CN103487753B - A kind of method of testing wind power generation unit dynamic property and testing table - Google Patents
A kind of method of testing wind power generation unit dynamic property and testing table Download PDFInfo
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- CN103487753B CN103487753B CN201210192019.1A CN201210192019A CN103487753B CN 103487753 B CN103487753 B CN 103487753B CN 201210192019 A CN201210192019 A CN 201210192019A CN 103487753 B CN103487753 B CN 103487753B
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Abstract
The invention discloses a kind of method and testing table of testing wind power generation unit dynamic property, relate to technical field of wind power generation, described method comprises: when asynchronous machine starts, the mode of operation of asynchronous machine is adjusted to asynchronous motor pattern, the control mode of double-fed frequency converter is adjusted to the V/F control mode being suitable for asynchronous motor pattern; Double-fed frequency converter controls asynchronous machine with V/F control mode and runs, after the rotating speed of asynchronous machine reaches the grid-connected permission rotating speed of double-fed pattern, the mode of operation of asynchronous machine is adjusted to double-fed pattern, the control mode of double-fed frequency converter is adjusted to the vector control mode being suitable for double-fed pattern; Double-fed frequency converter controls asynchronous machine with vector control mode and runs, asynchronous machine is made to drive wind power generating set to be measured to run, after the rotating speed of wind power generating set to be measured reaches wind power generation set grid-connection permission rotating speed, by wind power generation set grid-connection to be measured, to test the dynamic property of wind power generating set to be measured.
Description
Technical field
The present invention relates to technical field of wind power generation, particularly a kind of method of testing wind power generation unit dynamic property and testing table.
Background technology
The testing table of testing wind power generation unit dynamic property is the visual plant detecting wind power generating set dynamic property.Wait the wind power generating set of dispatching from the factory after completing static debugging, need to proceed dynamic debugging, thus obtain the dynamic operation performance of wind power generating set.When running into abnormal conditions, such as can not grid-connected, the problem such as unit can not completely be sent out, powertrace does not meet the demands time, overhaul or change relevant device in time, to carry out related commissioning and maintenance.
At present, the testing table for testing wind power generation unit dynamic property built in industry mainly contains following three kinds, has been widely used in wind-powered electricity generation complete machine unit manufacturer.
1, the testing table of described testing wind power generation unit dynamic property comprises a total power frequency converter, an asynchronous motors, a gear case, as shown in Figure 1, it uses total power Frequency Converter Control asynchronous machine to rotate, then reaches the effect of simulation wheel hub by gear case reduction of speed.In the program, all energy demand total power frequency converters of asynchronous machine consumption provide, so the capacity of total power frequency converter is very large, the overall cost building testing table will be very high.
2, the testing table of described testing wind power generation unit dynamic property comprises a total power frequency converter, a low-speed permanent-magnet motor, and as shown in Figure 2, its use total power Frequency Converter Control permanent magnet motor slowly runs and reaches the effect of simulation wheel hub.In the program, the cost of permanent magnet motor is high, and all energy demand total power frequency converters of permanent magnet motor consumption provide, so the capacity of total power frequency converter is very large, the overall cost building testing table will be very high.
3, the testing table of described testing wind power generation unit dynamic property comprises a double-fed frequency converter, a double fed asynchronous machine, gear case, a small electromotor, and as shown in Figure 3, it uses double-fed frequency converter to control double fed asynchronous machine and runs.First small electromotor starts, the double fed asynchronous machine of motoring ring test platform rotates, and after rotating speed reaches certain value, double-fed frequency converter is started working, control double fed asynchronous machine runs, and the high rotating speed of described double fed asynchronous machine reaches the effect of simulation wheel hub again by gear case reduction of speed.In the program, double-fed frequency converter uses vector control mode to drive double fed asynchronous machine, and therefore, double fed asynchronous machine needs small electromotor to drag when the slow-speed of revolution.So not only complex structure, the overall cost building testing table also will be very high.
Summary of the invention
The object of the present invention is to provide a kind of method and testing table of testing wind power generation unit dynamic property, the problem that test platform structure is complicated and cost is high can be solved better.
According to an aspect of the present invention, provide a kind of method of testing wind power generation unit dynamic property, comprising:
A) when asynchronous machine starts, the mode of operation of asynchronous machine is adjusted to asynchronous motor pattern, the control mode of double-fed frequency converter is adjusted to the voltage V/ frequency F control mode being suitable for asynchronous motor pattern;
B) double-fed frequency converter controls asynchronous machine operation with described V/F control mode, after the rotating speed of described asynchronous machine reaches the grid-connected permission rotating speed of double-fed pattern, the mode of operation of asynchronous machine is adjusted to double-fed pattern, the control mode of double-fed frequency converter is adjusted to the vector control mode being suitable for double-fed pattern;
C) double-fed frequency converter controls asynchronous machine operation with described vector control mode, described asynchronous machine is made to drive wind power generating set to be measured to run, after the rotating speed of described wind power generating set to be measured reaches wind power generation set grid-connection permission rotating speed, by wind power generation set grid-connection to be measured, to test the dynamic property of wind power generating set to be measured.
Preferably, in described steps A) in, by closed stator short-circuiting device, the mode of operation of asynchronous machine is adjusted to described asynchronous motor pattern.
Preferably, described step B) comprising:
Close connecting the net side contactor of industrial electrical network, and start the net side frequency converter of double-fed frequency converter, closing machine side contactor successively, start the pusher side frequency converter of double-fed frequency converter, make double-fed frequency converter control asynchronous machine with V/F control mode and run;
Described asynchronous machine runs under described asynchronous motor pattern, after its rotating speed reaches the grid-connected permission rotating speed of double-fed pattern, close described pusher side frequency converter, and disconnect described pusher side contactor, the control mode of double-fed frequency converter is adjusted to the vector control mode being suitable for double-fed pattern.
Preferably, by disconnecting stator short-circuiting device, the mode of operation of asynchronous machine is adjusted to described double-fed pattern.
Preferably, described step C) comprising:
Closing machine side contactor successively, starts pusher side frequency converter, closed stator contactor, makes double-fed frequency converter control asynchronous machine with described vector control mode and runs;
Described asynchronous machine runs under double-fed pattern, its rotating speed exported runs via driving wind power generating set to be measured after gear case reduction of speed, and after the rotating speed of described wind power generating set to be measured reaches wind power generation set grid-connection permission rotating speed, by wind power generation set grid-connection to be measured, to test the dynamic property of wind power generating set to be measured.
Preferably, given by the rotating speed of Adjustment Tests asynchronous motors, the torque of wind power generating set to be measured and power factor, test the dynamic property of wind power generating set to be measured.
According to a further aspect in the invention, provide a kind of testing table of testing wind power generation unit dynamic property, comprising:
Adjusting gear, for when asynchronous machine starts, the mode of operation of asynchronous machine is adjusted to asynchronous motor pattern, the control mode of double-fed frequency converter is adjusted to the V/F control mode being suitable for described asynchronous motor pattern, after described asynchronous machine reaches the grid-connected permission rotating speed of double-fed pattern, the mode of operation of asynchronous machine is adjusted to double-fed pattern, the control mode of double-fed frequency converter is adjusted to the vector control mode being suitable for double-fed pattern;
Double-fed frequency converter, runs for controlling asynchronous machine with V/F control mode or vector control mode;
Asynchronous machine, after reaching the grid-connected permission rotating speed of double-fed pattern for making its rotating speed under the V/F control mode of described double-fed frequency converter, under the vector control mode of described double-fed frequency converter, drive wind power generating set to be measured to run, to make the rotating speed of described wind power generating set to be measured reach wind power generation set grid-connection allow rotating speed, by wind power generation set grid-connection to be measured, and test the dynamic property of wind power generating set to be measured.
Preferably, described adjusting gear comprises:
Stator short-circuiting device, for when closed, makes described asynchronous machine be in asynchronous motor pattern, when disconnecting, makes described asynchronous machine be in double-fed pattern.
Preferably, described regulating device also comprises:
Pusher side contactor, disconnects for reach the grid-connected permission rotating speed of double-fed pattern at described asynchronous machine after, and again closes after the adjustment mode of operation of described asynchronous machine and the control mode of described double-fed frequency converter.
Compared with prior art, beneficial effect of the present invention is:
The invention provides a kind of method and testing table of testing wind power generation unit dynamic property, can the structure of Optimum Experiment platform, reduce the cost building testing table.
Accompanying drawing explanation
Fig. 1 is the topology diagram of the total power transducer drive asynchronous machine type testing table that prior art provides;
Fig. 2 is the topology diagram of the total power transducer drive synchronous electric type testing table that prior art provides;
Fig. 3 is the topology diagram of the double-fed frequency converter driving asynchronous machine type testing table that prior art provides;
Fig. 4 is the method flow diagram of the testing wind power generation unit dynamic property that the embodiment of the present invention provides;
Fig. 5 is the topology diagram of the testing table of the testing wind power generation unit dynamic property that the embodiment of the present invention provides;
Fig. 6 is the control system that the embodiment of the present invention provides testing table.
Embodiment
Below in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail, should be appreciated that following illustrated preferred embodiment is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Fig. 4 is the method flow diagram of the testing wind power generation unit dynamic property that the embodiment of the present invention provides, and as shown in Figure 4, comprising:
Step S401, when asynchronous machine starts, by closed stator short-circuiting device, the mode of operation of asynchronous machine is adjusted to asynchronous motor pattern, and the control mode of double-fed frequency converter is adjusted to the V/F control mode being suitable for described asynchronous motor pattern.
Step S402, double-fed frequency converter control asynchronous machine with described V/F control mode and run, after the rotating speed of described asynchronous machine reaches the grid-connected permission rotating speed of double-fed pattern, the mode of operation of asynchronous machine is adjusted to double-fed pattern, the control mode of double-fed frequency converter is adjusted to the vector control mode being suitable for described double-fed pattern.Specifically, first, the net side contactor connecting industrial electrical network is closed, start the pusher side frequency converter of the net side frequency converter of double-fed frequency converter, closing machine side contactor, startup double-fed frequency converter, make double-fed frequency converter control asynchronous machine with V/F control mode and run.Then, described asynchronous machine runs under the asynchronous motor pattern being suitable for described V/F control mode, after its rotating speed reaches the grid-connected permission rotating speed of double-fed pattern, close described pusher side frequency converter, disconnect described pusher side contactor, by disconnecting stator short-circuiting device, the mode of operation of asynchronous machine being adjusted to double-fed pattern, and the control mode of double-fed frequency converter being adjusted to the vector control mode being suitable for double-fed pattern.
Step S403, double-fed frequency converter control asynchronous machine with described vector control mode and run, described asynchronous machine is made to drive wind power generating set to be measured to run, after the rotating speed of described wind power generating set to be measured reaches wind power generation set grid-connection permission rotating speed, by wind power generation set grid-connection to be measured, to test the dynamic property of wind power generating set to be measured.Specifically, first, closing machine side contactor, starts pusher side frequency converter, closed stator contactor, makes double-fed frequency converter control asynchronous machine with the vector control mode being suitable for double-fed pattern and runs.Then, described asynchronous machine runs under double-fed pattern, its rotating speed exported runs via driving wind power generating set to be measured after gear case reduction of speed, and after the rotating speed of described wind power generating set to be measured reaches wind power generation set grid-connection permission rotating speed, by wind power generation set grid-connection to be measured.After wind power generation set grid-connection to be measured, given by torque, the power factor adjusting the rotating speed of asynchronous machine and wind power generating set to be measured, just can complete the test of wind power generating set dynamic property to be measured.
That is, the present invention utilizes double-fed frequency converter to drive powerful asynchronous machine, and the rotating speed of asynchronous machine drags wind power generating set and carries out dynamic loading test after gear case reduction of speed.Because in the asynchronous machine start-up course of testing table, load is lower, so according to asynchronous motor pattern, carry out the wiring of asynchronous machine stator winding.Double-fed frequency converter uses V/F control mode to start asynchronous machine, after the rotating speed of asynchronous machine reaches the grid-connected permission rotating speed of double-fed pattern, by changing the stator winding mode of connection of asynchronous machine, the mode of operation of asynchronous machine is switched to double-fed pattern from asynchronous motor pattern.Then, double-fed frequency converter uses vector control mode to control asynchronous machine and runs, and asynchronous machine drives wind power generating set to be measured to run under double-fed pattern, makes the rotating speed of wind power generating set to be measured reach wind power generation set grid-connection and allows rotating speed.Embodiment provided by the invention, in the rated power situation not changing double-fed frequency converter, substantially increases the load capacity of asynchronous machine.
Further, above-mentioned asynchronous machine is doubly-fed asynchronous machine, and it changes the stator winding mode of connection of asynchronous machine by closed or disconnection stator short-circuiting device, thus changes the mode of operation of asynchronous machine.
Present invention also offers a kind of testing table of testing wind power generation unit dynamic property, comprise regulating device, double-fed frequency converter and asynchronous machine.The mode of operation of asynchronous machine, when asynchronous machine starts, is adjusted to asynchronous motor pattern by described adjusting gear, the control mode of double-fed frequency converter is adjusted to the V/F control mode being suitable for described asynchronous motor pattern.Described double-fed frequency converter controls described asynchronous machine with V/F control mode and runs under asynchronous motor pattern, makes the rotating speed of described asynchronous machine reach the grid-connected permission rotating speed of double-fed pattern.Then, the mode of operation of described asynchronous machine is adjusted to double-fed pattern by described adjusting gear, the control mode of described double-fed frequency converter is adjusted to the vector control mode being suitable for described double-fed pattern.Described double-fed frequency converter controls described asynchronous machine with vector control mode and runs under double-fed pattern, described asynchronous machine drives wind power generating set to be measured to run, make the rotating speed of described wind power generating set to be measured reach wind power generation set grid-connection and allow rotating speed, so that by wind power generation set grid-connection to be measured, and test the dynamic property of wind power generating set to be measured.The concrete topology diagram of described testing table as shown in Figure 5, comprise: by the net side contactor of transformer access industrial electrical network, double-fed frequency converter, pusher side contactor, stator short-circuiting device, asynchronous machine, stator contactor, gear case, shaft coupling, wherein, described pusher side contactor and stator short-circuiting device are parts for described regulating device.Described testing table specific works process is as follows:
First, closed stator short-circuiting device, under making asynchronous machine be operated in asynchronous motor pattern, then closed net side contactor, restart net side frequency converter, closing machine side contactor after net side frequency converter synchronously completes, last pusher side frequency converter starts, after pusher side frequency converter synchronously completes, double-fed frequency converter just can control the operation of asynchronous machine by V/F control mode.
After the rotating speed of asynchronous machine reaches the grid-connected permission rotating speed of double-fed pattern, close pusher side frequency converter, then pusher side contactor is disconnected, disconnect stator short-circuiting device again, the mode of operation of asynchronous machine is switched to double-fed pattern, then closing machine side contactor, start pusher side frequency converter, after pusher side frequency converter synchronously completes, closed stator contactor, make double-fed frequency converter control asynchronous machine by vector control mode to run, the load capacity of asynchronous machine is significantly improved, reaches the object of testing wind power generation unit dynamic property.
Asynchronous machine is mechanically connected via shaft coupling and gear case, its high rotating speed is made to export gear case to, gear case is by after described high rotating speed reduction of speed, drag wind power generating set to be measured by another shaft coupling be mechanically connected with wind power generating set to be measured to run, therefore, by the rotating speed of the asynchronous machine of Adjustment Tests platform, the running status of the draught fan impeller of wind power generating set to be measured just can be simulated.When the rotating speed of wind power generating set to be measured reaches wind power generation set grid-connection permission rotating speed, by wind power generation set grid-connection to be measured, and given by the torque and power factor regulating wind power generating set to be measured, complete the test to wind power generating set dynamic property to be measured.
Further, provide together with the electric energy that the electric energy of described testing table consumption is sent by industrial electrical network and wind power generating set to be measured, form a Power Cycle.
The double-fed frequency converter of described testing table passes through the conversion of V/F control mode and vector control mode, controls asynchronous machine and runs, thus reduce the requirement to frequency inverter capacity.
Fig. 6 is the control system that the embodiment of the present invention provides testing table, and as shown in Figure 6, the control system of described testing table comprises PC, testing table PLC, double-fed frequency converter etc.PC by Ethernet respectively with testing table PLC and wind power generating set PLC(Wind turbines PLC) be connected, realize the control to testing table and wind power generating set, such as, PC controls two kinds of control modes of double-fed frequency converter and two kinds of mode of operations of asynchronous machine by testing table PLC, controls grid-connection device by wind power generation set grid-connection by Wind turbines PLC.Meanwhile, the data of testing table and wind power generating set also can respectively by corresponding PLC real-time report to PC.PC processes described data, show and storage etc., and just can judge the dynamic property of wind power generating set to be measured by analyzing described data, and the equipment that realizes runs and man-machine friendliness automatically.
Described PC carries out exchanges data by upper computer software and corresponding PLC, and processes testing table service data, show, stores and analyze.
In sum, the present invention has following technique effect:
The present invention is that the dynamic property of testing wind power generation unit provides a kind of simple and reliable mode, it is in the rated power situation not changing double-fed frequency converter, substantially increase the load capacity of asynchronous machine, not only simplify the structure of testing table, also reduce the cost building testing table.
Although above to invention has been detailed description, the present invention is not limited thereto, those skilled in the art of the present technique can carry out various amendment according to principle of the present invention.Therefore, all amendments done according to the principle of the invention, all should be understood to fall into protection scope of the present invention.
Claims (9)
1. a method for testing wind power generation unit dynamic property, is characterized in that, comprising:
A) when asynchronous machine starts, the mode of operation of asynchronous machine is adjusted to asynchronous motor pattern, the control mode of double-fed frequency converter is adjusted to the V/F control mode being suitable for described asynchronous motor pattern;
B) double-fed frequency converter controls asynchronous machine operation with described V/F control mode, after the rotating speed of described asynchronous machine reaches the grid-connected permission rotating speed of double-fed pattern, the mode of operation of asynchronous machine is adjusted to double-fed pattern, the control mode of double-fed frequency converter is adjusted to the vector control mode being suitable for described double-fed pattern;
C) double-fed frequency converter controls asynchronous machine operation with described vector control mode, described asynchronous machine is made to drive wind power generating set to be measured to run, after the rotating speed of described wind power generating set to be measured reaches wind power generation set grid-connection permission rotating speed, by wind power generation set grid-connection to be measured, to test the dynamic property of wind power generating set to be measured.
2. method according to claim 1, is characterized in that, in described steps A) in, by closed stator short-circuiting device, the mode of operation of asynchronous machine is adjusted to described asynchronous motor pattern.
3. method according to claim 2, is characterized in that, described step B) comprising:
Close connecting the net side contactor of industrial electrical network, and start the net side frequency converter of double-fed frequency converter, closing machine side contactor successively, start the pusher side frequency converter of double-fed frequency converter, make double-fed frequency converter control asynchronous machine with V/F control mode and run;
Described asynchronous machine runs under described asynchronous motor pattern, after its rotating speed reaches the grid-connected permission rotating speed of double-fed pattern, close described pusher side frequency converter, and disconnect described pusher side contactor, the control mode of double-fed frequency converter is adjusted to the vector control mode being suitable for described double-fed pattern.
4. method according to claim 3, is characterized in that, by disconnecting stator short-circuiting device, the mode of operation of asynchronous machine is adjusted to described double-fed pattern.
5. the method according to claim 3 or 4, is characterized in that, described step C) comprising:
Closing machine side contactor successively, starts pusher side frequency converter, closed stator contactor, makes double-fed frequency converter control asynchronous machine with described vector control mode and runs;
Described asynchronous machine runs under double-fed pattern, its rotating speed exported runs via driving wind power generating set to be measured after gear case reduction of speed, and after the rotating speed of described wind power generating set to be measured reaches wind power generation set grid-connection permission rotating speed, by wind power generation set grid-connection to be measured, to test the dynamic property of wind power generating set to be measured.
6. method according to claim 5, is characterized in that, given by the rotating speed of Adjustment Tests asynchronous motors, the torque of wind power generating set to be measured and power factor, tests the dynamic property of wind power generating set to be measured.
7. a testing table for testing wind power generation unit dynamic property, is characterized in that, comprising:
Adjusting gear, for when asynchronous machine starts, the mode of operation of asynchronous machine is adjusted to asynchronous motor pattern, the control mode of double-fed frequency converter is adjusted to the V/F control mode being suitable for described asynchronous motor pattern, after described asynchronous machine reaches the grid-connected permission rotating speed of double-fed pattern, the mode of operation of asynchronous machine is adjusted to double-fed pattern, the control mode of double-fed frequency converter is adjusted to the vector control mode being suitable for described double-fed pattern;
Double-fed frequency converter, runs for controlling asynchronous machine with V/F control mode or vector control mode;
Asynchronous machine, after reaching the grid-connected permission rotating speed of double-fed pattern for making its rotating speed under the V/F control mode of described double-fed frequency converter, under the vector control mode of described double-fed frequency converter, drive wind power generating set to be measured to run, to make the rotating speed of described wind power generating set to be measured reach wind power generation set grid-connection allow rotating speed, by wind power generation set grid-connection to be measured, and test the dynamic property of wind power generating set to be measured.
8. testing table according to claim 7, is characterized in that, described adjusting gear comprises:
Stator short-circuiting device, for when closed, makes described asynchronous machine be in asynchronous motor pattern, when disconnecting, makes described asynchronous machine be in double-fed pattern.
9. the testing table according to claim 7 or 8, it is characterized in that, described adjusting gear also comprises: pusher side contactor, disconnect for reach the grid-connected permission rotating speed of double-fed pattern at described asynchronous machine after, and again close after the adjustment mode of operation of described asynchronous machine and the control mode of described double-fed frequency converter.
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| CN106762446B (en) * | 2016-12-06 | 2019-01-22 | 三一集团有限公司 | The debugging system that generates electricity and method |
| EP3477847A1 (en) * | 2017-10-25 | 2019-05-01 | Siemens Aktiengesellschaft | Double-fed asynchronous engine and method for operating a double-fed asynchronous engine |
| CN112731148A (en) * | 2021-01-26 | 2021-04-30 | 福建铨一电源科技有限公司 | High-capacity feedback type alternating current synchronous generator test system |
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