CN201797392U - Connecting structure for generator windings of wind generating set - Google Patents
Connecting structure for generator windings of wind generating set Download PDFInfo
- Publication number
- CN201797392U CN201797392U CN2010202333707U CN201020233370U CN201797392U CN 201797392 U CN201797392 U CN 201797392U CN 2010202333707 U CN2010202333707 U CN 2010202333707U CN 201020233370 U CN201020233370 U CN 201020233370U CN 201797392 U CN201797392 U CN 201797392U
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- generator
- contactor
- generating set
- connecting structure
- winding
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Abstract
The utility model relates to a winding connecting structure, in particular to a connecting structure for generator windings of a megawatt-level wind generating set. The connecting structure for generator windings of a wind generating set comprises a generator, a three-phase tap II of a stator winding of the generator is respectively connected with a three-phase joint at one end of a first contactor and a three-phase joint at one end of a second contactor, three-phase joints at the other end of the first contactor are connected with each other, a three-phase joint at the other end of the second contactor is connected with a three-phase tap I of the stator winding, and a generator rotor winding is connected with a current transformer. The connecting structure has the advantages that windings of stators can be connected in a star shape and can also be connected triangularly during connection of the connecting structure for generator stators. The generating set realizes smoother output by means of changing connection modes of stator windings in different wind speed ranges, thereby optimizing power generation and generating higher power.
Description
Technical field
The utility model relates to a kind of winding syndeton, relates in particular to a kind of syndeton and control method of MW class wind turbine group generator windings.
Background technology
The conventional wind power generator group stator directly link to each other by synchro switch with electrical network, generator unit stator winding inner connecting way is without any variation, only a kind of connected mode links to each other with electrical network.When different wind speed, existence can not be carried out the defective of the variation of stator winding inner connecting way according to the wind field change of wind velocity, realizes optimizing the wind turbine generator power output thereby can not change by the stator interior connected mode.
The utility model content
For solve the problems of the technologies described above the utility model a kind of syndeton and control method of generator of wind generating set winding, purpose being provided is to make the generator unit stator winding change the syndeton of stator winding according to different wind speed when power output.
For reaching the syndeton of above-mentioned purpose the utility model generator of wind generating set winding, comprise generator, the three-phase tap two of the stator winding of generator is connected with the three phase connection of an end of first contactor and second contactor respectively, the three phase connection of the other end of first contactor is connected, the three phase connection of the second contactor other end is connected with the three-phase tap one of stator winding, and the sub-rotor winding that generates electricity is connected with current transformer.
Described current transformer is connected with controller.
The control method of the syndeton of generator of wind generating set winding, constitute by following step: when the rotating speed of the generator of wind turbine generator surpasses preset rotation speed, connect first contactor or second contactor, when wind speed surpasses 9m/s, to connect stator winding second contactor, stator winding connects electrical network with triangle; When wind speed during, connect first contactor of stator winding, with the Y-connection electrical network less than 9m/s.
The control method of the syndeton of generator of wind generating set winding is made of following step: the power that produces when the generator of wind generating set stator is during less than preset value, and the first contactor work links to each other with electrical network in the Y-connection mode; The power that produces when the generator of wind generating set stator is during greater than preset value, the second contactor work, and generator unit stator then is adjusted into triangle and connects.
The power that described generator of wind generating set stator produces is meant mean value in 20 seconds.
The utility model has the advantages of: make the generator unit stator syndeton, the winding of stator can connect into star and also can connect into triangle when connecting.Therefore, unit by changing the mode of connection of stator winding, makes unit output more smooth and easy in different wind speed range, thereby has optimized the production of power, makes to produce more power.
Description of drawings
Fig. 1 is a connection diagram of the present utility model.
Among the figure: 1, first contactor; 2, second contactor; 3, generator; 4, current transformer; 5, controller.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
The syndeton of the utility model generator of wind generating set winding as shown in the figure, comprise generator 3, the three-phase tap two (U2, V2, W2) that it is characterized in that the stator winding of generator is connected with the three phase connection of first contactor 1 with an end of second contactor 2 respectively, the three phase connection of the other end of first contactor 1 is connected, the three phase connection of second contactor, 2 other ends is connected with the three-phase tap one (U1, V1, W1) of stator winding, the sub 3 rotor windings that generate electricity are connected with current transformer 4, and current transformer 4 is connected with controller 5.
The control method of the syndeton of generator of wind generating set winding, constitute by following step: when the rotating speed of the generator of wind turbine generator reaches preset rotation speed, wind turbine generator connects current transformer 4, realize the control of generator amature exciting current by current transformer control, generator enters into the generator operation program; When the rotating speed of the generator of wind turbine generator surpasses preset rotation speed, connect first contactor or second contactor, when wind speed surpasses 9m/s, will connect stator winding second contactor, stator winding connects electrical network with triangle; When wind speed during, connect first contactor of stator winding, with the Y-connection electrical network less than 9m/s.
The control method of the syndeton of generator of wind generating set winding is made of following step: the power that produces when the generator of wind generating set stator is during less than preset value, and the first contactor work links to each other with electrical network in the Y-connection mode; The power that produces when the generator of wind generating set stator is during greater than preset value, the second contactor work, and generator unit stator then is adjusted into triangle and connects; The power that the generator of wind generating set stator produces is meant mean value in 20 seconds.
Claims (2)
1. the syndeton of generator of wind generating set winding, comprise generator, the three-phase tap two that it is characterized in that the stator winding of generator is connected with the three phase connection of an end of first contactor and second contactor respectively, the three phase connection of the other end of first contactor is connected, the three phase connection of the second contactor other end is connected with the three-phase tap one of stator winding, and the sub-rotor winding that generates electricity is connected with current transformer.
2. the syndeton of generator of wind generating set winding according to claim 1 is characterized in that described current transformer is connected with controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202333707U CN201797392U (en) | 2010-06-22 | 2010-06-22 | Connecting structure for generator windings of wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202333707U CN201797392U (en) | 2010-06-22 | 2010-06-22 | Connecting structure for generator windings of wind generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201797392U true CN201797392U (en) | 2011-04-13 |
Family
ID=43852289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202333707U Expired - Fee Related CN201797392U (en) | 2010-06-22 | 2010-06-22 | Connecting structure for generator windings of wind generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201797392U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114498991A (en) * | 2021-12-30 | 2022-05-13 | 西安中车永电捷力风能有限公司 | Stator winding connection structure of double-fed wind driven generator |
-
2010
- 2010-06-22 CN CN2010202333707U patent/CN201797392U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114498991A (en) * | 2021-12-30 | 2022-05-13 | 西安中车永电捷力风能有限公司 | Stator winding connection structure of double-fed wind driven generator |
| CN114498991B (en) * | 2021-12-30 | 2024-06-07 | 西安中车永电捷力风能有限公司 | Stator winding connection structure of doubly-fed wind generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20150622 |
|
| EXPY | Termination of patent right or utility model |