Title:
METHOD AND DEVICE FOR SUPPRESSING FLICKER OF ARC FURNACE
Document Type and Number:
Japanese Patent JP3885842
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To suppress the flicker of an arc furnace while an excessive equipment investment is avoided and a power consumption efficiency is improved by a method wherein the operation voltage/current selection is performed only when a signal outputted from a flicker meter exceeds a specified threshold to reduce a power supplied to the arc furnace temporarily.
SOLUTION: A flicker produced in a line 2 is continuously measured and its 20-second integrated valve B is obtained and the value B is inputted to a flicker operation device 4. A 1-minute reference integrated value which is the base of the regulation is set in the flicker operation device 4 as the reference value beforehand. A 1-minute integrated value C corresponding to the inputted 2-second integrated value B is estimated from the value B and subjected to an arithmetic compassion processing with the 1-minute reference integrated value A. A signal (a positive signal equivalent to C-A) based on the arithmetic processing result is inputted to a flicker controller 5 to reduce a power supplied to an arc furnace 1.
Inventors:
Masakatsu Naruse
Takashi Kuroda
Shoji Kitabayashi
Tadayuki Takasaka
Ryuzo Seki
Takashi Kuroda
Shoji Kitabayashi
Tadayuki Takasaka
Ryuzo Seki
Application Number:
JP33092097A
Publication Date:
February 28, 2007
Filing Date:
November 14, 1997
Export Citation:
Assignee:
Daido Steel Co., Ltd.
Nippon Yakin Kogyo Co., Ltd.
Nippon Yakin Kogyo Co., Ltd.
International Classes:
C21C5/52; H02J3/12; G05F1/66; (IPC1-7): H02J3/12; C21C5/52; G05F1/66
Domestic Patent References:
| JP62066319U | ||||
| JP62222313A | ||||
| JP8163781A | ||||
| JP6284579A |
Attorney, Agent or Firm:
Hiromasa Iriyama