The Application of Mathematical Morphology in the Disturbance Detection of Power Quality

A method of combining α β conversion and dq conversion to detect power quality disturbances is proposed based on previous studies,which makes use of the characteristics of voltage perturbation signal.It designs two filter elements by choosing a suitable structural element to locate the voltage perturbation signal.The simulation results show that the proposed method is simple,and they can locate the disturbances of the voltage signals quickly and accurately.