Tone testing method of wind power generator set
A technology of wind turbines and testing methods, which is applied in the direction of engine testing, machine/structural component testing, and measuring devices, and can solve problems such as complex operations, low measurement accuracy, and ambiguous frequencies
Inactive Publication Date: 2012-05-23
CHONGQING UNIV
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Problems solved by technology
[0003] Disadvantages of the existing wind turbine tone test: low measurement accuracy, poor synchronization, serious frequency ambiguity, complicated operation, and high price
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Embodiment Construction
[0069] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0070] Such as figure 1 As shown in the figure, a method for testing the tone of a wind power generating set first needs to obtain the wind speed signal, air temperature signal, air pressure signal, noise signal, rotational speed signal and electric power signal, use the prepolarized microphone 1 to obtain the noise signal, and use the noise signal to adjust the collected The device 2 processes the noise signal, uses the fan operating parameter sensor group 3 to obtain the wind speed signal, air temperature signal, air pressure signal, rotational speed signal and electric power signal, and uses the fan operating parameter signal acquisition conditioner 4 to process the wind speed signal, air temperature signal, air pressure signal, speed signal and electric power signal;
[0071]The output end of the built-in piezoelectric ICP excita...
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The invention relates to a tone testing method of a wind power generator set, which is provided with a pre-polarization microphone and a blower running parameter sensor set. A noise signal of the pre-polarization microphone is output to a noise signal conditioning collector for processing and is output to a computer by a Wi-Fi wireless data transmission module; a blower running parameter signal is output to a blower running parameter signal collection conditioning device by the blower running parameter sensor set for processing and is output to the computer by a USB data transmission module. The computer judges the audio frequency and the tone of the collected signal by virtual instrument software so as to obtain the audibility of the tone. The invention has the advantages of real-time signal collection, high synchronization, high measurement accuracy, accurate and reasonable result, simple operation and high performance-price ratio, adopts a stage ratio analysis technology, eliminates the phenomenon of frequency confusion, simulates the characteristics of the ear and the mind of a person and realizes the tone analysis of the wind power generator set at each whole wind speed.
Description
technical field [0001] The invention belongs to the field of wind power generator audio testing, and in particular relates to a multi-parameter testing instrument for testing and analyzing the tone of a wind power generating set, which is suitable for accurately testing and analyzing the tone at various wind speeds during the noise test of a wind power generating set, so as to Evaluate the fan pitch audibility, thus providing an objective basis for fan noise reduction and noise assessment. Background technique [0002] According to the technical requirements of IEC 61400-11 noise characteristics test of wind turbines, the acoustic noise test of wind turbines needs to be carried out simultaneously under the specified geographical conditions, including power, wind speed, wind direction, air temperature, air pressure, yaw angle, and pitch angle. , speed and A-weighted sound pressure level tests, and tone analysis at each full wind speed in order to evaluate the fan tone audibil...
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IPC IPC(8): G01H17/00G01M15/00
Inventor 柏林刘小峰秦树人尹爱军王见徐冠基
Owner CHONGQING UNIV