Empirical Mode Decomposition For Power Quality Monitoring

This paper presents an empirical mode decomposition (EMD) technique as a powerful tool for monitoring power quality in electric power systems. As a multi-resolution signal decomposition technique, EMD has the ability to detect and localize transient features of power disturbances. In this paper, firstly, the theoretical background of EMD is briefly introduced and discussed. Then the technique is presented in detail and used to extract the features of power disturbances. Finally the practicality and advantages of the EMD is discussed based on the simulation results obtained from several scenarios of power disturbances. The results demonstrate the potential of the proposed methodology for power quality monitoring and assessment