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JPS573049A - Electronic type reactive power meter - Google Patents

Electronic type reactive power meter

Info

Publication number
JPS573049A
JPS573049A JP7638780A JP7638780A JPS573049A JP S573049 A JPS573049 A JP S573049A JP 7638780 A JP7638780 A JP 7638780A JP 7638780 A JP7638780 A JP 7638780A JP S573049 A JPS573049 A JP S573049A
Authority
JP
Japan
Prior art keywords
circuit
time
delay
signal
voltage
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
JP7638780A
Other languages
Japanese (ja)
Inventor
Shunichi Kobayashi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP7638780A priority Critical patent/JPS573049A/en
Priority to KR1019810001694A priority patent/KR840002377B1/en
Priority to US06/267,604 priority patent/US4463311A/en
Priority to DE3121448A priority patent/DE3121448C2/en
Priority to GB8116433A priority patent/GB2076976B/en
Priority to FR8110714A priority patent/FR2483625B1/en
Publication of JPS573049A publication Critical patent/JPS573049A/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
    • G01R21/06—Arrangements for measuring electric power or power factor by measuring current and voltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/127—Arrangements for measuring electric power or power factor by using pulse modulation
    • G01R21/1271—Measuring real or reactive component, measuring apparent energy

Landscapes

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

Abstract

PURPOSE:To improve response characteristics, frequency characteristics, etc. by digitally delaying the output of a pulse width modulating circuit then multiplying the same by load current. CONSTITUTION:The output of a pulse width modulating circuit 8 to which load voltage is supplied from a potential transformer 7 is held by a prescribed time by a delay circuit 8, and is converted to the signal in delayed phase. A delay time detecting circuit 10 transmits a signal at the zero cross time and peak time of a voltage signal, and sets the time corresponding to a phase angle pi/2 to the circuit 9. On the other hand, the consuming current from a current transformer 12 is conducted via a resistance 13 to a time division multiplier 14, the multiplied output whereof is supplied via an integrating circuit 15, a voltage-pulse frequency converting circuit 16, and a frequency dividing circuit 17 to a display circuit 18, by which reactive electric power is displayed. Since the reactive electric power is obtained by digital signal processing in this way, the delay in response is eliminated and the influence of frequencies is eliminated.
JP7638780A 1980-05-29 1980-06-06 Electronic type reactive power meter Pending JPS573049A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP7638780A JPS573049A (en) 1980-06-06 1980-06-06 Electronic type reactive power meter
KR1019810001694A KR840002377B1 (en) 1980-06-06 1981-05-16 Electronic electric-energy meter
US06/267,604 US4463311A (en) 1980-05-29 1981-05-27 Electronic electric-energy meter
DE3121448A DE3121448C2 (en) 1980-05-29 1981-05-29 Electronic electricity meter
GB8116433A GB2076976B (en) 1980-05-29 1981-05-29 Electronic electric-energy meter
FR8110714A FR2483625B1 (en) 1980-05-29 1981-05-29 ELECTRONIC ELECTRICAL ENERGY METER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7638780A JPS573049A (en) 1980-06-06 1980-06-06 Electronic type reactive power meter

Publications (1)

Publication Number Publication Date
JPS573049A true JPS573049A (en) 1982-01-08

Family

ID=13603913

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7638780A Pending JPS573049A (en) 1980-05-29 1980-06-06 Electronic type reactive power meter

Country Status (2)

Country Link
JP (1) JPS573049A (en)
KR (1) KR840002377B1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58149033A (en) * 1982-03-02 1983-09-05 Minolta Camera Co Ltd Flash emitting device
JPS5935154A (en) * 1982-08-24 1984-02-25 Tokyo Electric Power Co Inc:The Electronic type reactive electric energy meter
JPS5935157A (en) * 1982-08-24 1984-02-25 Tokyo Electric Power Co Inc:The Apparatus for measuring electric power
US4620157A (en) * 1984-06-22 1986-10-28 Yokogawa Hokushin Electric Corporation Reactive power to DC signal converter
US5262715A (en) * 1991-07-22 1993-11-16 Landis & Gyr Betriebs Ag Arrangement for the measurement of reactive power or reactive energy

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5226257A (en) * 1975-08-22 1977-02-26 Mitsubishi Electric Corp Electric power system supervisory equipment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5226257A (en) * 1975-08-22 1977-02-26 Mitsubishi Electric Corp Electric power system supervisory equipment

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58149033A (en) * 1982-03-02 1983-09-05 Minolta Camera Co Ltd Flash emitting device
JPH0462056B2 (en) * 1982-03-02 1992-10-05 Minolta Camera Kk
JPS5935154A (en) * 1982-08-24 1984-02-25 Tokyo Electric Power Co Inc:The Electronic type reactive electric energy meter
JPS5935157A (en) * 1982-08-24 1984-02-25 Tokyo Electric Power Co Inc:The Apparatus for measuring electric power
JPH0471187B2 (en) * 1982-08-24 1992-11-13 Tokyo Denryoku Kk
JPH0472191B2 (en) * 1982-08-24 1992-11-17 Tokyo Denryoku Kk
US4620157A (en) * 1984-06-22 1986-10-28 Yokogawa Hokushin Electric Corporation Reactive power to DC signal converter
US5262715A (en) * 1991-07-22 1993-11-16 Landis & Gyr Betriebs Ag Arrangement for the measurement of reactive power or reactive energy

Also Published As

Publication number Publication date
KR830006694A (en) 1983-10-06
KR840002377B1 (en) 1984-12-24

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