CN202503302U - Wind power station energy storing device - Google Patents

Wind power station energy storing device Download PDF

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Publication number
CN202503302U
CN202503302U CN2012200827805U CN201220082780U CN202503302U CN 202503302 U CN202503302 U CN 202503302U CN 2012200827805 U CN2012200827805 U CN 2012200827805U CN 201220082780 U CN201220082780 U CN 201220082780U CN 202503302 U CN202503302 U CN 202503302U
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CN
China
Prior art keywords
energy
direct current
storage
battery
super capacitor
Prior art date
Application number
CN2012200827805U
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Chinese (zh)
Inventor
李磊
苏丽营
辛理夫
刘志
李杨
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华锐风电科技(集团)股份有限公司
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Priority to CN2012200827805U priority Critical patent/CN202503302U/en
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Publication of CN202503302U publication Critical patent/CN202503302U/en

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/76Power conversion electric or electronic aspects
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30Systems combining energy storage with energy generation of non-fossil origin

Abstract

The utility model provides a wind power station energy storing device which comprises a battery energy storing device. The battery energy storing device comprises a plurality of battery energy storing units arranged in parallel. Each battery energy storing unit comprises a first transformer, a first AC/DC converter and a battery, wherein the first transformer, the first AC/DC converter and the battery are sequentially connected in series. The energy storing device further comprises a supercapacitor energy storing device. The supercapacitor energy storing device comprises a plurality of supercapacitor energy storing units arranged in parallel. Each supercapacitor energy storing unit comprises a second transformer, a second AC/DC converter and a supercapacitor, wherein the second transformer, the second AC/DC converter and the supercapacitor are sequentially connected in series. Each battery energy storing unit and each supercapacitor energy storing unit are connected in parallel. The adoption of the above embodiment can not only make full use of an advantage of high energy density of the battery, but also utilize the supercapacitor energy storing device connected in parallel to make up for inadequacies of the battery energy storing device, thereby enabling the wind power station energy storing device to adapt to frequent charging and discharging, improving service life of the battery, and meeting a requirement of stabilizing power fluctuations of a wind power station.

Description

The wind energy turbine set energy storage device
Technical field
The utility model relates to the wind energy turbine set energy storage technology, relates in particular to a kind of wind energy turbine set energy storage device.
Background technology
Along with the exhaustion day by day of fossil class A fuel A reserves and the aggravation of environmental pollution pressure, wind energy, the clean energy resource that this is inexhaustible, nexhaustible more and more receives the attention of various countries, has become the important source that various countries solve the energy shortage problem.
But,, be difficult to guarantee the harmony and the continuity of its power supply because wind energy exists randomness and intermittent defective.Therefore; Need energy storage device be installed in wind energy turbine set; Be equivalent in wind energy turbine set, build the energy-accumulating power station and the wind energy turbine set cooperation of suitable capacity like this; Through energy storage technology wind-powered electricity generation is carried out " peak load shifting ", improve the power supply quality of fail safe, stability, economy and the electrical network of operation of power networks.
At present, the energy storage device that wind energy turbine set is installed is mainly the batteries to store energy device, and it mainly utilizes the big advantage of storage battery energy density; But because the restriction of storage battery self charging and discharging currents, its power density that discharges and recharges is lower; And battery cycle life is short, is not suitable for frequently to discharge and recharge.And can carry out frequent discharging and recharging to storage battery with uncertain for the intermittence of stabilizing wind power, and this just has a strong impact on the capacity of storage battery, reduces its useful life, and in addition, because the storage battery power density is lower, then its power that can stabilize is also lower.
The utility model content
The utility model provides a kind of wind energy turbine set energy storage device, discharges and recharges in order to the batteries to store energy device that solves existing wind energy turbine set that power density is low, useful life short and stabilize the lower problem of wind power.
A kind of wind energy turbine set energy storage device that the utility model provides; Comprise the batteries to store energy device; Said batteries to store energy device comprises the batteries to store energy unit that a plurality of parallel connections are provided with; Each said batteries to store energy unit comprises first transformer in sequential series, first alternating current-direct current converter and the storage battery; Said energy storage device also comprises super capacitor energy storage device; Said super capacitor energy storage device comprises the super capacitor energy-storage unit that a plurality of parallel connections are provided with, and each said super capacitor energy-storage unit comprises second transformer in sequential series, second alternating current-direct current converter and the super capacitor, and each said batteries to store energy unit is all parallelly connected with each said super capacitor energy-storage unit.
Aforesaid wind energy turbine set energy storage device, wherein, the former limit of each said first transformer is electrically connected with the former limit of each said second transformer mutually.
Aforesaid wind energy turbine set energy storage device; Wherein, In each batteries to store energy unit, the alternating current terminal of the said first alternating current-direct current converter is electrically connected with the inferior limit of said first transformer, and the direct current terminal of the said first alternating current-direct current converter is electrically connected with said storage battery; In each super capacitor energy-storage unit, the alternating current terminal of the said second alternating current-direct current converter is electrically connected with the inferior limit of said second transformer, and the direct current terminal of the said second alternating current-direct current converter is electrically connected with said super capacitor.
Aforesaid wind energy turbine set energy storage device, wherein, each said first alternating current-direct current converter is electrically connected a said storage battery at least, and each said storage battery only is electrically connected with said first an alternating current-direct current converter.
Aforesaid wind energy turbine set energy storage device, wherein, each said second alternating current-direct current converter is electrically connected a said super capacitor at least, and each said super capacitor only is electrically connected with said second an alternating current-direct current converter.
Aforesaid wind energy turbine set energy storage device, wherein, said storage battery is any one or the arbitrarily two or more combination in lead-acid battery, ickel-cadmium cell, Ni-H cell, lithium battery, sodium-sulphur battery and the flow battery.
The wind energy turbine set energy storage device of the utility model comprises the super capacitor energy-storage unit parallelly connected with the batteries to store energy unit, the super capacitor in the super capacitor energy-storage unit have power density big, have extended cycle life, safeguard simple and be applicable to and need the occasion that frequently discharge and recharge fast.Therefore; Adopt such scheme can make full use of the big advantage of storage battery energy density; Can utilize parallelly connected super capacitor energy-storage unit to remedy the deficiency of batteries to store energy unit again; Make this wind energy turbine set energy storage device adapt to frequent discharging and recharging, the useful life of effectively having improved storage battery, and can satisfy the requirement that wind energy turbine set is stabilized power fluctuation.
Description of drawings
Fig. 1 is the structural representation of the utility model wind energy turbine set energy storage device embodiment.
Embodiment
Fig. 1 is the structural representation of the utility model wind energy turbine set energy storage device embodiment; As shown in Figure 1; The embodiment of the utility model wind energy turbine set energy storage device; This wind energy turbine set energy storage device comprises the batteries to store energy device, and the batteries to store energy device comprises the batteries to store energy unit that a plurality of parallel connection is provided with, and each batteries to store energy unit comprises first transformer 1 in sequential series, the first alternating current-direct current converter 2 and storage battery 3; This energy storage device also comprises super capacitor energy storage device; Super capacitor energy storage device comprises the super capacitor energy-storage unit that a plurality of parallel connection is provided with, and each super capacitor energy-storage unit comprises second transformer 4 in sequential series, the second alternating current-direct current converter 5 and super capacitor 6, and each batteries to store energy unit is all parallelly connected with each super capacitor energy-storage unit.
The wind energy turbine set energy storage device of such scheme has the super capacitor energy-storage unit parallelly connected with the batteries to store energy unit, the super capacitor 6 in the super capacitor energy-storage unit have power density big, have extended cycle life, safeguard simple and be applicable to and need the occasion that frequently discharge and recharge fast.Therefore; Adopt such scheme can make full use of the big advantage of storage battery 3 energy densities; Can utilize parallelly connected super capacitor energy-storage unit to remedy the deficiency of batteries to store energy unit again; Make this wind energy turbine set energy storage device adapt to frequent discharging and recharging, effectively improved the useful life of storage battery 3, and can satisfy the requirement that wind energy turbine set is stabilized power fluctuation.
Particularly; Based on the foregoing description; Batteries to store energy unit and super capacitor energy-storage unit be electrically connected each other between the former limit of former limit and each second transformer 4 through each first transformer 1 fetch carry out parallelly connected; Just, the former limit of the former limit of each first transformer 1 and all second transformers 4 all is electrically connected.
Further; Because what storage battery 3 and super capacitor 6 were stored all is direct currents; And in the electrical network and the electricity that sends of wind-driven generator be alternating current; For storage battery 3 and super capacitor 6 can be discharged and recharged normally, then, what between each first transformer 1 and corresponding storage battery 3, be electrically connected is used for the first alternating current-direct current converter 2 that alternating current-direct current transforms each other; And the alternating current terminal AC of the first alternating current-direct current converter 2 is electrically connected with the inferior limit of the first corresponding transformer 1, and the direct current terminal DC of the first alternating current-direct current converter 2 is electrically connected with storage battery 3.When storage battery 3 charges; The first alternating current-direct current converter 2 is converted into direct current so that storage battery 3 is charged with the alternating current in the electrical network; And when storage battery 3 discharged, the first alternating current-direct current converter 2 was converted into alternating current with the direct current of storage in the storage battery 3 and offers electrical network.Between each second transformer 4 and corresponding super capacitor 6, be electrically connected and be used for the second alternating current-direct current converter 5 that alterating and direct current transforms each other; And the alternating current terminal AC of the second alternating current-direct current converter 5 is electrically connected with the inferior limit of the second corresponding transformer 4; The direct current terminal DC of the second alternating current-direct current converter 5 is electrically connected with super capacitor 6; When super capacitor 6 charges; The second alternating current-direct current converter 5 is converted into direct current so that super capacitor 6 is charged with the alternating current in the electrical network, and when super capacitor 6 discharged, the second alternating current-direct current converter 5 was converted into alternating current with the direct current of storage in the super capacitor 6 and offers electrical network.
Further; Needs according to the reality use; The direct current terminal DC of each first alternating current-direct current converter 2 can be electrically connected more than one storage battery 3; And each storage battery 3 only is electrically connected with the direct current terminal DC of one first alternating current-direct current converter 2, and the direct current terminal DC of each second alternating current-direct current converter can be electrically connected more than one super capacitor 6, and each super capacitor 6 only is electrically connected with the direct current terminal DC of one second alternating current-direct current converter 5.
When the direct current terminal DC of one first alterating and direct current converter 2 connected a plurality of storage battery 3, can connect between the storage battery 3 also can parallel connection.When the direct current terminal DC of one second alterating and direct current converter 5 connected a plurality of super capacitor 6, each super capacitor 6 was parallel with one another.
Storage battery 3 in the utility model scheme can be any one or the arbitrarily two or more combination in lead-acid battery, ickel-cadmium cell, Ni-H cell, lithium battery, sodium-sulphur battery and the flow battery.Here two or more combinations can be the two or more storage battery 3 of direct current terminal DC electrical connection of the same first alterating and direct current converter 2 arbitrarily; The direct current terminal DC that also can be one first alterating and direct current converter 2 is electrically connected a kind of storage battery 3, and the direct current terminal DC of the first other alterating and direct current converter 2 is electrically connected other a kind of storage battery 3.
The wind energy turbine set energy storage device of the utility model adopts the mode of storage battery 3 and super capacitor 6 hybrid energy-storings to realize " peak load shifting " to wind energy turbine set; Be the peak period of wind-driven generator in generating; Part electrical power storage realizes " peak clipping " in storage battery 3 and super capacitor 6, and at the low peak period of wind turbine power generation; The electric energy that stores in storage battery 3 and the super capacitor 6 feeds back to electrical network, realizes " filling out paddy ".Come wind energy turbine set is carried out " peak load shifting " through this wind energy turbine set energy storage device, improved the utilance of generating equipment, thereby improved the electrical network overall operation efficiency; This wind energy turbine set energy storage device can also be as emergency standby power, when wind-driven generator does not generate electricity, can realize the quick control to electrical network rapidly for electrical network drops into electric energy, has improved the static state and the dynamic characteristic of electrical network, has improved the reliability of power supply.Also have,, therefore can suppress the unusual of voltage, improve the quality of power supply owing to have super capacitor 6.
What should explain at last is: above each embodiment is only in order to the technical scheme of explanation the utility model, but not to its restriction; Although the utility model has been carried out detailed explanation with reference to aforementioned each embodiment; Those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, or to wherein part or all technical characteristic are equal to replacement; And these are revised or replacement, do not make the scope of each embodiment technical scheme of essence disengaging the utility model of relevant art scheme.

Claims (6)

1. wind energy turbine set energy storage device; Comprise the batteries to store energy device; Said batteries to store energy device comprises the batteries to store energy unit that a plurality of parallel connections are provided with, and each said batteries to store energy unit comprises first transformer in sequential series, first alternating current-direct current converter and the storage battery, it is characterized in that; Said energy storage device also comprises super capacitor energy storage device; Said super capacitor energy storage device comprises the super capacitor energy-storage unit that a plurality of parallel connections are provided with, and each said super capacitor energy-storage unit comprises second transformer in sequential series, second alternating current-direct current converter and the super capacitor, and each said batteries to store energy unit is all parallelly connected with each said super capacitor energy-storage unit.
2. wind energy turbine set energy storage device according to claim 1 is characterized in that, the former limit of each said first transformer is electrically connected with the former limit of each said second transformer mutually.
3. wind energy turbine set energy storage device according to claim 1; It is characterized in that; In each batteries to store energy unit; The alternating current terminal of the said first alternating current-direct current converter is electrically connected with the inferior limit of said first transformer, and the direct current terminal of the said first alternating current-direct current converter is electrically connected with said storage battery; In each super capacitor energy-storage unit, the alternating current terminal of the said second alternating current-direct current converter is electrically connected with the inferior limit of said second transformer, and the direct current terminal of the said second alternating current-direct current converter is electrically connected with said super capacitor.
4. wind energy turbine set energy storage device according to claim 1 is characterized in that, each said first alternating current-direct current converter is electrically connected a said storage battery at least, and each said storage battery only is electrically connected with said first an alternating current-direct current converter.
5. wind energy turbine set energy storage device according to claim 1 is characterized in that, each said second alternating current-direct current converter is electrically connected a said super capacitor at least, and each said super capacitor only is electrically connected with said second an alternating current-direct current converter.
6. according to the arbitrary described wind energy turbine set energy storage device of claim 1-5, it is characterized in that said storage battery is any one or the arbitrarily two or more combination in lead-acid battery, ickel-cadmium cell, Ni-H cell, lithium battery, sodium-sulphur battery and the flow battery.
CN2012200827805U 2012-03-07 2012-03-07 Wind power station energy storing device CN202503302U (en)

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CN2012200827805U CN202503302U (en) 2012-03-07 2012-03-07 Wind power station energy storing device

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CN2012200827805U CN202503302U (en) 2012-03-07 2012-03-07 Wind power station energy storing device

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103219899A (en) * 2013-04-09 2013-07-24 许继集团有限公司 Hybrid energy storage converter device and operation control method thereof
CN104917198A (en) * 2015-06-08 2015-09-16 南车青岛四方机车车辆股份有限公司 Energy storage system control device and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103219899A (en) * 2013-04-09 2013-07-24 许继集团有限公司 Hybrid energy storage converter device and operation control method thereof
CN103219899B (en) * 2013-04-09 2017-12-05 许继集团有限公司 A kind of mixed type energy storage converter device and its progress control method
CN104917198A (en) * 2015-06-08 2015-09-16 南车青岛四方机车车辆股份有限公司 Energy storage system control device and method

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