CN202735484U - Full power test device of direct-drive type megawatt-class permanent magnet synchronous generator - Google Patents
Full power test device of direct-drive type megawatt-class permanent magnet synchronous generator Download PDFInfo
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- CN202735484U CN202735484U CN 201220423430 CN201220423430U CN202735484U CN 202735484 U CN202735484 U CN 202735484U CN 201220423430 CN201220423430 CN 201220423430 CN 201220423430 U CN201220423430 U CN 201220423430U CN 202735484 U CN202735484 U CN 202735484U
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- synchronous generator
- frequency converter
- direct
- dragging motor
- permanent magnet
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Abstract
The utility model discloses a full power test device of a direct-drive type megawatt-class permanent magnet synchronous generator. The full power test device of the direct-drive type megawatt-class permanent magnet synchronous generator comprises a full power wind power frequency converter, a drive motor and a drive motor frequency converter. The full power wind power frequency converter is connected with a stator end of the synchronous generator, and then is connected with a power grid. A rotor end of the drive motor passes through a gearbox on one side of the drive motor. A connecting flange is connected with a rotor end of the synchronous generator. A stator of the drive motor is connected with the drive motor frequency converter through a cable, and the drive motor frequency converter is connected with the power grid through a cable. The stator end of the synchronous generator is further connected with an electric energy quality analyzer used for measurement, a current transformer, a voltage transformer and an oscilloscope. The synchronous generator is further provided with a vibration sensor. A sensor junction box and the vibration sensor of the synchronous generator are connected with a PLC module used for monitoring through cables. The device provided by the utility model has the advantages of reasonable structure design, convenient use, high test efficiency and good effect, and can effectively carry out full power test.
Description
Technical field
The utility model relates to a kind of test unit of generator, particularly a kind of full power trial (FPT) device of direct-drive type megawatt-level permanent magnet synchronous generator.
Background technology
Direct drive type permanent magnetism synchronous wind power generator, it is a kind of wind power generating set by the wind wheel direct drive generator, also claim the gearless wind power generating set, this aerogenerator adopts multipolar generator directly to be connected the mode that drives with wind wheel, has removed this legacy device of gear case from.Owing to being easily to transship and the higher parts of spoilage at some gear box of megawatt-grade wind generating set at present, and the directly mode of driving of non-gear box can reduce the unit fault that causes owing to the gear case wear problem effectively, but Effective Raise system reliability of operation and life-span, reduce maintenance cost, thereby obtained the market favor.In addition, direct drive wind power system mainly adopts the total power Semiconductor Converting Technology, and this technology can make the speed adjustable range of wind wheel and generator expand to the rated speed of 0 %～150%, has improved the Wind Power Utilization scope.And the total power Semiconductor Converting Technology has good solution route to the low voltage crossing technology, has increased advantage for direct-drive aerogenerator further develops.The directly-drive permanent magnet wind generating system does not need electric excitation unit in addition, have advantages of lightweight, efficient is high, good reliability.Simultaneously, development along with Power Electronic Technique and permanent magnetic material, in the directly-drive permanent magnet wind generating system, account for the relatively high switching device of cost ratio (IGBT etc.) and permanent magnet, when its performance improves constantly, cost also constantly descends, and shows one's talent in the multi-speed exchanged constant frequency wind generator system so that the directly-drive permanent magnet wind generating system comforms, and has good development prospect.But also openly be not applicable to the full power trial (FPT) device of direct-drive type megawatt-level permanent magnet synchronous generator in the prior art, the full power trial (FPT) device that research and development are applicable to direct-drive type megawatt-level permanent magnet synchronous generator has important practical significance.
Summary of the invention
Technical problem to be solved in the utility model is for the deficiencies in the prior art, and the full power trial (FPT) device of a kind of reasonable in design, testing efficiency height direct-drive type megawatt-level permanent magnet synchronous generator effective, easy to use is provided.
Technical problem to be solved in the utility model is to realize by following technical scheme.The utility model is a kind of full power trial (FPT) device of direct-drive type megawatt-level permanent magnet synchronous generator, is characterized in:
This device comprises total power wind power frequency converter, dragging motor and dragging motor frequency converter;
Described total power wind power frequency converter is connected by the stator terminal of cable with the direct drive permanent magnetic synchronous generator, and the total power wind power frequency converter is connected to electrical network by cable again, with output electric energy feedback to electrical network;
The rotor-end of dragging motor is connected with the rotor-end of direct drive permanent magnetic synchronous generator by dragging motor side reducer casing, Hooks coupling universal coupling, joint flange, the stator of dragging motor is connected with the dragging motor frequency converter by cable, regulate its rotating speed by stator excitation, the dragging motor frequency converter is connected to electrical network by cable again;
Stator terminal at the direct drive permanent magnetic synchronous generator also is connected with side amount power quality analyzer, current transformer, voltage transformer (VT) and oscillograph;
Vibration transducer also is installed on the direct drive permanent magnetic synchronous generator, and the sensor terminal box of direct drive permanent magnetic synchronous generator and vibration transducer all are connected with the PLC module with monitoring by cable.
In the full power trial (FPT) device technique scheme of above-described direct-drive type megawatt-level permanent magnet synchronous generator: the tested direct drive permanent magnetic synchronous generator capacity of described dragging motor volume ratio is large; Described dragging motor is preferably can regulate the speed type motor.
In the full power trial (FPT) device technique scheme of above-described direct-drive type megawatt-level permanent magnet synchronous generator: described total power wind power frequency converter can also be connected with cooling device.Described cooling device can be the some of the utility model device, it also can be the cooling device that configures in addition, cool off for the total power wind power frequency converter, described cooling device can be disclosed any applicable cooling device of the present utility model in the prior art, comprises air-cooled, water-cooled or other type of cooling.
In the full power trial (FPT) device technique scheme of above-described direct-drive type megawatt-level permanent magnet synchronous generator: described total power wind power frequency converter, dragging motor frequency converter access electrical network after by isolating switch, isolating transformer.
The purpose that the utility model device is done full power trial (FPT) is mainly whether the parameters of testing generator meets designing requirement.The dragging motor that utilizes preferred rotating speed to regulate drives the rotor of direct drive permanent magnetic synchronous generator, and stator is connected to the total power wind power frequency converter, and the total power wind power frequency converter is connected to electrical network.Judge the performance of motor by series of experiments such as no-load test, short-circuit test, load tests, obtain the rotating speed of direct drive permanent magnetic synchronous generator by the total power wind power frequency converter, regulating the total power wind power frequency converter increases torque and comes output power so that the direct drive permanent magnetic synchronous generator progressively reaches full load condition, and whether observe each node line voltage, DC voltage, output power, frequency, stator current, the isoparametric curve of stator voltage normal.The cooling system of total power wind power frequency converter will work in the process of the test, whether the winding temperature that supervision gathers with PLC is in normal range, the registration that is installed in the vibration transducer on the generator changes the Vibration Condition of whether judging very greatly generator, come the various electrical quantitys of record analysis generator by equipment such as power quality analyzer, current transformer, voltage transformer (VT), oscillographs, such as terminal voltage, electric current, frequency etc.Can judge by these tests whether the characteristic of generator and various parameter reach designing requirement.
In the utility model, rotor and the dragging motor of direct drive permanent magnetic synchronous generator are linked together, regulate dragging motor and control the rotating speed of generator, the stator of generator is connected with the total power wind power frequency converter, the total power wind power frequency converter is connected to electrical network again, frequency converter can become to meet the electric energy that electrical network requires with the electric energy conversion of generator output, and the electric energy of generator output just can feed back to electrical network like this.For topmost parts generator, its performance directly affects the quality of electric energy, so before electrical network, must test every electrical quantity that generator is exported at electric energy feedback by the relevant equipment of relevant test utilization, also can judge the performance of generator and whether meet designing requirement simultaneously.
Compared with prior art, the utility model apparatus structure is reasonable in design, and is easy to use, can effectively carry out the total power test, and testing efficiency is high, and is effective.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model device;
Fig. 2 is a kind of connection block diagram of the utility model device.
Embodiment
Referring to accompanying drawing, further describe concrete implementer's case of the present utility model, so that those skilled in the art can further understand the utility model, and do not consist of the utility model Copyright law.
Described total power wind power frequency converter 3 is connected by the stator terminal of cable with direct drive permanent magnetic synchronous generator 4, and total power wind power frequency converter 3 is connected to electrical network by cable again, with output electric energy feedback to electrical network;
The rotor-end of dragging motor 1 is connected with the rotor-end of direct drive permanent magnetic synchronous generator 4 by dragging motor side reducer casing 2, Hooks coupling universal coupling, joint flange 5, the stator of dragging motor 1 is connected with dragging motor frequency converter 6 by cable, regulate its rotating speed by stator excitation, dragging motor frequency converter 6 is connected to electrical network by cable again;
Stator terminal at direct drive permanent magnetic synchronous generator 4 also is connected with side amount power quality analyzer, current transformer, voltage transformer (VT) and oscillograph;
Vibration transducer also is installed on direct drive permanent magnetic synchronous generator 4, and the sensor terminal box of direct drive permanent magnetic synchronous generator and vibration transducer all are connected with the PLC module with monitoring by cable.
1. test is prepared: tested generator should be in normal condition before the test, and wiring is correct, and structure, the working order of tested generator checked.The wiring of total power wind power frequency converter is correct, and communication is normal, and the frequency converter water-cooling system is normal, and the winding temperature that PLC gathers is normal, and dragging motor is adjusting rotary speed within the specific limits.
2. main experimental project:
2.1 no-load test
No-load test can be asked for no-load characteristic.Dragging motor rotor driven rotation during test gathers voltage corresponding to rotating speed point, frequency etc., makes rotating speed-voltage curve.Can check that by no-load test whether the motor wiring is correct, can also judge the motor saturation of magnetic path.
2.2 short-circuit test
Short-circuit test can be asked for short circuit curve.Threephase armature winding terminal short circuit during test, the rotation of dragging motor rotor driven, the rotating speed that begins to regulate dragging motor from zero rotating speed makes the steady-state shortcircuit current of generator increase to 1.2 times of ratings, by current transformer record short-circuit current, makes rotating speed-current curve simultaneously.
2.3 load test
The final purpose of load test is whether the various electrical quantitys of measuring generator meet desirable design load, such as terminal voltage, frequency, output power, and the Changing Pattern of terminal voltage etc. when load current changes.Utilize dragging motor that rotating speed is reached rated speed, regulate torque by the total power wind power frequency converter, so that generator progressively reaches full load condition, utilize related software and equipment to observe the variation of the electrical quantitys such as each node output power, voltage, electric current in the loading procedure, draw related data and design load compares.
2.4 other tests
Other tests also comprise mensuration, direct current resistance mensuration, withstand voltage test, turn-to-turn impact voltage-withstand test, vibration-testing, noise test, rated voltage regulation, overcurrent test, overload test, overspeed test, heat run, the mensuration of efficient, the mensuration of voltage waveform dextrorotation sex distortion rate, starting resistance square mensuration, shell protection grade test, damp heat test, salt-fog test, the mould test of winding under actual cold state of insulation resistance, these tests can be selected voluntarily, mainly are the tests to generator performance.
Claims (4)
1. the full power trial (FPT) device of a direct-drive type megawatt-level permanent magnet synchronous generator is characterized in that:
This device comprises total power wind power frequency converter, dragging motor and dragging motor frequency converter;
Described total power wind power frequency converter is connected by the stator terminal of cable with the direct drive permanent magnetic synchronous generator, and the total power wind power frequency converter is connected to electrical network by cable again;
The rotor-end of dragging motor is connected with the rotor-end of direct drive permanent magnetic synchronous generator by dragging motor side reducer casing, Hooks coupling universal coupling, joint flange, the stator of dragging motor is connected with the dragging motor frequency converter by cable, regulate its rotating speed by stator excitation, the dragging motor frequency converter is connected to electrical network by cable again;
Stator terminal at the direct drive permanent magnetic synchronous generator also is connected with side amount power quality analyzer, current transformer, voltage transformer (VT) and oscillograph;
Vibration transducer also is installed on the direct drive permanent magnetic synchronous generator, and the sensor terminal box of direct drive permanent magnetic synchronous generator and vibration transducer all are connected with the PLC module with monitoring by cable.
2. the full power trial (FPT) device of direct-drive type megawatt-level permanent magnet synchronous generator according to claim 1, it is characterized in that: the tested direct drive permanent magnetic synchronous generator capacity of described dragging motor volume ratio is large, and dragging motor is for can regulate the speed type motor.
3. the full power trial (FPT) device of direct-drive type megawatt-level permanent magnet synchronous generator according to claim 1, it is characterized in that: described total power wind power frequency converter also is connected with cooling device.
4. the full power trial (FPT) device of direct-drive type megawatt-level permanent magnet synchronous generator according to claim 1 is characterized in that: total power wind power frequency converter, dragging motor frequency converter access electrical network after by isolating switch, isolating transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220423430 CN202735484U (en) | 2012-08-24 | 2012-08-24 | Full power test device of direct-drive type megawatt-class permanent magnet synchronous generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220423430 CN202735484U (en) | 2012-08-24 | 2012-08-24 | Full power test device of direct-drive type megawatt-class permanent magnet synchronous generator |
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|---|---|
| CN202735484U true CN202735484U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220423430 Expired - Fee Related CN202735484U (en) | 2012-08-24 | 2012-08-24 | Full power test device of direct-drive type megawatt-class permanent magnet synchronous generator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535928A (en) * | 2015-02-02 | 2015-04-22 | 华北电力大学 | Simulator stand and state monitoring device for direct-driven wind turbine generator |
| CN108981823A (en) * | 2018-08-28 | 2018-12-11 | 华北电力大学（保定） | It is a kind of for monitoring the multi-parameter integrated sensor of generator armature winding |
-
2012
- 2012-08-24 CN CN 201220423430 patent/CN202735484U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535928A (en) * | 2015-02-02 | 2015-04-22 | 华北电力大学 | Simulator stand and state monitoring device for direct-driven wind turbine generator |
| CN104535928B (en) * | 2015-02-02 | 2019-02-01 | 华北电力大学 | Direct wind-driven generator simulator stand and state monitoring apparatus |
| CN108981823A (en) * | 2018-08-28 | 2018-12-11 | 华北电力大学（保定） | It is a kind of for monitoring the multi-parameter integrated sensor of generator armature winding |
| CN108981823B (en) * | 2018-08-28 | 2020-12-29 | 华北电力大学（保定） | Multi-parameter integrated sensor for monitoring generator armature winding |
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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: 20130213 Termination date: 20140824 |
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| EXPY | Termination of patent right or utility model |