A direct approach for disturbance detection based on Principal Curves

This paper proposes a direct approach based on Principal Curves for power quality disturbance detection. The main advantages of the method lie in its low computational burden in the operational phase, its capability to detect disturbances when power frequency is time-varying and its good performance to signals exhibiting high noise levels. Simulation and experimental results show that the proposed method outperforms other methods in terms of detection rates and computational complexity.