Remote Calibration of Digital Input Electricity Meters

Digital input electricity meters are important components in digital substations for measuring electrical energy. A digital input electricity meter receives digital sampling values in accordance to IEC 61850 through optical fibers. Remote calibration of digital input electricity meters is a new demand for efficiency and convenience. By utilizing digitalization of the input, a novel scheme is proposed for remote calibration of digital input electricity meters. It uses an on-site calibration device, which is a remote controlled digital source, to provide various kinds of calibration signals to meters.