ABSTRACT
This paper proposes the application of wavelet transform for the detection of islanding and fault disturbances in a Distributed Generation (DG)-based power system. For this purpose, an IEEE 14-bus system with DG penetration is considered for the detection of disturbances under different operating conditions. The power system is a hybrid combination of a photovoltaic and wind energy system connected to different buses with different levels of penetration. The voltage signal is retrieved at the Point of Common Coupling (PCC) and processed through the wavelet transform to detect the disturbances. Furthermore, energy and Standard Deviation (STD) as performance indices are evaluated and compared with a suitable threshold to analyze a disturbance condition. Again, a comparative analysis between the existing and proposed detection is studied to prove the better performance of wavelet transform.
