| 摘要 |
A method of determining voltages of electric arcs in a three-phase arc furnace, which for each phase are the algebraic sum of the phase voltage measured at the terminals of the furnace transformer with respect to the measurement lead, the voltage drop across the resistance of the high-current line of the furnace, and voltages dependent on the product of inductive parameters of the high-current line and the time derivatives of a given phase of the circuit and one of the neighbouring phases, which are proportional to the voltages across Rogowski coils placed in these phases, characterized in that the initial values of the inductive parameters of the high-current line of the furnace are determined for three combinations of a two-phase furnace based on measurements of phase voltages at the terminals of the furnace transformer with respect to the measurement lead and voltages in the Rogowski coils placed in each phase of the circuit, at the moment when the instantaneous value of the current in the circuit passes through zero, and continuous correction of the values of the inductive parameters of the line is performed on the basis of measurements of phase voltages at the terminals of the furnace transformer with respect to the measurement lead and the voltages from the Rogowski coils placed in each phase of the circuit, at three successive moments when the instantaneous values of the currents for the successive phases reach zero.<IMAGE>
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