Electric arc furnaces (EAFs) are processes with an intensive consumption of energy; in modern arc furnaces, the specific energy conception range is around 0.5 MWh per ton of produced liquid steel. In such furnaces, small improvements in efficiency represent significant savings. Electric arcs are highly nonlinear and chaotic, and their use in the arc furnaces for scrap melting introduces a very high harmonic distortion in the power systems. To improve the understanding of power phenomena at the arc furnaces, this article proposes the application of the current's physical components power theory, and based on this analysis, an interpretation of each current component is provided. Real EAF voltage and current measurements are computed for a complete melting and heating process. This article proposes the use of the current components as performance indicators and gives some ideas about how to improve the operation and control to optimize the electrical energy used at the arc furnaces.

中文翻译：

---

基于电流物理元件功率理论的电弧炉性能参数

电弧炉 (EAF) 是能源消耗量大的工艺；在现代电弧炉中，每吨生产的钢水的比能量概念范围约为 0.5 MWh。在这样的炉子中，效率的小幅提高代表着显着的节省。电弧是高度非线性和混沌的，它们在电弧炉中用于废料熔化会在电力系统中引入非常高的谐波失真。为了加深对电弧炉功率现象的理解，本文提出了电流物理分量功率理论的应用，并在此分析的基础上，对每个电流分量进行了解释。为完整的熔化和加热过程计算实际 EAF 电压和电流测量值。