FR2263521A1 - Method of measuring power consumption of A.C. - uses comparison, inversion and counting of current proportional signals - Google Patents

Method of measuring power consumption of A.C. - uses comparison, inversion and counting of current proportional signals

Info

Publication number
FR2263521A1
FR2263521A1 FR7407182A FR7407182A FR2263521A1 FR 2263521 A1 FR2263521 A1 FR 2263521A1 FR 7407182 A FR7407182 A FR 7407182A FR 7407182 A FR7407182 A FR 7407182A FR 2263521 A1 FR2263521 A1 FR 2263521A1
Authority
FR
France
Prior art keywords
slope
inversion
counting
supply voltage
proportional
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
FR7407182A
Other languages
French (fr)
Other versions
FR2263521B1 (en
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.)
Compteurs Schlumberger SA
Original Assignee
Compteurs Schlumberger SA
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 Compteurs Schlumberger SA filed Critical Compteurs Schlumberger SA
Priority to FR7407182A priority Critical patent/FR2263521A1/en
Publication of FR2263521A1 publication Critical patent/FR2263521A1/en
Application granted granted Critical
Publication of FR2263521B1 publication Critical patent/FR2263521B1/fr
Granted 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

A voltage proportional to a sinusoidal supply voltage and a current proportional to the corresponding supply voltage are sampled. During the same sign half periods of the voltage the current values are integrated to obtain a time varying signal (UA) from a first zero value, with a constant slope, of constant sign. Signal (UA) is compared with a step value (E) which is a function of the amplitude of the supply voltage. The slope of (UA) is inverted when it reaches a value equal to the step value (E). The integration is continued till (UA) again reaches the first zero value. The slope of (UA) is again inverted to obtain an output signal of frequency (f) proportional to the power being measured, a count of the number of periods of the output signal allowing the determination of the energy consumed during this time.
FR7407182A 1974-03-04 1974-03-04 Method of measuring power consumption of A.C. - uses comparison, inversion and counting of current proportional signals Granted FR2263521A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7407182A FR2263521A1 (en) 1974-03-04 1974-03-04 Method of measuring power consumption of A.C. - uses comparison, inversion and counting of current proportional signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7407182A FR2263521A1 (en) 1974-03-04 1974-03-04 Method of measuring power consumption of A.C. - uses comparison, inversion and counting of current proportional signals

Publications (2)

Publication Number Publication Date
FR2263521A1 true FR2263521A1 (en) 1975-10-03
FR2263521B1 FR2263521B1 (en) 1978-06-16

Family

ID=9135736

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7407182A Granted FR2263521A1 (en) 1974-03-04 1974-03-04 Method of measuring power consumption of A.C. - uses comparison, inversion and counting of current proportional signals

Country Status (1)

Country Link
FR (1) FR2263521A1 (en)

Also Published As

Publication number Publication date
FR2263521B1 (en) 1978-06-16

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