CN201732150U - Device for testing adaptability to power grid for wind turbine generator set - Google Patents
Device for testing adaptability to power grid for wind turbine generator set Download PDFInfo
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- CN201732150U CN201732150U CN 201020233650 CN201020233650U CN201732150U CN 201732150 U CN201732150 U CN 201732150U CN 201020233650 CN201020233650 CN 201020233650 CN 201020233650 U CN201020233650 U CN 201020233650U CN 201732150 U CN201732150 U CN 201732150U
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Abstract
The utility model relates to a device for testing the adaptability to a power grid for a wind turbine generator set, which comprises a current transformer constructed on the basis of a power semiconductor switch device, wherein the input end of the current transformer is connected with a three-phase power supply, and the output end of the current transformer is connected with the wind turbine generator set. The device for testing the adaptability to the power grid for the wind turbine generator set adopts the current transformer constructed on the basis of the power semiconductor switch device, thereby having the advantages of large power density, small volume and low cost, being capable of bearing most of dynamic impact caused by the wind turbine generator set during the fault experimental period of the power grid, further relieving the requirements of an experimental system for the capacity of the power grid, being capable of realizing stepless regulation of voltage and frequency, further conveniently and flexibly simulating various faults of the power grid, expanding the testing range, enriching test data, reducing the experimental period, being capable of simulating various initial states of the voltage of the power grid before the fault testing of the power grid, and further realizing the purpose of completely testing the data of the wind turbine generator set during the faults under various states of the power grid.
Description
Technical field
The utility model relates to a kind of proving installation, more particularly, relates to a kind of proving installation that is used for testing wind power generation unit grid adaptability.
Background technology
Along with the high speed development and the wind-powered electricity generation installed capacity of wind-powered electricity generation industry constantly promotes in the ratio of State Grid's structure, more and more countries has proposed strict demand to the electrical network access conditions and the grid adaptability of grid type wind power generating set., reach low pressure and pass through performance (Low Voltage Ride Through is called for short LVRT) etc. the deviation of line voltage, frequency, the adaptation of fluctuation comprising wind power generating set.Low pressure pass through performance be meant connection electrical network break down cause the wind energy turbine set electric voltage dropping after, wind power generating set keeps uninterruptedly being incorporated into the power networks, thereby avoids the excision of wind energy turbine set to badly influence the ability of network system operation stability.
The grid adaptability of wind power generating set (particularly low pressure is passed through performance) generally will show at the electrical network Shi Caineng that breaks down, but electrical network breaks down, and particularly the chance of catastrophic failure is less.In order deeply to test, compare and improve the grid adaptability (contain low pressure and pass through performance) of wind power generating set, need to make up the power grid adaptability of wind generator set test macro that can experimentize repeatedly.As shown in Figure 1, the power grid adaptability of wind generator set test macro generally is made up of three-phase supply 1 (electrical network or threephase alternator etc.), electric network fault analogue means 2 and wind power generating set 3 (or its key subsystem) to be measured.
As shown in Figure 2, at present, the electric network fault analogue means in the power grid adaptability of wind generator set test macro generally is made up of reactance network and switch, wherein X1 is the series connection current-limiting reactor, X2 is variable short-circuit reactance, and X3 is circuit simulation reactance, and S is controlled switch.The switch S closure, electric network fault analogue means 2 simulation grid short circuits in faults such as wind power generating set end to be measured cause that line voltage falls, can carry out the grid adaptability test to wind power generating set to be measured under simulated conditions such as electric network fault.
There is following defective in above-mentioned existing electric network fault analogue means:
1, device volume is huge, the cost height, and net capacity had higher requirements, regulate inconvenience, experimental period is long;
2, owing to need the degree of depth of simulation electrical network to fall, require the series connection current-limiting reactor X1 in the reactance network relatively large, bigger to the initial launch state and the influence of the test parameter in the electric network fault simulation process of wind power generating set;
3, the line voltage original state before the electric network fault test can not be regulated substantially, so be difficult to the partial data of testing wind power generation unit when breaking down under the various states of electrical network.
The utility model content
The technical problems to be solved in the utility model is, overcomes the above-mentioned defective of existing electric network fault analogue means, and a kind of device for testing power grid adaptability of wind generator set is provided.
The technical scheme that its technical matters that solves the utility model adopts is: construct a kind of device for testing power grid adaptability of wind generator set, it is characterized in that, comprise the current transformer that makes up based on power semiconductor switch, this current transformer input end connects three-phase supply, output terminal connects wind power generating set.
In device for testing power grid adaptability of wind generator set of the present utility model, described current transformer comprises controller and the rectifier that is connected successively, DC link, inverter, described controller is connected with described rectifier, described inverter signal, described rectifier connects three-phase supply, and described inverter connects wind power generating set.
In device for testing power grid adaptability of wind generator set of the present utility model, described rectifier comprises first bridge circuit be made up of power semiconductor switch, is serially connected in each reactance of going up mutually of this first bridge circuit input end; Described DC link comprises the dc capacitor that is serially connected in described bridge circuit output terminal; Described inverter comprises second bridge circuit be made up of power semiconductor switch, is serially connected in each reactance of going up mutually of this second bridge circuit output terminal; The described second bridge circuit input end connects the described first bridge circuit output terminal.
In device for testing power grid adaptability of wind generator set of the present utility model, described rectifier comprises the input capacitance group, described inverter comprises the output capacitance group, the electric capacity correspondence of described input capacitance group is connected between the described current transformer input end two-phase, and the electric capacity correspondence of described output capacitance group is connected between the described current transformer output terminal two-phase.
In device for testing power grid adaptability of wind generator set of the present utility model, described rectifier comprises the 3rd bridge circuit be made up of power semiconductor switch, is serially connected in each reactance of going up mutually of the 3rd bridge circuit input end; Described DC link comprises serial connection first dc capacitor and second dc capacitor that is serially connected in described bridge circuit output terminal, and the series side of this first dc capacitor and second dc capacitor is connected the three-phase supply center line; Described current transformer comprises the 4th bridge circuit be made up of power semiconductor switch, is serially connected in each reactance of going up mutually of the 4th bridge circuit output terminal; Described the 4th bridge circuit input end connects described the 3rd bridge circuit output terminal.
In device for testing power grid adaptability of wind generator set of the present utility model, described rectifier comprises the input capacitance group, described adverse current device comprises the output capacitance group, the electric capacity correspondence of described input capacitance group is connected between described current transformer input end each and the three-phase supply center line, and the electric capacity correspondence of described output capacitance group is connected between described current transformer output terminal and the three-phase supply center line.
In device for testing power grid adaptability of wind generator set of the present utility model, described current transformer comprises ac-to-ac converter and controller, described ac-to-ac converter connects three-phase supply and wind power generating set, and described controller is connected with described ac-to-ac converter signal.
In device for testing power grid adaptability of wind generator set of the present utility model, described ac-to-ac converter comprises matrix converter, input reactance group and output reactance group, corresponding respectively each the phase input end that is serially connected in this matrix converter of the reactance of described input reactance group, corresponding respectively each phase output terminal that is serially connected in this matrix converter of the reactance of described output reactance group.
In device for testing power grid adaptability of wind generator set of the present utility model, described current transformer comprises input capacitance group and output capacitance group, the electric capacity of described input capacitance group is connected between the input end two-phase of described ac-to-ac converter, and the electric capacity of described output capacitance group is connected between the output terminal two-phase of described ac-to-ac converter.
In device for testing power grid adaptability of wind generator set of the present utility model, described power semiconductor switch is an igbt, gate level turn-off thyristor, one of integrated gate commutated thyristor or its combination.
Implement device for testing power grid adaptability of wind generator set of the present utility model, compared with the prior art, its beneficial effect is:
1. adopt the current transformer that makes up based on power semiconductor switch, power density is big, volume is little, cost is low, and can bear most of dynamic impulsion that grid adaptability experimental session wind power generating set causes, thereby alleviates the requirement of experimental system to net capacity;
2. can realize the step-less adjustment of voltage, frequency, thereby can simulate all kinds of electrical network deviations and fault easily and flexibly, the extend testing scope is enriched test data, reduces experimental period;
3. can also before grid adaptability test, simulate the various original states of line voltage, thus the data when realizing that complete testing wind power generation unit breaks down under the various states of electrical network.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the existing test macro synoptic diagram that adopts electric network fault analogue means testing wind power generation unit grid adaptability.
Fig. 2 is in the existing power grid adaptability of wind generator set test macro, the structural drawing of electric network fault analogue means.
Fig. 3 is the test macro synoptic diagram of utilization the utility model device for testing power grid adaptability of wind generator set testing wind power generation unit grid adaptability.
Fig. 4 is at the power grid adaptability of wind generator set test macro, the structural drawing one of the utility model device for testing power grid adaptability of wind generator set.
Fig. 5 is the circuit diagram of the embodiment one of the utility model device for testing power grid adaptability of wind generator set.
Fig. 6 is the circuit diagram of the embodiment two of the utility model device for testing power grid adaptability of wind generator set.
Fig. 7 is at the power grid adaptability of wind generator set test macro, the structural drawing two of the utility model device for testing power grid adaptability of wind generator set.
Fig. 8 is the circuit diagram of the embodiment three of the utility model device for testing power grid adaptability of wind generator set.
Embodiment
Embodiment one
As shown in Figure 3, device for testing power grid adaptability of wind generator set of the present utility model adopts the current transformer 20 that makes up based on power semiconductor switch to realize, current transformer 20 input ends connect three-phase supply 1, output terminal connects wind power generating set 2.As required, device for testing power grid adaptability of wind generator set can increase other structures on the basis of current transformer 20.
As shown in Figure 4, current transformer 20 comprises controller 500, rectifier 200, DC link 300 and inverter 400, rectifier 200, DC link 300, inverter 400 connect successively, controller 500 is connected with rectifier 200, inverter 400 signals, rectifier connects three-phase supply 1, inverter 400 connects wind power generating set 3, provides test voltage to wind power generating set to be measured.
The user to rectifier 200 and inverter 400 sending controling instructions, by control rectifier 200, DC link 300, inverter 400, provides test required simulation line voltage to wind power generating set to be measured by controller 500.
As shown in Figure 5, the enforcement circuit of current transformer 20 is as follows: current transformer 20 adopts input, the way of output (delta connection) of phase three-wire three, wherein input terminal In1, In2, In3 connect three-phase supply, and lead-out terminal Out1, Out2, Out3 connect wind power generating set to be measured.Current transformer 20 comprises rectifier 200, DC link 300, inverter 400 and controller 500.
The bridge circuit input end that is made of power semiconductor switch Q7～Q12 connects the bridge circuit output terminal that is made of power semiconductor switch Q1～Q6.
Input capacitance group C1～C3, output capacitance group C4～C6 work to absorb the electrical network load shock, guarantee that the simulation mains voltage signal of device for testing power grid adaptability of wind generator set output is stable.In other embodiments, input capacitance group C1～C3, output capacitance group C4～C6 are not set, do not influence the realization of the object of the invention.
Embodiment two
As shown in Figure 6, the enforcement circuit of the current transformer 20 of device for testing power grid adaptability of wind generator set of the present utility model is as follows: current transformer adopts input, the way of output (star connection) of three-phase and four-line, wherein input terminal In1, In2, In3 and InN (center line input end) connect three-phase supply and center line, and lead-out terminal Out1, Out2, Out3 and OutN (middle line output terminal) connect wind power generating set three-phase to be measured and center line.Current transformer 20 comprises rectifier 800, DC link 900, inverter 1000 and controller 1100.
Described DC link 900 comprises dc capacitor group Cdc11, the Cdc12 of series connection, and dc capacitor group Cdc11, Cdc12 are serially connected in the bridge circuit output terminal that is made of power semiconductor switch Q13～Q18.Wherein the series side DcN of dc capacitor group Cdc11, Cdc12 is connected to three-phase supply center line InN simultaneously.
The bridge circuit input end that is made of power semiconductor switch Q13～Q18 connects the bridge circuit output terminal that is made of power semiconductor switch Q13～Q18.
Present embodiment adopts the three-phase and four-line circuit, can be more convenient for to each phase voltage Vout1 (Vout1N=Vout1-VoutN), and Vout2 (Vout2N=Vout2-VoutN), Vout3 (Vout3N=Vout3-VoutN) implements independently fault simulation.
Input capacitance group C11～C13, output capacitance group C14～C16 work to absorb the electrical network load shock, guarantee that the simulation mains voltage signal of device for testing power grid adaptability of wind generator set output is stable.In other embodiments, input capacitance group C11～C13, output capacitance group C14～C16 are not set, do not influence the realization of the utility model purpose.
Embodiment three
As shown in Figure 7, current transformer 20 comprises ac-to-ac converter 2000 and controller 2100, and controller 2100 is connected with ac-to-ac converter 2000 signals.
As shown in Figure 8, the enforcement circuit of the current transformer 20 of device for testing power grid adaptability of wind generator set of the present utility model is as follows:
The current transformer of present embodiment adopts input, the way of output of phase three-wire three, and wherein input terminal In1～In3 connects three-phase supply, and lead-out terminal Out1～Out3 connects wind power generating set to be measured.
Ac-to-ac converter 2000 comprises matrix form circuit 2200, input capacitance group C21～C23, input reactance L21～L23, output reactance L24～L26 and output capacitance group C24～C26, input reactance L21～L23 is serially connected in each phase input end of matrix form circuit 2200 respectively, input capacitance group C21～C23 is connected between the input end two-phase of ac-to-ac converter 2000, output reactance L24～L26 is serially connected in each phase output terminal of matrix form circuit 2200 respectively, and output capacitance group C24～C26 is connected between the output terminal two-phase of ac-to-ac converter 2000.Matrix form circuit 2200 is made of power semiconductor switch Q31～Q39 that reverse serial connection can be used as two-way gate-controlled switch.
Power semiconductor switch in the various embodiments described above includes but not limited to one of igbt (IGBT), gate level turn-off thyristor (GTO), integrated gate commutated thyristor (IGCT), also can adopt their combination to make up current transformer 20.
Claims (10)
1. a device for testing power grid adaptability of wind generator set is characterized in that, comprises the current transformer that makes up based on power semiconductor switch, and this current transformer input end connects three-phase supply, output terminal connects wind power generating set.
2. device for testing power grid adaptability of wind generator set as claimed in claim 1, it is characterized in that, described current transformer comprises controller and the rectifier that is connected successively, DC link, inverter, described controller is connected with described rectifier, described inverter signal, described rectifier connects three-phase supply, and described inverter connects wind power generating set.
3. device for testing power grid adaptability of wind generator set as claimed in claim 2 is characterized in that, described rectifier comprises first bridge circuit be made up of power semiconductor switch, is serially connected in each reactance of going up mutually of this first bridge circuit input end; Described DC link comprises the dc capacitor that is serially connected in described bridge circuit output terminal; Described inverter comprises second bridge circuit be made up of power semiconductor switch, is serially connected in each reactance of going up mutually of this second bridge circuit output terminal; The described second bridge circuit input end connects the described first bridge circuit output terminal.
4. device for testing power grid adaptability of wind generator set as claimed in claim 3, it is characterized in that, described rectifier comprises the input capacitance group, described inverter comprises the output capacitance group, the electric capacity correspondence of described input capacitance group is connected between the described current transformer input end two-phase, and the electric capacity correspondence of described output capacitance group is connected between the described current transformer output terminal two-phase.
5. device for testing power grid adaptability of wind generator set as claimed in claim 2 is characterized in that, described rectifier comprises the 3rd bridge circuit be made up of power semiconductor switch, is serially connected in each reactance of going up mutually of the 3rd bridge circuit input end; Described DC link comprises serial connection first dc capacitor and second dc capacitor that is serially connected in described bridge circuit output terminal, and the series side of this first dc capacitor and second dc capacitor is connected the three-phase supply center line; Described current transformer comprises the 4th bridge circuit be made up of power semiconductor switch, is serially connected in each reactance of going up mutually of the 4th bridge circuit output terminal; Described the 4th bridge circuit input end connects described the 3rd bridge circuit output terminal.
6. device for testing power grid adaptability of wind generator set as claimed in claim 5, it is characterized in that, described rectifier comprises the input capacitance group, described adverse current device comprises the output capacitance group, the electric capacity correspondence of described input capacitance group is connected between described current transformer input end each and the three-phase supply center line, and the electric capacity correspondence of described output capacitance group is connected between described current transformer output terminal and the three-phase supply center line.
7. device for testing power grid adaptability of wind generator set as claimed in claim 1, it is characterized in that, described current transformer comprises ac-to-ac converter and controller, described ac-to-ac converter connects three-phase supply and wind power generating set, and described controller is connected with described ac-to-ac converter signal.
8. device for testing power grid adaptability of wind generator set as claimed in claim 7, it is characterized in that, described ac-to-ac converter comprises matrix converter, input reactance group and output reactance group, corresponding respectively each the phase input end that is serially connected in this matrix converter of the reactance of described input reactance group, corresponding respectively each phase output terminal that is serially connected in this matrix converter of the reactance of described output reactance group.
9. device for testing power grid adaptability of wind generator set as claimed in claim 8, it is characterized in that, described current transformer comprises input capacitance group and output capacitance group, the electric capacity of described input capacitance group is connected between the input end two-phase of described ac-to-ac converter, and the electric capacity of described output capacitance group is connected between the output terminal two-phase of described ac-to-ac converter.
10. as the described device for testing power grid adaptability of wind generator set of one of claim 1 to 9, it is characterized in that described power semiconductor switch is an igbt, gate level turn-off thyristor, one of integrated gate commutated thyristor or its combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020233650 CN201732150U (en) | 2010-06-18 | 2010-06-18 | Device for testing adaptability to power grid for wind turbine generator set |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020233650 CN201732150U (en) | 2010-06-18 | 2010-06-18 | Device for testing adaptability to power grid for wind turbine generator set |
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| CN201732150U true CN201732150U (en) | 2011-02-02 |
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| CN 201020233650 Expired - Lifetime CN201732150U (en) | 2010-06-18 | 2010-06-18 | Device for testing adaptability to power grid for wind turbine generator set |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103257314A (en) * | 2013-02-27 | 2013-08-21 | 中国电力科学研究院 | Power grid adaptability testing system of mobile wind turbine generator |
| CN105041575A (en) * | 2015-07-10 | 2015-11-11 | 三一重型能源装备有限公司 | Multi-motor power generation device and wind power generation unit |
-
2010
- 2010-06-18 CN CN 201020233650 patent/CN201732150U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| WO2011157043A1 (en) * | 2010-06-18 | 2011-12-22 | 深圳市禾望电气有限公司 | Testing device for power grid adaptability of wind generator set |
| CN101871997B (en) * | 2010-06-18 | 2012-09-05 | 深圳市禾望电气有限公司 | Device for testing power grid adaptability of wind generator set |
| CN103257314A (en) * | 2013-02-27 | 2013-08-21 | 中国电力科学研究院 | Power grid adaptability testing system of mobile wind turbine generator |
| CN103257314B (en) * | 2013-02-27 | 2015-08-05 | 中国电力科学研究院 | A kind of portable Wind turbines grid adaptability test macro |
| CN105041575A (en) * | 2015-07-10 | 2015-11-11 | 三一重型能源装备有限公司 | Multi-motor power generation device and wind power generation unit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110202 Effective date of abandoning: 20120905 |