System for recognizing partial discharge mode of power equipment
A partial discharge and pattern recognition technology, applied in character and pattern recognition, measurement of electricity, measurement of electrical variables, etc., can solve the problems of large amount of collected data and slow data analysis, achieve continuous triggering, small-capacity storage processing, improve The effect of pattern recognition accuracy
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[0026] According to different detection equipment, different partial discharge sensors are used. For example, the high-voltage cable sensor uses a high-frequency broadband electromagnetic sensor. The body of the sensor is used to couple power frequency current signals; the sensor is connected to the signal preprocessing module of the present invention, and after the preprocessing module performs digital filtering, amplification and conditioning on the signal coupled to the sensor, the conditioned signal is collected by the partial discharge acquisition module, and then Transfer the data to the data analysis module, calculate the partial discharge parameters and PRPD and other spectral information, refer to image 3 , Figure 4 , and further calculate the statistical characteristics of the spectrum, including skewness Sk, steepness Ku, local peak number Pe, asymmetry Φ, cross-correlation coefficient cc, Weibull parameters, normalized discharge capacity q of the discharge spectr...
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