WO2008069988A3 - Method and apparatus for detecting high impedance fault - Google Patents

Method and apparatus for detecting high impedance fault Download PDF

Info

Publication number
WO2008069988A3
WO2008069988A3 PCT/US2007/024672 US2007024672W WO2008069988A3 WO 2008069988 A3 WO2008069988 A3 WO 2008069988A3 US 2007024672 W US2007024672 W US 2007024672W WO 2008069988 A3 WO2008069988 A3 WO 2008069988A3
Authority
WO
WIPO (PCT)
Prior art keywords
high impedance
impedance fault
detecting high
signal
harmonics
Prior art date
Application number
PCT/US2007/024672
Other languages
French (fr)
Other versions
WO2008069988A2 (en
Inventor
Ratan Das
Mohamed Y Haj-Maharsi
John M Peterson
Original Assignee
Abb Technology Ag
Ratan Das
Mohamed Y Haj-Maharsi
John M Peterson
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 Abb Technology Ag, Ratan Das, Mohamed Y Haj-Maharsi, John M Peterson filed Critical Abb Technology Ag
Publication of WO2008069988A2 publication Critical patent/WO2008069988A2/en
Publication of WO2008069988A3 publication Critical patent/WO2008069988A3/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
    • G01R31/12—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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
    • H02H1/0015—Using arc detectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Locating Faults (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

A method and apparatus to improve the security and dependability of high impedance fault (HIF) detection by removing prior to the detection devices one or more of a predetermined number of harmonics of the power line frequency. In one embodiment the sixth and seventh harmonics are removed to provide a first signal to one or more of the HIF detection device and from that signal the fifth harmonic is removed to provide a second signal to the other of the HIF detection devices. In another embodiment all of the above harmonics are removed from prior to the detection device(s).
PCT/US2007/024672 2006-12-01 2007-11-30 Method and apparatus for detecting high impedance fault WO2008069988A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US87225306P 2006-12-01 2006-12-01
US60/872,253 2006-12-01

Publications (2)

Publication Number Publication Date
WO2008069988A2 WO2008069988A2 (en) 2008-06-12
WO2008069988A3 true WO2008069988A3 (en) 2008-12-18

Family

ID=39314396

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/024672 WO2008069988A2 (en) 2006-12-01 2007-11-30 Method and apparatus for detecting high impedance fault

Country Status (1)

Country Link
WO (1) WO2008069988A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9366713B2 (en) * 2013-05-23 2016-06-14 Pentair Thermal Management Llc Arc fault detection system and method
CN106908663A (en) * 2017-03-07 2017-06-30 国网江苏省电力公司电力科学研究院 A kind of charging electric vehicle harmonic identification method based on wavelet transformation
US11537114B2 (en) * 2021-03-01 2022-12-27 Renesas Electronics America Inc. Device and method for pre-bootup fault control of a driver output

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4297738A (en) * 1979-10-29 1981-10-27 Electric Power Research Institute, Inc. Apparatus for and method of detecting high impedance faults on distribution circuits with delta connected loads
US4466071A (en) * 1981-09-28 1984-08-14 Texas A&M University System High impedance fault detection apparatus and method
EP0639879A2 (en) * 1993-08-20 1995-02-22 Eaton Corporation Arc detection using current variation
US5602709A (en) * 1992-07-10 1997-02-11 Technisearch Limited High impedance fault detector
US7069116B2 (en) * 2004-02-02 2006-06-27 Abb Inc. High impedance fault detection

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4297738A (en) * 1979-10-29 1981-10-27 Electric Power Research Institute, Inc. Apparatus for and method of detecting high impedance faults on distribution circuits with delta connected loads
US4466071A (en) * 1981-09-28 1984-08-14 Texas A&M University System High impedance fault detection apparatus and method
US5602709A (en) * 1992-07-10 1997-02-11 Technisearch Limited High impedance fault detector
EP0639879A2 (en) * 1993-08-20 1995-02-22 Eaton Corporation Arc detection using current variation
US7069116B2 (en) * 2004-02-02 2006-06-27 Abb Inc. High impedance fault detection

Also Published As

Publication number Publication date
WO2008069988A2 (en) 2008-06-12

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