KR101203625B1 - Solid state Summation Watt-Hour Revenue Meter - Google Patents

Solid state Summation Watt-Hour Revenue Meter Download PDF

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KR101203625B1
KR101203625B1 KR1020120053009A KR20120053009A KR101203625B1 KR 101203625 B1 KR101203625 B1 KR 101203625B1 KR 1020120053009 A KR1020120053009 A KR 1020120053009A KR 20120053009 A KR20120053009 A KR 20120053009A KR 101203625 B1 KR101203625 B1 KR 101203625B1
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power
watt
hour meter
meter
function
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Korean (ko)
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박성근
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서창전기통신 주식회사
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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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
    • G01R11/56—Special tariff meters
    • 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
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • 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

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Abstract

PURPOSE: An electronic integrated watt-hour meter for a power transaction is provided to measure a summing peak of the same time zone, thereby reducing a basic charge of a power use customer. CONSTITUTION: An electronic integrated watt-hour meter is connected to a function of a watt-hour meter of a Korea Electric Power Corporation. An integrated watt-hour meter installed in T/L #A is installed in a MOF second side and measures three-phase voltage/current and performs a metering function as a general watt-hour meter. The integrated watt-hour meter receives a meter pulse signal in real time from a B-watt-hour meter installed in T/L #B and performs a summing function together.

Description

전력거래용 전자식 합성전력량계{Solid state Summation Watt-Hour Revenue Meter}Electronic synthetic electricity meter for power transaction {Solid state Summation Watt-Hour Revenue Meter}

본 발명은 현행 한국전력공사의 전력요금 부가체계를 개선하여 전력사용 고객의 최대 피크부하의 상승을 억제하고 전력과금의 절약과 전력사용의 효율적 관리를 위해 발명된 것이다.
The present invention has been invented for improving the current electricity tariff system of the Korea Electric Power Corporation to suppress the increase of the maximum peak load of the power customers, and to save power billing and efficiently manage the power usage.

현행 한국전력공사의 전력사용 고객에 대한 전력요금 부가체계는 " 기본 요금(피크요금/전력요금)+사용량(사용전력량)요금+역률요금"으로 구성되어 있다.The current electricity tariff system for KEPCO's electric power customers consists of "Basic rate (peak rate / power rate) + power usage (use power) rate + power factor rate".

이중 기본요금은 최대부하를 억제하여 원활한 전력수급을 도모하고자 15분 수요 부하중 최대피크 부하에 대하여 기본요금을 부가하는 방식이다.The base rate is a method of adding a base rate to the maximum peak load among the 15-minute demand loads in order to reduce the maximum load and facilitate smooth supply and demand.

현재 한국전력공사 전력거래용 전력량계 검침실태는 전력사용고객이 한국전력공사의 전력계통으로부터 수전라인 2회선(22.9kV/154kV/345kV) 이상으로 수전을 받게 되는 경우에는 각각의 전력 수전라인(전력사용 고객내)에 3종 요금체계의 전력거래용 전력량계가 수전라인별로 각각 부설되어지고 각각의 전력거래용 전력량계의 사용전력량 및 사용전력을 개별적으로 한국전력공사에서 검침하게 된다.The current electricity meter reading for KEPCO's electricity transactions shows that each power receiving line (power use) is used when a customer who receives power receives two or more lines (22.9kV / 154kV / 345kV) from KEPCO's power system. Electricity meter for electricity transaction of 3 types of tariff system is installed for each power line, and the power consumption and power of each electricity transaction meter are separately read by KEPCO.

그리고 한국전력공사는 매월 1회로 전력사용 고객측에 전력사용 요금고지서를 발송하게 된다. 이때 발송되어지는 한국전력공사의 요금고지서는 각각의 전력거래용 전력량계로부터 검침되어진 사용전력량과 최대 피크 전력을 요금고지에 적용하게 되는 것이다.In addition, KEPCO will send a bill for electricity usage bills once a month. The bills of the Korea Electric Power Corporation, which are sent out at this time, apply the used power and the maximum peak power read from the electricity meter for each electricity transaction.

따라서 기존의 방식에서는 동일시간대의 합상피크 측정이 불가능하다.
Therefore, in the conventional method, it is not possible to measure the sum of peaks at the same time.

본 발명은 상기 방법의 불합리점을 개선하기 위하여 개발된 것이다.
The present invention was developed to improve the absurdity of the method.

본 발명은 합성전력량계를 전력사용 고객측에 부설하여 사용함으로써, 동일시간대의 합산피크를 측정기록할 수 있고, 이에 따라 전력요금을 부가함으로써, 전력사용 고객측의 기본요금을 절감하는 효과가 있도록 구성하는 것이다.
The present invention can measure and record the sum of peaks of the same time period by installing and using a synthetic wattmeter on the customer side of the power usage. It is.

이와 같이 된 본 발명은 합성전력량계를 전력사용 고객측에 부설사용함으로써, 동일시간대의 합성피크를 측정할 수 있고, 현재 시간대별 유효전력량, 현재시간대별 무효전력량, 전월시간대별 유효전력량, 전월시간대별 무효전력량, 당월시간대별 최대전력, 전월시간대별 최대전력, 바로 15분간 수요전력을 정밀하게 계량할 수 있어서 전력사용기본 요금을 절감하는 효과가 있다.(아래표 참조)
According to the present invention as described above, by using a synthetic electricity meter installed on the customer's side, the combined peak of the same time period can be measured, and the effective power amount according to the current time zone, the reactive power amount according to the current time zone, the effective power amount according to the current month time zone, and the previous month time interval. The amount of reactive power, the maximum power by the current time zone, the maximum power by the current time zone, and the demand power can be precisely metered for 15 minutes, thereby reducing the basic electricity bill (see the table below).

Figure 112012039866098-pat00001

Figure 112012039866098-pat00001

본 발명은 한전전력량계 기능을 하는 합성전력량계를 전력사용 고객측에 부설하여 사용할 수 있게 한 구성이다.The present invention is a configuration that can be used to install a composite electricity meter that functions as a KEPCO meter to the customer of the power usage.

종래의 합성계량장치는 아래의 도면과 같이 한전 전력량계와 별도로 합성계량장치를 설치하는 구성으로 되어 있다. (아래도면 참조) The conventional synthetic weighing device is configured to install a synthetic weighing device separately from the KEPCO electricity meter as shown below. (See drawing below)

Figure 112012039866098-pat00002
Figure 112012039866098-pat00002

따라서 기존의 합성계량장치의 계량원리는 펄스카운드 합산방식으로 한전 전력량계의 출력 펄스 신호를 합성계량장치에서 카운트하여 실시간으로 합산하는 방식으로 일반 산업현장에서 많이 사용되어지는 PLC((Programable Logic Controller) 장비와 유사한 작동원리로서 단지 한전의 전력거래를 위한 계량표시항목을 합성계장치에 구현한 것으로 보면 된다.Therefore, the weighing principle of the conventional synthetic weighing device is the pulse counting method, which counts the output pulse signal of the KEPCO electricity meter in the synthetic weighing device and adds it in real time, and is widely used in general industrial sites (Programmable Logic Controller). As a principle of operation similar to the equipment, it can be regarded that only the meter display item for electric power trading of KEPCO is implemented in the synthesis system.

즉, 한전 전력량계들로부터 출력되어지는 계랑펄스를 합성계량장치에서 실시간으로 압력받아 합성계량장치의 CPU에서 15분간 단위로 누적 합산계량하여 이 값을 합성계량장치의 비휘발성 메모리에 15분 간격으로 저장한다.In other words, the cumulative pulses output from the KEPCO electricity meters are pressurized in real time by the synthesis weighing device and accumulated in 15 minute increments in the CPU of the synthesis weighing device, and these values are stored in the nonvolatile memory of the synthesis weighing device every 15 minutes. do.

그리고 매15분 수요전력(kW) 값중에서 가장 높은 15분 수요전략값을 당월 최대피크(Peak demand)로 표시하게 되고 이 값을 기준으로 한전에서는 전력요금 중 기본요금(피크요금)을 전력사용 고객측에 부가하게 되며 기존합성계량장치의 계량알고리즘 및 기존 합성계량장치 부설 개념도는 아래와 같다.In addition, the highest 15-minute demand strategy value among the 15-minute power demand (kW) value is displayed as the peak demand of the current month. Based on this value, KEPCO uses the base rate (peak rate) of the electricity charges. The conceptual diagram of the weighing algorithm of the existing synthetic weighing device and the existing synthetic weighing device is shown below.

6.2 기존합성계량장치의 계량알고리즘
6.2 Weighing Algorithms of Existing Synthetic Weighing Devices

Figure 112012039866098-pat00003
Figure 112012039866098-pat00003

(기존 합성계량장치 부설개념도) (Constructive diagram of existing synthetic weighing device)

Figure 112012039866098-pat00004

Figure 112012039866098-pat00004

이에 대하여 본 발명의 합성전력량계는 한전전력량계의 기능에 기존합성계량장치의 기능을 결합한 기술로 이루어지며 그 개념도는 아래와 같고On the other hand, the composite wattmeter of the present invention is made of a technology that combines the function of the KEPCO with the function of the existing synthesis meter, the conceptual diagram is as follows

(본 발명의 합성전력량계 부설개념도)
(Concept diagram of synthetic power meter of the present invention)

Figure 112012039866098-pat00005

Figure 112012039866098-pat00005

상기 그림과 같이 T/L #A에 설치되는 합성전력량계는 MOF(계기용 변성기)(계기용 변압기(PT)/변류기(CT)) 2차측에 설치되어 3상전압/전류를 측정하게 되고 일반적인 전력량계로서의 계량기능(전력 및 전력량 계량)을 수행하면서 동시에 T/L #B에 설치된 전력량계 B로부터 계량펄스신호를 실시간으로 압력받아 합산기능을 합계수행하게 되는 것이며 As shown in the figure above, the synthetic power meter installed in T / L #A is installed on the secondary side of MOF (mechanical transformer (PT) / current transformer (CT)) to measure three-phase voltage / current, It is to perform the summing function (power and wattage metering) at the same time and totally perform the summing function by receiving the weighing pulse signal from the wattmeter B installed in T / L #B in real time.

그 알고리즘은 아래와 같다.
The algorithm is shown below.

Figure 112012039866098-pat00006

Figure 112012039866098-pat00006

따라서 본 발명은 구체적으로 Therefore, the present invention specifically

1) 전력량계 계량 기능(일반기능 및 전력품질감시 기능) 1) Electricity meter measurement function (general function and power quality monitoring function)

- 0.2급 정밀도 계측 -0.2 class precision measurement

- 유효전력/무효전력(kW/kVAR) 및 유효전력량/무효전력량(kWh/kVARh) 계측 및 계량 표시 -Measure and measure active power / reactive power (kW / kVAR) and active power / reactive power (kWh / kVARh)

- MOF 배율 입력 및 MOF 배율이 적용된 1차측 값으로도 표시가능 -Can also be displayed as the primary value with MOF magnification input and MOF magnification applied

- 계절별/요일별/시간대별 구분 계량(RTC 시계기능 및 달력기능) -Weighing by season / day / time zone (RTC clock function and calendar function)

- 데이터 비휘발성 메모리 저장기능(자체 계량된 항목들) Data non-volatile memory storage function (self-weighted items)

- 3상 전압/전류 계측 표시 3-phase voltage / current measurement display

- 전압/전류 고조파 성분 측정 Voltage / current harmonic content measurement

- Sag/Swell/Flicker/Transient 측정 -Sag / Swell / Flicker / Transient measurement

- 순간정전 측정
-Instantaneous power failure measurement

2) 전력량계 하드웨어 기능 2) Power meter hardware function

- 3상 전원공급방식 및 별도 외부전원공급(90~240 VAC/VDC) 방식 겸용(MOF 정전에 따른 전력량계 정전을 피하고자 본 기능을 추가함) -Combined three-phase power supply and separate external power supply (90 ~ 240 VAC / VDC) (Added this function to avoid power meter power outage due to MOF power failure)

- DI(Digital Input ; kWh/지상kVARh/진상kVARh) Port 3개, DO(Digital Output ; kWh(합성 또는 개별)/지상kVARh/진상kVARh/15분 동기신호) Port 4개 (DI Port 수는 6개, 9개로 확장가능, 합성하고자 하는 전력량계의 숫자에 따라 확장가능함) -3 DI (Digital Input; kWh / ground kVARh / true kVARh) ports, DO (Digital Output; kWh (synthetic or individual) / ground kVARh / true kVARh / 15 minutes synchronous signal) 4 ports (the number of DI ports is 6 , Expandable to 9, expandable according to the number of meters you want to synthesize)

- IR 통신포트 및 한전 원격검침용 통신포트 지원(PLC/무선모뎀 통신플랫폼 제공) -IR communication port and KEPCO remote metering communication port support (PLC / wireless modem communication platform provided)

- 표준시간동기화 포트(GPS 수신기능 내장)
-Standard time synchronization port (GPS receiving function built in)

3) 합산계량 기능 3) Summing function

- 합산하고자 하는 전력량계에 대한 개별 유효전력/무효전력(kW/kVAR) 및 개별 유효전력량/무효전력량(kWh/kVARh) 계측 및 계량 표시 -Measure and measure individual active power / reactive power (kW / kVAR) and individual active power / reactive power (kWh / kVARh) for power meter

- 합산하고자 하는 전력량계의 계량펄스출력에 대한 MOF 배율 입력적용 및 MOF 배율이 적용된 1차측 값으로도 표시가능 -MOF magnification input to the metering pulse output of the electricity meter to be summed up, and can also be displayed as the primary value to which the MOF magnification is applied

- 합산되어진 유효전력/무효전력(kW/kVAR) 및 유효전력량/무효전력량(kWh/kVARh) 계측 및 계량 표시 -Measured and metered active power / reactive power (kW / kVAR) and active power / reactive power (kWh / kVARh)

- 데이터 비휘발성 메모리 저장기능(합산하고자 하는 전력량계의 개별 계량항목 및 합산되어진 계량항목들)
-Data non-volatile memory storage function (individual metering items and total metering items of the electricity meter

4) 종래와 비교하면
4) Compared with the conventional

Figure 112012039866098-pat00007
Figure 112012039866098-pat00007

Figure 112012039866098-pat00008

Figure 112012039866098-pat00008

Claims (1)

본 발명은 한전 전력량계의 기능에 합성전력량계를 결합시킨 구성으로 T/L #A 에 설치되는 합성전력량계는 MOF(계기용 PT/CT) 2차측에 설치가 되어 3상 전압/전류를 측정하게 하여 일반적인 전력량계로서 계량기능을 수행하게 함과 동시에 T/L #B 에 설치된 전력량계 B로부터 계량펄스 신호를 실시간으로 입력받아 합산기능을 함께 수행할 수 있게 구성한 전력거래용 전자식 합성전력량계.In the present invention, the composite electricity meter combined with the function of the KEPCO electricity meter is installed on the T / L #A, which is installed on the secondary side of the MOF (PT / CT for instrument) to measure three-phase voltage and current. Electronic composite electricity meter for power transaction that is configured to perform the weighing function as an electricity meter and to perform the summing function by receiving the metering pulse signal in real time from the electricity meter B installed in T / L #B.
KR1020120053009A 2012-05-18 2012-05-18 Solid state Summation Watt-Hour Revenue Meter KR101203625B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101366156B1 (en) * 2013-08-09 2014-02-24 박성근 Measuring and billing system for summation watt(watt-hour)
KR20230116427A (en) 2022-01-28 2023-08-04 주식회사 남전사 Module and modem possible Summation measuring of metering

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JPS5998312U (en) * 1982-12-23 1984-07-03 株式会社東芝 Weighing recording device
JP2004125593A (en) 2002-10-02 2004-04-22 Toshiba Corp Wattmeter
JP2004138493A (en) 2002-10-17 2004-05-13 Toshiba Corp Electronic watthour meter
JP2005147767A (en) * 2003-11-12 2005-06-09 Toshiba Corp Electric energy billing system and its multi-circuit synthesis electric energy meter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5998312U (en) * 1982-12-23 1984-07-03 株式会社東芝 Weighing recording device
JP2004125593A (en) 2002-10-02 2004-04-22 Toshiba Corp Wattmeter
JP2004138493A (en) 2002-10-17 2004-05-13 Toshiba Corp Electronic watthour meter
JP2005147767A (en) * 2003-11-12 2005-06-09 Toshiba Corp Electric energy billing system and its multi-circuit synthesis electric energy meter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101366156B1 (en) * 2013-08-09 2014-02-24 박성근 Measuring and billing system for summation watt(watt-hour)
KR20230116427A (en) 2022-01-28 2023-08-04 주식회사 남전사 Module and modem possible Summation measuring of metering

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