WO1995018385A1 - High voltage dc-biased ac test system - Google Patents

High voltage dc-biased ac test system Download PDF

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Publication number
WO1995018385A1
WO1995018385A1 PCT/US1994/014904 US9414904W WO9518385A1 WO 1995018385 A1 WO1995018385 A1 WO 1995018385A1 US 9414904 W US9414904 W US 9414904W WO 9518385 A1 WO9518385 A1 WO 9518385A1
Authority
WO
WIPO (PCT)
Prior art keywords
voltage
biased
cable installation
high voltage
test system
Prior art date
Application number
PCT/US1994/014904
Other languages
French (fr)
Inventor
Matthew S. Mashikian
Robert B. Northrop
Dong Sui
Original Assignee
The University Of Connecticut
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 The University Of Connecticut filed Critical The University Of Connecticut
Priority to AU15188/95A priority Critical patent/AU682246B2/en
Priority to EP95906714A priority patent/EP0737318A4/en
Priority to CA002180163A priority patent/CA2180163C/en
Publication of WO1995018385A1 publication Critical patent/WO1995018385A1/en

Links

Classifications

    • 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
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/58—Testing of lines, cables or conductors
    • 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
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Relating To Insulation (AREA)

Abstract

Test apparatus for a high voltage cable installation includes a high AC voltage source (10) having the frequency range intended to be carried by the cable installation and a high DC voltage source (16). A switch (18) alternately passes positive and negative polarities of the DC voltage, and the AC voltage source and the alternating polarity DC voltage output from the switch are coupled while isolating the voltage sources from each other. The resulting alternating polarity DC-biased AC voltage (26) is injected into the cable installation to produce indications of incipient faults.
PCT/US1994/014904 1993-12-30 1994-12-23 High voltage dc-biased ac test system WO1995018385A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU15188/95A AU682246B2 (en) 1993-12-30 1994-12-23 High voltage DC-biased AC test system
EP95906714A EP0737318A4 (en) 1993-12-30 1994-12-23 High voltage dc-biased ac test system
CA002180163A CA2180163C (en) 1993-12-30 1994-12-23 High voltage dc-biased ac test system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/175,628 1993-12-30
US08/175,628 US5448176A (en) 1993-12-30 1993-12-30 Cable fault detection using a high voltage alternating polarity DC signal superposed with a system frequency AC signal

Publications (1)

Publication Number Publication Date
WO1995018385A1 true WO1995018385A1 (en) 1995-07-06

Family

ID=22641005

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1994/014904 WO1995018385A1 (en) 1993-12-30 1994-12-23 High voltage dc-biased ac test system

Country Status (5)

Country Link
US (1) US5448176A (en)
EP (1) EP0737318A4 (en)
AU (1) AU682246B2 (en)
CA (1) CA2180163C (en)
WO (1) WO1995018385A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0990916A1 (en) * 1998-04-14 2000-04-05 The Furukawa Electric Co., Ltd. Method of diagnosing deterioration of electric power cable
CN105190333A (en) * 2013-03-15 2015-12-23 豪倍公司 DC high potential insulation breakdown test system and method

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5648725A (en) * 1995-09-12 1997-07-15 Emerson Electric Co. Pulse width modulation simulator for testing insulating materials
US6054865A (en) * 1998-03-03 2000-04-25 Associated Research, Inc. Multiple function electrical safety compliance analyzer
US6225811B1 (en) * 1998-03-30 2001-05-01 Lectromechanical Design Co. Wire degradation testing system
DE10047548A1 (en) * 2000-09-22 2002-04-11 Hagenuk Kmt Kabelmestechnik Gm Method and device for determining the quality of a cable
US6907363B1 (en) 2001-10-15 2005-06-14 Sandia Corporation Automatic insulation resistance testing apparatus
US7595644B2 (en) * 2007-08-14 2009-09-29 Texas Instruments Incorporated Power-over-ethernet isolation loss detector
US8711711B2 (en) 2008-10-31 2014-04-29 Howard University System and method of detecting and locating intermittent and other faults
US8050002B2 (en) * 2008-10-31 2011-11-01 Howard University Housing arrangement for fault determination apparatus and method for installing the same
US8102779B2 (en) * 2008-10-31 2012-01-24 Howard University System and method of detecting and locating intermittent electrical faults in electrical systems
US8897635B2 (en) * 2008-10-31 2014-11-25 Howard University System and method of detecting and locating intermittent and other faults
JP2016217948A (en) * 2015-05-22 2016-12-22 三菱電線工業株式会社 Insulation deterioration diagnosis method for power cable, insulation deterioration diagnosis device, insulation deterioration diagnosis vehicle, and ac voltage superposition device
CN106019042B (en) * 2016-04-29 2019-01-08 国网辽宁省电力有限公司电力科学研究院 A method of high-tension cable built-in electrical insulation defect type is identified based on characteristic spectrum
US11874318B2 (en) 2021-08-27 2024-01-16 Hamilton Sundstrand Corporation Online health monitoring and fault detection for high voltage DC distribution networks

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4825171A (en) * 1986-01-09 1989-04-25 Hdw-Elektronik Gmbh Testing device for voltage testing of cables and cable sets
US4887041A (en) * 1988-02-17 1989-12-12 University Of Connecticut Method and instrumentation for the detection, location and characterization of partial discharges and faults in electric power cables
US5266902A (en) * 1991-09-16 1993-11-30 George Kovacich High or low voltage electrical resistance tester
US5276401A (en) * 1990-01-09 1994-01-04 Hitachi Cable, Ltd. Method for diagnosing an insulation deterioration of an electric apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1153064B (en) * 1982-11-18 1987-01-14 Pirelli Cavi Spa METHOD AND RELATED SYSTEM TO PROMOTE THE DIELECTRIC RIGIDITY OF A DIRECT CURRENT CABLE INSULATION
JPS61243375A (en) * 1985-04-19 1986-10-29 Tokyo Electric Power Co Inc:The Deterioration diagnosis for insulator of power cable
US4766386A (en) * 1986-05-23 1988-08-23 Cabletron Time domain reflectometer for measuring impedance discontinuities on a powered transmission line
GB8724960D0 (en) * 1987-10-24 1987-11-25 Radiodetection Ltd Cable fault tracing systems
JPH0726985B2 (en) * 1988-02-22 1995-03-29 日立電線株式会社 Insulation deterioration diagnosis method for power cables
JPH0619416B2 (en) * 1990-01-09 1994-03-16 日立電線株式会社 Insulation diagnosis method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4825171A (en) * 1986-01-09 1989-04-25 Hdw-Elektronik Gmbh Testing device for voltage testing of cables and cable sets
US4887041A (en) * 1988-02-17 1989-12-12 University Of Connecticut Method and instrumentation for the detection, location and characterization of partial discharges and faults in electric power cables
US5276401A (en) * 1990-01-09 1994-01-04 Hitachi Cable, Ltd. Method for diagnosing an insulation deterioration of an electric apparatus
US5266902A (en) * 1991-09-16 1993-11-30 George Kovacich High or low voltage electrical resistance tester

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
BIDDLE COMPANY, Presentation at EIRC (University of Connecticut), Fall Workshop, Windsor, CT, Oktober 1992, J.P. STEINER, "Novel Insulation Testing Methods". *
E & O, Presentation at APPA Annual Meeting, Phoenix, Arizona, 09 March 1993, M.S. MASHIKIAN, "To Test or not to Test Field Aged Medium Voltage Cables", pages 1-14. *
HDW ELECTRONICS, INC., Presentation at EIRC (University of Connecticut), Windsor, CT, Oktober 1992, H.R. GNERLICH, "Effects of HV Testing and Fault Locating on Power Cables with Solid Dielectric Insulation", pages 1-11. *
See also references of EP0737318A4 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0990916A1 (en) * 1998-04-14 2000-04-05 The Furukawa Electric Co., Ltd. Method of diagnosing deterioration of electric power cable
EP0990916A4 (en) * 1998-04-14 2002-01-30 Furukawa Electric Co Ltd Method of diagnosing deterioration of electric power cable
CN105190333A (en) * 2013-03-15 2015-12-23 豪倍公司 DC high potential insulation breakdown test system and method
EP2972428A4 (en) * 2013-03-15 2016-12-21 Hubbell Inc Dc high potential insulation breakdown test system and method
US10310006B2 (en) 2013-03-15 2019-06-04 Hubbell Incorporated DC high potential insulation breakdown test system and method
US10634711B2 (en) 2013-03-15 2020-04-28 Hubbell Incorporated DC high potential insulation breakdown test system and method

Also Published As

Publication number Publication date
EP0737318A1 (en) 1996-10-16
AU1518895A (en) 1995-07-17
CA2180163C (en) 1999-05-25
EP0737318A4 (en) 1997-04-23
AU682246B2 (en) 1997-09-25
US5448176A (en) 1995-09-05
CA2180163A1 (en) 1995-07-06

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