Adaptive Frequency Shift Islanding Detection Method Based on dq Transformation

Abstract

The principle of adaptive frequency shift islanding detection method is analyzed. On this basis, adaptive frequency shift based on dq transformation which aim at three phase inverter grid-connecting system is presented, and the simulation by MATLAB is fulfilled. Verified by the simulation, this method can precisely detect the occurrence of islanding. At the same time, the superiority of the new method is verified.