hrg ground fault detector configured to detect a ground fault in a high resistance ground system, high resistance ground fault detection method configured to detect an hrg ground fault in a hrg system

摘要

hrg ground fault detector configured for detection of a ground fault in a high-resistance ground system, high resistance ground fault detection method configured for the detection of an hrg ground fault in a hrg system there is provided an hrg ground fault detector and a method for detecting a ground fault in a high-resistance grounding system (hrg) the hrg ground fault detector in an exemplary embodiment includes a first input a coupled to a first pha phase of the hrg system; a second input b coupled to a second phase of ph2, and a third input c coupled to a third phase ph0, and the hrg ground fault detector generates a simulated neutral voltage vn from the first phase pha of the second phase. phb, and the third phase ph0, where the simulated neutral voltage vn. comprises a voltage potential of zero when the first phase pha, the second phase phb, and the third phase ph0 are equal, the comparison between the simulated neutral voltage vn. and a predetermined fault voltage limit, and detecting a ground fault of hrg if the simulated neutral voltage vn 'exceeds the limit.