JPS6474465A - Partial discharge position locating device - Google Patents
Partial discharge position locating deviceInfo
- Publication number
- JPS6474465A JPS6474465A JP23341387A JP23341387A JPS6474465A JP S6474465 A JPS6474465 A JP S6474465A JP 23341387 A JP23341387 A JP 23341387A JP 23341387 A JP23341387 A JP 23341387A JP S6474465 A JPS6474465 A JP S6474465A
- Authority
- JP
- Japan
- Prior art keywords
- ultrasonic wave
- signal waveforms
- calculating
- digital signal
- ultrasonic waves
- 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.)
- Granted
Links
Landscapes
- Locating Faults (AREA)
Abstract
PURPOSE:To preclude a dielectric breakdown accident by calculating a mutual correlation coefficient between every two signal waveforms obtained by converting ultrasonic wave sensor outputs from analog to digital and calculating the position of partial discharging from a difference in arrival time between sensors. CONSTITUTION:The ultrasonic wave sensors 3a-3d are installed at different positions and detect ultrasonic waves generated by the partial discharging to generate electric signals. The output waveforms of the ultrasonic wave sensors 3a-3d are converted by a waveform storage circuit 5 into digital signal waveforms, which are stored. Then an arithmetic unit 6 reads the digital signal waveforms and calculates a mutual correlation coefficient between every two digital signal waveforms; and the arrival time difference of the ultrasonic waves to the ultrasonic wave sensor is calculated from the maximum value and multiplied by the speed of the ultrasonic waves to calculate the distance difference, thereby calculating and deciding the position of the partial discharging.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23341387A JPH0750143B2 (en) | 1987-09-17 | 1987-09-17 | Partial discharge position locator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23341387A JPH0750143B2 (en) | 1987-09-17 | 1987-09-17 | Partial discharge position locator |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6474465A true JPS6474465A (en) | 1989-03-20 |
JPH0750143B2 JPH0750143B2 (en) | 1995-05-31 |
Family
ID=16954671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23341387A Expired - Lifetime JPH0750143B2 (en) | 1987-09-17 | 1987-09-17 | Partial discharge position locator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0750143B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0805355A2 (en) * | 1996-04-30 | 1997-11-05 | Dipl.-Ing. H. Horstmann GmbH | Procedure and apparatus for determining the distance to a cable fault |
JP2014518129A (en) * | 2011-07-05 | 2014-07-28 | コーニンクレッカ フィリップス エヌ ヴェ | Method, apparatus and system for determining the moment when the state of an artery switches from open to closed and vice versa for an artery of interest under pressure fluctuations |
CN110865286A (en) * | 2019-11-25 | 2020-03-06 | 武汉三相电力科技有限公司 | Discharge phase calculation method |
CN112327108A (en) * | 2020-10-09 | 2021-02-05 | 国网冀北电力有限公司检修分公司 | Tank-type circuit breaker partial discharge ultrasonic signal denoising and time difference identification method |
CN116973702A (en) * | 2023-07-31 | 2023-10-31 | 上海莫克电子技术有限公司 | Signal identification method and system applied to GIS partial discharge test |
-
1987
- 1987-09-17 JP JP23341387A patent/JPH0750143B2/en not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0805355A2 (en) * | 1996-04-30 | 1997-11-05 | Dipl.-Ing. H. Horstmann GmbH | Procedure and apparatus for determining the distance to a cable fault |
EP0805355A3 (en) * | 1996-04-30 | 1999-04-07 | Dipl.-Ing. H. Horstmann GmbH | Procedure and apparatus for determining the distance to a cable fault |
JP2014518129A (en) * | 2011-07-05 | 2014-07-28 | コーニンクレッカ フィリップス エヌ ヴェ | Method, apparatus and system for determining the moment when the state of an artery switches from open to closed and vice versa for an artery of interest under pressure fluctuations |
CN110865286A (en) * | 2019-11-25 | 2020-03-06 | 武汉三相电力科技有限公司 | Discharge phase calculation method |
CN112327108A (en) * | 2020-10-09 | 2021-02-05 | 国网冀北电力有限公司检修分公司 | Tank-type circuit breaker partial discharge ultrasonic signal denoising and time difference identification method |
CN116973702A (en) * | 2023-07-31 | 2023-10-31 | 上海莫克电子技术有限公司 | Signal identification method and system applied to GIS partial discharge test |
CN116973702B (en) * | 2023-07-31 | 2024-04-05 | 上海莫克电子技术有限公司 | Signal identification method and system applied to GIS partial discharge test |
Also Published As
Publication number | Publication date |
---|---|
JPH0750143B2 (en) | 1995-05-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU5654501A (en) | Method and apparatus for detection of structural damage | |
CA2347284A1 (en) | Apparatus providing on-line indication of frequency of an ac electric power system | |
JPS6474465A (en) | Partial discharge position locating device | |
JPS6432118A (en) | Encoder device | |
JPS6453186A (en) | Ultrasonic range finder | |
JPH07325151A (en) | Ultrasonic distance measuring equipment | |
JPS561349A (en) | Measuring method of propagation time of sound wave and finding position | |
JPS648429A (en) | Coordinate input device | |
JPS5465568A (en) | Ultrasonic system object detector | |
SU1095039A1 (en) | Device for measuring speed of ultrasound materials | |
JPS57187609A (en) | Measuring device for decrease in wall thickness | |
JPS5724117A (en) | Generating circuit for linear wave | |
JPH01221690A (en) | Ultrasonic distance sensor | |
JPS6473210A (en) | Angle detector | |
SU661381A2 (en) | Frequrncy sensor | |
SU619894A1 (en) | Time interval meter | |
JPS6474456A (en) | Measuring circuit for voltage crest value of acoustic signal | |
JPS6413487A (en) | Ultrasonic detector | |
JPS5560850A (en) | Sound wave monitor | |
JPS5679963A (en) | Waveform measuring method and its device | |
SU1098715A1 (en) | Welding current measuring device | |
JPS5539055A (en) | Wheel diameter compensator for vehicle | |
JPS5560862A (en) | Automatically-balanced measuring instrument | |
SU1566300A1 (en) | Apparatus for measuring impedances | |
JPS5335591A (en) | Sound diagnosing apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 13 Free format text: PAYMENT UNTIL: 20080531 |