JPS6449984A - Partial discharge diagnosing device for transformer - Google Patents

Partial discharge diagnosing device for transformer

Info

Publication number
JPS6449984A
JPS6449984A JP62206008A JP20600887A JPS6449984A JP S6449984 A JPS6449984 A JP S6449984A JP 62206008 A JP62206008 A JP 62206008A JP 20600887 A JP20600887 A JP 20600887A JP S6449984 A JPS6449984 A JP S6449984A
Authority
JP
Japan
Prior art keywords
transformer
partial discharge
ultrasonic vibration
time delay
detected
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
JP62206008A
Other languages
Japanese (ja)
Inventor
Hiroshi Yamada
Yasuo Aoki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP62206008A priority Critical patent/JPS6449984A/en
Publication of JPS6449984A publication Critical patent/JPS6449984A/en
Pending legal-status Critical Current

Links

Landscapes

  • Testing Relating To Insulation (AREA)
  • Housings And Mounting Of Transformers (AREA)

Abstract

PURPOSE:To check the operation state of the partial discharge diagnosing device of the transformer at all times by deciding automatically the soundness of an ultrasonic vibration detector according to the time delay of the output signal of the ultrasonic vibration detector behind a current flowing to a neutral point ground line. CONSTITUTION:A sound signal 22 due to partial discharge detected by the ultrasonic vibration detector 6 is detected time delay DELTAt required for the propagation from a generation point to the detector 6 behind a current signal 21 due to partial discharge detected by a current transformer 5. Therefore, when the time delay DELTAt is smaller than a specific time T0, it is judged that detection signals 21 and 22 are caused by the discharge in the transformer 1. Further, the time T0 is determined by the sound speed in insulation and the maximum size of the transformer 1. Consequently, the operation state of the partial discharge diagnostic device 10 of the transformer 1 is checked at all times.
JP62206008A 1987-08-19 1987-08-19 Partial discharge diagnosing device for transformer Pending JPS6449984A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62206008A JPS6449984A (en) 1987-08-19 1987-08-19 Partial discharge diagnosing device for transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62206008A JPS6449984A (en) 1987-08-19 1987-08-19 Partial discharge diagnosing device for transformer

Publications (1)

Publication Number Publication Date
JPS6449984A true JPS6449984A (en) 1989-02-27

Family

ID=16516380

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62206008A Pending JPS6449984A (en) 1987-08-19 1987-08-19 Partial discharge diagnosing device for transformer

Country Status (1)

Country Link
JP (1) JPS6449984A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5530366A (en) * 1994-11-01 1996-06-25 Abb Power T&D Company Inc. Acoustic optical system for partial discharge detection and location
EP1645887A2 (en) * 2004-10-08 2006-04-12 Ansaldo Energia S.P.A. Instrument for detecting and analysing partial discharges in electrical machines
JP2010197258A (en) * 2009-02-26 2010-09-09 Toyota Motor Corp Device and method for verifying partial discharge test apparatus
JP2013044616A (en) * 2011-08-23 2013-03-04 Kyushu Institute Of Technology Partial discharge position locating method and partial discharge position locating device
CN103675630A (en) * 2013-12-19 2014-03-26 国家电网公司 Capacitor partial discharge ultrasound gating circuit
CN103713244A (en) * 2013-12-30 2014-04-09 国家电网公司 Electrified detection device and method used for local discharging of distributing cables
CN103744004A (en) * 2013-12-31 2014-04-23 内蒙古大唐国际托克托发电有限责任公司 Transformer/reactor partial discharge online monitoring method and monitoring system
CN103839657A (en) * 2014-03-13 2014-06-04 国家电网公司 Neutral point and shell dual ground system for transformers

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60211812A (en) * 1984-04-05 1985-10-24 Toshiba Corp Monitoring device for partial discharge of transformer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60211812A (en) * 1984-04-05 1985-10-24 Toshiba Corp Monitoring device for partial discharge of transformer

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5530366A (en) * 1994-11-01 1996-06-25 Abb Power T&D Company Inc. Acoustic optical system for partial discharge detection and location
EP1645887A2 (en) * 2004-10-08 2006-04-12 Ansaldo Energia S.P.A. Instrument for detecting and analysing partial discharges in electrical machines
JP2010197258A (en) * 2009-02-26 2010-09-09 Toyota Motor Corp Device and method for verifying partial discharge test apparatus
JP2013044616A (en) * 2011-08-23 2013-03-04 Kyushu Institute Of Technology Partial discharge position locating method and partial discharge position locating device
CN103675630A (en) * 2013-12-19 2014-03-26 国家电网公司 Capacitor partial discharge ultrasound gating circuit
CN103713244A (en) * 2013-12-30 2014-04-09 国家电网公司 Electrified detection device and method used for local discharging of distributing cables
CN103744004A (en) * 2013-12-31 2014-04-23 内蒙古大唐国际托克托发电有限责任公司 Transformer/reactor partial discharge online monitoring method and monitoring system
CN103839657A (en) * 2014-03-13 2014-06-04 国家电网公司 Neutral point and shell dual ground system for transformers

Similar Documents

Publication Publication Date Title
JPS5523476A (en) Detection circuit device for ultrasonic propagation time
TW344895B (en) Delay element tester and integrated circuit with test function
JPS6449984A (en) Partial discharge diagnosing device for transformer
JPS5750653A (en) Test piece for ultrasonic flaw detection
JPS5793271A (en) Trouble detector in ultrasonic device
JPS5546182A (en) Flaw signal generation unit for adjustment for eddy current flaw detector
JPS5527903A (en) Method and unit for indicating partialy discharging position of electric apparatus
JPS5310486A (en) Location of ultrasonic probe and device therefor
JPS5733368A (en) Fault detector
SU1223136A1 (en) Apparatus for determining instant of acoustic emission signal maximum
EP0091276A3 (en) Sound pattern discrimination system
JPS54104883A (en) Bearing abnormality detecting device
JPS6442756A (en) Interface cable extending device
JPS5788362A (en) Device and method for detection of stress relief cracking
JPS6474471A (en) Diagnostic system
SU1052991A1 (en) Method of ultrasonic inspection
SU792577A1 (en) Pulse selector for apparatus for acoustic investigations
JPS576335A (en) Inspecting and diagnosing device for automobile or the like
JPS5424684A (en) Acoustic detector
JPS5741749A (en) Diagnosing system of fault detecting circuit
JPS59102173A (en) Distance measuring apparatus
JPH0383898U (en)
JPS55135759A (en) Diagnostic unit
JPS57106923A (en) Automatic detecting method for earth line noise
JPS57178115A (en) Knocking detector