WO2021144902A1 - Energy use amount calculation device, used power amount monitoring system and program - Google Patents

Energy use amount calculation device, used power amount monitoring system and program Download PDF

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Publication number
WO2021144902A1
WO2021144902A1 PCT/JP2020/001155 JP2020001155W WO2021144902A1 WO 2021144902 A1 WO2021144902 A1 WO 2021144902A1 JP 2020001155 W JP2020001155 W JP 2020001155W WO 2021144902 A1 WO2021144902 A1 WO 2021144902A1
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Prior art keywords
meter
identification information
watt
reading value
meter reading
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PCT/JP2020/001155
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French (fr)
Japanese (ja)
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小田根　昌弘
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三菱電機ビルテクノサービス株式会社
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Priority to CN202080092949.2A priority Critical patent/CN114945828B/en
Priority to PCT/JP2020/001155 priority patent/WO2021144902A1/en
Priority to JP2020542466A priority patent/JP6840905B1/en
Publication of WO2021144902A1 publication Critical patent/WO2021144902A1/en

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    • 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
    • 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
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/06—Energy or water supply

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  • the present invention relates to an energy consumption calculation device, a power consumption monitoring system and a program, particularly a calculation of energy consumption when a measuring meter such as a watt-hour meter is replaced.
  • the amount of power used by the electrical equipment associated with the watt-hour meter can be obtained from the meter reading value of the watt-hour meter installed in the facility, for example, the watt-hour meter. Since the meter reading value indicates the integrated value of the amount of power used since the watt hour meter is installed, the controller that acquires the meter reading value of the watt hour meter is the meter reading value at the beginning of the predetermined period and the meter reading value at the end of the predetermined period. The amount of power used by the electrical equipment in a predetermined period is obtained from the difference between.
  • the number of digits of the meter indicating the meter reading value is predetermined. For example, assuming that the number of digits is five, the meter of the weighing meter indicates the integrated amount of energy used as a value from "00000" to "99999". When the meter value (that is, the meter reading value) reaches "9999999", it returns to "00000". The weighing meter will continue to measure energy consumption thereafter. For example, when the meter reading value at the beginning of the predetermined period is "99990" and the meter reading value at the end of the predetermined period is "00015", the energy consumption in the predetermined period can be determined to be 25.
  • the measuring meter needs to be replaced with a new measuring meter due to the expiration date.
  • the meter reading of the new meter is usually "00000". If an operation check test is performed after installing a new meter, the meter reading value of the meter after replacement will indicate the amount of energy used during the test.
  • JP-A-2018-106645 Japanese Unexamined Patent Publication No. 2005-147766 International Publication 2013/118282 Jikkenhei 02-039175
  • An object of the present invention is to make it possible to correctly calculate the amount of energy used from the meter reading value of the measuring meter even when the measuring meter is replaced.
  • the energy consumption calculation device includes a meter reading value acquisition means for acquiring a meter reading value indicating an integrated value of the energy consumption of the facility's equipment measured by a measurement meter installed in the facility, and the measurement meter. It has an identification information acquisition means for acquiring the identification information of the above, and an energy consumption calculation means for calculating the energy consumption of the equipment by referring to the meter reading value acquired by the meter reading value acquisition means.
  • the calculation means detects the replacement of the measurement meter from the identification information acquired by the identification information acquisition means, the calculation means calculates the energy consumption separately before and after the replacement of the measurement meter, and adds up the calculated energy usage. By doing so, the energy consumption of the equipment is calculated.
  • the power consumption monitoring system includes a power meter having a communication function and a controller for controlling electrical equipment installed in the facility, and the controller is measured by the power meter.
  • the meter reading value acquisition means for acquiring the meter reading value indicating the integrated value of the power consumption of the electric equipment
  • the identification information acquisition means for acquiring the identification information of the power meter
  • the meter reading value acquired by the meter reading value acquisition means It has a power consumption calculation means for calculating the power consumption of the electric facility with reference to, and the power consumption calculation means replaces the power meter from the identification information acquired by the identification information acquisition means.
  • the amount of power used is calculated separately before and after the replacement of the power meter, and the amount of power used of the electric equipment is calculated by adding up the calculated amount of power used.
  • the meter reading value acquisition means is characterized in that the meter reading value is acquired from the watt hour meter via a power line.
  • the watt-hour meter holds the identification information of the watt-hour meter inside, and the identification information acquisition means receives the watt-hour meter from the watt-hour meter via a power line when the power of the watt-hour meter is turned on. It is characterized in that the identification information of the watt hour meter that is transmitted is acquired.
  • a computer is used to identify a meter reading value acquisition means for acquiring a meter reading value indicating an integrated value of energy consumption of the facility's equipment measured by a measuring meter installed in the facility.
  • the identification information acquisition means for acquiring information and the energy consumption calculation means for calculating the energy consumption of the equipment with reference to the meter reading value acquired by the meter reading value acquisition means are allowed to function.
  • the energy consumption is calculated separately before and after the replacement of the measuring meter, and the calculated energy consumption is added up to obtain the above. It is characterized by calculating the energy consumption of the equipment.
  • the amount of energy used can be correctly calculated from the meter reading value of the measuring meter even when the measuring meter is replaced.
  • a measuring meter for measuring the amount of energy used for electricity, gas, water, etc. a watt-hour meter for measuring the amount of power used for electrical equipment will be described as an example.
  • FIG. 1 is a schematic configuration diagram showing a power consumption monitoring system according to the present embodiment.
  • a watt-hour meter 1 for measuring the amount of power used in an electric facility installed in a facility a main circuit breaker 2 installed between an external power line and a watt-hour meter 1, and a load 3 are shown.
  • a branch breaker 4 installed between the controller 10 and the controller 10 is shown.
  • the main breaker 2 is provided in the switchboard.
  • the branch breaker 4 is provided in the distribution board.
  • the load 3 corresponds to the above-mentioned electric equipment that is operated by being supplied with electric power from the outside, and is, for example, an air-conditioning equipment, a lighting equipment, or the like.
  • the watt hour meter 1 in the present embodiment holds the identification information of the self-monitoring device inside.
  • the identification information is information unique to the self-assessment device, and may be, for example, a serial number. Further, the watt hour meter 1 has a communication function.
  • the watt hour meter 1 transmits data to the controller 10 via the power line 5.
  • the data to be transmitted is the identification information of the self-monitoring instrument and the meter reading value.
  • the meter reading value is a meter value indicated by the meter of the watt hour meter 1, and indicates an integrated value of the amount of power used.
  • the meter reading value is generally a value obtained by a meter reader reading the meter value indicated by the meter of the watt hour meter 1.
  • "meter value” and "meter reading value” are used synonymously.
  • the controller 10 in this embodiment is formed by a computer. That is, the controller 10 has a storage means such as a CPU, ROM, RAM, a hard disk drive (HDD), and a communication means such as a network interface (IF).
  • a storage means such as a CPU, ROM, RAM, a hard disk drive (HDD), and a communication means such as a network interface (IF).
  • IF network interface
  • the controller 10 is a control device that controls the operation of the load 3. Although the controller 10 is shown separately from the load 3 for convenience in FIG. 1, the controller 10 is one of the electrical equipments operated by being supplied with electric power from the outside like the load 3. One of the functions mounted on the controller 10 is a function of calculating the amount of power used. That is, the controller 10 in this embodiment is provided as an energy consumption calculation device.
  • FIG. 2 is a block configuration diagram showing the controller 10 in the present embodiment.
  • the controller 10 in the present embodiment includes a data receiving unit 11, a power consumption calculation unit 12, a control unit 13, and a data storage unit 14. The components not used in the description of the present embodiment are not shown.
  • the data receiving unit 11 receives the data sent from the watt hour meter 1 via the power line 5.
  • the data to be received is the identification information and the meter reading value of the watt hour meter 1 as described above. That is, the data receiving unit 11 in the present embodiment is provided as a meter reading value acquisition means and an identification information acquisition means.
  • the power consumption calculation unit 12 calculates the power consumption of the load 3 with reference to the meter reading value acquired by the data reception unit 11. Strictly speaking, as shown in FIG. 1, the amount of power used measured by the watt-hour meter 1 includes the amount of power used by the controller 10, but here, it will be described as not including it.
  • the control unit 13 performs general control in the controller 10.
  • FIG. 3 is a diagram showing a configuration example of data stored in the data storage unit 14 in the present embodiment.
  • the data storage unit 14 stores the data received by the data reception unit 11 in association with the reception date and time.
  • the data receiving unit 11 receives the identification information or the meter reading value of the watt hour meter 1. Therefore, as illustrated in FIG. 3, the identification information (ID) or the meter reading value corresponds to the data reception date and time. Attached and memorized.
  • the watt hour meter 1 may transmit the meter reading value with identification information added.
  • the data storage unit 14 stores both the identification information and the meter reading value in association with the reception date and time. NS.
  • “(replacement of watt-hour meter)” indicates the timing at which the watt-hour meter 1 is replaced, and is not registered as data in the data storage unit 14.
  • the components 11 to 13 in the controller 10 are realized by the cooperative operation of the computer forming the controller 10 and the program running on the CPU mounted on the computer. Further, the data storage unit 14 is realized by the storage means mounted on the controller 10. Alternatively, RAM or an external storage means may be used via the network.
  • the program used in the present embodiment can be provided not only by communication means but also by storing it in a computer-readable recording medium such as a USB memory.
  • the programs provided by the communication means and the recording medium are installed in the computer, and various processes are realized by sequentially executing the programs by the CPU of the computer.
  • the watt hour meter 1 automatically transmits the identification information of its own instrument held inside to the controller 10 via the power line 5 (step 11-1).
  • the controller 10 receives the identification information transmitted from the watt-hour meter 1, the controller 10 adds the reception date and time to the received identification information and stores it in the data storage unit 14 (step 12-1). As shown in FIG. 3, the record 31 is registered in the data storage unit 14 by this sequence. Then, the controller 10 returns a notification that the identification information has been saved to the watt-hour meter 1 of the identification information transmission source via the power line 5 (step 13-1).
  • the watt hour meter 1 Upon receiving the above notification from the controller 10, the watt hour meter 1 periodically transmits the meter value indicated by the self-monitoring device, that is, the meter reading value, to the controller 10 via the power line 5 (step 14-1).
  • the watt hour meter 1 transmits a meter reading value every 30 minutes, for example.
  • the controller 10 When the controller 10 receives the meter reading value transmitted from the watt hour meter 1, the controller 10 adds the reception date and time to the received meter reading value and stores it in the data storage unit 14 (step 15-1).
  • step 14-1, 15-1 The above-mentioned transfer of meter reading values (steps 14-1, 15-1) is repeated until the watt hour meter 1 is removed from the facility. As shown in FIG. 3, the record group 32 is registered in the data storage unit 14 by this sequence.
  • the existing electricity meter 1 has been replaced due to the expiration date and the like. That is, the existing old watt-hour meter 1 is removed and a new watt-hour meter 1 is installed. Then, when the power is turned on, the new watt hour meter 1 automatically transmits the identification information of the self-monitoring device held inside to the controller 10 via the power line 5 (step 11-2). Since the communication sequence (steps 12-2 to 15-2) following this is the same as the sequence (steps 12-1 to 15-1) described in the case of the existing old watt-hour meter 1, the description thereof will be omitted. As shown in FIG. 3, the record 33 is registered in the data storage unit 14 by the sequence (steps 11-2 to 12-2), and the record group 34 is registered by the sequence (steps 14-2 to 15-2). NS.
  • the controller 10 is started before data is sent from the watt hour meter 1, and an initialization process is performed at the time of startup (step 111). As the initialization process, the exchange flag is cleared.
  • the exchange flag is flag information indicating whether or not the watt hour meter 1 is exchanged. When the exchange flag is cleared, it means that the watt hour meter 1 has not been exchanged.
  • the data receiving unit 11 When the data receiving unit 11 receives the data transmitted from the watt-hour meter 1 (step 112), if the data is identification information (Y in step 113), the data receiving unit 11 receives the received identification at the reception date and time. The information is associated and stored in the data storage unit 14 (step 114). Subsequently, the controller 10 notifies the watt-hour meter 1 that the identification information has been saved (step 115). Then, the control unit 13 sets the exchange flag (step 116).
  • the data receiving unit 11 associates the received meter reading value with the reception date and time and saves it in the data storage unit 14 (step 117).
  • the controller 10 determines that the watt-hour meter 1 has been replaced by receiving the identification information automatically transmitted when the power is turned on to the watt-hour meter 1. However, it is conceivable that the controller 10 receives the identification information even if the watt-hour meter 1 is not replaced because the power is turned on again in response to the occurrence of some kind of failure or the like. In this case, the received identification information is compared with the latest identification information stored in the data storage unit 14, and if they match, it is determined that the watt-hour meter 1 has not been exchanged, and the exchange flag is not set. It may be processed as follows.
  • the power consumption calculation unit 12 refers to the meter reading value stored in the data storage unit 14. Calculate the amount of power used. The amount of power used is generally calculated at the time of billing, for example, monthly.
  • the power consumption calculation process in the present embodiment will be described with reference to the flowchart shown in FIG.
  • the power consumption calculation unit 12 refers to the replacement flag when it is started.
  • the exchange flag is not set (N in step 121)
  • the power consumption calculation unit 12 carries out a normal power consumption calculation process as in the conventional case (step 124). That is, the power consumption calculation unit 12 obtains the power consumption in the predetermined period by the difference between the meter reading value at the beginning of the predetermined period (for example, one month) and the meter reading value at the end of the predetermined period.
  • the power consumption calculation unit 12 executes the characteristic power consumption calculation process at the time of exchange detection in this embodiment (step 122). This process will be described with a specific example.
  • FIG. 7 is a graph showing the meter reading values stored in the data storage unit 14 in a graph format.
  • the horizontal axis is the time and the vertical axis is the meter reading value.
  • the graph shown in FIG. 7 is data corresponding to the meter reading value shown in FIG. 3, and T1 is the start of the predetermined period and T4 is the end of the predetermined period.
  • the meter reading value at T1 is 100, and the meter reading value at T4 is 120.
  • the meter reading value at the time (T2) when the existing watt hour meter 1 is removed is 150.
  • the meter reading value at the time (T3) when the new watt hour meter 1 is installed, the operation check is completed, and the measurement of the power consumption is started is 10.
  • the value that can be indicated by the meter of the watt hour meter 1 is a value from “000” to “200”. Further, since meter reading values other than those at each time point T1 to T4 are not necessary for calculating the amount of power used in a predetermined period, the graph is shown as a straight line for convenience in FIG.
  • the power consumption is calculated separately before and after the replacement of the watt-hour meter 1. That is, the difference 50, that is, the power used based on the measurement with the existing old watt hour meter 1 by subtracting the meter reading value 100 at the beginning of the predetermined period (T1) from the meter reading value 150 immediately before the replacement of the watt hour meter 1 (T2). The quantity 50 [kWh] is calculated.
  • the difference 110 between the meter reading value 10 immediately after the replacement of the watt hour meter 1 (T3) and the meter reading value 120 at the end of the predetermined period (T4), that is, the power consumption 110 based on the measurement with the new watt hour meter 1 [ kWh] is calculated.
  • the fact that the watt-hour meter 1 has been replaced is taken into consideration, and the amount of power used is calculated separately before and after the replacement of the watt-hour meter 1.
  • the amount of power used is calculated separately before and after the replacement of the watt-hour meter 1.
  • FIG. 8 is a diagram showing another example of the configuration of data stored in the data storage unit 14 in the present embodiment.
  • the data structure itself may be the same as the data shown in FIG.
  • FIG. 9 is a graph showing the meter reading values shown in FIG. 8 in a graph format.
  • T5 is the start of the predetermined period and T9 is the end of the predetermined period.
  • the meter reading value at T5 is 170, and the meter reading value at T9 is 100.
  • the meter reading value at the time (T7) when the existing watt hour meter 1 is removed is 10.
  • the meter reading value is 30 at the time (T8) when the new watt hour meter 1 is installed, the operation check is completed, and the measurement of the power consumption is started.
  • the value that can be indicated by the meter of the watt hour meter 1 as described above is a value from “000” to “200”. Further, since meter reading values other than those at each time point T5 to T9 are not necessary for calculating the amount of power used, the graph is shown as a straight line for convenience in FIG.
  • the power consumption is calculated separately before and after the replacement of the watt-hour meter 1.
  • the meter reading value returns to 0 when it reaches the maximum value of 200 at the time point T6 from 170 at the beginning of the predetermined period (T5), and then the replacement of the watt-hour meter 1
  • the difference 70 between the meter reading value 30 immediately after the replacement of the watt hour meter 1 (T8) and the meter reading value 100 at the end of the predetermined period (T9), that is, the power consumption 70 based on the measurement with the new watt hour meter 1 [ kWh] is calculated.
  • control unit 13 clears the replacement flag (step 123).
  • the charge is made on the assumption of January as a predetermined period, but the power consumption calculation process at the time of exchange detection in the present embodiment can be applied to any period.
  • a smart meter is assumed as the watt-hour meter 1, and the data receiving unit 11 in the controller 10 acquires the identification information and the meter reading value of the watt-hour meter 1 from the watt-hour meter 1 via the power line 5. I tried to do it, but it doesn't have to be limited to this.
  • the data receiving unit 11 may acquire data via another computer, or may acquire input data by a meter reader.
  • the watt-hour meter has been described as an example as a measuring meter for measuring the amount of energy used.
  • the measuring meter is gas, etc. It can also be applied to a meter that measures the amount of energy used in.
  • 1 Electric energy meter 1 Electric energy meter, 2 Main breaker, 3 Load, 4 Branch breaker, 5 Power line, 10 Controller, 11 Data receiving unit, 12 Electric energy calculation unit, 13 Control unit, 14 Data storage unit.

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Abstract

The present invention makes it possible to accurately calculate energy use amount on the basis of the read meter value of a measuring meter even when the measuring meter is exchanged. A controller (10) has: a data-receiving unit (11) which receives the identification information of a power meter (1) which is transmitted therefrom when a power supply is supplied thereto, and the read meter value which is periodically transmitted therefrom at fixed intervals, and upon receiving the same, adds the time and date of receipt thereto and stores the same in a data storage unit (14); and a used power amount calculation unit (12) which, when calculating the used power amount of a load during a prescribed period, calculates the used power amount upon detecting the occurrence of a power meter (1) exchange during the prescribed period by splitting the used power amount into pre- and post-exchange values, and calculates the used power amount of the load by adding the pre- and post-exchange used power amounts together.

Description

エネルギー使用量算出装置、使用電力量監視システム及びプログラムEnergy consumption calculation device, power consumption monitoring system and program
　本発明は、エネルギー使用量算出装置、使用電力量監視システム及びプログラム、特に電力量計等の計量メーターが交換されたときのエネルギー使用量の算出に関する。 The present invention relates to an energy consumption calculation device, a power consumption monitoring system and a program, particularly a calculation of energy consumption when a measuring meter such as a watt-hour meter is replaced.
　施設に設置されている計量メーター、例えば電力量計の検針値によりその電力量計に紐付けられた電気設備の使用電力量を得ることができる。検針値は、電力量計が設置されてからの使用電力量の積算値を示すので、電力量計の検針値を取得するコントローラは、所定期間の始期の検針値と所定期間の終期の検針値との差分により所定期間における電気設備の使用電力量を得る。 The amount of power used by the electrical equipment associated with the watt-hour meter can be obtained from the meter reading value of the watt-hour meter installed in the facility, for example, the watt-hour meter. Since the meter reading value indicates the integrated value of the amount of power used since the watt hour meter is installed, the controller that acquires the meter reading value of the watt hour meter is the meter reading value at the beginning of the predetermined period and the meter reading value at the end of the predetermined period. The amount of power used by the electrical equipment in a predetermined period is obtained from the difference between.
　ところで、電気、ガス等のエネルギーの使用量を計測する計量メーターにおいて検針値を表すメーターの桁数は、予め決められている。例えば、桁数が５桁だとすると、計量メーターのメーターは、エネルギーの使用積算量を“０００００”から“９９９９９”までの値で示す。メーター値（つまり、検針値）は、“９９９９９”まで達すると“０００００”に戻る。計量メーターは、その後もエネルギー使用量の計測を続ける。例えば、所定期間の始期の検針値が“９９９９０”、所定期間の終期の検針値が“０００１５”の場合、所定期間におけるエネルギー使用量は、２５と求めることができる。 By the way, in the measuring meter that measures the amount of energy used such as electricity and gas, the number of digits of the meter indicating the meter reading value is predetermined. For example, assuming that the number of digits is five, the meter of the weighing meter indicates the integrated amount of energy used as a value from "00000" to "99999". When the meter value (that is, the meter reading value) reaches "9999999", it returns to "00000". The weighing meter will continue to measure energy consumption thereafter. For example, when the meter reading value at the beginning of the predetermined period is "99990" and the meter reading value at the end of the predetermined period is "00015", the energy consumption in the predetermined period can be determined to be 25.
　ところで、計量メーターは、有効期限などの関係から新しい計量メーターへの交換が必要となる。新しい計量メーターの検針値は、通常“０００００”である。新しい計量メーターの設置後に動作確認テストを実施した場合、交換後の計量メーターの検針値は、そのテスト時に使用した分のエネルギー使用量を示すことになる。 By the way, the measuring meter needs to be replaced with a new measuring meter due to the expiration date. The meter reading of the new meter is usually "00000". If an operation check test is performed after installing a new meter, the meter reading value of the meter after replacement will indicate the amount of energy used during the test.
特開２０１８－１０６６４５号公報JP-A-2018-106645 特開２００５－１４７７６６号公報Japanese Unexamined Patent Publication No. 2005-147766 国際公開２０１３／１１８２８２号International Publication 2013/118282 実開平０２－０３９１７５号公報Jikkenhei 02-039175
　しかしながら、計量メーターが交換されたことを認識できないと、エネルギー使用量を正しく算出できない可能性が生じてくる。例えば、施設から撤去される古い計量メーターの検針値が“９９９９０”であって、新しい計量メーターで計測を開始するときの検針値が“０００１５”の場合、設備の利用者は、エネルギーを全く使用していなくても検針値の差分から得られる２５に相当するエネルギーを使用したと誤認されてしまう。 However, if it is not possible to recognize that the meter has been replaced, there is a possibility that the amount of energy used cannot be calculated correctly. For example, if the meter reading of the old meter removed from the facility is "999990" and the meter reading when starting measurement with the new meter is "00015", the equipment user uses no energy at all. Even if it is not done, it is mistaken that the energy corresponding to 25 obtained from the difference in the meter reading values is used.
　本発明は、計量メーターが交換されたときでも計量メーターの検針値からエネルギーの使用量を正しく算出できるようにすることを目的とする。 An object of the present invention is to make it possible to correctly calculate the amount of energy used from the meter reading value of the measuring meter even when the measuring meter is replaced.
　本発明に係るエネルギー使用量算出装置は、施設に設置されている計量メーターにより計測された前記施設の設備のエネルギー使用量の積算値を示す検針値を取得する検針値取得手段と、前記計量メーターの識別情報を取得する識別情報取得手段と、前記検針値取得手段が取得した検針値を参照して前記設備のエネルギー使用量を算出するエネルギー使用量算出手段と、を有し、前記エネルギー使用量算出手段は、前記識別情報取得手段が取得した識別情報から前記計量メーターの交換を検出した場合、前記計量メーターの交換の前と後に分けてエネルギー使用量を算出し、算出したエネルギー使用量を合算することで前記設備のエネルギー使用量を算出することを特徴とする。 The energy consumption calculation device according to the present invention includes a meter reading value acquisition means for acquiring a meter reading value indicating an integrated value of the energy consumption of the facility's equipment measured by a measurement meter installed in the facility, and the measurement meter. It has an identification information acquisition means for acquiring the identification information of the above, and an energy consumption calculation means for calculating the energy consumption of the equipment by referring to the meter reading value acquired by the meter reading value acquisition means. When the calculation means detects the replacement of the measurement meter from the identification information acquired by the identification information acquisition means, the calculation means calculates the energy consumption separately before and after the replacement of the measurement meter, and adds up the calculated energy usage. By doing so, the energy consumption of the equipment is calculated.
　本発明に係る使用電力量監視システムは、通信機能を有する電力量計と、施設に設置されている電気設備の制御を行うコントローラと、を有し、前記コントローラは、前記電力量計により計測された前記電気設備の使用電力量の積算値を示す検針値を取得する検針値取得手段と、前記電力量計の識別情報を取得する識別情報取得手段と、前記検針値取得手段が取得した検針値を参照して前記電気設備の使用電力量を算出する使用電力量算出手段と、を有し、前記使用電力量算出手段は、前記識別情報取得手段が取得した識別情報から前記電力量計の交換を検出した場合、前記電力量計の交換の前と後に分けて使用電力量を算出し、算出した使用電力量を合算することで前記電気設備の使用電力量を算出することを特徴とする。 The power consumption monitoring system according to the present invention includes a power meter having a communication function and a controller for controlling electrical equipment installed in the facility, and the controller is measured by the power meter. The meter reading value acquisition means for acquiring the meter reading value indicating the integrated value of the power consumption of the electric equipment, the identification information acquisition means for acquiring the identification information of the power meter, and the meter reading value acquired by the meter reading value acquisition means. It has a power consumption calculation means for calculating the power consumption of the electric facility with reference to, and the power consumption calculation means replaces the power meter from the identification information acquired by the identification information acquisition means. When is detected, the amount of power used is calculated separately before and after the replacement of the power meter, and the amount of power used of the electric equipment is calculated by adding up the calculated amount of power used.
　また、前記検針値取得手段は、前記電力量計から電力線を介して検針値を取得することを特徴とする。 Further, the meter reading value acquisition means is characterized in that the meter reading value is acquired from the watt hour meter via a power line.
　また、前記電力量計は、当該電力量計の識別情報を内部に保持しており、前記識別情報取得手段は、前記電力量計の電源が投入された時に当該電力量計から電力線を介して送信されてくる当該電力量計の識別情報を取得することを特徴とする。 Further, the watt-hour meter holds the identification information of the watt-hour meter inside, and the identification information acquisition means receives the watt-hour meter from the watt-hour meter via a power line when the power of the watt-hour meter is turned on. It is characterized in that the identification information of the watt hour meter that is transmitted is acquired.
　本発明に係るプログラムは、コンピュータを、施設に設置されている計量メーターにより計測された前記施設の設備のエネルギー使用量の積算値を示す検針値を取得する検針値取得手段、前記計量メーターの識別情報を取得する識別情報取得手段、前記検針値取得手段が取得した検針値を参照して前記設備のエネルギー使用量を算出するエネルギー使用量算出手段、として機能させ、前記エネルギー使用量算出手段は、前記識別情報取得手段が取得した識別情報から前記計量メーターの交換を検出した場合、前記計量メーターの交換の前と後に分けてエネルギー使用量を算出し、算出したエネルギー使用量を合算することで前記設備のエネルギー使用量を算出することを特徴とする。 In the program according to the present invention, a computer is used to identify a meter reading value acquisition means for acquiring a meter reading value indicating an integrated value of energy consumption of the facility's equipment measured by a measuring meter installed in the facility. The identification information acquisition means for acquiring information and the energy consumption calculation means for calculating the energy consumption of the equipment with reference to the meter reading value acquired by the meter reading value acquisition means are allowed to function. When the replacement of the measuring meter is detected from the identification information acquired by the identification information acquisition means, the energy consumption is calculated separately before and after the replacement of the measuring meter, and the calculated energy consumption is added up to obtain the above. It is characterized by calculating the energy consumption of the equipment.
　本発明によれば、計量メーターが交換されたときでも計量メーターの検針値からエネルギーの使用量を正しく算出することができる。 According to the present invention, the amount of energy used can be correctly calculated from the meter reading value of the measuring meter even when the measuring meter is replaced.
本実施の形態における使用電力量監視システムを示す概略構成図である。It is a schematic block diagram which shows the electric energy consumption monitoring system in this embodiment. 本実施の形態におけるコントローラを示すブロック構成図である。It is a block block diagram which shows the controller in this embodiment. 本実施の形態におけるデータ記憶部に記憶されるデータの構成例を示す図である。It is a figure which shows the structural example of the data stored in the data storage part in this embodiment. 本実施の形態において電力量計とコントローラとの間で実施されるデータ通信を示すシーケンス図である。It is a sequence diagram which shows the data communication which is carried out between a watt hour meter and a controller in this embodiment. 本実施の形態において電力量計からデータが送られてきたときにコントローラが実施する処理を示すフローチャートである。It is a flowchart which shows the process which a controller performs when the data is sent from the watt-hour meter in this embodiment. 本実施の形態における使用電力量算出処理を示すフローチャートである。It is a flowchart which shows the electric energy use calculation process in this embodiment. 図３に示す検針値をグラフ形式にて示す図である。It is a figure which shows the meter reading value shown in FIG. 3 in a graph format. 本実施の形態におけるデータ記憶部に記憶されるデータの構成の他の例を示す図である。It is a figure which shows another example of the structure of the data stored in the data storage part in this embodiment. 図８に示す検針値をグラフ形式にて示す図である。It is a figure which shows the meter reading value shown in FIG. 8 in a graph format.
　以下、図面に基づいて、本発明の好適な実施の形態について説明する。本実施の形態では、電気、ガス、水道等のエネルギーの使用量を計測する計量メーターとして、電気設備の使用電力量を計測する電力量計を例にして説明する。 Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the present embodiment, as a measuring meter for measuring the amount of energy used for electricity, gas, water, etc., a watt-hour meter for measuring the amount of power used for electrical equipment will be described as an example.
　図１は、本実施の形態における使用電力量監視システムを示す概略構成図である。図１には、施設に設置されている電気設備における使用電力量を計測する電力量計１と、外部からの電力線と電力量計１との間に設置される主幹ブレーカー２と、負荷３とコントローラ１０との間に設置される分岐ブレーカー４と、が示されている。主幹ブレーカー２は、配電盤内に設けられる。分岐ブレーカー４は、分電盤内に設けられる。負荷３は、外部からの電力が供給されて動作する上記電気設備に相当し、例えば、空調設備、照明設備等である。 FIG. 1 is a schematic configuration diagram showing a power consumption monitoring system according to the present embodiment. In FIG. 1, a watt-hour meter 1 for measuring the amount of power used in an electric facility installed in a facility, a main circuit breaker 2 installed between an external power line and a watt-hour meter 1, and a load 3 are shown. A branch breaker 4 installed between the controller 10 and the controller 10 is shown. The main breaker 2 is provided in the switchboard. The branch breaker 4 is provided in the distribution board. The load 3 corresponds to the above-mentioned electric equipment that is operated by being supplied with electric power from the outside, and is, for example, an air-conditioning equipment, a lighting equipment, or the like.
　本実施の形態における電力量計１は、自計器の識別情報を内部に保持している。識別情報は、自計器固有の情報であり、例えば製造番号でもよい。また、電力量計１は、通信機能を有している。電力量計１は、電力線５を介してコントローラ１０へデータを送信する。送信するデータは、自計器の識別情報及び検針値である。検針値は、電力量計１のメーターが示すメーター値であり、使用電力量の積算値を示す。検針値は、一般的には検針員が電力量計１のメーターが示すメーター値を読み取ることで得られる値である。本実施の形態では、電力量計１がスマートメーターである場合を想定しているので、検針員が検針を行う必要はない。本実施の形態では、「メーター値」と「検針値」を同義で用いる。 The watt hour meter 1 in the present embodiment holds the identification information of the self-monitoring device inside. The identification information is information unique to the self-assessment device, and may be, for example, a serial number. Further, the watt hour meter 1 has a communication function. The watt hour meter 1 transmits data to the controller 10 via the power line 5. The data to be transmitted is the identification information of the self-monitoring instrument and the meter reading value. The meter reading value is a meter value indicated by the meter of the watt hour meter 1, and indicates an integrated value of the amount of power used. The meter reading value is generally a value obtained by a meter reader reading the meter value indicated by the meter of the watt hour meter 1. In the present embodiment, since it is assumed that the watt hour meter 1 is a smart meter, it is not necessary for the meter reader to read the meter. In this embodiment, "meter value" and "meter reading value" are used synonymously.
　本実施の形態におけるコントローラ１０は、コンピュータにより形成される。すなわち、コントローラ１０は、ＣＰＵ、ＲＯＭ、ＲＡＭ、ハードディスクドライブ（ＨＤＤ）等の記憶手段、ネットワークインタフェース（ＩＦ）等の通信手段を有する。 The controller 10 in this embodiment is formed by a computer. That is, the controller 10 has a storage means such as a CPU, ROM, RAM, a hard disk drive (HDD), and a communication means such as a network interface (IF).
　コントローラ１０は、負荷３の動作を制御する制御装置である。図１では、便宜的に負荷３と分けて図示しているが、コントローラ１０は、負荷３と同様に外部からの電力が供給されて動作する電気設備の１つである。コントローラ１０に搭載される機能の１つに、使用電力量の算出機能がある。すなわち、本実施の形態におけるコントローラ１０は、エネルギー使用量算出装置として設けられている。 The controller 10 is a control device that controls the operation of the load 3. Although the controller 10 is shown separately from the load 3 for convenience in FIG. 1, the controller 10 is one of the electrical equipments operated by being supplied with electric power from the outside like the load 3. One of the functions mounted on the controller 10 is a function of calculating the amount of power used. That is, the controller 10 in this embodiment is provided as an energy consumption calculation device.
　図２は、本実施の形態におけるコントローラ１０を示すブロック構成図である。本実施の形態におけるコントローラ１０は、データ受信部１１、使用電力量算出部１２、制御部１３及びデータ記憶部１４を有している。なお、本実施の形態の説明に用いない構成要素については、図示していない。 FIG. 2 is a block configuration diagram showing the controller 10 in the present embodiment. The controller 10 in the present embodiment includes a data receiving unit 11, a power consumption calculation unit 12, a control unit 13, and a data storage unit 14. The components not used in the description of the present embodiment are not shown.
　データ受信部１１は、電力線５を介して電力量計１から送られてくるデータを受信する。受信するデータは、前述したように電力量計１の識別情報及び検針値である。すなわち、本実施の形態におけるデータ受信部１１は、検針値取得手段及び識別情報取得手段として設けられている。使用電力量算出部１２は、データ受信部１１が取得した検針値を参照して負荷３の使用電力量を算出する。図１に示すように、厳密には、電力量計１が計測する使用電力量には、コントローラ１０における使用電力量も含まれるが、ここでは、含まれないものとして説明する。制御部１３は、コントローラ１０における制御全般を行う。 The data receiving unit 11 receives the data sent from the watt hour meter 1 via the power line 5. The data to be received is the identification information and the meter reading value of the watt hour meter 1 as described above. That is, the data receiving unit 11 in the present embodiment is provided as a meter reading value acquisition means and an identification information acquisition means. The power consumption calculation unit 12 calculates the power consumption of the load 3 with reference to the meter reading value acquired by the data reception unit 11. Strictly speaking, as shown in FIG. 1, the amount of power used measured by the watt-hour meter 1 includes the amount of power used by the controller 10, but here, it will be described as not including it. The control unit 13 performs general control in the controller 10.
　図３は、本実施の形態におけるデータ記憶部１４に記憶されるデータの構成例を示す図である。データ記憶部１４には、データ受信部１１が受信したデータに、受信日時が対応付けされ記憶される。前述したように、データ受信部１１は、電力量計１の識別情報又は検針値を受信するので、図３に例示するように、データの受信日時には、識別情報（ＩＤ）又は検針値が対応付けして記憶される。なお、電力量計１は、検針値に識別情報を付加して送信してもよく、この場合、データ記憶部１４には、受信日時に識別情報及び検針値の双方が対応付けして記憶される。また、図３において、「（電力量計の交換）」は、電力量計１が交換されたタイミングを示すものであってデータとしてデータ記憶部１４に登録されない。 FIG. 3 is a diagram showing a configuration example of data stored in the data storage unit 14 in the present embodiment. The data storage unit 14 stores the data received by the data reception unit 11 in association with the reception date and time. As described above, the data receiving unit 11 receives the identification information or the meter reading value of the watt hour meter 1. Therefore, as illustrated in FIG. 3, the identification information (ID) or the meter reading value corresponds to the data reception date and time. Attached and memorized. The watt hour meter 1 may transmit the meter reading value with identification information added. In this case, the data storage unit 14 stores both the identification information and the meter reading value in association with the reception date and time. NS. Further, in FIG. 3, “(replacement of watt-hour meter)” indicates the timing at which the watt-hour meter 1 is replaced, and is not registered as data in the data storage unit 14.
　コントローラ１０における構成要素１１～１３は、コントローラ１０を形成するコンピュータと、コンピュータに搭載されたＣＰＵで動作するプログラムとの協調動作により実現される。また、データ記憶部１４は、コントローラ１０に搭載された記憶手段にて実現される。あるいは、ＲＡＭ又は外部にある記憶手段をネットワーク経由で利用してもよい。 The components 11 to 13 in the controller 10 are realized by the cooperative operation of the computer forming the controller 10 and the program running on the CPU mounted on the computer. Further, the data storage unit 14 is realized by the storage means mounted on the controller 10. Alternatively, RAM or an external storage means may be used via the network.
　また、本実施の形態で用いるプログラムは、通信手段により提供することはもちろん、ＵＳＢメモリ等のコンピュータ読み取り可能な記録媒体に格納して提供することも可能である。通信手段や記録媒体から提供されたプログラムはコンピュータにインストールされ、コンピュータのＣＰＵがプログラムを順次実行することで各種処理が実現される。 Further, the program used in the present embodiment can be provided not only by communication means but also by storing it in a computer-readable recording medium such as a USB memory. The programs provided by the communication means and the recording medium are installed in the computer, and various processes are realized by sequentially executing the programs by the CPU of the computer.
　次に、本実施の形態における動作について説明する。 Next, the operation in this embodiment will be described.
　まず、システムの運用時には、電力量計１とコントローラ１０との間でデータ通信が行われる。このデータ通信について図４に示すシーケンス図を用いて説明する。 First, during system operation, data communication is performed between the watt hour meter 1 and the controller 10. This data communication will be described with reference to the sequence diagram shown in FIG.
　まず、電力量計１は、電源が投入されると、内部に保持している自計器の識別情報を、電力線５を介してコントローラ１０へ自動的に送信する（ステップ１１－１）。コントローラ１０は、電力量計１から送信されてきた識別情報を受信すると、受信した識別情報に受信日時を付加してデータ記憶部１４に保存する（ステップ１２－１）。図３に示すように、データ記憶部１４には、このシーケンスによりレコード３１が登録される。そして、コントローラ１０は、識別情報を保存した旨の通知を、電力線５を介して識別情報送信元の電力量計１へ返信する（ステップ１３－１）。 First, when the power is turned on, the watt hour meter 1 automatically transmits the identification information of its own instrument held inside to the controller 10 via the power line 5 (step 11-1). When the controller 10 receives the identification information transmitted from the watt-hour meter 1, the controller 10 adds the reception date and time to the received identification information and stores it in the data storage unit 14 (step 12-1). As shown in FIG. 3, the record 31 is registered in the data storage unit 14 by this sequence. Then, the controller 10 returns a notification that the identification information has been saved to the watt-hour meter 1 of the identification information transmission source via the power line 5 (step 13-1).
　コントローラ１０から上記通知を受けると、電力量計１は、自計器が示すメーター値、すなわち検針値を、電力線５を介してコントローラ１０へ定周期的に送信する（ステップ１４－１）。電力量計１は、例えば３０分毎に検針値を送信する。 Upon receiving the above notification from the controller 10, the watt hour meter 1 periodically transmits the meter value indicated by the self-monitoring device, that is, the meter reading value, to the controller 10 via the power line 5 (step 14-1). The watt hour meter 1 transmits a meter reading value every 30 minutes, for example.
　コントローラ１０は、電力量計１から送信されてきた検針値を受信すると、受信した検針値に受信日時を付加してデータ記憶部１４に保存する（ステップ１５－１）。 When the controller 10 receives the meter reading value transmitted from the watt hour meter 1, the controller 10 adds the reception date and time to the received meter reading value and stores it in the data storage unit 14 (step 15-1).
　前述した検針値の授受（ステップ１４－１，１５－１）は、電力量計１が施設から撤去されるまで繰り返し実施される。図３に示すように、データ記憶部１４には、このシーケンスによりレコード群３２が登録される。 The above-mentioned transfer of meter reading values (steps 14-1, 15-1) is repeated until the watt hour meter 1 is removed from the facility. As shown in FIG. 3, the record group 32 is registered in the data storage unit 14 by this sequence.
　ここで、既設の電力量計１が有効期限などの関係から交換されたとする。つまり、既設の古い電力量計１が撤去され、新しい電力量計１が設置されることになる。そして、新しい電力量計１は、電源が投入されると、内部に保持している自計器の識別情報を、電力線５を介してコントローラ１０へ自動的に送信する（ステップ１１－２）。これに続く通信シーケンス（ステップ１２－２～１５－２）は、既設の古い電力量計１の場合に説明したシーケンス（ステップ１２－１～１５－１）と同じなので、説明を省略する。図３に示すように、データ記憶部１４には、シーケンス（ステップ１１－２～１２－２）によりレコード３３が登録され、シーケンス（ステップ１４－２～１５－２）によりレコード群３４が登録される。 Here, it is assumed that the existing electricity meter 1 has been replaced due to the expiration date and the like. That is, the existing old watt-hour meter 1 is removed and a new watt-hour meter 1 is installed. Then, when the power is turned on, the new watt hour meter 1 automatically transmits the identification information of the self-monitoring device held inside to the controller 10 via the power line 5 (step 11-2). Since the communication sequence (steps 12-2 to 15-2) following this is the same as the sequence (steps 12-1 to 15-1) described in the case of the existing old watt-hour meter 1, the description thereof will be omitted. As shown in FIG. 3, the record 33 is registered in the data storage unit 14 by the sequence (steps 11-2 to 12-2), and the record group 34 is registered by the sequence (steps 14-2 to 15-2). NS.
　次に、コントローラ１０において電力量計１からデータが送られてきたときに実施する処理の詳細について図５に示すフローチャートを用いて説明する。 Next, the details of the processing to be executed when the data is sent from the watt-hour meter 1 in the controller 10 will be described with reference to the flowchart shown in FIG.
　コントローラ１０は、電力量計１からデータが送られてくる前に起動され、起動時には初期化処理を実施する（ステップ１１１）。初期化処理としては、交換フラグをクリアすることを行う。交換フラグは、電力量計１の交換の有無を示すフラグ情報である。交換フラグがクリアの場合は、電力量計１が交換されていないことを意味する。 The controller 10 is started before data is sent from the watt hour meter 1, and an initialization process is performed at the time of startup (step 111). As the initialization process, the exchange flag is cleared. The exchange flag is flag information indicating whether or not the watt hour meter 1 is exchanged. When the exchange flag is cleared, it means that the watt hour meter 1 has not been exchanged.
　データ受信部１１が電力量計１から送信されてきたデータを受信すると（ステップ１１２）、そのデータが識別情報の場合（ステップ１１３でＹ）、データ受信部１１は、受信日時に、受信した識別情報を対応付けてデータ記憶部１４に保存する（ステップ１１４）。続いて、コントローラ１０は、識別情報を保存した旨を電力量計１に通知する（ステップ１１５）。そして、制御部１３は、交換フラグをセットする（ステップ１１６）。 When the data receiving unit 11 receives the data transmitted from the watt-hour meter 1 (step 112), if the data is identification information (Y in step 113), the data receiving unit 11 receives the received identification at the reception date and time. The information is associated and stored in the data storage unit 14 (step 114). Subsequently, the controller 10 notifies the watt-hour meter 1 that the identification information has been saved (step 115). Then, the control unit 13 sets the exchange flag (step 116).
　一方、受信したデータが検針値の場合（ステップ１１３でＮ）、データ受信部１１は、受信日時に、受信した検針値を対応付けてデータ記憶部１４に保存する（ステップ１１７）。 On the other hand, when the received data is a meter reading value (N in step 113), the data receiving unit 11 associates the received meter reading value with the reception date and time and saves it in the data storage unit 14 (step 117).
　コントローラ１０は、電力量計１に電源が投入されることで自動送信される識別情報を受信することによって、電力量計１が交換されたと判断している。ただ、何らかの障害等の発生に応じて電力量計１に電源が再投入されることで、電力量計１が交換されなくてもコントローラ１０が識別情報を受信する場合も考えられる。この場合、受信した識別情報とデータ記憶部１４に記憶されている最新の識別情報とを比較し、一致していれば、電力量計１は交換されていないと判断し、交換フラグをセットしないように処理してもよい。 The controller 10 determines that the watt-hour meter 1 has been replaced by receiving the identification information automatically transmitted when the power is turned on to the watt-hour meter 1. However, it is conceivable that the controller 10 receives the identification information even if the watt-hour meter 1 is not replaced because the power is turned on again in response to the occurrence of some kind of failure or the like. In this case, the received identification information is compared with the latest identification information stored in the data storage unit 14, and if they match, it is determined that the watt-hour meter 1 has not been exchanged, and the exchange flag is not set. It may be processed as follows.
　以上のようにして、電力量計１から送信されてきた検針値がデータ記憶部１４に保存されると、使用電力量算出部１２は、データ記憶部１４に保存されている検針値を参照して使用電力量を算出する。使用電力量は、一般に課金の際、例えば１月毎に算出される。以下、本実施の形態における使用電力量算出処理について図６に示すフローチャートを用いて説明する。 As described above, when the meter reading value transmitted from the watt-hour meter 1 is stored in the data storage unit 14, the power consumption calculation unit 12 refers to the meter reading value stored in the data storage unit 14. Calculate the amount of power used. The amount of power used is generally calculated at the time of billing, for example, monthly. Hereinafter, the power consumption calculation process in the present embodiment will be described with reference to the flowchart shown in FIG.
　まず、使用電力量算出部１２は、起動されると交換フラグを参照する。交換フラグがセットされていない場合（ステップ１２１でＮ）、使用電力量算出部１２は、従来と同様に通常の使用電力量算出処理を実施する（ステップ１２４）。すなわち、使用電力量算出部１２は、所定期間（例えば、１月間）の始期の検針値と所定期間の終期の検針値との差分により所定期間における使用電力量を得る。 First, the power consumption calculation unit 12 refers to the replacement flag when it is started. When the exchange flag is not set (N in step 121), the power consumption calculation unit 12 carries out a normal power consumption calculation process as in the conventional case (step 124). That is, the power consumption calculation unit 12 obtains the power consumption in the predetermined period by the difference between the meter reading value at the beginning of the predetermined period (for example, one month) and the meter reading value at the end of the predetermined period.
　交換フラグがセットされている場合（ステップ１２１でＹ）、使用電力量算出部１２は、本実施の形態において特徴的な交換検出時使用電力量算出処理を実施する（ステップ１２２）。この処理について具体例を挙げて説明する。 When the exchange flag is set (Y in step 121), the power consumption calculation unit 12 executes the characteristic power consumption calculation process at the time of exchange detection in this embodiment (step 122). This process will be described with a specific example.
　図７は、データ記憶部１４に保存されている検針値をグラフ形式にて示す図である。図７では、横軸を時間、縦軸を検針値としている。そして、図７に示すグラフは、図３に示す検針値に対応したデータであり、Ｔ１を所定期間の始期、Ｔ４を所定期間の終期とする。Ｔ１における検針値は１００、Ｔ４における検針値は１２０である。そして、既設の電力量計１が撤去される時点（Ｔ２）における検針値は１５０である。そして、新しい電力量計１が設置され、動作確認が終了し、使用電力量の計測が開始される時点（Ｔ３）における検針値は１０である。ここでは、説明の便宜上、電力量計１のメーターが示しうる値は、“０００”から“２００”までの値とする。また、各時点Ｔ１～Ｔ４以外の検針値は、所定期間における使用電力量の計算に必要でないため、図７では、便宜的にグラフを直線で示している。 FIG. 7 is a graph showing the meter reading values stored in the data storage unit 14 in a graph format. In FIG. 7, the horizontal axis is the time and the vertical axis is the meter reading value. The graph shown in FIG. 7 is data corresponding to the meter reading value shown in FIG. 3, and T1 is the start of the predetermined period and T4 is the end of the predetermined period. The meter reading value at T1 is 100, and the meter reading value at T4 is 120. The meter reading value at the time (T2) when the existing watt hour meter 1 is removed is 150. Then, the meter reading value at the time (T3) when the new watt hour meter 1 is installed, the operation check is completed, and the measurement of the power consumption is started is 10. Here, for convenience of explanation, the value that can be indicated by the meter of the watt hour meter 1 is a value from “000” to “200”. Further, since meter reading values other than those at each time point T1 to T4 are not necessary for calculating the amount of power used in a predetermined period, the graph is shown as a straight line for convenience in FIG.
　ところで、従来からの使用電力量算出処理に従うと、検針値は、所定期間の始期（Ｔ１）における１００から最大値の２００に達したことで０に戻り、そして所定期間の終期（Ｔ４）で１２０に達したと判断する。このため、使用電力量は、（２００－１００）＋（１２０－０）＝２２０［ｋＷｈ］と算出する。 By the way, according to the conventional power consumption calculation process, the meter reading value returns to 0 when it reaches the maximum value of 200 from 100 at the beginning (T1) of the predetermined period, and 120 at the end of the predetermined period (T4). Is judged to have reached. Therefore, the amount of power used is calculated as (200-100) + (120-0) = 220 [kWh].
　これに対し、交換検出時使用電力量算出処理では、電力量計１の交換の前と後に分けて使用電力量を算出する。すなわち、電力量計１の交換の直前（Ｔ２）の検針値１５０から所定期間の始期（Ｔ１）の検針値１００を差し引いて差分５０、すなわち既設の古い電力量計１での計測に基づき使用電力量５０［ｋＷｈ］を算出する。続いて、電力量計１の交換の直後（Ｔ３）の検針値１０と所定期間の終期（Ｔ４）の検針値１２０の差分１１０、すなわち新しい電力量計１での計測に基づき使用電力量１１０［ｋＷｈ］を算出する。そして、交換前後の使用電力量を合算することで所定期間における負荷３の使用電力量を算出する。すなわち、使用電力量は、５０＋１１０＝１６０［ｋＷｈ］と算出する。 On the other hand, in the power consumption calculation process at the time of replacement detection, the power consumption is calculated separately before and after the replacement of the watt-hour meter 1. That is, the difference 50, that is, the power used based on the measurement with the existing old watt hour meter 1 by subtracting the meter reading value 100 at the beginning of the predetermined period (T1) from the meter reading value 150 immediately before the replacement of the watt hour meter 1 (T2). The quantity 50 [kWh] is calculated. Subsequently, the difference 110 between the meter reading value 10 immediately after the replacement of the watt hour meter 1 (T3) and the meter reading value 120 at the end of the predetermined period (T4), that is, the power consumption 110 based on the measurement with the new watt hour meter 1 [ kWh] is calculated. Then, the power consumption of the load 3 in a predetermined period is calculated by adding up the power consumption before and after the replacement. That is, the amount of power used is calculated as 50 + 110 = 160 [kWh].
　従来からの使用電力量算出処理では、電力量計１が交換されていることを考慮していない。このため、検針値が電力量計１のメーター値の最大値まで達して０に戻ったとして使用電力量を算出する。また、新しい電力量計１の動作確認テストに使用した電力量も負荷３の使用電力量に加えている。このため、従来では、２２０－１６０＝６０［ｋＷｈ］も余計に負荷３が電力を使用したものとして課金することになっていた。 The conventional power consumption calculation process does not consider that the watt hour meter 1 has been replaced. Therefore, the amount of power used is calculated assuming that the meter reading value reaches the maximum value of the meter value of the watt hour meter 1 and returns to 0. In addition, the amount of power used for the operation confirmation test of the new watt hour meter 1 is added to the amount of power used by the load 3. For this reason, conventionally, 220-160 = 60 [kWh] is also charged as if the load 3 uses electric power.
　本実施の形態においては、電力量計１が交換されていることを考慮するようにし、電力量計１の交換の前と後に分けて使用電力量を算出するようにした。これにより、既設の電力量計１の撤去時点（Ｔ２）における検針値から新しい電力量計１の設置時点（Ｔ３）における検針値までの間における検針値の変動を除外することができ、使用電力量を正しく算出することができる。これにより、正しい課金を行わせることが可能となる。 In the present embodiment, the fact that the watt-hour meter 1 has been replaced is taken into consideration, and the amount of power used is calculated separately before and after the replacement of the watt-hour meter 1. As a result, it is possible to exclude fluctuations in the meter reading value from the meter reading value at the time of removal of the existing watt hour meter 1 (T2) to the meter reading value at the time of installation of the new watt hour meter 1 (T3). The amount can be calculated correctly. This makes it possible to make the correct billing.
　図８は、本実施の形態におけるデータ記憶部１４に記憶されるデータの構成の他の例を示す図である。データ構成自体は、図３に示すデータと同じでよい。図９は、図８に示す検針値をグラフ形式にて示す図である。図９に示すグラフは、Ｔ５を所定期間の始期、Ｔ９を所定期間の終期とする。Ｔ５における検針値は１７０、Ｔ９における検針値は１００である。そして、既設の電力量計１が撤去される時点（Ｔ７）における検針値は１０である。そして、新しい電力量計１が設置され、動作確認が終了し、使用電力量の計測が開始される時点（Ｔ８）における検針値は３０である。ここでは、上記と同様に電力量計１のメーターが示しうる値は、“０００”から“２００”までの値とする。また、各時点Ｔ５～Ｔ９以外の検針値は、使用電力量の計算に必要でないため、図９では、便宜的にグラフを直線で示している。 FIG. 8 is a diagram showing another example of the configuration of data stored in the data storage unit 14 in the present embodiment. The data structure itself may be the same as the data shown in FIG. FIG. 9 is a graph showing the meter reading values shown in FIG. 8 in a graph format. In the graph shown in FIG. 9, T5 is the start of the predetermined period and T9 is the end of the predetermined period. The meter reading value at T5 is 170, and the meter reading value at T9 is 100. The meter reading value at the time (T7) when the existing watt hour meter 1 is removed is 10. Then, the meter reading value is 30 at the time (T8) when the new watt hour meter 1 is installed, the operation check is completed, and the measurement of the power consumption is started. Here, the value that can be indicated by the meter of the watt hour meter 1 as described above is a value from “000” to “200”. Further, since meter reading values other than those at each time point T5 to T9 are not necessary for calculating the amount of power used, the graph is shown as a straight line for convenience in FIG.
　従来からの使用電力量算出処理に従うと、検針値は、所定期間の始期（Ｔ５）における１７０から時点Ｔ６において最大値の２００に達したことで０に戻り、そして所定期間の終期（Ｔ９）で１００に達したと判断する。このため、使用電力量は、（２００－１７０）＋（１００－０）＝１３０［ｋＷｈ］と算出する。 According to the conventional power consumption calculation process, the meter reading value returns to 0 when it reaches the maximum value of 200 at the time point T6 from 170 at the beginning of the predetermined period (T5), and returns to 0 at the end of the predetermined period (T9). It is judged that it has reached 100. Therefore, the amount of power used is calculated as (200-170) + (100-0) = 130 [kWh].
　これに対し、交換検出時使用電力量算出処理では、電力量計１の交換の前と後に分けて使用電力量を算出する。まず、電力量計１の交換の前では、検針値は、所定期間の始期（Ｔ５）における１７０から時点Ｔ６において最大値の２００に達したことで０に戻り、そして電力量計１の交換の直前（Ｔ７）の検針値１０に達している。このため、電力量計１の交換の前の使用電力量は、（２００－１７０）＋（１０－０）＝４０［ｋＷｈ］と算出する。続いて、電力量計１の交換の直後（Ｔ８）の検針値３０と所定期間の終期（Ｔ９）の検針値１００の差分７０、すなわち新しい電力量計１での計測に基づき使用電力量７０［ｋＷｈ］を算出する。そして、交換前後の使用電力量を合算することで所定期間における負荷３の使用電力量を算出する。すなわち、使用電力量は、４０＋７０＝１１０［ｋＷｈ］と算出する。 On the other hand, in the power consumption calculation process at the time of replacement detection, the power consumption is calculated separately before and after the replacement of the watt-hour meter 1. First, before the replacement of the watt-hour meter 1, the meter reading value returns to 0 when it reaches the maximum value of 200 at the time point T6 from 170 at the beginning of the predetermined period (T5), and then the replacement of the watt-hour meter 1 The meter reading value of 10 immediately before (T7) has been reached. Therefore, the amount of power used before the replacement of the watt-hour meter 1 is calculated as (200-170) + (10-0) = 40 [kWh]. Subsequently, the difference 70 between the meter reading value 30 immediately after the replacement of the watt hour meter 1 (T8) and the meter reading value 100 at the end of the predetermined period (T9), that is, the power consumption 70 based on the measurement with the new watt hour meter 1 [ kWh] is calculated. Then, the power consumption of the load 3 in a predetermined period is calculated by adding up the power consumption before and after the replacement. That is, the amount of power used is calculated as 40 + 70 = 110 [kWh].
　以上のようにして所定期間における負荷３の使用電力量を算出すると、制御部１３は、交換フラグをクリアする（ステップ１２３）。 When the amount of power used by the load 3 in the predetermined period is calculated as described above, the control unit 13 clears the replacement flag (step 123).
　以上説明したように、本実施の形態によれば、電力量計１の交換の直後（Ｔ８）の検針値が電力量計１の交換の直前（Ｔ７）の検針値より大きい場合でも、また、検針値が電力量計１のメーターの最大値に達した場合でも、使用電力量を正しく算出することができる。 As described above, according to the present embodiment, even when the meter reading value immediately after the replacement of the watt-hour meter 1 (T8) is larger than the meter reading value immediately before the replacement of the watt-hour meter 1 (T7), also Even when the meter reading value reaches the maximum value of the meter of the watt hour meter 1, the amount of power used can be calculated correctly.
　上記説明では、所定期間として課金を行う１月を想定して説明したが、本実施の形態における交換検出時使用電力量算出処理は、任意の期間においても適用可能である。 In the above explanation, the charge is made on the assumption of January as a predetermined period, but the power consumption calculation process at the time of exchange detection in the present embodiment can be applied to any period.
　また、本実施の形態では、電力量計１としてスマートメーターを想定し、コントローラ１０におけるデータ受信部１１は、電力線５を介して電力量計１の識別情報及び検針値を電力量計１から取得するようにしたが、これに限る必要はない。例えば、データ受信部１１は、他のコンピュータを経由してデータを取得するようにしてもよいし、検針員による入力データを取得するようにしてもよい。 Further, in the present embodiment, a smart meter is assumed as the watt-hour meter 1, and the data receiving unit 11 in the controller 10 acquires the identification information and the meter reading value of the watt-hour meter 1 from the watt-hour meter 1 via the power line 5. I tried to do it, but it doesn't have to be limited to this. For example, the data receiving unit 11 may acquire data via another computer, or may acquire input data by a meter reader.
　また、本実施の形態においては、エネルギーの使用量を計測する計量メーターとして、電力量計を例にして説明したが、前述した交換検出時使用電力量算出処理は、計量メーターがガス、等他のエネルギーの使用量を計測する計量メーターであっても適用することが可能である。 Further, in the present embodiment, the watt-hour meter has been described as an example as a measuring meter for measuring the amount of energy used. However, in the above-described exchange detection power consumption calculation process, the measuring meter is gas, etc. It can also be applied to a meter that measures the amount of energy used in.
　１　電力量計、２　主幹ブレーカー、３　負荷、４　分岐ブレーカー、５　電力線、１０　コントローラ、１１　データ受信部、１２　使用電力量算出部、１３　制御部、１４　データ記憶部。
  1 Electric energy meter, 2 Main breaker, 3 Load, 4 Branch breaker, 5 Power line, 10 Controller, 11 Data receiving unit, 12 Electric energy calculation unit, 13 Control unit, 14 Data storage unit.

Claims (5)

  1. 　施設に設置されている計量メーターにより計測された前記施設の設備のエネルギー使用量の積算値を示す検針値を取得する検針値取得手段と、
    　前記計量メーターの識別情報を取得する識別情報取得手段と、
    　前記検針値取得手段が取得した検針値を参照して前記設備のエネルギー使用量を算出するエネルギー使用量算出手段と、
    　を有し、
    　前記エネルギー使用量算出手段は、前記識別情報取得手段が取得した識別情報から前記計量メーターの交換を検出した場合、前記計量メーターの交換の前と後に分けてエネルギー使用量を算出し、算出したエネルギー使用量を合算することで前記設備のエネルギー使用量を算出することを特徴とするエネルギー使用量算出装置。     A meter reading value acquisition means for acquiring a meter reading value indicating an integrated value of energy consumption of the facility's equipment measured by a measuring meter installed in the facility, and
    Identification information acquisition means for acquiring identification information of the measurement meter, and
    An energy consumption calculation means for calculating the energy consumption of the equipment by referring to the meter reading value acquired by the meter reading value acquisition means, and
    Have,
    When the energy consumption calculation means detects the replacement of the measurement meter from the identification information acquired by the identification information acquisition means, the energy consumption calculation means calculates the energy consumption separately before and after the replacement of the measurement meter, and the calculated energy. An energy consumption calculation device characterized in that the energy usage of the equipment is calculated by adding up the usage.
  2. 　通信機能を有する電力量計と、
    　施設に設置されている電気設備の制御を行うコントローラと、
    　を有し、
    　前記コントローラは、
    　前記電力量計により計測された前記電気設備の使用電力量の積算値を示す検針値を取得する検針値取得手段と、
    　前記電力量計の識別情報を取得する識別情報取得手段と、
    　前記検針値取得手段が取得した検針値を参照して前記電気設備の使用電力量を算出する使用電力量算出手段と、
    　を有し、
    　前記使用電力量算出手段は、前記識別情報取得手段が取得した識別情報から前記電力量計の交換を検出した場合、前記電力量計の交換の前と後に分けて使用電力量を算出し、算出した使用電力量を合算することで前記電気設備の使用電力量を算出することを特徴とする使用電力量監視システム。     A watt-hour meter with a communication function and
    A controller that controls the electrical equipment installed in the facility,
    Have,
    The controller
    A meter reading value acquisition means for acquiring a meter reading value indicating an integrated value of the electric power consumption of the electric equipment measured by the watt hour meter, and a meter reading value acquisition means.
    An identification information acquisition means for acquiring the identification information of the watt hour meter, and
    A power consumption calculating means for calculating the power consumption of the electrical equipment with reference to the meter reading value acquired by the meter reading value acquisition means, and a power consumption calculation means.
    Have,
    When the power consumption calculation means detects the replacement of the watt-hour meter from the identification information acquired by the identification information acquisition means, the power consumption calculation means calculates and calculates the power consumption separately before and after the replacement of the watt-hour meter. A power consumption monitoring system characterized in that the power consumption of the electrical equipment is calculated by adding up the power consumption.
  3. 　前記検針値取得手段は、前記電力量計から電力線を介して検針値を取得することを特徴とする請求項２に記載の使用電力量監視システム。 The power consumption monitoring system according to claim 2, wherein the meter reading value acquisition means acquires a meter reading value from the watt hour meter via a power line.
  4. 　前記電力量計は、当該電力量計の識別情報を内部に保持しており、
    　前記識別情報取得手段は、前記電力量計の電源が投入された時に当該電力量計から電力線を介して送信されてくる当該電力量計の識別情報を取得することを特徴とする請求項２に記載の使用電力量監視システム。     The watt hour meter holds the identification information of the watt hour meter inside.
    The second aspect of the invention is characterized in that the identification information acquisition means acquires the identification information of the watt-hour meter transmitted from the watt-hour meter via the power line when the power of the watt-hour meter is turned on. Described power consumption monitoring system.
  5. 　コンピュータを、
    　施設に設置されている計量メーターにより計測された前記施設の設備のエネルギー使用量の積算値を示す検針値を取得する検針値取得手段、
    　前記計量メーターの識別情報を取得する識別情報取得手段、
    　前記検針値取得手段が取得した検針値を参照して前記設備のエネルギー使用量を算出するエネルギー使用量算出手段、
    　として機能させ、
    　前記エネルギー使用量算出手段は、前記識別情報取得手段が取得した識別情報から前記計量メーターの交換を検出した場合、前記計量メーターの交換の前と後に分けてエネルギー使用量を算出し、算出したエネルギー使用量を合算することで前記設備のエネルギー使用量を算出することを特徴とするプログラム。
          Computer,
    A meter reading acquisition means for acquiring a meter reading value indicating an integrated value of energy consumption of the facility's equipment measured by a measuring meter installed in the facility.
    Identification information acquisition means for acquiring identification information of the measurement meter,
    An energy consumption calculation means for calculating the energy consumption of the equipment by referring to the meter reading value acquired by the meter reading value acquisition means.
    To function as
    When the energy consumption calculation means detects the replacement of the measurement meter from the identification information acquired by the identification information acquisition means, the energy consumption calculation means calculates the energy consumption separately before and after the replacement of the measurement meter, and the calculated energy. A program characterized by calculating the energy consumption of the equipment by adding up the usage.
PCT/JP2020/001155 2020-01-16 2020-01-16 Energy use amount calculation device, used power amount monitoring system and program WO2021144902A1 (en)

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