Analysis of a Neutral Grounding Resistor Monitoring Method

Abstract

Electrical power systems control the ground fault condition and its consequent challenges by proper neutral grounding. The neutral grounding resistors are well-known apparatuses that are widely used in this field of power system engineering. These resistors fail due to vibration, intermittent arcs, corrosion, etc. and cause the danger of system being ungrounded or solidly grounded. The continuity of service of these resistors is very critical to many industries resulting in various neutral grounding resistor monitoring techniques. In this paper, all existing monitoring techniques will be reviewed. Moreover, the understood trend of this art will be used to anticipate the next generation of the existing neutral grounding resistor monitoring techniques. Thereafter, the performance of an existing monitoring method will be analyzed under various conditions considering different configurations of the power system. The situations that the monitoring method fails to monitor correctly will be highlighted followed by a potential solution.