Differential protection of transformers

Industry

CPC
H02H7/045

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Parent Industries

HELECTRICITY H02Electric power H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS H02H7/00Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions

Current Industry

H02H7/045Differential protection of transformers

Industries

Patents Grantslast 30 patents

Information Patent Grant
Transformer overcurrent protection
- Patent number 12,107,410
- Issue date Oct 1, 2024
- S&C Electric Company
- Martin T. Bishop
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Power grid protection via transformer neutral blocking systems and...
- Patent number 11,984,720
- Issue date May 14, 2024
- TechHold LLC
- David Anderson
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
System and method for differential protection under geomagnetically...
- Patent number 11,887,774
- Issue date Jan 30, 2024
- Afshin Rezaei Zare
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Longitudinal differential protection method of transformer
- Patent number 11,881,700
- Issue date Jan 23, 2024
- NR ELECTRIC CO., LTD
- Qiaogen Gu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power converter and control method thereof
- Patent number 11,777,417
- Issue date Oct 3, 2023
- Delta Electronics, Inc.
- Misha Kumar
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Differential protection determination method
- Patent number 11,764,568
- Issue date Sep 19, 2023
- TAIZHOU POWER SUPPLY COMPANY OF STATE GRID ZHEJIANG ELECTRIC POWER
- Ping Zhao
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power converter and control method thereof
- Patent number 11,594,976
- Issue date Feb 28, 2023
- Delta Electronics, Inc.
- Misha Kumar
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power grid protection via transformer neutral blocking systems and...
- Patent number 11,469,590
- Issue date Oct 11, 2022
- Emprimus, LLC
- David Anderson
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Current transformer
- Patent number 11,424,584
- Issue date Aug 23, 2022
- General Electric Technology GmbH
- Simon Kidd
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Secure and dependable restricted earth fault protection for electri...
- Patent number 11,411,390
- Issue date Aug 9, 2022
- Schweitzer Engineering Laboratories, Inc.
- Ritwik Chowdhury
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Circuit for reducing fire hazard risk in a power distribution network
- Patent number 11,398,725
- Issue date Jul 26, 2022
- Southern California Edison Company
- Jesse Rorabaugh
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Apparatus and method for controlling circuit breaker for static syn...
- Patent number 10,923,914
- Issue date Feb 16, 2021
- HYOSUNG HEAVY INDUSTRIES CORPORATION
- Jae Keun No
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Methods and devices for calculating winding currents at a delta sid...
- Patent number 10,921,386
- Issue date Feb 16, 2021
- ABB Power Grids Switzerland AG
- Sandeep Pabbathi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Differential protection method in an electrical power supply system...
- Patent number 10,871,513
- Issue date Dec 22, 2020
- Siemens Aktiengesellschaft
- Frank Mieske
- G01 - MEASURING TESTING
Information Patent Grant
Differential protection method and differential protection device f...
- Patent number 10,707,677
- Issue date Jul 7, 2020
- Siemens Aktiengesellschaft
- Joerg Weilbier
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Residual current detecting (RCD) and ground impedance monitoring tr...
- Patent number 10,585,127
- Issue date Mar 10, 2020
- Webasto Charging Systems, Inc.
- Peter Gabrielsson
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Overexcitation protection for electric power system equipment
- Patent number 10,578,653
- Issue date Mar 3, 2020
- Schweitzer Engineering Laboratories, Inc.
- Ritwik Chowdhury
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Differential protection method and differential protection device f...
- Patent number 10,530,146
- Issue date Jan 7, 2020
- Siemens Aktiengesellschaft
- Frank Mieske
- G01 - MEASURING TESTING
Information Patent Grant
Apparatus and method for detecting disconnection in secondary side...
- Patent number 10,305,272
- Issue date May 28, 2019
- NXP USA, INC.
- Changhao Shi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Pre-magnetizing a transformer connected to a modular multilevel pow...
- Patent number 10,305,274
- Issue date May 28, 2019
- Robert Turner
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Device and method for reducing a magnetic unidirectional flux compo...
- Patent number 10,297,383
- Issue date May 21, 2019
- Siemens Aktiengesellschaft
- Peter Hamberger
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and control device for current differential protection
- Patent number 10,243,351
- Issue date Mar 26, 2019
- ABB Schweiz AG
- Ivo Brncic
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Systems and methods for detecting turn-to-turn faults in windings
- Patent number 10,088,516
- Issue date Oct 2, 2018
- General Electric Company
- Zhiying Zhang
- G01 - MEASURING TESTING
Information Patent Grant
Prevention method of abnormal action protection of UHV regulating c...
- Patent number 10,090,670
- Issue date Oct 2, 2018
- XJ Group Corporation
- Jirui Chen
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Residual current detecting (RCD) and ground impedance monitoring tr...
- Patent number 9,964,574
- Issue date May 8, 2018
- AeroVironment, Inc.
- Peter Gabrielsson
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Method for detecting fault and current differential protection syst...
- Patent number 9,899,830
- Issue date Feb 20, 2018
- ABB Schweiz AG
- Youyi Li
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power transformer inrush current detector
- Patent number 9,891,289
- Issue date Feb 13, 2018
- Cooper Technologies Company
- Ljubomir A. Kojovic
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Systems and methods for detecting turn-to-turn faults in windings
- Patent number 9,726,706
- Issue date Aug 8, 2017
- General Electric Company
- Zhiying Zhang
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Magnetizing inrush current suppression device
- Patent number 9,704,664
- Issue date Jul 11, 2017
- Kabushiki Kaisha Toshiba
- Tadashi Koshizuka
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Frequency-conversion differential protection method for output tran...
- Patent number 9,640,981
- Issue date May 2, 2017
- NR ELECTRIC CO., LTD
- Jun Chen
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
Restricted Earth Fault Relay
- Publication number 20240297496
- Publication date Sep 5, 2024
- MITSUBISHI ELECTRIC CORPORATION
- Reiji WATASE
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
HIGH-IMPEDANCE DIFFERENTIAL PROTECTION USING A DIVERSITY OF SIGNALS
- Publication number 20240250518
- Publication date Jul 25, 2024
- Schweitzer Engineering Laboratories, Inc.
- Normann Fischer
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
DIFFERENTIAL PROTECTION USING INSTRUMENT TRANSFORMER SIGNAL TRANSDU...
- Publication number 20230170685
- Publication date Jun 1, 2023
- Schweitzer Engineering Laboratories, Inc.
- Marcos A. Donolo
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
TRANSFORMER OVERCURRENT PROTECTION
- Publication number 20220271527
- Publication date Aug 25, 2022
- S&C ELECTRIC COMPANY
- Martin T. Bishop
- G01 - MEASURING TESTING
Information Patent Application
SECURE AND DEPENDABLE RESTRICTED EARTH FAULT PROTECTION FOR ELECTRI...
- Publication number 20220209525
- Publication date Jun 30, 2022
- Schweitzer Engineering Laboratories, Inc.
- Ritwik Chowdhury
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SYSTEM AND METHOD FOR DIFFERENTIAL PROTECTION UNDER GEOMAGNETICALLY...
- Publication number 20220037084
- Publication date Feb 3, 2022
- Afshin REZAEI ZARE
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
DIFFERENTIAL PROTECTION DETERMINATION METHOD
- Publication number 20210344190
- Publication date Nov 4, 2021
- TAIZHOU POWER SUPPLY COMPANY OF STATE GRID ZHEJIANG ELECTRIC POWER
- Ping Zhao
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CIRCUIT FOR REDUCING FIRE HAZARD RISK IN A POWER DISTRIBUTION NETWORK
- Publication number 20210328426
- Publication date Oct 21, 2021
- SOUTHERN CALIFORNIA EDISON COMPANY
- Jesse Rorabaugh
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Longitudinal Differential Protection Method Of Transformer
- Publication number 20210203147
- Publication date Jul 1, 2021
- Nr. Electric Co., Ltd
- Qiaogen Gu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
POWER GRID PROTECTION VIA TRANSFORMER NEUTRAL BLOCKING SYSTEMS AND...
- Publication number 20210075213
- Publication date Mar 11, 2021
- TechHold, LLC
- DAVID ANDERSON
- G01 - MEASURING TESTING
Information Patent Application
IMPROVEMENTS IN OR RELATING TO CURRENT TRANSFORMER
- Publication number 20200176975
- Publication date Jun 4, 2020
- General Electric Technology GmbH
- Simon Kidd
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
POWER GRID PROTECTION VIA TRANSFORMER NEUTRAL BLOCKING SYSTEMS AND...
- Publication number 20200106262
- Publication date Apr 2, 2020
- Emprimus, LLC
- DAVID ANDERSON
- G01 - MEASURING TESTING
Information Patent Application
METHODS AND DEVICES FOR CALCULATING WINDING CURRENTS AT A DELTA SID...
- Publication number 20190391199
- Publication date Dec 26, 2019
- ABB Schweiz AG
- Sandeep Pabbathi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
OVEREXCITATION PROTECTION FOR ELECTRIC POWER SYSTEM EQUIPMENT
- Publication number 20190271725
- Publication date Sep 5, 2019
- Schweitzer Engineering Laboratories, Inc.
- Ritwik Chowdhury
- G01 - MEASURING TESTING
Information Patent Application
APPARATUS AND METHOD FOR CONTROLLING CIRCUIT BREAKER FOR STATIC SYN...
- Publication number 20190027934
- Publication date Jan 24, 2019
- HYOSUNG HEAVY INDUSTRIES CORPORATION
- Jae Keun NO
- G05 - CONTROLLING REGULATING
Information Patent Application
Method And Control Device For Current Differential Protection
- Publication number 20180358802
- Publication date Dec 13, 2018
- ABB Schweiz AG
- Ivo Brncic
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
APPARATUS AND METHOD FOR DETECTING DISCONNECTION IN SECONDARY SIDE...
- Publication number 20180261999
- Publication date Sep 13, 2018
- NXP USA, Inc.
- CHANGHAO SHI
- G01 - MEASURING TESTING
Information Patent Application
RESIDUAL CURRENT DETECTING (RCD) AND GROUND IMPEDANCE MONITORING TR...
- Publication number 20180224488
- Publication date Aug 9, 2018
- AeroVironment, Inc.
- Peter Gabrielsson
- B60 - VEHICLES IN GENERAL
Information Patent Application
DIFFERENTIAL PROTECTION METHOD AND DIFFERENTIAL PROTECTION DEVICE F...
- Publication number 20170331278
- Publication date Nov 16, 2017
- Siemens Aktiengesellschaft
- JOERG WEILBIER
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Differential Protection Method And Differential Protection Device F...
- Publication number 20170331279
- Publication date Nov 16, 2017
- SIEMENS AKTIENGESELSCHAFT
- FRANK MIESKE
- G01 - MEASURING TESTING
Information Patent Application
Systems and Methods for Detecting Turn-to-Turn Faults in Windings
- Publication number 20170227594
- Publication date Aug 10, 2017
- GENERAL ELECTRIC COMPANY
- Zhiying Zhang
- G01 - MEASURING TESTING
Information Patent Application
SYSTEMS AND METHODS FOR DETECTING TURN-TO-TURN FAULTS IN WINDINGS
- Publication number 20170227591
- Publication date Aug 10, 2017
- GENERAL ELECTRIC COMPANY
- Zhiying Zhang
- G01 - MEASURING TESTING
Information Patent Application
PREVENTION METHOD OF ABNORMAL ACTION PROTECTION OF UHV REGULATING C...
- Publication number 20170018919
- Publication date Jan 19, 2017
- XJ GROUP CORPROATION
- Jirui Chen
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
FREQUENCY-CONVERSION DIFFERENTIAL PROTECTION METHOD FOR OUTPUT TRAN...
- Publication number 20150255978
- Publication date Sep 10, 2015
- Nr. Electric Co., Ltd
- Jun Chen
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
MAGNETIZING INRUSH CURRENT DETECTION METHOD, MAGNETIZING INRUSH CUR...
- Publication number 20150204918
- Publication date Jul 23, 2015
- Shu De Chen
- G01 - MEASURING TESTING
Information Patent Application
MAGNETIZING INRUSH CURRENT SUPPRESSION DEVICE
- Publication number 20140192443
- Publication date Jul 10, 2014
- Kabushiki Kaisha Toshiba
- Tadashi KOSHIZUKA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
METHOD FOR GENERATING A FAULT SIGNAL
- Publication number 20140095087
- Publication date Apr 3, 2014
- Daniel Bejmert
- G01 - MEASURING TESTING
Information Patent Application
DIFFERENTIAL PROTECTION IN ELECTRICAL POWER NETWORKS
- Publication number 20140002937
- Publication date Jan 2, 2014
- Mika TAUSA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
METHOD AND APPARATUS FOR PROTECTING POWER TRANSFORMERS FROM LARGE E...
- Publication number 20130285671
- Publication date Oct 31, 2013
- GARY R. HOFFMAN
- G01 - MEASURING TESTING
Information Patent Application
METHOD AND AN APPARATUS FOR SUPERVISION OF CURRENT TRANSFORMER IN A...
- Publication number 20130279048
- Publication date Oct 24, 2013
- Ylinen JUHA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Differential protection of transformers

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Transformer overcurrent protection

Power grid protection via transformer neutral blocking systems and...

System and method for differential protection under geomagnetically...

Longitudinal differential protection method of transformer

Power converter and control method thereof

Differential protection determination method

Power converter and control method thereof

Power grid protection via transformer neutral blocking systems and...

Current transformer

Secure and dependable restricted earth fault protection for electri...

Circuit for reducing fire hazard risk in a power distribution network

Apparatus and method for controlling circuit breaker for static syn...

Methods and devices for calculating winding currents at a delta sid...

Differential protection method in an electrical power supply system...

Differential protection method and differential protection device f...

Residual current detecting (RCD) and ground impedance monitoring tr...

Overexcitation protection for electric power system equipment

Differential protection method and differential protection device f...

Apparatus and method for detecting disconnection in secondary side...

Pre-magnetizing a transformer connected to a modular multilevel pow...

Device and method for reducing a magnetic unidirectional flux compo...

Method and control device for current differential protection

Systems and methods for detecting turn-to-turn faults in windings

Prevention method of abnormal action protection of UHV regulating c...

Residual current detecting (RCD) and ground impedance monitoring tr...

Method for detecting fault and current differential protection syst...

Power transformer inrush current detector

Systems and methods for detecting turn-to-turn faults in windings

Magnetizing inrush current suppression device

Frequency-conversion differential protection method for output tran...

Patents Applicationslast 30 patents

Restricted Earth Fault Relay

HIGH-IMPEDANCE DIFFERENTIAL PROTECTION USING A DIVERSITY OF SIGNALS

DIFFERENTIAL PROTECTION USING INSTRUMENT TRANSFORMER SIGNAL TRANSDU...

TRANSFORMER OVERCURRENT PROTECTION

SECURE AND DEPENDABLE RESTRICTED EARTH FAULT PROTECTION FOR ELECTRI...

SYSTEM AND METHOD FOR DIFFERENTIAL PROTECTION UNDER GEOMAGNETICALLY...

DIFFERENTIAL PROTECTION DETERMINATION METHOD

CIRCUIT FOR REDUCING FIRE HAZARD RISK IN A POWER DISTRIBUTION NETWORK

Longitudinal Differential Protection Method Of Transformer

POWER GRID PROTECTION VIA TRANSFORMER NEUTRAL BLOCKING SYSTEMS AND...

IMPROVEMENTS IN OR RELATING TO CURRENT TRANSFORMER

POWER GRID PROTECTION VIA TRANSFORMER NEUTRAL BLOCKING SYSTEMS AND...

METHODS AND DEVICES FOR CALCULATING WINDING CURRENTS AT A DELTA SID...

OVEREXCITATION PROTECTION FOR ELECTRIC POWER SYSTEM EQUIPMENT

APPARATUS AND METHOD FOR CONTROLLING CIRCUIT BREAKER FOR STATIC SYN...

Method And Control Device For Current Differential Protection

APPARATUS AND METHOD FOR DETECTING DISCONNECTION IN SECONDARY SIDE...

RESIDUAL CURRENT DETECTING (RCD) AND GROUND IMPEDANCE MONITORING TR...

DIFFERENTIAL PROTECTION METHOD AND DIFFERENTIAL PROTECTION DEVICE F...

Differential Protection Method And Differential Protection Device F...

Systems and Methods for Detecting Turn-to-Turn Faults in Windings

SYSTEMS AND METHODS FOR DETECTING TURN-TO-TURN FAULTS IN WINDINGS

PREVENTION METHOD OF ABNORMAL ACTION PROTECTION OF UHV REGULATING C...

FREQUENCY-CONVERSION DIFFERENTIAL PROTECTION METHOD FOR OUTPUT TRAN...

MAGNETIZING INRUSH CURRENT DETECTION METHOD, MAGNETIZING INRUSH CUR...

MAGNETIZING INRUSH CURRENT SUPPRESSION DEVICE

METHOD FOR GENERATING A FAULT SIGNAL

DIFFERENTIAL PROTECTION IN ELECTRICAL POWER NETWORKS

METHOD AND APPARATUS FOR PROTECTING POWER TRANSFORMERS FROM LARGE E...

METHOD AND AN APPARATUS FOR SUPERVISION OF CURRENT TRANSFORMER IN A...