FIELD: electrical engineering; controlling power conditions of steel-smelting arc furnaces.
SUBSTANCE: proposed device has arc current sensor and arc voltage sensor inserted in each phase, their outputs being connected to inputs of comparison unit whose output is connected through amplifier to input of electrode displacement gear; all these components constitute electromechanical circuit for controlling electrode position; it also has operating coordinate regulator whose first input is connected to output of this coordinate sensor, and its output is connected through reactor inductive reactance adjustment unit to input of this reactor inserted in primary circuit of furnace transformer. Device also has arc power sensor whose inputs are connected to arc voltage sensor output and its output, to second input of operating coordinate regulator; arc voltage sensor, operating coordinate regulator, operating coordinate selector, reactor inductive reactance adjustment unit, and reactor proper constitute fast-response arc-power control circuit.
EFFECT: improved dynamic and static precision of arc power control, reduced dispersion of arc active and reactive power, current, and supply voltage.
1 cl, 3 dwg
Title | Year | Author | Number |
---|---|---|---|
DEVICE FOR CONTROLLING POWER SUPPLY CONDITIONS OF MULTIPHASE ELECTRIC-ARC FURNACE | 2002 |
|
RU2238616C2 |
POWER REGULATOR OF MULTIPHASE ELECTRIC ARC FURNACE | 0 |
|
SU1042211A1 |
REGULATOR OF POWER OF POLYPHASE ELECTRIC-ARC FURNACE | 0 |
|
SU1159180A2 |
POWER REGULATOR OF MULTIPHASE ELECTRIC-ARC FURNACE | 0 |
|
SU1399897A1 |
ARC ELECTRIC FURNACE POWER CONTROLER | 0 |
|
SU1029432A1 |
PROCESS FOR CONTROLLER OF MULTIPHASE ELECTRIC FURNACE | 0 |
|
SU1522433A1 |
DEVICE FOR MEASURING INFORMATIVE VALUES OF CURRENT HARMONICS OF THREE-PHASE ARC ELECTRIC FURNACE ARC | 0 |
|
SU1582366A1 |
DEVICE FOR MEASURING POTENTIAL GRADIENT IN ARC COLUMN OF ELECTRIC ARC FURNACE | 0 |
|
SU1406826A1 |
DEVICE FOR AUTOMATIC CONTROLLING ELECTRIC MODE OF THREE-PHASE ARC FURNACE | 0 |
|
SU1823158A1 |
DEVICE FOR MEASURING SIGNIFICANT VALUES OF HARMONICS OF ARC CURRENT OF THREE-PHASE ELECTRIC-ARC FURNACE | 0 |
|
SU1149447A1 |
Authors
Dates
2004-10-27—Published
2002-10-22—Filed