CN107359636A - A kind of charging system - Google Patents
A kind of charging system Download PDFInfo
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- CN107359636A CN107359636A CN201710605948.3A CN201710605948A CN107359636A CN 107359636 A CN107359636 A CN 107359636A CN 201710605948 A CN201710605948 A CN 201710605948A CN 107359636 A CN107359636 A CN 107359636A
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- transformer
- charging system
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- 238000004146 energy storage Methods 0.000 claims abstract description 45
- 230000005611 electricity Effects 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000009466 transformation Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 description 6
- 238000005286 illumination Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004064 recycling Methods 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
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H02J3/383—
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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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of charging system, including：Photovoltaic generating module, for converting solar energy into electric energy；Plant-grid connection module, for accessing the electric energy of external power source offer；Energy-storage module, it is connected with photovoltaic generating module and plant-grid connection module, for storing the electric energy of photovoltaic generating module and the offer of plant-grid connection module；Control module, the electric energy output for the electric energy output regulation power supply AM access module according to photovoltaic generating module.Charging system provided by the invention can be according to weather parameters and conversion efficiency and power demand and energy storage situation, effectively coordinate the electric energy output of photovoltaic generating module and the electric energy output of external power source access, electric energy can also be provided to external power source when electric energy abundance has residue when photovoltaic generation provides.
Description
Technical field
The present invention relates to technical field of electric power, and in particular to a kind of charging system.
Background technology
The output of existing photovoltaic generation, which the mode such as connects by special line or T in the case where meeting certain standard and accesses power network, to be participated in
Power supply, system of the energy-accumulating power station as independent operating is internal often to configure a large amount of energy-storage batteries, in charging station, by photovoltaic generation
The electric energy of caused electric energy or incoming transport power network, store and provide electric energy when power network end needs.
In practical application, with day, the moon, year intensity of illumination distribution influence, photovoltaic generation is presented with intensity of illumination
Uncertainty, the uncertainty of photovoltaic generation cause its utilization rate to lack effectively to manage, cause because photovoltaic generation with exchange
Power network power supply effectively cooperative scheduling, some even conduct electricity more than needed can not be wasted.
The content of the invention
Therefore, the technical problem to be solved in the present invention is to overcome photovoltaic generation and accumulation power supply of the prior art can not
The defects of coordinating to cause photovoltaic generation can not be made to be utilized to greatest extent very well, so as to provide a kind of charging system, it is intended to can
Photovoltaic generation energy is enough made full use of, and can meets energy-accumulating power station normal operation demand simultaneously, maximizes energy utilization.
The invention provides a kind of charging system, including：
Photovoltaic generating module, for converting solar energy into electric energy；
Plant-grid connection module, for accessing the electric energy of external power source offer；
Energy-storage module, it is connected with the photovoltaic generating module and plant-grid connection module, for storing the photovoltaic generation mould
The electric energy that block and the plant-grid connection module provide；
Control module, for adjusting the electricity of the plant-grid connection module according to the electric energy output of the photovoltaic generating module
Can output quantity.
Preferably, described charging system, in addition to：
Electric energy output module, it is connected with the energy-storage module, for exporting the energy-storage module storage to external device (ED)
Electric energy；
The control module is additionally operable to control the energy-storage module to the electric energy according to the reserve of electricity of the energy-storage module
The electric energy of output module output storage.
Further, the electric energy output module includes current transformer and transformer；
Current transformer, the direct current for the energy-storage module to be exported are converted to alternating current；
Transformer, for connecting outside power transmission network.
Further, the plant-grid connection module includes transformer and current transformer, and the transformer connects outside power transmission network,
The current transformer is connected with the transformer and the energy-storage module；The control module is according to the electricity of the photovoltaic generating module
Energy output quantity sends dispatch command to the transformer, so that the transformer is instructed to external electrical network inputing power according to described
Carry out corresponding dispatch deal.Further, the current transformer is used to the alternating current that the transformer exports being converted to direct current.
Further, the control module is used to determine that the photovoltaic generating module exists according to weather parameters and conversion efficiency
First electric energy output valve of the first scheduled time slot, and determine the plant-grid connection module according at least to the first electric energy output valve
The second electric energy output valve of required offer in the second scheduled time slot.
Further, the control module is used for the current storage according to the first electric energy output valve and the energy-storage module
Electricity determines the second electric energy output valve of the plant-grid connection module required offer in the second scheduled time slot.
Further, the photovoltaic generating module includes：
At least one photovoltaic cell, for converting solar energy into electric energy；
Confluence module, for converging to the electric energy that photovoltaic cell changes into.
Technical solution of the present invention, have the following advantages that：
Charging system provided in an embodiment of the present invention, can according to weather condition, Demand-side electrical energy demands and energy storage situation,
Effectively coordinate the electric energy output of photovoltaic generating module and the electric energy output of AC power access, when photovoltaic generation provides electricity
Can abundance have and can also provide electric energy for external power source during residue so that photovoltaic generation can be utilized sufficiently, while energy storage is electric
Using fortune battery is moved back, assets rationally recycle, economical and practical in pond.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, 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 is the composition frame diagram of charging system in the embodiment of the present invention.
Fig. 2 is a specific example flow chart of charging system in the embodiment of the present invention.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is part of the embodiment of the present 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.
In the description of the invention, it is necessary to which explanation, term " first ", " second " are only used for describing purpose, and can not
It is interpreted as indicating or implying relative importance.
In the description of the invention, it is necessary to which explanation, unless otherwise clearly defined and limited, term " connected ", " connects
Connect " it should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or it is integrally connected；It can be machine
Tool connects or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can also be two
The connection of element internal, can be wireless connection or wired connection.For the ordinary skill in the art,
The concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other
It is be combined with each other into conflict can.
The present embodiment provides a kind of charging system, and the system can be applied in the storage for having photovoltaic generation and AC network power supply
Energy power station, as shown in figure 1, including：
Photovoltaic generating module 10, for converting solar energy into electric energy.Photovoltaic generating module can for example include at least one
Individual photovoltaic cell and confluence module, it is respectively used to convert solar energy into electric energy and the electric energy that photovoltaic cell changes into is converged
Close.
In the present embodiment, factor of the photovoltaic cell from the aspect of installation and maintenance, including：(1) only angled ask is assumed
Topic, without considering four seasons sunlight strength difference；(2) the problem of laying dust is more improper than inclination angle more serious is considered, laying dust can cause greatly
In 50% matrix power generation loss, cell panel need to be taken to clean measure, increase inclination angle, be advantageous to the clear of surface of photovoltaic cell panel
It is clean；(3) consider local latitude, simulated by software, consider engineering construction conveniently selects inclination angle.According to geographical position feelings
Condition, photovoltaic cell quantity can be installed by calculating maximum, calculated by photovoltaic cell terminal voltage etc. and combined header box model sum
Amount, lightning-proof header box input is accessed by parallel way after first connecting.
Plant-grid connection module 20, for accessing the electric energy of external power source offer.Plant-grid connection module includes transformer and change
Device, the outside power transmission network of transformer connection are flowed, current transformer is connected with transformer and energy-storage module；Control module is according to photovoltaic generation mould
The electric energy output of block sends dispatch command to transformer, so that transformer is adjusted according to instruction to external electrical network inputing power
Degree processing.Current transformer is used to the alternating current of transformer output being converted to direct current.Dispatch command is according to control in the present embodiment
After analysis of strategies processed, trend or sharing of load are carried out, determines external power source generating dutation and discharge capacity incoming transport power network, led to
Transformer progress transformation inputing power is crossed to provide AC conversion for energy-storage module for direct current by energy storage grid-connected converter
Electric energy.
Energy-storage module 30, it is connected with photovoltaic generating module and plant-grid connection module, for storing photovoltaic generating module and electricity
The electric energy that source AM access module provides.In the present embodiment, energy-storage module is by moving back fortune battery as energy-storage battery, when electrokinetic cell can not
Meet residual capacity can be utilized to have the function that assets recycling as energy-storage battery under conditions of onboard running,
Both economical practicality, certain limit delay battery dispose the problem of producing.
Control module 40, the electric energy for the electric energy output regulation power supply AM access module according to photovoltaic generating module export
Amount.Such as a charge volume threshold value can be preset, can be with when the electric energy output of photovoltaic generating module can reach the threshold value
Control plant-grid connection module no longer exports electric energy, when the electric energy output of photovoltaic generating module can not reach the threshold value, then root
Plant-grid connection module electric energy supplement is controlled according to difference.
Control module is photovoltaic switch board in the present embodiment, is made up of DC/DC converters and photovoltaic monitoring system.Wherein,
DC/DC is high-frequency soft switch isolated converter, has maximal power tracing function；Monitoring system is made using high-performance server
For the monitoring host computer of system, can the uninterrupted monitoring for carrying out service data in daily 24 hours, monitoring system can continuously record fortune
Row data and fault data.Real-time traffic information, warning message to photovoltaic generation comprehensively monitored, and to photovoltaic generation
Many statistics and analysis are carried out, the control in all directions to photovoltaic generation is realized and retains photovoltaic generation history curve.
Control module control photovoltaic generation and AC network power supply in the present embodiment cooperate, and preferably meet following bar
Part：1st, photovoltaic generation all of；2nd, the electric energy of enough time supplies after Demand-side electrical breakdown；3rd, peak load shifting and timesharing electricity
Valency；4th, photovoltaic generation curve, weather forecasting curve, Demand-side electric energy need curve and Demand-side important level.
Charging system provided in an embodiment of the present invention, can according to weather condition, Demand-side electrical energy demands and energy storage situation,
Effectively coordinate the electric energy output of photovoltaic generating module and the electric energy output of AC power access, when photovoltaic generation provides electricity
Can abundance have and can also provide electric energy for external power source during residue so that photovoltaic generation can be utilized sufficiently, while energy storage is electric
Using fortune battery is moved back, assets rationally recycle, economical and practical in pond.
Mode is preferably carried out as one, above-mentioned control module determines photovoltaic generation according to weather parameters and conversion efficiency
Module and determines plant-grid connection module second in the first electric energy output valve of the first scheduled time slot according to the first electric energy output valve
Second electric energy output valve of required offer during scheduled time slot.
Further, control module can determine power supply according to the current reserve of electricity of the first electric energy output valve and energy-storage module
Second electric energy output valve of AM access module required offer in the second scheduled time slot.
Specifically, control module can be counted according to monitoring data conventional photovoltaic operation curve, prediction next day weather,
Internal loading situation of standing and high-pressure side situation, the generated energy of comprehensive descision photovoltaic is carried out, according to generated energy and current energy-storage battery
Storing electricity is so that it is determined that need external power source provides how many electric energy supplement.When anticipation is faint without illumination or illumination by second day
When, side state energy-storage battery need to be charged using external power source in the low power consumption phase (night), can set according to demand
One threshold value, so that it is guaranteed that the in emergency circumstances reserved value of electricity, while it is also contemplated that photovoltaic energy after illumination restoration intensity
Make full use of.
In the present embodiment, charging system also includes：Electric energy output module, is connected with energy-storage module, for external device (ED)
Export the electric energy of energy-storage module storage；Wherein, electric energy output module can include：Current transformer, for export energy-storage module
Direct current is converted to alternating current；Transformer, for connecting outside power transmission network.
Electric energy output module and plant-grid connection module can be wholely set in the present embodiment, i.e., only need a current transformer and one
Individual transformer realizes electric energy two directions' inputing and output, and when weather condition is good, photovoltaic generation can convert substantial amounts of electric energy,
If there remains electricity in addition to it can meet the needs of local, in this case, can be discharged by energy-storage battery to current transformer,
By the way that DC conversion into alternating current, is powered by transformer to AC network.
The charging system that the present embodiment provides, workflow are as shown in Figure 2：
Photovoltaic cell 1 connects the input of header box 2 by output end after internal connection in series-parallel, and the output end of header box 2 connects
The input of photovoltaic switch board 3 is connected to, the output end of photovoltaic switch board 3 is connected with energy-storage battery 7, and AC network 4 passes through change
Depressor 5 is connected after adjusting voltage by energy storage grid-connected converter 6 with energy-storage battery 7, and energy storage grid-connected converter is that by
The device of energy in bidirectional flow, when photovoltaic generation abundance has residue, energy-storage battery passes through energy storage grid-connected converter and transformer
Discharge to external power source, when photovoltaic generation power deficiency, external power source is by transformer and energy storage grid-connected converter to energy storage
Module charges.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (8)
- A kind of 1. charging system, it is characterised in that including：Photovoltaic generating module, for converting solar energy into electric energy；Plant-grid connection module, for accessing the electric energy of external power source offer；Energy-storage module, be connected with the photovoltaic generating module and plant-grid connection module, for store the photovoltaic generating module and The electric energy that the plant-grid connection module provides；Control module, the electric energy for adjusting the plant-grid connection module according to the electric energy output of the photovoltaic generating module are defeated Output.
- 2. charging system according to claim 1, it is characterised in that also include：Electric energy output module, it is connected with the energy-storage module, for exporting the electric energy of the energy-storage module storage to external device (ED)；The control module is additionally operable to control the energy-storage module to export to the electric energy according to the reserve of electricity of the energy-storage module The electric energy of module output storage.
- 3. charging system according to claim 2, it is characterised in that the electric energy output module includes current transformer and transformation Device；Current transformer, the direct current for the energy-storage module to be exported are converted to alternating current；Transformer, for connecting outside power transmission network.
- 4. charging system according to claim 1, it is characterised in that the plant-grid connection module includes transformer and unsteady flow Device, the outside power transmission network of transformer connection, the current transformer are connected with the transformer and the energy-storage module；The control Module sends dispatch command according to the electric energy output of the photovoltaic generating module to the transformer, so that the transformer root Corresponding dispatch deal is carried out to external electrical network inputing power according to the instruction.
- 5. charging system according to claim 4, it is characterised in that the current transformer is used for export the transformer Alternating current is converted to direct current.
- 6. charging system according to claim 1, it is characterised in that the control module is used for according to weather parameters and turned Change efficiency and determine first electric energy output valve of the photovoltaic generating module in the first scheduled time slot, and according at least to the described first electricity Energy output valve determines the second electric energy output valve of the plant-grid connection module required offer in the second scheduled time slot.
- 7. charging system according to claim 6, it is characterised in that the control module is used for according to first electric energy The current reserve of electricity of output valve and the energy-storage module determines plant-grid connection module required offer in the second scheduled time slot The second electric energy output valve.
- 8. charging system according to claim 1, it is characterised in that the photovoltaic generating module includes：At least one photovoltaic cell, for converting solar energy into electric energy；Confluence module, for converging to the electric energy that photovoltaic cell changes into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710605948.3A CN107359636B (en) | 2017-07-24 | 2017-07-24 | Charging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710605948.3A CN107359636B (en) | 2017-07-24 | 2017-07-24 | Charging system |
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| Publication Number | Publication Date |
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| CN107359636A true CN107359636A (en) | 2017-11-17 |
| CN107359636B CN107359636B (en) | 2020-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710605948.3A Active CN107359636B (en) | 2017-07-24 | 2017-07-24 | Charging system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109435739A (en) * | 2018-09-27 | 2019-03-08 | 苏州融硅新能源科技有限公司 | New energy charging station system and its control method, electronic equipment, storage medium |
| CN116054738A (en) * | 2023-03-21 | 2023-05-02 | 呼和浩特市语能科技有限责任公司 | Solar power generation monitoring management system and method of Internet of things |
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| CN203261261U (en) * | 2013-05-09 | 2013-10-30 | 国家电网公司 | Community intelligent power-using system |
| US20140297051A1 (en) * | 2013-03-26 | 2014-10-02 | Northeastern University | Energy resource-grid-load automatic control system of smart microgrid and control methods thereof |
| CN106329555A (en) * | 2015-06-26 | 2017-01-11 | 比亚迪股份有限公司 | Photovoltaic energy storage microgrid system and control method thereof |
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2017
- 2017-07-24 CN CN201710605948.3A patent/CN107359636B/en active Active
Patent Citations (4)
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| CN102280940A (en) * | 2011-09-06 | 2011-12-14 | 天宝电子（惠州）有限公司 | new energy distributed energy storage application control system |
| US20140297051A1 (en) * | 2013-03-26 | 2014-10-02 | Northeastern University | Energy resource-grid-load automatic control system of smart microgrid and control methods thereof |
| CN203261261U (en) * | 2013-05-09 | 2013-10-30 | 国家电网公司 | Community intelligent power-using system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109435739A (en) * | 2018-09-27 | 2019-03-08 | 苏州融硅新能源科技有限公司 | New energy charging station system and its control method, electronic equipment, storage medium |
| CN116054738A (en) * | 2023-03-21 | 2023-05-02 | 呼和浩特市语能科技有限责任公司 | Solar power generation monitoring management system and method of Internet of things |
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| CN107359636B (en) | 2020-06-23 |
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Address after: Shinan District 266003 Shandong city of Qingdao province Liujiaxia Road No. 17 in Qingdao power supply company 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 in Qingdao power supply company Applicant before: Qingdao Power Supply Company, State Grid Shandong Electric Power Company Applicant before: State Grid Corporation |
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