This paper presents a wavelet analysis technique together with support vector machines (SVM) to discriminate partial discharges (PD) from external disturbances (electromagnetic noise) in a GIS PD measuring system based on magnetic antennas.The technique uses the Cross Wavelet Transform (XWT) to process the PD signals and the external disturbances c
Liquid atomization is widely used in industry, agriculture and other fields.During the atomization process, the liquid first forms a liquid film, and the liquid film becomes unstable in the gas-liquid boundary layer, resulting in the liquid film being broken.Therefore, the instability of the liquid film plays a very important role in the liquid ato
Understanding the WOB and the law of tubular buckling is significant to handle workover operation efficiently and safely.Based on the simulation theory and the characteristics of workover string dynamics,a finite element model is established for the workover string.Then,the tubular in the wellbore is simulated by the model,and the simulation result