CN202535090U - Wind power generation energy storage system - Google Patents
Wind power generation energy storage system Download PDFInfo
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- CN202535090U CN202535090U CN2012201855855U CN201220185585U CN202535090U CN 202535090 U CN202535090 U CN 202535090U CN 2012201855855 U CN2012201855855 U CN 2012201855855U CN 201220185585 U CN201220185585 U CN 201220185585U CN 202535090 U CN202535090 U CN 202535090U
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- transformer
- chopper
- wind
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- rectifier
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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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
Abstract
The utility model mainly relates to a wind power generation energy storage system which mainly comprises a wind generator, a filtering compensation device, a rectifier, an energy storage device, an inverter and a transformer. The wind generator is connected with the transformer, the transformer is connected with the rectifier through the filtering compensation device, the rectifier is connected with the inverter through the energy storage device (a storage battery and a super capacitor), the inverter is connected with the transformer through the filtering compensation device, and the transformer is connected with a power grid. Rest switches are respectively arranged between the wind generator and the transformer, and between the power grid and the transformer, and a chopper is further arranged between the rectifier and the inverter. The wind power generation energy storage system can improve the stability of the power grid. By means of the energy storage of wind power generation, after stable electric energy is obtained, then the stable electric energy can be sent to the power grid, and therefore, the stability of the electrical power system and the utilization rate of the power energy can be improved more effectively, and the wind power generation energy storage system is suitable for the popularization and application.
Description
Technical field
The utility model relates generally to a kind of wind power generation energy-storage system, particularly relates to a kind ofly to protector, filter, copped wave device, energy storage device improved wind power generation energy-storage system in addition, belongs to wind-powered electricity generation and utilizes technical field.
Background technology
Wind energy is a kind of regenerative resource of cleaning.China's wind resource is abundant, and wind-powered electricity generation possesses full-blown natural conditions in China.But wind energy has randomness, intermittent characteristics, schedulability, less stable, so wind energy turbine set is difficult to send stable electric energy.Wind power generation mainly comprises voltage deviation, voltage fluctuation, voltage flicker harmonic etc. to the influence of the quality of power supply.Exerting oneself of load in the electric power system and wind turbine generator all changing at any time, and wherein system's reactive power imbalance is the basic reason that causes the voltage deviation nominal value.Wind-powered electricity generation energy-storage system from traditional wind-powered electricity generation energy-storage system to today has had a development that leaps; But at aspects such as protector, filter, copped wave device, energy storage devices still is that some is circumscribed; For example the capacity of short circuit of the situation of the structure of converter device, filter and electrical network all can influence the degree of Harmonic Interference; The harmonic components that wherein contains is big more, also more easily control signal is caused interference, also more easily equipment is caused damage; For the fail safe, stability and the rate of energy that further improve the wind power generation energy-storage system, these problems still await solving.
Summary of the invention
Goal of the invention
In order to solve above-mentioned existing in prior technology problem; The utility model provides a kind of wind power generation energy-storage system; Can improve the stability of electrical network; Wind-powered electricity generation is carried out energy storage, obtain sending in the electrical network again behind the stable electric energy, thereby improve the stability of electric power system and the utilance of electric energy more effectively.
Technical scheme
A kind of wind power generation energy-storage system; It is characterized in that: mainly constitute by wind-driven generator, filtering compensation device, rectifier, energy storage device, inverter and transformer; Wind-driven generator connects transformer, and transformer connects rectifier through filtering compensation device, and rectifier connects inverter through energy storage device; Inverter connects transformer through filtering compensation device, and transformer connects electrical network; Energy storage device is storage battery and ultracapacitor; Be provided with rest switch between wind-driven generator and the transformer and between electrical network and the transformer, between rectifier and inverter, also be provided with chopper.
Said chopper comprises Buck chopper, Boost chopper and two-way Buck/Boost chopper, and rectifier connects the Buck chopper, and the Buck chopper connects the Boost chopper, and the Boost chopper connects inverter; Storage battery (lithium battery) and ultracapacitor all are connected in parallel between Buck chopper and the Boost chopper.
Said storage battery (lithium battery) is to be connected in parallel between Buck chopper and the Boost chopper through two-way Buck/Boost chopper.
Advantage and effect
The utility model provides a kind of wind power generation energy-storage system, have following advantage:
This wind power generation energy-storage system of the utility model; Through increasing rest switch; With appropriate design to filter, chopper and energy storage device; The stability that can more effectively improve energy-storage system with increase stored energy capacitance, thereby stable electric energy is provided and remedies the wind-powered electricity generation unit for electrical network directly to the deficiency of mains supply.
Description of drawings
Fig. 1 is traditional wind-powered electricity generation energy-storage system structural representation;
Fig. 2 is the utility model structural representation;
Fig. 3 is the utility model schematic diagram.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further explanation:
As shown in fig. 1, traditional wind power generation energy-storage system comprises several parts such as wind-driven generator, filtering compensation device, rectifier, storage battery, inverter, transformer substantially.Wind energy is delivered to rectifier through transformer through filtering compensation device with alternating current through wind-driven generator; Rectifier is transformed into direct current with alternating current; A part is sent into storage battery; A part is directly sent into inverter, and inverter is transformed into alternating current with direct current again and sends into electrical network through filtering compensation device through transformer, thereby has remedied the unsteadiness of wind-driven generator to the electrical network transmission of electric energy through this control system.
The utility model is that the filtering compensation device that in traditional wind power generation energy-storage system, adds rest switch, electric energy is got into and exports improves.Chopper at DC side improves; And the way of employing lithium battery and ultracapacitor associating energy storage; And adopt two-way Buck/Boost chopper to incorporate between Buck chopper and the Boost chopper separately to storage battery (lithium battery), however ultracapacitor directly incorporate between Buck chopper and the Boost chopper, thereby further increase the capacity of energy-storage system; Improve the stability of energy-storage system, improve rate of energy.
This wind power generation energy-storage system of the utility model; Its structural representation mainly is made up of wind-driven generator, filtering compensation device, rectifier, energy storage device, inverter and transformer as shown in Figure 2, and wind-driven generator connects transformer; Transformer connects rectifier through filtering compensation device; Rectifier is connected inverter through energy storage device (storage battery and ultracapacitor), and inverter connects transformer through filtering compensation device, and transformer connects electrical network; Be provided with rest switch between wind-driven generator and the transformer and between electrical network and the transformer, between rectifier and inverter, also be provided with chopper.
Said chopper comprises Buck chopper, Boost chopper and two-way Buck/Boost chopper, and rectifier connects the Buck chopper, and the Buck chopper connects the Boost chopper, and the Boost chopper connects inverter.Storage battery (lithium battery) and ultracapacitor are to be connected in parallel on respectively between Boost chopper and the Boost chopper, and storage battery (lithium battery) is connected in parallel between Buck chopper and the Boost chopper through two-way Buck/Boost chopper.
As shown in Figure 3, the utility model operation principle is following:
Wind-driven generator passes through rest switch 1, double winding step-down transformer TM2 with a part of AC energy; Through reactive power compensator thyristor-controlled reactor and filter entering rectifier alternating current is transformed into direct current; At parallelly connected respectively two one of the energy storage devices of DC side is that one of lithium battery is a ultracapacitor; Direct current drops to voltage the charging voltage that is fit to ultracapacitor through the Buck chopper; A part is directly carried out energy storage to ultracapacitor, and a part is carried out energy storage through two-way Buck/Boost chopper to lithium battery.During energy storage device (storage battery and ultracapacitor) discharge direct current is sent to inverter through the Boost chopper and is transformed into alternating current to direct current, alternating current is sent into electrical network through wave filter, double winding step-up transformer TM2, rest switch 2.
(1) rest switch is a kind of noncontacting switch; It is a kind of alternating-current switch of forming with two thyristor reverse parallel connections; A thyristor is used for through positive half cycle current, and the another thyristor then is used for through negative half-cycle current, and its closed and disconnected is controlled by logic controller.Its effect is to realize from one road automatic switchover to another road, and its advantage has phenomenons such as life-span length, reliable operation, noiseless, speed are fast, nothing spring.In energy-storage system, add rest switch, reduced and cut-off that circuit speed is slow to cause damage to energy-storage system equipment with acting frequently.
(2) reactive power compensator is made up of thyristor-controlled reactor and filter.Ground connection after thyristor-controlled reactor is connected with antiparallel thyristor by reactor L1, its effect has increased electric power system power delivery ability, reduces the circuit energy loss, improves power factor; Filter is composed in series ground connection by capacitor C 1 and inductance L 2, makes the impedance of compensation circuit with respect to inductive load, be perception at certain subharmonic, thereby eliminates owing to circuit is the harmonic wave concussion that capacitive is brought.In order to eliminating transformer and thyristor high order harmonic component with cut-off the overvoltage that rest switch produces, thereby eliminate inductive interference that communication line is caused and general device worked the mischief.Finally reach perceptual idle and coordinate each other to make system more stable with capacitive reactive power, shunt capacitance does not well address these problems yet tradition is installed just herein.
(3) rectifier adopts parallel IGBT thyristor three-phase bridge rectifier circuit.
(4) the Buck chopper is made up of IGBT thyristor, diode and inductance L 3, mainly is to carry out step-down to direct voltage to ultracapacitor energy storage; Two-way buck/boost chopper is made up of an inductance and two IGBT thyristors, mainly is to carry out energy storage to storage battery; The Boost chopper is made up of inductance, diode, IGBT thyristor and capacitor C 2, the voltage that is used for energy storage device (storage battery and ultracapacitor) is emitted electric energy boosts, and capacitor C 2 is used for voltage stabilizing.Being designed with of energy storage device is beneficial to the big capacity energy storage of realization here, avoid because permanent battery damage of time causes the interruption energy storage, so the utilization that the reasonable distribution of ultracapacitor and storage battery is coordinated each other has more profound significance.
(5) inverter adopts parallel IGBT thyristor three-phase bridge rectifier circuit.
(6) filter is by two single tuned filters, and a high pass filter is formed.First single tuned filter is by C3, L5, and R1 series connection ground connection is formed, and second single tuned filter be by C4, L6; R2 forms ground connection, and high pass filter is by C5, L7, r1; R3 forms ground connection, and wherein, C6 is the capacitance of reactive-load compensation capacitor, and R4 is the system harmonics equivalent impedance.This device can be eliminated the each harmonic electric current that comes out from system and prevent the busbar voltage distortion, also satisfies the requirement of reactive compensation capacity simultaneously.Conventional apparatus mainly is that connection in series-parallel electric capacity carries out filtering and ignored the harm of high order harmonic component to equipment and system, this device solves this problem, and guarantee the safe and reliable and economical operation of energy-storage system.
Claims (3)
1. wind power generation energy-storage system; It is characterized in that: mainly constitute by wind-driven generator, filtering compensation device, rectifier, energy storage device, inverter and transformer; Wind-driven generator connects transformer, and transformer connects rectifier through filtering compensation device, and rectifier connects inverter through energy storage device; Inverter connects transformer through filtering compensation device, and transformer connects electrical network; Energy storage device is storage battery and ultracapacitor; Be provided with rest switch between wind-driven generator and the transformer and between electrical network and the transformer, between rectifier and inverter, also be provided with chopper.
2. wind power generation energy-storage system according to claim 1; It is characterized in that: said chopper comprises Buck chopper, Boost chopper and two-way Buck/Boost chopper; Rectifier connects the Buck chopper; The Buck chopper connects the Boost chopper, and the Boost chopper connects inverter; Storage battery and ultracapacitor all are connected in parallel between Buck chopper and the Boost chopper.
3. wind power generation energy-storage system according to claim 2 is characterized in that: storage battery is to be connected in parallel between Buck chopper and the Boost chopper through two-way Buck/Boost chopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201855855U CN202535090U (en) | 2012-04-27 | 2012-04-27 | Wind power generation energy storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201855855U CN202535090U (en) | 2012-04-27 | 2012-04-27 | Wind power generation energy storage system |
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| CN202535090U true CN202535090U (en) | 2012-11-14 |
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| CN2012201855855U Expired - Fee Related CN202535090U (en) | 2012-04-27 | 2012-04-27 | Wind power generation energy storage system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560667A (en) * | 2013-09-10 | 2014-02-05 | 北京工业大学 | Bidirectional power converter for vehicle hybrid energy storage system |
| CN104135031A (en) * | 2014-08-11 | 2014-11-05 | 四川慧盈科技有限责任公司 | Wind power generation system |
| CN104682411A (en) * | 2015-03-27 | 2015-06-03 | 许昌学院 | Hybrid energy storage system structure of permanent magnet direct drive type wind power system and control method |
| CN107782999A (en) * | 2014-06-11 | 2018-03-09 | 钱珺佳 | A kind of method of work of wind light mutual complementing nature imitation experiment device |
-
2012
- 2012-04-27 CN CN2012201855855U patent/CN202535090U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560667A (en) * | 2013-09-10 | 2014-02-05 | 北京工业大学 | Bidirectional power converter for vehicle hybrid energy storage system |
| CN107782999A (en) * | 2014-06-11 | 2018-03-09 | 钱珺佳 | A kind of method of work of wind light mutual complementing nature imitation experiment device |
| CN107991563A (en) * | 2014-06-11 | 2018-05-04 | 陈国栋 | Power supply and distribution, the wind light mutual complementing nature imitation experiment device of grid-connected experiment and method of work |
| CN108008219A (en) * | 2014-06-11 | 2018-05-08 | 钱珺佳 | Wind light mutual complementing nature imitation experiment device |
| CN108037386A (en) * | 2014-06-11 | 2018-05-15 | 陈国栋 | For power supply and distribution, the wind light mutual complementing nature imitation experiment device of grid-connected experiment |
| CN108037386B (en) * | 2014-06-11 | 2020-11-06 | 广东广能电力设计院有限公司 | Wind-solar complementary simulation experiment device for power supply and distribution and grid-connected experiment |
| CN107991563B (en) * | 2014-06-11 | 2021-01-15 | 国网浙江省电力有限公司绍兴供电公司 | Wind-solar complementary simulation experiment device for power supply and distribution and grid-connected experiment and working method |
| CN104135031A (en) * | 2014-08-11 | 2014-11-05 | 四川慧盈科技有限责任公司 | Wind power generation system |
| CN104135031B (en) * | 2014-08-11 | 2016-04-20 | 四川慧盈科技有限责任公司 | A kind of wind generator system |
| CN104682411A (en) * | 2015-03-27 | 2015-06-03 | 许昌学院 | Hybrid energy storage system structure of permanent magnet direct drive type wind power system and control method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20140427 |