Novel megawatt wind generating set testing system and testing method thereof

A technology of wind power generating set and test system, which is applied in the direction of motor generator testing, measuring electricity, and measuring electrical variables, etc. Problems such as the inability to monitor the test status in real time, achieve strong compatibility and scalability, and meet the multi-faceted and test-required effects

Inactive Publication Date: 2010-11-10
INNER MONGOLIA GEOHO ENERGY EQUIP
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AI-Extracted Technical Summary

Problems solved by technology

[0003] At present, most of the existing wind turbine test systems do not have the low-voltage ride-through test capability of the unit, cannot monitor the test status in real time, cannot effectively simul...
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Method used

[0009] The two-axis extension drag motor of the test system has output shafts at both ends, which can be loaded at both ends. The motor has the following advantages: (1) It is convenient to test different types of units at both ends, and it is also convenient for the construction of the test bench foundation. One end can test high-speed motors, and the other end can test direct (2) It is convenient to realize expansion and phased construction, and the construction characteristics of the test station can be realized by using two identical motors; (3) It can reduce one-time investment, because the test capacity range of the test station (0MW~ 5.6MW) is relatively large, and the numbe...
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Abstract

The invention provides a novel megawatt wind generating set testing system and a testing method thereof. Energy provided by a power system provides electric energy for a double shaft-extension dragging motor by a series of devices; then the dragging motor drives a tested set to operate by a series of devices such as a wind wheel simulator and the like; and the electric energy generated by the tested set is returned to a distribution transformer by a series of devices so that energy feedback is realized. The tested set can simulate the characteristics of a wind turbine under different wind conditions by means of the wind wheel simulator and the output characteristics of the tested set can be detected by the testing system. Meanwhile, the low voltage ride through (LVRT) performance of the tested set can be tested by arranging an LVRT device in the feeding link. The system has the advantages of electric energy saving, flexible configuration and wide applicable power range, capability of testing the control performance and the output power characteristics of the tested set, capability of detecting the low voltage ride through (LVRT) capability of the tested set by adopting the LVRT device, strong compatibility and expansibility and capability of knowing the testing conditions on site in time and meeting multidirectional testing requirements.

Application Domain

Technology Topic

Energy feedbackAutomotive engineering +10

Image

  • Novel megawatt wind generating set testing system and testing method thereof
  • Novel megawatt wind generating set testing system and testing method thereof
  • Novel megawatt wind generating set testing system and testing method thereof

Examples

  • Experimental program(1)

Example Embodiment

[0008] The present invention will be described in further detail below in conjunction with the accompanying drawings: see figure 1 with 2 , A megawatt-class wind turbine test system, the system includes 10kv incoming switch cabinet, distribution transformer, power receiving cabinet, full power converter, double shaft extension motor, coupling, torque meter, deceleration Gearbox, wind turbine simulator, converter (different converters are used for different units), transfer switch cabinet, feeder cabinet, plc, center console, power quality analyzer, power measuring instrument, waveform recorder, etc. Measuring equipment; the industrial power grid is connected to the distribution transformer through the 10kv incoming switch cabinet. The distribution transformer reduces the voltage to 690V and supplies the power receiving cabinet and the full power converter to drive the drag motor; the two-axis extension drag motor ( One end) can also be connected to the coupling, torque meter, reduction gear box, and wind turbine simulator in turn; the wind turbine simulator is then connected to the corresponding wind generator to generate electrical energy; the generator then passes through the corresponding converter (dual-fed Converter or full-power converter) is connected to the transfer switch cabinet; the transfer switch cabinet feeds the current back to the distribution transformer through the feed cabinet to form a complete current loop; the incoming control cabinet, the receiving cabinet, and the feeder The electric cabinet and all converters are connected to the PLC and the console through optical fiber; the power quality analyzer analyzes the power quality of key points (see the location attachment for details) figure 1 ), measuring equipment such as power measuring instrument and waveform recorder are connected to the switch cabinet to measure the current generated, and the LVRT device is used to detect the low voltage ride through capability of the unit under test.
[0009] The two-axis extension motor of this test system has output shafts at both ends, which can carry loads at both ends. The motor has the following advantages: (1) It is convenient to test different types of units at both ends, and it also facilitates the construction of the test bench foundation. One end can test high-speed motors, and the other end can be tested directly by adding reduction gearboxes, adapters, etc. (2) It is convenient to realize capacity expansion and phased construction, and the use of two identical motors can realize the construction characteristics of the test station in phases; (3) One-time investment can be reduced, because the test station's test capacity range (0MW~ 5.6MW) is larger, and the number of drag motors and corresponding inverters can be determined according to the test capacity requirements. If the capacity of the test equipment is below 2.8MW, one drive motor and frequency converter can be put into operation; otherwise, two identical motors and corresponding frequency converters can be used to facilitate the test of equipment with a capacity greater than 2.8MW; (4) Can be reduced It is difficult to use inverters for small drag motors. Using two double-shaft extension motors can be equipped with inverters of considerable capacity, which reduces the difficulty of manufacturing low-voltage high-power inverters.
[0010] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be considered that the specific embodiments of the present invention are limited to this. For those of ordinary skill in the art to which the present invention belongs, without departing from the concept of the present invention Below, you can also make some simple deductions or substitutions, all of which should be regarded as belonging to the invention and the scope of patent protection determined by the submitted claims.
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Description & Claims & Application Information

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