JPS61288175A - Measuring instrument for insulation deterioration of electric power cable - Google Patents

Measuring instrument for insulation deterioration of electric power cable

Info

Publication number
JPS61288175A
JPS61288175A JP13037785A JP13037785A JPS61288175A JP S61288175 A JPS61288175 A JP S61288175A JP 13037785 A JP13037785 A JP 13037785A JP 13037785 A JP13037785 A JP 13037785A JP S61288175 A JPS61288175 A JP S61288175A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
cable
measuring
partial discharge
pulse wave
discharge
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
JP13037785A
Inventor
Mitsugi Aihara
Yasumitsu Ebinuma
Yasutaka Fujiwara
Toshio Kasahara
Akira Nagaoka
Nobuhiro Sasaki
Original Assignee
Showa Electric Wire & Cable Co 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

Links

Abstract

PURPOSE: To measure insulation deterioration with high accuracy by simultaneously measuring DC leak current, position where partial discharge is generated and the change quantity of partial discharge and removing the influence of the discharge and external noise on the result of measurement.
CONSTITUTION: Sensors 30 and 40 are provided to the measuring end and remote end of a cable 20 to be measured. The sensor 40 is connected via a guard return cable 60 to an electric power source 50. The output of a monitor 81 is recorded via filter 91 in a measuring unit 90. the pulse wave induced by partial discharge is propagated toward both of the measuring end and remote end of the cable 20 if the partial discharge is generated at the deteriorated insulation part P of the cable 20 by the impression of a high voltage thereto. The pulse wave arriving at the measuring end of the cable 20 passes the impedance of the sensor 30. The light signal indicating the pulse wave is inputted via an optical fiber 72 to a monitor 82. The power source 50 and units 90, 100 and 110 are integrally controlled by a microcomputer 140 for system control. The influence of corona discharge is therefore not received.
COPYRIGHT: (C)1986,JPO&Japio
JP13037785A 1985-06-14 1985-06-14 Measuring instrument for insulation deterioration of electric power cable Pending JPS61288175A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13037785A JPS61288175A (en) 1985-06-14 1985-06-14 Measuring instrument for insulation deterioration of electric power cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13037785A JPS61288175A (en) 1985-06-14 1985-06-14 Measuring instrument for insulation deterioration of electric power cable

Publications (1)

Publication Number Publication Date
JPS61288175A true true JPS61288175A (en) 1986-12-18

Family

ID=15032888

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13037785A Pending JPS61288175A (en) 1985-06-14 1985-06-14 Measuring instrument for insulation deterioration of electric power cable

Country Status (1)

Country Link
JP (1) JPS61288175A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63154974A (en) * 1986-12-19 1988-06-28 Showa Electric Wire & Cable Co Ltd Automatically measuring system for deterioration in insulation of cable
JPS6491070A (en) * 1987-09-30 1989-04-10 Tokyo Electric Power Co Insulation tester
JPS6491072A (en) * 1987-09-30 1989-04-10 Tokyo Electric Power Co Insulation tester by ac method
JP2008003087A (en) * 2006-06-22 2008-01-10 General Electric Co <Ge> Multifunction sensor system for electrical machines
CN104749503A (en) * 2015-03-30 2015-07-01 华南理工大学 XLPE cable insulation aging state determining method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS576367A (en) * 1980-06-12 1982-01-13 Chubu Electric Power Co Inc Method for detecting partial discharge of power cable
JPS5746169A (en) * 1980-09-05 1982-03-16 Showa Electric Wire & Cable Co Ltd Method for measuring leaking dc current from cable
JPS60100061A (en) * 1983-11-04 1985-06-03 Showa Electric Wire & Cable Co Ltd Apparatus for measuring partial discharge generating position of cable

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS576367A (en) * 1980-06-12 1982-01-13 Chubu Electric Power Co Inc Method for detecting partial discharge of power cable
JPS5746169A (en) * 1980-09-05 1982-03-16 Showa Electric Wire & Cable Co Ltd Method for measuring leaking dc current from cable
JPS60100061A (en) * 1983-11-04 1985-06-03 Showa Electric Wire & Cable Co Ltd Apparatus for measuring partial discharge generating position of cable

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63154974A (en) * 1986-12-19 1988-06-28 Showa Electric Wire & Cable Co Ltd Automatically measuring system for deterioration in insulation of cable
JPS6491070A (en) * 1987-09-30 1989-04-10 Tokyo Electric Power Co Insulation tester
JPS6491072A (en) * 1987-09-30 1989-04-10 Tokyo Electric Power Co Insulation tester by ac method
JP2008003087A (en) * 2006-06-22 2008-01-10 General Electric Co <Ge> Multifunction sensor system for electrical machines
CN104749503A (en) * 2015-03-30 2015-07-01 华南理工大学 XLPE cable insulation aging state determining method
CN104749503B (en) * 2015-03-30 2017-08-25 华南理工大学 One kind of cable insulation xlpe method of determining the aging condition

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