INVESTIGATION OF POWER QUALITY EVENTS IN DISTRIBUTION SYSTEM

The investigation of power quality measures in power systems are important work in monitoring and security of power system network. Most of the power system turbulences are non-stationary and transitory in nature and new tools are being used currently for the analysis of power quality troubles. This paper presents a wavelet based feature abstraction method for the finding of power quality problem. The disturbance waveforms obtained from simulation are decomposed by (DWT) discrete wavelet transform. The energy distribution pattern of the distorted signals has been taken for feature abstraction. Voltage sag, Transient and under voltage have been tested for investigation