A demodulation method with flicker power algorithm based Enhanced Phase-Locked Loop (EPLL)

In this paper, the new demodulation method based on Enhanced Phase-Locked Loop (EPLL) method for flicker power algorithm is proposed. This technique has capability to detect a specific flicker component on input signal and extract flicker envelope without producing a double frequency ripple and new significant low frequency. The IEEE 13 bus distribution system has been used to analyze the capability of the proposed demodulation techniques. The simulation result shows the effectiveness of the proposed techniques to compatible with the flicker power algorithm to determine the flicker source direction and hence trace the dominant flicker source in power system.