Identification of Multiple Power Quality Disturbances based on Median Filter

This paper proposes a novel methodology to analyse power supply signal corrupted with single and multiple power quality disturbances. Captured signals from exclusively designed hardware set-up are analysed to extract appropriate information. Suitably designed median filters are effectively used to discard spikes. In this paper, different quantitative indicators are introduced to identify different kinds of power quality disturbances. To evaluate the performance of this method captured signals containing single as well as multiple power quality disturbances are tested on significant number and a satisfactory outcome is observed. The effectiveness of the proposed method is measured by overall accuracy and relative computational time and is detailed in the paper.