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在进行一座电炉钢厂现代化改造或新建一座电炉钢厂时，企业面临着交流或直流电弧炉之间的选择，在这种情况下电气设计参数和消耗值对经济性有很大的影响。本文明确地阐述了在进行两种炉型比较时必须注意的一些重要观点。按德国ＶＤＥ的规定，在出钢量为１６０ｔ其年产量可达到１２０万ｔ时，交流电弧炉的功率被限定在约９６ＭＷ。根据电弧的电压和长度，以及根据石墨电极的电流承载能力，将直流电弧炉的功率限定在相近的数值。就石墨电极消耗量的实际评估来看，显然直流电弧炉较低的生产费用只能是通过节能来实现。直流电弧炉的主要优点是稳定的熔炼和在供电网中较小的电压波动。而这种优点在强电网中不明显，除底电极之外直流电弧炉的缺点是较高的投资费用。
In the modernization of an electric steel mill or the construction of a new electric steel mill, companies face the choice between AC or DC electric arc furnaces, in which case the electrical design parameters and consumption values have a significant economic impact. This article clearly outlines some of the key points to be aware of when comparing two types of furnaces. According to the German VDE regulation, the output of the EAF is limited to about 96 MW when the tapping capacity is 160 t and its annual output can reach 1.2 million t. Depending on the voltage and length of the arc and on the current carrying capacity of the graphite electrode, the DC arc furnace power is limited to similar values. The actual assessment of the graphite electrode consumption point of view, it is clear that the lower DC arc furnace production costs can only be achieved through energy conservation. The main advantages of DC arc furnaces are stable melting and smaller voltage fluctuations in the supply network. And this advantage is not obvious in the strong power grid, in addition to the bottom electrode DC arc furnace is the disadvantage of higher investment costs.