KR900008284A - 전기량 검출기 - Google Patents

전기량 검출기 Download PDF

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Publication number
KR900008284A
KR900008284A KR1019890011611A KR890011611A KR900008284A KR 900008284 A KR900008284 A KR 900008284A KR 1019890011611 A KR1019890011611 A KR 1019890011611A KR 890011611 A KR890011611 A KR 890011611A KR 900008284 A KR900008284 A KR 900008284A
Authority
KR
South Korea
Prior art keywords
sampling
arithmetic processing
values
alternating current
time
Prior art date
Application number
KR1019890011611A
Other languages
English (en)
Other versions
KR920005055B1 (ko
Inventor
스나오 스즈끼
Original Assignee
시끼 모리야
미쓰비시전기 주식회사
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 시끼 모리야, 미쓰비시전기 주식회사 filed Critical 시끼 모리야
Publication of KR900008284A publication Critical patent/KR900008284A/ko
Application granted granted Critical
Publication of KR920005055B1 publication Critical patent/KR920005055B1/ko

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Classifications

    • 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
    • G01R19/255—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 counting of pulses during a period of time proportional to voltage or current, delivered by a pulse generator with fixed frequency
    • 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
    • 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
    • G01R19/02—Measuring effective values, i.e. root-mean-square values

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

내용 없음.

Description

전기량 검출기
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 이 발명의 한 실시예에 의한 진폭치 연산수단을 나타내는 원리를 표시한 블록도,
제2도는 이 발명의 연산수단에 의하여 얻어진 진폭치 연산결과의 주파수특성도,
제3도는 이 발명의 연산수단을 실현시키는 전기량 검출기의 하드웨어 구성을 나타내는 블록도.

Claims (1)

  1. 전력계통의 교류전기량을 상기 교류전기량의 전격주파수에 있어서, 주기의마다 주기 T에서 샘플링하는샘플링수단과, 상기 샘플링된 아나로그치를 디지탈치로 변화시키는 아나로그/디지탈치에 의하여 연산처리시켜 천력계동의 교류전기량의 진폭치를 검출하는 연산처리수단등을 구비한 전기량 검출기에 있어서, 당해 샘플링시각 t에서 소정샘플링수 n만큼 떨어진 시각 t-nT(n=0,1.2,3.4)에 있어서의 상기 샘플링수단에 의한 상기 교류 전기량의 샘플링치 y(t), y(t-T), Y(t-T), y(t-2T), y(t-3T), y(t-4T)에서 상기 연산처리수단이 다음식 Y=〔1/8.[y(0)2=4·{y(T)2+y(3T)2}+6·y(2T)2+y(4T)2〕½에 의해 연산처리하여 진폭치를 검출하는 것을 특징으로 하는 전기량 검출기.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019890011611A 1988-11-16 1989-08-16 전기량 검출기 KR920005055B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP63290701A JPH0737998B2 (ja) 1988-11-16 1988-11-16 電気量検出器
JP88-290701 1988-11-16
JP290701 1988-11-16

Publications (2)

Publication Number Publication Date
KR900008284A true KR900008284A (ko) 1990-06-04
KR920005055B1 KR920005055B1 (ko) 1992-06-26

Family

ID=17759394

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890011611A KR920005055B1 (ko) 1988-11-16 1989-08-16 전기량 검출기

Country Status (6)

Country Link
US (1) US4943766A (ko)
EP (1) EP0371192B1 (ko)
JP (1) JPH0737998B2 (ko)
KR (1) KR920005055B1 (ko)
AU (1) AU606528B2 (ko)
DE (1) DE68904743T2 (ko)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2231673B (en) * 1989-04-18 1993-01-27 Standard Telephones Cables Ltd Direct current meter circuit
JP3119541B2 (ja) * 1993-03-25 2000-12-25 株式会社東芝 周波数検出方式
JPH0715865A (ja) * 1993-06-25 1995-01-17 Oki Electric Ind Co Ltd 電源回路の保護装置
EP0638811B1 (en) * 1993-08-12 2002-11-27 Rockwell International Corporation Estimator of amplitude and frequency of a noisy biased sinusoid from short bursts of samples
US5519560A (en) * 1994-03-01 1996-05-21 Eaton Corporation Unity gain filter for current transformer
US5652507A (en) * 1996-01-31 1997-07-29 Eaton Corporation Apparatus and method for measuring an AC current which saturates the core of a current transformer
CN101512871B (zh) * 2006-08-02 2012-06-13 姚子文 产生多相交流电力系统中电气实体的相量表示的设备和方法
CN104635015B (zh) * 2010-10-12 2017-05-10 国网河南省电力公司南阳供电公司 超高压电网和电流带负荷检测装置
KR101774245B1 (ko) * 2013-02-18 2017-09-19 엘에스산전 주식회사 Ｒｍｓ 검출기 및 이를 적용한 차단기
KR102635868B1 (ko) * 2016-01-26 2024-02-14 삼성전자주식회사 전자 장치 및 그의 제어방법
US11092464B2 (en) 2019-01-14 2021-08-17 Hamilton Sundstrand Corporation High speed AC input sensor conversion

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2314870A1 (de) * 1973-03-26 1974-10-10 Siemens Ag Anordnung zur digitalen oder analogen messung von effektivwerten oder leistungen
JPS618675A (ja) * 1984-06-22 1986-01-16 Mitsubishi Electric Corp 電気量計測装置
US4672501A (en) * 1984-06-29 1987-06-09 General Electric Company Circuit breaker and protective relay unit
JPH0828934B2 (ja) * 1984-07-31 1996-03-21 株式会社東芝 保護制御装置
JPH06105266B2 (ja) * 1987-12-28 1994-12-21 三菱電機株式会社 デジタル保護継電器
JPH0737997B2 (ja) * 1988-10-31 1995-04-26 三菱電機株式会社 電気量検出器

Also Published As

Publication number Publication date
US4943766A (en) 1990-07-24
EP0371192A1 (en) 1990-06-06
JPH02136751A (ja) 1990-05-25
AU606528B2 (en) 1991-02-07
EP0371192B1 (en) 1993-02-03
DE68904743D1 (de) 1993-03-18
AU3626689A (en) 1990-05-24
KR920005055B1 (ko) 1992-06-26
DE68904743T2 (de) 1993-05-19
JPH0737998B2 (ja) 1995-04-26

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