CN116646963A - Concurrent charge-discharge common-capacity all-vanadium liquid flow energy storage system - Google Patents
Concurrent charge-discharge common-capacity all-vanadium liquid flow energy storage system Download PDFInfo
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- CN116646963A CN116646963A CN202310708937.3A CN202310708937A CN116646963A CN 116646963 A CN116646963 A CN 116646963A CN 202310708937 A CN202310708937 A CN 202310708937A CN 116646963 A CN116646963 A CN 116646963A
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- 239000007788 liquid Substances 0.000 title claims abstract description 151
- 238000004146 energy storage Methods 0.000 title claims abstract description 60
- 229910052720 vanadium Inorganic materials 0.000 title claims abstract description 13
- 239000003792 electrolyte Substances 0.000 claims abstract description 52
- 238000007599 discharging Methods 0.000 claims abstract description 44
- 230000001360 synchronised effect Effects 0.000 claims abstract description 15
- 238000010248 power generation Methods 0.000 claims abstract description 13
- 230000005611 electricity Effects 0.000 claims description 17
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000012983 electrochemical energy storage Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000013589 supplement Substances 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
-
- 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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
-
- 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
- H02J3/004—Generation forecast, e.g. methods or systems for forecasting future energy generation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/48—Controlling the sharing of the in-phase component
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/50—Controlling the sharing of the out-of-phase component
-
- 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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
-
- 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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
-
- 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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
-
- 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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/28—The renewable source being wind energy
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a concurrent charge-discharge common-capacity all-vanadium liquid flow energy storage system, which aims to solve the technical problem that the existing battery system cannot realize simultaneous charge-discharge, and adopts the technical scheme that: the invention relates to a parallel charging and discharging common-capacity all-vanadium liquid flow energy storage system, which comprises a wind synchronous generator, a charging system, a discharging system, a self-power system, an anode electrolyte liquid storage tank, a cathode electrolyte liquid storage tank and a battery management system, wherein the wind synchronous generator is externally connected with a new energy power generation system and is connected with a contract power network, a pile in the charging and discharging system shares the anode and cathode liquid storage tanks, charging and discharging operations are realized through four circulating pumps, the self-power system is connected with the discharging system, and the power supply selection of a self-power device is realized through a quick change-over switch.
Description
Technical Field
The invention relates to the technical field of energy storage of all-vanadium redox flow batteries, in particular to a concurrent charge-discharge co-capacity all-vanadium redox flow energy storage system.
Background
The vanadium redox flow energy storage system is a novel energy storage technology with younger technology, and is particularly suitable for large-scale application occasions with high safety requirements, large energy storage capacity and flexible capacity adjustment. The safety and the capacity separation of the utility model are widely accepted in the market, and particularly the application on the power generation side and the power grid side is rapidly turned from the demonstration project to the market application project. All-vanadium liquid flow energy storage systems are accepted and favored in the market, because the liquid flow energy storage system can realize simultaneous charging and discharging besides separating the power and capacity in comparison with other electrochemical energy storage systems, such as lead-acid, lithium battery and other power and capacity fusion energy storage systems.
At present, new energy (wind power and photovoltaic) is still an unstable energy, and in practical application, charging and discharging can be performed simultaneously, and charging and discharging can be performed at any time according to practical conditions. For an electrochemical energy storage system represented by a lithium battery, because the power and the capacity are in coupling configuration, only a charging function or a discharging function can be provided at the same time, two functions can not be provided simultaneously through a battery system body, and the problem of charging and discharging simultaneously can be solved only through a bypass design of power taking of a power grid, so that a black barrier dead zone can exist for using an unstable energy source.
Disclosure of Invention
The invention aims to provide a concurrent charging and discharging common-capacity all-vanadium liquid flow energy storage system so as to solve the technical problems.
The invention aims to solve the technical problems, and is realized by adopting the following technical scheme:
the utility model provides a concurrent charge-discharge's full vanadium liquid stream energy storage system of co-capacity, includes aerogenerator, charging system, discharging system, self-power consumption system, positive pole electrolyte liquid storage pot, negative pole electrolyte liquid storage pot and battery management system, aerogenerator one end is connected with wind power generation facility 1 electricity, and the other end is connected with contract power network electricity, positive pole electrolyte is stored in the positive pole electrolyte liquid storage pot, negative pole electrolyte is stored in the negative pole electrolyte liquid storage pot;
the charging system comprises a first transformer, a unidirectional charging energy storage converter, a first electric pile group, a first circulating pump and a second circulating pump, wherein the input end of the first transformer is electrically connected with the wind-driven synchronous generator, the output end of the first transformer is electrically connected with the input end of the unidirectional charging energy storage converter, the output end of the unidirectional charging energy storage converter is electrically connected with a wiring end of the first electric pile group, the positive liquid outlet of the first electric pile group is connected with one liquid inlet of a positive electrolyte liquid storage tank through a liquid flow pipe, one liquid outlet of the positive electrolyte liquid storage tank is connected with the liquid inlet of the first circulating pump through a liquid flow pipe, the liquid outlet of the first circulating pump is connected with one liquid inlet of a negative electrolyte liquid storage tank through a liquid flow pipe, one liquid outlet of the negative electrolyte liquid storage tank is connected with the liquid inlet of the second circulating pump through a liquid flow pipe, and the liquid outlet of the second circulating pump is connected with the liquid inlet of the first electric pile group through a liquid inlet of the first electric pile;
the discharging system comprises a second electric pile group, a third circulating pump, a fourth circulating pump, a first unidirectional discharging energy storage converter and a second transformer, wherein a wiring end of the second electric pile group is electrically connected with an input end of the first unidirectional discharging energy storage converter, an output end of the first unidirectional discharging energy storage converter is electrically connected with an input end of the second transformer, an output end of the second transformer is externally connected with an electricity selling system network, an anode liquid outlet of the second electric pile group is connected with another liquid inlet of an anode electrolyte liquid storage tank through a liquid flow pipe, a liquid outlet of the other one of the anode electrolyte liquid storage tank is connected with a liquid inlet of the third circulating pump through a liquid flow pipe, a liquid outlet of the third circulating pump is connected with another liquid inlet of the second electric pile group through a liquid flow pipe, another liquid outlet of the second electric pile group is connected with another liquid inlet of a cathode electrolyte liquid storage tank through a liquid flow pipe, another liquid outlet of the cathode electrolyte liquid storage tank is connected with another liquid inlet of the fourth circulating pump through a liquid flow pipe, and a liquid outlet of the fourth circulating pump is connected with a liquid inlet of the second electric pile group through a liquid inlet of the fourth circulating pump;
the self-powered system comprises a second unidirectional discharge energy storage converter and a quick change-over switch, wherein the input end of the second unidirectional discharge energy storage converter is electrically connected with the wiring end of the second electric pile group, the output end of the second unidirectional discharge energy storage converter is respectively and electrically connected with an off-grid load electrical device and the driving contact of the quick change-over switch, the driven contact of the quick change-over switch is externally connected with an electricity selling system network, and the handle end of the quick change-over switch is electrically connected with a device of the self-powered system;
the battery management system is electrically connected with the first transformer, the unidirectional charging energy storage converter, the first circulating pump, the second circulating pump, the third circulating pump, the fourth circulating pump, the first unidirectional discharging energy storage converter, the second transformer, the second unidirectional discharging energy storage converter and the quick change-over switch respectively.
Preferably, a power generation output measuring instrument is arranged on a connecting line between the wind power synchronous generator and the first transformer as well as between the wind power synchronous generator and the contract power network.
The beneficial effects of the invention are as follows:
1. the invention adopts the capacity required by three kinds of power of charging, discharging and self-power consumption to be intensively placed in a group of electrolyte liquid storage tanks, thereby realizing the functions of capacity sharing and capacity caching and realizing seamless complementation of the capacities of charging, discharging and self-power consumption;
2. the invention adopts independent configuration of the charging system, the discharging system, the power pile of the self-powered system and the circulating system, realizes parallel charging and discharging, and improves the stability and continuity of discharging;
3. the self-powered electricity supply adopts the power supply of the unique electric pile, so that the dependence on external self-powered electricity is reduced;
4. the invention has good expansion performance, can be expanded to different new energy application scenes, can be quickly transplanted no matter wind power, photovoltaic and the like, is suitable for the configuration of various power and capacity, and is more suitable for the popularization of markets.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
reference numerals: 1. a wind power generation device; 2. a wind power synchronous generator; 3. a power generation output measuring instrument; 4. a first transformer; 5. a unidirectional charging energy storage converter; 6. an anode electrolyte storage tank; 7. a first galvanic pile group; 8. a negative electrode electrolyte reservoir; 9. a first circulation pump; 10. a second circulation pump; 11. a second galvanic pile group; 12. a third circulation pump; 13. a fourth circulation pump; 14. the first unidirectional discharge energy storage converter; 15. a second transformer; 16. the second unidirectional discharge energy storage converter; 17. a fast change-over switch.
Detailed Description
In order that the manner in which the above recited features, objects and advantages of the present invention are obtained, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the invention.
Specific embodiments of the present invention are described below with reference to the accompanying drawings.
As shown in fig. 1, the concurrent charge-discharge capacity all-vanadium liquid flow energy storage system comprises a 2.3MW wind synchronous generator 2, a charging system, a discharging system, a self-power system, a positive electrolyte liquid storage tank 6, a negative electrolyte liquid storage tank 8 and a battery management system, wherein one end of the wind synchronous generator 2 is electrically connected with a wind power generation device 1, the other end of the wind synchronous generator is electrically connected with a 6kV and 2MW contract power network, the positive electrolyte liquid storage tank 6 and the negative electrolyte liquid storage tank 8 store the concurrent electrolyte of each subsystem, and the charging and discharging are processes of electrolyzing and reducing the electrolyte in the two liquid storage tanks.
The charging system comprises a 125kW first transformer 4, a 125kW unidirectional charging energy storage converter 5, a 125kW first electric pile group 7, a first circulating pump 9 and a second circulating pump 10, wherein the input end of the first transformer 4 is electrically connected with a wind-driven synchronous generator 2, a power generation output measuring instrument 3 is arranged in the middle of a circuit, the surplus electric energy required by a power grid can be stored in the system in real time, the output end of the first transformer 4 is electrically connected with the input end of the unidirectional charging energy storage converter 5, the output end of the unidirectional charging energy storage converter 5 is electrically connected with a wiring end of the first electric pile group 7, the positive electrode liquid outlet of the first electric pile group 7 is connected with one liquid inlet of an anode electrolyte liquid storage tank 6 through a liquid flow pipe, one liquid outlet of the anode electrolyte liquid storage tank 6 is connected with the liquid inlet of the first circulating pump 9 through a liquid flow pipe, the liquid outlet of the first circulating pump 9 is connected with the positive electrode liquid inlet of the first pile group 7 through a liquid flow pipe, the negative electrode liquid outlet of the first circulating pump 7 is connected with the liquid outlet of the second circulating liquid storage tank 10 through a liquid flow pipe, and the negative electrode liquid outlet of the first circulating pump 10 is connected with the liquid inlet of the first liquid storage tank 7 through a liquid outlet of the liquid flow pipe;
the discharging system comprises a second electric pile group 11, a third circulating pump 12, a fourth circulating pump 13, a first unidirectional discharging energy storage converter 14 with the power of 25kW and a second transformer 15 with the power of 25kW, wherein a wiring end of the second electric pile group 11 is electrically connected with an input end of the first unidirectional discharging energy storage converter 14, an output end of the first unidirectional discharging energy storage converter 14 is electrically connected with an input end of the second transformer 15, and an output end of the second transformer 15 is externally connected with an electricity selling system network to provide stable and long-term energy storage system power for the electricity selling network. The positive electrode liquid outlet of the second galvanic pile group 11 is connected with the other liquid inlet of the positive electrode electrolyte liquid storage tank 6 through a liquid flow pipe, the liquid outlet of the other positive electrode electrolyte liquid storage tank 6 is connected with the liquid inlet of the third circulating pump 12 through a liquid flow pipe, the liquid outlet of the third circulating pump 12 is connected with the positive electrode liquid inlet of the second galvanic pile group 11 through a liquid flow pipe, the negative electrode liquid outlet of the second galvanic pile group 11 is connected with the other liquid inlet of the negative electrode electrolyte liquid storage tank 8 through a liquid flow pipe, the other liquid outlet of the negative electrode electrolyte liquid storage tank 8 is connected with the liquid inlet of the fourth circulating pump 13 through a liquid flow pipe, and the liquid outlet of the fourth circulating pump 13 is connected with the negative electrode liquid inlet of the second galvanic pile group 11 through a liquid flow pipe;
the self-powered system comprises a 32kW second unidirectional discharge energy storage converter 16 and a quick change-over switch 17, wherein the input end of the second unidirectional discharge energy storage converter 16 is electrically connected with the wiring end of the second electric pile group 11, the output end of the second unidirectional discharge energy storage converter 16 is respectively electrically connected with an off-grid load electrical device and a driving contact of the quick change-over switch 17, a driven contact of the quick change-over switch 17 is externally connected with an electricity selling system network, and a handle end of the quick change-over switch 17 is electrically connected with a device of the self-powered system; when the electrolyte is activated, the quick change switch 17 can be switched to a driven contact to take electricity from different power grids or power generation systems, and after the activation is completed, the quick change switch 17 is switched to a driving contact to take electricity from a discharging system.
The battery management system is electrically connected with the first transformer 4, the unidirectional charge energy storage converter 5, the first circulating pump 9, the second circulating pump 10, the third circulating pump 12, the fourth circulating pump 13, the first unidirectional discharge energy storage converter 14, the second transformer 15, the second unidirectional discharge energy storage converter 16 and the fast change-over switch 17 respectively.
The operation process of the invention comprises the following steps:
when the electric quantity of the external wind power generation device 1 or any other power generation system is remained, a first circulating pump 9 and a second circulating pump 10 are started through a battery management system, positive electrolyte in a charging system circulates between a positive electrolyte liquid storage tank 6 and a first electric pile group 7, negative electrolyte circulates between a negative electrolyte liquid storage tank 8 and the first electric pile group 7, the charging system starts to work, and external electricity is stored in the first electric pile group 7 through a first transformer 4 and a unidirectional charging energy storage converter 5, so that the electric quantity is stored;
when electricity is needed to be used in the electricity selling network, a third circulating pump 12 and a fourth circulating pump 13 are started through a battery management system, positive electrolyte in a discharging system circulates between a positive electrolyte liquid storage tank 6 and a second electric pile group 11, negative electrolyte circulates between a negative electrolyte liquid storage tank 8 and the second electric pile group 11, the discharging system starts to work, and electric quantity in the second electric pile group 11 flows to the electricity selling system network through a first unidirectional discharge energy storage converter 14 and a second transformer 15 to supply power to the electricity selling system network;
when the system needs to be charged and needs to be supplied with power, the battery management system simultaneously starts the first circulating pump 9, the second circulating pump 10, the third circulating pump 12 and the fourth circulating pump 13, and can keep receiving the electric energy supplement of new energy sources while discharging, so that charging and discharging parallelism and electrolyte sharing are realized, and the persistence and stability of the electric power of a discharging interface are ensured.
When the system needs self-power consumption, the handle of the quick change-over switch 17 is switched to the active contact and is communicated with the discharging system, and the electric quantity in the discharging system flows to the quick change-over switch 17 through the second unidirectional discharging energy storage converter 16 and finally flows to the self-power consumption device to supply power to the self-power consumption device; when the electric quantity in the discharging system is insufficient, the handle of the quick change-over switch 17 is switched to the driven contact, and the self-powered device of the system obtains power supply through an external power grid.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. The parallel charging and discharging type common-capacity all-vanadium liquid flow energy storage system is characterized by comprising a wind synchronous generator (2), a charging system, a discharging system, a self-power system, an anode electrolyte liquid storage tank (6), a cathode electrolyte liquid storage tank (8) and a battery management system, wherein one end of the wind synchronous generator (2) is electrically connected with a wind power generation device (1), the other end of the wind synchronous generator is electrically connected with a contract power network, the anode electrolyte liquid storage tank (6) is internally stored with anode electrolyte, and the cathode electrolyte liquid storage tank (8) is internally stored with cathode electrolyte;
the charging system comprises a first transformer (4), a unidirectional charging energy storage converter (5), a first electric pile group (7), a first circulating pump (9) and a second circulating pump (10), wherein the input end of the first transformer (4) is electrically connected with a wind-driven synchronous generator (2), the output end of the first transformer (4) is electrically connected with the input end of the unidirectional charging energy storage converter (5), the output end of the unidirectional charging energy storage converter (5) is electrically connected with a wiring end of the first electric pile group (7), the positive electrode liquid outlet of the first electric pile group (7) is connected with one liquid inlet of a positive electrode electrolyte liquid storage tank (6) through a liquid flow pipe, one liquid outlet of the positive electrode electrolyte liquid storage tank (6) is connected with the liquid inlet of the first circulating pump (9) through the liquid flow pipe, the liquid outlet of the first circulating pump (9) is connected with the positive electrode liquid inlet of the first electric pile group (7) through the liquid flow pipe, and the negative electrode liquid outlet of the first electric pile group (7) is connected with the liquid inlet of the second electric pile group (8) through the liquid flow pipe, and the liquid outlet of the negative electrode of the first circulating pump (8) is connected with the liquid inlet of the liquid outlet of the first circulating pump (10);
the discharging system comprises a second electric pile group (11), a third circulating pump (12), a fourth circulating pump (13), a first unidirectional discharge energy storage converter (14) and a second transformer (15), wherein the wiring end of the second electric pile group (11) is electrically connected with the input end of the first unidirectional discharge energy storage converter (14), the output end of the first unidirectional discharge energy storage converter (14) is electrically connected with the input end of the second transformer (15), the output end of the second transformer (15) is externally connected with a power supply system network, the positive electrode liquid outlet of the second electric pile group (11) is connected with the other liquid inlet of the positive electrode electrolyte liquid storage tank (6) through a liquid flow pipe, the liquid outlet of the other liquid storage tank (6) is connected with the liquid inlet of the third circulating pump (12) through the liquid flow pipe, the liquid outlet of the third circulating pump (12) is connected with the positive electrode liquid inlet of the second electric pile group (11) through the liquid flow pipe, the positive electrode liquid outlet of the second electric pile group (11) is connected with the other liquid inlet of the negative electrode electrolyte liquid storage tank (8) through the liquid flow pipe, and the liquid outlet of the negative electrode liquid outlet of the fourth circulating pump (8) is connected with the other liquid inlet of the fourth electrolyte liquid storage tank (6) through the liquid flow pipe;
the self-powered system comprises a second unidirectional discharge energy storage converter (16) and a quick change-over switch (17), wherein the input end of the second unidirectional discharge energy storage converter (16) is electrically connected with the wiring end of the second electric pile group (11), the output end of the second unidirectional discharge energy storage converter (16) is respectively electrically connected with an off-grid load electric appliance device and the driving contact of the quick change-over switch (17), the driven contact of the quick change-over switch (17) is externally connected with an electricity selling system network, and the handle end of the quick change-over switch (17) is electrically connected with the device of the self-powered system;
the battery management system is electrically connected with the first transformer (4), the unidirectional charging energy storage converter (5), the first circulating pump (9), the second circulating pump (10), the third circulating pump (12), the fourth circulating pump (13), the first unidirectional discharging energy storage converter (14), the second transformer (15), the second unidirectional discharging energy storage converter (16) and the quick change-over switch (17) respectively.
2. The parallel charge-discharge common-capacity vanadium redox flow energy storage system according to claim 1, wherein a power generation output measuring instrument (3) is arranged on a connecting line between the wind-driven synchronous generator (2) and the first transformer (4) and a contract power network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310708937.3A CN116646963A (en) | 2023-06-14 | 2023-06-14 | Concurrent charge-discharge common-capacity all-vanadium liquid flow energy storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310708937.3A CN116646963A (en) | 2023-06-14 | 2023-06-14 | Concurrent charge-discharge common-capacity all-vanadium liquid flow energy storage system |
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| Publication Number | Publication Date |
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| CN116646963A true CN116646963A (en) | 2023-08-25 |
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| CN202310708937.3A Pending CN116646963A (en) | 2023-06-14 | 2023-06-14 | Concurrent charge-discharge common-capacity all-vanadium liquid flow energy storage system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117276614A (en) * | 2023-09-21 | 2023-12-22 | 上海橙氧科技有限公司 | Energy storage system with hydrogen peroxide as electronic energy carrier |
-
2023
- 2023-06-14 CN CN202310708937.3A patent/CN116646963A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117276614A (en) * | 2023-09-21 | 2023-12-22 | 上海橙氧科技有限公司 | Energy storage system with hydrogen peroxide as electronic energy carrier |
| CN117276614B (en) * | 2023-09-21 | 2024-04-05 | 上海橙氧科技有限公司 | Energy storage system with hydrogen peroxide as electronic energy carrier |
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