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WO2002046730A3 - System and method for measuring the dielectric strength of a fluid - Google Patents

System and method for measuring the dielectric strength of a fluid Download PDF

Info

Publication number
WO2002046730A3
WO2002046730A3 PCT/US2001/046977 US0146977W WO0246730A3 WO 2002046730 A3 WO2002046730 A3 WO 2002046730A3 US 0146977 W US0146977 W US 0146977W WO 0246730 A3 WO0246730 A3 WO 0246730A3
Authority
WO
WIPO (PCT)
Prior art keywords
test
test gap
unit
pulse input
input port
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/US2001/046977
Other languages
French (fr)
Other versions
WO2002046730A8 (en
WO2002046730A2 (en
Inventor
Timothy L Cargol
Chathan M Cooke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Massachusetts Institute of Technology
Original Assignee
Massachusetts Institute of Technology
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 Massachusetts Institute of Technology filed Critical Massachusetts Institute of Technology
Priority to AU2002225977A priority Critical patent/AU2002225977A1/en
Publication of WO2002046730A2 publication Critical patent/WO2002046730A2/en
Publication of WO2002046730A8 publication Critical patent/WO2002046730A8/en
Publication of WO2002046730A3 publication Critical patent/WO2002046730A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • G01N33/2805—Oils, i.e. hydrocarbon liquids investigating the resistance to heat or oxidation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
    • G01N27/221—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance by investigating the dielectric properties
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
    • G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
    • G01R31/1281—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of liquids or gases

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Pathology (AREA)
  • Immunology (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

A system is disclosed for monitoring the quality of an internal fluid contained in an apparatus. The system includes a pulse input port, a test gap unit, and a reactive impedance unit. The pulse input port receives a test pulse input signal frm a pulse source. The test gap unit provides a test voltage across a test gap while the test gap unit is immersed in the internal fluid within the apparatus. The test gap means has an inherent capacitance. The reactive impedance unit provides an impedance in series with the inherent capacitance of the test gap unit that restricts transfer of current to the test gap, and is coupled to the pulse input port and coupled to the test gap unit.
PCT/US2001/046977 2000-12-06 2001-12-06 System and method for measuring the dielectric strength of a fluid Ceased WO2002046730A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002225977A AU2002225977A1 (en) 2000-12-06 2001-12-06 System and method for measuring the dielectric strength of a fluid

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US25169700P 2000-12-06 2000-12-06
US60/251,697 2000-12-06

Publications (3)

Publication Number Publication Date
WO2002046730A2 WO2002046730A2 (en) 2002-06-13
WO2002046730A8 WO2002046730A8 (en) 2002-08-01
WO2002046730A3 true WO2002046730A3 (en) 2003-03-20

Family

ID=22953030

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/046977 Ceased WO2002046730A2 (en) 2000-12-06 2001-12-06 System and method for measuring the dielectric strength of a fluid

Country Status (2)

Country Link
AU (1) AU2002225977A1 (en)
WO (1) WO2002046730A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2764375A1 (en) * 2011-10-05 2014-08-13 Wicor Americas Inc. Dielectric monitoring system and method therefor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3879657A (en) * 1972-08-23 1975-04-22 Economics Lab Electrical apparatus for minimizing polarization of conductivity cell electrodes
US3996512A (en) * 1974-04-19 1976-12-07 Josef Baur Container for receiving an insulating or cooling medium for electrical apparatus to be tested for resistance to electrical breakdown
SU1050098A1 (en) * 1981-06-08 1983-10-23 Научно-Исследовательский,Проектно-Конструкторский И Технологический Институт Производственного Объединения "Уралэлектротяжмаш" Им.В.И.Ленина Voltage pulse generator
US4663585A (en) * 1984-01-31 1987-05-05 Baur Pruf-und Messtechnik K.G. Apparatus for testing dielectric strength of materials
US4686857A (en) * 1983-03-04 1987-08-18 Kabushiki Kaisha Toyota Chuo Kenkyusho Method and apparatus for evaluating the performance of dielectric substances
GB2187290A (en) * 1986-01-31 1987-09-03 Perchem Ltd Determining breakdown of liquid samples

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3879657A (en) * 1972-08-23 1975-04-22 Economics Lab Electrical apparatus for minimizing polarization of conductivity cell electrodes
US3996512A (en) * 1974-04-19 1976-12-07 Josef Baur Container for receiving an insulating or cooling medium for electrical apparatus to be tested for resistance to electrical breakdown
SU1050098A1 (en) * 1981-06-08 1983-10-23 Научно-Исследовательский,Проектно-Конструкторский И Технологический Институт Производственного Объединения "Уралэлектротяжмаш" Им.В.И.Ленина Voltage pulse generator
US4686857A (en) * 1983-03-04 1987-08-18 Kabushiki Kaisha Toyota Chuo Kenkyusho Method and apparatus for evaluating the performance of dielectric substances
US4663585A (en) * 1984-01-31 1987-05-05 Baur Pruf-und Messtechnik K.G. Apparatus for testing dielectric strength of materials
GB2187290A (en) * 1986-01-31 1987-09-03 Perchem Ltd Determining breakdown of liquid samples

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section EI Week 198427, Derwent World Patents Index; Class U22, AN 1984-170048, XP002220056 *
SHARBAUGH ET AL.: "Progress in the field of electric breakdown in dielectric liquids", IEEE TRANS. ELECTR. INSUL., vol. EI-13, no. 4, 1978, pages 249 - 276, XP001119777 *
VENKATASESHAIAH ET AL.: "studies on the dielectric strength of transformer oil under oscillatory impulse voltages", 1996 IEEE SYMPOSIUM ON ELECTRICAL INSULATION, 19 July 1996 (1996-07-19), XP002220055 *

Also Published As

Publication number Publication date
WO2002046730A8 (en) 2002-08-01
AU2002225977A1 (en) 2002-06-18
WO2002046730A2 (en) 2002-06-13

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