JPS6449984A - Partial discharge diagnosing device for transformer - Google Patents
Partial discharge diagnosing device for transformerInfo
- 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
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.
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)
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)
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 |
-
1987
- 1987-08-19 JP JP62206008A patent/JPS6449984A/en active Pending
Patent Citations (1)
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)
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 |
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