Abstract: A system for measuring a cathode current includes a conducting bar and a current measuring device. The conducting bar has a rectangular plate-like structure, and a first end of the conducting bar is vertically cut to form a plurality of long teeth. The plurality of long teeth are equally spaced at the first end of the conducting bar. The number of the plurality of long teeth is equal to the number of cathodes. The upper surface of each of the long teeth may include a raised conductive contact. Each of the conductive contacts is connected with one cathode of an upstream slot. A second end of the conducting bar is connected with a downstream slot, and the second end of the conducting bar is one end opposite to the first end. The current measuring device is disposed on the conducting bar and used for measuring the current of each cathode.

Abstract: A method for predicting an electrode short circuit based on a current includes acquiring a current value of a cathode of an anode-cathode pair; acquiring a plurality of current values during a set period of time; determining an increased value of the plurality of current values varying with time; determining whether the increased value is within a set current range; if yes, using a linear fitting method to fit the plurality of current values in time sequence to obtain a linear model; acquiring a slope and a determining coefficient of the linear model; determining whether the slope is within a set slope range; if yes, determining whether the determining coefficient is smaller than a set determining coefficient value; if no, determining that there is a short circuit danger in the electrodes of the anode-cathode pair, and in other cases, determining that there is no short circuit danger in the electrodes.

Abstract: A system for measuring a cathode current includes a conducting bar and a current measuring device. The conducting bar has a rectangular plate-like structure, and a first end of the conducting bar is vertically cut to form a plurality of long teeth. The plurality of long teeth are equally spaced at the first end of the conducting bar. The number of the plurality of long teeth is equal to the number of cathodes. The upper surface of each of the long teeth may include a raised conductive contact. Each of the conductive contacts is connected with one cathode of an upstream slot. A second end of the conducting bar is connected with a downstream slot, and the second end of the conducting bar is one end opposite to the first end. The current measuring device is disposed on the conducting bar and used for measuring the current of each cathode.

Abstract: The present invention discloses a system and method for measuring an anode current of an aluminum electrolytic cell. The system includes a plurality of electrolytic cell units, where the electrolytic cell units each include: a column bus, two horizontal buses, m anodes, m anode rods, one or a pair of crossover buses, and a plurality of optical fiber current sensors. When one side of the anode rod is adjacent to another anode rod, the horizontal bus between the two anode rods is provided with one of the optical fiber current sensors; and when any side of the anode rod is adjacent to the column bus or the crossover bus, the horizontal bus between the anode rod and the column bus or the crossover bus is provided with one of the optical fiber current sensors.

Abstract: The present invention discloses a method and system for quickly detecting a cathode short circuit.