OF ELECTRICAL AUTOMATIC CONTROL SYSTEM OF ELECTRICAL CONDITION OF SIX-ELECTRODE ORE ELECTRIC ARC FURNACE

摘要

The method of automatic control of the electric mode of a six-electrode ore-thermal, electro furnace and its implementation system relates to the field of electrometallurgy, primarily to electric furnaces and can be used in the smelting of phosphorus, calcium carbide, copper-nickel and other alloys. The method involves the measurement of active power. The invention relates to the field of electrometallurgy, mainly to electric furnaces, smelting ferroalloys, and can be used in the smelting of phosphorus, calcium carbide, nickel-copper and other alloys. When smelting ferroalloys in the ore-thermal furnace, the magnitude of the input power and its even distribution across phases to a decisive extent determine the full reduction reactions, and the phase gap and active resistance of the electrode-bottom circuit, stabilization of the established resistance by moving the electrode holder phases by switching the voltage levels of the transformers. The system for automatic control of the electric mode of a six-electrode ore-thermal electric furnace includes a sensor and setters of active power of the phases, sensors and setters of resistance of the electrode hearth circuit, comparison units, threshold elements, control units for raising and lowering electrodes, control units for switching voltage steps of transformers, phase sensor and current setting unit, timer, cells, AND, NOT; The invention improves the performance of the electric furnace, reduces the specific consumption of electric power It also increases the reliability of operation of furnace transformers by stabilizing active power, distributing it evenly across phases and switching voltage levels of furnace transformers in nominal modes. 2 sp.f-ly, 1 ill. The effectiveness of the work of the electric furnace unit. The task is to choose, at a given electrical disturbance, the most effective regulating effect — moving the electrode or switching the voltage levels of the furnace transformer (PSN) to stabilize the active power of the furnace while it is evenly distributed over the phases and ensuring the safety of the furnace transformer. At the same time, it is necessary to exclude the error w Ё 1 Os