CN106712264A - Distributed power supply system - Google Patents
Distributed power supply system Download PDFInfo
- Publication number
- CN106712264A CN106712264A CN201611092695.6A CN201611092695A CN106712264A CN 106712264 A CN106712264 A CN 106712264A CN 201611092695 A CN201611092695 A CN 201611092695A CN 106712264 A CN106712264 A CN 106712264A
- Authority
- CN
- China
- Prior art keywords
- trt
- load
- control terminal
- storage device
- wire net
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
-
- 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
- H02J15/00—Systems for storing electric energy
-
- 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
-
- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/02—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which an auxiliary distribution system and its associated lamps are brought into service
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/10—Applications of fuel cells in buildings
-
- 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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
The invention provides a distributed power supply system comprising a power generation device; and a control terminal which is connected with the power generation device, a common power grid and a load and used for controlling the power generation device and/or the common power grid to feed to the load according to the electric quantity situation of the power generation device, wherein the control terminal controls the power generation device and the common power grid to feed to the load together when the power generation capacity of the power generation device is insufficient, and the control terminal controls the common power grid to feed to the load when the power generation device has no output of electric quantity. Therefore, different feed modes for the load can be adopted according to different situations of the power generation device and the power grid so as to guarantee normal feeding to the load.
Description
Technical field
The present invention relates to technical field of power systems, and in particular to a kind of distributed power supply system.
Background technology
Energy crisis and climatic deterioration cause to include photovoltaic generation, wind-power electricity generation and other recyclability green power supplies (
Having a rest property power supply) developed rapidly in the exploitation of interior distributed power source.Photovoltaic generation, wind-power electricity generation distributed power supply is pollution-free and
Aboundresources, is the photovoltaic for being best able to meet human demand, growing need for electricity can be met, with very big exploitation
Value, with very big Development volue.
Usual distributed power source is connected with public electric wire net, is that the load being connected on public electric wire net is carried out by public electric wire net
Power supply, however, in public electric wire net failure or not enough distributed power source generating capacity, the feed to loading cannot be ensured, causes
Make load cisco unity malfunction.
Therefore, how to ensure that normal feed is carried out to load turns into problem demanding prompt solution in distributed power supply system.
The content of the invention
The technical problem to be solved in the present invention is how to ensure normally to present load in distributed power supply system
Electricity.
A kind of distributed power supply system is the embodiment of the invention provides for this, including：
TRT；Control terminal, is connected, for according to TRT with TRT, public electric wire net and load respectively
Battery condition control TRT and/or public electric wire net to load feed；When TRT generated energy is not enough, control
Terminal control TRT and public electric wire net feed to load jointly；When TRT does not have electricity to export, control is eventually
End control public electric wire net feeds to load.
Alternatively, electric storage device, is connected with control terminal, is negative after the break signal sent for response control terminal
It is loaded into going feed, break signal is the signal that TRT and public electric wire net are disconnected with load.
Alternatively, control terminal is additionally operable to monitor the state-of-charge of electric storage device；Control terminal is monitoring state-of-charge
After reaching charged higher limit, control TRT and public electric wire net are disconnected with load, so that electric storage device is to load supplying.
Alternatively, electric storage device is additionally operable to the electric energy produced by the storing up electricity signal storage and power generation apparatus of response control terminal.
Alternatively, control terminal is being monitored after state-of-charge reaches charged lower limit, and control TRT is filled to storing up electricity
Put charging；Control terminal is being monitored after state-of-charge reaches charged higher limit, and control TRT stops filling to electric storage device
Electricity.
Alternatively, control terminal is additionally operable to control TRT to feed public electric wire net.
Alternatively, control terminal includes：Controller, for controlling TRT, public electric wire net, load and electric storage device to appoint
The flow direction of the electric energy of meaning item；Modular converter, the direct current for TRT to be produced is converted into load, public electric wire net or storing up electricity
The available electric energy of device.
Alternatively, modular converter includes：Inverter, is connected, for produce TRT with load and public electric wire net
Converting direct-current power into alternating-current power, feeds with to load and/or public electric wire net；Direct current transducer, is connected with electric storage device, for inciting somebody to action
The direct current that TRT is produced is converted into can be used for the direct current of electric storage device storage, so that electric storage device storage electric energy.
Alternatively, TRT includes：Wind power generation plant, device of solar generating, hydroelectric generation and fuel cell
In any one or any combination.
The distributed power supply system that the present invention is provided, when TRT generated energy is sufficient, controls to send out by control terminal
Electric installation feeds to load, and when TRT generated energy is not enough, control TRT and public electric wire net are common to load
Fed, when TRT does not have electricity to export, control public electric wire net feeds to load.Such that it is able to realize being directed to
The TRT situation different with power network is taken to loading different feeding classifications, and then, can ensure is carried out normally to load
Feed.
As preferred technical scheme, electric storage device is set in distributed power supply system, in TRT and common electrical
After net and load are disconnected, after controller sends break signal to electric storage device, under the triggering of break signal for load into
Row feed.It is thus possible to ensure normally to feed load.
Brief description of the drawings
In order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art, below will be to specific
The accompanying drawing to be used needed for implementation method or description of the prior art is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 shows the schematic diagram of the distributed power supply system of the embodiment of the present invention 1.
Specific embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Present embodiment discloses a kind of distributed power supply system, as shown in figure 1, including：
TRT 10, TRT 10 can be 10kW TRTs in the present embodiment, can be according to using technology
Difference, can be divided into thermoelectric cold cogeneration generating, internal combustion unit generation, gas turbine power generation, miniature hydro-power generation, wind-power electricity generation,
Solar energy power generating, fuel cell etc.；According to the energy source type for being used, DG can be divided into for example, coal, oil, natural gas
Generated electricity and such as two kinds of forms of the renewable energy power generation such as wind-force, solar energy, tide, biomass, small power station etc. fossil energy.
Control terminal 20, is connected, for the electricity according to TRT 10 with TRT 10, public electric wire net and load respectively
Amount control TRT 10 and/or public electric wire net feed to load；When the generated energy of TRT 10 is not enough, control terminal
20 control TRTs and public electric wire net feed to load jointly；When TRT does not have electricity to export, control terminal
Control public electric wire net feeds to load.In the particular embodiment, TRT 10, can be independent when generated energy is sufficient
In public electric wire net, individually load is individually fed, TRT 10 is inadequate in generated energy, such as TRT 10 is for too
It is positive can TRT, when overcast and rainy, control terminal 20 can control public electric wire net and TRT 10 is common that load is carried out
Feed；TRT 10 is exported in no electricity, and such as TRT failure, or TRT is device of solar generating,
At at night, control terminal 20 can control public electric wire net individually to be fed to load.
The distributed power supply system that the present invention is provided, when TRT generated energy is sufficient, controls to send out by control terminal
Electric installation feeds to load, and when TRT generated energy is not enough, control TRT and public electric wire net are common to load
Fed, when TRT does not have electricity to export, control public electric wire net feeds to load.Such that it is able to realize being directed to
The TRT situation different with power network is taken to loading different feeding classifications, and then, can ensure is carried out normally to load
Feed.
In an alternate embodiment of the invention, distributed power supply system can also include：Electric storage device 30, connects with control terminal 20
Connect, for the break signal that response control terminal 20 sends, for load is fed.In this embodiment, break signal is generating
The signal that device 10 and public electric wire net are disconnected with load.In the particular embodiment, when public electric wire net failure, TRT
When 10 generated energy are not enough or exported without electricity, the control of control terminal 20 load is disconnected with load with public electric wire net and TRT 10
Open, electric storage device 30 is fed for load under the triggering of break signal.
In an alternate embodiment of the invention, control terminal 20 is additionally operable to monitor the state-of-charge of electric storage device 30, control terminal 20
After charged filling reaches charged higher limit, control TRT 10 and public electric wire net are disconnected with load, so that storing up electricity is filled
30 pairs of loads are put to feed.In the particular embodiment, the state-of-charge of the monitor in real time electric storage device of control terminal 20, in prison
Control electric storage device 30 state-of-charge reach higher limit after, electric storage device 30 is state to be fed, and control terminal 20 can select
Select and control electric storage device to be fed for load, TRT 10 and public electric wire net are disconnected with load.
In optional implementing, electric storage device 30 is additionally operable to the storing up electricity signal of response control terminal 20, and storage generates electricity and fills
Put the electric energy produced by 10.Control terminal 20 controls TRT 10 pairs after the state-of-charge charged lower limit of arrival is monitored
Electric storage device 30 charges；Control terminal is being monitored after state-of-charge reaches charged higher limit, and control TRT 10 is to storing up electricity
Device 30 stops charging.
Electric storage device is set in distributed power supply system, after TRT and public electric wire net are disconnected with load,
After controller sends break signal to electric storage device, for load is fed under the triggering of break signal.It is thus possible to ensure
Load is normally fed.
In an alternate embodiment of the invention, control terminal 20 is additionally operable to control TRT 10 to feed public electric wire net.
In specific embodiment, the generated energy of TRT 10 is sufficient, while meeting to load feed, can also be by unnecessary electricity
Amount is uploaded to public electric wire net, and public electric wire net is fed, and has both slowed down the power supply pressure of public electric wire net, can be created for user again
Economic benefit.
In an alternate embodiment of the invention, as shown in figure 1, control terminal 20 includes：
Controller 21, the electric energy for controlling TRT 10, public electric wire net, load and the Arbitrary Term of the electric storage device 30
Flow direction.In the particular embodiment, controller 21 can control 10 pairs of load feeds of TRT, and TRT 10 is to public
Power network feeds, and TRT 10 charges to electric storage device 30；Controller 21 can also control public electric wire net to feed load；
Controller 21 can also control 30 pairs of loads of electric storage device to feed.
Modular converter 22, for the direct current that TRT 10 is produced to be converted into load, public electric wire net or electric storage device
30 available electric energy.In the present embodiment, TRT 10 is that can produce galvanic TRT, it is impossible to for load
Directly powered with public electric wire net, its DC current flow voltage for producing may float larger, it is impossible to be directly used in electric storage device
30 charge.Need for the direct current that TRT 10 is produced to be converted into load, public electric wire net or electric storage device 30 directly to make
Electric energy, to meet the feed to load, public electric wire net or electric storage device 30.
In an alternate embodiment of the invention, as indicated with 1, modular converter 22 can include：
Inverter 221, is connected, for the direct current for producing the TRT 10 with the load and the public electric wire net
Electricity is converted into alternating current, is fed with to the load and/or the public electric wire net.In the present embodiment, inverter 221 can be
DC-AC (direct current-alternating current) converter.
Direct current transducer 222, is connected with the electric storage device 30, and the direct current for the TRT 10 to be produced turns
The direct current that can be used for the storage of the electric storage device 30 is changed into, so that the storage electric energy of electric storage device 30.In the present embodiment, direct current
Converter 222 can be DC-DC (direct current-direct current) converter.
The distributed power supply system that the present invention is provided, when TRT generated energy is sufficient, controls to send out by control terminal
Electric installation feeds to load, and when TRT generated energy is not enough, control TRT and public electric wire net are common to load
Fed, when TRT does not have electricity to export, control public electric wire net feeds to load.Storing up electricity dress is provided with simultaneously
Put, when TRT and public electric wire net can not power, electric storage device can feed to load, such that it is able to realize pin
The situation different with power network to TRT is taken to loading different feeding classifications, and then, can ensure is carried out just to load
Often feed.
Although being described in conjunction with the accompanying embodiments of the present invention, those skilled in the art can not depart from this hair
Various modification can be adapted in the case of bright spirit and scope and modification, and such modification and modification are each fallen within by appended claims
Within limited range.
Claims (9)
1. a kind of distributed power supply system, it is characterised in that including：
TRT (10)；
Control terminal (20), is connected with the TRT (10), public electric wire net and load respectively, for according to the dress that generates electricity
The battery condition for putting (10) controls the TRT (10) and/or the public electric wire net to feed the load；
When TRT generated energy is not enough, control terminal (20) the control TRT and public electric wire net it is common to load into
Row feed；
When TRT does not have electricity to export, control terminal (20) the control public electric wire net feeds to load.
2. distributed power supply system as claimed in claim 1, it is characterised in that also include：
Electric storage device (30), is connected with the control terminal (20), the open circuit letter for responding the control terminal (20) transmission
It is that the load is fed after number, the break signal is the TRT (10) and the public electric wire net negative with described
The signal that load is disconnected.
3. distributed power supply system as claimed in claim 2, it is characterised in that
The control terminal (20) is additionally operable to monitor the state-of-charge of the electric storage device (30)；
The control terminal (20) is being monitored after the state-of-charge reaches charged higher limit, controls the TRT (10)
Disconnected with the load with the public electric wire net, so that the electric storage device (30) is to the load supplying.
4. distributed power supply system as claimed in claim 2, it is characterised in that
The electric storage device (30) is additionally operable to respond TRT (10) described in the storage electric signal storage of the control terminal (20)
Produced electric energy.
5. distributed power supply system as claimed in claim 4, it is characterised in that
The control terminal (20) is being monitored after the state-of-charge reaches charged lower limit, controls the TRT (10)
The electric storage device (30) is charged；
The control terminal (20) is being monitored after the state-of-charge reaches charged higher limit, controls the TRT (10)
The electric storage device (30) is stopped to charge.
6. the distributed power supply system as described in claim 1-5 any one, it is characterised in that
The control terminal (20) is additionally operable to control the TRT (10) to feed the public electric wire net.
7. the distributed power supply system as described in claim 2-5 any one, it is characterised in that control terminal (20) bag
Include：
Controller (21), for controlling the TRT (10), public electric wire net, load and the electric storage device (30) Arbitrary Term
Electric energy flow direction；
Modular converter (22), for the direct current that the TRT (10) is produced to be converted into the load, the common electrical
Net or the electric storage device (20) available electric energy.
8. distributed power supply system as claimed in claim 7, it is characterised in that the modular converter (22) includes：
Inverter (221), is connected, for the direct current for producing the TRT (10) with the load and the public electric wire net
Electricity is converted into alternating current, is fed with to the load and/or the public electric wire net；
Direct current transducer (222), is connected with the electric storage device (30), for the direct current for producing the TRT (10)
It is converted into can be used for the direct current of the electric storage device (30) storage, so that electric storage device (30) storage electric energy.
9. the distributed power supply system as described in claim 1-5, it is characterised in that the TRT (30) includes：
Any one in wind power generation plant, device of solar generating, hydroelectric generation and fuel cell or any combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611092695.6A CN106712264A (en) | 2016-12-01 | 2016-12-01 | Distributed power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611092695.6A CN106712264A (en) | 2016-12-01 | 2016-12-01 | Distributed power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106712264A true CN106712264A (en) | 2017-05-24 |
Family
ID=58935549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611092695.6A Pending CN106712264A (en) | 2016-12-01 | 2016-12-01 | Distributed power supply system |
Country Status (1)
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| CN (1) | CN106712264A (en) |
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Address after: Shinan District 266003 Shandong city of Qingdao province Liujiaxia Road No. 17 Applicant after: Qingdao Power Supply Company, State Grid Shandong Electric Power Company Applicant after: State Grid Co., Ltd. Address before: Shinan District 266003 Shandong city of Qingdao province Liujiaxia Road No. 17 Applicant before: Qingdao Power Supply Company, State Grid Shandong Electric Power Company Applicant before: State Grid Corporation |