Accurate Measurement of Anode Current in Aluminum Electrolysis: From Ideal to Reality

The electrolytic cellCell control systems, designed on the basis of cellCell voltage and line current, are becoming increasingly unsuitable for large aluminumAluminum electrolytic cellsCell. Instead, the design of the next generation electrolytic cellCell should be based on the anodeAnode. The accurate measurement of anodeAnode current is available by use of the fiber optic current sensor (FOCS). The employment of FOCS in aluminum reductionAluminum reduction cellsCell could be considered as a disruptive technological application. The measurement principle of FOCS is first introduced, and then the methodsMethod for online measurement of anodeAnode current in the aluminum reductionAluminum reduction cellCell are presented. The results showed that, FOCS could be used to provide a series of effective methodsMethod for achieving the digital, intelligent, and refined control of the aluminum reductionAluminum reduction cellCell based on the measurement results.