WO2000073866A1 - Dispositif electronique intelligent pour surveiller les caracteristiques non electriques - Google Patents

Dispositif electronique intelligent pour surveiller les caracteristiques non electriques Download PDF

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Publication number
WO2000073866A1
WO2000073866A1 PCT/US2000/014409 US0014409W WO0073866A1 WO 2000073866 A1 WO2000073866 A1 WO 2000073866A1 US 0014409 W US0014409 W US 0014409W WO 0073866 A1 WO0073866 A1 WO 0073866A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrical characteristic
signal
electronic device
intelligent electronic
electrical
Prior art date
Application number
PCT/US2000/014409
Other languages
English (en)
Inventor
Esteban Santos
Robert M. Ricci
Original Assignee
General Electric Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Company filed Critical General Electric Company
Priority to EP00937765A priority Critical patent/EP1101155A1/fr
Priority to JP2001500920A priority patent/JP2003502001A/ja
Publication of WO2000073866A1 publication Critical patent/WO2000073866A1/fr

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
    • G05B23/0224—Process history based detection method, e.g. whereby history implies the availability of large amounts of data
    • G05B23/0227—Qualitative history assessment, whereby the type of data acted upon, e.g. waveforms, images or patterns, is not relevant, e.g. rule based assessment; if-then decisions
    • G05B23/0235—Qualitative history assessment, whereby the type of data acted upon, e.g. waveforms, images or patterns, is not relevant, e.g. rule based assessment; if-then decisions based on a comparison with predetermined threshold or range, e.g. "classical methods", carried out during normal operation; threshold adaptation or choice; when or how to compare with the threshold

Definitions

  • the present invention relates generally to intelligent electronic devices, e.g., electronic trip units, protective relays, energy meters, power analyzers, motor control center controllers and programmable logic controllers. More specifically, the present invention relates to a method of monitoring nonelectrical characteristics in an intelligent electronic device.
  • intelligent electronic devices e.g., electronic trip units, protective relays, energy meters, power analyzers, motor control center controllers and programmable logic controllers. More specifically, the present invention relates to a method of monitoring nonelectrical characteristics in an intelligent electronic device.
  • An electronic trip unit typically comprises voltage and current sensors, which provide analog signals indicative of the power line signals.
  • the analog signals are converted by an A/D (analog/digital) converter to digital signals which are processed by a microprocessor.
  • the trip unit further includes RAM (random access memory), ROM (read only memory) and EEPROM (electronic erasable programmable read only memory) all of which interface with the microprocessor.
  • the ROM includes trip unit application code, e.g., main functionality firmware, including initializing parameters, and boot code.
  • the EEPROM includes operational parameters for the application code.
  • Intelligent electronic devices protect various types of loads, e.g., electric motors, electric motor drives, transformers, and furnaces. Intelligent electronic devices typically monitor electrical characteristics of the protected loads via their voltage and current sensors. In a large facility, e.g., a manufacturing plant, many hundreds of intelligent electronic devices may be used to protect an even larger number of loads. Often the intelligent electronic devices are connected together though a communications network, e.g., a power management control system such as General Electric's Power Leader, to a computer or other remote monitoring device.
  • a communications network e.g., a power management control system such as General Electric's Power Leader
  • the intelligent electronic device determines a protective action based on preset programming. For example, the intelligent electronic device may initiate a circuit breaker trip, trigger an alarm, display the status of the load via local display monitor or send an event message to a remote monitoring device.
  • a protective action based on preset programming. For example, the intelligent electronic device may initiate a circuit breaker trip, trigger an alarm, display the status of the load via local display monitor or send an event message to a remote monitoring device.
  • safety and/or functionality of a protected load often depends on monitoring and maintaining non-electrical characteristics, e.g., temperature, humidity, and pressure, within acceptable threshold limits.
  • non-electrical characteristics e.g., temperature, humidity, and pressure
  • protected loads are often rated to operate at less than 85 "centigrade and 90% relative humidity.
  • monitoring non-electrical characteristics are useful for analysis purposes as well, e.g., predicting most likely future nonelectrical faults, prioritizing maintenance requirements of protected loads or determining load life and load component wear.
  • Prior art intelligent electronic devices are unable to monitor nonelectrical characteristics. Therefore they cannot analyze non-electrical characteristics, nor can they protect a load from non-electrical fault conditions, e.g., a non-electrical characteristic reaching a predetermined threshold. Consequently, additional protective devices, e.g., temperature controllers and dehumidifiers, are required to separately communicate with the protected load and/or an operator. In a large facility, these additional protective devices would require a separate communications network independent of the intelligent electronic devices' network.
  • a method of monitoring a non-electrical characteristic in an intelligent electronic device is presented.
  • the method generates a non-electrical characteristic signal indicative of a non-electrical characteristic of a protected load.
  • the method compares a relationship of the non-electrical characteristic signal with a predetermined threshold indicative of a non-electrical fault condition.
  • the method generates a protective action signal when the predetermined threshold is reached.
  • an intelligent electronic device for monitoring non-electrical characteristics comprises a sensor and a signal processor.
  • the sensor generates a non-electrical characteristic signal indicative of the non-electrical characteristic of a protected load.
  • the signal processor is responsive to the non-electrical characteristic signal, and has a memory for storing signals including program signals defining an executable program.
  • the program compares a relationship of the non-electrical characteristic signal with a predetermined threshold indicative of a non-electrical fault condition.
  • the program generates a protective action signal when the predetermined threshold is reached.
  • Trip unit 30 comprises a voltage sensor 32 which provides analog signals indicative of voltage measurements on a signal line 34 and a current sensor 36 which provides analog signals indicative of a current measurements on a signal line 38.
  • the analog signals on lines 34 and 38 are presented to an A/D (analog/digital) converter 40, which converts these analog signals to digital signals.
  • the digital signals are transferred over a bus 42 to a microprocessor (signal processor) 44, such being commercially available from the Hitachi Electronics Components Group (Hitachi's H8/300 family of microprocessors).
  • Trip unit 30 further includes RAM (random access memory) 46, ROM (read only memory) 48 and EEPROM (electronic erasable programmable read only memory) 50 all of which communicate with the microprocessor 44 over a control bus 52.
  • RAM random access memory
  • ROM read only memory
  • EEPROM electronic erasable programmable read only memory
  • A/D converter 40, ROM 48, RAM 46, or any combination thereof may be internal to microprocessor 44, as is well known.
  • EEPROM 50 is non-volatile so that system information and programming will not be lost during a power interruption or outage.
  • Data typically status of the circuit breaker, is displayed by a display 54 in response to display signals received from microprocessor 44 over control bus 52.
  • An output control device 56 in response to control signals received from microprocessor 44 over control bus 52, controls a trip module 58 via a line 60.
  • Trip module 58 controls separable contacts of a circuit breaker (not shown). When trip unit 30 detects a fault condition, trip module 58 will separate the contacts (a circuit breaker trip event) to interrupt current to a protected circuit such as load 68. Calibration, testing, programming and other features are accomplished through a communications I/O port 62, which communicates with microprocessor 44 over control bus 52.
  • a power supply 63 which is powered by the service electricity, provides appropriate power over a line 64 to the components of trip unit 30.
  • ROM 48 includes trip unit application code, e.g., main functionality firmware, including initializing parameters, and boot code.
  • the application code includes code for a monitoring method (algorithm) in accordance with the present invention.
  • EEPROM 50 includes operational parameter code, e.g., code for setting user defined parameters such as non-electrical fault condition thresholds, or action paths such as trip, alarm or status. These parameters may be stored in the trip unit at the factory and are selected to meet customers' requirements, but can also be remotely downloaded as described hereinafter.
  • the monitoring algorithm is run in real-time and is initiated preferably from the boot code at start up.
  • Non-electronic sensor 66 is mounted to a protected load 68 which is external to the electronic trip unit 30.
  • Sensor 66 monitors a desired nonelectrical characteristic, e.g., temperature, pressure or humidity, at the load.
  • Sensor 66 provides analog signals indicative of the non-electrical characteristic on a signal line 70.
  • the analog signals on line 70 are presented to an isolation buffer 72 which performs various protective functions, i.e., noise isolation protection, or protection from voltage swings outside of the operating parameters of low voltage components such as the microprocessor 44.
  • buffer 72 is shown external to trip unit 30. However, it will be understood by one skilled in the art that buffer 72 may also be internal to trip unit 30 as well.
  • Buffer 72 provides a buffered analog signal indicative of the non-electrical characteristic on a signal line 74.
  • the buffered analog signal is presented to the A D converter 40, which converts this analog signal to a digital signal indicative of the non- electrical characteristic.
  • the digital non-electrical characteristic signal is transferred over bus 42 to microprocessor 44 for further processing.
  • microprocessor 44 compares a relationship (processed) of the non-electrical characteristic signal to user defined thresholds to detect non-electrical fault conditions. For example, such non-electrical fault conditions may be to not exceed 85 °C or 90% relative humidity.
  • a defined threshold of the non-electrical fault condition is reached, the microprocessor 44 generates a signal to initiate a pre-programmed protective action.
  • a protective action may include initiating a circuit breaker trip event, triggering an alarm, displaying the status of the protected load on a monitor, or sending an event message to a remote monitoring device.
  • the relationship of the non-electrical characteristic is processed by microprocessor 44 for analysis purposes.
  • the data is analyzed within the electronic trip unit itself, or alternatively communicated to a remote monitoring device, e.g., a computer, through communications I/O port 62.
  • a remote monitoring device e.g., a computer
  • communications I/O port 62 may communicate through a network, e.g., a power management control system such as General Electric's Power Leader, to the remote monitoring device.
  • EEPROM 50 All of the aforementioned limits or settings are preferably stored in EEPROM 50 and can be altered by downloading desired settings via communications I/O port 62. This would include remotely downloading such data when the unit is connected to a system computer (not shown), either directly, over telephone lines, or any other suitable connection. It may also be preferred that EEPROM 50 comprises a flash memory whereby such data is flashed, as is well known.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Testing And Monitoring For Control Systems (AREA)

Abstract

La présente invention concerne un procédé de surveillance des caractéristiques non électroniques, c.-à-d. la température et l'humidité de pression d'une charge protégée dans un dispositif électronique intelligent. Ce procédé détecte une caractéristique non électronique de la charge protégée pour fournir un signal de caractéristique non électrique détecté indicatif de la caractéristique non électrique. Ce procédé traite le signal de caractéristique non électrique pour produire une relation du signal de caractéristique non électrique. Dans un des modes de réalisation, la relation du signal de caractéristique non électrique est comparée aux seuils définis par l'utilisateur pur détecter les pannes non électriques. Par exemple, de telles pannes non électriques peuvent ne pas dépasser 85 °C ou 90 % d'humidité relative. Dans une variante, la relation du signal de caractéristique non électrique est traitée pour des besoins d'analyse. Les données sont analysées dans l'unité de déplacement électronique même, ou communiquées à un dispositif de surveillance à distance, tel qu'un ordinateur par exemple.
PCT/US2000/014409 1999-05-28 2000-05-25 Dispositif electronique intelligent pour surveiller les caracteristiques non electriques WO2000073866A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP00937765A EP1101155A1 (fr) 1999-05-28 2000-05-25 Dispositif electronique intelligent pour surveiller les caracteristiques non electriques
JP2001500920A JP2003502001A (ja) 1999-05-28 2000-05-25 非電気特性を監視する知能形電子デバイス

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US32275799A 1999-05-28 1999-05-28
US09/322,757 1999-05-28

Publications (1)

Publication Number Publication Date
WO2000073866A1 true WO2000073866A1 (fr) 2000-12-07

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WO (1) WO2000073866A1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7711814B1 (en) 2004-12-13 2010-05-04 American Power Conversion Corporation Method and system for remote monitoring of a power supply device with user registration capability
US7958170B2 (en) 2002-05-03 2011-06-07 American Power Conversion Corporation Method and apparatus for collecting and displaying data associated with network devices
US7986224B2 (en) 2003-04-14 2011-07-26 American Power Conversion Corporation Environmental monitoring device
US8015255B2 (en) 2003-10-27 2011-09-06 American Power Conversion Corporation System and method for network device communication
US8145748B2 (en) 2004-12-13 2012-03-27 American Power Conversion Corporation Remote monitoring system
US8224953B2 (en) 1999-10-27 2012-07-17 American Power Conversion Corporation Method and apparatus for replay of historical data
US20120185436A1 (en) * 2011-01-13 2012-07-19 Lee Tony J Systems and methods for ied design templates
US8271626B2 (en) 2001-01-26 2012-09-18 American Power Conversion Corporation Methods for displaying physical network topology and environmental status by location, organization, or responsible party
US8990536B2 (en) 2011-06-01 2015-03-24 Schneider Electric It Corporation Systems and methods for journaling and executing device control instructions
US9479393B2 (en) 2014-08-04 2016-10-25 Schweitzer Engineering Laboratories, Inc. Relay configuration systems and methods
US9952103B2 (en) 2011-12-22 2018-04-24 Schneider Electric It Corporation Analysis of effect of transient events on temperature in a data center
US11076507B2 (en) 2007-05-15 2021-07-27 Schneider Electric It Corporation Methods and systems for managing facility power and cooling
CN115032491A (zh) * 2022-08-12 2022-09-09 国网山东省电力公司电力科学研究院 一种变压器非电量保护测试方法

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US7647202B2 (en) * 2006-07-05 2010-01-12 Arizona Public Service Company Method for exception-based notification of the condition of an apparatus
JP6424218B2 (ja) * 2013-07-10 2018-11-14 リバイブ エレクトロニクス, エルエルシーRevive Electronics, Llc 電子機器への電力を制御するための装置及び方法
CA3009047A1 (fr) 2014-12-23 2016-06-30 Revive Electronics, LLC Appareils et procedes pour commander l'alimentation vers des dispositifs electroniques

Citations (6)

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US4291355A (en) * 1979-07-30 1981-09-22 General Electric Company Programmable overload circuit
EP0437658A1 (fr) * 1990-01-17 1991-07-24 Siemens Aktiengesellschaft Dispositif de protection pour une machine électrique
US5399993A (en) * 1993-08-26 1995-03-21 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration High input impedance amplifier
US5502435A (en) * 1994-04-06 1996-03-26 Ralston; Douglas E. Method and system for monitoring circuit breaker gas pressure
FR2750246A1 (fr) * 1996-06-20 1997-12-26 Gec Alsthom T & D Sa Procede de surveillance d'un disjoncteur haute tension a circuit hydraulique de commande
US5907491A (en) * 1996-08-23 1999-05-25 Csi Technology, Inc. Wireless machine monitoring and communication system

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Publication number Priority date Publication date Assignee Title
US4291355A (en) * 1979-07-30 1981-09-22 General Electric Company Programmable overload circuit
EP0437658A1 (fr) * 1990-01-17 1991-07-24 Siemens Aktiengesellschaft Dispositif de protection pour une machine électrique
US5399993A (en) * 1993-08-26 1995-03-21 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration High input impedance amplifier
US5502435A (en) * 1994-04-06 1996-03-26 Ralston; Douglas E. Method and system for monitoring circuit breaker gas pressure
FR2750246A1 (fr) * 1996-06-20 1997-12-26 Gec Alsthom T & D Sa Procede de surveillance d'un disjoncteur haute tension a circuit hydraulique de commande
US5907491A (en) * 1996-08-23 1999-05-25 Csi Technology, Inc. Wireless machine monitoring and communication system

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8224953B2 (en) 1999-10-27 2012-07-17 American Power Conversion Corporation Method and apparatus for replay of historical data
US8271626B2 (en) 2001-01-26 2012-09-18 American Power Conversion Corporation Methods for displaying physical network topology and environmental status by location, organization, or responsible party
US8966044B2 (en) 2001-01-26 2015-02-24 Schneider Electric It Corporation Methods for displaying physical network topology and environmental status by location, organization, or responsible party
US7958170B2 (en) 2002-05-03 2011-06-07 American Power Conversion Corporation Method and apparatus for collecting and displaying data associated with network devices
US8019798B2 (en) 2002-05-03 2011-09-13 American Power Conversion Corporation Method and apparatus for collecting and displaying network device information
US8719319B2 (en) 2002-05-03 2014-05-06 Schneider Electric It Corporation Method and apparatus for collecting and displaying network device information
US7986224B2 (en) 2003-04-14 2011-07-26 American Power Conversion Corporation Environmental monitoring device
US8015255B2 (en) 2003-10-27 2011-09-06 American Power Conversion Corporation System and method for network device communication
US8145748B2 (en) 2004-12-13 2012-03-27 American Power Conversion Corporation Remote monitoring system
US7711814B1 (en) 2004-12-13 2010-05-04 American Power Conversion Corporation Method and system for remote monitoring of a power supply device with user registration capability
US9166870B2 (en) 2004-12-13 2015-10-20 Schneider Electric It Corporation Remote monitoring system
US11076507B2 (en) 2007-05-15 2021-07-27 Schneider Electric It Corporation Methods and systems for managing facility power and cooling
US11503744B2 (en) 2007-05-15 2022-11-15 Schneider Electric It Corporation Methods and systems for managing facility power and cooling
US8554739B2 (en) * 2011-01-13 2013-10-08 Schweitzer Engineering Laboratories Inc. Systems and methods for IED design templates
US20120185436A1 (en) * 2011-01-13 2012-07-19 Lee Tony J Systems and methods for ied design templates
US8990536B2 (en) 2011-06-01 2015-03-24 Schneider Electric It Corporation Systems and methods for journaling and executing device control instructions
US9952103B2 (en) 2011-12-22 2018-04-24 Schneider Electric It Corporation Analysis of effect of transient events on temperature in a data center
US9479393B2 (en) 2014-08-04 2016-10-25 Schweitzer Engineering Laboratories, Inc. Relay configuration systems and methods
CN115032491A (zh) * 2022-08-12 2022-09-09 国网山东省电力公司电力科学研究院 一种变压器非电量保护测试方法
CN115032491B (zh) * 2022-08-12 2022-11-01 国网山东省电力公司电力科学研究院 一种变压器非电量保护测试方法

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EP1101155A1 (fr) 2001-05-23
JP2003502001A (ja) 2003-01-14

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