METHOD AND DEVICE FOR DETECTING ZERO PHASE COMPONENT

摘要

Provided are a method and device for detecting a zero phase component. A device for detecting a zero phase component includes a meter chip of a sequential sampling method, a data acquisition unit for acquiring sequential data on a plurality of phases from the meter chip, and a zero phase current value measuring unit for calculating an instantaneous current value for fault detection by adding up instantaneous current values of respective phases from the acquired sequential data, and for calculating a zero phase current value by using the calculated instantaneous current value for fault detection.