It introduces a computer's sound card for high-voltage insulator leakage current cost-effective acquisition of new technology, and through wavelet analysis conducted on the obtained signal noise elimination process. Compared with the traditional signal analysis, wavelet analysis not only from the noise accurately distill the leakage current signal, while at the same authentic reproduction of the leakage current signal degradation characteristics, it is important for early fault diagnosis equipment. significantly improves measurement accuracy, increased equipment failure diagnostic accuracy.

    High-voltage transmission line insulator string flashover contamination is one of the important factors affecting the power grid, with the development of power systems and various types of pollution intensifies, the increasingly serious pollution flashover accident, which seriously hamper the power system security and stability, economy. Insulator Contamination degree and is closely related to its leakage current size, it has practical significance for engineering high voltage insulator leakage current detection.