GB2571370A8 - Partial discharge location device and method - Google Patents

Partial discharge location device and method Download PDF

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Publication number
GB2571370A8
GB2571370A8 GB1809226.2A GB201809226A GB2571370A8 GB 2571370 A8 GB2571370 A8 GB 2571370A8 GB 201809226 A GB201809226 A GB 201809226A GB 2571370 A8 GB2571370 A8 GB 2571370A8
Authority
GB
United Kingdom
Prior art keywords
partial discharge
probe
time
difference
disposed
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
Application number
GB1809226.2A
Other versions
GB2571370B (en
GB2571370A (en
GB201809226D0 (en
Inventor
Wyn Hughes Sion
Edward Platts William
White Robert
Sandell Codd Peter
Anthony Devine Gareth
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.)
EA Technology Ltd
Original Assignee
EA Technology 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 EA Technology Ltd filed Critical EA Technology Ltd
Priority to GB1809226.2A priority Critical patent/GB2571370B/en
Publication of GB201809226D0 publication Critical patent/GB201809226D0/en
Priority to PCT/GB2019/051545 priority patent/WO2019234412A2/en
Publication of GB2571370A publication Critical patent/GB2571370A/en
Publication of GB2571370A8 publication Critical patent/GB2571370A8/en
Application granted granted Critical
Publication of GB2571370B publication Critical patent/GB2571370B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • G01R31/1227—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 of components, parts or materials
    • G01R31/1263—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 of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
    • G01R31/1272—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 of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • G01R1/06—Measuring leads; Measuring probes
    • G01R1/067—Measuring probes
    • G01R1/06788—Hand-held or hand-manipulated probes, e.g. for oscilloscopes or for portable test instruments
    • 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
    • G01R31/14—Circuits therefor, e.g. for generating test voltages, sensing circuits
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • G01R1/025—General constructional details concerning dedicated user interfaces, e.g. GUI, or dedicated keyboards

Abstract

A handheld device for detecting a partial discharge event 10. The device comprises: a first probe 12 having a first partial discharge sensor 14 disposed within and a second probe 20 having a second partial discharge sensor disposed 26 within. The second probe is electrically connected to the first probe by a connecting cable 24. The first and second probes comprise means for measuring a difference in time of arrival of a detected partial discharge event. Preferably, the difference in time of arrival detected at the first and second probes is graphically represented. Preferably, the location of the partial discharge event of a substation asset is found. The handheld device may further comprise a filter, logarithmic amplifier, comparator, trigger and processing means whereby the comparator, precedence means and processing means are disposed in the first probe. Also a timing circuit for determining the time difference between two pulses is disclosed comprising: a resettable capacitive time circuit electrically connected to a constant current source across a voltage supply, a first switch and second switch, and a first logic input and a second logic input.
GB1809226.2A 2018-06-05 2018-06-05 Partial discharge location device and method Active GB2571370B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1809226.2A GB2571370B (en) 2018-06-05 2018-06-05 Partial discharge location device and method
PCT/GB2019/051545 WO2019234412A2 (en) 2018-06-05 2019-06-04 Partial discharge location device and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1809226.2A GB2571370B (en) 2018-06-05 2018-06-05 Partial discharge location device and method

Publications (4)

Publication Number Publication Date
GB201809226D0 GB201809226D0 (en) 2018-07-25
GB2571370A GB2571370A (en) 2019-08-28
GB2571370A8 true GB2571370A8 (en) 2019-09-11
GB2571370B GB2571370B (en) 2020-04-15

Family

ID=62975491

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1809226.2A Active GB2571370B (en) 2018-06-05 2018-06-05 Partial discharge location device and method

Country Status (2)

Country Link
GB (1) GB2571370B (en)
WO (1) WO2019234412A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112630604A (en) * 2020-11-13 2021-04-09 广东电网有限责任公司广州供电局 Partial discharge detection device based on capacitive sensor
CN113466503B (en) * 2021-09-06 2021-11-09 徐州云兴电子科技有限公司 Detector is put in office of outdoor cable junction

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200278981Y1 (en) * 2002-03-29 2002-06-20 (주) 피에스디테크 Apparatus for detecting a portion of discharge in a power machinery and tools
CA2508428A1 (en) * 2005-05-20 2006-11-20 Hydro-Quebec Detection, locating and interpretation of partial discharge
KR101181713B1 (en) * 2012-05-24 2012-09-10 대영종합산기(주) The apparatus and method of hybrid partial discharge detector
CN203658526U (en) * 2013-12-30 2014-06-18 国家电网公司 Live-line detection device used for partial discharging of distribution cable
WO2016079869A1 (en) * 2014-11-21 2016-05-26 三菱電機株式会社 Partial discharge position location device
GB2527161B (en) * 2014-12-29 2017-03-29 Ipec Ltd Handheld switchgear partial discharge testing device
CN105425129B (en) * 2015-12-25 2018-11-09 国网陕西省电力公司西安供电公司 A kind of portable unit of partial discharge monitoring for high-tension switch cabinet

Also Published As

Publication number Publication date
GB2571370B (en) 2020-04-15
GB2571370A (en) 2019-08-28
WO2019234412A2 (en) 2019-12-12
WO2019234412A3 (en) 2020-01-09
GB201809226D0 (en) 2018-07-25

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