METHOD AND APPARATUS FOR DETERMINING AC VOLTAGE WAVEFORM ANOMALIES

摘要

A method and apparatus for determining AC voltage waveform anomalies. The apparatus comprises a threshold generator for generating at least one time- variant threshold based on information regarding an AC voltage waveform. The apparatus further comprises a threshold detector for comparing a sample of the AC voltage waveform to the at least one time-variant threshold to identify an AC voltage waveform anomaly.