WANG Nan, LU Fang-cheng, LIU Yun-peng, et al. Study on Trend Extraction Method for On-line Monitoring Data of tanδ[J]. High voltageapparatus, 2004, (1): 5-8.
WANG Nan, LU Fang-cheng, LIU Yun-peng, et al. Study on Trend Extraction Method for On-line Monitoring Data of tanδ[J]. High voltageapparatus, 2004, (1): 5-8.DOI:
Based on the regularity of on-line monitoring data of tan?
the trend of the data is modeled.Two methods of wavelet transform and morphological filter used t o extract trend are proposed in this paper.A practical example verifies the effe ctiveness of both methods
which can remove the influences of periodical factors and additional noise among the data
and reproduce the original trend of the da ta sequence.