CN109672211A - A kind of Wind turbines electrical system - Google Patents
A kind of Wind turbines electrical system Download PDFInfo
- Publication number
- CN109672211A CN109672211A CN201710962027.2A CN201710962027A CN109672211A CN 109672211 A CN109672211 A CN 109672211A CN 201710962027 A CN201710962027 A CN 201710962027A CN 109672211 A CN109672211 A CN 109672211A
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- transformer
- power grid
- wind turbines
- double
- current transformer
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- 238000004804 winding Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Classifications
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- H02J3/386—
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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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- Control Of Eletrric Generators (AREA)
Abstract
The invention discloses a kind of Wind turbines electrical systems, including double-fed generator, current transformer and the first transformer, the stator of the double-fed generator is directly connected with power grid, and the rotor of the double-fed generator is successively connected with the current transformer, and the current transformer is connected through the first transformer with power grid.Wind turbines electrical system of the invention has many advantages, such as that structure is simple, at low cost, environment friendly is high and generated energy is high.
Description
Technical field
The invention mainly relates to technical field of wind power generation, refer in particular to a kind of Wind turbines electrical system.
Background technique
Dispersion (distribution) formula wind-powered electricity generation is to solve the problems, such as one of various most efficient solution that current wind-powered electricity generation industry faces, is to work as
The most effective measure of wind electricity digestion is solved the problems, such as in preceding or even future longer period；It is also the inexorable trend of external Wind Power Development
One of.Such as Denmark's dispersion (distribution) formula wind-powered electricity generation accounts for the 88% of whole wind-powered electricity generations, and in China, it is main to disperse (distribution) formula Wind Power Project
The middle southeast is concentrated on, the features in these areas require dispersion (distribution) formula Wind turbines to have better environment friendly, more
Unit economy well, more generated energy.Environment friendly requires unit minimum to the disturbance in soil, and this requires optimizations to work as
The case of preceding Wind turbines becomes or case change is put into cabin or is put into tower (outer), and it is right since construction case becomes to cancel
Soil reclamation disturbance；Better cost-effectiveness requirement Wind turbines carry out deeper into the system integration, by dispersion (distribution) formula power grid
It is directly integrated, is cut down the number of intermediate links with Wind turbines, promote the economy of unit；Intermediate conversion link is reduced, electricity is promoted
The efficiency of gas system increases the generated energy of blower.
Summary of the invention
The technical problem to be solved in the present invention is that, for technical problem of the existing technology, the present invention provides one
Kind is at low cost, promotes the Wind turbines electrical system of environment friendly and generated energy.
In order to solve the above technical problems, technical solution proposed by the present invention are as follows:
A kind of Wind turbines electrical system, including double-fed generator, current transformer and the first transformer, the double-fed generator are determined
Son is directly connected with power grid, and the rotor of the double-fed generator is connected with the current transformer, and the current transformer is through the first transformer
It is connected with power grid.
As a further improvement of the above technical scheme:
First transformer includes multiple groups winding, wherein one group of winding is connected with current transformer.
One group of winding of first transformer is connected with a personal electrical circuit, for the cooling motor of blower, water pump, partially
Boat system, pitch-controlled system and control system are powered.
It further include a personal electrical circuit and the second transformer, the personal electrical circuit is through the second transformer and the power grid phase
Even, for being powered to the cooling motor of blower, water pump, yaw system, pitch-controlled system and control system.
It further include a personal electrical circuit and the second transformer, the personal electrical circuit successively becomes through the second transformer and first
It is connected after depressor with the power grid, for being carried out to the cooling motor of blower, water pump, yaw system, pitch-controlled system and control system
Power supply.
It is in series between the double-fed generator and power grid and connects for completing double-fed generator and power grid under normal circumstances
The first switch that make and break is opened.
Be in series between the double-fed generator and power grid in abnormal cases cutting double-fed generator and power grid it
Between connection to guarantee the second switch of electrical safety.
The rotor of the double-fed generator be directly connected with the current transformer or by reactor, fuse, contactor,
Any one in breaker or filter is connected with the current transformer.
It is provided between the current transformer and power grid for realizing the third switch of on-off between current transformer and power grid.
Between the current transformer and transformer, pass through reactor, fuse, contactor, open circuit between transformer and power grid
Any one in device or filter is connected.
Compared with the prior art, the advantages of the present invention are as follows:
Wind turbines electrical system of the invention separates the stator grid entry point of double-fed generator and current transformer grid entry point, is promoted
Stator grid-connected voltage makes stator be directly incorporated into power grid, and current transformer is connected to the grid after being boosted by transformer, so as to cancel
Traditional case becomes, and reduces case and becomes expropriation of land, reduces the civil engineering that case becomes, and reduces the disturbance to environment, promotes environment friendly；By
It is directly integrated in power grid, reduces intermediate conversion link, improve generated energy.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention one.
Fig. 2 is the structural schematic diagram of the embodiment of the present invention two.
Fig. 3 is the structural schematic diagram of the embodiment of the present invention three.
Specific embodiment
Below in conjunction with Figure of description and specific embodiment, the invention will be further described.
Embodiment one:
As shown in Figure 1, the Wind turbines electrical system of the present embodiment, is applied to dispersion (distribution) formula generating set, including double-fed
Generator M, current transformer CNT and the first transformer T1, the stator of double-fed generator M are directly connected with power grid (power supply in Fig. 1),
The rotor of double-fed generator is connected with current transformer, and current transformer is connected through the first transformer with power grid.Wind turbines electricity of the invention
Gas system separates the stator grid entry point of double-fed generator and current transformer grid entry point, promotes stator grid-connected voltage, keeps stator direct
It is connected to the grid, and current transformer is connected to the grid after being boosted by transformer, becomes so as to cancel traditional case, reduces case and becomes sign
Ground reduces the civil engineering that case becomes, and reduces the disturbance to environment, promotes environment friendly；Due to being directly integrated with power grid, reduce
Intermediate conversion link, improves generated energy.
In the present embodiment, the first transformer T1 is two-winding transformer, is connected respectively with current transformer and power grid.
It further include a personal electrical circuit and the second transformer (two-winding transformer), electrical circuit warp of using by oneself in the present embodiment
Second transformer is connected with power grid, for carrying out to the cooling motor of blower, water pump, yaw system, pitch-controlled system and control system
Power supply；As shown in Figure 1, P is represented from power load (or auxiliary power load).
At least one is in series in the present embodiment, between double-fed generator and power grid for completing double-fed under normal circumstances
Generator connect the first switch with disconnection with power grid；First switch uses contactor or breaker or disconnecting switch etc., such as Fig. 1
Middle C1；In addition, be in series between double-fed generator and power grid at least one in abnormal cases cutting double-fed generator with
The second switch to guarantee electrical safety is connected between power grid, such as the switch of breaker, fuse or electrification behaviour, is seen in Fig. 1
B。
In the present embodiment, the rotor of double-fed generator directly with current transformer be connected or by reactor, fuse, contact
Any one in device, breaker or filter is connected with current transformer；The part that current transformer is connect with power grid is known as current transformer net side
Circuit is provided between current transformer and power grid in current transformer net side circuit for realizing of on-off between current transformer and power grid
Three switches are shown in the C2 in Fig. 1 such as the switch of breaker, fuse or electrification behaviour.
In the present embodiment, passes through reactor between current transformer and transformer, between transformer and power grid, fuse, contacts
Any one in device, breaker or filter is connected；Certainly, pass through reactor, fusing in whole system between all parts
Any one in device, contactor, breaker or filter is connected, and is indicated with L.
Wind turbines electrical system of the invention is omitted case change and case becomes although increasing transformer cost
The cost of attached (cable, expropriation of land) etc., reduces costs, also improves environment friendly.
Embodiment two:
As shown in Fig. 2, the difference of the present embodiment and embodiment one is only that the connection relationship of the second transformer and power grid, in this reality
Apply in example, personal electrical circuit is connected with the side of the second transformer, the other side of the second transformer be connected to the first transformer and
In circuit between current transformer.Other not described contents are the same as example 1, and details are not described herein.
Embodiment three:
As shown in figure 3, the difference of the present embodiment and embodiment one is only that the structure choice of the first transformer, in the present embodiment
In, using three-winding transformer, personal electrical circuit can directly be connected with one group of winding of the first transformer, to save the second change
Depressor can further reduce the cost.Other not described contents are the same as example 1, and details are not described herein.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention should be regarded as protection of the invention
Range.
Claims (10)
1. a kind of Wind turbines electrical system, which is characterized in that described including double-fed generator, current transformer and the first transformer
The stator of double-fed generator is directly connected with power grid, and the rotor of the double-fed generator is connected with the current transformer, the unsteady flow
Device is connected through the first transformer with power grid.
2. Wind turbines electrical system according to claim 1, which is characterized in that first transformer include multiple groups around
Group, wherein one group of winding is connected with current transformer.
3. Wind turbines electrical system according to claim 2, which is characterized in that one group of winding of first transformer
It is connected with a personal electrical circuit, for being supplied to the cooling motor of blower, water pump, yaw system, pitch-controlled system and control system
Electricity.
4. Wind turbines electrical system according to claim 1, which is characterized in that further include a personal electrical circuit and second
Transformer, the personal electrical circuit are connected through the second transformer with the power grid, are used for blower cooling motor, water pump, yaw
System, pitch-controlled system and control system are powered.
5. Wind turbines electrical system according to claim 1, which is characterized in that further include a personal electrical circuit and second
Transformer, the personal electrical circuit are successively connected after the second transformer and the first transformer with the power grid, are used for blower
Cooling motor, water pump, yaw system, pitch-controlled system and control system are powered.
6. Wind turbines electrical system as claimed in any of claims 1 to 5, which is characterized in that the double-fed hair
The first switch for connecting and disconnecting with power grid for completing double-fed generator under normal circumstances is in series between motor and power grid.
7. Wind turbines electrical system as claimed in any of claims 1 to 5, which is characterized in that the double-fed hair
It is in series between motor and power grid and connects for cutting off in abnormal cases between double-fed generator and power grid to guarantee electrically to pacify
Full second switch.
8. Wind turbines electrical system as claimed in any of claims 1 to 5, which is characterized in that the double-fed hair
The rotor of motor is directly connected with the current transformer or by appointing in reactor, fuse, contactor, breaker or filter
One kind of anticipating is connected with the current transformer.
9. Wind turbines electrical system as claimed in any of claims 1 to 5, which is characterized in that the current transformer
It is provided between power grid for realizing the third switch of on-off between current transformer and power grid.
10. Wind turbines electrical system as claimed in any of claims 1 to 5, which is characterized in that the current transformer
Between transformer, pass through in reactor, fuse, contactor, breaker or filter between the transformer and power grid
It anticipates a kind of be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710962027.2A CN109672211A (en) | 2017-10-17 | 2017-10-17 | A kind of Wind turbines electrical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710962027.2A CN109672211A (en) | 2017-10-17 | 2017-10-17 | A kind of Wind turbines electrical system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109672211A true CN109672211A (en) | 2019-04-23 |
Family
ID=66139532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710962027.2A Pending CN109672211A (en) | 2017-10-17 | 2017-10-17 | A kind of Wind turbines electrical system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109672211A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112909989A (en) * | 2019-12-04 | 2021-06-04 | 中车株洲电力机车研究所有限公司 | Medium-voltage double-fed wind turbine generator and control method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1227797C (en) * | 1997-11-28 | 2005-11-16 | Abb股份有限公司 | Wind power plant |
| CN202014103U (en) * | 2010-08-27 | 2011-10-19 | 河南天创新能源设备有限公司 | Wind power generation controlling and inverting system |
| CN103683332A (en) * | 2013-12-30 | 2014-03-26 | 合肥工业大学 | Method for reducing active power loss of double-fed inductive wind generation set |
| CN103887789A (en) * | 2014-04-10 | 2014-06-25 | 曲阜师范大学 | Double-fed wind generation set converter topological structure for flexible direct-current electricity transmission system |
| CN105874676A (en) * | 2013-10-18 | 2016-08-17 | Abb技术有限公司 | Auxiliary power system for turbine-based energy generation system |
| US20170229907A1 (en) * | 2016-02-10 | 2017-08-10 | General Electric Company | System and Method For Operating A Wind Turbine |
-
2017
- 2017-10-17 CN CN201710962027.2A patent/CN109672211A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1227797C (en) * | 1997-11-28 | 2005-11-16 | Abb股份有限公司 | Wind power plant |
| CN202014103U (en) * | 2010-08-27 | 2011-10-19 | 河南天创新能源设备有限公司 | Wind power generation controlling and inverting system |
| CN105874676A (en) * | 2013-10-18 | 2016-08-17 | Abb技术有限公司 | Auxiliary power system for turbine-based energy generation system |
| CN103683332A (en) * | 2013-12-30 | 2014-03-26 | 合肥工业大学 | Method for reducing active power loss of double-fed inductive wind generation set |
| CN103887789A (en) * | 2014-04-10 | 2014-06-25 | 曲阜师范大学 | Double-fed wind generation set converter topological structure for flexible direct-current electricity transmission system |
| US20170229907A1 (en) * | 2016-02-10 | 2017-08-10 | General Electric Company | System and Method For Operating A Wind Turbine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112909989A (en) * | 2019-12-04 | 2021-06-04 | 中车株洲电力机车研究所有限公司 | Medium-voltage double-fed wind turbine generator and control method thereof |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190423 |
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| RJ01 | Rejection of invention patent application after publication |