AU2001216972A1 - Automatic electrode regulator based on direct power factor regulation - Google Patents
Automatic electrode regulator based on direct power factor regulationInfo
- Publication number
- AU2001216972A1 AU2001216972A1 AU2001216972A AU1697201A AU2001216972A1 AU 2001216972 A1 AU2001216972 A1 AU 2001216972A1 AU 2001216972 A AU2001216972 A AU 2001216972A AU 1697201 A AU1697201 A AU 1697201A AU 2001216972 A1 AU2001216972 A1 AU 2001216972A1
- Authority
- AU
- Australia
- Prior art keywords
- electrode
- power factor
- transformer
- control unit
- transducer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000010891 electric arc Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B7/00—Heating by electric discharge
- H05B7/02—Details
- H05B7/144—Power supplies specially adapted for heating by electric discharge; Automatic control of power, e.g. by positioning of electrodes
- H05B7/148—Automatic control of power
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Discharge Heating (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Generation Of Surge Voltage And Current (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
- Control Of Eletrric Generators (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
Disclosed is an electrode control system for an electric arc furnace having a furnace transformer. The electrode control system includes a current transformer for measuring operating current of the electrode and a voltage transformer for measuring operating voltage of the electrode. An active power transducer is connected to the current transformer and the voltage transformer for calculating active power of the electrode from the measured operating current and operating voltage as a first output signal. A reactive power transducer is connected to the current transformer and the voltage transformer for calculating the reactive power of the electrode from the measured operating current and operating voltage as a second output signal. A programmable control unit is connected to the active power transducer and the reactive transducer for receiving the first and second input signals. The control unit is configured to calculate actual power factor of the electrode from the first and second output signals and compare the actual power factor with a preprogrammed power factor set point. The control unit is configured to generate a control signal indicative of a difference between the actual power factor and the power factor set point. An electrode positioning mechanism is provided for controlling movement of the electrode. The electrode positioning mechanism is connected to the control unit for receiving the control signal and is configured to adjust a vertical height of the electrode such that the actual power factor approximates the power factor set point. A method of controlling the position of an electrode in an electric arc furnace is also disclosed.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09669582 | 2000-09-26 | ||
US09/669,582 US6411643B1 (en) | 1999-09-30 | 2000-09-26 | Automatic electrode regulator based on direct power factor regulation and method |
PCT/EP2000/010543 WO2002028146A1 (en) | 2000-09-26 | 2000-10-26 | Automatic electrode regulator based on direct power factor regulation |
Publications (1)
Publication Number | Publication Date |
---|---|
AU2001216972A1 true AU2001216972A1 (en) | 2002-04-08 |
Family
ID=24686882
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2001216972A Abandoned AU2001216972A1 (en) | 2000-09-26 | 2000-10-26 | Automatic electrode regulator based on direct power factor regulation |
Country Status (6)
Country | Link |
---|---|
US (1) | US6411643B1 (en) |
EP (1) | EP1329137B1 (en) |
AT (1) | ATE347247T1 (en) |
AU (1) | AU2001216972A1 (en) |
DE (1) | DE50013822D1 (en) |
WO (1) | WO2002028146A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050154611A1 (en) * | 2004-01-13 | 2005-07-14 | Sgl Carbon, Ag | Product support method for industrial processes |
DE102005051232A1 (en) * | 2005-10-26 | 2007-05-03 | Sms Demag Ag | Control device for alternating current reduction furnaces |
DE102007041632A1 (en) * | 2006-09-18 | 2008-04-03 | Sms Demag Ag | Melt-metallurgic furnace i.e. electric arc furnace, operating method, involves feeding correcting variables to mediator from control or regulating and fuzzy regulating unit and calculating actuating signal by mediator from variables |
DE102014206008A1 (en) * | 2014-03-31 | 2015-10-01 | Siemens Aktiengesellschaft | Apparatus and method for dynamically adjusting an electric arc furnace |
CN104459306B (en) * | 2014-12-18 | 2017-02-22 | 东北大学 | Power demand quantity remote monitoring system and method for magnesium electrical smelting group furnaces |
RU176886U1 (en) * | 2017-09-20 | 2018-02-01 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Магнитогорский государственный технический университет им.Г.И.Носова" | Electric arc furnace impedance control device |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3186043A (en) | 1963-04-02 | 1965-06-01 | Allegheny Ludlum Steel | Metallurgical furnace control |
US3229148A (en) | 1963-04-22 | 1966-01-11 | Mc Graw Edison Co | Arc furnace electrode control |
US3209060A (en) | 1963-06-12 | 1965-09-28 | Westinghouse Electric Corp | Electrical apparatus |
US3435121A (en) | 1966-03-17 | 1969-03-25 | Allegheny Ludlum Steel | Arc power responsive control system for consumable electrode furnace |
BE758327A (en) | 1969-10-30 | 1971-04-01 | Nippon Kokan Kk | METHOD AND SYSTEM FOR REGULATING ELECTRIC OVEN |
US3767832A (en) | 1972-08-17 | 1973-10-23 | G Bennett | Automatic electrode control |
US4029888A (en) | 1976-05-27 | 1977-06-14 | Robicon Corporation | Arc furnace control system |
US4096344A (en) | 1976-09-30 | 1978-06-20 | Westinghouse Electric Corp. | Electric arc furnace control system |
DE2948787C2 (en) | 1979-12-04 | 1984-05-03 | Siemens AG, 1000 Berlin und 8000 München | Arrangement for the electrode control of an electric arc furnace |
DE3242934A1 (en) | 1982-11-20 | 1984-05-24 | Mannesmann Rexroth GmbH, 8770 Lohr | CONTROL DEVICE FOR ADJUSTING THE ELECTRODE OF AN ARC FURNACE |
SE452840B (en) | 1983-10-31 | 1987-12-14 | Asea Ab | CONTROL SYSTEM FOR DIGITAL LIGHT REAR OVEN |
US4677643A (en) | 1984-03-09 | 1987-06-30 | Licentia Patent-Verwaltungs-Gmbh | Device for feeding one or a plurality of electrodes in an electrothermal furnace |
DE3512189C2 (en) * | 1985-04-03 | 1996-09-05 | Mannesmann Ag | Method and device for controlling arc furnaces |
US4620308A (en) * | 1985-10-30 | 1986-10-28 | Lectromelt Corporation | Arc furnace electrode control |
JPS63242135A (en) | 1987-03-27 | 1988-10-07 | 三菱電機株式会社 | Reactive power compensator |
IT1236363B (en) | 1989-11-30 | 1993-02-25 | Danieli Off Mecc | DIRECT CURRENT ELECTRIC ARC OVEN AND CONTROLLED CURRENT SUPPLY PROCEDURE OF A DIRECT ARC ARC OVEN |
US5155740A (en) | 1990-10-22 | 1992-10-13 | Nkk Corporation | Flicker compensating apparatus for DC arc furnace |
AT395657B (en) | 1990-12-07 | 1993-02-25 | Voest Alpine Ind Anlagen | CONTROL CIRCUIT FOR IMPEDANCE CONTROL OF AN ARC FURNACE |
US5115447A (en) | 1991-01-10 | 1992-05-19 | Ucar Carbon Technology Corporation | Arc furnace electrode control |
CA2060006A1 (en) | 1991-02-08 | 1992-08-09 | Eduard Strebel | Process for electrode control of a dc arc furnace, and an electrode control device |
US5204872A (en) | 1991-04-15 | 1993-04-20 | Milltech-Hoh, Inc. | Control system for electric arc furnace |
DE4327894A1 (en) | 1993-08-19 | 1995-02-23 | Abb Management Ag | Method for stabilizing a power grid against fluctuations in reactive load and reactive power compensation device |
DE4344854A1 (en) | 1993-12-29 | 1995-07-06 | Abb Management Ag | Method for regulating the electrodes of a direct current arc furnace and electrode regulating device |
US5539768A (en) | 1995-03-21 | 1996-07-23 | Ltv Steel Company, Inc. | Electric arc furnace electrode consumption analyzer |
DE19623540C1 (en) | 1996-06-13 | 1997-12-18 | Asea Brown Boveri | Method for stabilizing an AC network against fluctuations in reactive power and reactive power compensation device |
-
2000
- 2000-09-26 US US09/669,582 patent/US6411643B1/en not_active Expired - Fee Related
- 2000-10-26 AT AT00979512T patent/ATE347247T1/en not_active IP Right Cessation
- 2000-10-26 EP EP00979512A patent/EP1329137B1/en not_active Revoked
- 2000-10-26 WO PCT/EP2000/010543 patent/WO2002028146A1/en active IP Right Grant
- 2000-10-26 AU AU2001216972A patent/AU2001216972A1/en not_active Abandoned
- 2000-10-26 DE DE50013822T patent/DE50013822D1/en not_active Revoked
Also Published As
Publication number | Publication date |
---|---|
DE50013822D1 (en) | 2007-01-11 |
ATE347247T1 (en) | 2006-12-15 |
EP1329137B1 (en) | 2006-11-29 |
US6411643B1 (en) | 2002-06-25 |
WO2002028146A1 (en) | 2002-04-04 |
EP1329137A1 (en) | 2003-07-23 |
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