WO2000067019A1 - Status detection apparatus and method for fluid-filled electrical equipment - Google Patents
Status detection apparatus and method for fluid-filled electrical equipment Download PDFInfo
- Publication number
- WO2000067019A1 WO2000067019A1 PCT/US2000/011121 US0011121W WO0067019A1 WO 2000067019 A1 WO2000067019 A1 WO 2000067019A1 US 0011121 W US0011121 W US 0011121W WO 0067019 A1 WO0067019 A1 WO 0067019A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fluid
- recited
- sensors
- electrical
- containment vessel
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; viscous liquids; paints; inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; viscous liquids; paints; inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2835—Oils, i.e. hydrocarbon liquids specific substances contained in the oil or fuel
- G01N33/2841—Oils, i.e. hydrocarbon liquids specific substances contained in the oil or fuel gas in oil, e.g. hydrogen in insulating oil
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; viscous liquids; paints; inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2888—Lubricating oil characteristics, e.g. deterioration
Definitions
- the invention relates generally to electrical equipment. More particularly, the invention relates to a status detection apparatus for determining operating status of electrical equipment in real time through measurement of various parameters of fluid surrounding components of the electrical equipment, and to electrical equipment incorporating the status detection apparatus.
- Electrical equipment particularly medium-voltage or high-voltage electrical distribution equipment, require a high degree of electrical and thermal insulation between components thereof. Accordingly, it is well known to encapsulate components of electrical equipment, such as coils of a transformer, in a containment vessel and to fill the containment vessel with a fluid.
- the fluid facilitates dissipation of heat generated by the components and can be circulated through a heat exchanger to efficiently lower the operating temperature of the components.
- the fluid also serves as electrical insulation between components or to supplement other forms of insulation disposed around the components, such as cellulose paper or other insulating materials. Any fluid having the desired electrical and thermal properties can be used.
- electrical equipment is filled with an oil, such as castor oil or mineral oil, or a synthetic "oil", such as chlorinated diphenyl, silicone, vegetable oil, or sul-fur hexaflouride.
- oil such as castor oil or mineral oil
- synthetic "oil" such as chlorinated diphenyl, silicone, vegetable oil, or sul-fur hexaflouride.
- a known method of monitoring the status of fluid-filled electrical equipment is to monitor various parameters of the fluid. For example, the temperature of the fluid and the total combustible gas (TCG) in the fluid is known to be indicative of the operating state of fluid-filled electrical equipment. Therefore, monitoring these parameters of the fluid can provide an indication of any incipient faults in the equipment. For example, it has been found that carbon monoxide and carbon dioxide increase in concentration with thermal aging and degradation of cellulosic insulation in electrical equipment. Hydrogen and various hydrocarbons (and derivatives thereof such as acetylene and ethylene) increase in concentration due to hot spots caused by circulating currents and dielectric breakdown such as corona and arcing.
- TCG total combustible gas
- MICROMONITORS INCTM and SYPROTECTM have each developed a gas sensor which resides in the drain valve, or other single locations, of a transformer and overcomes some of the limitations of off-line DGA.
- location data relating to a fault is not discernable with such a device because it is located in one predefined position and does not provide any indication of the position of the source of the gas, i.e., the fault.
- U.S. patent 5,591,321 discloses an array of semiconductor diode sensors, each for detecting a particular parameter. Also, distributed arrays of sensors have been used in various applications for detecting a single parameter, such as temperature.
- U.S. patents 5,191,206, 5,696,863, and 5,499,313 are exemplary of distributed temperature sensors.
- U. S. patent 4,827,487 discloses a distributed temperature sensor for electric motor stator windings. Distributed multiparameter sensing has been used in process control as exemplified by U.S. patent 5,586,305.
- U.S. patent 4,654,806 discloses an apparatus for monitoring transformers including a top oil temperature sensor and a hot spot temperature sensor located in a known hot spot of the transformer. However, this apparatus falls short of providing data required to localize faults.
- the invention is directed toward a status detection apparatus, for electrical equipment comprising a plurality of distributed multiparameter sensors in a containment vessel or other fluid filled region of the electrical equipment.
- the sensors are capable of providing data relating to plural parameters of the fluid simultaneously at different positions in the fluid filled region.
- the data provided by the sensors can be processed to permit localization of incipient faults when combined with known flow data of the fluid through the electrical equipment.
- a first aspect of the invention is an electrical apparatus, comprising a containment vessel configured to contain a fluid, at least one electrical component disposed in the containment vessel, and distributed multiparameter sensors disposed in the containment vessel.
- a second aspect of the invention is a status detection apparatus for detecting faults in electrical equipment of the type having a containment vessel configured to contain a fluid, and at least one electrical component disposed in the containment vessel.
- the status detection apparatus comprises distributed multiparameter sensors disposed in the containment vessel and configured to generate data indicative of sensed parameters, a data acquisition device for determining operating status of the electrical equipment, and means for conducting signals from the multiparameter sensors to the data acquisition device.
- a third aspect of the invention is an electrical transformer comprising a containment vessel, a transformer core having coils thereon, and distributed multiparameter sensors disposed in the containment vessel.
- a fourth aspect of the invention is a method of detecting operating status in electrical equipment of the type having a containment vessel, at least one electrical component in the containment vessel, and a fluid in the containment vessel surrounding the at least one electrical component. The method comprises the steps of sensing plural parameters of the fluid at plural sensing locations in the fluid simultaneously and determining operating status of the electrical equipment based on the results of the sensing step.
- Fig. 1 is a schematic illustration of a preferred embodiment of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
- Fig. 1 illustrates a preferred embodiment of the invention.
- Status detection system 10 comprises electrical equipment 12, an electrical distribution transformer in the preferred embodiment, and data acquisition device 30.
- Electrical equipment 12 comprises electrical components 16, including a core and coils/ windings of the transformer, containment vessel 14 surrounding components 16, radiator 18 in communication with containment vessel 14, drain port 24, and valve 26 for selectively sealing drain port 24.
- Containment vessel 14 is adapted to contain fluid F, such as oil, for cooling components 16. Fluid F circulates through containment vessel 14 and radiator 18 as schematically indicated by arrows in Fig. 1.
- Radiator 18 serves as a heat exchanger to cool fluid F and to thereby conduct heat away from components 16.
- Radiator 18 can include any known form of pipes, conduits, heat exchanging surfaces, cooling elements, pumps, or the like.
- radiator 18 in the preferred embodiment is illustrated schematically as having pipes or conduits separate from containment vessel 14, sides or other portions of containment vessel 14 can serve as the radiator to conduct heat away from fluid F and thus a separate radiator is not required. Cooling can be accomplished through thermal convection, thermal conduction, molecular convection of fluid F, or in any other manner.
- a plurality of multiparameter sensors 20 are spatially distributed throughout containment vessel 14 and/ or radiator 18 to sense various parameters of fluid F.
- sensors 20 are in contact with fluid F.
- the invention requires only that the sensors 20 be capable of measuring parameters of fluid F.
- the sensors can be in a contact or non contact relationship with fluid F depending on the type of sensors used, as discussed in greater detail below.
- sensors 20 can be positioned remotely from fluid F and can have sensing elements disposed in fluid F.
- sensors 20 can be entirely remote from fluid F and can monitor parameters in fluid F from a distance, such as through optical means or the like.
- sensors 20 are disposed throughout containment vessel 14, including a passage defined through component 16, and in portions of radiator 18.
- sensors 20 can be disposed at any location and can sense parameters of fluid F at any location as dictated by the type, size, and shape of the electrical equipment, and any other details of the practical application.
- sensors 20 are disposed at positions defining a three-dimensional grid within equipment 12.
- distributed sensors refers to a sensor or sensors that can measure a parameter simultaneously at more than one location.
- a distributed array of sensors can be plural sensors distributed spatially.
- multiparameter sensor refers to a sensor capable of measuring more than one parameter at a single location.
- a multiparameter sensor can in fact be plural single parameter sensors in close spatial relationship.
- distributed multiparameter sensors therefore refers to a sensor or sensors capable of measuring more than one parameter simultaneously at each of more than one location.
- the multiparameter sensors 20 of the invention can be plural spatially distributed of discrete multiparameter sensors or a continuous sensing layer or the like for which the output is decoded, by time division multiplexing for example, to produce an output for plural locations along the layer.
- Sensors 20 can be fixedly disposed in containment vessel 14 and/ or radiator 18. Alternatively, sensors 20 can be removably disposed in desired locations by being selectively inserted through sensor ports or other openings formed through walls of containment vessel 14 and/or radiator 18. Of course, in the latter configuration, proper seals should be provided to prevent leakage of fluid F from containment vessel 14 and/or radiator 18. Sensors 20 can be of any appropriate type. For example, each sensor 20 can be one or more of metal insulator semiconductor diode sensors, fiber optic probes, acoustic or optical waveguides, bimetal sensors, thin film sensors, or any other appropriate sensor or transducer for measuring the parameters noted below.
- sensors 20 If sensor 20 is electric or electronic in nature and disposed inside high EM field region 22 (indicated by a dotted line in Fig. 1), sensors 20 must have the proper electrical shielding. Optical or other types of sensors need not be electrically shielded regardless of location. Sensors 20 generate data or signals indicative of various parameters of fluid F.
- Data acquisition device 30 comprises data bus 32, processor 34, input device 36, and display 38.
- Sensors 20 are communicatively coupled to data bus 32 through appropriate conducting means. For example, if sensors 20 are electronic or produce electronic signals, electric conductors can extend from sensors 20 to an exterior of equipment 12. The conductors can terminate at any appropriate terminal strip, connector , or the like, for connection to data acquisition device 30. Coupling between sensors 20 and data acquisition device 30 can be accomplished by wires, fiber optic strands, radio frequency devices, or in any other known manner.
- Data bus 32 can receive signals from sensors 20 in any known manner through any known interface.
- data acquisition device 30 can be a personal computer and data bus 32 can receive signals through a serial port, parallel port, universal serial bus port, or the like.
- Data bus 32 can utilize any appropriate type of hardware and/ or software protocols for receiving data or signals from sensors 20.
- Data bus 32 can be any appropriate type of device for carrying data or signals from sensors 32, such as a standard ISA bus, DCI bus, GPIB bus, or a simple terminal strip.
- Data acquisition device 30 can communicate with sensor 12 over a remote or local communication link.
- Data acquisition device 30 can be any device capable of acquiring signals or data from sensors 20 and taking appropriate action thereon, such as sounding an alarm.
- data acquisition device 30 can be a personal computer, an industrial programmable controller, or any other type of logic device.
- Processor 34 can be any type of microprocessor based device, hardwired electric components, a dedicated logic device of any type, or the like.
- Processor 34 can include memory devices such as random access memory, magnetic memory, optical memory, or the like, for storing a control program, data, threshold values, alarm limits, and the like.
- Input device 36 can be any type of keyboard, switch or switches, or any other device for providing settings parameters or instructions to controller 34. Input device can be omitted.
- Display 38 can be any type of display for indicating operating status, such as an LCD or CRT display, a pilot lamp or series of pilot lamps, an audible alarm, or the like.
- Sensors 20 can be coupled directly to a display, such as a visible or audible alarm or indicator and, in such a case, processor 34 can be omitted.
- containment vessel 14 is fully or partially filled with fluid F, such as oil.
- sensors 20 are in contact with or otherwise can sense various parameters in fluid F at plural locations.
- the temperature of fluid F and the content of various gases, such as hydrogen, acetylene, carbon, monoxide, and ethylene are indicative of operational status of equipment 12, as discussed above.
- any parameter which is helpful in determining the operational status of equipment 12 can be sensed by all or some of sensors 20.
- Sensors 20 are capable of measuring plural parameters, i.e. are multiparameter sensors, and are distributed throughout fluid F, or configured to measure the plural parameters throughout fluid F, in a dimensional grid to provide a real time three-dimensional map of multiple parameters in fluid F.
- temperature and various gas concentrations can be measured simultaneously at different positions in the spatial grid and the measurement data or signals can be acquired by data acquisition system 30 in a known manner to determine an operating state of equipment 12, used to alter operation of equipment 12, or to take other appropriate action.
- Such a three-dimensional map when combined with well known fluid flows for the particular equipment, and temperature dependant diffusion properties for the particular gasses being detected, will allow location of incipient faults within the level of resolution of the spatial grid defined by the sensing positions in fluid F of sensors F.
- the resolution can be increased by placing sensors 20 closer together or otherwise making the sensing positions closer together, and providing more sensors 20 if necessary, to increase the accuracy of the position detection of faults.
- the redundancy of sensors 20 allows sensing of parameters even when one or a few of sensors 20 fails.
- the time evolution of the three-dimensional map can provide additional information relating to the types of gas present in fluid F because the known diffusion rates of various gases are different.
- the invention can be applied to any fluid filled electrical equipment.
- Sensor data or signals can be processed in any way to provide indication of incipient faults or other status of the electrical equipment based on empirical or mathematical models.
- the data acquisition device can be local, i.e closely situated with respect to the electrical equipment, or remote, i.e., located at a remote location with respect to the electrical equipment. Histories of the values of the various parameters can be compiled to assist further in fault determination.
- the various sensors can be polled at regular intervals and the intervals can be increased at times of heavy load on the equipment or upon indication of an abnormal state of the equipment.
- the load condition of the equipment can be detected and correlated to temperature and gas detection. Other parameters such as fluid pressure and viscosity, noise generated by the equipment, and the like can be detected also.
- the invention can be used to determine and/or check fluid flow models of electrical equipment by injecting gas or other detectable substances into the fluid and determining the change in the three-dimensional map of the substance in the fluid over time.
- the sensors or sensing locations do not necessarily have to define a grid. Any appropriate spatial distribution can be used to sense parameters at desired positions.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0010695-0A BR0010695B1 (en) | 1999-04-30 | 2000-04-25 | apparatus and status detection method for fluid-filled electrical equipment. |
JP2000615807A JP5196692B2 (en) | 1999-04-30 | 2000-04-25 | Apparatus and method for detecting the state of fluid-filled electrical equipment |
DE60003675T DE60003675T2 (en) | 1999-04-30 | 2000-04-25 | CONDITION DETECTING DEVICE AND METHOD FOR LIQUID-FILLED ELECTRICAL SYSTEM |
CA002370174A CA2370174C (en) | 1999-04-30 | 2000-04-25 | Status detection apparatus and method for fluid-filled electrical equipment |
MXPA01010907A MXPA01010907A (en) | 1999-04-30 | 2000-04-25 | Status detection apparatus and method for fluid-filled electrical equipment. |
EP00926362A EP1177437B1 (en) | 1999-04-30 | 2000-04-25 | Status detection apparatus and method for fluid-filled electrical equipment |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/302,299 | 1999-04-30 | ||
US09/302,299 US6494617B1 (en) | 1999-04-30 | 1999-04-30 | Status detection apparatus and method for fluid-filled electrical equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000067019A1 true WO2000067019A1 (en) | 2000-11-09 |
Family
ID=23167151
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2000/011121 WO2000067019A1 (en) | 1999-04-30 | 2000-04-25 | Status detection apparatus and method for fluid-filled electrical equipment |
Country Status (10)
Country | Link |
---|---|
US (1) | US6494617B1 (en) |
EP (1) | EP1177437B1 (en) |
JP (1) | JP5196692B2 (en) |
AR (1) | AR028825A1 (en) |
BR (1) | BR0010695B1 (en) |
CA (1) | CA2370174C (en) |
DE (1) | DE60003675T2 (en) |
ES (1) | ES2202118T3 (en) |
MX (1) | MXPA01010907A (en) |
WO (1) | WO2000067019A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003075294A1 (en) * | 2002-03-01 | 2003-09-12 | Anil Kohli | On-line detection and measurement system for gases in oil-filled electrical equipment |
EP2181320A4 (en) * | 2007-08-06 | 2016-10-26 | Arizona Public Service Co | Method and system for transformer dissolved gas harmonic regression analysis |
Families Citing this family (42)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19935515A1 (en) * | 1999-07-28 | 2001-02-01 | Abb Patent Gmbh | Device for measuring the contact pressure of a winding press element in a power transformer |
GB0019176D0 (en) * | 2000-08-05 | 2000-09-27 | Cambridge Material Science Lim | Monitoring thermal events |
AU2003241519A1 (en) * | 2002-05-21 | 2003-12-12 | Acrolon Technologies, Inc. | System and method for temperature sensing and monitoring |
US7530257B2 (en) * | 2002-09-27 | 2009-05-12 | Honeywell International Inc. | Phased micro analyzer VIII |
US20040223882A1 (en) * | 2002-09-27 | 2004-11-11 | Ulrich Bonne | Micro-plasma sensor system |
US7494326B2 (en) * | 2003-12-31 | 2009-02-24 | Honeywell International Inc. | Micro ion pump |
US20050063865A1 (en) * | 2002-09-27 | 2005-03-24 | Ulrich Bonne | Phased VII micro fluid analyzer having a modular structure |
US7104112B2 (en) * | 2002-09-27 | 2006-09-12 | Honeywell International Inc. | Phased micro analyzer IV |
US7000452B2 (en) * | 2002-09-27 | 2006-02-21 | Honeywell International Inc. | Phased micro fluid analyzer |
US20040224422A1 (en) * | 2002-09-27 | 2004-11-11 | Ulrich Bonne | Phased micro analyzer III, IIIA |
WO2004029602A2 (en) * | 2002-09-27 | 2004-04-08 | Honeywell International Inc. | Phased micro analyser |
US6837118B2 (en) * | 2002-12-05 | 2005-01-04 | Honeywell International Inc. | Health monitor |
US6842718B2 (en) * | 2003-02-06 | 2005-01-11 | General Electric Company | Intelligent auxiliary cooling system |
US9029028B2 (en) | 2003-12-29 | 2015-05-12 | Honeywell International Inc. | Hydrogen and electrical power generator |
US20050142035A1 (en) * | 2003-12-31 | 2005-06-30 | Ulrich Bonne | Micro-discharge sensor system |
US7502109B2 (en) | 2005-05-17 | 2009-03-10 | Honeywell International Inc. | Optical micro-spectrometer |
US7578167B2 (en) * | 2005-05-17 | 2009-08-25 | Honeywell International Inc. | Three-wafer channel structure for a fluid analyzer |
US7339447B2 (en) * | 2005-12-01 | 2008-03-04 | Unelectra International Corp. | High-voltage transformer coil with acoustic wave guiding function |
DE102007015683A1 (en) * | 2007-03-31 | 2008-10-02 | Abb Research Ltd. | Method for determining spatially distributed physical and chemical quantities of a fluid |
DE102007026175B4 (en) * | 2007-06-05 | 2009-10-01 | Areva Energietechnik Gmbh | Method for determining the aging of an electrical transformer |
US20080312557A1 (en) * | 2007-06-18 | 2008-12-18 | Dong Uk Cho | Method and system for measuring urinary flow rate |
US8002957B2 (en) * | 2008-01-02 | 2011-08-23 | General Electric Company | Sensor apparatus for measuring and detecting acetylene and hydrogen dissolved in a fluid |
AU2009200007A1 (en) * | 2008-01-10 | 2009-07-30 | Chk Gridsense Pty Ltd | A transformer and a method of monitoring an operation property of the transformer |
CA2619920A1 (en) * | 2008-02-06 | 2009-08-06 | Hydro-Quebec | Method for measuring the temperature of the hot spot in an electric device containing oil |
KR101280571B1 (en) | 2008-12-19 | 2013-07-02 | 도트 메트릭스 테크놀로지스, 인코포레이티드 | Systems and methods for performing the bacterial disinfection of a fluid using point radiation sources |
US20100277869A1 (en) * | 2009-09-24 | 2010-11-04 | General Electric Company | Systems, Methods, and Apparatus for Cooling a Power Conversion System |
EP2420845B1 (en) * | 2010-08-19 | 2014-12-10 | Abb Ag | System for generating / collecting, saving and making available data from an electric facility comprising a cooling or working liquid |
US8836523B2 (en) | 2011-05-20 | 2014-09-16 | General Electric Company | Fault gas alarm system |
US8405991B2 (en) * | 2011-05-20 | 2013-03-26 | General Electric Company | Heat transfer element temperature variation system |
US9046423B2 (en) * | 2012-08-01 | 2015-06-02 | Qualitrol Company, Llc | Hybrid mechanical and electrical transformer monitor |
KR101990780B1 (en) * | 2012-11-01 | 2019-06-19 | 한국전력공사 | Apparatus for measuring dissolved gas concentrations in oil filled transformer and method thereof |
US11338048B2 (en) | 2012-12-11 | 2022-05-24 | Aquisense Technologies Llc | Apparatus for irradiation |
EP2989705B1 (en) * | 2013-04-22 | 2021-12-22 | Hitachi Energy Switzerland AG | Method and apparatus for defect pre-warning of power device |
EP2899728B2 (en) | 2014-01-22 | 2019-11-13 | ABB Schweiz AG | A device comprising a high voltage apparatus including a fluid and equipment for detecting one or more physical properties of the fluid |
US20160064142A1 (en) * | 2014-08-26 | 2016-03-03 | Roman Manufacturing, Inc. | Transformer with integrated fluid flow sensor |
DE102016219378A1 (en) * | 2016-10-06 | 2018-04-12 | Siemens Aktiengesellschaft | Electrical device with different degrees of cooled encapsulation spaces |
DE102016219406A1 (en) | 2016-10-06 | 2018-04-12 | Siemens Aktiengesellschaft | Electrical device with several cooling units |
EP3563134A4 (en) * | 2016-12-31 | 2020-07-15 | ABB Schweiz AG | Systems and methods for monitoring components in a power transformer or the like |
US10151695B2 (en) | 2017-03-16 | 2018-12-11 | Oetiker Ny, Inc. | Optical assurance cap |
DE102018201488A1 (en) | 2018-01-31 | 2019-08-01 | Siemens Aktiengesellschaft | Electrical device with pressing plates for clamping a magnetizable core |
JP7385104B2 (en) * | 2019-07-04 | 2023-11-22 | 富士通株式会社 | Combustion stop device and liquid immersion cooling system |
EP3767651A1 (en) * | 2019-07-17 | 2021-01-20 | Siemens Aktiengesellschaft | Method for operating a cooling system of a transformer |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3821605A (en) * | 1972-08-10 | 1974-06-28 | Westinghouse Electric Corp | Remote transformer monitoring system |
WO1998033066A1 (en) * | 1997-01-29 | 1998-07-30 | The A.R.T. Group Incorporated | On-line method and apparatus for determining the condition of circulating fluids |
Family Cites Families (93)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2795779A (en) | 1954-12-20 | 1957-06-11 | Westinghouse Electric Corp | Transformer overload indicators |
US2917701A (en) * | 1957-08-02 | 1959-12-15 | Mc Graw Edison Co | Forced-cooled transformer having winding temperature relay |
US3144770A (en) * | 1961-01-30 | 1964-08-18 | Gen Electric | Means for determining an internal condition in electrical apparatus |
US3680359A (en) | 1968-05-02 | 1972-08-01 | Mc Graw Edison Co | Transformer having incipient fault detector |
JPS5145770B1 (en) | 1970-08-27 | 1976-12-06 | ||
US3797314A (en) * | 1972-07-10 | 1974-03-19 | Asea Ab | Means for determining the top oil temperature in transformers |
SE370793B (en) * | 1973-03-01 | 1974-10-28 | Asea Ab | |
US3832600A (en) | 1973-05-17 | 1974-08-27 | Westinghouse Electric Corp | Transformer internal fault detector |
US3864628A (en) | 1973-05-29 | 1975-02-04 | Inst Gas Technology | Selective solid-state gas sensors and method |
US3866460A (en) | 1973-05-30 | 1975-02-18 | Westinghouse Electric Corp | Gas detector for fluid-filled electrical apparatus |
US3855503A (en) | 1973-09-26 | 1974-12-17 | Westinghouse Electric Corp | Remotely monitored and controlled transformer |
US3960017A (en) * | 1975-02-10 | 1976-06-01 | Qualitrol Corporation | Thermometer insertable in winding of fluid cooled transformer |
US4236404A (en) | 1976-08-31 | 1980-12-02 | General Electric Company | Device for monitoring dissolved gases in electrical insulating liquids such as transformer oils |
AT345014B (en) * | 1976-10-08 | 1978-08-25 | Elin Union Ag | TEMPERATURE MEASURING DEVICE FOR TRANSFORMERS AND REACTORS |
US4058373A (en) | 1977-02-18 | 1977-11-15 | Electric Power Research Institute | Combustible gas-in-oil detector |
CA1098187A (en) * | 1977-02-23 | 1981-03-24 | George F. Mitchell, Jr. | Vaporization cooled and insulated electrical inductive apparatus |
US4112737A (en) | 1977-04-27 | 1978-09-12 | Morgan Schaffer Corporation | Transformer fault detection |
US4129501A (en) | 1977-09-07 | 1978-12-12 | Haynes Edward M | Method and apparatus for detecting water in oil |
US4179927A (en) * | 1977-09-28 | 1979-12-25 | Electric Power Research Institute, Inc. | Temperature sensing device |
JPS5466194A (en) | 1977-11-04 | 1979-05-28 | Kuraray Co | Fet sensor |
US4232551A (en) * | 1979-03-19 | 1980-11-11 | General Electric Company | Leak detector for vaporization cooled transformers |
CA1167279A (en) | 1980-05-20 | 1984-05-15 | Katuo Sugawara | System for monitoring abnormality of oil-filled electric devices |
US4347732A (en) | 1980-08-18 | 1982-09-07 | Leary David J | Gas monitoring apparatus |
US4394635A (en) * | 1981-04-16 | 1983-07-19 | General Electric Company | Method for determining dissolved gas concentrations in dielectric coolants |
US4508461A (en) | 1981-09-22 | 1985-04-02 | Westinghouse Electric Corp. | Distributed fiber optic temperature monitoring apparatus and method |
US4446420A (en) | 1982-01-28 | 1984-05-01 | Hydro Quebec | Method and device for detecting and locating fault and/or partial discharges in a gas-insulated electrical equipment |
JPS58158551A (en) * | 1982-03-16 | 1983-09-20 | Kanegafuchi Chem Ind Co Ltd | Method for measuring combustible component |
US4483631A (en) * | 1982-08-02 | 1984-11-20 | Hri, Inc. | Multiple thermocouple system for high temperature reactors |
US5696863A (en) | 1982-08-06 | 1997-12-09 | Kleinerman; Marcos Y. | Distributed fiber optic temperature sensors and systems |
US5363463A (en) | 1982-08-06 | 1994-11-08 | Kleinerman Marcos Y | Remote sensing of physical variables with fiber optic systems |
AT378623B (en) * | 1982-11-15 | 1985-09-10 | Elin Union Ag | DEVICE FOR THE THERMAL MONITORING OF LIQUID-COOLED TRANSFORMERS AND THROTTLE COILS |
JPS6058601A (en) * | 1983-09-12 | 1985-04-04 | Toshiba Corp | Monitoring apparatus for oil-immersed electric apparatus |
US4654806A (en) | 1984-03-30 | 1987-03-31 | Westinghouse Electric Corp. | Method and apparatus for monitoring transformers |
US4517468A (en) | 1984-04-30 | 1985-05-14 | Westinghouse Electric Corp. | Diagnostic system and method |
US4644479A (en) | 1984-07-31 | 1987-02-17 | Westinghouse Electric Corp. | Diagnostic apparatus |
JPS6273607A (en) * | 1985-09-27 | 1987-04-04 | Toshiba Corp | Abnormality detection device for oil-immersed apparatus |
JP2510498B2 (en) | 1985-10-14 | 1996-06-26 | 東京電力株式会社 | Transformer failure detection method and device |
US4754405A (en) | 1986-02-14 | 1988-06-28 | Qualitrol Corporation | Tri-phase electronic temperature controller |
GB8606045D0 (en) | 1986-03-12 | 1986-04-16 | Emi Plc Thorn | Gas sensitive device |
US4763514A (en) | 1986-05-14 | 1988-08-16 | Mitsubishi Denki Kabushiki Kaisha | Monitoring equipment for dissolved gas in insulating oil |
US4730479A (en) | 1986-06-23 | 1988-03-15 | The Standard Oil Company | Temperature and humidity compensation for gas detection apparatus |
IT1196798B (en) | 1986-11-24 | 1988-11-25 | Cselt Centro Studi Lab Telecom | TEMPERATURE DISTRIBUTED SENSOR USING AN OPTICAL FIBER AS A SENSITIVE ELEMENT |
US4890478A (en) | 1987-09-11 | 1990-01-02 | Westinghouse Electric Corp. | Gas-in-oil monitoring apparatus and method |
US4827487A (en) | 1987-12-11 | 1989-05-02 | Westinghouse Electric Corp. | Distributed temperature sensing system for stator windings |
US4823224A (en) | 1988-01-21 | 1989-04-18 | Qualitrol Corporation | Rapid pressure rise circuit |
US5132920A (en) | 1988-02-16 | 1992-07-21 | Westinghouse Electric Corp. | Automated system to prioritize repair of plant equipment |
US4944178A (en) | 1988-04-18 | 1990-07-31 | Nissin Electric Co., Ltd | Apparatus and method for measuring dissolved gas in oil |
US4964125A (en) | 1988-08-19 | 1990-10-16 | Hughes Aircraft Company | Method and apparatus for diagnosing faults |
US5099436A (en) | 1988-11-03 | 1992-03-24 | Allied-Signal Inc. | Methods and apparatus for performing system fault diagnosis |
US4947104A (en) | 1989-01-19 | 1990-08-07 | Stephen C. Pyke | Device and method for detection of fluid concentration utilizing charge storage in a MIS diode |
US5018075A (en) | 1989-03-24 | 1991-05-21 | Bull Hn Information Systems Inc. | Unknown response processing in a diagnostic expert system |
DE3914860A1 (en) | 1989-05-07 | 1990-11-08 | Hartmann Hans | HYDRAULIC DRIVE DEVICE |
US5113277A (en) | 1989-06-22 | 1992-05-12 | Hitachi Cable Limited | Fiber optic distributed temperature sensor system |
US4953387A (en) | 1989-07-31 | 1990-09-04 | The Regents Of The University Of Michigan | Ultrathin-film gas detector |
US5225395A (en) | 1989-08-11 | 1993-07-06 | Kabushiki Kaisha Toshiba | Supervisory system for superconductive transformer |
US5123017A (en) | 1989-09-29 | 1992-06-16 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Remote maintenance monitoring system |
US5062092A (en) | 1989-11-24 | 1991-10-29 | General Electric Company | Jukebox having rotatable disk stack |
FR2656098B1 (en) | 1989-12-20 | 1992-04-24 | Inst Francais Du Petrole | DEVICE FOR STUDYING THE AGING OF A FLUID IN CIRCULATION, UNDER SPECIFIC CONDITIONS IMPOSED. |
JP3268529B2 (en) | 1990-03-14 | 2002-03-25 | 株式会社日立製作所 | Knowledge database processing system and expert system |
JPH03269215A (en) * | 1990-03-19 | 1991-11-29 | Hitachi Ltd | Measured-value displaying apparatus |
US5035511A (en) | 1990-04-10 | 1991-07-30 | The Babcock & Wilcox Company | Distributed fiber optic temperature sensor based on time domain transmission |
JP2878387B2 (en) * | 1990-05-10 | 1999-04-05 | 株式会社ジャパンエナジー | Insulation material deterioration diagnosis device |
DE69121789T2 (en) | 1990-06-04 | 1997-04-03 | Hitachi Ltd | Control device for controlling a controlled system and control method therefor |
US5286109A (en) | 1990-06-28 | 1994-02-15 | Schlumberger Industries Limited | Distributed temperature sensor |
JPH04177710A (en) * | 1990-11-13 | 1992-06-24 | Toshiba Corp | Abnormality diagnosis device of gas insulation equipment |
US5133046A (en) | 1991-01-03 | 1992-07-21 | Pickard, Lowe And Carrick (Plc) | Computer-based diagnostic expert system organized according to Bayesian theory |
US5078437A (en) | 1991-03-05 | 1992-01-07 | Abb Power T&D Company, Inc. | Transformer having an integral cabinet with door latching and locking apparatus |
US5191206A (en) | 1991-04-16 | 1993-03-02 | Electric Power Research Institute, Inc. | Distributed fiber optic sensor using clad material light backscattering |
US5255208A (en) | 1991-08-08 | 1993-10-19 | Aeg Westinghouse Transportation Systems, Inc. | On-line processor based diagnostic system |
US5414645A (en) | 1991-10-25 | 1995-05-09 | Mazda Motor Corporation | Method of fault diagnosis in an apparatus having sensors |
FR2684248B1 (en) | 1991-11-22 | 1997-04-30 | Pioch Sa | ELECTRONIC APPARATUS FOR MEASURING AND PROTECTING THE OPERATION OF THE OIL TRANSFORMER. |
US5261747A (en) * | 1992-06-22 | 1993-11-16 | Trustees Of Dartmouth College | Switchable thermoelectric element and array |
WO1994010553A1 (en) | 1992-10-23 | 1994-05-11 | Optex Biomedical, Inc. | Fibre-optic probe for the measurement of fluid parameters |
US5400018A (en) | 1992-12-22 | 1995-03-21 | Caterpillar Inc. | Method of relaying information relating to the status of a vehicle |
US5445347A (en) | 1993-05-13 | 1995-08-29 | Hughes Aircraft Company | Automated wireless preventive maintenance monitoring system for magnetic levitation (MAGLEV) trains and other vehicles |
US5396172A (en) | 1993-07-20 | 1995-03-07 | Ontario Hydro | Transformer fault analyzer |
US5591321A (en) | 1993-11-02 | 1997-01-07 | Electric Power Research Institute | Detection of fluids with metal-insulator-semiconductor sensors |
US5417821A (en) | 1993-11-02 | 1995-05-23 | Electric Power Research Institute | Detection of fluids with metal-insulator-semiconductor sensors |
US5566092A (en) | 1993-12-30 | 1996-10-15 | Caterpillar Inc. | Machine fault diagnostics system and method |
JPH07230929A (en) * | 1994-02-16 | 1995-08-29 | Meidensha Corp | Internal failure-diagnosing method for oil immersed stationary electric machine |
US5448772A (en) | 1994-08-29 | 1995-09-05 | Motorola, Inc. | Stacked double balanced mixer circuit |
US5586305A (en) | 1994-10-21 | 1996-12-17 | Hewlett-Packard Company | Smart distributed measurement and control system with a flexible architecture |
JPH08124751A (en) * | 1994-10-25 | 1996-05-17 | Mitsubishi Electric Corp | Method for diagnosing service life and abnormality of oil-immersed electric equipment |
DE69513937T2 (en) | 1994-11-17 | 2000-07-20 | Alcatel Sa | Method for measuring and detecting physical quantities using a multi-point sensor |
JPH08273939A (en) * | 1995-03-30 | 1996-10-18 | Hitachi Ltd | Gas-insulated transformer |
US5806011A (en) | 1995-12-04 | 1998-09-08 | General Electric Company | Method and apparatus for performance based assessment of locomotive diesel engines |
US5659126A (en) | 1996-04-19 | 1997-08-19 | Farber; Milton | Gas chromatograph techniques for on-line testing of transformer faults |
US5775808A (en) * | 1996-06-19 | 1998-07-07 | Applied Materials, Inc. | Apparatus for real-time, in situ measurement of temperature and a method of fabricating and using same |
CA2180233C (en) | 1996-06-28 | 2000-09-26 | Jean-Pierre Gibeault | Method and apparatus for thermally inducing circulation of fluid between the interior of a system and a fluid pocket attached thereto |
US5845272A (en) | 1996-11-29 | 1998-12-01 | General Electric Company | System and method for isolating failures in a locomotive |
US5783152A (en) | 1997-03-24 | 1998-07-21 | The United States Of America As Represented By The United States Department Of Energy | Thin-film fiber optic hydrogen and temperature sensor system |
EP0932034B1 (en) * | 1998-01-27 | 2004-06-09 | Michael Hesky GmbH | Temperature measuring and monitoring device |
US6157282A (en) * | 1998-12-29 | 2000-12-05 | Square D Company | Transformer cooling method and apparatus therefor |
-
1999
- 1999-04-30 US US09/302,299 patent/US6494617B1/en not_active Expired - Fee Related
-
2000
- 2000-04-25 JP JP2000615807A patent/JP5196692B2/en not_active Expired - Fee Related
- 2000-04-25 EP EP00926362A patent/EP1177437B1/en not_active Expired - Lifetime
- 2000-04-25 BR BRPI0010695-0A patent/BR0010695B1/en not_active IP Right Cessation
- 2000-04-25 ES ES00926362T patent/ES2202118T3/en not_active Expired - Lifetime
- 2000-04-25 CA CA002370174A patent/CA2370174C/en not_active Expired - Fee Related
- 2000-04-25 DE DE60003675T patent/DE60003675T2/en not_active Expired - Lifetime
- 2000-04-25 MX MXPA01010907A patent/MXPA01010907A/en active IP Right Grant
- 2000-04-25 WO PCT/US2000/011121 patent/WO2000067019A1/en active IP Right Grant
- 2000-04-28 AR ARP000102077A patent/AR028825A1/en not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3821605A (en) * | 1972-08-10 | 1974-06-28 | Westinghouse Electric Corp | Remote transformer monitoring system |
WO1998033066A1 (en) * | 1997-01-29 | 1998-07-30 | The A.R.T. Group Incorporated | On-line method and apparatus for determining the condition of circulating fluids |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003075294A1 (en) * | 2002-03-01 | 2003-09-12 | Anil Kohli | On-line detection and measurement system for gases in oil-filled electrical equipment |
EP2181320A4 (en) * | 2007-08-06 | 2016-10-26 | Arizona Public Service Co | Method and system for transformer dissolved gas harmonic regression analysis |
Also Published As
Publication number | Publication date |
---|---|
CA2370174A1 (en) | 2000-11-09 |
EP1177437B1 (en) | 2003-07-02 |
BR0010695B1 (en) | 2012-11-27 |
DE60003675D1 (en) | 2003-08-07 |
US6494617B1 (en) | 2002-12-17 |
BR0010695A (en) | 2002-04-23 |
JP5196692B2 (en) | 2013-05-15 |
AR028825A1 (en) | 2003-05-28 |
JP2002543605A (en) | 2002-12-17 |
ES2202118T3 (en) | 2004-04-01 |
DE60003675T2 (en) | 2004-04-15 |
MXPA01010907A (en) | 2002-05-06 |
CA2370174C (en) | 2009-03-24 |
EP1177437A1 (en) | 2002-02-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1177437B1 (en) | Status detection apparatus and method for fluid-filled electrical equipment | |
EP1085534B1 (en) | Intelligent analysis system and method for fluid-filled electrical equipment | |
EP1085635A2 (en) | Fluid-filled electrical equipment intelligent analysis system and method | |
EP2691748B1 (en) | Combination of hydrogen and pressure sensors | |
EP2663841B1 (en) | Combined hydrogen and pressure sensor assembly | |
EP2691746B1 (en) | Combined hydrogen and pressure sensor assembly | |
KR101343211B1 (en) | Sensor mounting into the temperature well of a transformer | |
MXPA01001695A (en) | Method and system of intelligent analysis for electrical | |
MXPA01001693A (en) | Method and system of intelligent analysis for electrical | |
BR112013024405B1 (en) | COMBINED SENSOR ASSEMBLY FOR HYDROGEN AND PRESSURE |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): BR CA JP MX |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
ENP | Entry into the national phase |
Ref document number: 2370174 Country of ref document: CA Ref country code: CA Ref document number: 2370174 Kind code of ref document: A Format of ref document f/p: F |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2000926362 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref country code: JP Ref document number: 2000 615807 Kind code of ref document: A Format of ref document f/p: F |
|
WWE | Wipo information: entry into national phase |
Ref document number: PA/a/2001/010907 Country of ref document: MX |
|
WWP | Wipo information: published in national office |
Ref document number: 2000926362 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 2000926362 Country of ref document: EP |