CN103825294A - Energy storage inverter suitable for distributed new energy electric power - Google Patents
Energy storage inverter suitable for distributed new energy electric power Download PDFInfo
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- CN103825294A CN103825294A CN201210463917.6A CN201210463917A CN103825294A CN 103825294 A CN103825294 A CN 103825294A CN 201210463917 A CN201210463917 A CN 201210463917A CN 103825294 A CN103825294 A CN 103825294A
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- 238000004146 energy storage Methods 0.000 title abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 32
- 230000005611 electricity Effects 0.000 claims description 30
- 238000009825 accumulation Methods 0.000 claims description 19
- 238000002955 isolation Methods 0.000 claims description 18
- 230000005622 photoelectricity Effects 0.000 claims description 18
- 230000001681 protective effect Effects 0.000 claims description 18
- 238000007599 discharging Methods 0.000 claims description 11
- 238000010276 construction Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 210000004027 cell Anatomy 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 229910052744 lithium Inorganic materials 0.000 description 1
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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
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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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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Abstract
The invention belongs to the technical field of distributed new energy electric power, and specifically relates to an energy storage inverter suitable for distributed new energy electric power. A charge bus end and a discharge bus end are respectively arranged at a charge and discharge bus end, and unidirectional conduction of a power line at a charge end and a discharge end is realized respectively through backflow prevention diode circuits of different directions, such that a bidirectional single-path charge and discharge bus becomes unidirectional double electric power paths. At the same time, storage batteries are divided into more than two packs, a system controller enables the storage battery packs to remain at the charge bus end through storage battery electric control switches when the charging process of the storage battery packs which enter a charge mode process is not finished yet, and enables the storage battery packs which enter a discharge mode process to remain at the discharge bus end during a discharge process such that the storage batteries are controlled and can execute and finish the whole charge and discharge process, the workflow of the storage batteries are substantially improved, the life of the storage batteries is prolonged, and the storage batteries can work and operate in a sound manner.
Description
Technical field
The invention belongs to distributed new power technology field, be specifically related to a kind of accumulation of energy inverter that is applicable to distributed new electric power.
Background technology
In recent years, photoelectricity, wind-powered electricity generation distributed new forms of energy electric power obtain support energetically the more and more extensive use of national governments.But the photoelectricity of new forms of energy, wind-powered electricity generation are owing to being batch (-type) electric power, and power supply instability generates electricity; No matter be grid-connected power supply in application, or all wish from net power supply the object that it can stable power-supplying or is reached stable power-supplying and improved power supply quality by electric power storage complementation.For this reason, prior art has developed accumulation of energy inverter, makes energy-storage system institute electric power storage power and photoelectricity, wind-electricity complementary jointly be converted to stable alternating current by inverter circuit and supplies with user load or electrical network, meets user power utilization needs.
For accumulation of energy inverter, no matter be from net type accumulation of energy inverter or grid type accumulation of energy inverter, adopt single group storage battery group or adopt plurality of groups of storage batteries group no matter be, the implementation of prior art all adopts batteries to be connected on altogether public discharging and recharging on bus end, discharges and recharges bus and link carries out charging and discharging by single.As depicted in figs. 1 and 2.
Although prior art can realize photoelectricity, wind-powered electricity generation and electric power storage complementation, but because being connected to discharge and recharge, batteries shares on single bus and terminal, discharging and recharging by the variation of generating, power supply of storage battery determined, cause storage battery all possibility charge or discharge at any time, irregular and can not be controlled, make storage battery can not carry out on request complete charging and discharge process.Well-known conventional storage battery is as plumbic acid maintenance-free storage battery, its life-spans such as lithium electrical storage cell with discharge and recharge number of times and discharge and recharge quality and process is closely related.Therefore the accumulation of energy inverter of existing techniques in realizing can not complete the real management and control of charging, discharge process to storage battery, has had a strong impact on storage battery usefulness and life-span.
Summary of the invention
In order to improve the above-mentioned defect of prior art, make accumulation of energy inverter can complete to storage battery the real management and control of charging, discharge process, improve storage battery usefulness and life-span.The present invention proposes a kind of accumulation of energy inverter that is applicable to distributed new electric power, comprise: wind-powered electricity generation input, photoelectricity input, wind-powered electricity generation DC control circuit, photoelectric direct flow control circuit, batteries A, batteries B, the automatically controlled diverter switch A of storage battery, the automatically controlled diverter switch B of storage battery, counterflow-preventing diode circuit A, counterflow-preventing diode circuit B, counterflow-preventing diode circuit B, counterflow-preventing diode circuit B, discharge and recharge DC/DC control circuit, system controller, two-way inverter circuit, Alternating Current Power Supply output, AC network link, control bus, charging end power line, discharge end power line, DC bus, accumulator cell charging and discharging bus and isolation protective circuit composition, it is characterized in that:
Wind-powered electricity generation input is by wind-powered electricity generation DC control circuit and connect DC bus, connects in turn isolation protective circuit and Alternating Current Power Supply output and AC network link by DC bus by two-way inverter circuit, forms generating Alternating Current Power Supply and feed path;
Photoelectricity input connects DC bus by photoelectric direct flow control circuit, connects in turn isolation protective circuit and Alternating Current Power Supply output and AC network link by DC bus by two-way inverter circuit, forms photoelectricity Alternating Current Power Supply and feed path;
Batteries A and batteries B switch by the regulation and control of the automatically controlled diverter switch A of storage battery, the automatically controlled diverter switch B of storage battery respectively, and be connected and discharge and recharge DC/DC control circuit and access DC bus with counterflow-preventing diode circuit B through discharge end power line, connect in turn isolation protective circuit and Alternating Current Power Supply output and AC network link by DC bus by two-way inverter circuit, form electric power storage Alternating Current Power Supply and feed path;
Batteries A and batteries B switch by the regulation and control of the automatically controlled diverter switch A of storage battery, the automatically controlled diverter switch B of storage battery respectively, make its controlled being connected on the power line of charging end connect and discharge and recharge DC/DC control circuit and access DC bus through counterflow-preventing diode circuit B, connect counterflow-preventing diode circuit B and wind-powered electricity generation DC control circuit to wind-powered electricity generation input by DC bus, form wind-powered electricity generation electric power storage path;
Batteries A and batteries B switch by the regulation and control of the automatically controlled diverter switch A of storage battery, the automatically controlled diverter switch B of storage battery respectively, make its controlled being connected on the power line of charging end connect and discharge and recharge DC/DC control circuit and access DC bus through counterflow-preventing diode circuit B, connect counterflow-preventing diode circuit B and photoelectric direct flow control circuit to photoelectricity input by DC bus, form photoelectricity electric power storage path;
Batteries A and batteries B switch by the regulation and control of the automatically controlled diverter switch A of storage battery, the automatically controlled diverter switch B of storage battery respectively, make its controlled being connected on the power line of charging end connect and discharge and recharge DC/DC control circuit and access DC bus through counterflow-preventing diode circuit B, connect two-way inverter circuit by DC bus and connect in turn isolation protective circuit and AC network link, form AC network power supply electric power storage path;
System controller is connected respectively wind-powered electricity generation DC control circuit, photoelectric direct flow control circuit, the automatically controlled diverter switch A of storage battery, the automatically controlled diverter switch B of storage battery, is discharged and recharged DC/DC control circuit, two-way inverter circuit and isolation protective circuit, construction system control link by control bus;
Be applicable to an accumulation of energy inverter for distributed new electric power, it forms and the method characteristic of control is: storage battery is divided in groups, and >=2 groups; Pass through respectively the automatically controlled diverter switch A of storage battery, the automatically controlled diverter switch B of storage battery by system controller real-time monitoring, controlled being connected to by counterflow-preventing diode circuit A and counterflow-preventing diode circuit B of batteries A, batteries B realized on the charging end power line of charging and discharging one direction conducting or on discharge end power line, make the batteries that enters charge mode in the time that charging process does not complete, all the time on the power line of charging end; The batteries that enters discharge mode in discharge process all the time on discharge end power line.
The plurality of groups of storage batteries group that technical solution of the present invention forms by batteries A, batteries B, switch by the regulation and control of the automatically controlled diverter switch A of storage battery, the automatically controlled diverter switch B of storage battery respectively, make its controlled being connected on the power line of charging end or on discharge end power line, realize the conducting of charging and discharging one direction by counterflow-preventing diode circuit A and counterflow-preventing diode circuit B, thereby guarantee controlled charging and the power generation process of completing of batteries.
A kind of accumulation of energy inverter that is applicable to distributed new electric power of the present invention, by charging bus end and electric discharge bus end are set respectively, and realizes charging, electric discharge two ends power line one-way conduction by counterflow-preventing diode circuit, forms the two electrical path of one direction.Storage battery is divided into more than two, makes the batteries that enters charge mode process in the time that charging process does not complete, all the time in charging bus end; The batteries that makes to enter discharge mode process in discharge process all the time in electric discharge bus end, thereby make storage battery controlled and can complete charging and the overall process of electric discharge, greatly improve the workflow of storage battery, improve the life-span of storage battery, make storage battery working healthily and operation.
Accompanying drawing explanation
Fig. 1 is the schematic block diagram of existing techniques in realizing energy storage inverter mode one;
Fig. 2 is the schematic block diagram of existing techniques in realizing energy storage inverter mode two;
Fig. 3 is a kind of accumulation of energy inverter schematic block diagram that is applicable to distributed new electric power that the technology of the present invention realizes.
Embodiment
As examples of implementation, by reference to the accompanying drawings a kind of accumulation of energy inverter that is applicable to distributed new electric power is described, still, technology of the present invention and scheme are not limited to the content that the present embodiment provides.
Accompanying drawing 3 has provided a kind of accumulation of energy inverter schematic block diagram that is applicable to distributed new electric power.As shown in Figure 3, a kind of accumulation of energy inverter that is applicable to distributed new electric power, comprising: wind-powered electricity generation input (1), photoelectricity input (2), wind-powered electricity generation DC control circuit (3), photoelectric direct flow control circuit (4), batteries A (5a), batteries B (5b), the automatically controlled diverter switch A of storage battery (6a), the automatically controlled diverter switch B of storage battery (6b), counterflow-preventing diode circuit A (7a), counterflow-preventing diode circuit B (7b), counterflow-preventing diode circuit B (7c), counterflow-preventing diode circuit B (7d), discharge and recharge DC/DC control circuit (8), system controller (9), two-way inverter circuit (10), Alternating Current Power Supply output (11a), AC network link (11b), control bus (12), charging end power line (13a), discharge end power line (13b), DC bus (14), accumulator cell charging and discharging bus (15) and isolation protective circuit (16) composition, it is characterized in that:
Wind-powered electricity generation input (1) is by wind-powered electricity generation DC control circuit (3) and connect DC bus (14), connect in turn isolation protective circuit (16) and Alternating Current Power Supply output (11a) and AC network link (11b) by DC bus (14) by two-way inverter circuit (10), form wind-powered electricity generation generating Alternating Current Power Supply and feed path;
Photoelectricity input (2) connects DC bus (14) by photoelectric direct flow control circuit (4), connect in turn isolation protective circuit (16) and Alternating Current Power Supply output (11a) and AC network link (11b) by DC bus (14) by two-way inverter circuit (10), form photovoltaic power generation Alternating Current Power Supply and feed path;
Batteries A (5a) and batteries B (5b) are respectively by the automatically controlled diverter switch A of storage battery (6a), the regulation and control of the automatically controlled diverter switch B of storage battery (6b) are switched, and be connected with counterflow-preventing diode circuit B (7b) and discharge and recharge DC/DC control circuit (8) and access DC bus (14) through discharge end power line (13b), connect in turn isolation protective circuit (16) and Alternating Current Power Supply output (11a) and AC network link (11b) by DC bus (14) by two-way inverter circuit (10), form electric power storage electric discharge Alternating Current Power Supply and feed path,
Batteries A (5a) and batteries B (5b) switch by the regulation and control of the automatically controlled diverter switch A of storage battery (6a), the automatically controlled diverter switch B of storage battery (6b) respectively, make its controlled charging end power line (13a) that is connected to above connect and discharge and recharge DC/DC control circuit (8) and access DC bus (14) through counterflow-preventing diode circuit B (7a), by DC bus (14) connect counterflow-preventing diode circuit B (7c) and wind-powered electricity generation DC control circuit (3) to wind-powered electricity generation input (1), form wind-powered electricity generation electric power storage path;
Batteries A (5a) and batteries B (5b) switch by the regulation and control of the automatically controlled diverter switch A of storage battery (6a), the automatically controlled diverter switch B of storage battery (6b) respectively, make its controlled charging end power line (13a) that is connected to above connect and discharge and recharge DC/DC control circuit (8) and access DC bus (14) through counterflow-preventing diode circuit B (7a), by DC bus (14) connect counterflow-preventing diode circuit B (7d) and photoelectric direct flow control circuit (4) to photoelectricity input (2), form photoelectricity electric power storage path;
Batteries A (5a) and batteries B (5b) are respectively by the automatically controlled diverter switch A of storage battery (6a), the regulation and control of the automatically controlled diverter switch B of storage battery (6b) are switched, make its controlled charging end power line (13a) that is connected to above connect and discharge and recharge DC/DC control circuit (8) and access DC bus (14) through counterflow-preventing diode circuit B (7a), connect two-way inverter circuit (10) by DC bus (14) and connect in turn isolation protective circuit (16) and AC network link (11b), form AC network power supply electric power storage path,
System controller (9) is connected respectively wind-powered electricity generation DC control circuit (3), photoelectric direct flow control circuit (4), the automatically controlled diverter switch A of storage battery (6a), the automatically controlled diverter switch B of storage battery (6b), is discharged and recharged DC/DC control circuit (8), two-way inverter circuit (10) and isolation protective circuit (16), construction system control link by control bus (12);
A kind of accumulation of energy inverter that is applicable to distributed new electric power of the present invention, it forms and the method characteristic of control is: storage battery is divided in groups, and >=2 groups, respectively by the automatically controlled diverter switch A of storage battery (6a), the automatically controlled diverter switch B of storage battery (6b) is by system controller (9) real-time monitoring, make batteries A (5a), batteries B (5b) is controlled to be connected to by counterflow-preventing diode circuit A (7a) and counterflow-preventing diode circuit B (7b) and to realize on the upper or discharge end power line (13b) of the charging end power line (13a) of charging and discharging one direction conducting, make the batteries that enters charge mode in the time that charging process does not complete, all the time on charging end power line (13a), the batteries that enters discharge mode in discharge process all the time on discharge end power line (13b).
As mentioned above, a kind of accumulation of energy inverter that is applicable to distributed new electric power of the present invention, by charging bus end and electric discharge bus end being set respectively discharging and recharging bus end, and realize charging, electric discharge two ends power line one-way conduction by the counterflow-preventing diode circuit of different directions respectively, make the bus that discharges and recharges of two-way single path become the two electrical path of one direction.Storage battery is divided into more than twoly simultaneously, makes the batteries that enters charge mode process by system controller (9) in the time that charging process does not complete by the automatically controlled diverter switch of storage battery, all the time in charging bus end; The batteries that makes to enter discharge mode process in discharge process all the time in electric discharge bus end, thereby make storage battery controlled and can complete charging and the overall process of electric discharge, greatly improve the workflow of storage battery, improve the life-span of storage battery, make storage battery working healthily and operation.
Claims (2)
1. one kind is applicable to the accumulation of energy inverter of distributed new electric power, comprise: wind-powered electricity generation input (1), photoelectricity input (2), wind-powered electricity generation DC control circuit (3), photoelectric direct flow control circuit (4), batteries A (5a), batteries B (5b), the automatically controlled diverter switch A of storage battery (6a), the automatically controlled diverter switch B of storage battery (6b), counterflow-preventing diode circuit A (7a), counterflow-preventing diode circuit B (7b), counterflow-preventing diode circuit B (7c), counterflow-preventing diode circuit B (7d), discharge and recharge DC/DC control circuit (8), system controller (9), two-way inverter circuit (10), Alternating Current Power Supply output (11a), AC network link (11b), control bus (12), charging end power line (13a), discharge end power line (13b), DC bus (14), accumulator cell charging and discharging bus (15) and isolation protective circuit (16) composition, it is characterized in that:
Wind-powered electricity generation input (1) is by wind-powered electricity generation DC control circuit (3) and connect DC bus (14), connect in turn isolation protective circuit (16) and Alternating Current Power Supply output (11a) and AC network link (11b) by DC bus (14) by two-way inverter circuit (10), form wind-powered electricity generation generating Alternating Current Power Supply and feed path;
Photoelectricity input (2) connects DC bus (14) by photoelectric direct flow control circuit (4), connect in turn isolation protective circuit (16) and Alternating Current Power Supply output (11a) and AC network link (11b) by DC bus (14) by two-way inverter circuit (10), form photoelectricity Alternating Current Power Supply and feed path;
Batteries A (5a) and batteries B (5b) are respectively by the automatically controlled diverter switch A of storage battery (6a), the regulation and control of the automatically controlled diverter switch B of storage battery (6b) are switched, and be connected with counterflow-preventing diode circuit B (7b) and discharge and recharge DC/DC control circuit (8) and access DC bus (14) through discharge end power line (13b), connect in turn isolation protective circuit (16) and Alternating Current Power Supply output (11a) and AC network link (11b) by DC bus (14) by two-way inverter circuit (10), form electric power storage Alternating Current Power Supply and feed path,
Batteries A (5a) and batteries B (5b) switch by the regulation and control of the automatically controlled diverter switch A of storage battery (6a), the automatically controlled diverter switch B of storage battery (6b) respectively, make its controlled charging end power line (13a) that is connected to above connect and discharge and recharge DC/DC control circuit (8) and access DC bus (14) through counterflow-preventing diode circuit B (7a), by DC bus (14) connect counterflow-preventing diode circuit B (7c) and wind-powered electricity generation DC control circuit (3) to wind-powered electricity generation input (1), form wind-powered electricity generation electric power storage path;
Batteries A (5a) and batteries B (5b) switch by the regulation and control of the automatically controlled diverter switch A of storage battery (6a), the automatically controlled diverter switch B of storage battery (6b) respectively, make its controlled charging end power line (13a) that is connected to above connect and discharge and recharge DC/DC control circuit (8) and access DC bus (14) through counterflow-preventing diode circuit B (7a), by DC bus (14) connect counterflow-preventing diode circuit B (7d) and photoelectric direct flow control circuit (4) to photoelectricity input (2), form photoelectricity electric power storage path;
Batteries A (5a) and batteries B (5b) are respectively by the automatically controlled diverter switch A of storage battery (6a), the regulation and control of the automatically controlled diverter switch B of storage battery (6b) are switched, make its controlled charging end power line (13a) that is connected to above connect and discharge and recharge DC/DC control circuit (8) and access DC bus (14) through counterflow-preventing diode circuit B (7a), connect two-way inverter circuit (10) by DC bus (14) and connect in turn isolation protective circuit (16) and AC network link (11b), form AC network power supply electric power storage path,
System controller (9) is connected respectively wind-powered electricity generation DC control circuit (3), photoelectric direct flow control circuit (4), the automatically controlled diverter switch A of storage battery (6a), the automatically controlled diverter switch B of storage battery (6b), is discharged and recharged DC/DC control circuit (8), two-way inverter circuit (10) and isolation protective circuit (16), construction system control link by control bus (12).
2. a kind of accumulation of energy inverter that is applicable to distributed new electric power according to claim 1, it forms with the method characteristic of controlling and is: storage battery is divided in groups, and >=2 groups, respectively by the automatically controlled diverter switch A of storage battery (6a), the automatically controlled diverter switch B of storage battery (6b) is by system controller (9) real-time monitoring, make batteries A (5a), batteries B (5b) is controlled to be connected to by counterflow-preventing diode circuit A (7a) and counterflow-preventing diode circuit B (7b) and to realize on the upper or discharge end power line (13b) of the charging end power line (13a) of charging and discharging one direction conducting, make the batteries that enters charge mode in the time that charging process does not complete, all the time on charging end power line (13a), the batteries that enters discharge mode in discharge process all the time on discharge end power line (13b).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210463917.6A CN103825294A (en) | 2012-11-19 | 2012-11-19 | Energy storage inverter suitable for distributed new energy electric power |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836279A (en) * | 2015-04-23 | 2015-08-12 | 季庆达 | Battery power supply apparatus |
| CN107086615A (en) * | 2016-02-15 | 2017-08-22 | 周锡卫 | A kind of ups system based on active maintenance function expanding device |
| CN107453703A (en) * | 2017-08-16 | 2017-12-08 | 上海质卫环保科技有限公司 | A kind of solar cell PID recovers and prevention component |
| CN109193885A (en) * | 2018-09-07 | 2019-01-11 | 浙江艾罗网络能源技术有限公司 | The control system of photovoltaic energy storage inverter |
| CN110571836A (en) * | 2019-08-28 | 2019-12-13 | 李美玉 | Wind power generation energy storage matching circuit and control method thereof |
| CN111162550A (en) * | 2019-12-18 | 2020-05-15 | 安徽天尚清洁能源科技有限公司 | Micro-grid complementary power supply method through storage battery transition |
| CN112787356A (en) * | 2019-11-11 | 2021-05-11 | 阿里巴巴集团控股有限公司 | Discharge device, system, method and storage medium |
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| CN112787356B (en) * | 2019-11-11 | 2024-08-02 | 阿里巴巴集团控股有限公司 | Discharge device, system, method and storage medium |
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