CN203967764U - The double mode current transformer of a kind of wind turbine generator - Google Patents
The double mode current transformer of a kind of wind turbine generator Download PDFInfo
- Publication number
- CN203967764U CN203967764U CN201420431643.7U CN201420431643U CN203967764U CN 203967764 U CN203967764 U CN 203967764U CN 201420431643 U CN201420431643 U CN 201420431643U CN 203967764 U CN203967764 U CN 203967764U
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 241000555745 Sciuridae Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Classifications
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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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Abstract
The utility model discloses the double mode current transformer of a kind of wind turbine generator, the technical scheme adopting comprises the grid-connected contactor of stator side, pusher side current transformer, intermediate dc link, net side converter, the stator of described wind-driven generator is by the grid-connected contactor access of stator side electrical network, the rotor of described wind-driven generator by with described pusher side current transformer, intermediate dc link, the net side converter access electrical network of connecting successively, it is characterized in that: the stator side of described wind-driven generator is provided with stator side short circuit contactor, described wind-driven generator rotating speed is during lower than preset value, the grid-connected contactor of described stator side disconnects, described stator side short circuit contactor closure.The double mode current transformer of wind turbine generator of the present utility model has increased stator short circuit contactor and rotor-side voltage measurement on the basis of original current transformer topological diagram, and wind turbine generator also can be incorporated into the power networks in the situation that wind speed is lower.
Description
Technical field
The utility model belongs to technical field of wind power generation, is specifically related to a kind of wind driven generator set converter.
Background technology
Double-fed induction wind driven generator group is the mainstream model at present domestic and international wind-powered electricity generation unit.But along with the utilance of wind energy resources continues to increase, also more and more receive publicity in the limitation of low wind speed period off-grid for current double-feed current transformer, in order better to make full use of wind-resources, the operational efficiency that how to improve double-feedback aerogenerator group is the technical barrier of being badly in need of at present solution.
Utility model content
The technical problems to be solved in the utility model is to provide the double mode current transformer of a kind of wind turbine generator.
For addressing the above problem, the double mode current transformer of the technical solution adopted in the utility model wind turbine generator, comprise the grid-connected contactor of stator side, pusher side current transformer, intermediate dc link, net side converter, the stator of described wind-driven generator is by the grid-connected contactor access of stator side electrical network, the rotor of described wind-driven generator by with described pusher side current transformer, intermediate dc link, the net side converter access electrical network of connecting successively, it is characterized in that: the stator side of described wind-driven generator is provided with stator side short circuit contactor, described wind-driven generator rotating speed is during lower than preset value, the grid-connected contactor of described stator side disconnects, described stator side short circuit contactor closure.
The double mode current transformer of described wind turbine generator, is characterized in that: the rotor-side of described wind-driven generator is provided with voltage detector, current detector.
The double mode current transformer of described wind turbine generator, it is characterized in that: the 2nd pin of described stator side short circuit contactor, the 4th pin, the 6th pin copper bar short circuit, the 1st pin, the 3rd pin, the 5th pin are connected to respectively in aerogenerator stator side triple line.
The double mode current transformer of wind turbine generator of the present utility model has increased stator short circuit contactor and rotor-side voltage measurement on the basis of original current transformer topological diagram, and wind turbine generator also can be incorporated into the power networks in the situation that wind speed is lower.The low wind speed operating scheme of wind turbine generator of this programme can carry out short circuit by stator in the time of low wind speed, double feedback electric engine (hereinafter to be referred as doubly fed machine) becomes squirrel cage asynchronous motor (hereinafter to be referred as mouse cage machine) and generates electricity, electric energy flows to net side power cell from rotor-side power cell, and then realizes the operation of generating electricity by way of merging two or more grid systems.This programme both can ensure blower fan stable operation, can improve significantly again the operational efficiency of double-feedback aerogenerator group.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the low wind speed operating scheme of wind turbine generator described in the utility model topological diagram;
Fig. 2 is the rotating speed control chart of doubly fed machine pattern and mouse cage machine pattern.
Embodiment
As shown in Figure 1, the double mode current transformer of wind turbine generator of the present utility model, comprise the grid-connected contactor 1 of stator side, pusher side current transformer 2, intermediate dc link 3, net side converter 4, the stator 5 of described wind-driven generator accesses electrical network by the grid-connected contactor 1 of stator side, the rotor 6 of described wind-driven generator by with described pusher side current transformer 2, intermediate dc link 3, net side converter 4 is connected successively and is accessed electrical network, the stator side of described wind-driven generator is provided with stator side short circuit contactor 7, described wind-driven generator rotating speed is during lower than preset value, the grid-connected contactor 1 of described stator side disconnects, described stator side short circuit contactor 7 closures.Unit starts to change into squirrel-cage asynchronism generator, stator short circuit contactor is installed under column foot platform, the 2nd pin of described stator side short circuit contactor 7, the 4th pin, the 6th pin copper bar short circuit, the 1st pin, the 3rd pin, the 5th pin are connected to respectively in aerogenerator stator side triple line.
For the needs of controlling, increase rotor-side voltage detector 8, current detector 9, and carry out algorithm control by the detection of rotor voltage, electric current, therefore on hardware, also need to increase contactor and the circuit breaker of low-voltage distribution.
The course of work of the low wind speed operating scheme of wind turbine generator described in the utility model is as follows:
Definition mouse cage machine mode operation minimum speed is v1, and maximum speed is v3; Doubly fed machine operational mode minimum speed is v2, and maximum speed is v4.Described v1<v2<v3<v4.Concrete steps as shown in Figure 2.
(1) current transformer is received after master control starting command, and precharge starts net side converter 4;
(2) open in machine process and judge generator speed, when rotating speed is greater than v1, and while continuing to be less than V3, adhesive stator short circuit contactor 7, starter motor side converter 2, moves with mouse cage machine control model;
(3) in mouse cage machine mode operation process, in the time that rotating speed continues to be greater than v3, pusher side current transformer 2 is shut down, and disconnects stator side short circuit contactor 7; Starter motor side converter 2 starts excitation again afterwards, grid-connected, with doubly fed machine mode operation;
(4) in doubly fed machine mode operation process, in the time that rotating speed continues to be less than v2 and is greater than v1, grid-connected contactor 1 disconnects, and pusher side current transformer 2 is shut down; Adhesive stator short circuit contactor 7, starter motor side converter 2 again afterwards, with mouse cage machine mode operation.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all any amendments of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within being all included in protection range of the present utility model.
Claims (3)
1. the double mode current transformer of wind turbine generator, comprise the grid-connected contactor of stator side (1), pusher side current transformer (2), intermediate dc link (3), net side converter (4), the stator (5) of described wind-driven generator is by the grid-connected contactor of stator side (1) access electrical network, the rotor (6) of described wind-driven generator by with described pusher side current transformer (2), intermediate dc link (3), net side converter (4) is connected successively and is accessed electrical network, it is characterized in that: the stator side of described wind-driven generator is provided with stator side short circuit contactor (7), described wind-driven generator rotating speed is during lower than preset value, the grid-connected contactor of described stator side (1) disconnects, described stator side short circuit contactor (7) closure.
2. the double mode current transformer of wind turbine generator according to claim 1, is characterized in that: the rotor-side of described wind-driven generator is provided with voltage detector (8), current detector (9).
3. the double mode current transformer of wind turbine generator according to claim 1, it is characterized in that: the 2nd pin of described stator side short circuit contactor (7), the 4th pin, the 6th pin copper bar short circuit, the 1st pin, the 3rd pin, the 5th pin are connected to respectively in aerogenerator stator side triple line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420431643.7U CN203967764U (en) | 2014-08-01 | 2014-08-01 | The double mode current transformer of a kind of wind turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420431643.7U CN203967764U (en) | 2014-08-01 | 2014-08-01 | The double mode current transformer of a kind of wind turbine generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203967764U true CN203967764U (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420431643.7U Expired - Lifetime CN203967764U (en) | 2014-08-01 | 2014-08-01 | The double mode current transformer of a kind of wind turbine generator |
Country Status (1)
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| CN (1) | CN203967764U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105162376A (en) * | 2015-09-21 | 2015-12-16 | 南车株洲电力机车研究所有限公司 | Doubly-fed wind turbine generator control method and generator |
| CN105790298A (en) * | 2014-12-23 | 2016-07-20 | 台达电子工业股份有限公司 | Wind power generation control device and wind power generation system |
| CN106150900A (en) * | 2016-06-30 | 2016-11-23 | 华仪风能有限公司 | Double-fed asynchronous wind generator system and operation method thereof |
| CN109084984A (en) * | 2018-10-30 | 2018-12-25 | 中国船舶重工集团海装风电股份有限公司 | A kind of wind power generating set electricity generation system united test device and test method |
| CN112865178A (en) * | 2021-01-25 | 2021-05-28 | 阳光电源股份有限公司 | Double-fed wind power generation system, double-fed converter and machine side shutdown control method thereof |
| CN113178888A (en) * | 2021-04-19 | 2021-07-27 | 上海电气风电集团股份有限公司 | Wind power generation system and operation control method thereof |
| CN113937803A (en) * | 2020-06-29 | 2022-01-14 | 株洲变流技术国家工程研究中心有限公司 | Power distribution network and power generation system |
-
2014
- 2014-08-01 CN CN201420431643.7U patent/CN203967764U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790298A (en) * | 2014-12-23 | 2016-07-20 | 台达电子工业股份有限公司 | Wind power generation control device and wind power generation system |
| CN105790298B (en) * | 2014-12-23 | 2019-03-12 | 台达电子工业股份有限公司 | Wind power generation controlling device and wind generator system |
| CN105162376A (en) * | 2015-09-21 | 2015-12-16 | 南车株洲电力机车研究所有限公司 | Doubly-fed wind turbine generator control method and generator |
| CN105162376B (en) * | 2015-09-21 | 2018-05-01 | 南车株洲电力机车研究所有限公司 | A kind of double-fed fan motor unit generator control method and generator |
| CN106150900A (en) * | 2016-06-30 | 2016-11-23 | 华仪风能有限公司 | Double-fed asynchronous wind generator system and operation method thereof |
| CN109084984A (en) * | 2018-10-30 | 2018-12-25 | 中国船舶重工集团海装风电股份有限公司 | A kind of wind power generating set electricity generation system united test device and test method |
| CN113937803A (en) * | 2020-06-29 | 2022-01-14 | 株洲变流技术国家工程研究中心有限公司 | Power distribution network and power generation system |
| CN113937803B (en) * | 2020-06-29 | 2023-12-12 | 株洲变流技术国家工程研究中心有限公司 | Power distribution network and power generation system |
| CN112865178A (en) * | 2021-01-25 | 2021-05-28 | 阳光电源股份有限公司 | Double-fed wind power generation system, double-fed converter and machine side shutdown control method thereof |
| CN113178888A (en) * | 2021-04-19 | 2021-07-27 | 上海电气风电集团股份有限公司 | Wind power generation system and operation control method thereof |
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