JPS5543465A - Detection method of partial discharge pulse - Google Patents

Detection method of partial discharge pulse

Info

Publication number
JPS5543465A
JPS5543465A JP11725478A JP11725478A JPS5543465A JP S5543465 A JPS5543465 A JP S5543465A JP 11725478 A JP11725478 A JP 11725478A JP 11725478 A JP11725478 A JP 11725478A JP S5543465 A JPS5543465 A JP S5543465A
Authority
JP
Japan
Prior art keywords
cable
phase
pulse
differential amplifier
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
JP11725478A
Other languages
Japanese (ja)
Inventor
Yasumitsu Ebinuma
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.)
SWCC Corp
Original Assignee
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 Showa Electric Wire and Cable Co filed Critical Showa Electric Wire and Cable Co
Priority to JP11725478A priority Critical patent/JPS5543465A/en
Publication of JPS5543465A publication Critical patent/JPS5543465A/en
Pending legal-status Critical Current

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  • Testing Relating To Insulation (AREA)

Abstract

PURPOSE: To carry out the detection of only the discharged pulse by impressing high voltage between one phase conductor and earth, detecting the induction voltage and the discharge pulse signal from one cable and the inductive voltage from the other cable and passing these through the differential amplifier.
CONSTITUTION: The respective shield layer of the respective single core cable U,V,W is earthed, and between the conductor of the electric power cable of V phase and the earth, high voltage is impressed. Since the inductive voltage induced in the cable shield layer is the same in the respective phase, the superposed waves of the inductive voltage and the discharge pulse from the U phase cable are respectively detected and they are passed through the differential amplifier 5. From the differential amplifier 5, only the discharged pulse is obtained as output wave form. Thus, even small discharged pulse can be detected and the generating position of a partial discharge generated in the cable insulating member can be easily determined.
COPYRIGHT: (C)1980,JPO&Japio
JP11725478A 1978-09-22 1978-09-22 Detection method of partial discharge pulse Pending JPS5543465A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11725478A JPS5543465A (en) 1978-09-22 1978-09-22 Detection method of partial discharge pulse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11725478A JPS5543465A (en) 1978-09-22 1978-09-22 Detection method of partial discharge pulse

Publications (1)

Publication Number Publication Date
JPS5543465A true JPS5543465A (en) 1980-03-27

Family

ID=14707202

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11725478A Pending JPS5543465A (en) 1978-09-22 1978-09-22 Detection method of partial discharge pulse

Country Status (1)

Country Link
JP (1) JPS5543465A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57189074A (en) * 1981-05-18 1982-11-20 Showa Electric Wire & Cable Co Ltd Corona measuring method for power cable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57189074A (en) * 1981-05-18 1982-11-20 Showa Electric Wire & Cable Co Ltd Corona measuring method for power cable

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