DE2708075A1 - PROCEDURE FOR ELECTRONIC KILOWATT-HOUR METERS - Google Patents

PROCEDURE FOR ELECTRONIC KILOWATT-HOUR METERS

Info

Publication number
DE2708075A1
DE2708075A1 DE19772708075 DE2708075A DE2708075A1 DE 2708075 A1 DE2708075 A1 DE 2708075A1 DE 19772708075 DE19772708075 DE 19772708075 DE 2708075 A DE2708075 A DE 2708075A DE 2708075 A1 DE2708075 A1 DE 2708075A1
Authority
DE
Germany
Prior art keywords
zero point
correction
electronic
calibration
counter
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.)
Ceased
Application number
DE19772708075
Other languages
German (de)
Inventor
Artur Dr Ing Seibt
Omer Viaene
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.)
Heliowatt Werke Elektrizitaet GmbH
Original Assignee
Heliowatt Werke Elektrizitaet GmbH
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 Heliowatt Werke Elektrizitaet GmbH filed Critical Heliowatt Werke Elektrizitaet GmbH
Priority to DE19772708075 priority Critical patent/DE2708075A1/en
Priority to NL7714129A priority patent/NL7714129A/en
Priority to LU78836A priority patent/LU78836A1/en
Priority to BE184773A priority patent/BE863499A/en
Priority to DK65178A priority patent/DK65178A/en
Priority to IT20270/78A priority patent/IT1092871B/en
Priority to CH168278A priority patent/CH630179A5/en
Priority to GB6718/78A priority patent/GB1563677A/en
Priority to FR7804949A priority patent/FR2381317A1/en
Priority to IE370/78A priority patent/IE46337B1/en
Publication of DE2708075A1 publication Critical patent/DE2708075A1/en
Ceased 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
    • G01R11/02—Constructional details
    • G01R11/17—Compensating for errors; Adjusting or regulating means therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/14—Compensating for temperature change
    • 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)
  • Testing Or Calibration Of Command Recording Devices (AREA)
  • Electric Clocks (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Electromechanical Clocks (AREA)
  • Measurement Of Current Or Voltage (AREA)

Description

HELIOWATT WERKE 1000 Berlin 12, den 9. 2. 1977, - ,, w ,,'/ ιHELIOWATT WERKE 1000 Berlin 12, February 9, 1977, - ,, w ,, '/ ι Elektrizitäts-Gesellschaft mbH * Wilmersdorfer Straße 39 Z / U ö U /Elektrizitäts-Gesellschaft mbH * Wilmersdorfer Strasse 39 Z / U ö U /

Λ Ε 43 Go/We 0577.09 Λ Ε 43 Go / We 0577.09

Verfahren für elektronische KilowattstundenzählerProcedure for electronic kilowatt-hour meters

Die Erfindung betrifft ein Verfahren für elektronische Kilowattstundenzähler zur selbsttätigen Nullpunkts- und Eichungskorrektur.The invention relates to a method for electronic kilowatt hour meters automatic zero point and calibration correction.

Jedes Meßgerät für analoge Meßgrößen weist im wesentlichen zwei Fehler auf: einen Nullpunktfehler und einen Eichungsfehler (bzw. Steigungsfehler). Andere Meßfehler sind den genannten gegenüber vergleichsweise geringfügig. Der Erfindung liegt die Aufgabe zugrunde, zur Herabsetzung des Arbeitsaufwandes bei der Herstellung bzw. Prüfung elektronischer Kilowattstundenzähler, zur Eliminierung der beiden genannten Fehler Über die gesamte Lebensdauer des Gerätes und zur Heraufsetzung der Meßgenauigkeit ein Verfahren für eine automatische Nullpunkts- und Eichungskorrektur zur Eliminierung der Toleranzen und Driften aller Bauelemente zu schaffen.Every measuring device for analog measured quantities has essentially two errors: a zero point error and a calibration error (or slope error). Other measurement errors are comparatively minor compared to those mentioned. The invention is based on the task to reduce the workload the production or testing of electronic kilowatt hour meters, for elimination of the two errors mentioned Over the entire service life of the device and to increase the measurement accuracy, a method for an automatic zero point and calibration correction to eliminate the tolerances and drifts of all components.

Diese Aufgabe ist durch die Erfindung gelöst, die in den kennzeichnenden Teilen der Patentansprüche dargestellt ist.
Sie wird nachfolgend näher erläutert.This object is achieved by the invention which is presented in the characterizing parts of the patent claims.
It is explained in more detail below.

Der Eingang des die analogen Signale verarbeitenden Meßgeräts erhält einen vorzugsweise elektronischen Umschalter. Dieser Umschalter legt den Eingang zunächst an Nullpotential. Darufhin wird das Meßergebnis kontrolliert: weicht es vom Sollwert Null ab, so wird eine Korrekturgröße erzeugt und gespeichert, die die Nullpunktabweichung aufhebt. Im nächsten Schritt wird der Eingang an eine geeignete Referenzgröße geschaltet; das Meßergebnis wird wieder daraufhin untersucht, ob es mit dem Sollwert übereinstimmt: bei Abweichungen wird wieder eine Korrekturgröße erzeugt und gespeichert, die den betreffenden Fehler aufhebt. The input of the measuring device processing the analog signals receives a preferably electronic switch. This changeover switch initially applies the input to zero potential. The measurement result is then checked: deviates if it decreases from the setpoint zero, a correction variable is generated and stored, which cancels the zero point deviation. The next step is the input a suitable reference variable switched; the measurement result is then again examines whether it agrees with the target value: if there are deviations, again a correction variable is generated and stored that cancels the error in question.

Anschließend kann dann die unbekannte Meßgröße nullpunkt- und eichungsfehlerfrei gemessen werden.The unknown measured variable can then be free of zero point and calibration errors be measured.

8 0 9 8 3 - / ü 4 7 88 0 9 8 3 - / o 4 7 8

Anfangs- und Endpunkt der Übertragungskennlinie des Meßgeräts liegen fest. Somit bleibt als Restfehler die Krümmung bzw. die Nichtlinearität der Ubertragungskennl in ie.The start and end point of the transfer characteristic of the measuring device are fixed. Thus, the curvature or the non-linearity of the transmission characteristic remains as a residual error in ie.

Die Nullpunkt- und Eichungskorrektur wird vorzugsweise automatisch, jedoch nicht grundsätzlich vor jeder Messung durchgeführt, sondern nur in ausreichend kurzen zeitlichen Abständen, um inzwischen aufgetretene Bauelementeänderungen zu kompensieren. In der praktischen Ausfuhrung der Nullpunkt- und Eichungskorrektur sind die Korrekturgrößen analog zu speichern. Bei Meßgeräten, die analoge Größen in Digitalwerte umsetzen, wozu auch die Kilowattstundenzähler gehören, läßt sich die Korrektur vorteilhaft ausschließlich digital durchführen.The zero point and calibration correction is preferably automatic, however not generally carried out before each measurement, but only at sufficiently short time intervals for component changes that have occurred in the meantime to compensate. In the practical execution of the zero point and calibration correction, the correction values are to be stored in the same way. For measuring devices that convert analog values into digital values, including the kilowatt hour counter belong, the correction can advantageously be carried out exclusively digitally.

Erfindungsgemäß wird vorgeschlagen, elektronische Kilowattstundenzähler mit automatischer Nullpunkt- und Eichungskorrektur zu versehen. Hierzu wird in ausreichenden zeitlichen Abständen an die Spannungs- und Stromeingänge des elektronischen Zählers Nullpotential bzw. eine Referenzgröße gelegt. Das jeweilige Meßergebnis wird auf Abweichungen von den Sollwerten kontrolliert, und Korrekturwerte werden erzeugt und gespeichert und bei der Energiemessung berücksichtigt.According to the invention it is proposed to provide electronic kilowatt hour meters with automatic zero point and calibration correction. For this purpose, zero potential or a reference value is applied to the voltage and current inputs of the electronic counter at sufficient time intervals. The respective measurement result is checked for deviations from the target values, and correction values are generated and stored and taken into account in the energy measurement.

8 0 9 8 C : 7 88 0 9 8 C: 7 8

Claims (2)

-X- 2 7 U 8 ü Patentansprüche:-X- 2 7 U 8 ü Claims: 1) Verfahren fur elektronische Kilowattstundenzähler zur selbsttätigen Nullpunkt- und Eichungskorrektur, dadurch gekennzeichnet, daß in ausreichenden zeitlichen Abständen durch einen elektronischen Umschalter die Eingänge des Zählers an Nullpotential geschaltet und bei der folgenden Messung eine etwaige Abweichung vom Sollwert festgestellt und gespeichert wird, daß in ausreichenden zeitlichen Abständen die Eingänge des Zählers an eine oder mehrere Referenzgrößen gelegt werden und bei der folgenden Messung eine etwaige Abweichung vom Sollwert festgestellt und gespeichert wird, und daß bei der Messung des Energieverbrauchs beide gespeicherten Korrekturwerte zur Kompensation aller Nullpunkt- und Eichungsfehler verwendet werden.1) Procedure for electronic kilowatt hour meters for automatic zero point and calibration correction, characterized in that the inputs of the counter is switched to zero potential and during the following measurement any deviation from the nominal value is determined and stored that in sufficient time intervals the inputs of the counter are connected to one or more reference values and for the following measurement one any deviation from the nominal value is determined and stored, and that both stored correction values are used to compensate for all zero point and calibration errors when measuring the energy consumption will. 2) Verfahren fur elektronische Kilowattstundenzähler zur selbsttätigen Nullpunkt- und Eichungskorrektur, nach Anspruch I1 dadurch gekennzeichnet, daß ein elektronischer Kilowattstundenzähler Über eine Vorrichtung zur selbsttätigen Auslösung der Ermittlung und Kompensation der Nullpunkt- und Eichungsfehler in regelmäßigen Zeilabständen verfügt.2) Method for electronic kilowatt hour counter for automatic zero point and calibration correction, according to claim I 1, characterized in that an electronic kilowatt hour counter has a device for automatically triggering the determination and compensation of the zero point and calibration errors at regular line intervals. 809834/0478809834/0478
DE19772708075 1977-02-22 1977-02-22 PROCEDURE FOR ELECTRONIC KILOWATT-HOUR METERS Ceased DE2708075A1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
DE19772708075 DE2708075A1 (en) 1977-02-22 1977-02-22 PROCEDURE FOR ELECTRONIC KILOWATT-HOUR METERS
NL7714129A NL7714129A (en) 1977-02-22 1977-12-20 PROCEDURE FOR THE AUTOMATIC ZERO POINT AND CALIBRATION CORRECTION OF AN ELECTRONIC KILOWATT HOUR METER.
LU78836A LU78836A1 (en) 1977-02-22 1978-01-09 PROCEDURE FOR ELECTRONIC KILOWATT-HOUR METERS
BE184773A BE863499A (en) 1977-02-22 1978-01-31 PROCESS APPLICABLE TO ELECTRONIC KILOWAT-HOUR METERS
DK65178A DK65178A (en) 1977-02-22 1978-02-14 ELECTRONIC KILOWATTIM METER METHODS
IT20270/78A IT1092871B (en) 1977-02-22 1978-02-16 AUTOMATIC CORRECTOR DEVICE FOR ELECTRONIC KILOWATTOMETERS
CH168278A CH630179A5 (en) 1977-02-22 1978-02-16 Method for automatic zero-point and calibration correction in an electronic kilowatt/hour meter
GB6718/78A GB1563677A (en) 1977-02-22 1978-02-20 Error correction in electrical meters
FR7804949A FR2381317A1 (en) 1977-02-22 1978-02-21 PROCEDURE FOR THE AUTOMATIC ZERO POINT CORRECTION AND CALIBRATION OF ELECTRONIC KILOWATHEUREMETERS
IE370/78A IE46337B1 (en) 1977-02-22 1978-02-21 Error correction in electrical meters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772708075 DE2708075A1 (en) 1977-02-22 1977-02-22 PROCEDURE FOR ELECTRONIC KILOWATT-HOUR METERS

Publications (1)

Publication Number Publication Date
DE2708075A1 true DE2708075A1 (en) 1978-08-24

Family

ID=6002091

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19772708075 Ceased DE2708075A1 (en) 1977-02-22 1977-02-22 PROCEDURE FOR ELECTRONIC KILOWATT-HOUR METERS

Country Status (10)

Country Link
BE (1) BE863499A (en)
CH (1) CH630179A5 (en)
DE (1) DE2708075A1 (en)
DK (1) DK65178A (en)
FR (1) FR2381317A1 (en)
GB (1) GB1563677A (en)
IE (1) IE46337B1 (en)
IT (1) IT1092871B (en)
LU (1) LU78836A1 (en)
NL (1) NL7714129A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3048015A1 (en) * 1979-12-21 1982-08-19 Deutsche Zähler-Gesellschaft Nachf. A. Stepper & Co (GmbH & Co), 2000 Hamburg Electricity and thermal meter linearising correction circuit - has analogue-to-frequency converter and nulls and differentiates pulse rate
DE4334766A1 (en) * 1993-10-12 1995-04-13 Siemens Ag Electronic measuring device
DE102004010707A1 (en) * 2004-03-04 2005-09-22 Austriamicrosystems Ag Energy meter arrangement and method for calibration
US7609051B2 (en) 2003-12-30 2009-10-27 Austriamicrosystems Ag Energy metering system
CN112816934A (en) * 2021-03-01 2021-05-18 云南电网有限责任公司电力科学研究院 Method and system for judging error self-monitoring accuracy and timeliness of electric energy meter
CN113466778A (en) * 2021-07-01 2021-10-01 深圳市先行电气技术有限公司 Ammeter calibration method

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH673714A5 (en) * 1985-05-02 1990-03-30 Zellweger Uster Ag
EP0240102A3 (en) * 1986-03-31 1988-07-27 Robinton Products Inc. Power meter having self-test function
DE3775690D1 (en) * 1986-04-09 1992-02-13 Mueller & Weigert MULTIFUNCTIONAL MEASURING DEVICE.
US4884021A (en) * 1987-04-24 1989-11-28 Transdata, Inc. Digital power metering
CA1290400C (en) * 1987-04-24 1991-10-08 Scott H. Hammond Digital power metering
FR2625323B1 (en) * 1987-12-24 1990-06-15 Electricite De France INTERFACING DEVICE FOR THE CALIBRATION OF SINGLE-PHASE AND THREE-PHASE ELECTRICAL POWER METERS
EP0866976B1 (en) * 1995-12-05 2001-03-21 Siemens Aktiengesellschaft Electronic measurement device
US8756029B2 (en) 2011-01-21 2014-06-17 Schneider Electric USA, Inc. Non-linearity calibration using an internal source in an intelligent electronic device
CN103592616B (en) * 2013-11-14 2016-05-04 江苏林洋能源股份有限公司 One can the full-automatic concurrent type frog single-point of autonomous type modification method
CN115951289A (en) * 2023-02-20 2023-04-11 重庆云宸新能源科技有限公司 Current sensor zero calibration system and method and electric automobile

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2031045A1 (en) * 1970-06-24 1971-12-30 Wandel & Goltermann Measuring device with automatic calibration device
US3667041A (en) * 1969-12-04 1972-05-30 Blh Electronics Automatic zero circuitry for indicating devices
DE2553631B1 (en) * 1975-11-28 1977-01-20 Siemens Ag Automatic gain compensation for measuring sets - uses transistor attenuators controlled by digital counter and reference source

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934197A (en) * 1973-12-03 1976-01-20 Corning Glass Works Automatic calibration system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3667041A (en) * 1969-12-04 1972-05-30 Blh Electronics Automatic zero circuitry for indicating devices
DE2031045A1 (en) * 1970-06-24 1971-12-30 Wandel & Goltermann Measuring device with automatic calibration device
DE2553631B1 (en) * 1975-11-28 1977-01-20 Siemens Ag Automatic gain compensation for measuring sets - uses transistor attenuators controlled by digital counter and reference source

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
In Betracht gezogene ältere Anmeldung: DE-OS 26 30 959 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3048015A1 (en) * 1979-12-21 1982-08-19 Deutsche Zähler-Gesellschaft Nachf. A. Stepper & Co (GmbH & Co), 2000 Hamburg Electricity and thermal meter linearising correction circuit - has analogue-to-frequency converter and nulls and differentiates pulse rate
DE4334766A1 (en) * 1993-10-12 1995-04-13 Siemens Ag Electronic measuring device
US7609051B2 (en) 2003-12-30 2009-10-27 Austriamicrosystems Ag Energy metering system
DE102004010707A1 (en) * 2004-03-04 2005-09-22 Austriamicrosystems Ag Energy meter arrangement and method for calibration
US7474087B2 (en) 2004-03-04 2009-01-06 Austriamicrosystems Ag Energy meter system and method for calibration
DE102004010707B4 (en) * 2004-03-04 2013-08-22 Austriamicrosystems Ag Energy meter arrangement and method for calibration
CN112816934A (en) * 2021-03-01 2021-05-18 云南电网有限责任公司电力科学研究院 Method and system for judging error self-monitoring accuracy and timeliness of electric energy meter
CN113466778A (en) * 2021-07-01 2021-10-01 深圳市先行电气技术有限公司 Ammeter calibration method

Also Published As

Publication number Publication date
BE863499A (en) 1978-05-16
IT1092871B (en) 1985-07-12
IT7820270A0 (en) 1978-02-16
IE780370L (en) 1978-08-22
DK65178A (en) 1978-08-23
FR2381317A1 (en) 1978-09-15
IE46337B1 (en) 1983-05-04
GB1563677A (en) 1980-03-26
CH630179A5 (en) 1982-05-28
FR2381317B1 (en) 1982-04-30
LU78836A1 (en) 1978-06-09
NL7714129A (en) 1978-08-24

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