CN104682378B - A kind of micro-grid system - Google Patents
A kind of micro-grid system Download PDFInfo
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- CN104682378B CN104682378B CN201310628847.XA CN201310628847A CN104682378B CN 104682378 B CN104682378 B CN 104682378B CN 201310628847 A CN201310628847 A CN 201310628847A CN 104682378 B CN104682378 B CN 104682378B
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Classifications
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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
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
Abstract
A kind of micro-grid system, including multiple unit unit interface devices, the outside connection power network of one unit unit interface device, the outboard power interface and outside communication interface of remaining any one unit unit interface device are connected with same controlled device respectively, are connected between the inner side communication interface of the inner side communication interface of each unit unit interface device and the adjacent cells interface arrangement of the unit unit interface device by communication line；The inboard power interface of each unit unit interface device is connected by transmission line of electricity with the inboard power interface of remaining element interface arrangement；Controlled device includes load and micro- source；The unit unit interface device of outside connection power network enters row information with power network and power is interacted, and the unit unit interface device of outside connection controlled device enters row information with controlled device and power is interacted, and realizes the intelligent control to controlled device；Any one unit unit interface device is communicated with the adjacent cells interface arrangement of the unit unit interface device by communication line.The intelligentized control method of micro-capacitance sensor can be realized.
Description
Technical field
The present invention relates to micro-capacitance sensor technical field, more particularly to a kind of micro-grid system.
Background technology
At present, micro-capacitance sensor because its is environment-friendly, the low factor of construction cost have become the useful supplement of power network.In micro- electricity
In net, it will usually be deployed with substantial amounts of micro- source（Such as new energy power supply and small-sized conventional power source）And load（Such as refrigerator, air-conditioning
Deng）, and found in putting into practice, the characteristic in this source slightly is totally different, and the significance level of these loads and also have very big with electrical characteristics
Difference, it is difficult to realize the intelligentized control method of micro-capacitance sensor.
The content of the invention
The embodiment of the invention discloses a kind of micro-grid system, the intelligentized control method of micro-capacitance sensor can be realized.
First aspect of the embodiment of the present invention discloses a kind of micro-grid system, including：
Multiple unit unit interface devices, wherein, the outboard power interface of unit unit interface device and outside communication connect
Mouth is connected by transmission line of electricity, communication line and power network respectively, and the outside of remaining any one of unit unit interface device
Electricity interface and outside communication interface are connected by transmission line of electricity, communication line with same controlled device respectively, and each
The inner side communication interface of the individual unit unit interface device communicates with the inner side of the adjacent cells interface arrangement of the unit unit interface device
Connected between interface by communication line；The inboard power interface of each unit unit interface device passes through transmission line of electricity and its
The inboard power interface connection of the remaining unit unit interface device；Wherein, the controlled device includes load and micro- source；Wherein, outside
The unit unit interface device of side connection power network is used to enter row information with the power network and power is interacted, and outside connects the list of controlled device
First interface arrangement is used to enter row information with the controlled device and power is interacted, to realize the intelligence control to the controlled device
System；Wherein, the adjacent cells interface arrangement of any one of unit unit interface device and the unit unit interface device passes through order wire
Road is communicated.
In the first possible implementation of first aspect of the embodiment of the present invention, any one of unit interface dress
Protection switch is in series with the transmission line of electricity for the outboard power interface connection put.
With reference to the first possible implementation of first aspect of the embodiment of the present invention, in first aspect of the embodiment of the present invention
Second of possible implementation in, any one of unit unit interface device is built-in with static switch, processor and monitoring
Unit, wherein, a connection end of the static switch is electrically connected with the inboard power interface of the unit unit interface device, described quiet
Another connection end of state switch is electrically connected with the outboard power interface of the unit unit interface device, the control end of the static switch
It is connected with the processor, the processor is connected with the monitoring unit, the monitoring unit monitors the unit unit interface device
Outside connection controlled device and/or the unit unit interface device it is whether abnormal, if the outside connection of the unit unit interface device
Controlled device and/or the unit unit interface device it is abnormal, output control is instructed to the processor, described in the processor response
Control instruction, control the static switch to disconnect that the unit unit interface device is connected with the outside of the unit unit interface device is controlled
Electrical connection between object.
With reference to second of possible implementation of first aspect of the embodiment of the present invention, in first aspect of the embodiment of the present invention
The third possible implementation in, the processor gather the unit unit interface device outside connection controlled device fortune
Row parameter, and the controlled device connected according to the operational factor to the outside of the unit unit interface device carries out intelligent control.
With reference to second of possible implementation of first aspect of the embodiment of the present invention, in first aspect of the embodiment of the present invention
The 4th kind of possible implementation in, the processor is used to detect the outer of the unit unit interface device in the monitoring unit
When the controlled device of side connection has excessive short-circuit power, control the static switch to disconnect the unit unit interface device with being somebody's turn to do
Electrical connection between the controlled device of the outside connection of unit unit interface device.
With reference to second of possible implementation of first aspect of the embodiment of the present invention, in first aspect of the embodiment of the present invention
The 5th kind of possible implementation in, the processor be used for detect the short of the unit unit interface device in the monitoring unit
When being insufficient to allow the protection switch tripping operation during power of road, the static switch is controlled to disconnect the unit unit interface device and the list
Electrical connection between the controlled device of the outside connection of first interface arrangement.
With reference to any one possible implementation in second to the 5th kind of first aspect of the embodiment of the present invention,
In 6th kind of possible implementation of first aspect of the embodiment of the present invention, the processor is adjacent with the unit unit interface device
Unit unit interface device is communicated by communication line.
With reference to the 6th kind of possible implementation of first aspect of the embodiment of the present invention, in first aspect of the embodiment of the present invention
The 7th kind of possible implementation in, the communication line include wire communication line or wireless communication line.
In the 8th kind of possible implementation of first aspect of the embodiment of the present invention, the transmission line of electricity include cable or
Pole-and-tower type power transmission line.
In the 9th kind of possible implementation of first aspect of the embodiment of the present invention, any one of unit interface dress
The inner side communication interface put is at least two.
In the embodiment of the present invention, in multiple unit unit interface devices that the micro-grid system includes, a unit unit interface device
Outboard power interface and outside communication interface respectively pass through transmission line of electricity, communication line connect power network, remaining any one list
The outboard power interface and outside communication interface of first interface arrangement are connected with same controlled device respectively, and each unit connects
Pass through between the inner side communication interface of mouth device and the inner side communication interface of the adjacent cells interface arrangement of the unit unit interface device
Communication line is connected, and the inboard power interface of each unit unit interface device passes through transmission line of electricity and remaining element interface arrangement
Inboard power interface connect so that outside connection controlled device unit unit interface device can enter with the controlled device row information and
Power is interacted, to realize the intelligent control to the controlled device；Further, any one unit unit interface device and the unit
The adjacent cells interface arrangement of interface arrangement is communicated by communication line, it is possible to achieve the coordination of micro-capacitance sensor.
In the embodiment of the present invention, the micro-grid system also has the advantage that：
1）It is compatible strong, the characteristics of type that is more suitable for distributed energy is more, capacity disperses；
2）Implementation is simple, and micro- source and load are networked by the unit unit interface device of standard；
3）Extended mode is flexible, it is only necessary to adding unit interface arrangement and necessary connecting line；
4）Cost is low, has larger cost advantage compared to the scheme realized by senior measure and control device.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below by using required in embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ability
For the those of ordinary skill of domain, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings other attached
Figure.
Fig. 1 is that Fig. 1 is a kind of structural representation of micro-grid system disclosed in the embodiment of the present invention；
Fig. 2 is a kind of interconnection architecture signal of unit unit interface device in micro-grid system disclosed in the embodiment of the present invention
Figure；
Fig. 3 is a kind of structural representation of unit unit interface device in micro-grid system disclosed in the embodiment of the present invention；
Fig. 4 is the structural representation of another unit unit interface device in micro-grid system disclosed in the embodiment of the present invention；
Fig. 5 is the structural representation of another micro-grid system disclosed in the embodiment of the present invention.
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 whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, the scope of protection of the invention is belonged to.
The embodiment of the invention discloses a kind of micro-grid system, the intelligentized control method of micro-capacitance sensor can be realized.Individually below
It is described in detail.
Referring to Fig. 1, Fig. 1 is a kind of structural representation of micro-grid system disclosed in the embodiment of the present invention.Such as Fig. 1 institutes
Show, the micro-grid system can include：
Multiple unit unit interface devices 1,2,3,4,5；
Wherein, the outboard power interface and outside communication interface of unit unit interface device 1 pass through transmission line of electricity a, communication respectively
Circuit 11 is connected with power network.
Wherein, the outboard power interface and outside communication interface of unit unit interface device 2 pass through transmission line of electricity b, communication respectively
Circuit 12 is connected with same controlled device, as shown in figure 1, the controlled device of the outside connection of unit unit interface device 2 can be
Micro- source.
Wherein, the outboard power interface and outside communication interface of unit unit interface device 3 pass through transmission line of electricity c, communication respectively
Circuit 13 is connected with same controlled device, as shown in figure 1, the controlled device of the outside connection of unit unit interface device 3 can also
It is micro- source.
Wherein, the outboard power interface and outside communication interface of unit unit interface device 4 pass through transmission line of electricity d, communication respectively
Circuit 14 is connected with same controlled device, as shown in figure 1, the controlled device of the outside connection of unit unit interface device 4 can be
Load L.
Wherein, the outboard power interface and outside communication interface of unit unit interface device 5 pass through transmission line of electricity e, communication respectively
Circuit 15 is connected with same controlled device, as shown in figure 1, the controlled device of the outside connection of unit unit interface device 5 can also
It is load L.
Wherein, the inner side communication interface of unit unit interface device 1 and the adjacent cells interface arrangement 2 of unit unit interface device 1
Connected between the communication interface of inner side by communication line 17；The inner side communication interface of unit unit interface device 1 and unit unit interface device 1
Adjacent cells interface arrangement 3 inner side communication interface between connected by communication line 18.
Wherein, the inner side communication interface of unit unit interface device 2 and the adjacent cells interface arrangement 1 of unit unit interface device 2
Connected between the communication interface of inner side by communication line 17；The inner side communication interface of unit unit interface device 2 and unit unit interface device 2
Adjacent cells interface arrangement 4 inner side communication interface between connected by communication line 19.
Wherein, the inner side communication interface of unit unit interface device 3 and the adjacent cells interface arrangement 1 of unit unit interface device 3
Connected between the communication interface of inner side by communication line 18；The inner side communication interface of unit unit interface device 3 and unit unit interface device 3
Adjacent cells interface arrangement 5 inner side communication interface between connected by communication line 21.
Wherein, the inner side communication interface of unit unit interface device 4 and the adjacent cells interface arrangement 2 of unit unit interface device 4
Connected between the communication interface of inner side by communication line 19；The inner side communication interface of unit unit interface device 4 and unit unit interface device 4
Adjacent cells interface arrangement 5 inner side communication interface between connected by communication line 20.
Wherein, the inner side communication interface of unit unit interface device 5 and the adjacent cells interface arrangement 3 of unit unit interface device 5
Connected between the communication interface of inner side by communication line 21；The inner side communication interface of unit unit interface device 5 and unit unit interface device 5
Adjacent cells interface arrangement 4 inner side communication interface between connected by communication line 20.
Wherein, any one unit unit interface device（Such as 1）Inboard power interface pass through transmission line of electricity 16 and remaining element
Interface arrangement（Such as 2~5）Inboard power interface connection.
Wherein, unit unit interface device 1 is used to enter row information with power network and power is interacted.For example, unit unit interface device 1 can be with
Information exchange is carried out with power network so that power network is known that the interface power required for unit unit interface device 1, and then power network can be with
Corresponding interface power is inputted for unit unit interface device 1.
Wherein, remaining any one unit unit interface device（Such as 2~5）For entering row information and power friendship with controlled device
Mutually, to realize the intelligent control to controlled device.
Wherein, any one unit unit interface device（Such as 4）With the unit unit interface device（Such as 4）Adjacent cells interface arrangement
（Such as 2 and 5）Communicated by communication line.
In one embodiment, the micro-grid system shown in Fig. 1, the outboard power interface of any one unit unit interface device
Protection switch is in series with the transmission line of electricity of connection.As shown in figure 1, the outboard power interface connection of unit unit interface device 1 is defeated
Protection switch 6 is in series with electric line a；Guarantor is in series with the transmission line of electricity b of the outboard power interface connection of unit unit interface device 2
Shield switch 7；Protection switch 8 is in series with the transmission line of electricity c of the outboard power interface connection of unit unit interface device 3；Unit interface
Protection switch 9 is in series with the transmission line of electricity d of the outboard power interface connection of device 4；The outboard power of unit unit interface device 5 connects
Protection switch 10 is in series with the transmission line of electricity e of mouth connection.
Wherein, protection switch 6,7,8,9,10 can be traditional protection switch, can be according to general setting method pair
Protection switch is configured.
Wherein, communication line 11,12,13,14,15,17,18,19,20,21 include wire communication line or radio communication
Circuit.Wire communication line is including RS232, RS485 etc., and the wireless communication line radio communication line such as including ZigBee, GPRS
Road.
Wherein, transmission line of electricity a, b, c, d, e and 16 can be cable or pole-and-tower type power transmission line.
In the embodiment of the present invention, when the object of the outside connection of unit unit interface device is different, the function of unit unit interface device
Be it is otherwise varied, it is as follows：
1）Connect micro- source；Micro- source operational mode is controlled（Such as PQ patterns, VF patterns）, Power Control（Real power control, nothing
Power control system）, FREQUENCY CONTROL（Raising frequency, frequency reducing）, switch control, and other micro- source parameters configuration etc..Meanwhile, the operation to micro- source
Parameter is acquired, and realizes the observability in micro- source.
2）Connection load；Control load switch（For different time, electricity price, network operating mode）, to compatible load
Carry out parameter configuration（Watt level, power factor etc.）.
3）Connect power network；Collection, the information for receiving and uploading power network and micro-capacitance sensor, realize micro-grid system " off-network pattern "
With the switching of " grid-connect mode ", once system model is changed, the operation characteristic of whole system can produce change, it is necessary to which the unit connects
Information is delivered to other unit interfaces by mouth device, and each micro- source, load in system are reconfigured and adjusted.
Referring to Fig. 2, interconnections of the Fig. 2 for the unit unit interface device in a kind of micro-grid system disclosed in the embodiment of the present invention
Structural representation.As shown in Fig. 2 in the interconnection architecture of the unit unit interface device：
The inner side communication interface of any one unit unit interface device and the adjacent cells interface arrangement of the unit unit interface device
Inner side communication interface between connected by communication line, the inboard power interface of any one unit unit interface device passes through transmission of electricity
Circuit is connected with the inboard power interface of remaining element interface arrangement；Wherein, the outside connection power network of a unit unit interface device,
The outboard power interface and outside communication interface of remaining any one unit unit interface device are connected with same controlled device respectively,
The unit unit interface device of outside connection power network enters row information with power network and power is interacted, and outside connects the unit interface of controlled device
Device enters row information with controlled device and power is interacted, and realizes the intelligent control to controlled device；Any one unit interface is filled
Put and communicated with the adjacent cells interface arrangement of the unit unit interface device by communication line.
Wherein, micro-grid system is may be constructed using the interconnection of the unit unit interface device shown in Fig. 2, when any one unit
During the outside connection power network of interface arrangement, the fusion of micro-grid system and electric power networks can also be realized.
Wherein, communication line can be wire communication line or wireless communication line, and wire communication line can be used
RS232, RS485 etc., wireless communication line can be using Zigbee, GPRS etc..Can under the special scenes for being related to network security
With special setting communication protocol.
Wherein, using in the interconnection architecture of the unit unit interface device shown in Fig. 2 using handle by the way of form looped network, physics
Connection can be by the way of wired or wireless；Unit unit interface device is controlled or using MS master-slave by way of equity
Mode is controlled, in the case of single transmission line malfunction or communication line failure, can still ensure that the whole network information is visible.
Referring to Fig. 3, structures of the Fig. 3 for a kind of unit unit interface device in micro-grid system disclosed in the embodiment of the present invention
Schematic diagram.As shown in figure 3, in the unit unit interface device 25：
The inner side communication interface 22,23 of unit unit interface device 25 can distinguish Attachment Unit Interface device by communication line
The inner side communication interface of the 25 adjacent cells interface arrangement of left and right two, the outside communication interface 24 of unit unit interface device 25 can be with
Any one in power network, micro- source or load is connected by communication line, the inboard power interface 26 of unit unit interface device 25 can
To be connected by transmission line of electricity with the inboard power interface of remaining element interface arrangement, the outboard power of unit unit interface device 25 connects
Mouth 27 can be connected by transmission line of electricity with any one in power network, micro- source or load.Wherein, when outside unit unit interface device 25
When side connects power network, unit unit interface device 25 enters row information with power network（Such as electric parameter, operational factor）With power interaction；Work as list
When the outside of the first interface arrangement 25 micro- source of connection or load, unit unit interface device 25 and micro- source or load into row information（As electrically joined
Number, operational factor）With power interaction, realize to micro- source or the intelligent control of load.Wherein, unit unit interface device 25 can pass through
Inner side communication interface 22,23 and the adjacent cells interface arrangement of left and right two of unit unit interface device 25 are led to by communication line
Letter.
Referring to Fig. 4, knots of the Fig. 4 for another unit unit interface device in micro-grid system disclosed in the embodiment of the present invention
Structure schematic diagram.Wherein, compared with the unit unit interface device 25 shown in Fig. 3, the unit unit interface device 25 shown in Fig. 4 is built-in with：
Static switch 28, processor 29 and monitoring unit 30, wherein, a connection end of static switch 28 and unit interface
The inboard power interface 26 of device 25 is electrically connected, another connection end of static switch 28 and the outside electricity of unit unit interface device 25
Power interface 27 is electrically connected, and the control end of static switch 28 is connected with processor 29, and processor 29 is connected with monitoring unit 30, monitoring
Whether the controlled device and/or the unit unit interface device of the outside connection of the monitoring unit interface arrangement 25 of unit 30 are abnormal, if
The controlled device and/or the unit unit interface device of the outside connection of unit unit interface device 25 are abnormal, and output control is instructed to processing
Device 29, processor 29 responds the control instruction, and control static switch 28 is with switching units interface arrangement 25 and unit unit interface device
Electrical connection between the controlled device of 25 outside connection.
Wherein, the operational factor for the controlled device that processor 29 can be connected with the outside of collecting unit interface arrangement 25, and
Intelligent control is carried out according to the controlled device that operational factor is connected to the outside of the unit unit interface device.
Wherein, processor 29 can detect the controlled device of the outside connection of unit unit interface device 25 in monitoring unit 30
During with excessive short-circuit power, control static switch 28 is with the outside of switching units interface arrangement 25 and the unit unit interface device
Electrical connection between the controlled device of connection.
Wherein, processor 29 can be insufficient to allow when monitoring unit 30 detects the short-circuit power of unit unit interface device 25
When protection switch trips, control static switch 28 is connected with switching units interface arrangement 25 with the outside of the unit unit interface device 25
Controlled device between electrical connection.
Wherein, when the power transmission line between the outboard power interface 27 and controlled device of the unit unit interface device 25 shown in Fig. 4
When being in series with protection switch on road, the unit unit interface device 25 shown in Fig. 4 can realize static switch 28 and the string of protection switch
Connection so that obtained good combination the characteristics of static switch " speed is fast " and protection switch " highly reliable ".
In the embodiment of the present invention, static switch 28 is built in unit unit interface device 25, can be according to the life of processor 29
The electrical connection between micro- source, load, power network is cut-off in order.
In the embodiment of the present invention, when the unit unit interface device 25 shown in Fig. 4 outboard power interface 27 and controlled device it
Between transmission line of electricity on when being in series with protection switch, protection switch can realize the functions such as traditional overcurrent protection, can also carry out
Control protection switch is cut-off manually.
When micro-capacitance sensor and power network are under grid-connect mode, such as monitoring unit 30 monitors that exception occurs in power network so that
Power network has very big short-circuit power, and now protection switch can carry out overcurrent protection.
When micro-capacitance sensor and power network are under off-network pattern, such as monitoring unit 30 monitors that exception occurs in micro-capacitance sensor, makes
The capacity of short circuit for obtaining micro-capacitance sensor is insufficient to allow protection switch to trip, and now static switch can be with unit interface module and controlled device
Between electrical connection.
, can be by unit unit interface device to electrically ginseng for complex unbalanced fault etc. in the embodiment of the present invention
Several analyses judges to be positioned, and sending order makes static switch cut out failure.
In the embodiment of the present invention, multiple unit unit interface devices can realize micro- source, load etc. in microgrid by information processing
Topology reconstruction, energy and information will reconfigure, and meet diversified power demands.
Referring to Fig. 5, Fig. 5 is the structural representation of another micro-grid system disclosed in the embodiment of the present invention.In Fig. 5 institutes
In the micro-grid system shown, it is possible to use the interconnection architecture of unit unit interface device as shown in Figure 2 to realize power network, it is Wei Yuan, negative
The interconnection of load, wherein, micro- source, which includes two-way inverter, combining inverter, load L, includes refrigerator, washing machine, air-conditioning and photograph
It is bright.In the micro-grid system shown in Fig. 5, annexation and unit interface between unit unit interface device and controlled device
Annexation between device has been described in preceding embodiment, is not repeated herein.In the micro-capacitance sensor shown in Fig. 5
In system, unit unit interface device can with micro- source, load into row information and power interaction, realize to micro- source, load control,
Row information and power interaction can be entered with power network.It is specific as follows：
1st, the control of load:
1）Refrigerator, unit unit interface device can enter row information and power interaction with refrigerator, control refrigerator 24 hours uninterruptedly
Operation；
2）Washing machine, unit unit interface device can enter row information and power interaction with washing machine, and control washing machine is in the consumption
Electric slack hours section operation, to reduce electricity charge consumption；
3）Air-conditioning, unit unit interface device can enter row information and power interaction with air-conditioning, and control air-conditioning is in operational factor（Such as
Power, startup time, running temperature, wind speed, operation duration）Lower operation；
4）Illumination, first interface arrangement can be interacted with illuminating into row information and power, be controlled in operational factor（Such as power,
Startup time, brightness of illumination etc.）Lower operation.
2nd, the control in micro- source：
1）Two-way inverter, unit unit interface device can enter row information and power interaction with two-way inverter, when two-way inverse
Become device under grid-connect mode, when operating in PQ patterns, control two-way inverter discharge and recharge etc.；When two-way inverter is in simultaneously off-network mould
Under formula, when operating in VF patterns, two-way contravarianter voltage and frequency etc. are controlled.
2）Combining inverter, unit unit interface device can enter row information and power interaction, parallel network reverse with combining inverter
Device continuous service controls combining inverter operational factor in PQ patterns.
3rd, the interaction of power network：
Unit unit interface device can gather the nodal information of power network in real time, and exchange the information of power network and micro-capacitance sensor, simultaneously
Anticipation is carried out, is timely responded to when power network or abnormal micro-capacitance sensor appearance, for example, adjacent unit can be notified by communication line
Interface arrangement.
In the embodiment of the present invention, in multiple unit unit interface devices that the micro-grid system includes, a unit unit interface device
Outboard power interface and outside communication interface respectively pass through transmission line of electricity, communication line connect power network, remaining any one list
The outboard power interface and outside communication interface of first interface arrangement are connected with same controlled device respectively, and each unit connects
Pass through between the inner side communication interface of mouth device and the inner side communication interface of the adjacent cells interface arrangement of the unit unit interface device
Communication line is connected, and the inboard power interface of each unit unit interface device passes through transmission line of electricity and remaining element interface arrangement
Inboard power interface is connected so that the unit unit interface device of outside connection controlled device can enter row information with the controlled device
（For example, controlled device can be configured its operational parameter value informing unit interface arrangement by unit unit interface device for controlled device
The operational parameter value needed）With power interaction（For example, the power informing unit interface dress that controlled device can be needed
Put, be that controlled device configures the power needed by unit unit interface device）, to realize the intelligence control to the controlled device
System；Further, the adjacent cells interface arrangement of any one unit unit interface device and the unit unit interface device passes through order wire
Road is communicated, it is possible to achieve the coordination of micro-capacitance sensor.
In the embodiment of the present invention, the micro-grid system also has the advantage that：
1）It is compatible strong, the characteristics of type that is more suitable for distributed energy is more, capacity disperses；
2）Implementation is simple, and micro- source and load are networked by the unit unit interface device of standard；
3）Extended mode is flexible, it is only necessary to adding unit interface arrangement and necessary connecting line；
4）Cost is low, has larger cost advantage compared to the scheme realized by senior measure and control device.
In the embodiment of the present invention, pass through static switch and protection switch series connection, communication line and transmission of electricity in micro-grid system
The mode of lines in parallel, it is possible to achieve the fusion of information flow and energy stream.
In the embodiment of the present invention, as a kind of new micro-grid system framework of micro-grid system, pass through new mode pair
The energy and information are merged, and the interaction of this information and the energy, amalgamation mode can be with other small size power supplying systems
Promote.
Equally, by the function integrity of each controlled device and integrated, new development path can be brought with micro-grid system,
Using it is simpler, cost is less expensive, product is more professional, user is more friendly.
Micro-grid system disclosed in the embodiment of the present invention is described in detail above, specific example used herein
Principle and embodiment to the present invention are set forth, and the explanation of above example is only intended to help and understands the present invention；Together
When, for those of ordinary skill in the art, according to the thought of the present invention, have in specific embodiments and applications
Change part, in summary, this specification content should not be construed as limiting the invention.
Claims (8)
1. a kind of micro-grid system, it is characterised in that including：
Multiple unit unit interface devices, wherein, the outboard power interface and outside communication interface point of unit unit interface device
Do not connected by transmission line of electricity, communication line and power network, the outboard power interface of remaining any one of unit unit interface device
It is connected respectively by transmission line of electricity, communication line with each self-corresponding same controlled device with outside communication interface, and often
The inner side communication interface of one unit unit interface device and the inner side of the adjacent cells interface arrangement of the unit unit interface device lead to
Connected between letter interface by communication line, to form looped network by the way of handle；Each unit unit interface device
Inboard power interface is connected by transmission line of electricity with the inboard power interface of unit unit interface device remaining described；Wherein, the quilt
Controlling object includes load and micro- source；Wherein, outside connection power network unit unit interface device be used for the power network enter row information and
Power is interacted, and the unit unit interface device of outside connection controlled device is used to enter row information with the controlled device and power is interacted,
To realize the intelligent control to the controlled device；Wherein, any one of unit unit interface device and the unit unit interface device
Adjacent cells interface arrangement communicated by communication line；
Protection switch is in series with the transmission line of electricity of the outboard power interface connection of any one of unit unit interface device；
Any one of unit unit interface device is built-in with static switch, processor and monitoring unit, wherein, the static switch
A connection end electrically connected with the inboard power interface of the unit unit interface device, another connection end of the static switch with
The outboard power interface electrical connection of the unit unit interface device, the control end of the static switch is connected with the processor, described
Processor is connected with the monitoring unit, and the monitoring unit monitors the controlled device of the outside connection of the unit unit interface device
And/or whether the unit unit interface device is abnormal, if the controlled device and/or the unit of the outside connection of the unit unit interface device
Interface arrangement is abnormal, and output control is instructed to the processor, control instruction described in the processor response, controls the static state
Switch to disconnect the electrical connection between the controlled device that the outside of the unit unit interface device and the unit unit interface device is connected.
2. micro-grid system according to claim 1, it is characterised in that the processor gathers the unit unit interface device
The operational factor of the controlled device of outside connection, and the quilt connected according to the operational factor to the outside of the unit unit interface device
Control object and carry out intelligent control.
3. micro-grid system according to claim 1, it is characterised in that the processor is used in the monitoring unit
The controlled device of outside connection of the unit unit interface device is detected when there is excessive short-circuit power, the static switch is controlled
To disconnect the electrical connection between the controlled device that the outside of the unit unit interface device and the unit unit interface device is connected.
4. micro-grid system according to claim 1, it is characterised in that the processor is used in monitoring unit inspection
When the short-circuit power for measuring the unit unit interface device is insufficient to allow the protection switch tripping operation, the static switch is controlled to disconnect
Electrical connection between the controlled device of the outside connection of the unit unit interface device and the unit unit interface device.
5. the micro-grid system according to Claims 1 to 4 any one, it is characterised in that the processor and the unit
The adjacent cells interface arrangement of interface arrangement is communicated by communication line.
6. micro-grid system according to claim 5, it is characterised in that the communication line include wire communication line or
Wireless communication line.
7. micro-grid system according to claim 1, it is characterised in that the transmission line of electricity includes cable or pole-and-tower type is defeated
Electric wire.
8. micro-grid system according to claim 1, it is characterised in that the inner side of any one of unit unit interface device
Communication interface is at least two.
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| CN201310628847.XA CN104682378B (en) | 2013-11-29 | 2013-11-29 | A kind of micro-grid system |
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| EP3387726B1 (en) * | 2015-12-11 | 2022-06-29 | Hitachi Energy Switzerland AG | Microgrid segmentation |
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