Research on fault feeder detection with adaptive notch filter in non-effective neutral point to ground system’ single phase to ground fault

Abstract

Abstract It is difficult to detect single-phase grounding fault in non-effective neutral point to ground system because of its weak current and unstable arc. In this paper, a kind of self-adaptive notch filter is used to extract the fundamental wave of current signals. This method is verified by Matlab/Simulink simulation. The result confirms that the method can realize fault line detection timely and accurately.