KR830006693A - Electronic apparent power meter - Google Patents

Electronic apparent power meter Download PDF

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Publication number
KR830006693A
KR830006693A KR1019810001648A KR810001648A KR830006693A KR 830006693 A KR830006693 A KR 830006693A KR 1019810001648 A KR1019810001648 A KR 1019810001648A KR 810001648 A KR810001648 A KR 810001648A KR 830006693 A KR830006693 A KR 830006693A
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KR
South Korea
Prior art keywords
pulse width
signal proportional
voltage signal
duty cycle
circuit
Prior art date
Application number
KR1019810001648A
Other languages
Korean (ko)
Other versions
KR840002376B1 (en
Inventor
슌이찌 코바야시
Original Assignee
사바 쇼오이찌
도오쿄오 시바우라덴기 가부시기가이샤
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 사바 쇼오이찌, 도오쿄오 시바우라덴기 가부시기가이샤 filed Critical 사바 쇼오이찌
Publication of KR830006693A publication Critical patent/KR830006693A/en
Application granted granted Critical
Publication of KR840002376B1 publication Critical patent/KR840002376B1/en

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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

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

Abstract

내용 없음No content

Description

전자식 피상 전력량계Electronic apparent power meter

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 종래의 피상 전력량계의 구성도.1 is a configuration diagram of a conventional apparent meter.

제2도는 본 발명의 원리를 설명하기 위한 전자식 전력량계의 구성도.2 is a block diagram of an electronic wattmeter for explaining the principle of the present invention.

제3도는 제2도의 펄스 폭 변조회로의 구성도.3 is a configuration diagram of the pulse width modulation circuit of FIG.

제4도는 펄스 폭 변조회로의 동작설명도.4 is an operation explanatory diagram of a pulse width modulation circuit.

제5도는 본 발명의 1실시예를 설명하기 위한 피상 전력파형도.5 is an apparent power waveform diagram for explaining an embodiment of the present invention.

제6도는 이동일 실시예에 의한 피상 전력량계의 구성도이다.6 is a configuration diagram of an apparent watt-hour meter according to an embodiment of the movement.

Claims (1)

급전선의 부하전압에 비례한 전압신호를 펄스폭 변조회로에 의하여 펄스폭 듀티사이클로 변환하는 동시에 급전선의 소비전류에 비례한 신호를 전류변성기에 의하여 전압신호로 변환하여, 상기 펄스 폭 듀티사이클에 의하여 선택적으로 콘트롤 하여 상기 소비전류에 비례한 전압신호를 시분할 승산회로에 취입하여 시분할 승산을 실시하는 전자전력량계에 있어서, 상기 펄스 폭 변조회로와 시분할 승산회로와의 사이에 지연회로를 설치하고, 상기 펄스 폭 듀티사이클을 상기 지연회로에 차례로 보내어, 상기 부하전압에 비례한 전압신호와 소비전류에 비례한 전압신호의 각각의 영점을 검출해서, 양자의 위상분만 상기 펄스 폭 듀티사이클을 유지해서 지연시킨 후, 상기 시분할 승산회로로 시분할 승산을 실시하여 피상 전력을 얻도록 한 것을 특징으로 하는 전자식 피상 전력량계.A voltage signal proportional to the load voltage of the feeder is converted into a pulse width duty cycle by a pulse width modulation circuit, and a signal proportional to the current consumption of the feeder is converted into a voltage signal by a current transformer, and is selectively selected by the pulse width duty cycle. An electronic watt-hour meter which controls voltage by multiplying a voltage signal proportional to the current consumption into a time division multiplication circuit and performs time division multiplication, wherein a delay circuit is provided between the pulse width modulation circuit and the time division multiplication circuit. After the duty cycle is sent to the delay circuit in turn, each zero point of the voltage signal proportional to the load voltage and the voltage signal proportional to the consumption current is detected, and only the phases of both phases are delayed while maintaining the pulse width duty cycle. Time-division multiplication is performed by the time-division multiplication circuit to obtain apparent power. Apparent electronic watt-hour meter to. ※참고사항 : 최초출원에 내용에 의하여 공개하는 것임.※ Note: It is to be disclosed based on the contents of the initial application.
KR1019810001648A 1980-05-29 1981-05-13 Electronic electric-energy meter KR840002376B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7172380A JPS56168166A (en) 1980-05-29 1980-05-29 Electronic apparent watthour meter
JP71723 1980-05-29

Publications (2)

Publication Number Publication Date
KR830006693A true KR830006693A (en) 1983-10-06
KR840002376B1 KR840002376B1 (en) 1984-12-24

Family

ID=13468719

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019810001648A KR840002376B1 (en) 1980-05-29 1981-05-13 Electronic electric-energy meter

Country Status (2)

Country Link
JP (1) JPS56168166A (en)
KR (1) KR840002376B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5935157A (en) * 1982-08-24 1984-02-25 Tokyo Electric Power Co Inc:The Apparatus for measuring electric power
JPS6078357A (en) * 1983-10-05 1985-05-04 Tokyo Electric Power Co Inc:The Watthour meter

Also Published As

Publication number Publication date
KR840002376B1 (en) 1984-12-24
JPS56168166A (en) 1981-12-24
JPS6247255B2 (en) 1987-10-07

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