CN202997587U - Intelligent micro-network distributed power supply - Google Patents
Intelligent micro-network distributed power supply Download PDFInfo
- Publication number
- CN202997587U CN202997587U CN2012206237892U CN201220623789U CN202997587U CN 202997587 U CN202997587 U CN 202997587U CN 2012206237892 U CN2012206237892 U CN 2012206237892U CN 201220623789 U CN201220623789 U CN 201220623789U CN 202997587 U CN202997587 U CN 202997587U
- Authority
- CN
- China
- Prior art keywords
- solar
- inverter
- grid
- distributed power
- controller
- 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.)
- Expired - Fee Related
Links
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000007600 charging Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 16
- 230000015556 catabolic process Effects 0.000 description 8
- 238000004146 energy storage Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005315 distribution function Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Classifications
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/14—District level solutions, i.e. local energy networks
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model relates to an intelligent micro-network distributed power supply. The technical solution of the intelligent micro-network distributed power supply is characterized in that: a solar cell assembly is respectively connected with a solar grid-connected inverter and a DC-DC conversion module after series-parallel connection; a solar photovoltaic assembly is connected with a solar controller through the DC-DC conversion module; the solar controller is respectively connected with an accumulator set, the DC-DC conversion module and a solar off-grid inverter, thereby performing charging/discharging on the accumulator set. The solar off-grid inverter is connected with the solar controller, the solar grid-connected inverter and the electrical network for inverting DC current to AC current to for supplying to a load. The intelligent micro-network distributed power supply is advantageous in that: when electric current exists in the electrical network, a solar power generating system can be connected with the electrical network for generating power; and when no electric current exists in the electrical network, the electric energy in the accumulator is used for supplying electric power for a load. Continuous electric power consumption requirement of the user can be satisfied through the intelligent micro-network distributed power supply.
Description
Technical field
The utility model relates to a kind of solar photovoltaic generation system, particularly a kind of intelligent microgrid distributed power source.
Background technology
The intelligence microgrid refers to collect by distributed power source, energy storage device, energy conversion device, relevant load and monitoring, protective device the small-sized electric system of being transported to that forms; it is an autonomous system that can realize that the oneself controls, protects and manage; both can be incorporated into the power networks with external electrical network, also can isolated operation.From microcosmic, microgrid can be regarded small-sized electric power system as, it possesses the complete power transmission and distribution function of sending out, and can realize local power-balance with energy-optimised, and it is to have simultaneously with essential distinction with the distributed generation system of loading and is incorporated into the power networks and stand-alone capability.From macroscopic view, microgrid can be thought again power supply or the load of " virtual " in power distribution network.
The solar energy off-grid system is the solar power system that breaks away from electrical network that utilizes that storage battery carries out energy storage, and shortcoming is to be mainly the impact that is subjected to the life of storage battery in the life-span, and the battery service expense is higher.
Solar grid-connected system is that the direct current that sun the subject of knowledge and the object of knowledge sends is directly incorporated the solar power system of local electrical network into through the inverter inversion.Local electrical network in fact can be regarded as a huge energy-storage system, the electric power that solar power system is sent is transported to other loads uses of supply in electrical network, and in the needs electricity consumption, obtaining electric energy from electrical network, electrical network just plays the effect of storage battery.But when electrical breakdown, inverter can't move, and solar power system lost efficacy, and can't satisfy the needs of load.
Therefore, when using the solar energy off-grid system, when storage battery was under-voltage, the user can't electricity consumption as the user; When using solar power system, after electrical breakdown, the user also can't electricity consumption as the user.
Summary of the invention
The purpose of this utility model is exactly in view of the foregoing defects the prior art has, and a kind of intelligent microgrid distributed power source is provided, so that the user is when electrical network has electricity, solar power system can generate electricity by way of merging two or more grid systems; When electrical breakdown, utilize the electricity of storage battery the inside to continue as load electric power is provided.
Its technical scheme is: comprise that solar module, DC-DC modular converter, batteries, controller for solar, solar energy are from net inverter, solar grid-connected inverter, electrical network, described solar module accesses respectively solar grid-connected inverter and DC-DC modular converter through after connection in series-parallel, by the DC-DC modular converter, solar photovoltaic assembly is connected with controller for solar; Described controller for solar is connected from the net inverter with batteries, DC-DC module and solar energy, is used for batteries is discharged and recharged; Described solar energy is connected with controller for solar, solar grid-connected inverter and electrical network from the net inverter, is that the alternating current supply load uses with dc inverter.
Above-mentioned batteries adopts the lithium iron phosphate storage battery of long service life.
Above-mentioned solar energy has the civil power input module from the net inverter.
Above-mentioned solar grid-connected inverter is connected with solar photovoltaic assembly, is to be that the alternating current supply load uses with dc inverter.
Above-mentioned solar grid-connected inverter is single-phase inverter or three-phase inverter.
The beneficial effects of the utility model are: electrical network has in electric situation by day, and a solar energy electricity power part is charge in batteries through controller for solar, is that storage battery is in full state, and another part generates electricity through the solar grid-connected inverter direct grid-connected; By day in the electrical breakdown situation, a solar energy electricity power part changes alternating current through solar energy into from the net inverter provides load electric, a unnecessary part is charge in batteries through controller for solar, and when solar power generation was not enough, storage battery replenished not enough electric power.In the situation that night, electrical network had electricity, grid power is used in load; During electrical breakdown, load electric has storage battery through supplying with from the net inverter at night.Can satisfy user's continuous need for electricity by this power supply.
Description of drawings
Accompanying drawing 1 is the structural representation of the first embodiment of the present utility model;
In upper figure: solar module 1, DC-DC modular converter 2, batteries 3, controller for solar 4, solar energy are from net inverter 5, solar grid-connected inverter 6, electrical network 7.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments, the embodiment of the present invention is described in further detail.
The utility model provides a kind of intelligent microgrid distributed power source, as scheme as shown in l, solar module 1, DC-DC modular converter 2, batteries 3, controller for solar 4, solar energy are from net inverter 5, solar grid-connected inverter 6, electrical network 7, solar module 1 accesses respectively solar grid-connected inverter 6 and DC-DC modular converter 2 through after connection in series-parallel, DC-DC modular converter 2 is to be connected with controller for solar 4 with solar photovoltaic assembly 1, is mainly make the string lower voltage of solar photovoltaic assembly or bring up to as satisfying the requirement of batteries 3 chargings.
Controller for solar 4 is connected from net inverter 5 with batteries 3, DC-DC module 2 and solar energy, is mainly that batteries 3 is discharged and recharged.Controller for solar 4 basic functions possess over-charge protective, Cross prevention and anti-reverse etc., especially also will have plenty of and have the counterflow-preventing function.Batteries 3 is connected with controller for solar 4, is mainly when electrical breakdown, for solar power system provides electric power.
Wherein, batteries 3 is selected the lithium iron phosphate storage battery of long service life; Solar energy is connected with controller for solar 4, solar grid-connected inverter 6 and electrical network 7 from net inverter 5, is to be that the alternating current supply load uses with dc inverter.Solar energy has the civil power input module from net inverter 5, can select civil power preferentially to power, off-grid system is preferentially powered, only use off-grid system etc.Solar grid-connected inverter 6 is connected with solar photovoltaic assembly 1, is to be that the alternating current supply load uses with dc inverter.Solar grid-connected inverter 6 is that single-phase inverter also can be three-phase inverter.
Intelligent microgrid distributed power source of the present invention, electrical network has in electric situation by day, and a solar energy electricity power part is charge in batteries through controller for solar, is that storage battery is in full state, and another part generates electricity through the solar grid-connected inverter direct grid-connected; By day in the electrical breakdown situation, a solar energy electricity power part changes alternating current through solar energy into from the net inverter provides load electric, a unnecessary part is charge in batteries through controller for solar, and when solar power generation was not enough, storage battery replenished not enough electric power.In the situation that night, electrical network had electricity, grid power is used in load; During electrical breakdown, load electric has storage battery through supplying with from the net inverter at night.Can satisfy user's continuous need for electricity by this power supply.
The above is only preferred embodiment of the present invention, is not for limiting protection scope of the present invention.All any modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., all be included in protection scope of the present invention.
Claims (5)
1. intelligent microgrid distributed power source, it is characterized in that: comprise that solar module (1), DC-DC modular converter (2), batteries (3), controller for solar (4), solar energy are from net inverter (5), solar grid-connected inverter (6), electrical network (7), described solar module (1) accesses respectively solar grid-connected inverter (6) and DC-DC modular converter (2) through after connection in series-parallel, by DC-DC modular converter (2), solar photovoltaic assembly (1) is connected 4 with controller for solar) connect; Described controller for solar (4) is connected from net inverter (5) with batteries (3), DC-DC module (2) and solar energy, is used for batteries (3) is discharged and recharged; Described solar energy is connected with controller for solar (4), solar grid-connected inverter (6) and electrical network (7) from net inverter (5), is that the alternating current supply load uses with dc inverter.
2. intelligent microgrid distributed power source according to claim 1, is characterized in that: the lithium iron phosphate storage battery of described batteries (3) employing long service life.
3. intelligent microgrid distributed power source according to claim 1, it is characterized in that: described solar energy has the civil power input module from net inverter (5).
4. intelligent microgrid distributed power source according to claim 1, it is characterized in that: described solar grid-connected inverter (6) is connected with solar photovoltaic assembly (1), is to be that the alternating current supply load uses with dc inverter.
5. according to claim 1 or 4 described intelligent microgrid distributed power sources, it is characterized in that: described solar grid-connected inverter (6) is single-phase inverter or three-phase inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206237892U CN202997587U (en) | 2012-11-23 | 2012-11-23 | Intelligent micro-network distributed power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206237892U CN202997587U (en) | 2012-11-23 | 2012-11-23 | Intelligent micro-network distributed power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202997587U true CN202997587U (en) | 2013-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206237892U Expired - Fee Related CN202997587U (en) | 2012-11-23 | 2012-11-23 | Intelligent micro-network distributed power supply |
Country Status (1)
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| CN (1) | CN202997587U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015035727A1 (en) * | 2013-09-10 | 2015-03-19 | 南车株洲电力机车研究所有限公司 | Driving system for multi-energy power supply motor |
| CN104882908A (en) * | 2015-05-25 | 2015-09-02 | 镇江市高等专科学校 | Intelligent micro-grid special inverter and control method thereof |
| CN105262194A (en) * | 2015-11-03 | 2016-01-20 | 江苏万丰光伏有限公司 | Distributed photovoltaic intelligent power supply terminal system |
-
2012
- 2012-11-23 CN CN2012206237892U patent/CN202997587U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015035727A1 (en) * | 2013-09-10 | 2015-03-19 | 南车株洲电力机车研究所有限公司 | Driving system for multi-energy power supply motor |
| CN104882908A (en) * | 2015-05-25 | 2015-09-02 | 镇江市高等专科学校 | Intelligent micro-grid special inverter and control method thereof |
| CN104882908B (en) * | 2015-05-25 | 2018-01-30 | 镇江市高等专科学校 | Intelligent micro-grid special inverter and control method |
| CN105262194A (en) * | 2015-11-03 | 2016-01-20 | 江苏万丰光伏有限公司 | Distributed photovoltaic intelligent power supply terminal system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20151123 |