| Patent | Date |
|---|
Phase selection for traveling wave fault detection systems
Grant 11,307,264 - Guzman-Casillas , et al. April 19, 2 | 2022-04-19 |
Detection of low-energy events in an electric power system
Grant 11,280,834 - Schweitzer, III , et al. March 22, 2 | 2022-03-22 |
Integrating Memory Dropout Timer
App 20220065949 - Guzman-Casillas; Armando ; et al. | 2022-03-03 |
Generator loss-of-field protection
Grant 11,196,369 - Alla , et al. December 7, 2 | 2021-12-07 |
Event direction in line sensors
Grant 10,830,832 - Hao , et al. November 10, 2 | 2020-11-10 |
Fault Detection In Electric Power Delivery Systems Using Underreach, Directional, And Traveling Wave Elements
App 20200350760 - Schweitzer, III; Edmund O. ; et al. | 2020-11-05 |
Fault detection in electric power delivery systems using underreach, directional, and traveling wave elements
Grant 10,742,022 - Schweitzer, III , et al. A | 2020-08-11 |
Electric power fault protection device using single-ended traveling wave fault location estimation
Grant 10,585,133 - Guzman-Casillas , et al. | 2020-03-10 |
Detection Of Low-energy Events In An Electric Power System
App 20200072904 - Schweitzer, III; Edmund O. ; et al. | 2020-03-05 |
Generator Loss-of-field Protection
App 20200076338 - Alla; Matchyaraju ; et al. | 2020-03-05 |
Testing system for traveling wave fault detectors
Grant 10,564,247 - Guzman-Casillas , et al. Feb | 2020-02-18 |
Overcurrent element in time domain
Grant 10,522,995 - Kasztenny , et al. Dec | 2019-12-31 |
Detection of an electric power system fault direction using traveling waves
Grant 10,483,747 - Schweitzer, III , et al. Nov | 2019-11-19 |
Event Direction In Line Sensors
App 20190331722 - Hao; Kei ; et al. | 2019-10-31 |
Time-domain line differential protection of electric power delivery systems
Grant 10,422,827 - Schweitzer, III , et al. Sept | 2019-09-24 |
Electric Power Fault Protection Device Using Single-ended Traveling Wave Fault Location Estimation
App 20190212382 - Guzman-Casillas; Armando ; et al. | 2019-07-11 |
Traveling Wave Fault Location With Dispersion Compensation In Electric Power Delivery Systems
App 20190187202 - Schweitzer, III; Edmund O. ; et al. | 2019-06-20 |
Time-domain distance line protection of electric power delivery systems
Grant 10,310,005 - Schweitzer, III , et al. | 2019-06-04 |
Time-domain differential line protection of electric power delivery systems
Grant 10,310,004 - Schweitzer, III , et al. | 2019-06-04 |
Traveling wave based single end fault location
Grant 10,302,690 - Schweitzer, III , et al. | 2019-05-28 |
Traveling wave based single end fault location
Grant 10,295,585 - Schweitzer, III , et al. | 2019-05-21 |
Automatically configurable intelligent electronic device
Grant 10,261,567 - Mynam , et al. | 2019-04-16 |
Fault location using traveling waves
Grant 10,228,409 - Schweitzer, III , et al. | 2019-03-12 |
Time-domain Line Differential Protection Of Electric Power Delivery Systems
App 20180292448 - Schweitzer, III; Edmund O. ; et al. | 2018-10-11 |
Time-domain directional line protection of electric power delivery systems
Grant 10,090,664 - Schweitzer, III , et al. October 2, 2 | 2018-10-02 |
Time-domain Distance Line Protection Of Electric Power Delivery Systems
App 20180278048 - Schweitzer, III; Edmund O. ; et al. | 2018-09-27 |
Testing System For Traveling Wave Fault Detectors
App 20180210060 - Guzman-Casillas; Armando ; et al. | 2018-07-26 |
Time-domain Differential Line Protection Of Electric Power Delivery Systems
App 20180212421 - Schweitzer, III; Edmund O. ; et al. | 2018-07-26 |
Traveling Wave Based Single End Fault Location
App 20180196100 - Schweitzer, III; Edmund O. ; et al. | 2018-07-12 |
Traveling Wave Based Single End Fault Location
App 20180136269 - Schweitzer, III; Edmund O. ; et al. | 2018-05-17 |
Phase and ground protection using tilt-limited adaptive quadrilateral characteristic
Grant 9,941,684 - Calero , et al. April 10, 2 | 2018-04-10 |
Time-domain Line Differential Protection Of Electric Power Delivery Systems
App 20180083437 - Schweitzer, III; Edmund O. ; et al. | 2018-03-22 |
Overcurrent Element in Time Domain
App 20170358913 - Kasztenny; Bogdan Z. ; et al. | 2017-12-14 |
Phase Selection for Traveling Wave Fault Detection Systems
App 20170356965 - Guzman-Casillas; Armando ; et al. | 2017-12-14 |
Fault Detection in Electric Power Delivery Systems Using Underreach, Directional, and Traveling Wave Elements
App 20170146613 - Schweitzer, III; Edmund O. ; et al. | 2017-05-25 |
Fault Location Using Traveling Waves
App 20170131343 - Schweitzer, III; Edmund O. ; et al. | 2017-05-11 |
Fault detection in electric power delivery systems using underreach, directional, and traveling wave elements
Grant 9,627,881 - Schweitzer, III , et al. April 18, 2 | 2017-04-18 |
Traveling Wave Directional Element
App 20170104324 - Schweitzer, III; Edmund O. ; et al. | 2017-04-13 |
Time-domain Directional Line Protection Of Electric Power Delivery Systems
App 20170082675 - Schweitzer, III; Edmund O. ; et al. | 2017-03-23 |
Fault detection in electric power delivery systems using underreach, directional, and traveling wave elements
Grant 9,594,112 - Schweitzer, III , et al. March 14, 2 | 2017-03-14 |
Fault location using traveling waves
Grant 9,588,168 - Schweitzer, III , et al. March 7, 2 | 2017-03-07 |
Fault Detection In Electric Power Delivery Systems Using Underreach, Directional, And Traveling Wave Elements
App 20170012424 - Schweitzer, III; Edmund O. ; et al. | 2017-01-12 |
Phase And Ground Protection Using Tilt-limited Adaptive Quadrilateral Characteristic
App 20160334469 - Calero; Jorge Fernando ; et al. | 2016-11-17 |
Fault detection in electric power delivery systems using underreach, directional, and traveling wave elements
Grant 9,470,748 - Schweitzer, III , et al. October 18, 2 | 2016-10-18 |
Fault Location Using Traveling Waves
App 20160216310 - Schweitzer, III; Edmund O. ; et al. | 2016-07-28 |
Fault Detection In Electric Power Delivery Systems Using Underreach, Directional, And Traveling Wave Elements
App 20160077150 - Schweitzer, III; Edmund O. ; et al. | 2016-03-17 |
Fault Detection In Electric Power Delivery Systems Using Underreach, Directional, And Traveling Wave Elements
App 20160077149 - Schweitzer, III; Edmund O. ; et al. | 2016-03-17 |
Electrical power system phase and ground protection using an adaptive quadrilateral characteristic
Grant 9,257,827 - Calero , et al. February 9, 2 | 2016-02-09 |
Power line parameter adjustment and fault location using traveling waves
Grant 8,990,036 - Schweitzer, III , et al. March 24, 2 | 2015-03-24 |
Traveling Wave Validation Using Estimated Fault Location
App 20150081236 - Schweitzer, III; Edmund O. ; et al. | 2015-03-19 |
Fault Location Using Traveling Waves By Calculating Traveling Wave Arrival Time
App 20150081235 - Schweitzer, III; Edmund O. ; et al. | 2015-03-19 |
Power Line Parameter Adjustment And Fault Location Using Traveling Waves
App 20150081234 - Schweitzer, III; Edmund O. ; et al. | 2015-03-19 |
Fault location in a non-homogeneous electric power line
Grant 8,942,954 - Gong , et al. January 27, 2 | 2015-01-27 |
Automatically Configurable Intelligent Electronic Device
App 20140351572 - Mynam; Mangapathirao Venkata ; et al. | 2014-11-27 |
Fault location using traveling waves
Grant 8,781,766 - Schweitzer, III , et al. July 15, 2 | 2014-07-15 |
Fault Location Using Traveling Waves
App 20140074414 - Schweitzer, III; Edmund O. ; et al. | 2014-03-13 |
Symmetrical component amplitude and phase comparators for line protection using time stamped data
Grant 8,655,608 - Guzman-Casillas February 18, 2 | 2014-02-18 |
Fault location using traveling waves
Grant 8,655,609 - Schweitzer, III , et al. February 18, 2 | 2014-02-18 |
Fault location in electric power delivery systems
Grant 8,558,551 - Mynam , et al. October 15, 2 | 2013-10-15 |
Fault location in electric power delivery systems
Grant 8,525,522 - Gong , et al. September 3, 2 | 2013-09-03 |
Apparatus and method for estimating synchronized phasors at predetermined times referenced to a common time standard in an electrical system
Grant 8,494,795 - Zweigle , et al. July 23, 2 | 2013-07-23 |
Fault Location Using Traveling Waves
App 20130096854 - Schweitzer, III; Edmund O. ; et al. | 2013-04-18 |
Electrical power system phase and ground protection using an adaptive quadrilateral characteristics
Grant 8,410,785 - Calero , et al. April 2, 2 | 2013-04-02 |
Distributed bus differential protection using time-stamped data
Grant 8,405,944 - Donolo , et al. March 26, 2 | 2013-03-26 |
Islanding detection in an electrical power delivery system
Grant 8,346,402 - Guzman-Casillas , et al. January 1, 2 | 2013-01-01 |
Minimizing circulating current using time-aligned data
Grant 8,321,162 - Labuschagne , et al. November 27, 2 | 2012-11-27 |
Differential element with harmonic blocking and harmonic restraint operating in parallel
Grant 8,194,374 - Guzman-Casillas , et al. June 5, 2 | 2012-06-05 |
Fault Location In A Non-homogeneous Electric Power Line
App 20120068717 - Gong; Yanfeng ; et al. | 2012-03-22 |
State and topology processor
Grant 8,112,235 - Schweitzer, III , et al. February 7, 2 | 2012-02-07 |
Fault Location In Electric Power Delivery Systems
App 20110264388 - Gong; Yanfeng ; et al. | 2011-10-27 |
Fault Location in Electric Power Delivery Systems
App 20110264389 - Mynam; Mangapathirao Venkata ; et al. | 2011-10-27 |
Transformer through-fault current monitor
Grant 8,031,447 - Guzman-Casillas , et al. October 4, 2 | 2011-10-04 |
Real-time power system oscillation detection using modal analysis
Grant 7,987,059 - Gong , et al. July 26, 2 | 2011-07-26 |
Systems and methods for power swing and out-of-step detection using time stamped data
Grant 7,930,117 - Guzman-Casillas April 19, 2 | 2011-04-19 |
Apparatus And Method For Estimating Synchronized Phasors At Predetermined Times Referenced To A Common Time Standard In An Electrical System
App 20110077885 - Zweigle; Gregary C. ; et al. | 2011-03-31 |
Electrical Power System Phase And Ground Protection Using An Adaptive Quadrilateral Characteristics
App 20110068803 - Calero; Jorge Fernando ; et al. | 2011-03-24 |
State And Topology Processor
App 20110004425 - Schweitzer, III; Edmund O. ; et al. | 2011-01-06 |
State and topology processor
Grant 7,856,327 - Schweitzer, III , et al. December 21, 2 | 2010-12-21 |
Islanding Detection In An Electrical Power Delivery System
App 20100286838 - Guzman-Casillas; Armando ; et al. | 2010-11-11 |
Differential Element With Harmonic Blocking And Harmonic Restraint Operating In Parallel
App 20100264749 - Guzman-Casillas; Armando ; et al. | 2010-10-21 |
Minimizing Circulating Current Using Time-aligned Data
App 20100125373 - Labuschagne; Casper A. ; et al. | 2010-05-20 |
Apparatus and method for providing protection for a synchronous electrical generator in a power system
Grant 7,710,693 - Guzman-Casillas , et al. May 4, 2 | 2010-05-04 |
Distributed Bus Differential Protection Using Time-stamped Data
App 20100002348 - Donolo; Marcos A. ; et al. | 2010-01-07 |
Apparatus, method, and system for wide-area protection and control using power system data having a time component associated therewith
Grant 7,630,863 - Zweigle , et al. December 8, 2 | 2009-12-08 |
Compensated inverse-time undervoltage load shedding systems
Grant 7,582,986 - Folkers , et al. September 1, 2 | 2009-09-01 |
Dynamically configurable relay element and related methods
Grant 7,570,469 - Guzman-Casillas , et al. August 4, 2 | 2009-08-04 |
State And Topology Processor
App 20090125158 - Schweitzer, III; Edmund O. ; et al. | 2009-05-14 |
Real-Time Power System Oscillation Detection Using Modal Analysis
App 20090099798 - Gong; Yanfeng ; et al. | 2009-04-16 |
Transformer Through-Fault Current Monitor
App 20090091867 - Guzman-Casillas; Armando ; et al. | 2009-04-09 |
Systems And Methods For Power Swing And Out-of-step Detection Using Time Stamped Data
App 20090089608 - Guzman-Casillas; Armando | 2009-04-02 |
Synchronized Phasor Processor For A Power System
App 20090088990 - Schweitzer, III; Edmund O. ; et al. | 2009-04-02 |
Symmetrical Component Amplitude And Phase Comparators For Line Protection Using Time Stamped Data
App 20090088989 - Guzman-Casillas; Armando | 2009-04-02 |
Apparatus and method for estimating synchronized phasors at predetermined times referenced to an absolute time standard in an electrical system
Grant 7,480,580 - Zweigle , et al. January 20, 2 | 2009-01-20 |
Apparatus And Method For Estimating Synchronized Phasors At Predetermined Times Referenced To A Common Time Standard In An Electrical System
App 20080281540 - Zweigle; Gregary C. ; et al. | 2008-11-13 |
Apparatus And Method For Providing Protection For A Synchronous Electrical Generator In A Power System
App 20080074810 - Guzman-Casillas; Armando ; et al. | 2008-03-27 |
Apparatus, Method, And System For Wide-area Protection And Control Using Power System Data Having A Time Component Associated Therewith
App 20080071482 - Zweigle; Gregary C. ; et al. | 2008-03-20 |
Apparatus and method for estimating synchronized phasors at predetermined times referenced to an absolute time standard in an electrical system
App 20070086134 - Zweigle; Gregary C. ; et al. | 2007-04-19 |
Apparatus and method for detecting the loss of a current transformer connection coupling a current differential relay to an element of a power system
Grant 7,196,884 - Guzman-Casillas , et al. March 27, 2 | 2007-03-27 |
Dynamically configurable relay element and related methods
App 20060291120 - Guzman-Casillas; Armando ; et al. | 2006-12-28 |
System and method for transmitting power system data over a wide area network
App 20060224336 - Petras; Charles E. ; et al. | 2006-10-05 |
Apparatus and method for detecting the loss of a current transformer connection coupling a current differential relay to an element of a power system
App 20060198065 - Guzman-Casillas; Armando ; et al. | 2006-09-07 |
Protective relay with synchronized phasor measurement capability for use in electric power systems
Grant 6,845,333 - Anderson , et al. January 18, 2 | 2005-01-18 |
Instantaneous overcurrent element for heavily saturated current in a power system
Grant 6,757,146 - Benmouyal , et al. June 29, 2 | 2004-06-29 |
Protective relay with synchronized phasor measurement capability for use in electric power systems
App 20040093177 - Schweitzer, Edmund O. III ; et al. | 2004-05-13 |
Protective relay with synchronized phasor measurement capability for use in electric power systems
Grant 6,662,124 - Schweitzer, III , et al. December 9, 2 | 2003-12-09 |
Instantaneous overcurrent element for heavily saturated current in a power system
App 20030223171 - Benmouyal, Gabriel ; et al. | 2003-12-04 |
Protective Relay With Synchronized Phasor Measurement Capability For Use In Electric Power Systems
App 20030200038 - Schweitzer, Edmund O. III ; et al. | 2003-10-23 |
Voltage and current source selection system for use in the protection, automation and control of an electric power system
Grant 6,608,742 - Schweitzer, III , et al. August 19, 2 | 2003-08-19 |
System for estimating the frequency of the power signal on a power transmission line
Grant 6,603,298 - Guzman-Casillas , et al. August 5, 2 | 2003-08-05 |
System for estimating the frequency of the power signal on a power transmission line
App 20030011352 - Guzman-Casillas, Armando ; et al. | 2003-01-16 |
Voltage and current source selection system for use in the protection, automation and control of an electric power system
App 20030007299 - Schweitzer, Edmund O. III ; et al. | 2003-01-09 |
System for protection zone selection in microprocessor-based relays in an electric power system
Grant 6,411,865 - Qin , et al. June 25, 2 | 2002-06-25 |
System for power transformer differential protection
Grant 6,356,421 - Guzman-Casillas , et al. March 12, 2 | 2002-03-12 |
Restraint-type differential relay
Grant 6,341,055 - Guzman-Casillas January 22, 2 | 2002-01-22 |
Protective relay having out-of-step logic capability
Grant 5,731,943 - Roberts , et al. March 24, 1 | 1998-03-24 |
| 