ARCHIVES

Generator protection is an important aspect of power system. Neutral current detection is one of the various protection schemes applied for generator protection. Neutral grounding transformer is employed to give an artificial neutral point in the generator supply system where no direct grounding point is provided. Grounded neutral not only protect the system from damaging fault currents but it also gives reference point for the measurement signals. This paper explains how a neutral grounding transformer is designed for a special purpose generator. Waveforms are depicted from the neutral point of the neutral grounding transformer.