Review of Flicker Objectives for LV, MV and HV Systems

This BT documents the current industry practice regarding rapid voltage changes and shows how these vary widely and are not necessarily consistent with any existing standard or guide. This is mainly due to the fact that there are presently many inconsistencies across the existing standards on flicker requirements. However, recent research in this area has led to the proposal of new indices for quantifying rapid voltage changes in a defined manner. These indices and sample field test results are also documented in the WG report.