using homopolar quantities

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CPC
H02H3/402

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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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H02H3/402using homopolar quantities

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Patents Grantslast 30 patents

Information Patent Grant
Systems and methods for a controlled dynamic MHO distance character...
- Patent number 11,411,389
- Issue date Aug 9, 2022
- General Electric Technology GmbH
- Venkatesh Chakrapani
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Voltage based method for fault identification in a transmission lin...
- Patent number 10,416,221
- Issue date Sep 17, 2019
- ABB Schweiz AG
- Ying Yang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Phase and ground protection using tilt-limited adaptive quadrilater...
- Patent number 9,941,684
- Issue date Apr 10, 2018
- Schweitzer Engineering Laboratories, Inc.
- Jorge Fernando Calero
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for detecting earth fault
- Patent number 8,981,785
- Issue date Mar 17, 2015
- ABB Technology AG
- Ari Wahlroos
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Fast impedance protection technique immune to dynamic errors of cap...
- Patent number 8,675,327
- Issue date Mar 18, 2014
- General Electric Company
- Bogdan Z. Kasztenny
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Electrical power system phase and ground protection using an adapti...
- Patent number 8,410,785
- Issue date Apr 2, 2013
- Schweitzer Engineering Laboratories Inc.
- Jorge Fernando Calero
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Load compensation in distance protection of a three-phase power tra...
- Patent number 8,159,229
- Issue date Apr 17, 2012
- ABB Technology Ltd.
- Magnus Akke
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and system for estimation of source impedence on electrical...
- Patent number 8,050,878
- Issue date Nov 1, 2011
- General Electric Company
- John James Dougherty
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for determining circular characteristic
- Patent number 8,022,709
- Issue date Sep 20, 2011
- ABB Technology AG
- Ari Wahlroos
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Protective relay for powers systems having dependable out-of-step b...
- Patent number 6,833,711
- Issue date Dec 21, 2004
- Schweitzer Engineering Laboratories, Inc.
- Daqing Hou
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Line current differential protective relaying method and relay for...
- Patent number 6,829,544
- Issue date Dec 7, 2004
- General Electric Company
- Bogdan Z. Kasztenny
- 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
Directional element to determine faults on ungrounded power systems
- Patent number 6,721,671
- Issue date Apr 13, 2004
- Schweitzer Engineering Laboratories, Inc.
- Jeffrey B. Roberts
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Sensitive ground fault detection system for use in compensated elec...
- Patent number 6,573,726
- Issue date Jun 3, 2003
- Schweitzer Engineering Laboratories, Inc.
- Jeffrey B. Roberts
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Ground distance relay for AC power transmission line protection
- Patent number 6,239,959
- Issue date May 29, 2001
- General Electric Company
- George E. Alexander
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
System for preventing sympathetic tripping in a power system
- Patent number 5,808,845
- Issue date Sep 15, 1998
- Schweitzer Engineering Laboratories Inc.
- Jeffrey B. Roberts
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Adaptive quadrilateral characteristic distance relay
- Patent number 5,796,258
- Issue date Aug 18, 1998
- ABB Power T&D Company, Inc.
- Lifeng Yang
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Adaptive polarizing memory voltage time constant
- Patent number 5,790,418
- Issue date Aug 4, 1998
- Schweitzer Engineering Laboratories, Inc.
- Jeffrey B. Roberts
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Process for producing time dependent waveforms of positive and nega...
- Patent number 5,764,044
- Issue date Jun 9, 1998
- ABB Power T&D Company, Inc.
- Fernando Calero
- G01 - MEASURING TESTING
Information Patent Grant
Protective relay having out-of-step logic capability
- Patent number 5,731,943
- Issue date Mar 24, 1998
- Schweitzer Engineering Laboratories, Inc.
- Jeffrey B. Roberts
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Zero sequence voltage-polarized directional element for protective...
- Patent number 5,694,281
- Issue date Dec 2, 1997
- Schweitzer Engineering Laboratories, Inc.
- Jeffrey B. Roberts
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
One-terminal data fault location system and process for locating a...
- Patent number 5,661,664
- Issue date Aug 26, 1997
- ABB Power T&D Company Inc.
- Damir Novosel
- G01 - MEASURING TESTING
Information Patent Grant
Apparatus for comparing two waveforms in real time
- Patent number 5,659,242
- Issue date Aug 19, 1997
- ABB Power T&D Company Inc.
- Fernando Calero
- G01 - MEASURING TESTING
Information Patent Grant
Process and apparatus for comparing in real time phase differences...
- Patent number 5,576,618
- Issue date Nov 19, 1996
- ABB Power T&D Company, Inc.
- Fernando Calero
- G01 - MEASURING TESTING
Information Patent Grant
Negative sequence directional element for a relay useful in protect...
- Patent number 5,365,396
- Issue date Nov 15, 1994
- Schweitzer Engineering Laboratories, Inc.
- Jeffrey B. Roberts
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Negative sequence directional element for a relay useful in protect...
- Patent number 5,349,490
- Issue date Sep 20, 1994
- Schweitzer Engineering Laboratories, Inc.
- Jeffrey B. Roberts
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Distance relay using a polarizing voltage
- Patent number 5,140,492
- Issue date Aug 18, 1992
- Schweitzer Engineering Laboratories, Inc.
- Edmund O. Schweitzer
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Fault location method for radial transmission and distribution systems
- Patent number 4,996,624
- Issue date Feb 26, 1991
- Schweitzer Engineering Laboratories, Inc.
- Edmund O. Schweitzer
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Distance measuring relay for line faults
- Patent number 4,755,903
- Issue date Jul 5, 1988
- Mitsubishi Denki Kabushiki Kaisha
- Genzaburou Kotani
- G01 - MEASURING TESTING
Information Patent Grant
Ground distance relay for AC power transmission line protection
- Patent number 4,686,601
- Issue date Aug 11, 1987
- General Electric Company
- George E. Alexander
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
VOLTAGE BASED METHOD FOR FAULT IDENTIFICATION IN A TRANSMISSION LIN...
- Publication number 20130317768
- Publication date Nov 28, 2013
- ABB Technology Ltd.
- Ying Yang
- G01 - MEASURING TESTING
Information Patent Application
METHOD AND APPARATUS FOR DETECTING EARTH FAULT
- Publication number 20130043879
- Publication date Feb 21, 2013
- ABB TECHNOLOGY AG
- Ari Wahlroos
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
METHOD OF HIGH IMPEDANCE GROUNDFAULT DETECTION FOR DIFFERENTIAL PRO...
- Publication number 20120330582
- Publication date Dec 27, 2012
- Schneider Electric Energy UK Ltd.
- Andrzej Wiszniewski
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Method and Apparatus for Ground Distance Protection
- Publication number 20120206149
- Publication date Aug 16, 2012
- ABB Research Ltd.
- Bin Su
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
ELECTRICAL POWER SYSTEM PHASE AND GROUND PROTECTION USING AN ADAPTI...
- Publication number 20110068803
- Publication date Mar 24, 2011
- Jorge Fernando Calero
- G01 - MEASURING TESTING
Information Patent Application
LOAD COMPENSATION IN DISTANCE PROTECTION OF A THREE-PHASE POWER TRA...
- Publication number 20100225329
- Publication date Sep 9, 2010
- ABB Technology Ltd.
- Magnus Akke
- G01 - MEASURING TESTING
Information Patent Application
METHOD AND SYSTEM FOR ESTIMATION OF SOURCE IMPEDENCE ON ELECTRICAL...
- Publication number 20100121594
- Publication date May 13, 2010
- John James Dougherty
- G01 - MEASURING TESTING
Information Patent Application
METHOD AND APPARATUS FOR DETERMINING CIRCULAR CHARACTERISTIC
- Publication number 20090309612
- Publication date Dec 17, 2009
- ABB TECHNOLOGY AG
- Ari Wahlroos
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
FAST IMPEDANCE PROTECTION TECHNIQUE IMMUNE TO DYNAMIC ERRORS OF CAP...
- Publication number 20080239602
- Publication date Oct 2, 2008
- GENERAL ELECTRIC COMPANY
- Bogdan Z. Kasztenny
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
System for maintaining fault-type selection during an out-of-step c...
- Publication number 20060152866
- Publication date Jul 13, 2006
- Gabriel Benmouyal
- 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
Directional element to determine faults on ungrounded power systems
- Publication number 20030078745
- Publication date Apr 24, 2003
- Jeffrey B. Roberts
- G01 - MEASURING TESTING

using homopolar quantities

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Systems and methods for a controlled dynamic MHO distance character...

Voltage based method for fault identification in a transmission lin...

Phase and ground protection using tilt-limited adaptive quadrilater...

Method and apparatus for detecting earth fault

Fast impedance protection technique immune to dynamic errors of cap...

Electrical power system phase and ground protection using an adapti...

Load compensation in distance protection of a three-phase power tra...

Method and system for estimation of source impedence on electrical...

Method and apparatus for determining circular characteristic

Protective relay for powers systems having dependable out-of-step b...

Line current differential protective relaying method and relay for...

Ground fault detection system for ungrounded power systems

Directional element to determine faults on ungrounded power systems

Sensitive ground fault detection system for use in compensated elec...

Ground distance relay for AC power transmission line protection

System for preventing sympathetic tripping in a power system

Adaptive quadrilateral characteristic distance relay

Adaptive polarizing memory voltage time constant

Process for producing time dependent waveforms of positive and nega...

Protective relay having out-of-step logic capability

Zero sequence voltage-polarized directional element for protective...

One-terminal data fault location system and process for locating a...

Apparatus for comparing two waveforms in real time

Process and apparatus for comparing in real time phase differences...

Negative sequence directional element for a relay useful in protect...

Negative sequence directional element for a relay useful in protect...

Distance relay using a polarizing voltage

Fault location method for radial transmission and distribution systems

Distance measuring relay for line faults

Ground distance relay for AC power transmission line protection

Patents Applicationslast 30 patents

VOLTAGE BASED METHOD FOR FAULT IDENTIFICATION IN A TRANSMISSION LIN...

METHOD AND APPARATUS FOR DETECTING EARTH FAULT

METHOD OF HIGH IMPEDANCE GROUNDFAULT DETECTION FOR DIFFERENTIAL PRO...

Method and Apparatus for Ground Distance Protection

ELECTRICAL POWER SYSTEM PHASE AND GROUND PROTECTION USING AN ADAPTI...

LOAD COMPENSATION IN DISTANCE PROTECTION OF A THREE-PHASE POWER TRA...

METHOD AND SYSTEM FOR ESTIMATION OF SOURCE IMPEDENCE ON ELECTRICAL...

METHOD AND APPARATUS FOR DETERMINING CIRCULAR CHARACTERISTIC

FAST IMPEDANCE PROTECTION TECHNIQUE IMMUNE TO DYNAMIC ERRORS OF CAP...

System for maintaining fault-type selection during an out-of-step c...

Ground fault detection system for ungrounded power systems

Directional element to determine faults on ungrounded power systems