JPS57206877A - Measuring method for position of power cable - Google Patents

Measuring method for position of power cable

Info

Publication number
JPS57206877A
JPS57206877A JP56091923A JP9192381A JPS57206877A JP S57206877 A JPS57206877 A JP S57206877A JP 56091923 A JP56091923 A JP 56091923A JP 9192381 A JP9192381 A JP 9192381A JP S57206877 A JPS57206877 A JP S57206877A
Authority
JP
Japan
Prior art keywords
power
cores
cable
core
current
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.)
Pending
Application number
JP56091923A
Other languages
Japanese (ja)
Inventor
Mitsuru Takada
Kusuo Sanjo
Minoru Kameda
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP56091923A priority Critical patent/JPS57206877A/en
Publication of JPS57206877A publication Critical patent/JPS57206877A/en
Pending legal-status Critical Current

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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

PURPOSE:To enable measurement of the position of a three-core power cable even when no power protection signal line is incorporated therein, by connecting a current-controlling element to each of two cores at one end of the cable and connecting another current-controlling element to the third core at the other end thereof. CONSTITUTION:A three-core power cable has power cores 1A, 1B and 1C and the cable part 2 thereof is buried in the seabed or the like. Capacitors C1 and C2 are connected between the power cores 1A and 1B and the earth on the power supply side, while a capacitor C3 is connected between the power core 1C and the earth on the load side. Currents ia+io, ib+io and ic+io are supplied from a three-phase AC power source to power cores 1A, 1B and 1C respectively and a current io is made to flow to the earth through the intermediary of the capacitors C1,C2 and C3. A current flowing through each of the power cores 1A, 1B and 1C turns to be ia,ib and ic+io respectively in the cable part 2, i.e. to be placed in a state of imbalance. Accordingly, the position of the part can be measured by a search coil or the like.
JP56091923A 1981-06-15 1981-06-15 Measuring method for position of power cable Pending JPS57206877A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56091923A JPS57206877A (en) 1981-06-15 1981-06-15 Measuring method for position of power cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56091923A JPS57206877A (en) 1981-06-15 1981-06-15 Measuring method for position of power cable

Publications (1)

Publication Number Publication Date
JPS57206877A true JPS57206877A (en) 1982-12-18

Family

ID=14040097

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56091923A Pending JPS57206877A (en) 1981-06-15 1981-06-15 Measuring method for position of power cable

Country Status (1)

Country Link
JP (1) JPS57206877A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000041007A1 (en) 1998-12-18 2000-07-13 Abb Ab Location of a cable in a dc connection in a bipolar 12-pulse system for transmission of electrical energy by means of high-voltage direct current

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54147064A (en) * 1978-05-11 1979-11-16 Yasuyuki Nakashima Method of searching for buried electric wire

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54147064A (en) * 1978-05-11 1979-11-16 Yasuyuki Nakashima Method of searching for buried electric wire

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000041007A1 (en) 1998-12-18 2000-07-13 Abb Ab Location of a cable in a dc connection in a bipolar 12-pulse system for transmission of electrical energy by means of high-voltage direct current

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