JPS56107171A - Partial discharge detector - Google Patents
Partial discharge detectorInfo
- Publication number
- JPS56107171A JPS56107171A JP882980A JP882980A JPS56107171A JP S56107171 A JPS56107171 A JP S56107171A JP 882980 A JP882980 A JP 882980A JP 882980 A JP882980 A JP 882980A JP S56107171 A JPS56107171 A JP S56107171A
- Authority
- JP
- Japan
- Prior art keywords
- current
- run
- polarity
- partial discharge
- positive
- 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
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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
PURPOSE:To separate a pulse current attributed to a partial discharge from an electric noise and make possible measurement at positive and negative polarities by combining diodes which run positive-polarity current and negative-polarity current. CONSTITUTION:If a partial discharge occurred in the equivalent electrostatic capacity of a test sample, an electric current is, is' runs, causing a negative-polarity current i2 to run through a diode 8 and a positive-polarity current i1 through a diode 9. Then these currents flow into an output impedance Zp. In this case, the positive- and negative-polarity currents i3, i4 due to the current is' run through D15, 12 and 13, 14 respectively. In addition, the currents iN, iN' run according to polarity on account of an electric noise generated by an impedance Zp on the power supply side, but to not run through D8, 9. Consequently, in case a reduced oscillation waveform of the current is runs, the terminal voltage of Zp is equal to the waveform of the current is. The currents is', iN, iN' do not run through Zd, so that a pulse current attributed to a partial discharge is detected at Zd of a detector 16 and a noise voltage generated at Zp is not detected.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP882980A JPS56107171A (en) | 1980-01-30 | 1980-01-30 | Partial discharge detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP882980A JPS56107171A (en) | 1980-01-30 | 1980-01-30 | Partial discharge detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56107171A true JPS56107171A (en) | 1981-08-25 |
Family
ID=11703672
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP882980A Pending JPS56107171A (en) | 1980-01-30 | 1980-01-30 | Partial discharge detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56107171A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102967810A (en) * | 2012-11-22 | 2013-03-13 | 四川电力科学研究院 | Partial discharge detecting device for variable-frequency resonant oscillation wave cable |
CN111999619A (en) * | 2020-09-17 | 2020-11-27 | 武汉朗德电气有限公司 | GIS partial discharge test method and system based on pulse current distribution measurement |
-
1980
- 1980-01-30 JP JP882980A patent/JPS56107171A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102967810A (en) * | 2012-11-22 | 2013-03-13 | 四川电力科学研究院 | Partial discharge detecting device for variable-frequency resonant oscillation wave cable |
CN111999619A (en) * | 2020-09-17 | 2020-11-27 | 武汉朗德电气有限公司 | GIS partial discharge test method and system based on pulse current distribution measurement |
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