Survey of phasor measurement errors on DFT-based non-synchronous sampling
Yan Chang-you · Relay · 2004
This paper introduces the measurement and the standard of phasor measurement, and then presents DFT and recursive DFT algrithm generally. The frequency of the grid is always fluctuating, which makes the sampling signals non-synchronous. And the railing effect and leakage of FFT algorithm will result in obvious measurement errors.This paper discusses several methods of diminishing several measurement errors, and indicates the feasibility and fundamentality of error correction for phasor measurement in a conclusion.