Coefficient on the Basis of Control of Three-phase Current Electric Arcs Characteristics

2020. Т. 20, No 3. С. 129–134 129 Introduction The problems of increasing the efficiency of industrial enterprises are now becoming increasingly relevant [1, 2], while the task of optimizing the activity of industrial units and machines is of particular importance. There are a large number of industrial units, the basis of which is the use of energy created by an electric arc. The lining layer present in such units during operation is subjected to thermal and electromagnetic effects created by the arc. A quantitative measure of this effect is the lining wear coefficient (LWC), one of the most important technological characteristics of modern multi-electrode arc furnaces. The most significant effect on the LWC is exerted by the arc power, the distance from the arc axis to the lining, and the applied voltage. In most studies, the influence of the described factors on the LWC is not taken into account. At the same time, heat fluxes affecting all elements of the furnace structure, including the lining, depend on the shape of the arc. The aim of the work is to study this effect and find the parameters that provide optimization of the LWC. To achieve this goal, an algorithm for calculating the shape of arcs in an AC steelmaking furnace has been developed, which will be used to optimize the objective function.