KR100316485B1 - The electronic watt-hour metter for multiple house hold - Google Patents
The electronic watt-hour metter for multiple house hold Download PDFInfo
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R13/403—Arrangements for displaying electric variables or waveforms using modulation of a light beam otherwise than by mechanical displacement, e.g. by Kerr effect for continuous analogue, or simulated analogue, display using passive display devices, e.g. liquid crystal display or Kerr effect display devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/10—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods using digital techniques
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Abstract
본 발명은 전력량계에 관한 것으로서 특히, 다세대용 전자식 전력량계에 관한 것으로 N세대의 수용가에 계기 1대 설치로 전력량의 계량이 가능하도록 한 다세대용 전자식 전력량계에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a multi-generation electronic electricity meter, and more particularly, to a multi-generation electronic electricity meter which enables metering of electric power by installing one instrument in a N-generation consumer.
종래에 기계식 보통 전력량계는 다세대 주택의 경우 주계량기와 별도로 각세데마다 독립하여 계량기들이 취부되어야 하기 때문에, 다세대에 대한 전력량 계량을 위해서는 N+1개의 전력량계가 일일이 설치되는데 따른 어려움, 설치시간과 설치공간의 확보의 어려움, 공사비용의 상승과 미관상의 문제점을 가지게 된다.Conventionally, the mechanical ordinary electricity meter has to be installed separately for each generation separately from the main meter in the case of a multi-family house, so that it is difficult for N + 1 electricity meters to be installed daily, and the installation time and installation space for electricity generation for multiple generations. Difficulty in securing the cost, increase of construction cost and aesthetic problems.
본 발명은 N개의 세대에 대하여 1대의 전력량계에서; 각 세대(수용가)로 공급되는 사용전력량을 센서수단으로 감지하고, 이 감지된 N세대별 전력량을 디지털 신호 처리 및 마이크로 프로세서에 의해서 적산하여 기억하고, 또 각 사용전력량을 계산하여 표시하며 통신수단을 이용해서 1회의 원격검침만으로 N세대 검침과 동일한 효과를 가질 수 있도록 한 다세대용 전자식 전력량계를 제공한다.The present invention relates to one meter for N generations; The amount of power supplied to each household (consumer) is detected by the sensor means, and the detected power of each generation N is integrated and stored by digital signal processing and microprocessor, and the calculated amount of power is displayed and displayed. It provides a multi-generation electronic electricity meter that has the same effect as the N-generation meter with only one remote meter.
Description
본 발명은 전력량계에 관한 것으로서 특히, 다세대용 전자식 전력량계에 관한 것으로 N세대의 수용가에 계기 1대 설치로 전력량의 계량이 가능하도록 한 다세대용 전자식 전력량계에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a multi-generation electronic electricity meter, and more particularly, to a multi-generation electronic electricity meter which enables metering of electric power by installing one instrument in a N-generation consumer.
종래에 기계식 보통 전력량계는 도1에 나타낸 바와같이 다세대 주택의 경우 전력량 표시기(1a)와 단자판(1b) 등을 가지는 주계량기(1)와 별도로 각 세대마다 독립하여 계량기(2)들이 취부되어야 한다.Conventionally, the mechanical ordinary electricity meter is to be installed independently of the meter 2 for each generation separately from the main meter 1 having the electricity level indicator 1a, the terminal plate 1b, etc. in the case of a multi-family house as shown in FIG.
그러므로 N세대에 대한 전력량 계량을 위해서는 N+1개의 전력량계가 일일이설치도는데 따른 어려움, 설치시간과 설치공간의 확보의 어려움, 공사비용의 상승과 미관상의 문제점을 가지게 된다.Therefore, for power generation metering for generation N, there are difficulties in installing N + 1 electricity meters on a daily basis, difficulty in securing installation time and installation space, increase in construction cost, and aesthetic problems.
본 발명은 N개의 세대에 대하여 1대의 전력량계에서; 각 세대(수용가)로 공급되는 사용전력량을 센서수단으로 감지하고, 이 감지된 N세대별 전력량을 디지털 신호 처리 및 마이크로 프로세서에 의해서 적산하여 기억하고, 또 각 사용전력량을 계산하여 표시하며 통신수단을 이용해서 1회의 원격검침만으로 N세대 검침과 동일한 효과를 가질 수 있도록 한 다세대용 전자식 전력량계를 제공한다.The present invention relates to one meter for N generations; The amount of power supplied to each household (consumer) is detected by the sensor means, and the detected power of each generation N is integrated and stored by digital signal processing and microprocessor, and the calculated amount of power is displayed and displayed. It provides a multi-generation electronic electricity meter that has the same effect as the N-generation meter with only one remote meter.
도1는 종래의 기계식 보통 전력량계의 구성도1 is a configuration diagram of a conventional mechanical ordinary power meter
도2는 본 발명의 다세대용 전자식 전력량계의 블럭 구성도Figure 2 is a block diagram of a multi-generation electronic electricity meter of the present invention
도3은 본 발명의 제 1 실시예의 구성도3 is a block diagram of a first embodiment of the present invention;
도4는 본 발명의 제 2 실시예의 구성도4 is a configuration diagram of a second embodiment of the present invention;
도5는 본 발명의 제 3 실시예의 구성도5 is a configuration diagram of a third embodiment of the present invention.
도2는 본 발명의 다세대용 전자식 전력량계의 블럭 구성도로서 이에 의하는 바와같이 본 발명은;Fig. 2 is a block diagram of a multi-generation electronic electricity meter of the present invention.
회로에 12V전원을 공급하기 위한 제 1 전원부(3)와, 상기 제 2 전원부(3)의 출력으로부터 회로에 5V전원을 공급하기 위한 제 2 전원부(4)와, 2.5V기준전압을 디지털 신호처리기(14)(DSP : Digital Signal Processor)에 공급하는 기준전압부(5)와, 백업 전원을 공급하기 위한 백업전원부(Battery)(6)와, 상기 5V전원부(4) 및 백업전원부(6)의 출력을 안정화시켜 마이크로 프로세서(15)에 공급하기 위한 수퍼콘덴서(7)와, 소정의 상전압을 검출하여 디지털 신호처리기(14)에 입력하기 위한 수단으로서 저항분압기(8)와, 소정의 각 상전류를 검출하여 디지털 신호처리기(14)에 공급하기 위한 수단으로서 전류센서들(9∼13)과, 상기 감지된 전압 및 전류센서 신호를 입력받아 입력신호를 디지털 신호로 변환하고 디지털 변환된신호를 이용해서 각 세대별 사용 전력량의 연산을 수행하는 디지털 신호처리기(14)와, 상기 디지털 신호처리기(14)에서 연산된 값을 입력받아 이 것을 표시출력함과 함께 원격검침을 위한 통신 등의 제어를 수행하는 마이크로 프로세서(15)와, 상기 마이크로 프로세서(15)에서 출력되는 N세대의 전력량을 표시하기 위한 LCD표시부(16)와, 상기 디지털 신호처리기(14)와 마이크로 프로세서(15)에서 처리되는 정보를 저장하는 불휘발성 기억수단으로서 EEPROM(17)과, 상기 처리된 정보의 송수신을 위한 통신연결수단으로서 커넥터(18) 및 광통신포트(19)와, 상기 디지털 신호처리기(14)에 클럭신호를 공급하기 위한 발진회로(20)와, 상기 마이크로 프로세서(15)에 클럭신호를 공급하기 위한 발진회로(21)를 포함하여 구성된다.The digital signal processor includes a first power supply unit 3 for supplying 12V power to the circuit, a second power supply unit 4 for supplying 5V power to the circuit from the output of the second power supply unit 3, and a 2.5V reference voltage. (14) (DSP: a reference voltage section 5 for supplying a digital signal processor, a backup power supply (Battery) 6 for supplying backup power, and the 5V power supply 4 and the backup power supply (6) A supercapacitor 7 for stabilizing the output and supplying it to the microprocessor 15, a resistor voltage divider 8, and a predetermined phase current as a means for detecting and inputting a predetermined phase voltage to the digital signal processor 14; As a means for detecting and supplying the signal to the digital signal processor 14, current sensors 9 to 13 and the sensed voltage and current sensor signals are input to convert the input signal into a digital signal and use the digitally converted signal. To calculate the amount of power used by each household A microprocessor 15 for receiving the signal calculated by the digital signal processor 14, the digital signal processor 14, and displaying and outputting the same, and performing a control such as a communication for remote meter reading, and the microprocessor. EEPROM 17 as a nonvolatile memory means for storing information processed by the digital signal processor 14 and the microprocessor 15, and an LCD display unit 16 for displaying the amount of power of generation N outputted from (15). And a connector 18 and an optical communication port 19 as communication connection means for transmitting and receiving the processed information, an oscillation circuit 20 for supplying a clock signal to the digital signal processor 14, and the microprocessor. And an oscillation circuit 21 for supplying a clock signal to the numeral 15.
이와같이 구성되는 본 발명의 다세대용 전자식 전력량계의 실시형태를 도3 내지 도5에 나타내었다.3 to 5 show embodiments of the multi-generation electronic wattmeter of the present invention configured as described above.
도 3의 경우는 하나의 LCD표시부(16)를 가지고 원(One)보드(22)로 상기 도2의 회로를 구성한 경우로서 각 세대로 인입되는 전력공급선로상에 전류감지기(CT)를 각각 구비한 경우이다.In the case of FIG. 3, the circuit of FIG. 2 is formed by the one board 22 having one LCD display unit 16, and the current sensor CT is provided on the power supply line introduced into each generation. One case.
도4의 경우는 하나의 LCD표시부(16)를 가지고 각 세대에 대응하는 N개의 보드(22a)로 나누어 상기 도2의 회로를 구성한 경우이다.In the case of FIG. 4, the circuit of FIG. 2 is configured by dividing the LCD board 16 into N boards 22a corresponding to each generation.
도5의 경우는 N세대 각각에 대응하는 N개의 LCD표시부(16a)를 가지고 또 N개의 각 세대에 대응하는 N개의 보드(22a)로 상기 도2의 회로를 구성한 경우이다.In the case of Fig. 5, the circuit of Fig. 2 is composed of N LCD display portions 16a corresponding to each of N generations and N boards 22a corresponding to each of N generations.
이하, 도2를 참조하여 본 발명의 작용을 설명한다.2, the operation of the present invention will be described.
제 1 전원부(3)는 저전압 선형 레귤레이터(Regulator)로 로직(Logic)레벨의안정한 전압을 얻기 위하여 입력전압(A상전압)을 12V로 정류 및 평활하여 안정화 직류전압을 출력한다.The first power supply unit 3 rectifies and smoothes the input voltage (phase A voltage) to 12 V to output a stabilized DC voltage in order to obtain a stable voltage at a logic level with a low voltage linear regulator.
이 제 1 전원부(3)는 상전압 96V∼528V 또는 선간전압 166V∼528V의 광범위 입력전압에 대하여 동작하며, 주파수는 50Hz 및 60Hz이다.The first power supply unit 3 operates on a wide range of input voltages of phase voltages 96V to 528V or line voltages 166V to 528V, and the frequencies are 50Hz and 60Hz.
제 2 전원부(4)는 상기 제 1 전원부(3)에서 출력된 12V전압을 5V의 로직전압으로 변환하여 회로에 공급하며, 기준전압부(5)는 5V전압을 입력으로 하여 2.5V의 기준전압을 디지털 신호처리기(14)에 공급한다.The second power supply unit 4 converts the 12V voltage output from the first power supply unit 3 into a logic voltage of 5V and supplies it to the circuit, and the reference voltage unit 5 receives a 5V voltage as a 2.5V reference voltage. Is supplied to the digital signal processor 14.
교류의 전압형태는 +전압과 -전압이 교대로 1분에 60번씩 교대로 나오는데, 바뀔때마다 0볼트[V]의 시점이 나오게 되어 있는 바, 따라서, +측의 전력과 -측의 전력을 모두 읽어내기 위해서는 가상의 중성점 전압이 필요하게 되므로써, 이를 위하여 2.5V의 기준전압을 디지털 신호처리기(14)에 공급하게 되는 것이다.The alternating voltage forms the alternating voltages + and-voltages alternately 60 times per minute. Whenever the voltage changes, a time of 0 volts [V] is generated. Since the virtual neutral voltage is required to read all of them, a 2.5V reference voltage is supplied to the digital signal processor 14 for this purpose.
백업전원부(6)는 리튬배터리를 사용하며 수퍼콘덴서(7)는 이 백업전원부(6)의 전원이나 5V전원부(4)의 출력전원을 이용해서 마이크로 프로세서(15)에 전원을 공급하며, 정전시에도 백업전원을 공급하여 마이크로 프로세서(15)내의 램(RAM)데이타가 소실되지 않도록 한다.The backup power supply unit 6 uses a lithium battery and the supercapacitor 7 supplies power to the microprocessor 15 using the power supply of the backup power supply unit 6 or the output power of the 5V power supply unit 4, The backup power is also supplied to prevent the RAM data in the microprocessor 15 from being lost.
디지털 신호처리기(14)에는 필요한 클럭/샘플링을 위한 신호를 발진회로(20)에서 공급받게 되고, 마이크로 프로세서(15)는 발진회로(21)에서 공급받게 되며, 수정 발진기를 사용해서 안정되고 정밀한 소정 주파수의 발진신호를 생성하여 공급하게 된다.The digital signal processor 14 receives the necessary clock / sampling signal from the oscillator circuit 20, the microprocessor 15 receives the oscillator circuit 21, and uses a crystal oscillator to provide stable and accurate The oscillation signal of frequency is generated and supplied.
저항 분압기(8)는 선형 고저항의 전압 분압회로로 이루어지고, 광범위한 전압에서 정확하며 전압변동에 의한 정확도의 변화를 무시할 수 있는 정도의 것으로 적용하였다.The resistor voltage divider 8 is composed of a linear high resistance voltage divider circuit, which is accurate over a wide range of voltages, and can be applied to a degree of negligible change in accuracy due to voltage variation.
상전압은 저항 분압기(8)에서 분압되어 디지털 신호처리기(14)에 입력되는 데, 저손실로 상전압을 낮추는데 사용하는 2개의 고저항으로 이루어지며, 각 저항화로는 저저항 고정저항이고, 이 작은 저항은 입력전압을 전력량계의 IC회로에 입력하기 위하여 적절하게 나눈다.The phase voltage is divided by the resistance divider 8 and input to the digital signal processor 14, and is composed of two high resistances used to lower the phase voltage with low loss, and each resistance path is a low resistance fixed resistance. The resistor is divided appropriately to input the input voltage into the IC circuit of the meter.
이들 모든 저항기는 25ppm의 최대 온도계수를 갖는 금속피막 저항기이고 각 저항은 300Vrms의 정격 동작전압을 가진다.All these resistors are metallized resistors with a maximum temperature coefficient of 25 ppm and each resistor has a rated operating voltage of 300 Vrms.
전류센서들(9∼13)은 변류기(CT)를 이용하며, 변류용 분류저항은 25ppm의 최대 온도계수를 갖는 금속피막 저항기이고, 1차전류가 흐를 때 변류기의 2차에서 과전압 손산을 방지하기 위하여 변류기 2차단자와 병렬로 센서안에 있다(이 것이 2차 전압을 제한한다).The current sensors 9-13 use a current transformer CT, and the current-limiting resistor for the current flow is a metal film resistor having a maximum temperature coefficient of 25 ppm, to prevent overvoltage loss in the secondary of the current transformer when the primary current flows. In parallel with the current transformer secondary terminals in the sensor (this limits the secondary voltage).
전류센서들(9∼13)에서 각각 감지된 전류값들은 디지털 신호처리기(14)에 입력된다.Current values sensed by the current sensors 9-13 are input to the digital signal processor 14, respectively.
디지털 신호처리기(14)는 3개의 A/D변환부와 디지털 신호처리부(DSP : Digital Signal Processing)로 내부 구성수단이 이루어지며, 입력된 전압과 전류신호를 아날로그/디지털 변환하고 이 디지털 변환된 값을 이용해서 전력량 연산을 수행한다.The digital signal processor 14 includes three A / D converters and a digital signal processing unit (DSP) for internal configuration. The digital signal processor 14 converts the input voltage and current signals into analog and digital signals, and converts these digitally converted values. Calculate the amount of power using.
A/D변환은 입력에 대하여 2.4kHz의 샘플링 속도록 입력을 샘플링하는데, 이들 샘플의 분해도는 부호비트를 포함하여 21비트이다.The A / D conversion samples the input at a sampling rate of 2.4 kHz on the input, with the resolution of these samples being 21 bits, including the sign bit.
제 1 의 A/D변환부는 3개의 전압입력을 샘플링하고, 제 2 의 A/D변환부는 3개의 전류입력을 샘플링하고, 제 3 의 A/D변환부는 B상의 다른 전압이나 전류를 샘플링한다(2소자 전력량계는 선간전압을 발생하기 위하여 다른 상전압과 조합하는 B상 전압을 필요로 한다).The first A / D converter samples three voltage inputs, the second A / D converter samples three current inputs, and the third A / D converter samples another voltage or current on phase B ( Two-element wattmeters require a B-phase voltage in combination with other phase voltages to generate line voltage).
DSP에서는 이 샘플링된 디지털값을 가지고 연산을 수행하는데, 전력량의 계산은 측정된 전압과 전류의 곱으로 결정된다.The DSP performs calculations on this sampled digital value, and the power calculation is determined by the product of the measured voltage and current.
본 발명에서는 기본적으로kWH와 kW 최대수요전력을 측정한다. 또한 하루 4 요율의 time-of-use(kWH 및 kW 최대수요전력), 무효 전력량(kVAh, kVARh + 무효 최대수요전력량), 양방향성 전력측정 및 전계량기간 동안의 계량 데이타의 부하기록이 가능하다.In the present invention, kWH and kW maximum demand power are basically measured. It is also possible to record loads of time-of-use (kWH and kW peak demand), reactive power (kVAh, kVARh + reactive peak demand), bidirectional power measurement and metering data during the entire metering period at 4 rates per day.
한편, 디지털 신호처리기(14)에는 전력손실에 응답하여 플래그(flag)하는 정전보상회로를 가지고 있다(관련신호 PFail(A)).On the other hand, the digital signal processor 14 has an electrostatic compensation circuit which flags in response to power loss (related signal PFail (A)).
디지털 신호처리기(14)의 연산결과(B상정보, 주파수정보, 전력정보 삭제/기록 등)는 마이크로 프로세서(15)로 전달된다(관련신호 Phase B, 120Hz(C), Whr Del, Whr Rec, Varh Del, Varh Rec).The calculation result (B phase information, frequency information, power information deletion / recording, etc.) of the digital signal processor 14 is transmitted to the microprocessor 15 (related signals Phase B, 120 Hz (C), Whr Del, Whr Rec, Varh Del, Varh Rec).
마이크로 프로세서(15)는 데이타 처리와 통신제어를 수행한다.The microprocessor 15 performs data processing and communication control.
마이크로 프로세서(15)에는 내부에 LCD구동수단, 롬(ROM), 램(RAM), 유니버살 비동기 송수신수단(UART), 타이머수단, 듀얼클록입력수단 및 저전력 모드와 같은 하부 기능을 포함한다.The microprocessor 15 includes lower functions such as an LCD driving means, a ROM, a RAM, a universal asynchronous transmission and reception means (UART), a timer means, a dual clock input means, and a low power mode.
정상동작중에 마이크로 프로세서(15)는 디지털 신호처리기(14)로부터 주파수(4.14MHz)를 받고, 정전이 되면 저전력 동작을 하는 수정 발진자(21)로 변경하여 정전동안 시간을 측정하면서 시간을 유지한다.During normal operation, the microprocessor 15 receives a frequency (4.14 MHz) from the digital signal processor 14, changes to a crystal oscillator 21 that performs low power operation in case of power failure, and maintains time while measuring time during power failure.
마이크로 프로세서(15)는 적산된 전력값을 LCD구동수단을 이용해서 LCD표시부(16)에 표시해 준다.The microprocessor 15 displays the accumulated power value on the LCD display unit 16 using the LCD driving means.
또, 마이크로 프로세서(15)는 통신 제어를 수행하는데, 이 것은 광통신포트 (19)를 이용해서 상기 계량 정보에 대한 전자적 접근을 확보해준다.The microprocessor 15 also performs communication control, which secures electronic access to the metering information using the optical communication port 19.
광통신포트(19)의 송수신기는 850mm적외선 센서이며, 상기 UART로부터의 출력으로 구동되며, 전력량계가 테스트모드(Test Mode)에 놓여 있을 때 광통신포트(21)에서 수신 LED를 통해서 마이크로 프로세서(15)에 의하여 받은 Wh펄스를 출력해 준다.The transceiver of the optical communication port 19 is a 850mm infrared sensor, driven by the output from the UART, and is connected to the microprocessor 15 through the receive LED at the optical communication port 21 when the electricity meter is in the test mode. Outputs Wh pulse received by
정전동안의 모든 중요 전력량계 및 프로그램 데이타는 비휘발성 메모리인 EEPROM(17)에 저장되며, 현재 계량기간의 TOU데이타는 마이크로 프로세서(15)내의 램(RAM)에 저장되고, 이 것은 백업전원부(6)의 백업전원에 의해서 정전시에도 손실되지 않고 실시간으로 유지된다.All important power meters and program data during power failure are stored in EEPROM (17), which is a nonvolatile memory, and the TOU data of the current metering period is stored in RAM in the microprocessor (15), which is the backup power supply (6). It is maintained in real time without being lost even in case of power failure by backup power of.
즉, 최대 수요전력이나 TOU계산을 적산하는데 필요한 모든 정보로서, 계기상수, VARh 또는 VAh의 총 kWh 또는 총에너지, TOU용 최대 수요전력, 누적 최대수요전력 또는 요율 최대 수요전력, TOU데이타의 이력, 최대 수요전력의 리세트 누적수, 정전누적횟수, 데이타 변환 누적수 등이다.That is, all the information needed to integrate the maximum demand power or TOU calculation, the instrument constant, total kWh or total energy of VARh or VAh, maximum demand power for TOU, cumulative maximum demand or rate maximum demand power, history of TOU data, The cumulative number of resets of maximum demand power, cumulative number of power failures, and cumulative number of data conversions.
이와같이 하여, 하나의 계량기에서 N세대에 대한 각각의 저압과 전류를 검출하고, 이 검출된 전압과 전류의 곱으로 유효전력과 무효전력을 측정(연산)하고, 이것들을 시간에 대하여 적산하여 측정값에 대한 출력펄스를 제공함으로써, N세대에 대한 각각의 전력량을 저장, 표시, 광통신출력함으로써, 다세대의 전자식 전력량계량 시스템으로 작용하게 되었다.In this way, a single meter detects each of the low voltages and currents for generation N, measures (calculates) the active and reactive powers by the product of the detected voltages and currents, and integrates them over time to measure the measured values. By providing the output pulses for the power generation, each of the power amount for the N generation to store, display, and optical communication output, thereby serving as a multi-generation electronic power metering system.
본 발명의 다세대용 전자식 전력량계에 의하면, 적어도 2세대 이상의 다세대 수용가에 1대의 계량기 설치로 통합 전력량 계량 시스템을 제공할 수 있다.According to the multi-generation electronic electricity meter of the present invention, it is possible to provide an integrated power metering system by installing one meter in a multi-generation customer of at least two generations or more.
또한, 본 발명은 다세대용 전자식 전력량계에 의하면 원격 검침시에 1번의 검침만으로 N번 검침한 것과 동일한 효과를 거둘 수 있다.In addition, according to the multi-generation electronic electricity meter, the present invention can achieve the same effect as that of N readings with only one reading during remote reading.
또한, 본 발명의 다세대용 전자식 전력량계는 1대의 계량기만 설치하면 다세대의 개별 전력적산/표시/계량이 가능하기 때문에, 종전에 비하여 설치공간의 확보가 용이하고, 설치작업이 편리하며, 설치비용이나 미관성의 문제점을 해소할 수 있다.In addition, since the multi-generation electronic electricity meter of the present invention is capable of multi-generation individual power integration / display / metering by installing only one meter, it is easier to secure an installation space than before, and the installation work is convenient. The problem of aesthetics can be solved.
또한, 경년변화에 따른 기계적, 전기적 성능이나 오차 변화 및 내후성능 등에 견딜 수 있고, 사용되는 전 부하범위에 걸쳐서 정밀측정이 가능하며, 2종 계기로도 활용 가능한 특징이 있다.In addition, it can withstand mechanical and electrical performance or error change and weathering performance according to aging change, and can measure precisely over the entire load range used, and can be used as two kinds of instruments.
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