Extension Mode in Sliding Window Technique to Minimize Border Distortion Effect

Saidatul Habsah Asman (Faculty of Electrical Engineering, Universiti Teknologi MARA Shah Alam, 40000, Shah Alam, Selangor.)
Ahmad Farid Abidin (Faculty of Electrical Engineering, Universiti Teknologi MARA Shah Alam, 40000, Shah Alam, Selangor.)
Nofri Yenita Dahlan (Faculty of Electrical Engineering, Universiti Teknologi MARA Shah Alam, 40000, Shah Alam, Selangor.)

Indonesian Journal of Electrical Engineering and Computer Science
Vol 8, No 1: October 2017

This paper deals with border distortion effect at starting and ending of finite signal by proposing sliding window technique and basic extension mode implementation. Single phase of transient and voltage sag is chosen to be analyzed in wavelet. The signal which being used for the analysis is simulated in Matlab 2017a. Disturbance signal decomposes into four level and Daubechies 4 (db4) has been chosen for computation. The proposed technique has been compared with conventional method which is finite length power disturbance analysis. Simulation result revealed that the proposed smooth-padding mode can be successfully minimized the border distortion effect compared to the zero-padding and symmetrization approach.