilization and frequency stabilization ability of each port.
In an optional embodiment, transformation electric energy router has what is connect with top area electric energy router
Simultaneously network interface, ± 10kV direct currents and network interface, transformation electric energy router are divided to form low-voltage alternating-current (380V by function for 10kV exchanges
AC, 220V AC), direct current (400V DC) interface, specially：It is low-voltage direct energy storage interface, distributed power generation DC interface, electronic
Automobile interface, DC load interface, branch's electric energy router interface, direct current general-purpose interface, low-voltage alternating-current cool and thermal power system interface,
AC load interface and alternating current general-purpose interface etc. meet low pressure AC and DC distributed power generation, energy storage, load and its branch's electricity
Transformation electric energy router self-energy Optimized Operation and stable operation control are responsible in the access of energy router.
In an optional embodiment, branch's electric energy router structure is illustrated in figure 4, wherein, branch's electric energy road
Including the second exchange and network interface (380V AC), the second direct current and network interface (400V DC) and transformation electric energy is connected to by device
Branch's electric energy router interface of router, by function division expand out multiple low-pressure side exchanges with electrical interface (380V AC,
220V AC) and direct current electrical interface (48V-400V DC), the access roof photovoltaic of relevant voltage grade and small wind decile
Cloth power generation, energy storage, electric household automobile, miniature cold, heat and power triple supply system, household alternating current-direct current load etc..
In an optional embodiment, region electric energy router, transformation electric energy router and branch's electric energy routing
The AC and DC interface of device is integrated with electric interfaces and wired communication interface, forms the electrical standard, information standard, protection mark of interface
Accurate plug and play design, has equipment quick sensing, information exchange and monitoring and fault insulation and resume function.
In an optional embodiment, region electric energy router, transformation electric energy router and branch's electric energy routing
The inside of device has the double-layer structure of physical layer and application layer, wherein, physical layer includes a converters, inserts i.e.
With AC and DC interface and communication module, it is pre- that application layer includes operation control inside electric energy router, energy-optimised management, power
Survey, utility power quality control, power purchase transaction or sale of electricity transaction, monitoring of equipment control and fault insulation and resume.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all any modification, equivalent and improvement made all within the spirits and principles of the present invention etc., should all include
Within protection scope of the present invention.
Claims (9)
1. a kind of Regional Energy interconnection distribution network system based on electric energy route technology, which is characterized in that including：With region electric energy
Router is the interconnection collection control layer of core node equipment, using transformation electric energy router as the transformation sub-control layer of core node equipment,
Using branch's electric energy router as the Interface Expanding layer of core node equipment；
The transformation electric energy router is respectively connected to the area by the first exchange and network interface and the first direct current and network interface
On the middle pressure ac bus and middle pressure dc bus that domain electric energy router is formed；Branch's electric energy router passes through branch's electric energy
Router interface is connected to the transformation electric energy router；
It is described interconnection collection control layer, for towards the operation control of the region electric energy router, energy scheduling with optimum management and
User service formulates generation schedule according to area's intra domain user power request, forms electricity transaction market and handles Transaction Information, leads to
It crosses the region electric energy router to interact with external transmission and distribution network, is responsible for the Regional Energy interconnection distribution network system and institute
State the energy exchange of external transmission and distribution network and the failure of the isolation external transmission and distribution network；
The transformation sub-control layer, for realizing ac-dc conversion and transformation function by the transformation electric energy router, to be formed
It by the low-voltage AC/DC plug and play interface that function divides, is controlled by bi-directional current, implements the supply and distribution of electric energy, realized
Distributed Autonomous is route with electric energy, and management and control is carried out to the use of the plug and play interface；
The interface expands layer, for being expanded according to user demand into line interface, realizes that distributed power generation, energy storage and household are soft
The access of property load equipment.
2. system according to claim 1, which is characterized in that the region electric energy router is mutual as the Regional Energy
Join the critical point control of distribution network system, the external transmission and distribution network is respectively connected to by middle pressure special line or middle pressure feeder line, both-end supplies
Electricity, middle pressure ac bus looped network and middle pressure dc bus looped network in forming region, improves power supply reliability.
3. system according to claim 2, which is characterized in that the region electric energy router include it is middle pressure rectification stage, in
Inverse cascade and the first energy buffer link are pressed, the transformation is inscribed in the exchange interface with the external external transmission and distribution network
The exchange interface and DC interface of sub-control layer, wherein, medium pressure rectification stage uses cascade structure, is responsible for and the external transmission ＆ distribution
Power grid and off-network connection and two-way AC/DC transformation, when electric energy is more than needed in Regional Energy interconnection distribution network system, control
Power flow flows to the external transmission and distribution network, and medium pressure inverse cascade uses cascade structure, with medium pressure dc bus phase
Even, industrial frequency AC circuit is provided, the first energy buffer link connects with medium pressure dc bus.
4. according to the system described in claims 1 to 3 any one, which is characterized in that the transformation electric energy router is as institute
The subordinate equipment of region electric energy router is stated, is connect in the exchange that the low-pressure side formation of the transformation electric energy router is divided by function
Mouth and DC interface.
5. system according to claim 4, which is characterized in that it is whole that the transformation electric energy router includes mesohigh AC/DC
Flow grade, DC/DC isolation levels, low voltage DC/AC inverse cascades, low voltage DC/DC multiport DC converting links and the second energy buffer
Link；
The mesohigh AC/DC rectification stages use cascade structure, for the alternating current circuit of the region electric energy router and
Off-network connects and two-way AC/DC transformation, and through the middle straightening stream in medium pressure dc bus and the transformation electric energy router
Electric interfaces are attached, and provide high quality two-way middle pressure DC power distribution line bus interface；
It is double to be used to implement medium-high frequency isolated form using double active bridges topology of series connection input Parallel opertation for the DC/DC isolation levels
To DC/DC transformation and voltage transformation；
The low voltage DC/AC inverse cascades use two level blocks, are connected with the DC/DC isolation levels through low-voltage direct link, carry
For low-voltage alternating-current interface；
The low voltage DC/DC multiport DC converting links, for providing the low-voltage AC/DC interface divided by function；
The second energy buffer link, for flexibly coping with and Processing Interface generating equipment and the ability of load random fluctuation,
Improve the voltage stabilization and frequency stabilization ability of each port.
6. system according to claim 4, which is characterized in that the low-pressure side of the transformation electric energy router is formed by function
The exchange interface and DC interface of division include：Low-voltage direct energy storage interface, distributed power generation DC interface, electric vehicle connect
Mouth, DC load interface, branch's electric energy router interface, direct current general-purpose interface, low-voltage alternating-current cool and thermal power system interface, exchange are negative
Lotus interface and alternating current general-purpose interface meet low pressure AC and DC distributed power generation, energy storage, load and its branch's electric energy router
Access.
7. system according to claim 6, which is characterized in that branch's electric energy router includes second and exchanges grid-connected connect
Mouth, the second direct current and network interface and the branch's electric energy router interface for being connected to the transformation electric energy router, are drawn by function
Divide and expand out multiple low-pressure side exchange electrical interfaces and direct current electrical interface.
8. system according to claim 7, which is characterized in that the region electric energy router, transformation electric energy routing
The AC and DC interface of device and branch's electric energy router is integrated with electric interfaces and wired communication interface, forms the electricity of interface
The plug and play design of gas standard, information standard, protective standard has equipment quick sensing, information exchange and monitoring and event
Phragma is from restoring function.
9. system according to claim 8, which is characterized in that the region electric energy router, transformation electric energy routing
The inside of device and branch's electric energy router has the double-layer structure of physical layer and application layer, wherein, physical layer includes one
Secondary converters, plug and play AC and DC interface and communication module, application layer include the operation inside electric energy router
Control, energy-optimised management, power prediction, utility power quality control, power purchase transaction or sale of electricity transaction, monitoring of equipment control and event
Phragma from recovery.
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| CN110048411A (en) * | 2019-04-23 | 2019-07-23 | 广东电网有限责任公司 | Micro-grid method, apparatus and equipment based on multiport electric energy router |
| CN110620400A (en) * | 2019-09-30 | 2019-12-27 | 广西电网有限责任公司电力科学研究院 | Electric energy conversion equipment and intelligent power distribution network friendly interaction technology system |
| CN110649661A (en) * | 2019-09-29 | 2020-01-03 | 西华大学 | Low-voltage annular micro-grid control system and method based on virtual synchronous generator |
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