CN104868534B - Photovoltaic energy storage inverter energy management method - Google Patents
Photovoltaic energy storage inverter energy management method Download PDFInfo
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- CN104868534B CN104868534B CN201510237157.0A CN201510237157A CN104868534B CN 104868534 B CN104868534 B CN 104868534B CN 201510237157 A CN201510237157 A CN 201510237157A CN 104868534 B CN104868534 B CN 104868534B
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- storage inverter
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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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- 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
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to a kind of photovoltaic energy storage inverter energy management method, realized by bidirectional energy-storage inverter, it makes photovoltaic generating system have generate power for their own use mode of operation and Time-sharing control pattern；Under mode of operation of generating power for their own use, the power parameter of real-time detection load simultaneously passes to bidirectional energy-storage inverter, and bidirectional energy-storage inverter determines working condition and the state parameter of battery according to the power parameter of load.Under Time-sharing control pattern, input control command to bidirectional energy-storage inverter, in control command, comprise time interval information and power data information, bidirectional energy-storage inverter controls cell operating status according to control command.The method of the present invention is capable of the management of photovoltaic energy controllable type, overcome common combining inverter energy and can only be transported to electrical network, or can only be by local load consumption, the shortcoming that dump energy wastes, solving photovoltaic generation peak affects the stability problem of electrical network, also maximizes the income of the system that improves simultaneously.
Description
Technical field
The present invention relates to a kind of field of photovoltaic power generation is and in particular to a kind of manager to the energy content of battery for photovoltaic DC-to-AC converter
Method.
Background technology
Photovoltaic power generation grid-connected inverter is more universal at present, and photovoltaic energy storage inverter is mainly applied also based on off-network.Pure
Combining inverter energy can only be transported to electrical network it is impossible to realize energy energy storage and intelligent management, can be right when network load is relatively low
Electrical network forms impact and affects grid stability, relatively low for the regional photovoltaic application economic benefit having tou power price.
Content of the invention
It is an object of the invention to provide one kind is intelligently managed to photovoltaic generating system, it is to avoid its impact electrical network is simultaneously
Improve the photovoltaic energy storage inverter energy management method of income.
For reaching above-mentioned purpose, the technical solution used in the present invention is：
A kind of photovoltaic energy storage inverter energy management method, for being managed to the working condition of photovoltaic generating system,
Described photovoltaic generating system includes battery, load and bidirectional energy-storage inverter, described photovoltaic energy storage inverter energy pipe
Reason method is passed through described bidirectional energy-storage inverter and is realized, and it makes described photovoltaic generating system have mode of operation of generating power for their own use
With Time-sharing control pattern；
Under described mode of operation of generating power for their own use, the power parameter P of the load described in real-time detectionMAnd described in passing to
Bidirectional energy-storage inverter, as the power parameter P of the load being gatheredMBuy electric work more than the maximum in described photovoltaic generating system
Rate PMaxBuyWhen, the described battery described in bidirectional energy-storage inverter control proceeds to discharge condition；Power when the load being gathered
Parameter PMSell electrical power P more than the maximum in described photovoltaic generating systemMaxSellAnd the current output of described battery
PBatVAMore than or equal to its minimum discharge power PMinOutWhen, described bidirectional energy-storage inverter reduces the given of described battery
Output；Power parameter P when the load being gatheredMSell electrical power more than the maximum in described photovoltaic generating system
PMaxSellAnd the current output P of described batteryBatVALess than its minimum discharge power PMinOutWhen, described inverter control
The described battery of system proceeds to charged state；
Under described Time-sharing control pattern, input control command to described bidirectional energy-storage inverter, described control
Time interval information and power data information is comprised, described bidirectional energy-storage inverter is according to described control command control in order
The described battery of system, makes in the described time corresponding to time interval information, described battery is according to described power data
Power discharge corresponding to information.
The power parameter of described load in above scheme, is gathered by the intelligent electric meter being connected with described load,
Described intelligent electric meter is connected with signal with described bidirectional energy-storage inverter.By managing end equipment to described bidirectional energy-storage
The described control command of inverter input, described management end equipment is connected with signal with described bidirectional energy-storage inverter.
When battery described in when described bidirectional energy-storage inverter control proceeds to discharge condition, described inverter control institute
The given output P of the battery statedBatOut=PBatVA+|PM|/2, wherein, PBatVAFor the current output of described battery.
Power parameter P when the load being gatheredMSell electrical power P more than the maximum in described photovoltaic generating systemMaxSell
And the current output P of described batteryBatVAMore than or equal to its minimum discharge power PMinOutWhen, described bidirectional energy-storage
Inverter reduces the given output P of described batteryBatOut=PBatVA-|PM|/2.
Under described mode of operation of generating power for their own use, the power parameter P of described loadMReal-time detection frequency with described
Bidirectional energy-storage inverter MPPT track frequency consistent.
Under described Time-sharing control pattern, in described control command, comprise one or more snippets described time interval information
And its corresponding one or more power data information.
Because technique scheme is used, the present invention compared with prior art has following advantages：Method of the present invention energy
Enough realize the management of photovoltaic energy controllable type, overcome common combining inverter energy and can only be transported to electrical network, or can only be by this
Ground load consumption, the shortcoming that dump energy wastes, solve photovoltaic generation peak affects the stability problem of electrical network, also the most simultaneously
Bigization improves the income of system.
Brief description
Accompanying drawing 1 is that the flow process of the mode of operation of generating power for their own use of photovoltaic energy storage inverter energy management method of the present invention is illustrated
Figure.
Accompanying drawing 2 is that the principle of the Time-sharing control pattern in the photovoltaic energy storage inverter energy management method of the present invention is illustrated
Figure.
Accompanying drawing 3 is that the principle of the Time-sharing control pattern in the photovoltaic energy storage inverter energy management method of the present invention is illustrated
Figure.
Specific embodiment
The invention will be further described for shown embodiment below in conjunction with the accompanying drawings.
Embodiment one：Photovoltaic generating system includes battery, load and bidirectional energy-storage inverter, and wherein, bidirectional energy-storage is inverse
Become the work that device controls battery.A kind of photovoltaic energy storage inversion for being managed to the working condition of above-mentioned photovoltaic generating system
Device energy management method, is realized by bidirectional energy-storage inverter, its make photovoltaic generating system have generate power for their own use mode of operation and
Time-sharing control pattern.
1st, generate power for their own use mode of operation
Referring to shown in accompanying drawing 1, under mode of operation of generating power for their own use, by the intelligent electric meter real-time detection being connected with load
The power parameter P of loadM, intelligent electric meter connected with signal with bidirectional energy-storage inverter, the work(of the load that intelligent electric meter collects
Rate parameter PMPass to bidirectional energy-storage inverter.
Power parameter P when the load being gatheredMBuy electrical power P more than the maximum in photovoltaic generating systemMaxBuyWhen, it is
System is in heavy load condition and photovoltaic energy is not enough, then bidirectional energy-storage inverter control battery proceeds to discharge condition.Now, inversion
Device controls the given output P of batteryBatOut=PBatVA+|PM|/2, wherein, PBatVAFor the current output of battery, battery
According to given output PBatOutElectric discharge.This given output PBatOutIt is gradually increased, then battery is according to given output
PBatOutThe actual power of electric discharge is also gradually increased.
Power parameter P when the load being gatheredMSell electrical power P more than the maximum in photovoltaic generating systemMaxSellAnd battery
Current output PBatVAMore than or equal to its minimum discharge power PMinOutWhen, system is in load and gradually drops state or photovoltaic
Energy is sufficient, then bidirectional energy-storage inverter reduces the given output of battery, makes the given output P of batteryBatOut=
PBatVA-|PM|/2, battery is according to given output PBatOutElectric discharge.This given output PBatOutIt is gradually reduced, then battery
According to given output PBatOutThe actual power of electric discharge is also gradually reduced.
Power parameter P when the load being gatheredMSell electrical power P more than the maximum in photovoltaic generating systemMaxSellAnd battery
Current output PBatVALess than its minimum discharge power PMinOutWhen, system is in light load conditions, inverter control battery
Proceed to charged state.
Otherwise, bidirectional energy-storage inverter keeps current operating state constant.
The power parameter P of above loadMReal-time detection frequency consistent with the MPPT track frequency of bidirectional energy-storage inverter,
Guarantee power of battery input-output stability..
2nd, Time-sharing control pattern
Under Time-sharing control pattern, input control command by managing end equipment to bidirectional energy-storage inverter, management end sets
Standby connect with signal with bidirectional energy-storage inverter（Wired or wireless）.Time interval information and power data is comprised in control command
Information, bidirectional energy-storage inverter according to control command control battery, make in the time corresponding to time interval information, battery according to
Power discharge corresponding to power data information.Fall the time interval model in Time-sharing control order when the inverter system time
Enclose interior after, inverter control battery with this control command power setting parameter discharge；System time exceeds this time interval
After scope, inverter control battery proceeds to charge mode.A period of time block information and its correspondence can be comprised in control command
A power data information, as shown in Figure 2 it is also possible to comprise multi-section time block information and its corresponding multiple power datas
Information, shown in hot meal 3.This energy management mode can play the purpose of peak load shifting to electrical network, simultaneously can also according to point
When electricity price intelligent management system energy Flow, improve system benefit.
Above-described embodiment only technology design to illustrate the invention and feature, its object is to allow person skilled in the art
Scholar will appreciate that present disclosure and implements according to this, can not be limited the scope of the invention with this.All according to the present invention
Equivalence changes or modification that spirit is made, all should be included within the scope of the present invention.
Claims (7)
1. a kind of photovoltaic energy storage inverter energy management method, for being managed to the working condition of photovoltaic generating system, institute
The photovoltaic generating system stated include battery, load and bidirectional energy-storage inverter it is characterised in that：Described photovoltaic energy storage inversion
Device energy management method passes through described bidirectional energy-storage inverter and realizes, and it makes described photovoltaic generating system have to generate power for their own use
Mode of operation and Time-sharing control pattern；
Under described mode of operation of generating power for their own use, the power parameter P of the load described in real-time detectionMAnd it is two-way described in passing to
Energy storage inverter, as the power parameter P of the load being gatheredMBuy electrical power more than the maximum in described photovoltaic generating system
PMaxBuyWhen, the described battery described in bidirectional energy-storage inverter control proceeds to discharge condition；Power ginseng when the load being gathered
Number PMSell electrical power P more than the maximum in described photovoltaic generating systemMaxSellAnd the current output of described battery
PBatVAMore than or equal to its minimum discharge power PMinOutWhen, described bidirectional energy-storage inverter reduces the given of described battery
Output；Power parameter P when the load being gatheredMSell electrical power more than the maximum in described photovoltaic generating system
PMaxSellAnd the current output P of described batteryBatVALess than its minimum discharge power PMinOutWhen, described inverter control
The described battery of system proceeds to charged state；
Under described Time-sharing control pattern, input control command to described bidirectional energy-storage inverter, described control command
In comprise time interval information and power data information, described bidirectional energy-storage inverter controls institute according to described control command
The battery stated, makes in the described time corresponding to time interval information, described battery is according to described power data information
Corresponding power discharge.
2. photovoltaic energy storage inverter energy management method according to claim 1 it is characterised in that：By bearing with described
Carry the power parameter of the described load of the intelligent electric meter collection being connected, described intelligent electric meter and described bidirectional energy-storage inversion
Device connects with signal.
3. photovoltaic energy storage inverter energy management method according to claim 1 it is characterised in that：By managing end equipment
To the described control command of described bidirectional energy-storage inverter input, described management end equipment and described bidirectional energy-storage inversion
Device connects with signal.
4. photovoltaic energy storage inverter energy management method according to claim 1 it is characterised in that：When described two-way storage
When battery described in energy inverter control proceeds to discharge condition, the given output of the battery described in described inverter control
PBatOut=PBatVA+|PM|/2, wherein, PBatVAFor the current output of described battery.
5. photovoltaic energy storage inverter energy management method according to claim 1 it is characterised in that：When the load being gathered
Power parameter PMSell electrical power P more than the maximum in described photovoltaic generating systemMaxSellAnd the current output of described battery
Power PBatVAMore than or equal to its minimum discharge power PMinOutWhen, described bidirectional energy-storage inverter reduces described battery
Given output PBatOut=PBatVA-|PM|/2.
6. photovoltaic energy storage inverter energy management method according to claim 1 it is characterised in that：Described from from
With under mode of operation, the power parameter P of described loadMReal-time detection frequency and described bidirectional energy-storage inverter MPPT
Track frequency is consistent.
7. photovoltaic energy storage inverter energy management method according to claim 1 it is characterised in that：Described Time-sharing control
Under pattern, in described control command, comprise one or more snippets described time interval information and its corresponding one or more work(
Rate data message.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552952A (en) * | 2015-12-10 | 2016-05-04 | 国网上海市电力公司 | Photovoltaic-energy storage hybrid power generation system and energy management method therefor |
| CN106992590A (en) * | 2017-05-25 | 2017-07-28 | 沃太能源南通有限公司 | A kind of many logical groups mould assembly photovoltaic energy storage management systems |
| CN108063455B (en) * | 2017-12-11 | 2021-05-18 | 江苏辉伦太阳能科技有限公司 | Off-grid and grid-connected photovoltaic energy storage inverter power control method |
| CN111293720B (en) * | 2020-03-12 | 2022-06-28 | 固德威技术股份有限公司 | Parallel photovoltaic energy storage system and parallel operation control method adopted by same |
| CN116204263B (en) * | 2023-03-14 | 2024-03-12 | 深圳市晓鸟动力技术有限公司 | Intelligent management method and system for parameters of solar energy storage battery and inverter |
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| JP2003324850A (en) * | 2002-04-26 | 2003-11-14 | Nippon Telegr & Teleph Corp <Ntt> | Power demand/supply adjusting system and customer controller |
| CN102427249A (en) * | 2011-12-19 | 2012-04-25 | 天津市电力公司 | Method and system for controlling distributed micro-grid parallel operation |
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Address after: 215163 Kunlun high tech Zone, Jiangsu Province, Suzhou City Road, No. 189 Applicant after: JIANGSU GOODWE POWER SUPPLY TECHNOLOGY CO., LTD. Address before: 215163 Kunlun high tech Zone, Jiangsu Province, Suzhou City Road, No. 189 Applicant before: Jiangsu Goodwe Power Supply Technology Co., Ltd. |
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Address after: 215000 No. 90, Zijin Road, high tech Zone, Suzhou, Jiangsu Patentee after: Goodway Technology Co.,Ltd. Address before: 215163 No. 189 Kunlun mountain road, hi tech Zone, Suzhou, Jiangsu Patentee before: JIANGSU GOODWE POWER SUPPLY TECHNOLOGY Co.,Ltd. |