KR870004310A - Digital integrated power meter - Google Patents

Digital integrated power meter Download PDF

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KR870004310A
KR870004310A KR1019850007346A KR850007346A KR870004310A KR 870004310 A KR870004310 A KR 870004310A KR 1019850007346 A KR1019850007346 A KR 1019850007346A KR 850007346 A KR850007346 A KR 850007346A KR 870004310 A KR870004310 A KR 870004310A
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voltage
microprocessor
current
power meter
integrated power
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KR1019850007346A
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Korean (ko)
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KR900001681B1 (en
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유광
권승만
김종수
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오창석
재단법인 한국전기연구소
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R11/00Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
    • G01R11/30Dynamo-electric motor meters
    • G01R11/32Watt-hour meters

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

Abstract

내용 없음No content

Description

계수형 적산전력량계Digital integrated power meter

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

제1도-제2도는 본 발명의 제1실시상태를 나타낸 블럭도로서, 제1도는 본 발명의 단상형 블럭도.1 to 2 are block diagrams showing a first embodiment of the present invention, and FIG. 1 is a single-phase block diagram of the present invention.

제2도는 본 발명의 3상 3선식 블럭도.2 is a three-phase three-wire block diagram of the present invention.

제5도는 본 발명의 제2실시 상태를 나타낸 블럭도로서, 제5도는 본 발명의 단상형 블럭도.5 is a block diagram showing a second embodiment of the present invention, and FIG. 5 is a single-phase block diagram of the present invention.

Claims (24)

전압전류변환부(B)의 전압변환회로(1)와 전류변환회로(2)를 각각 절대치회로(3), 샘플앤드호울더(4), 상사-계수변환기(5)를 통해 마이크로 프로세서부(A)의 마이크로프로세서에 입력되게 하고, 전압전류변환부(B)의 전압변환회로(1) 및 전류변환 회로(2)와 마이크로프로세서부(A)의 마이크로 프로세서간에 전압×전류부호검출기(6)를 삽설하여서 된 계수형 적산전력량계.The voltage converting circuit 1 and the current converting circuit 2 of the voltage current converting unit B are respectively connected to the microprocessor unit through the absolute value circuit 3, the sample and holder 4, and the similarity-coefficient converter 5. A voltage x current code detector 6 is inputted to the microprocessor of A) and between the voltage converting circuit 1 of the voltage current converting section B and the current converting circuit 2 and the microprocessor of the microprocessor section A. Digital integrated power meter by inserting. 제1항에 있어서, 마이크로프로세서의 일측에 외부송수신용 시리얼포트(13)를 내장하고, 시간표시기, 시간카운터와 적산전력량, 역률, 피크사용전력, 차등적산전력량을 표시하는 표시기 및 정전대비 데이터 저장용 불휘발성 메모리를 연결하여 마이크로프로세서부(A)를 구성한 계수형 적산전력량계.The apparatus of claim 1, wherein an external transmission / reception serial port 13 is built in one side of the microprocessor, and a time indicator, a time counter and an indicator of integrated power, power factor, peak power, and differential power are stored and data is stored against power failure. A counting integrated power meter in which a microprocessor unit (A) is formed by connecting a nonvolatile memory. 제1항에 있어서, 2개의 전압 전류변화부(B)와 마이크로프로세서부(A)간의 마이크로프로세서 입력형성 구조를 2중으로하고 각 상사-계수변환기(5)와 마이크로 프로세서부(A)간에 데코더(7)를 삽설하여 3상 3선식으로 구성한 계수형 적산전력량계.The microprocessor input forming structure between the two voltage current change unit (B) and the microprocessor unit (A) is doubled, and a decoder (D) is formed between each of the similarity-coefficient converters (5) and the microprocessor unit (A). Counting integrated power meter composed of 3-phase 3-wire system by inserting 7). 제1항에 있어서, 전압 전류변환부(B)및 마이크로 프로세서 입력 형성구조를 3중으로 하여 3상 4선식으로 구성한 계수형 적산전력량계The counting integrated power meter according to claim 1, wherein the voltage-current converter B and the microprocessor input forming structure are tripled and configured in a three-phase four-wire system. 제1항에 있어서, 전압 전류변환부(B) 출력에 연결된 2개의 절대치회로(3) 출력과 마이크로프로세서부(A)입력에 연결된 상사-계수변환기(5), 샘플앤드호울더(4)의 입력간에 아나로그곱셈기(8)를 삽설하고 전압 전류변환부(B)와 마이크로프로세서부(A)간에 전압 및 전류부호검출기(9)를 설치하여서 된 계수형 적산전력량계.2. The output of two absolute value circuits (3) connected to the output of the voltage and current converter (B) and the similarity-coefficient converter (5) and the sample and holder (4) connected to the input of the microprocessor (A). A counting integrated power meter in which an analog multiplier (8) is inserted between inputs and a voltage and current code detector (9) is provided between the voltage current converter (B) and the microprocessor unit (A). 제5항에 있어서, 2개의 전압, 전류변환부(B)와 마이크로프로세서부(A)사이의 마이크로프로세서 입력형성구조를 2중으로 하고, 상부 전압, 전류변환부(B)와 마이크로프로세서부(A) 사이에는 전압×전류부호검출기(6)를, 하부전압, 전류변환부(B)와 마이크로프로세서부(A) 사이에는 전압×전류부호검출기(6), 전압 및 전류 부호검출기(9)를 삽설하여서 된 계수형 적산전력량계.6. The microprocessor input forming structure between the two voltage and current converters (B) and the microprocessor unit (A) is made double, and the upper voltage, current converter (B) and the microprocessor unit (A). A voltage x current code detector 6 and a voltage x current code detector 6 and a voltage and current code detector 9 are inserted between the lower voltage and current converters B and the microprocessor unit A). Digital integrated power meter. 제5항에 있어서, 전압 전류변환부(B) 및 마이크로프로세서 입력형서 구조를 3중으로 하여 3상 4선식으로 구성한 계수형 적산전력량계.6. The counting integrated power meter according to claim 5, wherein the voltage-current converting unit (B) and the microprocessor input form structure are tripled and configured in a three-phase four-wire system. 제5항에 있어서, 마이크로프로세서 입력형서구조의 샘플윈드호울더(4)와 마이크로프로세서부(A) 간에 주파수변환기(10)를 삽설하여서 된 계수형 적산전력량계.6. The countable integrated power meter according to claim 5, wherein a frequency converter (10) is inserted between the sample wind holder (4) and the microprocessor unit (A) of the microprocessor input form structure. 제8항에 있어서, 2개의 전압, 전류변환부(B)와 마이크로프로세서부(A)간의 마이크로프로세서 입력형성구조를 2중으로 하여 3상 3선식으로 구성한 계수형 적산전력량계.10. The counting integrated power meter according to claim 8, configured as a three-phase three-wire system with a double microprocessor input formation structure between two voltage and current converters (B) and a microprocessor unit (A). 제8항에 있어서, 3개의 전압, 전류변환부(B)와 마이크로프로세서부(A)간의 마이크로프로세서 입력형성구조를 3중으로 하여 3상 4선식으로 구성한 계수형 적전전력량계.10. The digital electrostatic voltmeter according to claim 8, wherein the three-phase four-wire system is configured by three microprocessor input formation structures between the three voltage and current converters (B) and the microprocessor unit (A). 전압, 전류변환부(B)의 출력이 아나로그곱셉기(8), 아나로그적분기(11), 저래치회로(3), 샘플앤드 호울드(4), 주파수변환기(10)를 통해 마이크로프로세서부 (A)에 입력되고 아나로그 적분기(11) 출력과 마이크로 프로세서부(A)간에는 전압×전류 부호검출기(6)을, 전압, 전류변환부(B)의 출력과 마이크로프로세서부(A)간에는 전압 및 전류부호검출기(9)를 각각 삽설하여서 된 계수형 적선전력량계.The output of the voltage and current converter (B) is microprocessor through the analog multiplier (8), the analog integrator (11), the low latch circuit (3), the sample and holder (4), and the frequency converter (10). A voltage X current code detector 6 is input between the analog integrator 11 output and the microprocessor unit A, and is input between the output of the voltage and current converter B and the microprocessor unit A. A counting watt-hour meter in which the voltage and current code detectors are inserted respectively. 제11항에 있어서, 2개의 전압, 전류변환부(B)와 마이크로프로세서부(A) 사이의 마이크로프로세서 입력형성구조를 이중으로 하여 3상 3선식으로 구성한 계수형 적산 전력량계.12. The digital integrated power meter according to claim 11, configured as a three-phase three-wire system with a double microprocessor input forming structure between two voltage and current converters (B) and a microprocessor unit (A). 제11항에 있어서, 3개의 전압, 전류변환부(B)와 마이크로프로세서부(A)사이의 마이크로프로세서 입력형성 구조를 3중으로 하여 3상 3선식으로 구성한 계수형 적산전력량계.12. The counting integrated power meter according to claim 11, comprising three phases and three wires, with three microprocessor input formation structures between three voltage and current converters (B) and microprocessor units (A). 제11항에 있어서, 마이크로프로세서 입력형서구조의 샘플앤드호울더(4)와 마이크로프로세서부(A)간에 주파수변환기(10)를 삽설하여서 된 계수형 적산전력량계.12. The counting integrated power meter according to claim 11, wherein a frequency converter (10) is inserted between the sample and holder (4) of the microprocessor input type structure and the microprocessor unit (A). 제14항에 있어서, 2개의 전압, 전류변화부(B)와 마이크로프로세서부(A)간의 마이크로프로세서 입력형성구조를 2중으로 하여 3상 3선식으로 구성한 계수형 적산전력량계.15. The counting integrated power meter according to claim 14, comprising a three-phase three-wire system having a double microprocessor input formation structure between two voltage and current change sections (B) and a microprocessor section (A). 제14항에 있어서, 3개의 전압, 전류변환부(B)와 마이크로프로세서부(A)간의 마이크로프로세서 입력형성구조를 3중으로 하여 3상 4선식으로 구성한 계수형 적산전력량계.15. The digital integrated power meter according to claim 14, comprising three phases and four wires in which a microprocessor input formation structure between three voltage and current converters (B) and a microprocessor unit (A) is tripled. 제11항과 제14항에 있어서, 마이크로프로세서 입력형성구조의 아나로그적분기(11)과 마이크로프로세서부(A)간에 비교기(12)를 삽설하여서 된 계수형 적산전력량계.15. The counting integrated power meter according to claim 11 or 14, wherein a comparator (12) is inserted between the analog integrator (11) and the microprocessor portion (A) of the microprocessor input forming structure. 제17항에 있어서, 2개의 전압, 전류변환부(B)와 마이크로프로세서부(A)간의 마이크로프로세서 입력형성구조를 2중으로 하여 3상 3선식으로 구성한 계수형 적산전력량계.18. The counting integrated power meter according to claim 17, wherein the multi-phase three-wire system is configured by double-mapping the microprocessor input forming structure between two voltage and current converters (B) and the microprocessor unit (A). 제17항에 있어서, 3개의 전압, 전류변환부(B)와 마이크로프로세서부(A)간의 마이크로프로세서 입력형성구조를 3중으로 하여 3상 4선식으로 구성한 계수형 적산 전력량계.18. The digital integrated power meter according to claim 17, wherein the three-phase four-wire system is composed of three microprocessor input formation structures between the three voltage and current converters (B) and the microprocessor unit (A). 제1항 내지 제19항에 있어서, 포토커플러(P,T)의 일측에 OR게이트를 연결한 탭단(a1-an)을 구성하고 각 OR게이트의 출력(S1-Sn)을 마이크로프로세서부(A)측에 연결하여 그 정보를 전소케하며, 탭변환스위치(S,W)에 의해 전압과 전류를 변환토록 된 전압, 전류변환부(B)를 구비한 계수형 적산전력량계.20. The apparatus of claim 1, wherein the tab ends a 1-a n connecting the OR gates to one side of the photocouplers P and T are configured, and the outputs S 1 -S n of the respective OR gates are micro. A counting integrated power meter provided with a voltage and current converter (B) connected to the processor (A) side to transmit all the information and to convert voltage and current by a tap-change switch (S, W). 제11항, 제14항, 제17항에 있어서, 콘덴서(C1)(C2), 저항(R3)의 일축을 적분기용 IC에 타측은 각각 아나로그스위치(SW1)(SW2)에 연결하여, 이 스위치(SW1)(SW2)의 모우드 변환에 의해 서로 교번하여 적분을 행하는 아나로그 적분기(11)를 구비한 계수형 적산전력량계.The analog switch SW 1 (SW 2 ) according to claim 11, 14 and 17, wherein the one axis of the capacitor C 1 (C 2 ) and the resistor R 3 are respectively connected to the integrator IC. A digital integrated power meter having an analog integrator (11) connected to each other and performing integration by alternating with each other by the mode conversion of the switch (SW 1 ) (SW 2 ). 전압과 전류의 신호를 전압×전류부호검출기(6)를 통해 찾아내어 먼저 전압신호의 제로점에서 가로채기가 걸려 마이크로 프로세서 내부의 카운터를 스타트시킨후 전류신호의 제로점에 의한 가로채기를 기다렸다가 가로채기 신호가 오면 카운터를 정지시켜 그 값에 의해 계산하는 계수형 적선전력량계의 하드웨어에 의한 역률계산방법.The voltage and current signals are found through the voltage × current code detector (6). First, they intercept at the zero point of the voltage signal, start the counter inside the microprocessor, and wait for the intercept by the zero point of the current signal. A power factor calculation method based on hardware of a counting watt-hour meter that stops a counter and calculates it based on the value when a saturation signal comes. 두 입력인 전압과 전류 신호간의 위상차를 위상검출회로에 의해 전압값으로 변환시킨 후 상사 계수변환기(5) 또는 주파수변환기(10)에 입력시켜 마이크로프로세서로 하여금 정보를 전송받아 역률값을 계산하는계수형 전산전력량계의 하드웨어에 의한 역률계산방법.A coefficient for calculating a power factor value by converting a phase difference between two input voltages and a current signal into a voltage value by a phase detection circuit and inputting the same to a similar coefficient converter 5 or a frequency converter 10 so that a microprocessor receives information. A power factor calculation method using hardware of a type computational power meter. 카운터를 이용하여 전압과 전류의 최대값(또는 최소값) 사이의 간격을 계산하고, 이 값에 의해 룩업(Look-up) 테이블 방식에 의해 역률을 계산하는 계수형 적산전력량계의 소프트웨어에 의한 역률계산방법.Power factor calculation method by software of digital integrated power meter that calculates interval between maximum value (or minimum value) of voltage and current by using counter and calculates power factor by look-up table method by this value . ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019850007346A 1985-10-05 1985-10-05 Digital watthour meter KR900001681B1 (en)

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KR900001681B1 KR900001681B1 (en) 1990-03-19

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