ES2081273T1 - IMPROVED POWER METER. - Google Patents

IMPROVED POWER METER.

Info

Publication number
ES2081273T1
ES2081273T1 ES94909197T ES94909197T ES2081273T1 ES 2081273 T1 ES2081273 T1 ES 2081273T1 ES 94909197 T ES94909197 T ES 94909197T ES 94909197 T ES94909197 T ES 94909197T ES 2081273 T1 ES2081273 T1 ES 2081273T1
Authority
ES
Spain
Prior art keywords
signals
signal
proportional
supply voltage
constant frequency
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
Application number
ES94909197T
Other languages
Spanish (es)
Inventor
Kenneth Payne
David Alexander Watson
Roger Henry King
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.)
Landis and Gyr Ltd
Original Assignee
Ampy Automotion Digilog 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 Ampy Automotion Digilog Ltd filed Critical Ampy Automotion Digilog Ltd
Publication of ES2081273T1 publication Critical patent/ES2081273T1/en
Pending legal-status Critical Current

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

SE DESCRIBE UN APARATO PARA MEDIR LA POTENCIA ELECTRICA EN DONDE EL APARATO SE ENCUENTRA ADAPTADO PARA GENERAR UNA SEÑAL DE SALIDA PROPORCIONAL AL PRODUCTO DE UNA TENSION DE ALIMENTACION (3) Y UNA CORRIENTE (1) QUE FLUYE A TRAVES DE UNA CARGA CONECTADA. SE UTILIZAN UNA PRIMERA SEÑAL (10) PROPORCIONAL A LA TENSION DE ALIMENTACION (3) Y UNA SEGUNDA SEÑAL (9) PROPORCIONAL A LA CORRIENTE DE CARGA (1) PARA MODULAR EL PERIODO DE DOS SEÑALES DE PORTADORA DE FRECUENCIA CONSTANTE. SE TRANSMITEN UNA TERCERA Y CUARTA SEÑALES (38, 39) DERIVADAS DE LAS SEÑALES MODULADAS A UN MICROPROCESADOR (8), POR EJEMPLO A TRAVES DE DISPOSITIVOS DE AISLAMIENTO ELECTRICO (6, 7). EL PROCESAMIENTO DE LAS TERCERA Y CUARTA SEÑALES PUEDE INCLUIR UNOS CONTADORES (88) Y LA GENERACION DE UNA SEÑAL DE RELOJ DE FRECUENCIA CONSTANTE. LAS SEÑALES SE PUEDEN PROMEDIAR DURANTE UN CIERTO PERIODO DE TIEMPO PARA OBTENER UNA CALIBRACION AUTOMATICA DE POTENCIA CERO.A DEVICE FOR MEASURING ELECTRICAL POWER IS DESCRIBED WHERE THE DEVICE IS ADAPTED TO GENERATE A PROPORTIONAL OUTPUT SIGNAL TO THE PRODUCT OF A SUPPLY VOLTAGE (3) AND A CURRENT (1) THAT FLOWS THROUGH A CONNECTED LOAD. A FIRST SIGNAL (10) PROPORTIONAL TO THE SUPPLY VOLTAGE (3) AND A SECOND SIGNAL (9) PROPORTIONAL TO THE LOAD CURRENT (1) ARE USED TO MODULATE THE PERIOD OF TWO CONSTANT FREQUENCY CARRIER SIGNALS. A THIRD AND FOURTH SIGNALS (38, 39) DERIVED FROM THE MODULATED SIGNALS ARE TRANSMITTED TO A MICROPROCESSOR (8), FOR EXAMPLE THROUGH ELECTRICAL INSULATION DEVICES (6, 7). THE PROCESSING OF THE THIRD AND FOURTH SIGNALS MAY INCLUDE SOME COUNTERS (88) AND THE GENERATION OF A CLOCK SIGNAL OF CONSTANT FREQUENCY. THE SIGNALS CAN BE AVERAGED DURING A CERTAIN PERIOD OF TIME TO OBTAIN AN AUTOMATIC ZERO POWER CALIBRATION.

ES94909197T 1993-03-13 1994-03-11 IMPROVED POWER METER. Pending ES2081273T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9305232A GB2276012B (en) 1993-03-13 1993-03-13 Improved power meter

Publications (1)

Publication Number Publication Date
ES2081273T1 true ES2081273T1 (en) 1996-03-01

Family

ID=10732050

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94909197T Pending ES2081273T1 (en) 1993-03-13 1994-03-11 IMPROVED POWER METER.

Country Status (9)

Country Link
EP (1) EP0688433A1 (en)
JP (1) JPH08507608A (en)
AU (1) AU679213B2 (en)
ES (1) ES2081273T1 (en)
FI (1) FI954296A0 (en)
GB (3) GB2285695B (en)
GR (1) GR960300001T1 (en)
NO (1) NO953608D0 (en)
WO (1) WO1994022023A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2285693B (en) * 1993-03-13 1997-05-21 Ampy Automation Digilog Power Measuring Methods
EP1583976A1 (en) * 2002-12-23 2005-10-12 Power Measurement Ltd Power monitoring integrated circuit with communication interface
EP2672577A4 (en) * 2011-02-04 2016-12-28 Fujitsu Ltd Power strip and power measurement method
RU2589498C1 (en) * 2015-04-16 2016-07-10 федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Южно-Российский государственный политехнический университет (НПИ) имени М.И. Платова" Counter for losses of active power in transformer
CN106569016A (en) * 2015-10-08 2017-04-19 陕西飞机工业（集团）有限公司 Aircraft automatic timing mechanism comprehensive detection device
CN107037390A (en) * 2017-02-10 2017-08-11 国网浙江台州市黄岩区供电公司 Impact load is to electric energy metering error remote monitoring of customer end
CN110244116B (en) * 2018-03-19 2024-04-26 深圳市航智精密电子有限公司 DC instantaneous power metering circuit and quasi-synchronous calculation method thereof
CN117388570B (en) * 2023-12-12 2024-02-13 国网浙江省电力有限公司平阳县供电公司 DC electric energy meter and electric energy metering method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH551013A (en) * 1972-06-07 1974-06-28 Landis & Gyr Ag CIRCUIT ARRANGEMENT FOR PRODUCT FORMATION FROM VOLTAGE AND CURRENT FOR THE PURPOSE OF MEASURING ELECTRICAL ENERGY.
FR2551877B1 (en) * 1983-09-13 1986-01-31 Enertec ELECTRICAL ENERGY METER ESPECIALLY FOR VERY HIGH VOLTAGE
US4801874A (en) * 1987-02-27 1989-01-31 Process Systems, Inc. Method and apparatus for measuring electricity
JPH0821049B2 (en) * 1987-09-24 1996-03-04 株式会社東芝 Multiplier
GB2217027A (en) * 1988-04-05 1989-10-18 Omega Electric Ltd Active power measurement
GB2259779B (en) * 1991-09-19 1996-04-03 Ampy Automation Digilog Improved power meter
GB9120011D0 (en) * 1991-09-19 1991-11-06 Ampy Automation Digilog Improvements in and relating to power meter
GB2285693B (en) * 1993-03-13 1997-05-21 Ampy Automation Digilog Power Measuring Methods

Also Published As

Publication number Publication date
AU6212794A (en) 1994-10-11
GB2285694B (en) 1997-05-21
GB2285694A (en) 1995-07-19
FI954296A (en) 1995-09-13
GB9506332D0 (en) 1995-05-17
WO1994022023A1 (en) 1994-09-29
GB2285695A (en) 1995-07-19
GB9506333D0 (en) 1995-05-17
GB9305232D0 (en) 1993-04-28
GR960300001T1 (en) 1996-02-29
FI954296A0 (en) 1995-09-13
AU679213B2 (en) 1997-06-26
NO953608L (en) 1995-09-13
JPH08507608A (en) 1996-08-13
GB2276012B (en) 1997-05-21
GB2276012A (en) 1994-09-14
EP0688433A1 (en) 1995-12-27
NO953608D0 (en) 1995-09-13
GB2285695B (en) 1997-05-21

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