CN103647354A - Wind power generation energy storage system - Google Patents
Wind power generation energy storage system Download PDFInfo
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- CN103647354A CN103647354A CN201310614558.4A CN201310614558A CN103647354A CN 103647354 A CN103647354 A CN 103647354A CN 201310614558 A CN201310614558 A CN 201310614558A CN 103647354 A CN103647354 A CN 103647354A
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- wind
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- direct current
- wind power
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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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- Control Of Eletrric Generators (AREA)
- Wind Motors (AREA)
Abstract
The invention provides a wind power generation energy storage system. The wind power generation energy storage system is composed of a wind power direct-current constant-voltage generator, super capacitor batteries, a direct-current voltage-increasing device, a single-phase high-voltage direct-current cable, a direct-current voltage-decreasing device and a water pumping energy storage power station consisting of a direct-current motor water pump and an alternating-current generator; power generated by the wind power direct-current constant-voltage generator is inputted to the super capacitor batteries so as to be buffered; the buffered power is connected into the single-phase high-voltage direct-current cable through the direct-current voltage-increasing device; the direct-current voltage-increasing device and the ground form a loop used for power transmission; and the power is connected into the direct-current voltage-decreasing device; and the power drives the direct-current motor water pump of the water pumping energy storage power station; and when the power is outputted, the alternating-current generator of the water pumping energy storage power station generates power. By means of the above manner, direct-current power generated by wind power can be transmitted remotely; an energy conversion process can be simplified; energy conversion rate can be greatly improved; and energy output can be stabilized. The wind power generation energy storage system is suitable for wind power generation at areas such as sea beaches, deserts and gobi deserts.
Description
Technical field
The present invention relates to a kind of system, especially the stocking system of wind power generation.
Background technology
Current wind-driven generator has two kinds: a kind of is parallel net type, and generating electricity out carries out directly inputting in electrical network after rectifying and voltage-stabilizing, and maximum permission capacity is 10% of electrical network load; Another kind is off-grid type, generally the electricity sending can be existed in storage battery and becomes chemical energy, and then when needs are exported, chemical energy becomes electric energy, and adjusts output by inverter, and this class is with stored energy buffering device.
Buffering accumulated energy technology is in wind power generation, and especially aobvious is important, and the variation of wind speed can make the mechanical output of prime mover output change, thereby makes output of a generator generation fluctuate and the quality of power supply is declined.Application stored energy buffering device is the effective way of improving generator output voltage and frequency quality.Buffering accumulated energy is the important component part of regenerative resource with the combination of large capacity wind generator system.By storage and the release of the electric energy to from regenerative resource, will make the cheap unsettled energy become the stable product with higher-value.In addition, network load has peak and low ebb characteristic, and the load of electric power system has peak to have paddy, with electric energy stocking system, regulates electric load necessary.Especially in wind power plant, because wind sometimes rises, sometimes stop, thus efficient, safety, the energy storage method that feasibility is high and device seem particularly important for wind power plant.
Different by the form of buffer storage energy, be applicable to wind generator system, have the buffering accumulated energy mode of application prospect to mainly contain several forms such as flow battery, lithium battery, ultracapacitor, superconduction, compressed-air energy storage.
By the energy storage device in wind generator system, can make this intermittence of wind-powered electricity generation, regenerative resource that fluctuation is very strong become " controlled, adjustable ", when wind-force is strong, except powering to loading by wind turbine generator, unnecessary wind energy is converted to other forms of energy and in stored energy buffering device, stores; A little less than wind-force or when calm, then the energy storing in stored energy buffering device is discharged and is converted to electric energy, to load power supply.Can predict, extensive energy-storage system will become fresh combatants indispensable in intelligent grid.
But the current cost of lead accumulator, flow battery, lithium battery system is high, and since its chemical cell attribute, longevity system; Compressed-air energy storage transformation efficiency is low, is subject to position influence; It is practical that the physical property such as ultracapacitor, superconduction energy storage device system is affected by technology or cost factor to be at present difficult to.
Summary of the invention
The invention provides a kind of buffer system, wind power generation is possessed stable, low-cost, improve its quality.
Technical scheme is as follows:
A kind of wind power generation stocking system, it is characterized in that by wind-force direct current constant voltage generator, super capacitance cell, DC booster, single-phase high voltage direct current cables, DC decompression device, the system that the hydroenergy storage station that comprises DC motor water pump and alternating current generator forms, the electricity input super capacitance cell buffering that wind-force direct current constant voltage generator sends, then through DC booster access single-phase high voltage direct current cables, form loop with the earth and carry out electric power conveying, access again DC decompression device, drive the DC motor water pump of hydroenergy storage station, alternating current generator by hydroenergy storage station during output generates electricity.
By wind energy, sending direct current like this can carry at a distance, and simplifies energy conversion process, increases substantially energy transformation ratio, stable energy output.
Embodiment
In concrete enforcement, there are a plurality of optimization detail schema:
1. the voltage of wind-force direct current constant voltage generator output can not exceed 60% of super capacitance cell rated voltage;
2. the battery capacity of super capacitance cell can store all wind-force direct current constant voltage generators specified energy output of 1 hour;
3. super capacitor electricity can carry out carrying out parallel connection after many group series connection, can meet so the withstand voltage problem of battery, and the rated voltage of super capacitance cell is arranged on 380～450V.
4. the circuit of many group wind turbine generator carries out unidirectional parallel connection, when wind-force direct current constant voltage generator current strength surpasses single-phase high voltage direct current cables load, single-phase high voltage direct current cables is directly directly supplied electric power by wind-force direct current constant voltage generator, and cuts off the output of super capacitance cell.
Adopt buffer system of the present invention, can improve the quality of wind power generation, have and network as main force's power supply, wind power generation carries out in the regions such as applicable seashore beach, desert, Gobi desert etc.
Claims (5)
1. a wind power generation stocking system, it is characterized in that by wind-force direct current constant voltage generator, super capacitance cell, DC booster, single-phase high voltage direct current cables, DC decompression device, the system that the hydroenergy storage station that comprises DC motor water pump and alternating current generator forms, the electricity input super capacitance cell buffering that wind-force direct current constant voltage generator sends, then through DC booster access single-phase high voltage direct current cables, form loop with the earth and carry out electric power conveying, access again DC decompression device, drive the DC motor water pump of hydroenergy storage station, alternating current generator by hydroenergy storage station during output generates electricity.
2. wind power generation stocking system as claimed in claim 1, is characterized in that the voltage of wind-force direct current constant voltage generator output can not exceed 60% of super capacitance cell rated voltage.
3. wind power generation stocking system as claimed in claim 1, is characterized in that the battery capacity of super capacitance cell can store all wind-force direct current constant voltage generators specified energy output of 1 hour.
4. wind power generation stocking system as claimed in claim 1, is characterized in that the rated voltage of super capacitance cell is arranged on 380～450V.
5. wind power generation stocking system as claimed in claim 1, the circuit that it is characterized in that many group wind turbine generator carries out unidirectional parallel connection, when wind-force direct current constant voltage generator current strength surpasses single-phase high voltage direct current cables load, single-phase high voltage direct current cables is directly directly supplied electric power by wind-force direct current constant voltage generator, and cuts off the output of super capacitance cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310614558.4A CN103647354A (en) | 2013-11-28 | 2013-11-28 | Wind power generation energy storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310614558.4A CN103647354A (en) | 2013-11-28 | 2013-11-28 | Wind power generation energy storage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103647354A true CN103647354A (en) | 2014-03-19 |
Family
ID=50252535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310614558.4A Pending CN103647354A (en) | 2013-11-28 | 2013-11-28 | Wind power generation energy storage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103647354A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202023700U (en) * | 2010-11-15 | 2011-11-02 | 杨贻方 | Wind power generation caching apparatus |
| US20120175949A1 (en) * | 2009-09-30 | 2012-07-12 | Henrik Stiesdal | System to store and to transmit electrical power |
| CN202659407U (en) * | 2012-07-07 | 2013-01-09 | 浙江永昌仪表有限公司 | Hybrid power generation device capable of using wind power and waterpower |
-
2013
- 2013-11-28 CN CN201310614558.4A patent/CN103647354A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120175949A1 (en) * | 2009-09-30 | 2012-07-12 | Henrik Stiesdal | System to store and to transmit electrical power |
| CN202023700U (en) * | 2010-11-15 | 2011-11-02 | 杨贻方 | Wind power generation caching apparatus |
| CN202659407U (en) * | 2012-07-07 | 2013-01-09 | 浙江永昌仪表有限公司 | Hybrid power generation device capable of using wind power and waterpower |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140319 |