WAMS-based analysis and modelling of forced oscillations due to electric arc furnace dynamics

The operation of electric arc furnaces (EAF) causes variations in the electrical variables, such as: active and reactive power. These variations are related to the proper operation of the EAF that produces a highly intermittent consumption, which makes it a special load. This work proposes an EAF model for electromechanical transient simulation, which is based on a frequency modulated source model, affected by a noise signal with a parameterizable frequency. The proposed model is based on frequency spectral analysis performed on phasor measurement unit (PMU) records. The proposed model can resemble the actual EAF-based forced oscillations, which conceptual background has also been presented in this paper.