US Patent No: 5,247,454

Number of patents in Portfolio can not be more than 2000

Reconfigurable circuit monitoring system

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Importance

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Abstract

A circuit monitoring system for a distributed power network employs waveform capturing techniques for efficient and highly accurate monitoring. The system includes a plurality of circuit monitors and a control station, which is coupled to each of the circuit monitors via a multi-drop communications link. Each of the circuit monitors is disposed adjacent an associated one of the branches in the network for sensing power parameters in the branches and for generating and transmitting data representing the power parameters to the control station The control station is used for generating monitoring commands to each of the circuit monitors to provide the system with full system control and evaluation capability. Each of the circuit monitors also includes EEPROM memory for storing and retaining operational data, sent from the control station, in the absence of power. This allows a microcomputer in the circuit monitor to read the retained data for analyzing the sensed power parameter.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SQUARE D COMPANYPALATINE, IL913

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Farrington, Ronald L Cedar Rapids, IA 12 394
Wallis, Lee D Murfreesboro, TN 9 271

Cited Art

Patent Info (Count) # Cites Year
 
Merlin Gerin (1)
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Nippon Zeon Co., Ltd. (1)
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Quadlogic Controls Corporation (1)
4,783,748 Method and apparatus for remote measurement 126 1987
 
UNDERSGROUND SYSTEMS, INC. (1)
4,855,671 Electrical power line and substation monitoring apparatus 85 1988
 
Other [Check patent profile for assignment information] (1)
4,709,339 Electrical power line parameter measurement apparatus and systems, including compact, line-mounted modules 129 1986

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
GENERAL ELECTRIC COMPANY (19)
7,301,738 Method and apparatus for minimally invasive network monitoring 1 2003
7,254,001 Circuit protection system 4 2003
7,151,329 Integrated protection, monitoring, and control system 11 2003
7,117,105 Method and apparatus for ground fault protection 5 2003
7,111,195 Method and system for external clock to obtain multiple synchronized redundant computers 3 2003
7,068,483 Circuit breaker lockout 1 2003
7,068,612 Method for communicating information bundled in digital message packets 17 2003
7,058,481 Method and apparatus for centrally-controlled electrical protection system architecture reliability improvement based on sensitivity analysis 1 2003
7,058,482 Data sample and transmission modules for power distribution systems 7 2003
7,043,340 Protection system for power distribution systems 4 2003
6,999,291 Method and apparatus for node electronics unit architecture 10 2003
6,985,784 Configuring a centrally controlled circuit breaker protection system 8 2003
6,909,942 Method for power distribution system components identification, characterization and rating 14 2003
6,892,115 Method and apparatus for optimized centralized critical control architecture for switchgear and power equipment 12 2003
6,892,145 Method and system for conditionally triggered system data capture 6 2003
7,532,955 Distributed protection system for power distribution systems 4 2005
7,636,616 Protection system for power distribution systems 3 2006
7,747,356 Integrated protection, monitoring, and control system 2 2006
8,213,144 Circuit protection system 1 2007
 
POWER MEASUREMENT LTD. (19)
5,736,847 Power meter for determining parameters of muliphase power lines 97 1994
5,650,936 Power monitor apparatus and method with object oriented structure 105 1994
5,828,576 Power monitor apparatus and method with object oriented structure 59 1997
6,185,508 Power meter for determining parameters of multi-phase power lines 62 1997
6,825,776 External I/O and communications interface for a revenue meter 15 1999
6,798,191 Revenue meter with a graphic user interface being operative to display scalable objects 23 1999
6,615,147 Revenue meter with power quality features 26 1999
6,611,922 Power system time synchronization device and method for sequence of event recording 19 1999
6,493,644 A-base revenue meter with power quality features 34 1999
6,397,155 Method and apparatus for automatically controlled gain switching of monitors 44 1999
6,186,842 Revenue meter bayonet assembly and method of attachment 33 1999
6,687,627 Electric charge storage apparatus and method for an intelligent electronic device 25 2001
6,694,270 Phasor transducer apparatus and system for protection, control, and management of electricity distribution systems 41 2002
6,792,364 Revenue meter with power quality features 21 2002
6,983,211 Revenue meter bayonet assembly and method of attachment 14 2002
7,248,977 Phasor transducer apparatus and system for protection, control, and management of electricity distribution systems 11 2003
7,174,258 Apparatus and system for protection, control, and management of electricity distribution systems using time synchronization 12 2003
7,006,934 Revenue meter with power quality features 20 2003
7,158,050 Revenue meter with fiber connection 14 2004
 
COOPER TECHNOLOGIES COMPANY (7)
7,369,029 Wireless communication fuse state indicator system and method 9 2004
8,059,005 Circuit protector monitoring assembly kit and method 0 2005
7,612,654 System and method for circuit protector monitoring and management 5 2005
7,391,299 Circuit protector monitoring and management system user interface method, system and program 13 2005
7,576,635 Circuit protector signal transmission, methods and system 5 2005
8,169,331 Circuit protector monitoring assembly 0 2007
8,134,445 RFID open fuse indicator, system, and method 0 2008
 
SQUARE D COMPANY (3)
5,831,428 Metering unit with integrated user programmable logic 29 1995
5,737,231 Metering unit with enhanced DMA transfer 33 1996
7,327,558 Front-accessible communications port for enclosed electrical equipment 6 2003
 
EATON CORPORATION (2)
5,587,917 Data collection and processing for digital AC power system monitor/analyzer 47 1994
5,943,201 Method and apparatus for setting trip profiles in electrical switches using a portable unit with a non-volatile memory 19 1997
 
HITACHI, LTD. (2)
5,963,457 Electrical power distribution monitoring system and method 73 1995
6,061,609 Electrical power distribution monitoring system and method 49 1999
 
BALLUFF, INC. (1)
5,903,426 Overvoltage protection apparatus for a data interface 30 1996
 
HUNT TECHNOLOGIES, INC. (1)
6,177,884 Integrated power line metering and communication method and apparatus 50 1998
 
LANDIS+GYR INC. (1)
6,757,628 Multi-level transformer and line loss compensator and method 3 1999
 
SAFRAN POWER UK LTD. (1)
6,710,482 Generator 3 2002
 
SIEMENS AKTIENGESELLSCHAFT (1)
6,604,006 Control device in a system and method for monitoring a controller 1 2000
 
Tempo Instrument, Inc. (1)
5,796,631 Method and apparatus for monitoring and characterizing power quality, faults and other phenomena in network power systems 17 1997
 
YOKOGAWA ELECTRIC CORPORATION (1)
5,301,121 Measuring electrical parameters of power line operation, using a digital computer 65 1991
 
Other [Check patent profile for assignment information] (1)
7,478,003 Revenue meter bayonet assembly and method of attachment 3 2005