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Method for identifying the resistance of the active power and workspaces resistively-arc furnace, especially for the production of ferrosilicon

机译:识别有功功率和工作区电阻电弧炉特别是硅铁生产中的电阻的方法

摘要

The object of the invention is the identification of the resistance and power of the active working areas of the resistance-arc furnace, in particular for the production of ferrosilicon, based on measurements of the instantaneous current and phase voltage of the electrode, the determination of the amplitude value, phases of current and successive harmonic constituent phases over a measurement period equal to 20 ms, from which the resistance of the working area is calculated, including the back and the electric arc resistance using alternate schemes,with an electrical arc at the rear and a sub-electric zone at constant values during any period of voltage. The identification of the working areas of the furnace shall be carried out by modelling the electric arc together with the post-electrode zone of the masses melted on a substitution scheme based on the combined parallel two resistances, one of which (r? (t)) models the electric arc zone with the melted-down zone and is variable during each identification period, while the second resistance (Rb) was constant over each power period,models the rear of the electric arc. Modelling the variable resistance characterising the sub-central zone, including the arc, and the alternate fixed resistance of the electric arc-sided masses zone, is determined at the time of reaching the maximum by the replacement resistance of the identified furnace area for each measurement period of voltage and current.
机译:发明内容本发明的目的是基于对电极的瞬时电流和相电压的测量,确定电阻电弧炉的活动工作区域的电阻和功率,特别是用于生产硅铁的电阻和功率。在等于20 ms的测量周期内的振幅值,电流相位和相继谐波组成相位,从中计算出工作区域的电阻,包括使用备用方案的背面电阻和电弧电阻,并且在在任何电压周期内,后部和亚电区域均保持恒定值。炉子的工作区域的识别应通过对电弧和熔化物质的电极后区域进行建模,并根据两个并联的电阻相结合的替代方案进行熔化,其中之一为(r?(t) )用熔化区对电弧区进行建模,并在每个识别期间内变化,而在每个功率周期内第二电阻(Rb)不变,从而对电弧的后部进行建模。在达到最大值时,通过确定的熔炉区域的每次测量的替换电阻来确定对包括电弧在内的次中心区域和电弧侧质量区域的替代固定电阻进行表征的可变电阻的模型电压和电流周期。

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