CN105652200A - Controllable voltage fluctuation and flicker generation device - Google Patents
Controllable voltage fluctuation and flicker generation device Download PDFInfo
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- CN105652200A CN105652200A CN201410614169.6A CN201410614169A CN105652200A CN 105652200 A CN105652200 A CN 105652200A CN 201410614169 A CN201410614169 A CN 201410614169A CN 105652200 A CN105652200 A CN 105652200A
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Abstract
The invention relates to a controllable voltage fluctuation and flicker generation device. The device comprises a converter built based on a power semiconductor switching element, the input end of the converter is connected with an alternating-current power supply, and the output end produces a needed voltage fluctuation and flicker controllable power supply. The converter comprises a controller, a rectifier, a direct-current link and an inverter. The controller makes the inverter produce a needed controllable power supply which can be used in wind turbine voltage fluctuation and flicker adaptability test after being filtered by the filter. The device can flexibly produce voltage sources of different flicker limits to expand the test scope, enrich the test data and shorten the experimental period.
Description
Technical field
The present invention relates to a kind of test device, in particular, relate to a kind of for Wind turbines voltage fluctuation and flicker adaptive testing device.
Background technology
Along with high speed development and the installed capacity of wind-driven power of Wind Power Generation Industry constantly promote in the accounting of State Grid's structure, electrical network access conditions and the grid adaptability of grid-connected wind power unit are proposed strict demand by increasing country. The low voltage crossing of Wind turbines, voltage adaptation, frequency adaptability, harmonic wave adaptability, voltage unbalance factor adaptability, voltage fluctuation and flicker adaptability are proposed and are distinctly claimed by national standard " GB/T19963-2011 wind energy turbine set accesses power system technology and specifies " respectively.
The voltage fluctuation and flicker adaptability of Wind turbines typically occurs under electrical network abnormal conditions. For deep test, it is necessary to develop a kind of controlled power generator, build the Wind turbines test system that can be repeatedly performed experiment, compare and improve Wind turbines voltage fluctuation and flicker adaptability.
Summary of the invention
The technical problem to be solved in the present invention is in that, overcomes the defect that existing electrical network not easily regulates, it is provided that a kind of controllable voltage fluctuation and flicker generating apparatus, the fluctuation of this controllable voltage and flicker generating apparatus can be used for Wind turbines test.
The present invention includes but not limited to following scheme.
A kind of controllable voltage fluctuation and flicker generating apparatus, it includes the current transformer built based on power semiconductor switch, the input of described current transformer connects alternating current power supply, and the outfan of described current transformer produces required voltage fluctuation and flicker controllable electric power and is connected to Wind turbines.
Preferably, described power semiconductor switch is igbt.
Preferably, the fluctuation of described controllable voltage and flicker generating apparatus are used as Wind turbines voltage fluctuation and flicker adaptive testing device.
Preferably, described current transformer includes controller and the commutator being sequentially connected with, DC link, inverter, described controller gathers described commutator, the voltage of described inverter, current signal, described commutator is connected to described alternating current power supply, the function of stable DC link voltage is realized under the control of described controller, described inverter is connected to described Wind turbines, realizes controllable electric power function under described controller controls.
Preferably, described inverter produces required controllable electric power, after filtering for the voltage fluctuation and flicker adaptive testing of described Wind turbines after device filtering.
Preferably, described commutator includes the first bridge circuit and the input filter that are built by igbt;Described DC link includes the DC capacitor and the equalizing resistance that are serially connected in the outfan of described first bridge circuit; Described inverter includes the second bridge circuit and the output filter that are built by igbt; The input of described second bridge circuit connects the outfan of described first bridge circuit.
Preferably, described input filter includes input reactance device and input capacitance group; Described input reactance device correspondence is serially connected in each phase input of described first bridge circuit; Described input capacitance group is connected in parallel on each phase input of described alternating current power supply.
Preferably, described output filter includes output reactance device and output capacitance group; Described output reactance device is serially connected in each phase output terminal of described second bridge circuit; Described output capacitance group is connected in parallel between described output reactance device and described Wind turbines.
Preferably, described controller includes voltage x current acquisition system, controls pulse computing system and controls pulse output system, and described System of voltage acquisition gathers the voltage of described alternating current power supply and described DC link; Described current acquisition system gathers each phase current of described first bridge circuit and described second bridge circuit; Described pulse computing system calculates the switch order of described igbt according to the signal of described System of voltage acquisition and described current acquisition system; The turn-on and turn-off of igbt described in described control pulse output system drive.
The present invention can produce the voltage source of different flickering limit value flexibly, extends test scope, abundant test data, shortens experimental period.
Accompanying drawing explanation
Fig. 1 is the population structure schematic diagram of the controllable voltage fluctuation according to an embodiment of the invention and flicker generating apparatus.
Fig. 2 further illustrates an example arrangement of current transformer on the basis of Fig. 1.
Fig. 3 is the structural representation of the current transformer of the controllable voltage fluctuation according to an embodiment of the invention and flicker generating apparatus.
Detailed description of the invention
Principles of the invention and illustrative embodiments are described referring to Fig. 1 to Fig. 3.
The present invention relates to a kind of controllable voltage fluctuation and flicker generating apparatus. As it is shown in figure 1, this generating means includes the current transformer 2 built based on power semiconductor switch, this current transformer input connects alternating current power supply 1, and outfan produces required voltage fluctuation and flicker controllable electric power, and then may be connected to Wind turbines 3.
In a concrete example, the present invention provides a kind of Wind turbines voltage fluctuation and flicker adaptive testing device, it includes the current transformer 2 built based on igbt, and this current transformer 2 input connects alternating current power supply 1, and outfan connects Wind turbines 3.
As in figure 2 it is shown, in one example, described current transformer 2 includes controller 21 and the commutator 22 being sequentially connected with, DC link 23, inverter 24. Described controller 21 gathers described commutator 22, the voltage of described inverter 24, current signal. Described commutator 22 connects alternating current power supply 1, realizes stable DC link 23 voltage function under described controller 21 controls. Described inverter 24 connects Wind turbines, realizes controllable electric power function under described controller controls.
Preferably, inverter 24 produces required controllable electric power, can be used for the voltage fluctuation and flicker adaptive testing of Wind turbines 3 after filtering after device filtering.
The present invention can produce the voltage source of different flickering limit value flexibly, extends test scope, abundant test data, shortens experimental period.
Fig. 3 is the structural representation of the current transformer 2 of the controllable voltage fluctuation according to an embodiment of the invention and flicker generating apparatus.
As it is shown on figure 3, described commutator 22 includes by igbt S1-S6The first bridge circuit built and input filter; Described DC link 23 includes the DC capacitor C being serially connected in described bridge circuit outfandWith equalizing resistance Rd; Described inverter 24 includes by igbt S '1-S��6The second bridge circuit built and output filter; Described second bridge circuit input connects described first bridge circuit outfan.
In the present invention, described input filter includes input reactance device L1-L3With input capacitance group C1-C3; Described input reactance device L1-L3Correspondence is serially connected in the described first each phase input of bridge circuit; Described input capacitance group C1-C3It is connected in parallel on each phase input of described alternating current power supply. Described output filter includes output reactance device L '1-L��3With output capacitance group C '1-C��3; Described output reactance device L '1-L��3It is serially connected in the described second each phase output terminal of bridge circuit; Described output capacitance group C '1-C��3It is connected in parallel on described output reactance device L '1-L��3And between described Wind turbines 3.
Controllable voltage in the present invention fluctuates and in flicker generating apparatus, and described controller 21 includes voltage, current acquisition system, control pulse computing system and controls pulse output system. Described System of voltage acquisition gathers described alternating current power supply and described DC tache voltage; Described current acquisition system gathers described first bridge circuit and each phase current of the second bridge circuit; Described pulse computing system calculates described igbt switch order according to the signal of described System of voltage acquisition and current acquisition system; Igbt turn-on and turn-off described in described control pulse output system drive.
The controllable voltage fluctuation of the present invention and flicker generating apparatus, its beneficial effect includes:
1, adopting the current transformer built based on igbt, power density is big, and volume is little, and cost is low, and can bear bigger dynamic impulsion, thus alleviating the experimental system requirement to net capacity;
2, the controllable electric power of different voltage fluctuation and flicker limit value can be produced easily and flexibly, extend test scope, abundant test data, shorten test period;
3, can provide support for contrast and improvement Wind turbines voltage fluctuation and flicker adaptability.
The preferred embodiment of the present invention is described, it is understood, however, that described above is merely illustrative of above with reference to accompanying drawing. The present invention under the premise without departing from the spirit and scope of the present invention, can be made various modifications and variations by those skilled in the art. Protection scope of the present invention is limited by the accompanying claims.
Claims (9)
1. a controllable voltage fluctuation and flicker generating apparatus, it includes the current transformer built based on power semiconductor switch, the input of described current transformer connects alternating current power supply, and the outfan of described current transformer produces required voltage fluctuation and flicker controllable electric power and is connected to Wind turbines.
2. device according to claim 1, it is characterised in that
Described power semiconductor switch is igbt.
3. device according to claim 1, it is characterised in that
The fluctuation of described controllable voltage and flicker generating apparatus are used as Wind turbines voltage fluctuation and flicker adaptive testing device.
4. device according to any one of claim 1 to 3, it is characterised in that
Described current transformer includes controller and the commutator being sequentially connected with, DC link, inverter, described controller gathers described commutator, the voltage of described inverter, current signal, described commutator is connected to described alternating current power supply, the function of stable DC link voltage is realized under the control of described controller, described inverter is connected to described Wind turbines, realizes controllable electric power function under described controller controls.
5. device according to claim 4, it is characterised in that
Described inverter produces required controllable electric power, after filtering for the voltage fluctuation and flicker adaptive testing of described Wind turbines after device filtering.
6. device according to claim 4, it is characterised in that
Described commutator includes the first bridge circuit and the input filter that are built by igbt; Described DC link includes the DC capacitor and the equalizing resistance that are serially connected in the outfan of described first bridge circuit; Described inverter includes the second bridge circuit and the output filter that are built by igbt; The input of described second bridge circuit connects the outfan of described first bridge circuit.
7. device according to claim 6, it is characterised in that
Described input filter includes input reactance device and input capacitance group; Described input reactance device correspondence is serially connected in each phase input of described first bridge circuit; Described input capacitance group is connected in parallel on each phase input of described alternating current power supply.
8. device according to claim 6, it is characterised in that
Described output filter includes output reactance device and output capacitance group; Described output reactance device is serially connected in each phase output terminal of described second bridge circuit; Described output capacitance group is connected in parallel between described output reactance device and described Wind turbines.
9. device according to claim 6, it is characterised in that
Described controller includes voltage x current acquisition system, controls pulse computing system and controls pulse output system, and described System of voltage acquisition gathers the voltage of described alternating current power supply and described DC link; Described current acquisition system gathers each phase current of described first bridge circuit and described second bridge circuit; Described pulse computing system calculates the switch order of described igbt according to the signal of described System of voltage acquisition and described current acquisition system; The turn-on and turn-off of igbt described in described control pulse output system drive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410614169.6A CN105652200A (en) | 2014-11-04 | 2014-11-04 | Controllable voltage fluctuation and flicker generation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410614169.6A CN105652200A (en) | 2014-11-04 | 2014-11-04 | Controllable voltage fluctuation and flicker generation device |
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| CN105652200A true CN105652200A (en) | 2016-06-08 |
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| CN201410614169.6A Pending CN105652200A (en) | 2014-11-04 | 2014-11-04 | Controllable voltage fluctuation and flicker generation device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061473A (en) * | 2018-09-26 | 2018-12-21 | 云南电网有限责任公司电力科学研究院 | A kind of Wind turbines master control system grid adaptability filed detection system and method |
| CN109193673A (en) * | 2018-10-24 | 2019-01-11 | 云南电网有限责任公司电力科学研究院 | A kind of grid adaptability detection platform voltage fluctuation and flickering control method |
| CN111812540A (en) * | 2020-07-21 | 2020-10-23 | 广州海关技术中心 | Load cabinet for harmonic wave and scintillation test |
| CN113466694A (en) * | 2021-07-02 | 2021-10-01 | 中国华能集团清洁能源技术研究院有限公司 | High voltage ride through testing device and testing method for flexible wind turbine generator |
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| CN101871997A (en) * | 2010-06-18 | 2010-10-27 | 深圳市禾望电气有限公司 | Device for testing power grid adaptability of wind generator set |
| US20130033268A1 (en) * | 2010-02-02 | 2013-02-07 | Vestas Wind Systems A/S | Test system for wind turbine dump load |
| CN203164379U (en) * | 2013-02-27 | 2013-08-28 | 中国电力科学研究院 | Movable wind turbine electric-grid adaptability test system |
| CN103278717A (en) * | 2013-05-24 | 2013-09-04 | 北京荣华恒信开关技术有限公司 | New energy integrated grid-connected testing device |
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2014
- 2014-11-04 CN CN201410614169.6A patent/CN105652200A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130033268A1 (en) * | 2010-02-02 | 2013-02-07 | Vestas Wind Systems A/S | Test system for wind turbine dump load |
| CN101871997A (en) * | 2010-06-18 | 2010-10-27 | 深圳市禾望电气有限公司 | Device for testing power grid adaptability of wind generator set |
| CN203164379U (en) * | 2013-02-27 | 2013-08-28 | 中国电力科学研究院 | Movable wind turbine electric-grid adaptability test system |
| CN103278717A (en) * | 2013-05-24 | 2013-09-04 | 北京荣华恒信开关技术有限公司 | New energy integrated grid-connected testing device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061473A (en) * | 2018-09-26 | 2018-12-21 | 云南电网有限责任公司电力科学研究院 | A kind of Wind turbines master control system grid adaptability filed detection system and method |
| CN109061473B (en) * | 2018-09-26 | 2020-11-03 | 云南电网有限责任公司电力科学研究院 | Wind turbine main control system power grid adaptability field detection system and method |
| CN109193673A (en) * | 2018-10-24 | 2019-01-11 | 云南电网有限责任公司电力科学研究院 | A kind of grid adaptability detection platform voltage fluctuation and flickering control method |
| CN109193673B (en) * | 2018-10-24 | 2021-07-27 | 云南电网有限责任公司电力科学研究院 | A grid adaptive detection platform voltage fluctuation and flicker control method |
| CN111812540A (en) * | 2020-07-21 | 2020-10-23 | 广州海关技术中心 | Load cabinet for harmonic wave and scintillation test |
| CN113466694A (en) * | 2021-07-02 | 2021-10-01 | 中国华能集团清洁能源技术研究院有限公司 | High voltage ride through testing device and testing method for flexible wind turbine generator |
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Application publication date: 20160608 |