CN106523302A - Device for ice melting of wind turbine blades - Google Patents
Device for ice melting of wind turbine blades Download PDFInfo
- Publication number
- CN106523302A CN106523302A CN201610972569.3A CN201610972569A CN106523302A CN 106523302 A CN106523302 A CN 106523302A CN 201610972569 A CN201610972569 A CN 201610972569A CN 106523302 A CN106523302 A CN 106523302A
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- China
- Prior art keywords
- blower fan
- bus
- battery
- energy
- deicing
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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
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- 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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- Structures Of Non-Positive Displacement Pumps (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a device for ice melting of wind turbine blades. The device comprises a wind turbine, a wind turbine side bidirectional converter, an accumulator ice melting device and a load. The wind turbine is connected to a bus by the wind turbine side bidirectional converter; the wind turbine side bidirectional converter is formed by serially connecting a wind turbine rectification AC/DC converter (1) with a DC/AC inverter (2); an accumulator is connected between the wind turbine rectification AC/DC converter (1) with the DC/AC inverter (2); and the ice melting device and the load are connected to the bus.
Description
Technical field
The present invention relates to a kind of equipment suitable for fan blade ice-melt.
Background technology
In recent years, new forms of energy one of of the wind-powered electricity generation as most competitiveness, at home and abroad field of new energy generation be subject to more next
More extensive concern.THE WIND ENERGY RESOURCES IN CHINA is extremely enriched, about 1,000,000,000 kW of the wind energy content that can be developed, wherein land wind energy
About 2.53 hundred million kW of reserves (liftoff 10m height material computation), it is marine can development and utilization about 7.5 hundred million kW of wind energy content.
Due to the continuous expansion of the ripe day by day and market scale of wind generating technology, construction cost is gradually lowered, plus
Support in upper national policy, China's wind-power electricity generation cause present the situation of high speed development.
The characteristics of wind generator system possesses off-grid operation, that is to say, that when the grid fails, blower fan still can be negative
Offer electric energy is provided and ensures its normal work.The problems such as winter grid power transmission circuit icing can cause down tower, broken string, when serious
Can even make grid disconnection operation paralyse, serious harm is caused to the safe and stable operation of electrical network.Electrical network paralysis can cause
Original ice melting system cannot start, and cause line ice coating problem more to deteriorate.The now presence of wind generator system can be
Line ice-melting plays a role.South China in 2008 meets with rare especially big ice damage, Hunan, Guizhou, Jiangxi etc. and saves electrical network
It is impaired serious, cause large-area power-cuts.In recent years, southern province winter repeatedly meet with ice damage, now can wind-power electricity generation be stablized
Off-grid operation becomes particularly important.
It is relatively low yet with winter temperature, especially In Southwest China, the ground such as Guizhou, Yunnan and Chongqing of Sichuan, due to air
Humidity is larger, therefore blade of wind-driven generator easily forms icing, and often wind-resources preferable season in winter.Due to wind
Power generating efficiency it is critical only that fan blade, and the quality of its stability and performance directly influences the conversion of wind energy, therefore wind
Machine blade de-icing technology becomes one of important technology point of wind generating technology, conventional wind power generation blade ice melting system topology
As shown in Figure 1.Battery is connected on bus via current transformer 3, and blower fan deicing device is connected directly between on bus, when wind-force is provided
When source is deficient, battery release electrical energy drive deicing device carries out blower fan ice-melt work.
Shown in Fig. 1, traditional operating diagram of the wind electricity blade ice melting system under different operating modes is as shown in Figure 2.Which is worked
Journey is represented by：Wind energy is converted to electric energy by wind-driven generator, and blower fan is output as alternating current.By rectification link AC/DC unsteady flow
The alternating current that blower fan is produced is converted to constant dc source by device (1), then will be straight through inversion link DC/AC current transformer (2)
It is load supplying with the alternating current of frequency that stream electricity is converted to the same pressure of electrical network.The unnecessary electric energy Jing current transformers when wind energy is superfluous
3 are converted to direct current energy is stored in battery as shown in Figure 2 a；When wind energy is deficient by the electric energy stored in battery
Jing current transformers 3 discharge, the normal work loaded for maintenance in being transported to ac bus, as shown in Figure 2 b.When fan blade covers
During ice, deicing device provides electric energy by ac bus as a heat load startup optimization.As can be seen that when wind energy is deficient
Reactive volt-ampere hour, blower fan side two way convertor (current transformer 1 and current transformer 2) quit work, and by the current transformer for only relying on battery side are
Load and deicing device provide required electric energy, and system topological slightly shows redundancy.
The content of the invention
The purpose of the present invention simplifies the redundancy in existing wind electricity blade deicing device so that maintaining, deicing device is original
Under conditions of function, system cost is reduced, propose a kind of device for fan blade ice-melt.
The present invention is made up of blower fan, blower fan side two way convertor, battery, deicing device and load.Blower fan Jing blower fans side
Two way convertor is connected on bus.Described blower fan side two way convertor is by blower fan rectification AC/DC current transformers (1) and DC/AC
Current transformer (2) is composed in series.Battery is connected between blower fan rectification AC/DC current transformers (1) and DC/AC current transformers (2).Ice-melt
Device and load are connected directly between on bus.
The present invention eliminates the current transformer (3) positioned at battery side on the basis of conventional fan blade deicing device, will
Battery is connected between the two way convertor of blower fan side, realizes wind resource being changed to exchange mother from blower fan side two way convertor
The function that line feeds and charges to battery.Electric energy is provided for deicing device by ac bus again, remove fan blade icing, i.e.,
Can realize and conventional fan blade ice melting system identical function.
When wind resource is superfluous, the unnecessary electrical power storage of generation in battery, now blower fan rectification AC/DC current transformers
(1) the direct current part for producing flows into DC/AC current transformers (2), and it is load supplying that ac bus are flowed into Jing after transformation of electrical energy；One
Part flows into battery and stores.If now fan blade icing, deicing device will be melted by ac bus for electrically activate
Ice works.
When wind resource is deficient, if fan blade icing, electric energy Jing DC/AC current transformers (2) for storing is sent by battery
Enter ac bus to power for deicing device, carry out blade ice-melt.
The effect of the present invention：
1) relative to conventional fan blade deicing device, the present invention by battery be connected on two two way convertors of blower fan it
Between, the current transformer (3) for separately existing in battery side is eliminated, device redundancey is reduced, is reduced installation cost.
2) due to present invention omits a current transformer being connected on ac bus (3) so that the control strategy of system
Become simpler, while reducing the introducing of a current transformer, reduce system harmonicses.
Description of the drawings
Fig. 1 is traditional wind electricity blade ice melting system topological diagram；
Fig. 2 is operating diagram of traditional wind electricity blade ice melting system under different operating modes；
Fig. 3 is wind electricity blade ice melting system topological diagram of the present invention；
Fig. 4 is operating diagram of the wind electricity blade ice melting system of the present invention under different operating modes.
Specific embodiment
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Present invention eliminates the current transformer (3) of battery is connected in existing deicing device, battery is connected to into blower fan
The redundancy of device between two way convertor, is simplified on the basis of blower fan ice-melt work is normally completed, system cost has been saved.
As shown in figure 3, the present invention is made up of blower fan, blower fan side two way convertor, battery, deicing device and load.Wind
Machine Jing blower fans side two way convertor is connected on bus.Described blower fan side two way convertor is by blower fan rectification AC/DC current transformers 1
Constitute with DC/AC inverters 2, battery is connected between blower fan rectification AC/DC current transformers 1 and DC/AC inverters 2, ice-melt dress
Put and load is connected directly between on bus.
The course of work of the wind electricity blade ice melting system of the present invention under different operating modes is as shown in Figure 4.
When wind energy is superfluous, as shown in fig. 4 a.Wind energy is converted to AC energy, blower fan rectification AC/DC unsteady flows by blower fan
AC energy is converted to the constant direct current of output as rectifier by device 1.The direct current of the output of blower fan rectification AC/DC current transformers 1
An electric energy part is sent into DC/AC inverters 2 and is converted to electrical network with pressure with the alternating current of frequency, sends into ac bus and supplies for load
Electricity；A part sends into battery storage.If now fan blade icing, provides startup electricity for deicing device by ac bus
Source, is blade deicing.
When wind energy is deficient, as shown in Figure 4 b, the electric energy release for storing in battery, Jing DC/AC inverters 2 are converted to
With electrical network with the alternating current pressed with frequency, feeding ac bus are load supplying.If now fan blade icing, by then by exchanging
Bus provides startup power supply for deicing device, is blade deicing.Now electric energy used on ac bus is produced by battery,
In whole deicing processes, only blower fan rectification AC/DC current transformers 1 are not involved in work.And under same operating mode, conventional fan leaf
In piece deicing device, blower fan rectification AC/DC current transformers 1 and DC/AC inverters 2 are all not involved in work, cause the wasting of resources.
Claims (2)
1. a kind of device suitable for fan blade ice-melt, it is characterised in that：Described device is by blower fan, blower fan side Bidirectional variable-flow
Device, battery deicing device and load composition；Blower fan Jing blower fans side two way convertor is connected on bus；Described blower fan side is double
It is composed in series to current transformer by blower fan rectification AC/DC current transformers (1) and DC/AC inverters (2), battery is connected to blower fan rectification
Between AC/DC current transformers (1) and DC/AC inverters (2), deicing device and load are connected on bus.
2. according to the device for fan blade ice-melt described in claim 1, it is characterised in that：Described device is in different works
The course of work under condition is as follows：When wind energy is superfluous, wind energy is converted to AC energy, blower fan rectification AC/DC unsteady flows by blower fan
AC energy is converted to the constant direct current of output as rectifier by device (1)；What blower fan rectification AC/DC current transformers (1) was exported
A direct current energy part is sent into DC/AC inverters (2) and is converted to electrical network with the alternating current pressed with frequency, and it is negative to send into ac bus
Carry power supply；Another part sends into battery storage；If now fan blade icing, is provided for deicing device by ac bus and is opened
Dynamic power supply, is blade deicing；When wind energy is deficient, the electric energy release stored in battery, Jing DC/AC inverters (2) conversions
It is to send into ac bus for load supplying with the alternating current of frequency with pressure with electrical network.If now fan blade icing, by then by handing over
Stream bus provides startup power supply for deicing device, is blade deicing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610972569.3A CN106523302B (en) | 2016-11-01 | 2016-11-01 | A kind of device for fan blade ice-melt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610972569.3A CN106523302B (en) | 2016-11-01 | 2016-11-01 | A kind of device for fan blade ice-melt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106523302A true CN106523302A (en) | 2017-03-22 |
| CN106523302B CN106523302B (en) | 2018-11-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610972569.3A Expired - Fee Related CN106523302B (en) | 2016-11-01 | 2016-11-01 | A kind of device for fan blade ice-melt |
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| Country | Link |
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| CN (1) | CN106523302B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114977250A (en) * | 2022-06-28 | 2022-08-30 | 中国矿业大学(北京) | Battery energy storage management system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120134804A1 (en) * | 2011-11-03 | 2012-05-31 | General Electric Company | Method and system for deicing wind turbine rotor blades with induced torque |
| CN102496898A (en) * | 2011-11-16 | 2012-06-13 | 四川大学 | Bifunctional direct current ice melting apparatus based on voltage source type current converter and ice melting method thereof |
| CN202678969U (en) * | 2012-06-26 | 2013-01-16 | 上海工程技术大学 | Micro-grid power supply system of wind-driven generator |
| CN202718816U (en) * | 2012-05-29 | 2013-02-06 | 唐其敏 | Automatic anti-icing and de-icing device for fan blade |
| CN103855724A (en) * | 2014-03-31 | 2014-06-11 | 中船重工(重庆)海装风电设备有限公司 | Micro power grid system |
-
2016
- 2016-11-01 CN CN201610972569.3A patent/CN106523302B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120134804A1 (en) * | 2011-11-03 | 2012-05-31 | General Electric Company | Method and system for deicing wind turbine rotor blades with induced torque |
| CN102496898A (en) * | 2011-11-16 | 2012-06-13 | 四川大学 | Bifunctional direct current ice melting apparatus based on voltage source type current converter and ice melting method thereof |
| CN202718816U (en) * | 2012-05-29 | 2013-02-06 | 唐其敏 | Automatic anti-icing and de-icing device for fan blade |
| CN202678969U (en) * | 2012-06-26 | 2013-01-16 | 上海工程技术大学 | Micro-grid power supply system of wind-driven generator |
| CN103855724A (en) * | 2014-03-31 | 2014-06-11 | 中船重工(重庆)海装风电设备有限公司 | Micro power grid system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114977250A (en) * | 2022-06-28 | 2022-08-30 | 中国矿业大学(北京) | Battery energy storage management system |
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| Publication number | Publication date |
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| CN106523302B (en) | 2018-11-16 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181116 Termination date: 20211101 |