JPS576367A - Method for detecting partial discharge of power cable - Google Patents

Method for detecting partial discharge of power cable

Info

Publication number
JPS576367A
JPS576367A JP7952780A JP7952780A JPS576367A JP S576367 A JPS576367 A JP S576367A JP 7952780 A JP7952780 A JP 7952780A JP 7952780 A JP7952780 A JP 7952780A JP S576367 A JPS576367 A JP S576367A
Authority
JP
Japan
Prior art keywords
cable
signal
power source
partial discharge
high voltage
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
JP7952780A
Other languages
Japanese (ja)
Inventor
Yasuo Suzuki
Haruo Endo
Kiyoshi Sakai
Toshio Kasahara
Kazunobu Takayanagi
Mitsugi Aihara
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.)
Chubu Electric Power Co Inc
SWCC Corp
Original Assignee
Chubu Electric Power Co Inc
Showa Electric Wire and Cable Co
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 Chubu Electric Power Co Inc, Showa Electric Wire and Cable Co filed Critical Chubu Electric Power Co Inc
Priority to JP7952780A priority Critical patent/JPS576367A/en
Publication of JPS576367A publication Critical patent/JPS576367A/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)
  • Testing Relating To Insulation (AREA)

Abstract

PURPOSE:To make it difficult to pick up noises such as broadcasting waves and facilitate the detection of micro electric signals by inserting a partial discharge signal separating circuit in series between a cable to be tested and a high voltage source. CONSTITUTION:High voltage is applied from a power source 2 to the conductors 5 of a power cable 1 through a high voltage power source wire 6, and the earth side 7 of the power source 2 and the shielding layer 8 of the cable 1 are held grounded. A partial discharge signal separating circuit 9 is inserted in series between the conductors 5 and the power source wire 6 near the terminal of the cable 1. An amplifier 17 is connected via a voltage dividing capacitor 16 to the terminals 14, 15, and a converter 1 which converts the output signal thereof to a light signal and transmits the same to an optical fiber 18 and an analyzing device 20 are connected thereto. Thereby, the detection of the signal is carried out on the cable head nearest to the cable to be tested and since the signal is transmitted from here up to the analyzing device by using the optical fiber, the possibility of inclusion of external noises into the detection signal is extremely small and safety is high.
JP7952780A 1980-06-12 1980-06-12 Method for detecting partial discharge of power cable Pending JPS576367A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7952780A JPS576367A (en) 1980-06-12 1980-06-12 Method for detecting partial discharge of power cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7952780A JPS576367A (en) 1980-06-12 1980-06-12 Method for detecting partial discharge of power cable

Publications (1)

Publication Number Publication Date
JPS576367A true JPS576367A (en) 1982-01-13

Family

ID=13692449

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7952780A Pending JPS576367A (en) 1980-06-12 1980-06-12 Method for detecting partial discharge of power cable

Country Status (1)

Country Link
JP (1) JPS576367A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61187670A (en) * 1985-02-15 1986-08-21 Showa Electric Wire & Cable Co Ltd Apparatus for testing insulation of power cable
JPS61218958A (en) * 1985-03-25 1986-09-29 Showa Electric Wire & Cable Co Ltd Method for measuring partial discharge of power cable
JPS61288175A (en) * 1985-06-14 1986-12-18 Showa Electric Wire & Cable Co Ltd Measuring instrument for insulation deterioration of electric power cable
JPS62278465A (en) * 1986-05-27 1987-12-03 Ngk Insulators Ltd Lightening arresting insulator with actuation sensor
CN1052728C (en) * 1997-05-05 2000-05-24 四川师范大学 Method for extracting hologenome of giant panda

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4917272B1 (en) * 1969-05-22 1974-04-27
JPS5328281A (en) * 1976-08-30 1978-03-16 Showa Electric Wire & Cable Co Terminal part of highhvoltage dcccable

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4917272B1 (en) * 1969-05-22 1974-04-27
JPS5328281A (en) * 1976-08-30 1978-03-16 Showa Electric Wire & Cable Co Terminal part of highhvoltage dcccable

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61187670A (en) * 1985-02-15 1986-08-21 Showa Electric Wire & Cable Co Ltd Apparatus for testing insulation of power cable
JPS61218958A (en) * 1985-03-25 1986-09-29 Showa Electric Wire & Cable Co Ltd Method for measuring partial discharge of power cable
JPS61288175A (en) * 1985-06-14 1986-12-18 Showa Electric Wire & Cable Co Ltd Measuring instrument for insulation deterioration of electric power cable
JPS62278465A (en) * 1986-05-27 1987-12-03 Ngk Insulators Ltd Lightening arresting insulator with actuation sensor
JPH0516749B2 (en) * 1986-05-27 1993-03-05 Ngk Insulators Ltd
CN1052728C (en) * 1997-05-05 2000-05-24 四川师范大学 Method for extracting hologenome of giant panda

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