A novel method for estimating voltage flicker

This investigation develops an enhanced method for estimating the voltage fluctuation (ΔV₁₀) of the electric arc furnace (EAF). The method not only considers the reactive power variation but also the active power variation in calculating the estimated ΔV₁₀ value of ac and dc EAFs. This study also considers field measurements of ac and dc EAFs. The results reveal that the estimated ΔV₁₀ value is significantly smaller than the observed value. The conventional way of estimating ΔV₁₀ is ineffective. The survey results demonstrate that variations of active power and reactive power of EAFs are strongly alike. Meanwhile, an ΔV₁₀ estimate must account for the effect of active power variation. However, this study proposes a maximum apparent power fluctuation method that can yield a more accurate ΔV₁₀ estimation than the conventional method.