APPARATUS AND METHOD FOR IDENTIFYING A FAULTED PHASE IN A SHUNT CAPACITOR BANK

摘要

An apparatus and method for identifying a faulted phase in a shunt capacitor bank is disclosed. The apparatus includes a sampling circuit for sampling current or voltage signals associated with the shunt capacitor bank. A microcontroller is coupled to the sampling circuit and programmed to measure a compensated neutral point phase angle from the sampled signal, and compare the compensated neutral point phase angle with a fixed reference phase angle. The method includes sampling a current or voltage signal associated with the shunt capacitor bank, determining a compensated neutral point phase angle and comparing the compensated neutral point phase angle with a fixed reference phase.