The Research Of Digital Anti-Interference In Generator Partial Discharge Monitoring

This paper mainly elaborated the generator partial discharge generation reasons and partial discharge type. According to the application of the electrical research association in the generator partial discharge detection, I has researched and developed partial discharge on-line monitor data acquisition system, including hardware and software development. In view of the interference problem of partial discharge detection, I has studied in view of the continual periodic disturbance method. This method creative applied the independent component analysis theory, and obtains the ideal effect. According to the wavelet transformation theory in wavelet filter method, I improved the method of wavelet transform modulus sum(WTMS) , proposed used the similarity of the WTMS across the scale to measure the inter-scale difference value for removing the white noise. The field data experiment has proven this method superiority.