involving comparison of similar homopolar quantities

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H02H3/286

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HELECTRICITY H02Electric power H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection integrated protection

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H02H3/286involving comparison of similar homopolar quantities

Industries

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Patents Grantslast 30 patents

Information Patent Grant
Boundary separation scheme for faults in power systems
- Patent number 11,500,407
- Issue date Nov 15, 2022
- Schweitzer Engineering Laboratories, Inc.
- Krishnanjan Gubba Ravikumar
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for differential protection of an electric con...
- Patent number 9,425,609
- Issue date Aug 23, 2016
- ABB Technology AG
- Ari Wahlroos
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and device for protecting an autotransformer for an aircraft
- Patent number 8,730,633
- Issue date May 20, 2014
- Airbus Operations SAS
- Pierre Saint-Chamant
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Current differential protection relays
- Patent number 7,906,970
- Issue date Mar 15, 2011
- Areva T&D UK Limited
- Pradeep Kumar Gangadharan
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Negative sequence differential element
- Patent number 7,903,381
- Issue date Mar 8, 2011
- Schweitzer Engineering Laboratories, Inc.
- Normann Fischer
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and device for fault detection in an N-winding three-phase p...
- Patent number 7,873,496
- Issue date Jan 18, 2011
- ABB Technology Ltd.
- Zoran Gajic
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and device for fault detection in transformers or power lines
- Patent number 7,812,615
- Issue date Oct 12, 2010
- ABB AB
- Zoran Gajic
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Protective relay capable of protection applications without protect...
- Patent number 7,375,941
- Issue date May 20, 2008
- Schweitzer Engineering Laboratories, Inc.
- Edmund O. Schweitzer, III
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Apparatus and method for providing differential protection for a ph...
- Patent number 7,319,576
- Issue date Jan 15, 2008
- Schweitzer Engineering Labortories, Inc.
- Michael J. Thompson
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and an apparatus for supervising the operation of current tr...
- Patent number 7,279,905
- Issue date Oct 9, 2007
- Areva T&D UK Limited
- Branislav Cvorovic
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Protective relay capable of protection applications without protect...
- Patent number 7,123,459
- Issue date Oct 17, 2006
- Schweitzer Engineering Laboratories, Inc.
- Edmund O. Schweitzer, III
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Ground relay system in a multiplex direct grounding system
- Patent number 6,922,318
- Issue date Jul 26, 2005
- Mitsubishi Denki Kabushiki Kaisha
- Tadashi Matsumoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Ground fault detection system for ungrounded power systems
- Patent number 6,785,105
- Issue date Aug 31, 2004
- Schweitzer Engineering Laboratories, Inc.
- Jeffrey B. Roberts
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Crossover fault classification for power lines with parallel circuits
- Patent number 6,721,670
- Issue date Apr 13, 2004
- ABB Power Automation Ltd.
- James D. Stoupis
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Fault type selection system for identifying faults in an electric p...
- Patent number 6,525,543
- Issue date Feb 25, 2003
- Schweitzer Engineering Laboratories
- Jeffrey B. Roberts
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Methods and apparatus for differential current measurement in a thr...
- Patent number 6,507,184
- Issue date Jan 14, 2003
- ABB Automation Inc.
- Joel A. B. Elston
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Network protector relay providing a close function
- Patent number 6,504,693
- Issue date Jan 7, 2003
- Eaton Corporation
- John R. Moffat
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power system switch incorporating a positive-sequence fundamental s...
- Patent number 5,642,003
- Issue date Jun 24, 1997
- Electric Power Research Institute, Inc.
- Charles W. Edwards
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Ground fault protection system for multiple source distribution net...
- Patent number 4,110,808
- Issue date Aug 29, 1978
- General Electric Company
- Charles F. Hobson
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Ground fault protective apparatus and method
- Patent number 4,068,275
- Issue date Jan 10, 1978
- Westinghouse Electric Corporation
- Billy E. Teel
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Ground-fault protective scheme for multiple-source electric distrib...
- Patent number 3,949,272
- Issue date Apr 6, 1976
- General Electric Company
- Eugene M. Smith
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
3718920
- Patent number 3,718,920
- Issue date Feb 27, 1973
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
2419269
- Patent number 2,419,269
- Issue date Apr 22, 1947
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
2383329
- Patent number 2,383,329
- Issue date Aug 21, 1945
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
2309487
- Patent number 2,309,487
- Issue date Jan 26, 1943
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
2246310
- Patent number 2,246,310
- Issue date Jun 17, 1941
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
2244998
- Patent number 2,244,998
- Issue date Jun 10, 1941
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
2213294
- Patent number 2,213,294
- Issue date Sep 3, 1940
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
1906468
- Patent number 1,906,468
- Issue date May 2, 1933
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
1873987
- Patent number 1,873,987
- Issue date Aug 30, 1932
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
BOUNDARY SEPARATION SCHEME FOR FAULTS IN POWER SYSTEMS
- Publication number 20210255655
- Publication date Aug 19, 2021
- Schweitzer Engineering Laboratories, Inc.
- Krishnanjan Gubba Ravikumar
- G01 - MEASURING TESTING
Information Patent Application
METHOD AND DEVICE FOR PROTECTING AN AUTOTRANSFORMER FOR AN AIRCRAFT
- Publication number 20130057059
- Publication date Mar 7, 2013
- AIRBUS OPERATIONS (SAS)
- Pierre Saint-Chamant
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
METHOD AND APPARATUS FOR DIFFERENTIAL PROTECTION OF AN ELECTRIC CON...
- Publication number 20130035882
- Publication date Feb 7, 2013
- ABB TECHNOLOGY AG
- Ari WAHLROOS
- G01 - MEASURING TESTING
Information Patent Application
Negative Sequence Differential Element
- Publication number 20090231769
- Publication date Sep 17, 2009
- Normann Fischer
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
METHOD AND DEVICE FOR FAULT DETECTION IN AN N-WINDING THREE-PHASE P...
- Publication number 20090059447
- Publication date Mar 5, 2009
- ABB TECHNOLOGY LTD
- Zoran Gajic
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Current Differential Protection Relays
- Publication number 20090009181
- Publication date Jan 8, 2009
- AREVA T&D UK LIMITED
- Pradeep Kumar Gangadharan
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Method And Device For Fault Detection In Transformers Or Power Lines
- Publication number 20080130179
- Publication date Jun 5, 2008
- ABB AB
- Zoran Gajic
- G01 - MEASURING TESTING
Information Patent Application
Apparatus and method for providing differential protection for a ph...
- Publication number 20070041137
- Publication date Feb 22, 2007
- Schweitzer Engineering Laboratories, Inc.
- Michael J. Thompson
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Protective relay capable of protection applications without protect...
- Publication number 20070035902
- Publication date Feb 15, 2007
- Edmund O. Schweitzer
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Method and an apparatus for supervising the operation of current tr...
- Publication number 20060198073
- Publication date Sep 7, 2006
- Branislav Cvorovic
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Protective relay capable of protection applications without protect...
- Publication number 20040196603
- Publication date Oct 7, 2004
- Edmund O. Schweitzer
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Ground fault detection system for ungrounded power systems
- Publication number 20040021995
- Publication date Feb 5, 2004
- Jeffrey B. Roberts
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Ground relay system in a multiplex direct grounding system
- Publication number 20030117755
- Publication date Jun 26, 2003
- Mitsubishi Denki Kabushiki Kaisha
- Tadashi Matsumoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Crossover fault classification for power lines with parallel circuits
- Publication number 20030060991
- Publication date Mar 27, 2003
- James D. Stoupis
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

involving comparison of similar homopolar quantities

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Boundary separation scheme for faults in power systems

Method and apparatus for differential protection of an electric con...

Method and device for protecting an autotransformer for an aircraft

Current differential protection relays

Negative sequence differential element

Method and device for fault detection in an N-winding three-phase p...

Method and device for fault detection in transformers or power lines

Protective relay capable of protection applications without protect...

Apparatus and method for providing differential protection for a ph...

Method and an apparatus for supervising the operation of current tr...

Protective relay capable of protection applications without protect...

Ground relay system in a multiplex direct grounding system

Ground fault detection system for ungrounded power systems

Crossover fault classification for power lines with parallel circuits

Fault type selection system for identifying faults in an electric p...

Methods and apparatus for differential current measurement in a thr...

Network protector relay providing a close function

Power system switch incorporating a positive-sequence fundamental s...

Ground fault protection system for multiple source distribution net...

Ground fault protective apparatus and method

Ground-fault protective scheme for multiple-source electric distrib...

3718920

2419269

2383329

2309487

2246310

2244998

2213294

1906468

1873987

Patents Applicationslast 30 patents

BOUNDARY SEPARATION SCHEME FOR FAULTS IN POWER SYSTEMS

METHOD AND DEVICE FOR PROTECTING AN AUTOTRANSFORMER FOR AN AIRCRAFT

METHOD AND APPARATUS FOR DIFFERENTIAL PROTECTION OF AN ELECTRIC CON...

Negative Sequence Differential Element

METHOD AND DEVICE FOR FAULT DETECTION IN AN N-WINDING THREE-PHASE P...

Current Differential Protection Relays

Method And Device For Fault Detection In Transformers Or Power Lines

Apparatus and method for providing differential protection for a ph...

Protective relay capable of protection applications without protect...

Method and an apparatus for supervising the operation of current tr...

Protective relay capable of protection applications without protect...

Ground fault detection system for ungrounded power systems

Ground relay system in a multiplex direct grounding system

Crossover fault classification for power lines with parallel circuits