Novel method to be applied for voltage flicker prediction caused by EAF

This investigation develops an enhanced method for estimating the voltage flicker 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 EAF. 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 complex apparent power fluctuation method (MCAPFM) that can yield a more accurate ΔV₁₀ estimation than the conventional method.