KR960014949A - How to determine the rated voltage of digital measuring instruments for water / distribution boards - Google Patents

How to determine the rated voltage of digital measuring instruments for water / distribution boards Download PDF

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Publication number
KR960014949A
KR960014949A KR1019940027972A KR19940027972A KR960014949A KR 960014949 A KR960014949 A KR 960014949A KR 1019940027972 A KR1019940027972 A KR 1019940027972A KR 19940027972 A KR19940027972 A KR 19940027972A KR 960014949 A KR960014949 A KR 960014949A
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KR
South Korea
Prior art keywords
rated voltage
digital
value
average value
converted
Prior art date
Application number
KR1019940027972A
Other languages
Korean (ko)
Other versions
KR0167168B1 (en
Inventor
김영돈
Original Assignee
이희종
엘지산전 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.)
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Publication date
Application filed by 이희종, 엘지산전 주식회사 filed Critical 이희종
Priority to KR1019940027972A priority Critical patent/KR0167168B1/en
Publication of KR960014949A publication Critical patent/KR960014949A/en
Application granted granted Critical
Publication of KR0167168B1 publication Critical patent/KR0167168B1/en

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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
    • G01R19/2513—Arrangements for monitoring electric power systems, e.g. power lines or loads; Logging
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
    • 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
    • G01R19/257—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 comparison of different reference values with the value of voltage or current, e.g. using step-by-step method

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

Abstract

본 발명은 수배전반에 이용되는 디지탈 계전기나 디지탈 계측장치들의 입력신호 처리 기술에 관한 것으로, 종래의 측정장치에 있어서는 정격의 전압신호를 아날로그/디자탈변환기에 공급하기 위한 정격전압 조정단계에서 모든 채널의 입력신호에 대해 기 설정된 전압이 출력될때까지 가변저항을 수동으로 조장하여야 하므로 그에 따른 공수 및 제작비가 증가, 원가상승등의 결합이 있었는 바, 본 발명은 이를 해결하기 위하여, 수/배전반의 전력선을 통해 출력되는 전기적신호를 계측장비에 채택된 A/D변환기가 처리할 수 있는 정격전압 근처의 값으로 변환한 다음 수동소자를 이용하여 소정 범위내의 전압신호(VR),(VS),(VT)와 진류신호(RR),(IS),(IT)로 변환하고, A/D변환된 각 채널의 디지탈신호에 대해 실효치 및 평균값을 취하도록 하였다.The present invention relates to an input signal processing technology of digital relays or digital measuring devices used in switchgear. In the conventional measuring device, all channels of the rated voltage adjustment step for supplying the rated voltage signal to the analog / digital converter are provided. Since the variable resistance must be manually promoted until a predetermined voltage is output for the input signal, there is a combination of increase in labor and manufacturing cost, and cost increase. After converting the electrical signal output through the value to the value near the rated voltage that can be processed by the A / D converter adopted in the measuring equipment, the voltage signal (V R ), (V S ), ( V T ) and the real-time signals (R R ), (I S ), and (I T ) are converted, and the effective value and the average value are taken for the digital signals of each A / D converted channel.

Description

수/배전반용 디지탈 계측기의 정격전압 결정방법How to determine the rated voltage of digital measuring instruments for water / distribution boards

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명의 입력신호 처리방법이 적용되는 수/배전반용 디지탈 계측기의 블록도,2 is a block diagram of a digital meter for a hand / switchboard to which the input signal processing method of the present invention is applied;

제3도는 중앙처리장치의 정격전압 연산 방법에 대한 신호 흐름도.3 is a signal flowchart of a method of calculating a rated voltage of a central processing unit.

Claims (1)

수/배전반의 전력선(R,S,T,N)을 통해 출력되는 전기적신호를 계측장비에 채택된 A/D변환기가 처리할 수 있는 정격전압 근처의 값으로 변환한 다음 수동소자를 이용하여 소정 범위내의 전압신호(VR),(VS),(VT)와 전류신호(RR),(IS),(IT)로 변환하는 제1단계와, A/D변환된 각 채널의 디지탈신호에 대해 실효치를 계산하고 평균값을 취하는 제2단계와, 상기 평균값이 기 설정된 기준 범위내에 속하는지를 확인하여 속할때 정격전압으로 설정하여 그 정격전압값을 비휘발성 메모리에 저장하는 제3단계로 이루어지는 것을 특징으로 하는 수/배전반용 디지탈 계측기의 입력신호 처리방법.The electrical signals output through the power lines (R, S, T, and N) of the male and female switchboards are converted to values near the rated voltage that can be handled by the A / D converter adopted in the measuring equipment. The first step of converting the voltage signals (V R ), (V S ), (V T ) and the current signals (R R ), (I S ), (I T ) within the range, and A / D converted channels A second step of calculating an effective value and taking an average value for the digital signal of the second step; and a third step of confirming whether the average value is within a preset reference range and setting the rated voltage when the average value belongs to the non-volatile memory. Input signal processing method of a digital meter for a water / switchboard, characterized in that consisting of. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940027972A 1994-10-28 1994-10-28 Voltage decision method for digital instrument KR0167168B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940027972A KR0167168B1 (en) 1994-10-28 1994-10-28 Voltage decision method for digital instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940027972A KR0167168B1 (en) 1994-10-28 1994-10-28 Voltage decision method for digital instrument

Publications (2)

Publication Number Publication Date
KR960014949A true KR960014949A (en) 1996-05-22
KR0167168B1 KR0167168B1 (en) 1999-03-20

Family

ID=19396386

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940027972A KR0167168B1 (en) 1994-10-28 1994-10-28 Voltage decision method for digital instrument

Country Status (1)

Country Link
KR (1) KR0167168B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200100159A (en) * 2018-03-30 2020-08-25 닛테츠 스테인레스 가부시키가이샤 Ferritic stainless steel sheet and its manufacturing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200100159A (en) * 2018-03-30 2020-08-25 닛테츠 스테인레스 가부시키가이샤 Ferritic stainless steel sheet and its manufacturing method

Also Published As

Publication number Publication date
KR0167168B1 (en) 1999-03-20

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