CN208782501U - A kind of double-fed wind power generator group - Google Patents
A kind of double-fed wind power generator group Download PDFInfo
- Publication number
- CN208782501U CN208782501U CN201821459091.5U CN201821459091U CN208782501U CN 208782501 U CN208782501 U CN 208782501U CN 201821459091 U CN201821459091 U CN 201821459091U CN 208782501 U CN208782501 U CN 208782501U
- Authority
- CN
- China
- Prior art keywords
- double
- fed wind
- bridge arm
- doubly
- transformer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Control Of Eletrric Generators (AREA)
Abstract
The utility model discloses a kind of double-fed wind power generator groups, in doubly-fed wind turbine, the double-feed current transformer system being connect with doubly-fed wind turbine, the transformer being connect with double-feed current transformer system, and it is connected on the basis of the control cabinet between double-feed current transformer system and transformer, it is greater than the doubly-fed wind turbine of 690VAC using design voltage, and selects design voltage control cabinet identical with the design voltage of doubly-fed wind turbine.According to horse-power formula, the design voltage of doubly-fed wind turbine is increased, reduces the rated current of unit, and then the usage amount of cable in unit can be reduced, to reduce the cost of double-fed wind power generator group.
Description
Technical field
The utility model relates to wind power generation field, in particular to a kind of double-fed wind power generator group.
Background technique
In the case where national policy supports the background with energy supply anxiety, wind-powered electricity generation especially wind power equipment manufacturing industry rises abruptly rapidly
It rises.However being slowed down influence by wind-powered electricity generation industry subsidy, it is excellent that traditional 690VAC double-fed wind power generator group has not had cost
Gesture.From country and local policy: needing to substantially carry out wind-powered electricity generation between the coming years and do not depend on subsidy development, Wind Power Project
It gradually will all realize cheap internet access, wind-powered electricity generation mark post price necessarily will be lowered gradually during this period.
Therefore, how to reduce the cost of electricity-generating of double-fed wind power generator group is that those skilled in the art need to solve at present
Technical problem.
Utility model content
The purpose of the utility model is to provide a kind of double-fed wind power generator groups, and cost is relatively low compared with the prior art.
In order to solve the above-mentioned technical problem, a kind of double-fed wind power generator group provided by the utility model, comprising:
Design voltage is greater than the doubly-fed wind turbine of 690VAC, the double-fed unsteady flow connecting with the doubly-fed wind turbine
Device system, the transformer being connect with the double-feed current transformer system, and respectively with the double-feed current transformer system and the change
Depressor connection and design voltage control cabinet identical with the design voltage of the doubly-fed wind turbine.
Optionally, the double-feed current transformer system specifically includes: breaker, the first A.C. contactor, the second ac contactor
Device, net side filter, net side bridge arm and pusher side bridge arm；
Wherein, the first end of the breaker is connect with the second end of the transformer, the second end of the breaker with
The first end of first A.C. contactor connects, the second end of first A.C. contactor and the doubly-fed wind turbine
First end connection；The first end of second A.C. contactor is connect with the second end of the transformer, the net side filtering
The first end of device is connect with the second end of second A.C. contactor, and the first end and the net side of the net side bridge arm filter
The second end of device connects, and the first end of the pusher side bridge arm is connect with the second end of the net side bridge arm, the pusher side bridge arm
Second end is connect with the second end of the doubly-fed wind turbine.
Optionally, the double-feed current transformer system specifically includes: breaker, the first A.C. contactor, the second ac contactor
Device, the first net side filter, net side bridge arm, pusher side bridge arm and the second net side filter；
Wherein, the first end of the breaker is connect with the second end of the transformer, the second end of the breaker with
The first end of first A.C. contactor connects, the second end of first A.C. contactor and the doubly-fed wind turbine
First end connection；The first end of second A.C. contactor is connect with the second end of the transformer, first net side
The first end of filter is connect with the second end of second A.C. contactor, the first end of the net side bridge arm and described first
The second end of net side filter connects, and the first end of the pusher side bridge arm is connect with the second end of the net side bridge arm, and described the
The first end of two net side filters is connect with the second end of the pusher side bridge arm, the second end of the second net side filter and institute
State the second end connection of doubly-fed wind turbine.
It optionally, further include the chopper circuit being connect respectively with the net side bridge arm and the pusher side bridge arm.
It optionally, further include the overvoltage protection electricity being connect respectively with the pusher side bridge arm and the second net side filter
Road.
Optionally, the control cabinet includes the three-phase transformer for the design voltage to be converted to 690VAC voltage.
Optionally, the transformer is specially box type transformer.
Optionally, the transformer is specially the transformer that the design voltage is boosted to 35KVAC.
The utility model provides a kind of double-fed wind power generator group, in doubly-fed wind turbine, with doubly-fed wind turbine
The double-feed current transformer system of connection, the transformer being connect with double-feed current transformer system, and be connected to double-feed current transformer system and
On the basis of control cabinet between transformer, the doubly-fed wind turbine of 690VAC is greater than using design voltage, and selects to design
Voltage control cabinet identical with the design voltage of doubly-fed wind turbine.According to horse-power formula, doubly-fed wind turbine is increased
Design voltage reduces the rated current of unit, and then can reduce the usage amount of cable in unit, to reduce double-fed wind
The cost of power generator group.
Detailed description of the invention
In order to illustrate more clearly of the utility model embodiment, letter will be done to attached drawing needed in the embodiment below
Single introduction, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention, general for this field
For logical technical staff, without creative efforts, it can also be obtained according to these attached drawings other accompanying drawings.
Fig. 1 is a kind of structural schematic diagram of double-fed wind power generator group provided by the embodiment of the utility model；
Fig. 2 is the structural schematic diagram of another double-fed wind power generator group provided by the embodiment of the utility model.
Specific embodiment
The core of the utility model is to provide a kind of double-fed wind power generator group, and cost is relatively low compared with the prior art.
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than all real
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art are under the premise of making the creative labor,
Every other embodiment obtained, belongs to scope of protection of the utility model.
Fig. 1 is a kind of structural schematic diagram of double-fed wind power generator group provided by the embodiment of the utility model.Such as Fig. 1 institute
Show, double-fed wind power generator group provided by the embodiment of the utility model includes:
Design voltage is greater than the doubly-fed wind turbine 1 of 690VAC, the double-feed current transformer connecting with doubly-fed wind turbine 1
System 2, the transformer 3 being connect with double-feed current transformer system 2, and be connected between double-feed current transformer system 2 and transformer 3 and
Design voltage control cabinet 4 identical with the design voltage of the doubly-fed wind turbine.
Traditional double-fed wind power generator group uses the doubly-fed wind turbine of 690VAC, is that unit design voltage is lower,
Rated current is larger, and low-voltage cable usage amount is larger, and cost does not have competitiveness gradually on electricity market.And this reality
With new embodiment by the design voltage of raising doubly-fed wind turbine, the specified electricity of double-fed wind power generator group can be reduced
Stream, and then the usage amount of cable in double-fed wind power generator group is reduced, reduce the cost of double-fed wind power generator group.
In specific implementation, logical between doubly-fed wind turbine 1, double-feed current transformer system 2, transformer 3 and control cabinet 4
Cross low-voltage cable connection.Cable is to be coated with insulating layer, protective layer, screen for transmit electric power or signal code, signal voltage
Cover the conductor of layer etc..It can be high-tension cable and low-voltage cable by voltage point.Low-voltage cable route and low-voltage overhead line road, low pressure frame
Although empty insulated circuit is higher compared to cost, laying maintenance is more difficult, since it has reliable for operation, not pole erecting, no
Land occupation face does not hinder sight, is influenced the features such as smaller by the external world, and is used widely in low-voltage distribution system.In double-fed wind
In power generator group, low-voltage cable is widely used in a variety of applications.
The ceiling voltage that low-voltage cable can transmit is 1000VAC, for convenient for improvement and practical application, double-fed wind generating
The design voltage of machine 1 is specially 960VAC.By the design voltage of doubly-fed wind turbine 1 by traditional 690VAC promoted to
The rated current of double-fed wind generator can be reduced by 30% by 960VAC, so that the usage amount of unit low-voltage cable is substantially reduced,
Achieve the purpose that reduce unit cost.It should be noted that, although doubly-fed wind turbine in the prior art is design electricity
Pressure is the doubly-fed wind turbine of 690VAC, but is 960VAC by the available design voltage of customary technical means in the art
Doubly-fed wind turbine, therefore method of modifying is not repeated herein.
Correspondingly, control cabinet 4 is using design voltage control cabinet identical with the design voltage of doubly-fed wind turbine 1, tool
Body can be to be designed as control cabinet 4 to include the mainframe for being used to be converted to design voltage the three-phase transformer of 690VAC voltage
4.It such as selects design voltage for the doubly-fed wind turbine 1 of 960VAC, can be incited somebody to action by the three-phase transformer inside mainframe 4
960VAC voltage is converted to 690VAC.
In practical applications, transformer 3 is usually three-phase transformer.A kind of general mode is that transformer 3 specifically uses
Box type transformer has waterproof and dustproof and other effects.
Further, transformer 3 is specially the transformer that design voltage is boosted to 35KVAC, i.e. preset high-pressure can be
35KVAC。
The utility model embodiment provides a kind of double-fed wind power generator group, in doubly-fed wind turbine, with double-fed wind-force
The double-feed current transformer system of generator connection, the transformer being connect with double-feed current transformer system, and it is connected to double-feed current transformer
On the basis of control cabinet between system and transformer, the doubly-fed wind turbine of 690VAC is greater than using design voltage, and is selected
Select design voltage control cabinet identical with the design voltage of doubly-fed wind turbine.According to horse-power formula, double-fed wind-force hair is increased
The design voltage of motor reduces the rated current of unit, and then can reduce the usage amount of cable in unit, to reduce
The cost of double-fed wind power generator group.
Fig. 2 is the structural schematic diagram of another double-fed wind power generator group provided by the embodiment of the utility model.
On the basis of the above embodiments, in another embodiment, double-feed current transformer system 2 can specifically include: open circuit
Device QF1, the first A.C. contactor KM1, the second A.C. contactor LM2, net side filter, net side bridge arm and pusher side bridge arm；
Wherein, the first end of circuit breaker Q F1 is connect with the second end of transformer 3, and the second end of circuit breaker Q F1 is handed over first
The first end connection of contactor KM1 is flowed, the second end of the first A.C. contactor KM1 and the first end of doubly-fed wind turbine 1 connect
It connects；The first end of second A.C. contactor LM2 is connect with the second end of transformer 3, and the first end of net side filter is handed over second
The second end connection of contactor LM2 is flowed, the first end of net side bridge arm connect with the second end of net side filter, and the of pusher side bridge arm
One end is connect with the second end of net side bridge arm, and the second end of pusher side bridge arm is connect with the second end of doubly-fed wind turbine 1.
Double-feed current transformer is an important equipment electrical equipment in double-fed wind power generator group, for sending out double-fed wind-force
The electric energy that motor 1 generates carries out rectification and inversion to input power grid.The utility model embodiment provides specific double-fed unsteady flow
The embodiment of device system 2.It should be noted that " first end " described in the utility model embodiment and " second end " is only
In order to distinguish the port of element.
Further, as shown in Fig. 2, double-feed current transformer system 2 specifically includes: circuit breaker Q F1, the first A.C. contactor
KM1, the second A.C. contactor LM2, the first net side filter, net side bridge arm, pusher side bridge arm and the second net side filter；
Wherein, the first end of circuit breaker Q F1 is connect with the second end of transformer 3, and the second end of circuit breaker Q F1 is handed over first
The first end connection of contactor KM1 is flowed, the second end of the first A.C. contactor KM1 and the first end of doubly-fed wind turbine 1 connect
It connects；The first end of second A.C. contactor LM2 is connect with the second end of transformer 3, the first end of the first net side filter and the
The second end of two A.C. contactor LM2 connects, and the first end of net side bridge arm is connect with the second end of the first net side filter, pusher side
The first end of bridge arm is connect with the second end of net side bridge arm, and the first end of the second net side filter and the second end of pusher side bridge arm connect
It connects, the second end of the second net side filter is connect with the second end of doubly-fed wind turbine 1.
Further, double-fed wind power generator group can also include the copped wave connecting respectively with net side bridge arm and pusher side bridge arm
Circuit to pressure regulation and plays the role of inhibiting grid side harmonic current noise.
Further, double-fed wind power generator group further includes the mistake connecting respectively with pusher side bridge arm and the second net side filter
Voltage protection circuit, to play the role of overvoltage protection in power grid.
The specific embodiment of chopper circuit and excess voltage protection can refer to the prior art, and details are not described herein.
Double-fed wind power generator group provided by the embodiment of the utility model provides a kind of specific double-feed current transformer system
Embodiment, and by the way that chopper circuit is added, excess voltage protection etc. improve double-fed wind power generator group stability and
Safety.
Double-fed wind power generator group provided by the utility model is described in detail above.Each reality in specification
It applies example to be described in a progressive manner, it is with other embodiments without place, each implementation that each embodiment, which stresses,
Same and similar part may refer to each other between example.
It should be pointed out that for those skilled in the art, before not departing from the utility model principle
It puts, several improvements and modifications can be made to this utility model, these improvement and modification also fall into the utility model right
It is required that protection scope in.
It should also be noted that, in the present specification, such as first and second etc relational terms are used merely to one
A entity or operation are perhaps operated with another entity and are distinguished without necessarily requiring or implying these entities or behaviour
There are any actual relationship or orders between work.Moreover, the terms "include", "comprise" or its any variant are intended to
Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of element not only includes that
A little elements, but also other elements including being not explicitly listed either further include for this process, method, article or setting
Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element.
Claims (10)
1. a kind of double-fed wind power generator group characterized by comprising
Design voltage is greater than the doubly-fed wind turbine of 690VAC, the double-feed current transformer system connecting with the doubly-fed wind turbine
System, the transformer being connect with the double-feed current transformer system, and respectively with the double-feed current transformer system and the transformer
Connection and design voltage control cabinet identical with the design voltage of the doubly-fed wind turbine.
2. double-fed wind power generator group according to claim 1, which is characterized in that the doubly-fed wind turbine, described
It is connected by low-voltage cable between double-feed current transformer system, the transformer and the control cabinet.
3. double-fed wind power generator group according to claim 2, which is characterized in that the doubly-fed wind turbine is specially
Design voltage is the doubly-fed wind turbine of 960VAC.
4. double-fed wind power generator group according to claim 1, which is characterized in that the double-feed current transformer system is specifically wrapped
It includes: breaker, the first A.C. contactor, the second A.C. contactor, net side filter, net side bridge arm and pusher side bridge arm；
Wherein, the first end of the breaker is connect with the second end of the transformer, the second end of the breaker with it is described
The first end of first A.C. contactor connects, and the of the second end of first A.C. contactor and the doubly-fed wind turbine
One end connection；The first end of second A.C. contactor is connect with the second end of the transformer, the net side filter
First end is connect with the second end of second A.C. contactor, the first end of the net side bridge arm and the net side filter
Second end connection, the first end of the pusher side bridge arm are connect with the second end of the net side bridge arm, and the second of the pusher side bridge arm
End is connect with the second end of the doubly-fed wind turbine.
5. double-fed wind power generator group according to claim 1, which is characterized in that the double-feed current transformer system is specifically wrapped
It includes: breaker, the first A.C. contactor, the second A.C. contactor, the first net side filter, net side bridge arm, pusher side bridge arm and
Two net side filters；
Wherein, the first end of the breaker is connect with the second end of the transformer, the second end of the breaker with it is described
The first end of first A.C. contactor connects, and the of the second end of first A.C. contactor and the doubly-fed wind turbine
One end connection；The first end of second A.C. contactor is connect with the second end of the transformer, the first net side filtering
The first end of device is connect with the second end of second A.C. contactor, the first end of the net side bridge arm and first net side
The second end of filter connects, and the first end of the pusher side bridge arm is connect with the second end of the net side bridge arm, second net
The first end of side filter is connect with the second end of the pusher side bridge arm, the second end of the second net side filter and described double
Present the second end connection of wind-driven generator.
6. double-fed wind power generator group according to claim 4 or 5, which is characterized in that further include respectively with the net side
The chopper circuit that bridge arm is connected with the pusher side bridge arm.
7. double-fed wind power generator group according to claim 5, which is characterized in that further include respectively with the pusher side bridge arm
The excess voltage protection connected with the second net side filter.
8. double-fed wind power generator group according to claim 1, which is characterized in that the control cabinet includes for will be described
Design voltage is converted to the three-phase transformer of 690VAC voltage.
9. double-fed wind power generator group according to claim 1, which is characterized in that the transformer is specially box-type transformation
Device.
10. double-fed wind power generator group according to claim 1, which is characterized in that the transformer is specially will be described
Design voltage boosts to the transformer of 35KVAC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821459091.5U CN208782501U (en) | 2018-09-06 | 2018-09-06 | A kind of double-fed wind power generator group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821459091.5U CN208782501U (en) | 2018-09-06 | 2018-09-06 | A kind of double-fed wind power generator group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208782501U true CN208782501U (en) | 2019-04-23 |
Family
ID=66160085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821459091.5U Active CN208782501U (en) | 2018-09-06 | 2018-09-06 | A kind of double-fed wind power generator group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208782501U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108899938A (en) * | 2018-09-06 | 2018-11-27 | 浙江运达风电股份有限公司 | A kind of double-fed wind power generator group |
| EP3843227A1 (en) * | 2019-12-23 | 2021-06-30 | Nordex Energy SE & Co. KG | Double-fed wind energy system with a medium voltage transformer |
-
2018
- 2018-09-06 CN CN201821459091.5U patent/CN208782501U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108899938A (en) * | 2018-09-06 | 2018-11-27 | 浙江运达风电股份有限公司 | A kind of double-fed wind power generator group |
| CN108899938B (en) * | 2018-09-06 | 2024-03-15 | 运达能源科技集团股份有限公司 | Double-fed wind generating set |
| EP3843227A1 (en) * | 2019-12-23 | 2021-06-30 | Nordex Energy SE & Co. KG | Double-fed wind energy system with a medium voltage transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110829478B (en) | Low-frequency alternating-current uncontrolled rectification power transmission system of offshore wind power plant | |
| Chen et al. | Low-frequency AC transmission for offshore wind power | |
| CN112421670B (en) | Intermediate-frequency flexible direct-current power transmission system suitable for sending out wind power from open sea and control method thereof | |
| Glinkowski et al. | Advances in wind energy technologies in the context of smart grid | |
| CN102520218B (en) | Programmable trouble power simulator | |
| CN110829479A (en) | High-frequency uncontrolled rectification direct-current power transmission system of offshore wind farm | |
| CN105610158B (en) | A kind of Distributed Power Flow controller and its control method | |
| CN208782501U (en) | A kind of double-fed wind power generator group | |
| CN103078329B (en) | Output reactive compensation analysis method for long-distance 200kV submarine cable of offshore wind plant | |
| CN109616904A (en) | Increasing apparatus and energy storage container equipment for energy storage container equipment | |
| CN106026177B (en) | The power grid"black-start" method of electricity generation system is stored up based on light | |
| CN108899938A (en) | A kind of double-fed wind power generator group | |
| CN103812133B (en) | Grid-connected photovoltaic power station power control system and remote control method thereof | |
| CN206211533U (en) | A kind of capacitor tuning type automatic Following-up Compensation Arc-decreasing Wires system | |
| CN102882393B (en) | Power supply device for converter valve of static VAR generator | |
| CN202405792U (en) | Mining high-voltage dynamic filter energy saving device | |
| CN106528944A (en) | Analysis method for obtaining maximum transient overvoltage of single feeder line of offshore wind power plant under asymmetric short circuit fault | |
| CN204030623U (en) | The power control system at grid-connected photovoltaic power generation station | |
| CN110034575A (en) | Method for arranging suitable for extra-high voltage large capacity flexible direct current converter station starting-up later time | |
| Tejavoth et al. | Power quality improvement for grid connected wind energy system using STATCOM-Control scheme | |
| CN102721911B (en) | Method and system for impulse withstand voltage test of transformer | |
| Chicco et al. | Experimental analysis of wind farms connected to the high voltage grid: the viewpoint of power quality | |
| CN102545223A (en) | High-voltage dynamic filtering power-saving device for mine | |
| Force | Benchmark systems for network integration of renewable and distributed energy resources | |
| CN209692629U (en) | A kind of arragement construction of extra-high voltage large capacity flexible direct current converter station starting-up later time |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |