CN202133730U - Testing device for low voltage ride-through compensation system of wind turbines - Google Patents
Testing device for low voltage ride-through compensation system of wind turbines Download PDFInfo
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- CN202133730U CN202133730U CN201120222115U CN201120222115U CN202133730U CN 202133730 U CN202133730 U CN 202133730U CN 201120222115 U CN201120222115 U CN 201120222115U CN 201120222115 U CN201120222115 U CN 201120222115U CN 202133730 U CN202133730 U CN 202133730U
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- divider resistance
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Abstract
A testing device for a low voltage ride-through compensation system of wind turbines, which belongs to the technical field of electrical automation, comprises: a three-phase voltage regulator, a voltage dip generator, an asynchronous motor set and a frequency converter, wherein the three-phase voltage regulator, the voltage dip generator, a device to be tested, the asynchronous motor set and the frequency converter are connected in series and form a loop, and an input end of the three-phase voltage regulator is connected with a 380V AC (Alternating Current). By simulating special operating characteristics of the wind turbines, the testing device of the utility model realizes testing for performance of the low voltage ride-through compensation system.
Description
Technical field
The utility model relates to the device in a kind of Electric automation technology field, specifically is that a kind of wind-powered electricity generation unit low-voltage is passed through the proving installation of bucking-out system.
Background technology
According to the requirement of " the State Grid Corporation of China wind energy turbine set inserts electric power network technique regulation (revised edition) ", when wind farm grid-connected point voltage was in voltage profile line shown in Figure 2 and above zone, an interior wind-powered electricity generation unit must guarantee uninterruptedly to be incorporated into the power networks; Have only when being incorporated into the power networks point voltage when the voltage profile line is following, the wind-powered electricity generation unit just allows to cut out from electrical network.And a lot of wind-powered electricity generation units of China do not possess such low voltage ride-through capability at present, need transform.The method of transforming generally is divided into two kinds, and a kind of is to start with from the control of wind-powered electricity generation unit itself, and it is proper that this method is used for newly-built wind energy turbine set; Another kind of then be to remove the influence of electric voltage dropping to the wind-powered electricity generation unit from external solution: the wind-powered electricity generation unit and and the site between insert low-voltage and pass through compensation system; Like SVC STATCOM, dynamic electric voltage regulator DVR etc., guarantee that the terminal voltage of wind-powered electricity generation unit keeps constant when system voltage changes.
Because the wind-powered electricity generation unit is as the load of these compensation systems; Its operation characteristic is more special; Design experimental enviroment like the actual motion environmental classes with compensation system and test specific place of the performance need of these compensation systems and bigger investment; Even build up, for the research and development process and the inconvenience of compensation system.
The utility model content
The utility model provides a kind of wind-powered electricity generation unit low-voltage to pass through the proving installation of bucking-out system to the above-mentioned deficiency that prior art exists, and capacity is little, invest for a short time, and it is easy to implement, and can simulate the operation characteristic of wind-powered electricity generation unit fully, the performance of comprehensive test compensation system.
The utility model is realized through following technical scheme; The utility model comprises: three-phase regulator, voltage falling generator, asynchronous machine group and frequency converter; Wherein: three-phase regulator, voltage falling generator, device to be measured, asynchronous machine group and frequency converter series connection also constitute loop, and the input end of three-phase regulator links to each other with the 380V alternating current.
Described voltage falling generator comprises: two three-phase air switches and two divider resistances; Wherein: connect the successively input end of first divider resistance and device to be measured of the output terminal of three-phase regulator; The first three-phase air switch is parallel to the two ends of first divider resistance, and the tie point of first divider resistance and device to be measured is connected in parallel to second divider resistance through the second three-phase air switch.
Described asynchronous machine group is made up of two asynchronous machines that connect through belt pulley, and first asynchronous machine that wherein links to each other with frequency converter works in electric motor state, and second asynchronous machine that links to each other with device to be measured works in the generator state.
Described first divider resistance and second divider resistance are the three-phase adjustable resistance.
In actual moving process, can change the amplitude of compensation system input terminal voltage through the resistance that changes divider resistance, thereby the different amplitudes of simulation system voltage fall operating mode.Output frequency through changing T2 can change the motor ground power input in the asynchronous machine group, thereby changes the electric power of generator output in the asynchronous machine group, thereby simulates output power and change in current under the different wind conditions of wind-powered electricity generation unit.
Description of drawings
Fig. 1 is the utility model synoptic diagram.
Fig. 2 is the regulation curve map that the wind energy turbine set low-voltage is passed through requirement.
The synoptic diagram of K1 and K2 when Fig. 3 is balance and uneven falling.
Fig. 4 is the current waveform (ch1) and the voltage waveform (ch2) of embodiment TE1 input point when generating primary voltage and falling.
Embodiment
Embodiment in the face of the utility model elaborates down; Present embodiment is being to implement under the prerequisite with the utility model technical scheme; Provided detailed embodiment and concrete operating process, but the protection domain of the utility model is not limited to following embodiment.
Embodiment
As shown in Figure 1; Present embodiment comprises: three-phase regulator T1, voltage falling generator, asynchronous machine group AM and frequency converter T2; Wherein: device TE1 to be measured connects with three-phase regulator T1, voltage falling generator, asynchronous machine group AM and frequency converter T2 and constitutes loop, and the input end of three-phase regulator T1 links to each other with the 380V alternating current.
Described voltage falling generator comprises: two three-phase air switch K1, K2 and two divider resistance R1, R2; Wherein: connect the successively input end of the first divider resistance R1 and device TE1 to be measured of the output terminal of three-phase regulator T1; The first three-phase air switch K1 is parallel to the two ends of R1, and the tie point of R1 and TE1 is connected in parallel to the second divider resistance R2 through the second three-phase air switch K2.
The described first divider resistance R1 and the second divider resistance R2 are three-phase resistance, and resistance is adjustable.
Described asynchronous machine group AM is made up of two asynchronous machines; The first asynchronous machine M that wherein links to each other with frequency converter T2 works in electric motor state; The second asynchronous machine MG that is connected with device TE1 to be measured works in the generator state, and the axle of M and MG is connected through belt pulley.
Like Fig. 2-shown in Figure 4, present embodiment is in test process: at first closed K2, break off K1 and can make the TE1 input terminal voltage occur falling.Closed K1 breaks off K2, and then the recovery of TE1 input terminal voltage is normal; The time of twice action of two switches of control is the time span that may command is fallen.
In the described voltage falling generator; Can change the amplitude of electric voltage dropping through the resistance ratio that changes resistance R 1 and R2; The output frequency of regulating T2 can change the MG output power; The number of phases that changes K1 and K2 can be made imbalance and falls, and is depicted as three-phase equilibrium like Fig. 3 (a) and falls, and Fig. 3 (b) is depicted as imbalance and falls.
Claims (4)
1. a wind-powered electricity generation unit low-voltage is passed through the proving installation of bucking-out system; It is characterized in that; Comprise: three-phase regulator, voltage falling generator, asynchronous machine group and frequency converter; Wherein: three-phase regulator, voltage falling generator, device to be measured, asynchronous machine group and frequency converter series connection also constitute loop, and the input end of three-phase regulator links to each other with the 380V alternating current.
2. wind-powered electricity generation unit low-voltage according to claim 1 is passed through the proving installation of bucking-out system; It is characterized in that; Described voltage falling generator comprises: two three-phase air switches and two divider resistances; Wherein: connect the successively input end of first divider resistance and device to be measured of the output terminal of three-phase regulator, the first three-phase air switch is parallel to the two ends of first divider resistance, and the tie point of first divider resistance and device to be measured is connected in parallel to second divider resistance through the second three-phase air switch.
3. wind-powered electricity generation unit low-voltage according to claim 1 is passed through the proving installation of bucking-out system; It is characterized in that; Described asynchronous machine group is made up of two asynchronous machines that connect through belt pulley; First asynchronous machine that wherein links to each other with frequency converter works in electric motor state, and second asynchronous machine that links to each other with device to be measured works in the generator state.
4. voltage falling generator according to claim 2 is characterized in that, described first divider resistance and second divider resistance are the three-phase adjustable resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120222115U CN202133730U (en) | 2011-06-28 | 2011-06-28 | Testing device for low voltage ride-through compensation system of wind turbines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120222115U CN202133730U (en) | 2011-06-28 | 2011-06-28 | Testing device for low voltage ride-through compensation system of wind turbines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202133730U true CN202133730U (en) | 2012-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201120222115U Expired - Fee Related CN202133730U (en) | 2011-06-28 | 2011-06-28 | Testing device for low voltage ride-through compensation system of wind turbines |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102981121A (en) * | 2012-08-24 | 2013-03-20 | 西北电网有限公司 | Wind turbine generator set mobile type low voltage riding through testing apparatus safety chain and implementation method |
| CN103227476A (en) * | 2013-03-21 | 2013-07-31 | 南京南瑞继保电气有限公司 | Comprehensive test system for low voltage ride through or low voltage support |
| CN104698306A (en) * | 2013-12-06 | 2015-06-10 | 国家电网公司 | Custom power equipment detection circuit and equipment |
| CN105548741A (en) * | 2015-12-04 | 2016-05-04 | 中国电力科学研究院 | Method used for detecting low voltage operation capability of reactive power compensator in wind power field |
| CN106532765A (en) * | 2016-10-20 | 2017-03-22 | 国网福建省电力有限公司 | Wind power generator set low voltage ride through capability testing method considering phase jump |
-
2011
- 2011-06-28 CN CN201120222115U patent/CN202133730U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102981121A (en) * | 2012-08-24 | 2013-03-20 | 西北电网有限公司 | Wind turbine generator set mobile type low voltage riding through testing apparatus safety chain and implementation method |
| CN102981121B (en) * | 2012-08-24 | 2015-09-23 | 西北电网有限公司 | Wind turbine generator set mobile type low voltage crossing test unit theft-resistant link chain and implementation method |
| CN103227476A (en) * | 2013-03-21 | 2013-07-31 | 南京南瑞继保电气有限公司 | Comprehensive test system for low voltage ride through or low voltage support |
| CN104698306A (en) * | 2013-12-06 | 2015-06-10 | 国家电网公司 | Custom power equipment detection circuit and equipment |
| CN104698306B (en) * | 2013-12-06 | 2017-09-12 | 国家电网公司 | Custom power equipment detects circuit and equipment |
| CN105548741A (en) * | 2015-12-04 | 2016-05-04 | 中国电力科学研究院 | Method used for detecting low voltage operation capability of reactive power compensator in wind power field |
| CN105548741B (en) * | 2015-12-04 | 2019-06-04 | 中国电力科学研究院 | A kind of detection method for Reactive Compensation in Wind Farm device subnormal voltage operation ability |
| CN106532765A (en) * | 2016-10-20 | 2017-03-22 | 国网福建省电力有限公司 | Wind power generator set low voltage ride through capability testing method considering phase jump |
| CN106532765B (en) * | 2016-10-20 | 2019-02-22 | 国网福建省电力有限公司 | Consider the low voltage ride through capacity of wind generating set test method of phase hit |
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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: 20120201 Termination date: 20200628 |
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| CF01 | Termination of patent right due to non-payment of annual fee |