Partial discharge diagnosis method based on data mining
A technology of partial discharge and diagnostic methods, applied in the field of electrical signal detection, can solve problems such as low efficiency, poor interpretability, and low recognition rate, and achieve good interpretability, fast recognition speed, and avoid the limitations of determining weights.
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[0035] The method for diagnosing partial discharge based on data mining in the present invention will be further explained and described below in conjunction with the accompanying drawings and specific embodiments.
[0036] Such as figure 1 As shown, adopt Matlab development language to provide the partial discharge diagnosis method based on data mining in the present embodiment, it comprises the following steps:
[0037] (1) Acquisition signal: Use the sensor to sense the partial discharge signal of the power equipment, amplify the partial discharge signal and perform analog-to-digital conversion to convert it into a digital signal, and continuously collect the digital signal. The continuous collection time of the signal is two power frequencies Period (2×20=40 milliseconds).
[0038] (2) Pre-processing: pre-processing such as amplification and denoising of the collected digital signals, using FIR filtering and wavelet methods to suppress narrow-band noise and white noise in...
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