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NO953608L - Fremgangsmåte og apparat for effektmåling - Google Patents

Fremgangsmåte og apparat for effektmåling

Info

Publication number
NO953608L
NO953608L NO953608A NO953608A NO953608L NO 953608 L NO953608 L NO 953608L NO 953608 A NO953608 A NO 953608A NO 953608 A NO953608 A NO 953608A NO 953608 L NO953608 L NO 953608L
Authority
NO
Norway
Prior art keywords
signals
proportional
signal
supply voltage
period
Prior art date
Application number
NO953608A
Other languages
English (en)
Other versions
NO953608D0 (no
Inventor
Kenneth Payne
David Alexander Watson
Roger Henry King
Original Assignee
Ampy Automation Digilog
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 Ampy Automation Digilog filed Critical Ampy Automation Digilog
Publication of NO953608L publication Critical patent/NO953608L/no
Publication of NO953608D0 publication Critical patent/NO953608D0/no

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/133—Arrangements for measuring electric power or power factor by using digital technique
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G01R19/252—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques using analogue/digital converters of the type with conversion of voltage or current into frequency and measuring of this frequency
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
    • G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

Det er beskrevet et apparat for måling av elektrisk effekt, som er tilpasset for å frembringe et utgangssignal propor- sjonalt med produktet av en forsyningsspenning (3) og en strøm (1) som flyter gjennom en tilkoblet belastning. Et første signal (10) proporsjonalt med forsyningsspenningen (3) og et andre signal (9) proporsjonalt med belastningsstrømmen (1) utnyttes for å modulere perioden av to bærebølgesignaler av konstant frekvens. Tredje og fjerde signaler (38, 39) utledet fra de modulerte signaler overføres til en mikroprosessor (8), slik som via elektrisk isolerende innretninger (6, 7). Behandlingen av det tredje og fjerde signal kan innbefatte tellere (88) og generering av et klokkesignal av konstant frekvens. Gjennomsnittet av signalene kan bestemmes over en tidsperiode for å fremskaffe automatisk nulleffektkalibrering.
NO953608A 1993-03-13 1995-09-13 Fremgangsmåte og apparat for effektmåling NO953608D0 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9305232A GB2276012B (en) 1993-03-13 1993-03-13 Improved power meter
PCT/GB1994/000491 WO1994022023A1 (en) 1993-03-13 1994-03-11 Improved power meter

Publications (2)

Publication Number Publication Date
NO953608L true NO953608L (no) 1995-09-13
NO953608D0 NO953608D0 (no) 1995-09-13

Family

ID=10732050

Family Applications (1)

Application Number Title Priority Date Filing Date
NO953608A NO953608D0 (no) 1993-03-13 1995-09-13 Fremgangsmåte og apparat for effektmåling

Country Status (9)

Country Link
EP (1) EP0688433A1 (no)
JP (1) JPH08507608A (no)
AU (1) AU679213B2 (no)
ES (1) ES2081273T1 (no)
FI (1) FI954296A (no)
GB (3) GB2285695B (no)
GR (1) GR960300001T1 (no)
NO (1) NO953608D0 (no)
WO (1) WO1994022023A1 (no)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2276011B (en) * 1993-03-13 1997-05-14 Ampy Automation Digilog Improvements in and relating to power meters
WO2004061462A1 (en) * 2002-12-23 2004-07-22 Power Measurement Ltd. Power monitoring integrated circuit with communication interface
KR101474678B1 (ko) * 2011-02-04 2014-12-17 후지쯔 가부시끼가이샤 테이블 탭 및 전력 측정 방법
RU2589498C1 (ru) * 2015-04-16 2016-07-10 федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Южно-Российский государственный политехнический университет (НПИ) имени М.И. Платова" Счетчик потерь активной электроэнергии в трансформаторе
CN106569016A (zh) * 2015-10-08 2017-04-19 陕西飞机工业（集团）有限公司 一种飞机自动定时机构综合检测装置
CN107037390A (zh) * 2017-02-10 2017-08-11 国网浙江台州市黄岩区供电公司 冲击负荷对电能计量误差远程监测客户端
CN110244116B (zh) * 2018-03-19 2024-04-26 深圳市航智精密电子有限公司 直流瞬时功率的计量电路及其准同步计算方法
CN110968290A (zh) * 2019-12-26 2020-04-07 深圳市锐能微科技有限公司 四象限乘法器和集成电路
CN117388570B (zh) * 2023-12-12 2024-02-13 国网浙江省电力有限公司平阳县供电公司 直流电能表及电能计量方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH551013A (de) * 1972-06-07 1974-06-28 Landis & Gyr Ag Schaltungsanordnung zur produktbildung aus spannung und strom zwecks messung elektrischer energie.
FR2551877B1 (fr) * 1983-09-13 1986-01-31 Enertec Compteur d'energie electrique notamment pour la tres haute tension
US4801874A (en) * 1987-02-27 1989-01-31 Process Systems, Inc. Method and apparatus for measuring electricity
JPH0821049B2 (ja) * 1987-09-24 1996-03-04 株式会社東芝 乗算器
GB2217027A (en) * 1988-04-05 1989-10-18 Omega Electric Ltd Active power measurement
GB9120011D0 (en) * 1991-09-19 1991-11-06 Ampy Automation Digilog Improvements in and relating to power meter
GB2286250B (en) * 1991-09-19 1996-04-03 Ampy Automation Digilog Improved power meter
GB2276011B (en) * 1993-03-13 1997-05-14 Ampy Automation Digilog Improvements in and relating to power meters

Also Published As

Publication number Publication date
EP0688433A1 (en) 1995-12-27
AU679213B2 (en) 1997-06-26
GB2276012A (en) 1994-09-14
FI954296A0 (fi) 1995-09-13
GB2285695B (en) 1997-05-21
JPH08507608A (ja) 1996-08-13
FI954296A (fi) 1995-09-13
GB2285695A (en) 1995-07-19
ES2081273T1 (es) 1996-03-01
GB2285694A (en) 1995-07-19
GB9305232D0 (en) 1993-04-28
AU6212794A (en) 1994-10-11
NO953608D0 (no) 1995-09-13
GR960300001T1 (en) 1996-02-29
GB2276012B (en) 1997-05-21
GB9506332D0 (en) 1995-05-17
WO1994022023A1 (en) 1994-09-29
GB9506333D0 (en) 1995-05-17
GB2285694B (en) 1997-05-21

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