CN204441904U - A kind of wind power-generating grid-connected configuration-system - Google Patents
A kind of wind power-generating grid-connected configuration-system Download PDFInfo
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- CN204441904U CN204441904U CN201520072271.8U CN201520072271U CN204441904U CN 204441904 U CN204441904 U CN 204441904U CN 201520072271 U CN201520072271 U CN 201520072271U CN 204441904 U CN204441904 U CN 204441904U
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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
Abstract
A kind of wind power-generating grid-connected configuration-system (abbreviation system), this system configuration is made up of wind turbine generator, electric air pump, air accumulator, aerodynamic electric generator group, step-up transformer, grid-connection cabinet.System overcomes the deficiencies in the prior art, the conveying of grid-connected electricity stable and continuous can be made, revolutionize the situation that suddenly big or suddenly small, the frequent incision of wind power-generating grid-connected energy cuts out electrical network, eliminate the impact of wind-electricity integration to electrical network, also can play Peak Load Adjustment to electrical network, improve the ability to transmit electricity of electrical network.Can be breezed up generating set operation interval, improves the utilance of wind turbine generator.The inverter that reliability is poor can be saved, improve life-span and the stability of wind power generation, reduce operation cost.With the wind power-generating grid-connected system of the utility model configuration, that thoroughly can eliminate wind-powered electricity generation industry abandons electrical phenomena.
Description
Art
The utility model relates to a kind of wind power-generating grid-connected configuration-system.
Background technology
Wind power generation is separated net type and grid type two kinds generating configuration mode, to from net type wind power generation pattern, in a kind of wind power generation configuration-system (number of patent application: 201410392299.x), provide a kind of new configuration mode, the utility model will propose a kind of new configuration mode to the Shunt-connected Wind Power Generation System.
Existing the Shunt-connected Wind Power Generation System configures the pattern generally adopted: wind turbine generator+inverter (or claiming current transformer)+step-up transformer+grid-connection cabinet, wherein wind turbine generator comprises fan blade, generator and controller three part, and wind energy is transformed into electric energy by generator under wind-force effect.The AC rectification of the instability that wind turbine generator sends by inverter becomes direct current, then DC inverter is become the alternating current of burning voltage, stabilized frequency.The low-voltage electric energy that inverter exports by step-up transformer is elevated to the high voltage electric energy consistent with electrical network.Grid-connection cabinet is compared with line voltage by the voltage detecting step-up transformer supply, the electric energy input electrical network in time wind turbine generator sent or from grid disconnection.In this system, its rotating speed of change that wind turbine generator follows wind-force size changes, the voltage sent, power change, when the generating voltage of wind turbine generator reaches the threshold voltage of inverter, inverter is started working, and electric energy wind turbine generator sent is grid-connected to be transferred out.If the voltage that wind-force is less than normal, wind turbine generator sends is less than normal, when not reaching inverter threshold voltage value, inverter does not work, the electric energy that wind turbine generator sends cannot outwards be carried, at this moment wind turbine generator is in idling conditions, if be originally in grid-connected transmission of electricity state, at this moment wind turbine generator will from grid disconnection.When wind-force becomes large, the rotating speed of wind turbine generator accelerates, and the voltage sent uprises, when reaching the threshold voltage of inverter, inverter is started working, electric energy supply step-up transformer wind turbine generator sent, through the grid-connected transmission of electricity of grid-connection cabinet, system is in generating transmission of electricity state.When wind-force continues to become large, the rotating speed of wind turbine generator accelerates, the voltage sent continues to uprise, when will exceed the ceiling voltage restriction that inverter bears, controller in wind turbine generator controls the blade pitch device work of wind turbine generator, fan blade Windward angle in wind-driven generator unit is diminished, wind turbine generator initiatively releases part wind energy, the wind energy amount obtained is diminished, wind turbine generator rotating speed step-down, the magnitude of voltage of artificial reduction wind turbine generator generating, voltage is limited in scope that inverter can bear, at this moment system is still in normal generating transmission operation state.Continue to increase if wind-force continues, above measure can not make voltage control when the voltage range that inverter can bear, and controller controls the brake in wind turbine generator, and by the blower fan locking in wind turbine generator, system is deactivated state by force.As seen from the above analysis, existing wind power-generating grid-connected configuration-system, the utilization of wind energy can only get the very little a section of centre, when wind-force is less than normal or wind-force is bigger than normal, system all can not be transmitted electricity work, not only cause the waste that resource is very large, more importantly wind turbine generator is frequently cut, is cut out electrical network, produces very large impact to electrical network.This wind power-generating grid-connected pattern cannot realize to electrical network conveying continuous print electric energy, can only be interval to grid power transmission at certain wind-force.
Be in grid power transmission interval at wind power generation, the grid-connect mode of existing wind power generation also cannot realize carrying stable electric energy to electrical network, because little time large during natural wind, changeable, the electric energy sent also with regard to time large time little, changeable, very large impact is produced to electrical network, easily causes the vibration of electrical network.
Based on above reason, less than normal in conjunction with China Power Grids capacity, the reality that electrical network fed distance is far away, electrical network department is reluctant to accept wind-electricity integration, even wind-powered electricity generation is referred to as rubbish electricity, abandons electrical phenomena serious, causes great energy waste.
In addition, in existing wind power-generating grid-connected configuration-system, inverter belongs to electronic device, and price is high, poor reliability, and cause wind power generation cost to remain high, operation expense is high, have impact on the development of wind power industry.
The situation that current China wind power industry faces is: country considers to greatly develop wind-powered electricity generation industry from energy strategy on the one hand, the wind power generation installed capacity of current China reaches the world's strongest nation, become the third-largest power field at home, electrical network department but arranges threshold restriction wind-electricity integration by fair means or foul on the other hand, cause large quantities of wind turbine generator can only to dally the predicament that can not generate electricity by way of merging two or more grid systems, become the bottleneck affecting wind-powered electricity generation industry development.
Summary of the invention
Technology of the present utility model is dealt with problems and is: overcome the deficiencies in the prior art, a kind of wind power generation is provided to configure new model, this pattern can make the conveying of wind power-generating grid-connected rear stable and continuous, the situation that suddenly big or suddenly small, the frequent incision of the wind power-generating grid-connected energy of thorough change cuts out, eliminate wind-electricity integration to the impact of electrical network, also can play Peak Load Adjustment to electrical network, increase the ability to transmit electricity of electrical network.The utility model can also breeze up generating set operation interval, improves the utilance of wind power plant.The utility model eliminates the poor inverter of reliability, improves life-span and the stability of wind power generation, reduces operation cost.With the wind power-generating grid-connected system of the utility model configuration, that thoroughly can eliminate wind-powered electricity generation industry abandons electrical phenomena.
Technical solution of the present utility model is: provide a kind of wind power-generating grid-connected configuration-system, and this system configuration is made up of wind turbine generator, electric air pump, air accumulator, aerodynamic electric generator group, step-up transformer, grid-connection cabinet.
Principle of the present utility model is: in this wind power generation configuration-system, 201410392296.6) and the electric air pump that forms of inflating pump the electric energy that wind turbine generator sends directly accesses by super wide voltage motor (number of patent application:, the electric energy that this motor utilizes wind-driven generator to send drives air pump work, inflate to air accumulator, and make the pressure that air accumulator reaches certain, gases at high pressure promote aerodynamic electric generator group and steadily generate electricity, then boosted by step-up transformer, again by the grid-connected power supply of grid-connection cabinet, the power delivery sent by wind-driven generator is gone out.
The utility model advantage is compared with prior art: one is the configuration mode having broken existing wind power-generating grid-connected system, suddenly big or suddenly small wind power energy is become the electric energy of stable and continuous, eliminates the impact of wind-electricity integration to electrical network.Two air pumps be made up of Width funtion motor fully can absorb the energy in each wind-force interval of wind turbine generator, widen wind turbine generator operation interval, improve the energy output of wind turbine generator.Three are omitted the poor inverter link of reliability, improve system reliability, save operating maintenance expense.Four is play Peak Load Adjustment to electrical network, can at night to air accumulator gas storage, and peak of power consumption is to electrical network centrally connected power supply by day, meets the needs of peak of power consumption on daytime, plays regulating action to electrical network, calling that the wind-powered electricity generation of rubbish electricity becomes high-quality electricity.
Accompanying drawing explanation
Fig. 1 is that the wind power-generating grid-connected configuration-system of one of the present utility model forms schematic diagram.
Fig. 2 is a kind of wind power-generating grid-connected configuration-system of the present utility model and the configuration of local area network (LAN) forms schematic diagram.
To be the wind power-generating grid-connected configuration-system of one of the present utility model become configuration after water storage from gas storage to Fig. 3 forms schematic diagram.
Embodiment
The wind power-generating grid-connected configuration-system of one described in the utility model, as shown in Figure 1, wind turbine generator sends electric energy under wind drive, direct access electric air pump, electric air pump institute gas-distributing motor is super wide voltage motor, the low-voltage that it can receive wind hour wind turbine generator to send and wind large time send high voltage acting.Wind-force hour, the voltage that wind turbine generator sends is low, energy is little, the rotating speed of electric air pump is slow, just few to the air feed of air accumulator, when wind-force is large, the voltage that wind turbine generator sends is high, energy is large, the rotating speed of electric air pump accelerates, just many to the air feed of air accumulator, fully can absorb the energy acting of each interval wind like this, the Windward angle of fan blade need not be changed when wind is large, reduce the power output that wind area reduces wind turbine generator, great wind energy can have been realized and just used great wind energy, fully improve the utilance of blower fan.Air accumulator stores the air of electric air pump input, promotes aerodynamic electric generator group running generating after reaching certain pressure.Aerodynamic electric generator group is made up of air engine and generator, and the gases at high pressure of air accumulator promote air engine work, thus drive electrical generators generating acting.The low-voltage electric energy that generator sends by step-up transformer, raises and becomes the high voltage electric energy identical with electrical network, be connected to the grid by grid-connection cabinet, and the power delivery sent by wind-driven generator to electrical network, then gives concrete power consumption equipment by electrical grid transmission.Air accumulator will have certain volume, can think that within a period of time the pressure of air accumulator is constant, although extraneous wind-force changed in the moment, the electric energy that wind turbine generator sends changed in the moment, the tolerance of electric air pump supply air accumulator changed in the moment, the change of a certain moment air inflow, the pressure of whole air accumulator cannot be affected, thus ensure that the pressure of air supply dynamic power unit and tolerance are constant, the rotating speed of aerodynamic electric generator group keeps constant, the voltage that aerodynamic electric generator group sends and energy are just constant, and grid-connected electricity is just constant.If reservoir pressure changes, by changing the size of air supply dynamic power unit air-flow, can stablize or control the size of aerodynamic electric generator group energy output.Through above-mentioned to inflate, steady gas, air force generating conversion after, the electric energy of instability wind turbine generator sent becomes stablizes controlled electric energy.
The normally a set of inversion of generator heel of traditional wind power-generating grid-connected configuration mode, boosting, grid-connected system, make system very huge, after adopting the utility model, the parallel connection of multiple stage wind turbine generator becomes very easy, can jointly inflate to an air accumulator by multiple stage electric air pump, just achieve the parallel connection of multiple stage wind turbine generator, then use a set of aerodynamic electric generator group, step-up transformer and grid-connection cabinet grid-connected, this is very practical in wind power generation group, greatly reduces the consumption of transformer and grid-connection cabinet.
According to the change in season, if enter the poor wind phase, natural wind diminishes, generating gas storage capability dies down, at this moment can adopt intermission power supply method, after waiting air accumulator to inflate to reach certain pressure, restart aerodynamic electric generator group to electrical network transmission of electric energy, as can in peak of power consumption to electrical network transmission of electric energy, store source of the gas at low power consumption, play Peak Load Adjustment.If electrical network needs, natural wind can not meet peak regulation need time, also the work of electrical network electricity driving electric air pump can be air accumulator inflation when electricity consumption the lowest point, by the time electric air pump is cut off during peak of power consumption, start aerodynamic electric generator group again to mains supply, system becomes peak load stations, meets the needs of peak load regulation network.
Figure 2 shows that the utility model is at wind power generation and the allocation plan of LAN system, it is further extension of the present utility model, can form a local area network (LAN) by multiple stage aerodynamic electric generator group, directly electric energy is supplied power consumption equipment, at this moment system eliminates step-up transformer.Also the generating of separate unit aerodynamic electric generator group can directly supply power consumption equipment use, at this moment system will save grid-connection cabinet further.
As extension of the present utility model, also can change gas storage into water storage, as shown in Figure 3, at this moment system is made up of wind turbine generator, electric water pump, water tank, hydro-generating Unit, step-up transformer and grid-connection cabinet.Water is given rise to certain altitude and produces potential energy by electric water pump, then promotes hydro-generating Unit generator operation with the water of high water level, then by step-up transformer, the grid-connected power supply of grid-connection cabinet, the wind energy of instability is become stable power delivery and goes out.The core of this system is the motor of electric water pump must be Width funtion motor, so that wide region absorbs the capricious energy that wind turbine generator sends.
As further extension of the present utility model, also the generator of wind turbine generator can be removed, at this moment wind turbine generator becomes wind energy conversion system, wind energy conversion system directly drives air pump or water pump, save wind-driven generator and super wide voltage motor, structure is simplified further, and operation principle as hereinbefore.If drive air pump, system becomes wind energy conversion system, air pump, air accumulator, aerodynamic electric generator group, step-up transformer, and grid-connection cabinet combines; If drive water pump, system becomes wind energy conversion system, water pump, water tank, hydro-generating Unit, step-up transformer, and grid-connection cabinet forms.But the configuration such at many scenes is often made troubles to the mounting arrangements of equipment, and the power of wind energy conversion system introducing ground often there is is the energy that loss is larger, can according to circumstances select.
Claims (1)
1. a wind power-generating grid-connected configuration-system, it is characterized in that: this system configuration is by wind turbine generator, electric air pump, air accumulator, aerodynamic electric generator group, step-up transformer, grid-connection cabinet forms, wind turbine generator sends electric energy under wind drive, direct access electric air pump, electric air pump institute gas-distributing motor is super wide voltage motor, the electric energy that motor utilizes wind turbine generator to send drives air pump work, inflate to air accumulator, the gases at high pressure of air accumulator promote aerodynamic electric generator group smooth operation generating, then boosted by step-up transformer, again by the grid-connected power supply of grid-connection cabinet, power delivery wind turbine generator sent is to electrical network, the electric energy that wind turbine generator sends is inflated in process, steady gas, after the conversion of air force generating, the electric energy of instability wind turbine generator sent becomes stablizes controlled electric energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520072271.8U CN204441904U (en) | 2015-01-28 | 2015-01-28 | A kind of wind power-generating grid-connected configuration-system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520072271.8U CN204441904U (en) | 2015-01-28 | 2015-01-28 | A kind of wind power-generating grid-connected configuration-system |
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| CN204441904U true CN204441904U (en) | 2015-07-01 |
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| CN201520072271.8U Expired - Fee Related CN204441904U (en) | 2015-01-28 | 2015-01-28 | A kind of wind power-generating grid-connected configuration-system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105990848A (en) * | 2015-01-28 | 2016-10-05 | 马力 | Wind power generation grid connected configuration system |
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2015
- 2015-01-28 CN CN201520072271.8U patent/CN204441904U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105990848A (en) * | 2015-01-28 | 2016-10-05 | 马力 | Wind power generation grid connected configuration system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151217 Address after: 271000 Taishan Youth Development Zone, Tai'an District, Shandong, China, Patentee after: Tai'an sunshine Power Motor Co., Ltd. Address before: 271022 Tai'an Shandong sunshine Power Motor Co., Ltd. Tai'an Youth Development Zone Patentee before: Ma Li |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150701 Termination date: 20210128 |
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| CF01 | Termination of patent right due to non-payment of annual fee |