CN204886202U - Wind -powered electricity generation energy storage system - Google Patents
Wind -powered electricity generation energy storage system Download PDFInfo
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- CN204886202U CN204886202U CN201520665251.1U CN201520665251U CN204886202U CN 204886202 U CN204886202 U CN 204886202U CN 201520665251 U CN201520665251 U CN 201520665251U CN 204886202 U CN204886202 U CN 204886202U
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- 238000004146 energy storage Methods 0.000 title claims abstract description 76
- 230000005611 electricity Effects 0.000 title claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 40
- 238000006243 chemical reaction Methods 0.000 claims abstract description 24
- 238000012546 transfer Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- 230000005684 electric field Effects 0.000 description 18
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 239000002699 waste material Substances 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 utility model discloses a wind -powered electricity generation energy storage system. Wherein, this system includes: the transmission cable of being connected with submarine cable for the transmission electric energy, the power conversion device, with transmission cable junction for carry out power converting to the received electric energy, energy memory, with the power conversion device is connected for the electric energy of storage behind power converting. The utility model provides a because the land electric power system's that causes greatly of the output -power fluctuation of marine wind power system the technical problem that electric energy stability is relatively poor and low pressure is passed through.
Description
Technical field
The utility model relates to marine wind electric field field, in particular to a kind of wind-powered electricity generation energy-storage system.
Background technology
Marine wind electric field is far away owing to taking off, usually by high-voltage direct current or flexible direct current system are connected with land electric power system back-to-back, as shown in Figure 1, between two current transformers (rectifier and inverter) of high-voltage direct current, usually connect through direct current submarine cable.The marine wind electric field that partial distance is nearer, also can not adopt high-voltage direct current, is directly connected with land electric power system, as shown in Figure 2.
But, because wind speed change is fast, therefore also the moment has greatly changed marine wind electric field power output, as shown in Figure 3, this causes the voltage of the ac bus 2# in Fig. 1 and Fig. 2 constantly to have greatly changed, and have impact on the quality of power supply and the safe and stable operation of land electric power system.
For above-mentioned problem, at present effective solution is not yet proposed.
Utility model content
The utility model embodiment provides a kind of wind-powered electricity generation energy-storage system, at least to solve because offshore wind farm system output power fluctuates the technical problem of the poor and low-voltage crossing of the stable electric power of the land electric power system caused greatly.
According to an aspect of the utility model embodiment, provide a kind of wind-powered electricity generation energy-storage system, comprising: the transmission cable be connected with submarine cable, for electric energy transmitting; Power conversion unit, is connected with described transmission cable, for carrying out power transfer to the electric energy received; Energy storage device, is connected with described power conversion unit, for storing the electric energy after power transfer.
Further, described power conversion unit is DC converter; Described DC converter is used for the direct current energy with the first voltage from described transmission cable to be converted to the direct current energy with the second voltage, or, the direct current energy with the second voltage from described energy storage device is converted to the direct current energy with the first voltage; Described energy storage device is also for receiving and having the direct current energy of the second voltage described in storing; Described transmission cable is also for having the direct current energy of the first voltage described in receiving.
Further, described first voltage is higher than described second voltage, and described transmission cable is direct current cables.
Further, described power conversion unit is inverter; Wherein, described inverter is used for the AC energy with tertiary voltage from described transmission cable to be converted to the direct current energy with the 4th voltage, or, the direct current energy with the 4th voltage from described energy storage device is converted to the AC energy with tertiary voltage; Described energy storage device is also for receiving and having the direct current energy of the 4th voltage described in storing; Described transmission cable is also for having the AC energy of tertiary voltage described in receiving.
Further, described tertiary voltage is higher than described 4th voltage, and described transmission cable is ac cable.
Further, described system also comprises: for carrying the bogey of described power conversion unit and energy storage device.
Further, described bogey is ship.
Further, described energy storage device comprises the combination of one or more energy-storage travelling wave tubes following: turbine, lead-acid battery, liquid state batteries and compressed-air energy-storage system.
In the utility model embodiment, adopt the transmission cable arranging and be connected with submarine cable, the power conversion unit be connected with transmission cable and the mode of energy storage device be connected with power conversion unit, by energy storage device storage of electrical energy, regulate when at sea Power Output for Wind Power Field changes, reach the object that land wind power system receives comparatively stable electric energy, thus achieve and strengthen the stable electric power of land electric power system and the technique effect of fail safe, and then solve because offshore wind farm system output power fluctuates the technical problem of the poor and low-voltage crossing of the stable electric power of the land electric power system caused greatly.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic diagram be connected with land electric power system according to a kind of marine wind electric field of prior art;
Fig. 2 is the schematic diagram be connected with land electric power system according to the another kind of marine wind electric field of prior art;
Fig. 3 is the time dependent schematic diagram of marine wind electric field power output according to prior art;
Fig. 4 is according to the structural representation of a kind of optional wind-powered electricity generation energy-storage system being the utility model embodiment;
Fig. 5 is according to the structural representation of the optional wind-powered electricity generation energy-storage system of the another kind being the utility model embodiment;
Fig. 6 is according to the structural representation of another optional wind-powered electricity generation energy-storage system being the utility model embodiment;
Fig. 7 is according to the structural representation of another optional wind-powered electricity generation energy-storage system being the utility model embodiment.
Embodiment
The utility model scheme is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the embodiment of the utility model part, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the utility model protection.
It should be noted that, term " first ", " second " etc. in specification of the present utility model and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as embodiment of the present utility model described herein can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
According to the utility model embodiment, provide a kind of embodiment of wind-powered electricity generation energy-storage system.Fig. 4 is the structural representation of the wind-powered electricity generation energy-storage system according to the utility model embodiment, and as shown in Figure 4, wind-powered electricity generation energy-storage system comprises following part: the transmission cable 402 be connected with submarine cable 408, power conversion unit 404 and energy storage device 406.
Wherein, the transmission cable 402 be connected with submarine cable 408, for electric energy transmitting; Power conversion unit 404, is connected with described transmission cable 402, for carrying out power transfer to the electric energy received; Energy storage device 406, is connected with described power conversion unit 404, for storing the electric energy after power transfer.
The wind-powered electricity generation energy-storage system of the utility model embodiment, adopt the transmission cable arranging and be connected with submarine cable, the power conversion unit be connected with transmission cable and the mode of energy storage device be connected with power conversion unit, by energy storage device storage of electrical energy, regulate when at sea Power Output for Wind Power Field changes, reach the object that land wind power system receives comparatively stable electric energy, thus achieve and strengthen the stable electric power of land electric power system and the technique effect of fail safe, and then solve because offshore wind farm system output power fluctuates the technical problem of the poor and low-voltage crossing of the stable electric power of the land electric power system caused greatly.
Alternatively, described power conversion unit is DC converter; Described DC converter is used for the direct current energy with the first voltage from described transmission cable to be converted to the direct current energy with the second voltage, or, the direct current energy with the second voltage from described energy storage device is converted to the direct current energy with the first voltage; Described energy storage device is also for receiving and having the direct current energy of the second voltage described in storing; Described transmission cable is also for having the direct current energy of the first voltage described in receiving.
Wherein, DC converter, also claims DC-to-DC (DC/DC) converter, is a kind of device fixing DC voltage conversion being become variable direct voltage.
Alternatively, described first voltage is higher than described second voltage, and described transmission cable is direct current cables.
In the utility model embodiment, the voltage of the electric energy that can store due to energy storage device is general lower, and the voltage of the electric energy that marine wind electric field sends is higher, therefore DC converter needs to carry out step-down and be transferred to energy storage device storing to the electric energy from marine wind electric field, such as, be that the electric energy of 1000V reduces to the electric energy that voltage is 100V by voltage, and the electric energy of energy storage device boosted and is transferred to land electric power system.
Alternatively, described power conversion unit is inverter; Wherein, described inverter is used for the AC energy with tertiary voltage from described transmission cable to be converted to the direct current energy with the 4th voltage, or, the direct current energy with the 4th voltage from described energy storage device is converted to the AC energy with tertiary voltage; Described energy storage device is also for receiving and having the direct current energy of the 4th voltage described in storing; Described transmission cable is also for having the AC energy of tertiary voltage described in receiving.
Wherein, inverter is device direct current energy being converted to AC energy.
Alternatively, described tertiary voltage is higher than described 4th voltage, and described transmission cable is ac cable.
In the utility model embodiment, the voltage of the electric energy that can store due to energy storage device is general lower and be direct current energy, and the voltage of the electric energy that marine wind electric field sends is higher and for AC energy, therefore inverter needs the AC energy from marine wind electric field is carried out to step-down and is converted to direct current energy, and then be transferred to energy storage device and store, and the direct current energy of energy storage device is boosted and is converted to AC energy and be transferred to land electric power system.
Alternatively, as shown in Figure 5, wind-powered electricity generation energy-storage system also comprises: for carrying the bogey 502 of described power conversion unit and energy storage device.
Alternatively, described bogey is ship.
The problem that the fluctuation of existing offshore wind farm system output power is large, the quality of power supply is low, affect land wind power system safe and stable operation can be solved by the utility model.In addition, the bogey in the utility model can utilize waste and old freighter as carrier, greatly saves construction cost, thus is convenient to promote and realize economic benefit.In addition, the bogey in the utility model also can be can load power converting means and energy storage device platform, and the utility model does not limit.
As shown in Figure 6, for being applicable to the wind-powered electricity generation energy-storage system of Fig. 1, bogey is that ship (also claiming energy storage ship) is for carrying DC converter and energy storage device, can swim on sea level, energy storage device is connected with DC converter, and DC converter is connected with the direct current submarine cable in high-voltage direct current by direct current cables, DC bus (direct current cables, DC bus can be referred to as transmission cable).After the AC energy that marine wind electric field sends is transferred to high-voltage direct current, a part is land power system power supply, a part arrives DC converter by transmission cable, DC converter is connected between rectifier and inverter, the AC energy that marine wind electric field transmission comes is converted into direct current energy by rectifier, DC converter carries out step-down (being such as reduced to 100V from 1000V) to the direct current energy received, and then the direct current energy after step-down is transferred to energy storage device.When marine wind electric field power output changes, for it compensates, (direct current energy boosts the direct current energy that wind-powered electricity generation energy-storage system can utilize energy storage device to store by DC converter, direct current submarine cable is transferred to via direct current cables, DC bus, the direct current energy received is converted to AC energy to land electrical power system transmission by inverter), and then improve the controllability of marine wind electric field power output, suppress wind power fluctuation, smooth output voltage, improves the quality of power supply.
As shown in Figure 7, for being applicable to the wind-powered electricity generation energy-storage system of Fig. 2, energy storage ship carrying inverter and energy storage device, can swim on sea level, energy storage device is connected with inverter, and inverter is connected with interchange submarine cable by ac cable (also can be described as transmission cable).After the AC energy that marine wind electric field sends is transferred to and exchanges submarine cable, a part is land power system power supply, a part arrives inverter by transmission cable, the AC energy received is converted to direct current energy and carries out step-down by inverter, and then the direct current energy obtained is transferred to energy storage device.When marine wind electric field power output changes, for it compensates, (direct current energy is converted to AC energy and boosts the direct current energy that wind-powered electricity generation energy-storage system can utilize energy storage device to store by inverter, interchange submarine cable is transferred to via ac cable, and then to land electrical power system transmission), and then improve the controllability of marine wind electric field power output, suppress wind power fluctuation, smooth output voltage, improve the quality of power supply.
Alternatively, described energy storage device comprises the combination of one or more energy-storage travelling wave tubes following: turbine, lead-acid battery, liquid state batteries and compressed-air energy-storage system.
The wind-powered electricity generation energy-storage system that the utility model proposes comprises the energy storage device, power conversion unit (DC converter or inverter), the transmission cable that are made up of energy-storage travelling wave tube, and bogey.Energy storage device can be the device that any energy-storage travelling wave tube is formed, as turbine, lead-acid battery, liquid state batteries, compressed-air energy-storage system etc., energy storage device also can be solid-state energy-accumulating medium, also can be liquid energy-accumulating medium, or the combination of multiple energy-accumulating medium.
In above-described embodiment of the present utility model, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
In several embodiments that the application provides, should be understood that, disclosed technology contents, the mode by other realizes.Wherein, device embodiment described above is only schematic, the such as division of described unit, can be that a kind of logic function divides, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of unit or module or communication connection can be electrical or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed on multiple unit.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the utility model can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that the technical solution of the utility model contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprises all or part of step of some instructions in order to make a computer equipment (can be personal computer, server or the network equipment etc.) perform method described in each embodiment of the utility model.And aforesaid storage medium comprises: USB flash disk, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), portable hard drive, magnetic disc or CD etc. various can be program code stored medium.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (8)
1. a wind-powered electricity generation energy-storage system, is characterized in that, comprising:
The transmission cable be connected with submarine cable, for electric energy transmitting;
Power conversion unit, is connected with described transmission cable, for carrying out power transfer to the electric energy received;
Energy storage device, is connected with described power conversion unit, for storing the electric energy after power transfer.
2. system according to claim 1, is characterized in that, described power conversion unit is DC converter;
Described DC converter is used for the direct current energy with the first voltage from described transmission cable to be converted to the direct current energy with the second voltage, or, the direct current energy with the second voltage from described energy storage device is converted to the direct current energy with the first voltage;
Described energy storage device is also for receiving and having the direct current energy of the second voltage described in storing;
Described transmission cable is also for having the direct current energy of the first voltage described in receiving.
3. system according to claim 2, is characterized in that, described first voltage is higher than described second voltage, and described transmission cable is direct current cables.
4. system according to claim 1, is characterized in that, described power conversion unit is inverter;
Wherein, described inverter is used for the AC energy with tertiary voltage from described transmission cable to be converted to the direct current energy with the 4th voltage, or, the direct current energy with the 4th voltage from described energy storage device is converted to the AC energy with tertiary voltage;
Described energy storage device is also for receiving and having the direct current energy of the 4th voltage described in storing;
Described transmission cable is also for having the AC energy of tertiary voltage described in receiving.
5. system according to claim 4, is characterized in that, described tertiary voltage is higher than described 4th voltage, and described transmission cable is ac cable.
6. system according to claim 1, is characterized in that, described system also comprises: for carrying the bogey of described power conversion unit and energy storage device.
7. system according to claim 6, is characterized in that, described bogey is ship.
8. system according to any one of claim 1 to 7, is characterized in that, described energy storage device comprises the combination of one or more energy-storage travelling wave tubes following:
Turbine, lead-acid battery, liquid state batteries and compressed-air energy-storage system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520665251.1U CN204886202U (en) | 2015-08-28 | 2015-08-28 | Wind -powered electricity generation energy storage system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520665251.1U CN204886202U (en) | 2015-08-28 | 2015-08-28 | Wind -powered electricity generation energy storage system |
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| CN204886202U true CN204886202U (en) | 2015-12-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110611332A (en) * | 2019-11-08 | 2019-12-24 | 江苏科技大学 | Offshore wind power system energy storage device and control method thereof |
| CN112736977A (en) * | 2020-12-31 | 2021-04-30 | 中国长江三峡集团有限公司 | Multi-terminal offshore wind power flexible direct current and energy storage cooperative grid-connected system and control method thereof |
-
2015
- 2015-08-28 CN CN201520665251.1U patent/CN204886202U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110611332A (en) * | 2019-11-08 | 2019-12-24 | 江苏科技大学 | Offshore wind power system energy storage device and control method thereof |
| CN110611332B (en) * | 2019-11-08 | 2023-04-28 | 江苏科技大学 | Energy storage device of offshore wind power system and control method thereof |
| CN112736977A (en) * | 2020-12-31 | 2021-04-30 | 中国长江三峡集团有限公司 | Multi-terminal offshore wind power flexible direct current and energy storage cooperative grid-connected system and control method thereof |
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