CN104410076B - Distributed energy network system, microgrid, network scheduling system and forming method thereof - Google Patents
Distributed energy network system, microgrid, network scheduling system and forming method thereof Download PDFInfo
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- CN104410076B CN104410076B CN201410765141.2A CN201410765141A CN104410076B CN 104410076 B CN104410076 B CN 104410076B CN 201410765141 A CN201410765141 A CN 201410765141A CN 104410076 B CN104410076 B CN 104410076B
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/14—District level solutions, i.e. local energy networks
Abstract
The invention discloses a distributed energy network system, a microgrid, a network scheduling system and a forming method thereof, relates to the technical field of distributed energy and aims at effectively improving the utilizing rate of energy in each microgrid. The distributed energy network system comprises a plurality of microgrids, the network scheduling system and connecting lines, wherein the connecting lines are used for connecting the microgrids, respective running data are sent to the network scheduling system by the microgrids, and whether two microgrids in all the microgrids meet interconnection conditions or not is determined by the network scheduling system according to the received running data of each microgrid; if two microgrids are determined to meet the interconnection conditions, a control command is sent to the two microgrids to instruct the two microgrids to execute interconnection, and accordingly, energy trading between the two microgrids can be controlled. The distributed energy network system is suitable for distributed energy technologies.
Description
Technical field
The present invention relates to distributed energy technical field, more particularly to distributed energy network system, microgrid, network scheduling
System and forming method thereof.
Background technology
Distributed energy resource system, different from the energy resource system of traditional centralized energy supply, refer to by cold heat electric system with
On a small scale, low capacity, modularity, distributed mode are directly installed on user side, can independently export hot and cold, electric energy etc.
System.
Microgrid is also referred to as distributed energy islanded system, is a kind of important Land use systems of distributed energy technology.It is micro-
Net is referred to multiple loads and multiple distributed power sources according to certain topological structure composition micronet, and passes through static switch
Associate to normal grid.In prior art, microgrid has certain space independence, can provide adjustable for local power system
Degree load, can respond within the several seconds to meet system needs, provide strong support to bulk power grid in good time；And can be in dimension
System is repaiied while not affecting the load of client.And for user, microgrid also can meet use as a customizable power supply
The diversified demand in family.
But, inventor has found prior art, and at least there are the following problems：At the beginning of stating distributed energy resource system in design
When each microgrid in can scale and with can rule can match substantially, but elapse over time, as microgrid is with one
Fixed space independence, which is likely to no longer match with energy scale and with the supply and demand of energy rule, has thereby resulted in the energy of microgrid
The not high problem of utilization rate.
The content of the invention
The embodiment of the present invention provides a kind of distributed energy network system, microgrid, network scheduling system and forming method thereof,
The problem that the energy utilization rate of microgrid can be overcome not high.
The embodiment of the present invention is adopted the following technical scheme that：
A kind of microgrid interacted system, the system include multiple microgrids, network scheduling system and interconnection, the contact
Line is used to connect microgrid, wherein,
The microgrid is used for：
The service data of the microgrid is sent to into network scheduling system, is determined so as to the network scheduling system described
Whether microgrid meets interconnection condition；
Receive the control instruction that the network scheduling system sends；
According to the control instruction of the reception, close a floodgate interconnection with another microgrid, with realize and described another microgrid it
Between power exchange；
The network scheduling system is used for：
Receive the service data that each microgrid sends；
According to the service data of each microgrid of the reception, it is determined that whether two microgrids in described each microgrid meet
Interconnection condition；
If it is determined that described two microgrids meet interconnection condition, send control instruction to indicate described two to described two microgrids
Individual microgrid performs interconnection such that it is able to control the power exchange between described two microgrids.
A kind of microgrid, the microgrid include：
Transmitting element, for the service data of the microgrid is sent to the network scheduling in distributed energy network
So as to the network scheduling system, system, determines whether the microgrid meets interconnection condition；
Receiving unit, for receiving the control instruction that the network scheduling system sends；
Interconnection unit, for the control instruction according to the reception, is closed a floodgate interconnection with another microgrid, with realize with it is described
Power exchange between another microgrid.
A kind of network scheduling system, it is characterised in that the network scheduling system includes：
Receiving unit, for receiving the service data that each microgrid sends；
Determining unit, the service data of each microgrid for being received according to the receiving unit, it is determined that described, each is micro-
Whether two microgrids in net meet interconnection condition；
Transmitting element, if determining that described two microgrids meet interconnection condition for the determining unit, to described two micro-
Net sends control instruction and performs interconnection to indicate described two microgrids such that it is able to which the energy controlled between described two microgrids is handed over
Easily.
A kind of forming method of distributed energy network, is applied to microgrid, including：
The service data of the microgrid is sent to into network scheduling system, is determined so as to the network scheduling system described
Whether microgrid meets interconnection condition；
Receive the control instruction that the network scheduling system sends；
According to the control instruction of the reception, close a floodgate interconnection with another microgrid, with realize and described another microgrid it
Between power exchange.
A kind of forming method of distributed energy network, is applied to network scheduling system, including：
Receive the service data that each microgrid sends；
According to the service data of each microgrid of the reception, it is determined that whether two microgrids in described each microgrid meet
Interconnection condition；
If it is determined that described two microgrids meet interconnection condition, send control instruction to indicate described two to described two microgrids
Individual microgrid performs interconnection such that it is able to control the power exchange between described two microgrids.
Distributed energy network system provided in an embodiment of the present invention, microgrid, network scheduling system and forming method thereof, its
In, distributed energy network system includes multiple microgrids, network scheduling system and interconnection, and interconnection is used to connect microgrid,
Wherein, the service data of itself is sent to network scheduling system by microgrid, and network scheduling system is according to each microgrid for receiving
Service data, determines whether two microgrids in each microgrid meet interconnection condition；If it is determined that two microgrids meet interconnection condition,
Control instruction is sent to described two microgrids and interconnection is performed to indicate described two microgrids, so as to network scheduling system can be controlled
Power exchange between described two microgrids.It will thus be seen that increased network scheduling system can be according to the fortune of each microgrid
Whether row data are controlling to interconnect between microgrid so as to dispatch or redistribute the use energy of each microgrid.And by network scheduling system
System judges the opportunity of interconnection, by microgrid on the spot control system performing operation, this function is split obtains the advantage of two systems
Performance is arrived, control system undertakes quick, reliable control to microgrid on the spot.In addition, the interconnection technique between this microgrid, makes microgrid
Spatial locality present in prior art is breached, can be carried out in distributed energy network widely mutual with energy supply and demand
It is dynamic, so as to effectively improve the energy utilization rate in each microgrid.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be to using needed for embodiment description
Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, can be obtaining other according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of system architecture schematic diagram of the distributed energy network system that the embodiment of the present invention one is provided；
Fig. 2 is a kind of electrical communication schematic diagram between microgrid in the system shown in Fig. 1；
Fig. 3 is a kind of structural representation of the microgrid that the embodiment of the present invention two is provided；
Fig. 4 is a kind of structural representation of the network scheduling system that the embodiment of the present invention three is provided；
Fig. 5 is a kind of schematic flow sheet of forming method of the distributed energy network that the embodiment of the present invention four is provided；
Fig. 6 is a kind of schematic flow sheet of forming method of the distributed energy network that the embodiment of the present invention five is provided.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Embodiment one
The embodiment of the present invention one provide a kind of microgrid interacted system 10, as shown in figure 1, microgrid interacted system 10 include it is many
Individual microgrid 11A, 11B ... 11N, network scheduling system 12 and interconnection 13, interconnection 13 are used to connect microgrid, for example, such as
Interconnection 13 connection microgrid 11A and 11B shown in Fig. 1.Wherein,
Microgrid 11A is used for：
The service data of microgrid 11A is sent to into network scheduling system 12, microgrid is determined so as to network scheduling system 12
Whether 11A meets interconnection condition；
Receive the control instruction that network scheduling system 12 sends；
According to the control instruction of the reception, close a floodgate interconnection with another microgrid, with realize and described another microgrid it
Between power exchange；
Network scheduling system 12 is used for：
Receive the service data of each microgrid 11A, 11B ... 11N transmissions；
According to the service data of each microgrid for receiving, determine whether two microgrids in each microgrid meet interconnecting strip
Part；
If it is determined that two microgrids meet interconnection condition, control instruction is sent to described two microgrids described two micro- to indicate
Net performs interconnection such that it is able to control the power exchange between described two microgrids.
Wherein, the service data of microgrid itself includes total real-time active power, total reactive power power, public grid-connected
The real-time three-phase voltage meansigma methodss of point, the realtime power factor of public grid entry point, current total active power scalable upper and lower region
Between, current total reactive power scalable it is interval up and down.
Wherein, the control instruction that network scheduling system sends includes active power instruction and reactive power instruction.Wattful power
Rate instruction is specially network scheduling system and assigns the active power interval in microgrid following a period of time；Reactive power instruction is concrete
The reactive power assigned for network scheduling system in microgrid following a period of time is interval.
Wherein, optionally, two microgrids meet interconnection condition and are specially between two microgrids demand for interconnection and described two
Microgrid is met with frequency combined floodgate requirement.
The microgrid interacted system 10 that the embodiment of the present invention one is provided, the system 10 include multiple microgrid 11A, 11B ...
11N, network scheduling system 12 and interconnection 13, interconnection 13 are used to connect microgrid, wherein, microgrid 11A, 11B ... 11N will
The service data of itself is sent to network scheduling system 12, operation number of the network scheduling system 12 according to each microgrid for receiving
According to determining whether two microgrids in each microgrid meet interconnection condition；If it is determined that two microgrids meet interconnection condition, to described
Two microgrids send control instructions and perform interconnection to indicate described two microgrids, can control so as to network scheduling system 12 described in
Power exchange between two microgrids.It will thus be seen that increased network scheduling system can be according to the operation number of each microgrid
According to controlling whether to interconnect between microgrid so as to dispatch or redistribute the use energy of each microgrid.And sentenced by network scheduling system
The opportunity of disconnected interconnection, by microgrid on the spot control system performing operation, this function is split obtains the advantage of two systems
Play, control system undertakes quick, reliable control to microgrid on the spot.In addition, the interconnection technique between this microgrid, breaks through microgrid
Spatial locality present in prior art, can carry out in distributed energy network widely with can supply and demand it is interactive,
So as to effectively improve the energy utilization rate in each microgrid.
Alternatively, in one particular embodiment of the present invention, if microgrid includes generating equipment, interconnection 13 is included
Power tie line 131, now, the low-voltage bus bar of the generating equipment of microgrid is connected with power tie line 131；If the microgrid bag
Heating equipment is included, then the interconnection 13 includes heating power interconnection 132, now, Trunk Line and the heat of the heating equipment of microgrid
Power interconnection 132 is connected.
Further, in one particular embodiment of the present invention, power tie line 131, microgrid are included in interconnection 13
Generating equipment low-voltage bus bar be connected with power tie line in the case of, transformation can be provided with power tie line 131
Device.Wherein the specification of the transformator can be 600KVA, 10KV:The transformator of 0.4KV.For example, the microgrid with reference to shown in Fig. 2
Between the electrical communication figure that interconnects, transformator is arranged on power tie line, and the both sides of transformator are provided with switch K1 and K2,
Its breaker in middle K1 switchs K2 by the right side microgrid control break-make in figure by the left side microgrid control break-make in figure.
This link lines design for being picked out through transformator again, can carry out phase angle by transformator and be coupled adjustment and voltage change
Than adjustment, the different power supply area in opposite end can be widely adapted to, not affect original electric power system of opposite end, and economic transmission
Distance is up to several kilometers.And, the design of above-mentioned design and China urban power distribution network and operations specification match, and the two has very
High compatibility, it is adaptable to various project situations.
Alternatively, in one particular embodiment of the present invention, each microgrid 11 and network scheduling system 12 with system
One interface, so that each microgrid 11 is adjusted to the service data and network that network scheduling system 12 sends unified mathematics form
The parameter that degree system 12 is carried when order is sent to each microgrid 11 is also sent with consistent mathematics form.
Wherein, specifically, only eight parameters can be simplified with the interface related parameter, including foregoing microgrid
The total reactive power power of the total real-time active power of system, micro-grid system, the real-time three-phase voltage of the public grid entry point of microgrid
The upper and lower interval of the current total active power scalable of meansigma methodss, the realtime power factor of the public grid entry point of microgrid, micro-grid system,
Interval, network scheduling system assigns having in microgrid following a period of time to the current total reactive power scalable of micro-grid system up and down
The reactive power that work(power interval, network scheduling system were assigned in microgrid following a period of time is interval.Thus only lead to too small amount of
Parameter come realize close friend dispatch interface.
By above-mentioned interface, microgrid reports the generation schedule and generating capacity of network scheduling system oneself, network scheduling
System assigns active power and reactive power instruction in the range of generating capacity.No matter the internal junction of microgrid and network scheduling system
Structure how, and microgrid is all with same interface and network scheduling system interfaces.
Alternatively, after the control instruction that network scheduling system 12 sends is received, microgrid 11A can be specifically for：
The voltage magnitude of the microgrid side is adjusted, and determines the voltage-phase and another microgrid of the microgrid side
The difference of voltage-phase；
When the voltage magnitude of the microgrid side is adjusted in default amplitude range, and the voltage-phase of the microgrid side
When being defined in default phase range with the difference of the voltage-phase of another microgrid, with described another microgrid
Complete interconnection of closing a floodgate.
Specifically, after the control instruction that network scheduling system 12 sends is received, before microgrid closes a floodgate, first to microgrid side
Voltage magnitude be finely adjusted, i.e., somewhat increase or somewhat reduce voltage magnitude cause voltage magnitude in default amplitude range
It is interior.For example, reduce the 2%-5% of voltage magnitude, make the 95%- that voltage magnitude of the microgrid before combined floodgate is original voltage magnitude
98%；Again for example, increase the 2%-5% of voltage magnitude, make voltage magnitude of the microgrid before combined floodgate be original voltage magnitude
102%-105%.Simultaneously as the voltage-phase of 11 side of microgrid is changed over, thus the voltage-phase of microgrid 11A sides with
The difference of the voltage-phase of another microgrid 11B is also change, and the voltage-phase thus waited by microgrid 11A sides is micro- with another
The difference of the voltage-phase of net 11B is in default phase range.Afterwards, microgrid 11A could be interconnected with microgrid 11B.
" two microgrids meet interconnection condition and are specially between two microgrids has demand for interconnection and described two microgrids meet same
Frequency closes a floodgate and requires " on the basis of, alternatively, network scheduling system 12 can be specifically for：
Analysis judge two microgrids in each microgrid it is following for a period of time in supply and demand complementary case, to determine two
Whether microgrid has demand for interconnection；
When it is determined that two microgrids have demand for interconnection, it is determined that whether meet between two microgrids and require with frequency combined floodgate；
If meet to close a floodgate with frequency between described two microgrids requiring, send control instructions to two microgrids with indicate two it is micro-
Net performs interconnection.
In this step, supply and demand of two microgrids in each microgrid described in analysis judgement within following a period of time is mutually repaid a kindness
Condition can be specifically, network scheduling system combines data, and being often separated by a period of time to each microgrid carries out power prediction, and according to work(
Rate predicts the outcome and analyzes the generating capacity and electric power for judging two microgrids in interior each microgrid of following a period of time, thus really
Determine supplier's microgrid and demanding party's microgrid.Specifically, network scheduling system is often separated by one section according to conditions such as weather, historical datas
Time carries out the power prediction of the systems such as microgrid.15 minute level, 2 hour level may be configured as at set intervals wherein, 24 hours
Level, the prediction of 48 hours levels, four time intervals.Then, network scheduling system can differentiate following one according to power prediction result
The generating capacity and electric power of each microgrid in the section time.A certain setting threshold of the generating capacity of microgrid more than electric power
Value, determines that the microgrid is supplier's microgrid, it is preferable that the threshold value should be designed to more than the 50% of rated power.Meanwhile, if micro-
A certain given threshold of the generating capacity of net less than electric power, it may be determined that the microgrid is demanding party's microgrid, it is preferable that the threshold value should
It is designed to less than the 20% of rated power.Additionally, what generating capacity and electric power took is prediction in following a period of time
Meansigma methodss.Following a period of time can be specifically set according to practical situation by those skilled in the art, and be for example set to future 4 are little
When etc..
Embodiment two
The embodiment of the present invention two provides a kind of microgrid 21, as shown in figure 3, microgrid 21 includes：
Transmitting element 211, the network for being sent to the service data of microgrid 21 in distributed energy network are adjusted
So as to the network scheduling system, degree system, determines whether the microgrid meets interconnection condition；
Receiving unit 212, for receiving the control instruction of network scheduling system transmission；
Interconnection unit 213, for the control instruction received according to receiving unit 212, is closed a floodgate with another microgrid and is interconnected, with
Realize and the power exchange between described another microgrid.
The microgrid 21 that the embodiment of the present invention two is provided, the microgrid 21 include：Transmitting element 211, for by the microgrid
Service data is sent to the network scheduling system in distributed energy network, so that the network scheduling system is to determine
State whether microgrid meets interconnection condition；Receiving unit 212, for receiving the control instruction that the network scheduling system sends；Mutually
Receipts or other documents in duplicate unit 213, for the control instruction according to the reception, is closed a floodgate interconnection with another microgrid, with realize with it is described another
Power exchange between microgrid.It will thus be seen that increase network scheduling system can according to the service data of each microgrid come
Whether interconnect between control microgrid so as to dispatch or redistribute the use energy of each microgrid.Interconnection technique between this microgrid, makes
Microgrid breaches spatial locality present in prior art, and wider use can be carried out in distributed energy network can supply
Interaction is needed, so as to effectively improve the energy utilization rate in each microgrid.
Alternatively, in one particular embodiment of the present invention, interconnection unit 213 specifically for：
According to the control instruction that receiving unit 212 is received, the voltage magnitude of the microgrid side is adjusted, and determines the microgrid
The difference of the voltage-phase of side and the voltage-phase of another microgrid；
When the voltage magnitude of the microgrid side is adjusted in default amplitude range, and the voltage-phase of the microgrid side
When being defined in default phase range with the difference of the voltage-phase of another microgrid, with described another microgrid
Interconnection of closing a floodgate is completed, with the power exchange realized and between described another microgrid.
Embodiment three
The embodiment of the present invention three provides a kind of network scheduling system 31, as shown in figure 4, network scheduling system 31 includes：
Receiving unit 311, for receiving the service data that each microgrid sends；
Determining unit 312, the service data of each microgrid for being received according to the receiving unit, it is determined that it is described each
Whether two microgrids in microgrid meet interconnection condition；
Transmitting element 313, if determining that described two microgrids meet interconnection condition for the determining unit, to described two
Microgrid sends control instruction and performs interconnection to indicate described two microgrids such that it is able to control the energy between described two microgrids
Transaction.
The network scheduling system 31 that the embodiment of the present invention three is provided, the network scheduling system 31 include：According to receiving unit
The service data of 311 each microgrid for receiving, determining unit 312 determine whether two microgrids in described each microgrid meet mutually
Bracing part；Transmitting element 313, for if it is determined that unit 312 determines that described two microgrids meet interconnection condition, to described two micro-
Net sends control instruction and performs interconnection to indicate described two microgrids such that it is able to which the energy controlled between described two microgrids is handed over
Easily.It will thus be seen that whether increased network scheduling system can be controlled according to the service data of each microgrid between microgrid
Interconnect so as to dispatch or redistribute the use energy of each microgrid.Interconnection technique between this microgrid, makes microgrid breach existing skill
Spatial locality present in art, can be carried out in distributed energy network widely with energy supply and demand interaction, so as to effective
Improve the energy utilization rate in each microgrid.
Alternatively, in one particular embodiment of the present invention, above-mentioned interconnection condition is specifically, have between described two microgrids
Demand for interconnection and the same frequency combined floodgate requirement of described two microgrids satisfaction.
Further, in one particular embodiment of the present invention, determining unit 312 specifically for：
First, supply and demand complementary case of two microgrids in each microgrid described in analysis judgement within following a period of time,
To determine whether described two microgrids have demand for interconnection.
Wherein, above-mentioned steps are really the prediction steps to microgrid active power.During analysis judges described each microgrid
Supply and demand complementary case of two microgrids within following a period of time can be micro- to each specifically, network scheduling system combines data
Net is often separated by, and judges two microgrids in following a period of time according to power prediction interpretation of result
The generating capacity and electric power of interior each microgrid, thereby determines that supplier's microgrid and demanding party's microgrid.
Specifically, according to conditions such as weather, historical datas, be often separated by carries out microgrid etc. to network scheduling system for a period of time
The power prediction of system.15 minute level, 2 hour level, 24 hour level, 48 hour level four are may be configured as at set intervals wherein
The prediction of time interval.Generally prediction at least requires the accuracy 75%, and accuracy is then according to predictive value and actual value
Average relative error value calculate.
Network scheduling system according to power prediction result, can differentiate in following a period of time the generating capacity of each microgrid and
Electric power.The generating capacity of microgrid determines that the microgrid is supplier's microgrid, preferably more than a certain given threshold of electric power
Ground, the threshold value should be designed to more than 50%.Meanwhile, if the generating capacity of microgrid is less than a certain setting threshold of electric power
Value, it may be determined that the microgrid is demanding party's microgrid, it is preferable that the threshold value should be designed to less than 20%.
What generating capacity and electric power took is the predicted mean vote in following a period of time.Following a period of time can be arranged
For following 15 minutes, 2 hours, 4 hours, 24 hours, 48 hours etc..
It should be noted that, two microgrids it is analyzed judgement its supply and demand complementary case before, can be chosen between two away from
From less than predetermined threshold value microgrid, e.g., less than 10 kilometers such that it is able to the microgrid analyzed the microgrid and close on the microgrid
Between supply/demand.Additionally, can also set the two microgrids to be required for meeting other conditions for being conducive to energy to interconnect, for example
Conveying below energy 2MW.
Secondly, when it is determined that two microgrids have demand for interconnection, it is determined that whether meet between described two microgrids with frequency
Close a floodgate and require.
In this case, transmitting element 313 specifically for：
If meet to close a floodgate with frequency between two microgrids requiring, send control instruction to indicate described two to described two microgrids
Individual microgrid performs interconnection.
Specifically, to meet the electric voltage frequency that can be specially two microgrid sides with the requirement of frequency combined floodgate identical for two microgrids.Work as institute
State two microgrid sides electric voltage frequency it is identical when, network scheduling system sends control instruction indicating two to described two microgrids
Microgrid performs interconnection.If the electric voltage frequency of two microgrid sides is different, network scheduling system would not instruct that the two microgrids are performed
Interconnection.
Example IV
The embodiment of the present invention four provides a kind of forming method of distributed energy network, is applied to microgrid, such as Fig. 5 institutes
Show, the method is comprised the following steps：
The service data of itself is sent to network scheduling system by S41, microgrid, is determined so as to network scheduling system described
Whether microgrid meets interconnection condition.
Wherein, the service data of microgrid itself includes total real-time active power, total reactive power power, public grid-connected
The real-time three-phase voltage meansigma methodss of point, the realtime power factor of public grid entry point, current total active power scalable upper and lower region
Between, current total reactive power scalable it is interval up and down.
S42, microgrid receive the control instruction that network scheduling system sends.
Wherein, the control instruction that network scheduling system sends includes active power instruction and reactive power instruction, wherein, have
Work(power instruction is specially network scheduling system and assigns the active power interval in microgrid following a period of time；Reactive power is instructed
The reactive power that specially network scheduling system was assigned in microgrid following a period of time is interval.
S43, microgrid complete close a floodgate interconnection with another microgrid according to the control instruction for receiving, another with described to realize
Power exchange between individual microgrid.
Specifically, microgrid completes close a floodgate interconnection with another microgrid according to the control instruction for receiving.Then, when supply and demand is micro-
When electric energy transmission is carried out between net, electric energy meter can be equiped with interconnection, the data of electric energy meter can be sent to network in real time
Scheduling system.From the beginning of microgrid interconnection, end is untied to microgrid interconnection, the incremental data of demanding party's side electric energy meter is this friendship
Easy electric flux.
Wherein, alternatively, in one particular embodiment of the present invention, S43 specifically includes following steps：
431st, microgrid adjusts the voltage magnitude of the microgrid side, and determines the microgrid side according to the control instruction for receiving
Voltage-phase and the voltage-phase of another microgrid difference；
432nd, when the voltage magnitude of the microgrid side is adjusted in default amplitude range, and the voltage of the microgrid side
When the difference of phase place and the voltage-phase of another microgrid is defined in default phase range, with it is described another
Microgrid completes interconnection of closing a floodgate.
Wherein, after the control instruction that network scheduling system sends is received, before microgrid closes a floodgate, the electricity first to microgrid side
Pressure amplitude value is finely adjusted, i.e., somewhat increase or somewhat reduction voltage magnitude causes voltage magnitude in default amplitude range.Example
Such as, reduce the 2%-5% of voltage magnitude, be allowed to the 95%-98% that voltage magnitude of the microgrid before combined floodgate is original voltage magnitude；
Again for example, increase the 2%-5% of voltage magnitude, be allowed to the 102%- that voltage magnitude of the microgrid before combined floodgate is original voltage magnitude
105%.Simultaneously as the voltage-phase of microgrid side is changed over, therefore the voltage-phase of microgrid side and another microgrid
The difference of voltage-phase is also change, the difference of the voltage-phase thus waited by microgrid side and the voltage-phase of another microgrid
Value is in default phase range.Afterwards, microgrid could be interconnected with microgrid.
The embodiment of the present invention four provides a kind of forming method of distributed energy network, is applied to microgrid, and the microgrid will be from
The service data of body is sent to network scheduling system, determines whether microgrid meets interconnecting strip so as to the network scheduling system
Part, then, receives the control instruction that the network scheduling system sends, and according to the control instruction of the reception, with another
Microgrid completes interconnection of closing a floodgate, with the power exchange realized and between another microgrid.Thus, the interconnection technique between this microgrid,
Make microgrid breach spatial locality present in prior art, energy can be widely used in distributed energy network
Supply and demand is interactive, so as to effectively improve the energy utilization rate in each microgrid.
Embodiment five
The embodiment of the present invention five provides a kind of forming method of distributed energy network, is applied to network scheduling system,
As shown in fig. 6, the method is comprised the following steps：
S51, network scheduling system receive the service data that each microgrid sends；
S52, according to the service data of each microgrid of the reception, network scheduling system determine described in each microgrid
Whether two microgrids meet interconnection condition；
Alternatively, described two microgrids meet interconnection condition specifically, there is demand for interconnection and described between described two microgrids
Two microgrids are met with frequency combined floodgate requirement.Wherein it is preferred to, two microgrids meet close a floodgate with frequency require to be specially two again it is micro-
The electric voltage frequency of net is identical.
S53, if it is determined that two microgrids meet interconnection condition, network scheduling system sends control instruction to described two microgrids
To indicate that described two microgrids perform interconnection such that it is able to control the power exchange between described two microgrids.
The embodiment of the present invention five provides a kind of forming method of distributed energy network, is applied to network scheduling system, should
Network scheduling system receives the service data that each microgrid sends, and the service data of each microgrid according to the reception, really
Whether two microgrids in fixed described each microgrid meet interconnection condition.If it is determined that two microgrids meet interconnection condition, network is adjusted
Degree system sends control instruction to described two microgrids and performs interconnection to indicate described two microgrids such that it is able to control described two
Power exchange between individual microgrid.The network scheduling system of increase can be controlled according to the service data of each microgrid microgrid it
Between whether interconnect so as to dispatch or redistribute the use energy of each microgrid.Interconnection technique between this microgrid, breaches microgrid
Spatial locality present in prior art, can carry out widely using energy supply and demand interactive in distributed energy network, from
And effectively improve the energy utilization rate in each microgrid.
Further, in one particular embodiment of the present invention, " two microgrids meet interconnection condition and are specially two
Have demand for interconnection between microgrid and described two microgrids met with frequency combined floodgate requirement " on the basis of, each is determined in abovementioned steps S52
Whether two microgrids in microgrid meet interconnection condition specifically includes following steps：
521st, supply and demand complementary case of two microgrids in each microgrid described in analysis judgement within following a period of time, with
Determine whether described two microgrids have demand for interconnection；
522nd, when it is determined that described two microgrids have demand for interconnection, it is determined that whether meet same between described two microgrids
Frequency closes a floodgate and requires；
In this case, step S53 is specially：
If meet to close a floodgate with frequency between described two microgrids requiring, control instruction is sent to indicate to described two microgrids
State two microgrids and perform interconnection.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by the scope of the claims.
Claims (9)
1. a kind of distributed energy network system, it is characterised in that the distributed energy network system includes that at least two is micro-
Net, network scheduling system and interconnection, the interconnection are used to connect microgrid, wherein,
The microgrid is used for：
The service data of the microgrid is sent to into network scheduling system, the microgrid is determined so as to the network scheduling system
Whether interconnection condition is met；
Receive the control instruction that the network scheduling system sends；
According to the control instruction for receiving, close a floodgate with another microgrid and interconnect, with the energy realized and between described another microgrid
Transaction；
The network scheduling system is used for：
Receive the service data that each microgrid sends；
According to the service data of each microgrid for receiving, it is determined that whether two microgrids in described each microgrid meet interconnecting strip
Part；
If it is determined that described two microgrids meet interconnection condition, control instruction is sent to described two microgrids described two micro- to indicate
Net performs interconnection, can control then the power exchange between described two microgrids；
Wherein, the interconnection condition is specifically, have demand for interconnection and the same frequency conjunction of described two microgrids satisfaction between described two microgrids
Lock require, the network scheduling system specifically for：
According to the real-time running data of each microgrid, two microgrids in each microgrid described in analysis judgement are in following a period of time
Interior supply and demand complementary case, to determine whether described two microgrids have demand for interconnection；
When it is determined that described two microgrids have demand for interconnection, it is determined that whether meet to close a floodgate with frequency between described two microgrids and want
Ask；
If meet to close a floodgate with frequency between described two microgrids requiring, send control instruction to indicate described two to described two microgrids
Individual microgrid performs interconnection.
2. distributed energy network system according to claim 1, it is characterised in that
If the microgrid includes generating equipment, the interconnection includes power tie line,
The low-voltage bus bar of the generating equipment is connected with the power tie line；
If the microgrid includes heating equipment, the interconnection includes heating power interconnection,
The Trunk Line of the heating equipment is connected with the heating power interconnection.
3. distributed energy network system according to claim 1 and 2, it is characterised in that described each microgrid and described
Network scheduling system has unified interface, so that described each microgrid sends unified mathematics form to the network scheduling system
Service data and the parameter that carries when order is sent to described each microgrid of the network scheduling system also with consistent
Mathematics form sends.
4. distributed energy network system according to claim 2, it is characterised in that include that electric power joins in the interconnection
Winding thread, in the case that the low-voltage bus bar of the generating equipment is connected with the power tie line, on the power tie line
Transformator is provided with, to improve compatibility of the microgrid in interconnection.
5. distributed energy network system according to claim 1, it is characterised in that receive the network scheduling in microgrid
System send control instruction after, the microgrid specifically for：
The voltage magnitude of microgrid side is adjusted, and determines the voltage-phase of the microgrid side and the voltage-phase of another microgrid
Difference；
When the voltage magnitude of the microgrid side is adjusted in default amplitude range, and voltage-phase and the institute of the microgrid side
When stating the difference of the voltage-phase of another microgrid and being defined in default phase range, complete with described another microgrid
Close a floodgate and interconnect.
6. a kind of microgrid, it is characterised in that the microgrid includes：
Transmitting element, for the network scheduling system being sent to the service data of the microgrid in distributed energy network
So as to the network scheduling system, system, determines whether the microgrid meets interconnection condition；
Receiving unit, for receiving the control instruction that the network scheduling system sends；
Interconnection unit, for according to the control instruction for receiving, is closed a floodgate interconnection with another microgrid, to realize with described another is micro-
Power exchange between net；
Wherein, the interconnection unit specifically for：
According to the control instruction for receiving, adjust the voltage magnitude of microgrid side, and determine the voltage-phase of the microgrid side with it is described
The difference of the voltage-phase of another microgrid；
When the voltage magnitude of the microgrid side is adjusted in default amplitude range, and voltage-phase and the institute of the microgrid side
When stating the difference of the voltage-phase of another microgrid and being defined in default phase range, complete with described another microgrid
Close a floodgate and interconnect, with the power exchange realized and between described another microgrid.
7. a kind of network scheduling system, it is characterised in that the network scheduling system includes：
Receiving unit, for receiving the service data that each microgrid sends；
Determining unit, the service data of each microgrid for being received according to the receiving unit, it is determined that in described each microgrid
Two microgrids whether meet interconnection condition；
Transmitting element, if determining that described two microgrids meet interconnection condition for the determining unit, sends out to described two microgrids
Send control instruction to indicate that described two microgrids perform interconnection such that it is able to control the power exchange between described two microgrids；
Wherein, the interconnection condition is specifically, have demand for interconnection and the same frequency conjunction of described two microgrids satisfaction between described two microgrids
Lock is required；
The determining unit specifically for：
Supply and demand complementary case of two microgrids in each microgrid described in analysis judgement within following a period of time, it is described to determine
Whether two microgrids have demand for interconnection；
When it is determined that described two microgrids have demand for interconnection, it is determined that whether meet to close a floodgate with frequency between described two microgrids and want
Ask；
The transmitting element specifically for：
If meet to close a floodgate with frequency between described two microgrids requiring, send control instruction to indicate described two to described two microgrids
Individual microgrid performs interconnection.
8. a kind of forming method of distributed energy network, is applied to microgrid, it is characterised in that include：
The service data of the microgrid is sent to into network scheduling system, the microgrid is determined so as to the network scheduling system
Whether interconnection condition is met；
Receive the control instruction that the network scheduling system sends；
According to the control instruction for receiving, close a floodgate with another microgrid and interconnect, with the energy realized and between described another microgrid
Transaction；
Wherein, it is described according to the control instruction for receiving, specifically include with another microgrid combined floodgate interconnection：
According to the control instruction for receiving, adjust the voltage magnitude of microgrid side, and determine the voltage-phase of the microgrid side with it is described
The difference of the voltage-phase of another microgrid；
When the voltage magnitude of the microgrid side is adjusted in default amplitude range, and voltage-phase and the institute of the microgrid side
When stating the difference of the voltage-phase of another microgrid and being defined in default phase range, complete with described another microgrid
Close a floodgate and interconnect.
9. a kind of forming method of distributed energy network, is applied to network scheduling system, it is characterised in that include：
Receive the service data that each microgrid sends；
According to the service data of each microgrid for receiving, it is determined that whether two microgrids in described each microgrid meet interconnecting strip
Part；
If it is determined that described two microgrids meet interconnection condition, control instruction is sent to described two microgrids described two micro- to indicate
Net performs interconnection such that it is able to control the power exchange between described two microgrids；
Wherein, the interconnection condition is specifically, have demand for interconnection and the same frequency conjunction of described two microgrids satisfaction between described two microgrids
Lock is required；
Whether two microgrids in described each microgrid of determination meet interconnection condition specifically includes：
Supply and demand complementary case of two microgrids in each microgrid described in analysis judgement within following a period of time, it is described to determine
Whether two microgrids have demand for interconnection；
When it is determined that described two microgrids have demand for interconnection, it is determined that whether meet to close a floodgate with frequency between described two microgrids and want
Ask；
If two microgrids in described each microgrid meet interconnection condition, control instruction is sent to indicate to described two microgrids
State two microgrids execution interconnections to be specially：
If meet to close a floodgate with frequency between described two microgrids requiring, send control instruction to indicate described two to described two microgrids
Individual microgrid performs interconnection.
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| CN105116809B (en) * | 2015-09-10 | 2018-03-27 | 国电南京自动化股份有限公司 | The intelligent micro-grid load control system and method that a kind of user can customize |
| CN105226659B (en) * | 2015-10-27 | 2018-01-19 | 国家电网公司 | A kind of multizone supports the micro-grid system of independent operating each other |
| CN106253345B (en) * | 2016-09-12 | 2018-12-18 | 新奥科技发展有限公司 | A kind of electric power networks and its control method, device and system |
| CN106253344B (en) * | 2016-09-12 | 2018-12-18 | 新奥科技发展有限公司 | A kind of electric power networks and its control system and control method, network scheduling device |
| CN106253346B (en) * | 2016-09-12 | 2018-11-30 | 新奥科技发展有限公司 | A kind of control method of electric power networks, apparatus and system |
| CN106253347B (en) * | 2016-09-12 | 2018-10-30 | 新奥科技发展有限公司 | A kind of control method of electric power networks, apparatus and system |
| CN106253348B (en) * | 2016-09-12 | 2019-02-12 | 新奥科技发展有限公司 | A kind of electric power networks and its control method, device and system |
| CN106655267B (en) * | 2016-12-26 | 2019-08-16 | 上海电力学院 | A kind of energy local area network and control method considering more microgrid interactions |
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