CN101867241A - Connecting structure of generator winding of wind generating set and control method - Google Patents
Connecting structure of generator winding of wind generating set and control method Download PDFInfo
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- CN101867241A CN101867241A CN201010206410A CN201010206410A CN101867241A CN 101867241 A CN101867241 A CN 101867241A CN 201010206410 A CN201010206410 A CN 201010206410A CN 201010206410 A CN201010206410 A CN 201010206410A CN 101867241 A CN101867241 A CN 101867241A
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Abstract
The invention relates to a winding connecting structure, particularly to a connecting structure of a generator winding of a megawatt wind generating set and a control method. The connecting structure of a generator winding of a wind generating set comprises a generator, and a three-phase tap of a stator winding of the generator is respectively connected with a three-phase connection at one end of a first contactor and a second contactor; a three-phase connection at the other end of the first contactor is connected, and a three-phase connection on the other end of the second contactor is connected with the three-phase tap of the stator winding; and a rotor winding of the generator is connected with a converter. The connecting structure has the advantage that when the stator of the generator is connected, the winding of the stator can be connected to form a star shape or a triangular shape. Thus, by changing the connecting mode of the stator winding within different wind speed ranges, the output of the wind generating set is smoother thereby optimizing and improving power generation.
Description
Technical field
The present invention relates to a kind of winding syndeton, relate 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.
Summary of the invention
For solving the problems of the technologies described above syndeton and the control method that the invention provides a kind of generator of wind generating set winding, purpose 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 generator of wind generating set winding of the present invention, comprise generator, the three-phase tap 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 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.
Advantageous effect of the present invention: 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 invention.
Among the figure: 1, first contactor; 2, second contactor; 3, generator; 4, current transformer; 5, controller.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
The syndeton of generator of wind generating set winding of the present invention as shown in the figure, comprise generator 3, the three-phase tap 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 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 (5)
1. the syndeton of generator of wind generating set winding, comprise generator, the three-phase tap 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 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.
3. the control method of the syndeton of generator of wind generating set winding according to claim 1, it is characterized in that constituting: when the rotating speed of the generator of wind turbine generator surpasses preset rotation speed by following step, 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.
4. the control method of the syndeton of generator of wind generating set winding according to claim 1, it is characterized in that being made of following step: the power that produces when the generator of wind generating set stator is during less than preset value, 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.
5. the control method of the syndeton of generator of wind generating set winding according to claim 4 is characterized in that the power that described generator of wind generating set stator produces is meant mean value in 20 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010206410A CN101867241A (en) | 2010-06-22 | 2010-06-22 | Connecting structure of generator winding of wind generating set and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010206410A CN101867241A (en) | 2010-06-22 | 2010-06-22 | Connecting structure of generator winding of wind generating set and control method |
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| Publication Number | Publication Date |
|---|---|
| CN101867241A true CN101867241A (en) | 2010-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010206410A Pending CN101867241A (en) | 2010-06-22 | 2010-06-22 | Connecting structure of generator winding of wind generating set and control method |
Country Status (1)
| Country | Link |
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| CN (1) | CN101867241A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201113895Y (en) * | 2007-07-18 | 2008-09-10 | 吉林石油集团有限责任公司 | Oil pumping machine double-power automatic switchover energy-saving electrical distribution box |
| CN101741160A (en) * | 2008-11-06 | 2010-06-16 | 陈国弟 | Automobile alternating-current generator with high power density |
-
2010
- 2010-06-22 CN CN201010206410A patent/CN101867241A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201113895Y (en) * | 2007-07-18 | 2008-09-10 | 吉林石油集团有限责任公司 | Oil pumping machine double-power automatic switchover energy-saving electrical distribution box |
| CN101741160A (en) * | 2008-11-06 | 2010-06-16 | 陈国弟 | Automobile alternating-current generator with high power density |
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Application publication date: 20101020 |