KR910003395A - 부분 방전 검출 장치 및 방법 - Google Patents

부분 방전 검출 장치 및 방법 Download PDF

Info

Publication number
KR910003395A
KR910003395A KR1019890018219A KR890018219A KR910003395A KR 910003395 A KR910003395 A KR 910003395A KR 1019890018219 A KR1019890018219 A KR 1019890018219A KR 890018219 A KR890018219 A KR 890018219A KR 910003395 A KR910003395 A KR 910003395A
Authority
KR
South Korea
Prior art keywords
signal conductor
conductor
detection device
partial discharge
high voltage
Prior art date
Application number
KR1019890018219A
Other languages
English (en)
Other versions
KR930010385B1 (ko
Inventor
알. 캠벨 스티븐
Original Assignee
알. 캠벨 스티븐
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 알. 캠벨 스티븐 filed Critical 알. 캠벨 스티븐
Publication of KR910003395A publication Critical patent/KR910003395A/ko
Application granted granted Critical
Publication of KR930010385B1 publication Critical patent/KR930010385B1/ko

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
    • G01R31/34—Testing dynamo-electric machines
    • 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
    • G01R31/34—Testing dynamo-electric machines
    • G01R31/346—Testing of armature or field windings
    • 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
    • G01R31/34—Testing dynamo-electric machines
    • G01R31/343—Testing dynamo-electric machines in operation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/26—Devices for sensing voltage, or actuated thereby, e.g. overvoltage protection devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S174/00—Electricity: conductors and insulators
    • Y10S174/13—High voltage cable, e.g. above 10kv, corona prevention
    • Y10S174/14—High voltage cable, e.g. above 10kv, corona prevention having a particular cable application, e.g. winding
    • Y10S174/17—High voltage cable, e.g. above 10kv, corona prevention having a particular cable application, e.g. winding in an electric power conversion, regulation, or protection system

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Testing Relating To Insulation (AREA)
  • Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)

Abstract

내용 없음.

Description

부분 방전 검출 장치 및 방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제2도는 이동된 웨지를 가진 제1도의 고정자 코어 부분이 단면된 평면도,
제3도는 본 발명의 부분 방전 검출장치가 양호하게 설치된 제1도의 고정자 코어내의 고정자 슬롯의 단면도,
제5도는 본 발명의 부분 방전 검출 장치가 달리 양호하게 설치된 고정자 슬롯의 단면도.

Claims (10)

  1. 고전압 도전체(10)내의 부분 방전 펄스를 검출하는 검출 장치(30)에 있어서, 절연면(34)이 있는 도전판(32)과, 절연면(34)의 일부에 걸쳐지고 이것으로부터 전기 절연된 신호 도전체(36)와, 전기 펄스를 기록하는 수단과, 신호 도전체로부터 기록 수단으로 전기적인 펄스를 전달하는 수단(30)을 포함하며, 고전압 도전체(10)를 따라서 부분 방전 활성도가 기록 수단으로 전달되는 신호 도전체(36)내의 펄스를 전자기적으로 유도하는 것을 특징으로 하는 검출 장치(30).
  2. 제1항에 있어서, 신호 도전체(36)로부터 기록 수단으로 전기 펄스를 전달하는 수단(38)이 신호 도전체(36)의 양쪽 단부(40,42)에 연결되는 것을 특징으로 하는 검출 장치(30).
  3. 제1항에 있어서, 기록 수단이 오실로스코프를 구비하는것을 특징으로 하는 검출장치(30).
  4. 제1항, 제2항 또는 제3항에 있어서, 제1도전판(32)에 겹치고 이들로부터 절연된 절연면(34)을 갖는 제2도전판(32)과, 제1신호 도전체(36)에 인접하고 이들로부터 전기 절연된 제2절연 신호 도전체(36)도 포함하며, 전달수단(38)은 한쪽 단부에서 제1판(32)과 제1신호 도전체(36)로 전기 연결되고, 분리 전달수단(38)은 대향 단부에서 제2판(32)과 제2신호 도전체(36)로 전기 연결되는 것을 특징으로 하는 검출장치(30).
  5. 제1항으로 한정된 검출 장치를 사용하는 고전압 도전체내의 부분 방전 활성도를 검출하는 방법에 있어서, 고전압 도전체(10)에 인접하여 도전판(32)를 위치하는 단계와 신호 도전체(36)에 생성된 펄스의 전압 및 주파수를 측정하는 단계와, 부분 방전 활성 구역, 등급 또는 성질을 정하기 위하여 기설정된 값과 측정된 주파수 및 전압을 비교하는 단계를 포함하는 것을 특징으로 하는 방법.
  6. 제5항에 있어서, 고전압 도전체(10)가 고정자 바아인 것을 특징으로 하는 방법.
  7. 제5항 또는 제6항에 있어서, 전달수단(38)이 신호 도전체(36)의 양쪽 단부(40,42)에 연결되고, 신호 도전체(36)의 양쪽 단부에서 생성되는 펄스의 측정이 수행되는 것을 특징으로 하는 방법.
  8. 제1항의 검출 장치(30)를 사용하는 모터, 터어빈발전기 등의 고정자 바아(10)내의 부분 방전 활성도를 검출하는 방법에 있어서, 고정자 코어와 고정자 슬롯(12)에 평행인 신호 도전체(36)에 맞닿는 절연면(34)에 상기 고정자 슬롯(12)에 인접한 도전판(32)을 고정하는 단계와, 신호 도전체(36)내에 생성된 펄스의 전압 및 주파수를 측정하는 단계와, 부분 방전 활성 구역, 등급 또는 성질이 정해지도록 기설정된 값과 측정치를 비교하는 단계를 포함하는 것을 특징으로 하는 방법.
  9. 제8항에 있어서, 고전압 도전체(10)가 고정자 바아인 것을 특징으로 하는 방법.
  10. 제8항 또는 제9항에 있어서, 전달 수단(38)이 신호 도전체(36)의 양쪽 단부(40,42)에 연결되고, 신호 도전체(36)의 양쪽 단부에서 생성되는 펄스의 측정이 수행되는 것을 특징으로 하는 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019890018219A 1989-07-21 1989-12-09 부분방전 검출장치 및 방법 KR930010385B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/383,026 US4949001A (en) 1989-07-21 1989-07-21 Partial discharge detection method and apparatus
US383026 1989-07-21

Publications (2)

Publication Number Publication Date
KR910003395A true KR910003395A (ko) 1991-02-27
KR930010385B1 KR930010385B1 (ko) 1993-10-23

Family

ID=23511393

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890018219A KR930010385B1 (ko) 1989-07-21 1989-12-09 부분방전 검출장치 및 방법

Country Status (12)

Country Link
US (1) US4949001A (ko)
EP (1) EP0408813B1 (ko)
JP (1) JPH0812219B2 (ko)
KR (1) KR930010385B1 (ko)
AR (1) AR247298A1 (ko)
AT (1) ATE122794T1 (ko)
AU (1) AU609019B1 (ko)
BR (1) BR8906170A (ko)
CA (1) CA1287372C (ko)
DE (2) DE68922727D1 (ko)
ES (1) ES2071661T3 (ko)
MX (1) MX174353B (ko)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010108623A (ko) * 2000-05-30 2001-12-08 강성화 절연체손상, 열화 및 오염으로 인한 전기화재예방을위하여 부분방전을 활용하는 방법 및 이를 수행하기 위한시스템
KR100445239B1 (ko) * 2001-12-20 2004-08-21 주식회사 선진전자기술 고압 회전기 고정자 권선에서의 운전중 부분 방전 측정 방법

Families Citing this family (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2060890T3 (es) * 1990-10-22 1994-12-01 Asea Brown Boveri Dispositivo para detectar descargas parciales en elementos de arrollamiento de una maquina electrica.
JPH05338917A (ja) * 1992-06-08 1993-12-21 Hitachi Cable Ltd ボビン自動切り分け処理システム
DE4231713C2 (de) * 1992-09-22 1996-03-21 Siemens Ag Auskopplung hochfrequenter Fehlersignale aus einer flüssigkeitsgekühlten elektrischen Großmaschine
ES2095664T3 (es) * 1992-09-22 1997-02-16 Siemens Ag Desacoplamiento de una señal de error de alta frecuencia de un campo electromagnetico de alta frecuencia en una maquina electrica de grandes dimensiones.
JP3187642B2 (ja) * 1994-02-25 2001-07-11 関西電力株式会社 電気機器の異常検出方法及び回転電機の異常検出装置
US5475312A (en) * 1994-06-07 1995-12-12 Iris Power Engineering Inc. Method and device for distinguishing between partial discharge and electrical noise
DE19515068A1 (de) * 1995-04-27 1996-10-31 Lemke Eberhard Prof Dr Ing Hab Anordnung zur TE-Detektion in Hochspannungskabeln und in deren Verbindungselementen
US5661353A (en) * 1995-05-25 1997-08-26 Allen-Bradley Company, Inc. Electrostatic shield for AC motor
US5821649A (en) * 1995-08-18 1998-10-13 Magnetek, Inc. Electrostatic shielding system for reduction of bearing currents in electric motors
SE510192C2 (sv) 1996-05-29 1999-04-26 Asea Brown Boveri Förfarande och kopplingsarrangemang för att minska problem med tredjetonsströmmar som kan uppstå vid generator - och motordrift av växelströmsmaskiner kopplade till trefas distributions- eller transmissionsnät
SE9602079D0 (sv) 1996-05-29 1996-05-29 Asea Brown Boveri Roterande elektriska maskiner med magnetkrets för hög spänning och ett förfarande för tillverkning av densamma
CN1101988C (zh) * 1996-05-29 2003-02-19 Abb股份公司 一种高压ac电机
KR20000016040A (ko) 1996-05-29 2000-03-25 에이비비 에이비 고전압 권선용 절연 전도체 및 상기 전도체의 제조 방법
AP1083A (en) * 1996-05-29 2002-07-23 Asea Brown Boveri Electromagnetic device.
JP2000511338A (ja) 1996-05-29 2000-08-29 アセア ブラウン ボヴェリ エービー 高圧巻線用導体および前記導体を含む巻線を備える回転電気機械
US5821652A (en) * 1996-08-28 1998-10-13 Marathon Electric Manufacturing Corporation Dynamoelectric machines with shaft voltage prevention method and structure
SE510422C2 (sv) 1996-11-04 1999-05-25 Asea Brown Boveri Magnetplåtkärna för elektriska maskiner
SE515843C2 (sv) 1996-11-04 2001-10-15 Abb Ab Axiell kylning av rotor
SE512917C2 (sv) 1996-11-04 2000-06-05 Abb Ab Förfarande, anordning och kabelförare för lindning av en elektrisk maskin
SE509072C2 (sv) 1996-11-04 1998-11-30 Asea Brown Boveri Anod, anodiseringsprocess, anodiserad tråd och användning av sådan tråd i en elektrisk anordning
SE9704427D0 (sv) 1997-02-03 1997-11-28 Asea Brown Boveri Infästningsanordning för elektriska roterande maskiner
SE508544C2 (sv) 1997-02-03 1998-10-12 Asea Brown Boveri Förfarande och anordning för montering av en stator -lindning bestående av en kabel.
SE9704423D0 (sv) 1997-02-03 1997-11-28 Asea Brown Boveri Roterande elektrisk maskin med spolstöd
SE508543C2 (sv) 1997-02-03 1998-10-12 Asea Brown Boveri Hasplingsanordning
SE9704431D0 (sv) 1997-02-03 1997-11-28 Asea Brown Boveri Effektreglering av synkronmaskin
SE9704422D0 (sv) 1997-02-03 1997-11-28 Asea Brown Boveri Ändplatta
SE9704421D0 (sv) 1997-02-03 1997-11-28 Asea Brown Boveri Seriekompensering av elektrisk växelströmsmaskin
GB2331867A (en) 1997-11-28 1999-06-02 Asea Brown Boveri Power cable termination
WO1999029015A2 (en) 1997-11-28 1999-06-10 Asea Brown Boveri Ab Method and device for controlling the magnetic flux with an auxiliary winding in a hv ac machine
US5979087A (en) * 1998-01-16 1999-11-09 Reliance Electric Industrial Company Electric motor having electrostatic shield arrangement
US6202285B1 (en) 1998-01-16 2001-03-20 Reliance Electric Technologies, Llc Electric motor having electrostatic shield arrangement
US6011338A (en) * 1998-07-10 2000-01-04 Reliance Electric Industrial Company Electric motor having auxiliary winding arrangement for electrostatic shielding
US6801421B1 (en) 1998-09-29 2004-10-05 Abb Ab Switchable flux control for high power static electromagnetic devices
US6809523B1 (en) * 1998-10-16 2004-10-26 The Detroit Edison Company On-line detection of partial discharge in electrical power systems
US6161077A (en) * 1999-01-05 2000-12-12 Hubbell Incorporated Partial discharge site location system for determining the position of faults in a high voltage cable
KR100442124B1 (ko) * 2001-10-18 2004-07-30 한국전기연구원 세라믹 커플러를 이용한 고압 회전기의 부분 방전 측정 장치
US20050035768A1 (en) * 2002-10-02 2005-02-17 Germano Rabach Method and electromagnetic sensor for measuring partial discharges in windings of electrical devices
KR100473623B1 (ko) * 2002-11-12 2005-03-11 한국전기연구원 부분 방전 측정 센서 및 이를 사용한 회전기
WO2004099800A2 (de) * 2003-05-09 2004-11-18 Siemens Aktiengesellschaft Messeinrichtung und verfahren zur ortung einer teilentladung
JP4418320B2 (ja) * 2004-07-28 2010-02-17 株式会社日立産機システム モータ巻線ターン間部分放電計測方法
US7229671B2 (en) * 2004-07-28 2007-06-12 Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. Method for coating package with a filter profile
FI117918B (fi) * 2004-08-19 2007-04-13 Abb Oy Järjestely sähkökoneessa
US7508119B2 (en) * 2006-06-22 2009-03-24 General Electric Company Multifunction sensor system for electrical machines
US7683798B2 (en) * 2006-07-07 2010-03-23 Ssi Power, Llc Current monitoring device for high voltage electric power lines
CN101646950A (zh) * 2006-07-10 2010-02-10 Ssi动力有限公司 用于高压电力线路的电流监视装置
KR100897974B1 (ko) * 2007-07-09 2009-05-18 한국전력공사 고압전동기 부분방전 측정 장치를 이용한 고압전동기 열화상태 측정 방법
US8008925B2 (en) * 2008-07-16 2011-08-30 Siemens Energy, Inc. Electrical partial discharge pulse marker discrimination
US7852105B2 (en) * 2008-12-05 2010-12-14 General Electric Company Winding diagnostic system and method
EP2287625A1 (en) 2009-08-13 2011-02-23 Alstom Technology Ltd Device and method for detecting defects within the insulation of an insulated conductor
JP5433392B2 (ja) * 2009-12-16 2014-03-05 日立オートモティブシステムズ株式会社 電動車両用回転電機、駆動制御装置および絶縁診断方法
US8471589B2 (en) 2011-06-16 2013-06-25 GM Global Technology Operations LLC Method and apparatus for alternator stator turn-to-turn short detection
DE102011082866A1 (de) * 2011-09-16 2013-03-21 Olaf Rudolph Verfahren zum Erkennen einer oder meherer gleichzeitig auftretender Teilenladungs-Quellen
JP5882019B2 (ja) * 2011-10-17 2016-03-09 株式会社日立製作所 インバータ駆動回転電機の試験方法、及び回転電機の試験方法
US9482710B2 (en) 2013-09-11 2016-11-01 GM Global Technology Operations LLC Inspection system for evaluating electrical parts for unwanted partial discharge
RU2671333C2 (ru) 2014-03-11 2018-10-30 Тетра Лаваль Холдингз Энд Файнэнс С.А. Способ управления для инжекционного формования
CN109001602B (zh) * 2018-08-20 2020-07-28 广东工业大学 基于极限学习机算法的局部放电严重程度评估方法
US11300602B1 (en) 2019-12-26 2022-04-12 Dynamic Ratings Pty. Ltd. Method for determining the condition of one or more rotating machine assets and profiling their maintenance needs using partial discharge measurements
CZ309279B6 (cs) 2021-01-18 2022-07-13 Modemtec S.R.O. Způsob extrakce signálu a zařízení k jeho provádění
WO2023006150A1 (de) * 2021-07-26 2023-02-02 Gdg Gerätebau Gesellschaft Mit Beschränkter Haftung Prüfverfahren und -vorrichtung für isolationsschichten in wicklungsnuten
FR3128333A1 (fr) * 2021-10-18 2023-04-21 Safran Procede et systeme de detection de decharges partielles dans un stator de machine electrique

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR930592A (fr) * 1946-07-12 1948-01-29 Forges Ateliers Const Electr Système de protection pour machines et appareils électriques
US3707673A (en) * 1971-03-29 1972-12-26 Westinghouse Electric Corp Corona discharge detecting apparatus including gatable amplifiers controlled by flip-flop means
US3775676A (en) * 1972-07-21 1973-11-27 Westinghouse Electric Corp Methods for locating partial discharges in electrical apparatus
US3887866A (en) * 1973-06-08 1975-06-03 Avtron Manufacturing Inc Surge tester for testing an electrical winding and including voltage comparison means
GB1600239A (en) * 1977-11-28 1981-10-14 Northern Eng Ind Winding carrying laminated cores in electromagnetic machines
JPS5826387Y2 (ja) * 1978-10-02 1983-06-07 株式会社明電舎 電気機器のコロナ検出装置
FR2456398A1 (fr) * 1979-05-11 1980-12-05 Thomson Csf Joint tournant multivoies pour equipement de detection electromagnetique
US4238733A (en) * 1979-05-15 1980-12-09 Canadian General Electric Company Limited Corona discharge monitor system
US4385271A (en) * 1981-03-20 1983-05-24 Moshe Kurtz Fault monitoring by detecting a polarity difference
DE3206388C2 (de) * 1982-02-22 1988-12-22 Kraftwerk Union AG, 4330 Mülheim Anordnung für eine rotierende Thyristorerregung
DD214461B1 (de) * 1983-04-14 1989-09-27 Meissen Kabelwerk Messsonde zur elektrischen detektion von impulsfoermigen teilentladungen
US4539499A (en) * 1984-01-03 1985-09-03 Punch William E Device for detection of contact between rotor and stator
DE3526149A1 (de) * 1985-06-15 1986-12-18 Kraftwerk Union AG, 4330 Mülheim Ankopplungseinheit zur betriebsmaessigen ueberwachung der hochspannungswicklungen und der angeschlossenen ableitungen bei elektrischen hochspannungs-maschinen und -apparaten, mittels teilentladungserfassung und abreissfunkenmessung
US4853818A (en) * 1986-12-29 1989-08-01 Electric Power Research Institute, Inc. System and method for detecting arcing in dynamoelectric machines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010108623A (ko) * 2000-05-30 2001-12-08 강성화 절연체손상, 열화 및 오염으로 인한 전기화재예방을위하여 부분방전을 활용하는 방법 및 이를 수행하기 위한시스템
KR100445239B1 (ko) * 2001-12-20 2004-08-21 주식회사 선진전자기술 고압 회전기 고정자 권선에서의 운전중 부분 방전 측정 방법

Also Published As

Publication number Publication date
JPH0812219B2 (ja) 1996-02-07
BR8906170A (pt) 1991-06-04
JPH0357976A (ja) 1991-03-13
ES2071661T3 (es) 1995-07-01
AU609019B1 (en) 1991-04-18
ATE122794T1 (de) 1995-06-15
MX174353B (es) 1994-05-10
CA1287372C (en) 1991-08-06
US4949001A (en) 1990-08-14
DE68922727T2 (de) 1996-06-20
DE68922727T4 (de) 1996-10-24
EP0408813A1 (en) 1991-01-23
EP0408813B1 (en) 1995-05-17
DE68922727D1 (de) 1995-06-22
KR930010385B1 (ko) 1993-10-23
AR247298A1 (es) 1994-11-30

Similar Documents

Publication Publication Date Title
KR910003395A (ko) 부분 방전 검출 장치 및 방법
Sedding et al. A new sensor for detecting partial discharges in operating turbine generators
BR9305806A (pt) Sistema e processo de medição das caracteristicas de linha de comunicações e sistema para detectar resenca de dispositivo não-linear em linha de comunicação
WO2004088331A2 (en) Method of precisely determining the location of a fault on an electrical transmision system
US4998059A (en) Dual demodulating circuit tracer
ES8704019A1 (es) Un metodo y un aparato para vigilar la produccion de un suceso y para detectar y obtener informacion sobre el suceso al ocurrir este.
FR2572183B1 (fr) Procede et appareil pour la verification par mesure d'impedance de la continuite electrique d'un dispositif de matiere electriquement conductrice
FR2689241B1 (fr) Sonde de mesure de l'etat electrique d'une structure enterree, circuit comportant une telle sonde et procede de prise de mesures.
GB2034486A (en) Method and apparatus for locating faults in electric cables
EP0152904A3 (en) Method and device for the testing of, and/or the measuring at electrically conductive test pieces
DE3171650D1 (en) Method and apparatus for the detection of insufficient dielectric properties of the insulation of coil windings
Black et al. The application of the pulse discrimination system to the measurement of partial discharges in insulation under noisy conditions
Zhou et al. The PD pulse behaviour in rotating machine stator windings
DK1001270T3 (da) Fremgangsmåde til at teste en jordforbindelse
SU798644A1 (ru) Устройство дл определени опорыи гиРл Нды изОл ТОРОВ C пОВРЕж-дЕННОй изОл циЕй лиНии элЕКТРО-пЕРЕдАчи
ATE24051T1 (de) Digitale elektrische laengen- oder winkelmesseinrichtung.
Berler et al. RTD as the valuable tool in partial discharge measurements on rotating machines
Campbell et al. Characteristics of partial discharge pulses from operating rotating machines
Howell Evaluating the Ground Insulation Integrity of Long Buried Conductors by Measuring the Vertical and Longitudinal Components of an Oscillating Magnetic Field Generated by an Applied Alternating Signal Current
CA2178822A1 (en) Method and apparatus for the verification of an electrical insulator device based on the analysis of the electric field along the insulator
SU1388704A1 (ru) Датчик дл регистрации параметров развити поверхностных трещин
SU133536A1 (ru) Способ индукционного каротажа
Zhou et al. On the use of the travelling wave for partial discharge location in rotating machine stator windings
Liu et al. Detection of partial discharge in solid and liquid insulation with an electric field sensor
SU1264009A2 (ru) Устройство дл измерени температуры

Legal Events

Date Code Title Description
A201 Request for examination
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20081022

Year of fee payment: 16

LAPS Lapse due to unpaid annual fee