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This paper presents an active method in detecting islanding for Dispersed Generation (DG) by injecting small amount (0.5%) of negative current into the point of common coupling (PCC), and then the negative system impedance will be measured. In this study, Adaptive Notch Filter (ANF) makes a debut as a synchronous part instead of Phase-Locked Loop (PLL) and as a signal processing unit as well. The...
An analysis based on the power signature concept for detecting oscillation in power system is proposed. The proposed analysis will separate the power due to various loads and the power due to imposed oscillation. Three-phase instantaneous power is based on pq theory where in this domain we can easily distinguish between average power, oscillating power due to nonlinear load, and the new imposed power...
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