CN106169774B - A kind of off-network type micro-grid system - Google Patents
A kind of off-network type micro-grid system Download PDFInfo
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- CN106169774B CN106169774B CN201610757121.XA CN201610757121A CN106169774B CN 106169774 B CN106169774 B CN 106169774B CN 201610757121 A CN201610757121 A CN 201610757121A CN 106169774 B CN106169774 B CN 106169774B
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- 238000012544 monitoring process Methods 0.000 claims abstract description 49
- 230000005611 electricity Effects 0.000 claims abstract description 30
- 238000010248 power generation Methods 0.000 claims description 43
- 238000004146 energy storage Methods 0.000 claims description 29
- 239000000446 fuel Substances 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000002401 inhibitory effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000003653 coastal water Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- H02J13/0096—
-
- 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
- H02J3/01—Arrangements for reducing harmonics or ripples
-
- 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
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
-
- 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
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/388—Islanding, i.e. disconnection of local power supply from the network
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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
- Y02E40/30—Reactive power compensation
-
- 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
- Y02E40/40—Arrangements for reducing harmonics
-
- 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
The invention discloses a kind of off-network type micro-grid system, including busbar, the distributed power unit being connected with busbar, busbar support unit, power quality amending unit, electric energy is dispatched and monitoring unit and user load；Electric energy is dispatched with monitoring unit for being monitored in real time to distributed power unit, busbar support unit, power quality amending unit and user load, to realize electric energy scheduling and distribution；Distributed power unit is for generating electricity；Power quality amending unit is used to inhibit the electric energy power factor of harmonic wave and maintenance busbar on busbar；Busbar support unit is used for the voltage fluctuation of balance bus.The off-network type micro-grid system is independently-powered, and independent of the support of bulk power system, so as to provide stable, reliable, environmentally protective electric energy supply from the region of bulk power system farther out for overseas isolated island, remote districts etc..
Description
Technical field
The present invention relates to micro-capacitance sensor technical field, espespecially a kind of off-network type micro-grid system.
Background technology
With the development of economy, coastal waters, off-lying sea isolated island and remote districts etc. far from bulk power grid area have become tourism,
The industries such as military affairs, transport by sea, fishery chase hot spot.Recent decades, science and technology is growing, and engineers and technicians are solution
Certainly powerup issue is made that unremitting effort.But power grid power supply is implemented to the remote districts in coastal waters, off-lying sea and separate bulk power grid, most
Big difficulty is that transmission of electricity Corridor Building cost, power transmission and distribution cost are significantly larger than electric cost.
In recent years, micro-capacitance sensor technology became small range, the new technology of zonule high efficiency power becomes research hotspot, but so far
The many micro-grid systems proposed are all based on the grid type micro-grid system of bulk power grid support, this kind of system is for the big electricity of distance
It the close region of net systematic comparison being capable of efficiently independent power supply.But for overseas isolated island, the equidistant bulk power grid system in remote districts
The region power transmission and distribution cost for uniting distant is significantly larger than electric cost.
Therefore it provides one kind can be independently-powered and be people in the art independent of bulk power grid support micro-grid system
The technical issues of member's urgent need to resolve.
Invention content
In view of this, a kind of offer off-network type micro-grid system of the embodiment of the present invention, independent of bulk power system
Support can be independently-powered, can be overseas isolated island, remote districts etc. from the region of bulk power system farther out provide stabilization, can
It leans on, the supply of environmentally protective electric energy.
A kind of off-network type micro-grid system provided in an embodiment of the present invention, including：Busbar, the distributed electrical being connected with busbar
Source unit, busbar support unit, power quality amending unit, electric energy scheduling and monitoring unit and user load；Wherein,
Electric energy scheduling and monitoring unit are for the distributed power unit, the busbar support unit, described
Power quality amending unit and the user load are monitored in real time, and according to the power generation work(of the distributed power unit
Rate, the electric power of the user load and electrical parameter on the busbar are to the distributed power unit, the mother
Line support unit, the power quality amending unit are controlled to realize electric energy scheduling and distribution；
The distributed power unit is used under the control that the electric energy is dispatched with monitoring unit generate electricity；
The power quality amending unit is used to inhibit the busbar under the control in electric energy scheduling with monitoring unit
On harmonic wave and maintain the electric energy power factor of the busbar；
The busbar support unit is used under the control in electric energy scheduling with monitoring unit balance the electricity of the busbar
Pressure fluctuation.
Preferably, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, the busbar support unit packet
It includes：Battery energy storage module and flywheel energy storage module；
The electric energy scheduling is specifically used for monitoring unit：When the electric power of the user load of detection and described point
When the difference of the generated output of cloth power supply is greater than or equal to first threshold range, controls the battery energy storage module and charge
Or electric discharge；When the difference is less than the first threshold range and is more than second threshold range, the flywheel energy storage mould is controlled
Block carries out charge or discharge；The wherein described first threshold range is more than the second threshold range.
Preferably, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, the busbar support unit is also
Including：Support and control module；Wherein, the support and control module is used for：
Electric power when the user load that electric energy scheduling is monitored with monitoring unit and the distributed electrical
When the difference of the generated output in source is more than third threshold range, controls the distributed generation resource and increase generated output and/or control
The user load reduces electric power, or the control distributed generation resource reduces generated output；Wherein, the third threshold value
Range is more than the first threshold range.
Preferably, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, the support and control module tool
Body is used for, the electric power when the user load that electric energy scheduling is monitored with monitoring unit and the distributed generation resource
Generated output difference be more than the third threshold range when：
When the electric power of the user load is more than the generated output of the distributed generation resource, the distribution is determined
Whether the generating capacity of power supply reaches maximum；If so, controlling the user load reduces electric power；If it is not, then controlling institute
It states distributed generation resource and increases generated output；
When the electric power of the user load is less than the generated output of the distributed generation resource, the distribution is controlled
Power supply reduces generated output.
Preferably, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, the distributed power unit
Including：Clean energy resource power generating source and fuel engine power generation power supply；
The electric energy scheduling is specifically used for monitoring unit：Described in electric power priority acccess control according to the user load
Clean energy resource power generating source generates electricity, if the generated output of the clean energy resource power generating source cannot meet the user load
Electric power, then control the fuel engine power generation power supply and the clean energy resource power generating source while generating electricity.
Preferably, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, the clean energy resource power generation electricity
Source includes：One of photovoltaic generation power supply, photo-thermal power generation power supply and wind-power electricity generation power supply or arbitrary combination.
Preferably, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, photo-thermal power generation power supply includes：Slot
One of formula photo-thermal power generation power supply, tower photo-thermal power generation power supply, Fresnel photo-thermal power generation power supply and butterfly photo-thermal power generation power supply
Or arbitrary combination.
Preferably, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, the clean energy resource power generation electricity
Source includes at least butterfly photo-thermal power generation power supply.
Preferably, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, the power quality is corrected single
Member includes Active Power Filter-APF and stillness wattless occurrence apparatus；
The electric energy scheduling is specifically used for monitoring unit：When monitoring the electric energy on the busbar, there are controlled when harmonic wave
The Active Power Filter-APF is opened；When monitoring that the voltage on the busbar is described static there are being controlled when phase difference with electric current
Reactive generating device is opened.
The present invention has the beneficial effect that：
Above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, including busbar, the distributed electrical being connected with busbar
Source unit, busbar support unit, power quality amending unit, electric energy scheduling and monitoring unit and user load；Electric energy dispatch with
Monitoring unit is used to carry out distributed power unit, busbar support unit, power quality amending unit and user load real
When monitor, with realize electric energy scheduling and distribution；Distributed power unit is for generating electricity；Power quality amending unit is for inhibiting female
The electric energy power factor of harmonic wave and maintenance busbar on line；Busbar support unit is used for the voltage fluctuation of balance bus.It should be from
Net type micro-grid system is independently-powered, and independent of the support of bulk power system, so as to be overseas isolated island, remote districts
It is supplied Deng stable, reliable, environmentally protective electric energy is provided from the region of bulk power system farther out.
Description of the drawings
Fig. 1 is one of the structural schematic diagram of off-network type micro-grid system provided in an embodiment of the present invention；
Fig. 2 is the second structural representation of off-network type micro-grid system provided in an embodiment of the present invention；
Fig. 3 is the third structural representation of off-network type micro-grid system provided in an embodiment of the present invention.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
It is described in detail to one step, it is clear that described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.
Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts all
Other embodiments shall fall within the protection scope of the present invention.
A kind of off-network type micro-grid system provided in an embodiment of the present invention, as shown in Figure 1, including：Busbar 1, with 1 phase of busbar
Distributed power unit 2 even, busbar support unit 3, power quality amending unit 4, electric energy scheduling and monitoring unit 5 and user
Load 6；Wherein,
Electric energy is dispatched to be used to correct list to distributed power unit 2, busbar support unit 3, power quality with monitoring unit 5
Member 4 and user load 6 are monitored in real time, and according to the electricity consumption of the generated output of distributed power unit 2, user load 6
Electrical parameter on power and busbar 2 carries out cloth power supply unit 2, busbar support unit 3, power quality amending unit 4
Control is to realize electric energy scheduling and distribution；
Distributed power unit 2 is used under the control that electric energy is dispatched with monitoring unit 5 generate electricity；
Power quality amending unit 4 be used for electric energy scheduling with inhibit under the control of monitoring unit 5 harmonic wave on busbar 1 with
And maintain the electric energy power factor of busbar 1；
Busbar support unit 3 is used for the voltage fluctuation of balance bus 1 under the control in electric energy scheduling with monitoring unit 5.
Above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, including busbar, the distributed electrical being connected with busbar
Source unit, busbar support unit, power quality amending unit, electric energy scheduling and monitoring unit and user load；Electric energy dispatch with
Monitoring unit is used to carry out distributed power unit, busbar support unit, power quality amending unit and user load real
When monitor, with realize electric energy scheduling and distribution；Distributed power unit is for generating electricity；Power quality amending unit is for inhibiting female
The electric energy power factor of harmonic wave and maintenance busbar on line；Busbar support unit is used for the voltage fluctuation of balance bus.It should be from
Net type micro-grid system is independently-powered, and independent of the support of bulk power system, so as to be overseas isolated island, remote districts
It is supplied Deng stable, reliable, environmentally protective electric energy is provided from the region of bulk power system farther out.
It should be noted that electric energy scheduling and monitoring unit are to distributed power unit, busbar support unit, power quality
Amending unit and user load are monitored in real time, refer to being monitored to the state and operational data of these equipment.
Preferably, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, as shown in Fig. 2, busbar supports
Unit 3 includes：Battery energy storage module 31 and flywheel energy storage module 32；
Electric energy scheduling is specifically used for monitoring unit 5：When the electric power and distributed generation resource 2 of the user load 6 of detection
The difference of generated output when being greater than or equal to first threshold range, control battery energy storage module 31 carries out charge or discharge；When
When difference is less than first threshold range and is more than second threshold range, control flywheel energy storage module 32 carries out charge or discharge；Its
Middle first threshold range is more than second threshold range.
In the specific implementation, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, when user load
The difference of the generated output of electric power and distributed generation resource is more than first threshold range, and the electric power of user load is more than
When the generated output of distributed generation resource (on busbar when electric energy anticlimax), electric energy scheduling controls battery energy storage module with monitoring unit
It discharges；When the electric power and distributed generation resource of user load generated output difference be more than first threshold range, and
When the electric power of user load is less than the generated output of distributed generation resource (when electric energy is uprushed on busbar), electric energy scheduling and prison
Control unit control battery energy storage module charges, to the voltage fluctuation on balance bus.
In the specific implementation, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, when user load
When the difference of the generated output of electric power and distributed generation resource is less than first threshold range and is more than second threshold range, and use
When the electric power of family load is more than the generated output of distributed generation resource (on busbar when electric energy anticlimax), electric energy scheduling and monitoring
Unit control flywheel energy storage module is discharged；When the difference of the generated output of the electric power and distributed generation resource of user load
When less than first threshold range and more than second threshold range, and the electric power of user load is less than the power generation of distributed generation resource
When power (when electric energy is uprushed on busbar), electric energy scheduling is charged with monitoring unit control flywheel energy storage module, to protect
Hold the balance of voltage on busbar.
In the specific implementation, battery energy storage module mainly carries out charge or discharge, flywheel energy storage mould by way of capacitance
Block by the conversion regime between electric energy and mechanical energy mainly by carrying out charge or discharge.And battery energy storage module adjusts voltage wave
Dynamic ability is generally higher than flywheel energy storage module, therefore battery energy storage module balancing busbar is used when busbar voltage fluctuation is larger
Voltage fluctuation, when the voltage fluctuation of busbar is relatively small, using the voltage fluctuation of flywheel energy storage module balancing busbar.
Further, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, as shown in figure 3, battery stores up
Energy module 31 includes mainly at least one battery pack 01 and at least one energy accumulation current converter 02, and flywheel energy storage module 32 includes mainly
At least one flywheel 03, motor control assembly 04 corresponding with flywheel 03 and at least one energy accumulation current converter 02.
In the specific implementation, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, energy accumulation current converter is
Converter plant is supplied to battery energy storage module (flywheel energy storage module) for the exchange Denso of busbar to be changed to direct current, will be electric
The direct current of pond energy-storage module (flywheel energy storage module) is converted to alternating current and is supplied to busbar.
Further, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, in order to avoid due to user
The electric power of load occurs to vary widely suddenly or the generated output of distributed generation resource occurs large change and causes micro- electricity suddenly
Net collapse, as shown in Fig. 2, busbar support unit 3 further includes：Support and control module 33；Wherein, support and control module 33 is used for：
When the power generation work(of the electric power and distributed generation resource 2 of the user load 6 that electric energy scheduling is monitored with monitoring unit 5
When the difference of rate is more than third threshold range, control distributed generation resource 2 increases generated output and/or control user load reduction is used
Electrical power, or control distributed generation resource reduce generated output；Wherein, third threshold range is more than first threshold range.
Preferably, in the specific implementation, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, support control
The permission that molding block controls distributed generation resource and user load is dispatched with monitoring unit higher than electric energy to distributed generation resource
The permission controlled with user load thereby may be ensured that when the voltage of busbar happens suddenly larger fluctuation, restore micro- electricity in time
The stability of net system.
Preferably, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, support and control module is specifically used
In when the difference of the generated output of the electric power and distributed generation resource for the user load that electric energy scheduling is monitored with monitoring unit
When more than third threshold range：
When the electric power of user load is more than the generated output of distributed generation resource, the power generation energy of distributed generation resource is determined
Whether power reaches maximum；If so, control user load reduces electric power；If it is not, then controlling distributed generation resource increase power generation
Power；
When the electric power of user load is less than the generated output of distributed generation resource, control distributed generation resource reduces power generation work(
Rate.
Further, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, as shown in Fig. 2, distributed
Power supply unit 2 includes：Clean energy resource power generating source 21 and fuel engine power generation power supply 22；
Electric energy scheduling is specifically used for monitoring unit 5：It is sent out according to the electric power priority acccess control clean energy resource of user load 6
Power supply 21 generates electricity, if the generated output of clean energy resource power generating source 21 cannot meet the electric power of user load 6,
Control fuel engine power generation power supply 22 and clean energy resource power generating source 21 generate electricity simultaneously.
In the specific implementation, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, fuel engine power generation power supply
It is present in micro-grid system as stand-by power supply, when environmental condition limitation generation of electricity by new energy power supply generated energy is drastically reduced even
When shutdown, or in the case where user load increases high power load temporarily for ensure user load electricity consumption it is unrestricted and
The stabilization of micro-grid system needs startup fuel engine power generation power supply to provide electric energy support for micro-grid system.
In the specific implementation, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, as shown in figure 3, combustion
Machine power generating source 22 generally comprises gas electricity generator 13 and converter plant 14.
Further, in the specific implementation, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, such as scheme
Shown in 2, clean energy resource power generating source 21 may include：Photovoltaic generation power supply 211, photo-thermal power generation power supply 212 and wind-power electricity generation electricity
One of source 213 or arbitrary combination, are not limited thereto.
In the specific implementation, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, as shown in figure 3, light
Lying prostrate power generating source 211 includes：Photovoltaic battery array 10, intelligent junction box 11 and photovoltaic DC-to-AC converter 12.Wherein photovoltaic battery array
10, which absorb sunlight, generates DC voltage, and photovoltaic DC-to-AC converter 12 is inputted after intelligent junction box converges 11 streams；Photovoltaic DC-to-AC converter 12
Direct current is converted into alternating current.
In the specific implementation, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, photo-thermal power generation power supply
May include：Slot type photo-thermal power generation power supply, tower photo-thermal power generation power supply, Fresnel photo-thermal power generation power supply and butterfly photo-thermal power generation
One of power supply or arbitrary combination, are not limited thereto.
In the specific implementation, the floor space of butterfly photo-thermal power generation power supply compares the floor space of other photo-thermal power generation power supplys
The application scenario for wanting small, and being mainly used in middle low power, dissolving nearby.It is thus preferable to provided in an embodiment of the present invention
In above-mentioned off-network type micro-grid system, the clean energy resource power generating source includes at least butterfly photo-thermal power generation power supply.
In the specific implementation, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, as shown in figure 3, light
Hot power generating source 212 is butterfly photo-thermal power generation power supply, and butterfly photo-thermal power generation power supply includes：Butterfly light gathering reflector lens array 05, sun
Optical receiver 06 and stirling generator 07.Wherein, butterfly light gathering reflector lens array 05 is used to photo-thermal converging to sunlight and receive
Device 06, sunlight receiver 06 drive stirling generator 07 to generate electricity at high temperature.
In the specific implementation, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, as shown in figure 3, wind
Power power generating source 213 includes：Wind turbine 08, motor power generator 09 and wind-force current transformer 00.Wherein, wind turbine 08 is acted in wind-force
Lower rotation drives the motor high speed rotation in motor power generator 09, motor coaxial linkage electrical power generators, through wind-force
Current transformer 00 is connected to the grid after carrying out frequency modulation, voltage stabilizing, harmonics restraint, electric energy processing.
In the specific implementation, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, distributed electrical is controlled
Source decreases or increases generated output and can be realized by disconnecting or increasing the generating equipment opened in distributed generation resource.Control user
Load reduces electric power and can be realized by breaking part user load.
In the specific implementation, in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention, as shown in Fig. 2, electric
Energy quality amending unit 4 includes Active Power Filter-APF 41 and stillness wattless occurrence apparatus 42；
Electric energy scheduling is specifically used for monitoring unit 5：When monitoring the electric energy on busbar 1, there are harmonic wave time control active electricals
Force filter 41 is opened；When monitoring the voltage on busbar 1, there are stillness wattless occurrence apparatus 42 is controlled when phase difference with electric current
It opens.
In the specific implementation, electric energy power factor needs to tie up in above-mentioned off-network type micro-grid system provided in an embodiment of the present invention
It holds 0.9 or more, and some components in micro-grid system can reduce electric energy power factor, so as to cause the voltage on busbar
There are phase differences with electric current, it is therefore desirable to open stillness wattless occurrence apparatus compensate so that electric energy power factor restore to
0.9 or more.
In the specific implementation, in above-mentioned micro-grid system provided in an embodiment of the present invention, in order to realize power generation power supply
It matches, the whole stored energy capacitance and distributed generation resource of battery energy storage module and flywheel energy storage module in busbar support unit
Generating capacity be designed according to the user load of the micro-grid system region, and micro-grid system be additionally provided with it is superfluous
Remaining expansion interface, in case the capacity of the extension distributed generation resource in the case where user load increases significantly.
A kind of off-network type micro-grid system provided in an embodiment of the present invention, including busbar, the distributed electrical being connected with busbar
Source unit, busbar support unit, power quality amending unit, electric energy scheduling and monitoring unit and user load；Electric energy dispatch with
Monitoring unit is used to carry out distributed power unit, busbar support unit, power quality amending unit and user load real
When monitor, with realize electric energy scheduling and distribution；Distributed power unit is for generating electricity；Power quality amending unit is for inhibiting female
The electric energy power factor of harmonic wave and maintenance busbar on line；Busbar support unit is used for the voltage fluctuation of balance bus.It should be from
Net type micro-grid system is independently-powered, and independent of the support of bulk power system, so as to be overseas isolated island, remote districts
It is supplied Deng stable, reliable, environmentally protective electric energy is provided from the region of bulk power system farther out.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (9)
1. a kind of off-network type micro-grid system, which is characterized in that including：Busbar, the distributed power unit being connected with busbar, mother
Line support unit, power quality amending unit, electric energy scheduling and monitoring unit and user load；Wherein,
The electric energy scheduling is used for monitoring unit to the distributed power unit, the busbar support unit, the electric energy
Quality amending unit and the user load are monitored in real time, and according to the generated output of the distributed power unit,
Electrical parameter on the electric power of the user load and the busbar is to the distributed power unit, the busbar
Support unit, the power quality amending unit are controlled to realize electric energy scheduling and distribution；
The distributed power unit is used under the control that the electric energy is dispatched with monitoring unit generate electricity；
The power quality amending unit is used to inhibit on the busbar under the control in electric energy scheduling with monitoring unit
Harmonic wave and the electric energy power factor for maintaining the busbar；
The busbar support unit is used under the control in electric energy scheduling with monitoring unit balance the voltage wave of the busbar
It is dynamic.
2. off-network type micro-grid system as described in claim 1, which is characterized in that the busbar support unit includes：Battery
Energy-storage module and flywheel energy storage module；
The electric energy scheduling is specifically used for monitoring unit：Electric power when the user load of detection and the distribution
When the difference of the generated output of power supply is greater than or equal to first threshold range, controls the battery energy storage module and charged or put
Electricity；When the difference be less than the first threshold range and more than second threshold range when, control the flywheel energy storage module into
Row charge or discharge；The wherein described first threshold range is more than the second threshold range.
3. off-network type micro-grid system as claimed in claim 2, which is characterized in that the busbar support unit further includes：Branch
Support control module；Wherein, the support and control module is used for：
Electric power when the user load that electric energy scheduling is monitored with monitoring unit and the distributed generation resource
When the difference of generated output is more than third threshold range, controls the distributed generation resource and increase described in generated output and/or control
User load reduces electric power, or the control distributed generation resource reduces generated output；Wherein, the third threshold range
More than the first threshold range.
4. off-network type micro-grid system as claimed in claim 3, which is characterized in that the support and control module is specifically used for,
When the power generation of the electric power and the distributed generation resource of the user load that electric energy scheduling is monitored with monitoring unit
When the difference of power is more than the third threshold range：
When the electric power of the user load is more than the generated output of the distributed generation resource, the distributed generation resource is determined
Generating capacity whether reach maximum；If so, controlling the user load reduces electric power；Divide if it is not, then control is described
Cloth power supply increases generated output；
When the electric power of the user load is less than the generated output of the distributed generation resource, the distributed generation resource is controlled
Reduce generated output.
5. off-network type micro-grid system according to any one of claims 1-4, which is characterized in that the distributed power unit
Including：Clean energy resource power generating source and fuel engine power generation power supply；
The electric energy scheduling is specifically used for monitoring unit：It is cleaned described in electric power priority acccess control according to the user load
Energy power generating source generates electricity, if the generated output of the clean energy resource power generating source cannot meet the use of the user load
Electrical power then controls the fuel engine power generation power supply and the clean energy resource power generating source while generating electricity.
6. off-network type micro-grid system as claimed in claim 5, which is characterized in that the clean energy resource power generating source includes：
One of photovoltaic generation power supply, photo-thermal power generation power supply and wind-power electricity generation power supply or arbitrary combination.
7. off-network type micro-grid system as claimed in claim 6, which is characterized in that the photo-thermal power generation power supply includes：Slot type
One of photo-thermal power generation power supply, tower photo-thermal power generation power supply, Fresnel photo-thermal power generation power supply and butterfly photo-thermal power generation power supply or
Arbitrary combination.
8. off-network type micro-grid system as claimed in claim 5, which is characterized in that the clean energy resource power generating source at least wraps
Include butterfly photo-thermal power generation power supply.
9. off-network type micro-grid system according to any one of claims 1-4, which is characterized in that the power quality is corrected single
Member includes Active Power Filter-APF and stillness wattless occurrence apparatus；
The electric energy scheduling is specifically used for monitoring unit：When monitoring the electric energy on the busbar, there are described in control when harmonic wave
Active Power Filter-APF is opened；When monitoring the voltage on the busbar, there are the static reacance is controlled when phase difference with electric current
Generating means is opened.
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