A Study on Flicker Evaluation Considering Power Quality Disturbance of Power System

This paper studies flicker evaluation considering power quality disturbance. A flicker problem with light device irritates human´s eyes. Also, the flicker problem has an influence on adverse effect such as rolling device and rotating device. However, a study of flicker evaluation is not complete. A flicker is measured and evaluated at monitoring point. We consider power quality disturbances such as voltage sag and transient that cause fault and inverter/breaker switching. Power quality disturbances affect flicker evaluation. In other words, a flicker evaluation index increases. Therefore, we consider power quality disturbances. We detect voltage sag and transient using wavelet and evaluate flicker without flicker index including power quality disturbances.