JP2003167005A - System for measuring electric energy, display terminal for electric energy consumption, electronic watt-hour meter and method for measuring electric energy - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform charging transactions smoothly by grasping electric energy consumption properly. <P>SOLUTION: This system for measuring electric energy 10 is provided with an electronic watt-hour meter 20 and a terminal for electric energy consumption 30. When a transaction indication value, that is, an indication value at the starting time point of applying a rate system, is set by the electronic watt-hour meter 20, a transaction indication value information, that is, an information on the transaction indication value, is received by the terminal for electric energy consumption 30. The setting time point of the transaction indication value is set for the starting point for the calculation of the electric energy consumption based on a demand/supply calendar by the terminal for electric energy consumption 30. Thus, since the setting time point of the transaction indication value as the starting time point of applying the rate system coincides the starting point of the calculation based on the demand/supply calendar, the electric energy consumption from the starting time point of applying the rate system can be grasped properly and the charging transactions can be performed smoothly. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric energy metering system, a used electric energy meter display terminal, an electronic watt hour meter and an electric energy metering method, and in particular, in an industrial field or a general household field, an electric charge according to the electric power used is paid. The present invention relates to an electric energy measuring system, a used electric energy display terminal, an electronic electric energy meter, an electric energy measuring method, etc. for totaling measured electric energy by time zone for calculation.

[0002]

2. Description of the Related Art Electricity meters are installed in factories and households that use electric power, and electric power consumers who receive electric power supply
With regard to the electricity charges according to the amount of electricity used, we will make a price transaction with the electricity supply house that supplies electricity.

The charge transaction between the electric power consumer side and the electric power supplier side is performed according to the tariff system set by the electric power supplier side with respect to the electric power consumer side. Generally, in this tariff system, there is a difference in unit price of electric power depending on the season, day of the week, time of day when electric power is used, or contract contents with the electric power consumer side.

In recent years, a metering pattern complying with such a tariff system is set in advance in an installed electronic watt-hour meter or a device attached thereto, and the metering pattern and the time when the power is used are set. Based on the above, the amount of electric power used is automatically calculated for each time zone. Then, the electric power supplier side uses the amount of electric power used for each time period to make a price transaction with the electric power consumer side.

The electronic watt-hour meter used for measuring the amount of electric power is large, and is used in an industrial electronic watt-hour meter used in a high-voltage environment such as a factory and in a low-voltage environment such as a home. It can be divided into a general household electronic watt hour meter.

Among these, an industrial electronic watt-hour meter is connected to a device attached thereto, and the attached device is
The reading value of the electronic watt-hour meter that measures the electric energy is read, and the weighing pattern set in the accessory device (the weighing pattern used for the weighing of the electronic watt-hour meter for this industry is particularly referred to as "supply and demand calendar"). The power consumption amount for each time zone is calculated based on

On the side of electric power consumers having facilities such as factories that use electric power, the amount of electric power used is measured by a watt hour meter to monitor the operating status of the facility, and the amount of electric power used is measured for a certain period of time. Are used for various cost calculations. On the other hand, the power supply side that supplies the power sets a supply and demand calendar that sets the unit price of the power charge according to the time period in which the power is used, and calculates the amount of power used based on the supply and demand calendar that complies with the rate system. Calculate the charge,
Conducts price transactions with the power consumer side.

FIG. 8 shows an example of a supply and demand calendar set by the electric power supplier. The supply and demand calendar stores a pattern in which the unit price of the power charge is set for each month and for each day depending on the time zone in which the power is used. For example, in the pattern A shown in FIG. 8, the time period, that is, the unit price of the electricity charge is divided into three types.

[0009] Conventionally, an electronic watt-hour meter for measuring the amount of electric power and a metered amount of electric power are used for the charge transaction of the electric power charge between the electric power consumer side and the electric power supplier side based on such a supply and demand calendar. An electric energy metering system is used in combination with a used electric energy display terminal that reads the amount of electricity, calculates the amount of electric power used based on a supply and demand calendar, and displays the calculated electric energy for each time period. The power consumption display terminal stores the contents of the supply and demand calendar set on the power supply house side. The power consumer side installs this power amount measuring system, and the power supplier side stores the supply and demand calendar in the used power amount display terminal by a method such as communication from outside the power amount measuring system.

The electronic watt-hour meter of this watt-hour metering system can be operated automatically by designating the date, or manually by operating a switch provided on the electronic watt-hour meter. Of the measured value of the electric energy, the specified value of the electric energy at a predetermined time, such as when the application of the fee system used for the fee transaction is started, is fixed as the transaction instruction value at the start of the fee transaction. Has become.

On the other hand, the used electric energy display terminal of the electric energy measuring system, after the transaction instruction value of the electronic watt hour meter to be combined is fixed, the instruction value of the subsequent electric energy is kept constant, for example, every 30 minutes. Electric power used within a certain period of time is calculated by calculating the difference between a certain reading value read by communication along with date and time data for each hour, and the reading value before a certain period of time when this reading value was read. Calculate the quantity.
Then, based on the stored supply and demand calendar, it is added to the amount of power used in the time zone corresponding to the time when the power was used.

Here, the timing at which the power consumption display terminal first reads the indicated value of the electronic watt hour meter is referred to as the starting point of the calculation. And, as the timing, after the power consumption display terminal is first attached and the hour of the hour on the clock of the power consumption display terminal or a certain time has passed after the hour, or the power consumption display terminal After initializing the internal data such as the supply and demand calendar stored in and the stored electric energy used for each time zone, the hour of the hour on the hour display of the electricity consumption display terminal or a certain time has passed after the hour Some examples include time.

That is, in the charge transaction between the electric power consumer side and the electric power supplier side using the electric energy metering system, the starting point of the calculation is set at the used electric energy display terminal and the transaction instruction is given at the electronic watt hour meter. After the value is fixed, the power consumption display terminal reads the indicated value of the electronic watt hour meter at regular intervals, calculates the power consumption according to the rate system based on the supply and demand calendar, and adds it by time zone. It is done by going.

Another type of electronic watt-hour meter, which is an electronic watt-hour meter for general households, is different from the conventional industrial watt-hour meter in that the watt-hour pattern is set on the electronic watt-hour meter. The electronic watt-hour meter measures the amount of electric power and calculates the amount of electric power used for each time zone based on the set measuring pattern.

By the way, there are many electric power consumers who have installed such an electric watt-hour meter for general households. Therefore, if there is a contract change in the tariff system between the electricity consumer side and the electricity supplier side, the measurement pattern set for each electronic watt hour meter after installation should be changed respectively. Need to do. for that reason,
An electronic watt-hour meter for general households is provided with a communication function so that the measurement pattern can be easily changed by communication with the outside. As a result, even if a new fee system is applied due to a contract change, it is possible to change the weighing pattern without removing each electronic watt-hour meter once installed. It has become.

FIG. 9 is a functional block diagram of a conventional general household electronic watt-hour meter. An electronic watt-hour meter 100, which is mainly used for general household use, includes an electric energy measuring means 101 for measuring electric energy, a measuring pattern storing means 102 for storing a measuring pattern according to a charge system, and a date, a day of the week, and a time. It has a clocking means 103 for clocking. Further, the electronic watt-hour meter 100 has a control unit 104 that uses the amount of electric power measured by the electric power amount measuring unit 101 and calculates the amount of electric power used for each time zone based on the measuring pattern and the time of the measurement. is doing.

Here, the weighing pattern stored in the weighing pattern storage means 102 is set according to a predetermined fee system, and the electronic watt hour meter 100 is used for each day and for each time zone division based on the weighing pattern. It is designed to measure the amount of electric power. To measure the amount of electric power used, the amount of electric power pulses from the electric power amount measuring means 101 is counted by the used electric energy amount storage means 106 via the time zone changeover switch 105.

Before the application of the new charge system, the measurement pattern storage means 102 is newly added with the start of application of the new charge system and the current measurement pattern area 102a in which the currently applied current measurement pattern is stored. New weighing pattern area 10 for storing new weighing patterns set in
It has a memory consisting of 2b. Furthermore, the weighing pattern storage means 102 has an application start date area 102c in which the application start date of the new weighing pattern is stored. The weighing pattern and the application start date are set by the electricity supplier,
Electronic watt-hour meter 100 New measurement pattern area 102b and application start date area 102c by communication from outside
Stored in. The timekeeping means 103 provides information about the month, day, day of the week, and time (hereinafter referred to as “time etc. information”), and this time etc. information is transmitted to the control means 104.

The control means 104 has a time zone changeover switch 105 and a used electric energy storage means 106.
The control means 104 uses the current measurement pattern and information such as the time to measure the measured amount of electric power, and switches the time zone switch 1
Switch 05. Then, the used power amount is calculated, and the calculation result is stored as the used power amount stored in the memory for each time zone (a to g) as the used power amount in the time zone section switched by the time zone changeover switch 105. The data is stored in the means 106.

Further, the electronic watt-hour meter 100 has an instruction value deciding means for deciding the instruction value at the time of starting the application of the new fee system due to the contract change, among the instruction values of the electric energy which are continuously measured. It has 107. This indicated value fixing means 1
07 allows the start of application of the new charge system to be set at any time by operating a switch provided on the electronic watt-hour meter 100 or the like, and is set in advance before the application of the new charge system is started. It is also possible to set by specifying the day. However, if the start of application of the new charge system is set on the month and day, the confirmation of the indicated value will be done at a predetermined time such as midnight on the start date of the application of the new charge system. There is.

The instruction value determined here is displayed by the display means 108 provided on the electronic watt-hour meter 100, which is composed of a confirmation screen such as a display panel.

[0022]

However, in the conventional electric energy metering system using the electronic watt-hour meter for industrial use and the electronic watt-hour meter for general household use, the following conditions may be encountered depending on the situation in which it is used. There were various problems as shown.

First, problems that occur in various situations where the industrial electric energy metering system is used will be described. First, as a first situation, a case will be described in which an electric power consumer side newly installs an electric power consumption amount display terminal and joins a charge system based on a supply and demand calendar. In this case, usually, the power consumption display terminal is installed on the day or before the start of application of the charge system.

FIG. 10 is a diagram for explaining the flow of processing when a used power amount display terminal is newly installed in the conventional power amount measuring system. In this case, after the installation, the power consumption display terminal sets the starting point of the calculation and starts the calculation automatically on the hour or a fixed time after the hour, regardless of the start date and time of application of the tariff system. . Then, the instruction value of the electronic watt-hour meter is read at regular intervals from the starting point of this calculation, and the used power amount is calculated.

The demand and supply calendar in which the time zone in which the calculated power consumption is added is normally set in the power consumption display terminal after the power consumption display terminal is installed and before the application of the tariff system is started. Therefore, at the time when the power consumption display terminal is installed and the starting point of the calculation is set, the supply and demand calendar is not set yet. Therefore, the used power amount display terminal adds the calculation result to a predetermined time zone that is determined in advance when the supply and demand calendar is not set. However, from the starting point of calculation to the setting of the supply and demand calendar, that is, the amount of power used in period A shown in FIG. Can not do it.

After the supply and demand calendar is set, the amount of electric power used until just before the start of application of the rate system is calculated for each time zone based on the supply and demand calendar. However, the amount of electric power used during this period, that is, the period B shown in FIG. 10 is also the amount of electric power used before the start of the application of the fee system, and cannot be used for the fee transaction as it is.

Then, the amount of power used calculated after the start of application of the rate system, that is, the amount of power used in the period C shown in FIG. 10, is the actual rate in the rate system after the installation of the new power consumption display terminal. It will be used for trading.

Therefore, the power supply house side installs a power consumption display terminal and sets a supply and demand calendar, and then operates a switch provided in the electronic watt-hour meter or charges the electronic watt-hour meter. By designating the date on which the system starts to be applied, the transaction instruction value is fixed at the start of application of the rate system. Then, the transaction instruction value is read by the power consumption display terminal, managed as a transaction instruction value at the start of application of the rate system, and the amount of power used after the application of the rate system is calculated. In other words, it is necessary to separately calculate the electricity charges before and after the application of the rate system using the transaction instruction value at the start of the application of the rate system, and calculate the electricity rate after the application of the rate system. The work at the start was complicated.

As a second situation, a case will be described in which the electronic watt-hour meter combined with the used power amount display terminal is replaced with a new electronic watt-hour meter. In this case, after the installation of the new electronic watt hour meter, it is necessary to initialize the internal data such as the supply and demand calendar and the hourly power usage amount stored in the power usage amount display terminal.

FIG. 11 is a diagram for explaining the flow of processing when the electronic watt hour meter is replaced in the conventional watt hour metering system. In this case, after the electronic watt-hour meter is replaced, in the used power amount display terminal, the starting point of the calculation is set after the initialization and after a lapse of a certain time on the hour or on the hour. After that, a supply and demand calendar is set in the used power amount display terminal.

However, since the electronic watt-hour meter starts weighing immediately after replacement, the amount of used electric power until the used power amount display terminal is initialized and the calculation starting point is set is It will not be added to the power amount display terminal. Then, after the starting point of the calculation is set, the power consumption display terminal reads the instruction value of the electronic watt-hour meter at that time at regular time intervals. However, as described above, the instruction value read here is a value to which the power consumption before the calculation starting point setting is not added, and is a value different from the actual power consumption.

Therefore, after setting the starting point of calculation and setting the supply and demand calendar, the power supplier side confirms the transaction instruction value with the electronic watt-hour meter and reads the transaction instruction value with the used energy display terminal. Then, it is managed as the transaction instruction value at the start of application of the rate system, and the power rate after the application of the rate system is calculated.

Therefore, from the time when the electronic watt hour meter is replaced to the time when the transaction instruction value is fixed, that is, during the period A shown in FIG. Since it does not match the actual amount of electric power used by the meter, it cannot be used for price transactions as it is. Therefore, the electric power supplier side uses the indicated value of the electronic watt-hour meter and the date and time during that period for the electricity charge until the transaction indicated value is finalized, and sets the value for each time zone based on the supply and demand calendar. After conversion, it is necessary to carry out price transactions with the electricity consumers.

As a third situation, a case where the electricity consumer side changes the charge system will be described. In this case, it is necessary to set a new supply and demand calendar according to the changed charge system to the used power amount display terminal while leaving the electronic watt-hour meter and the used power amount display terminal unchanged.

FIG. 12 is a diagram for explaining the flow of processing when changing the charge system in the conventional electric energy measuring system. In this case, the supply and demand calendar according to the rate system before the change is used until midnight on the day when the rate system is changed, and the supply and demand calendar according to the rate system after the change is used from midnight on the day when the rate system is changed. , Supply and demand calendar,
It must be created exclusively for the applicable electricity consumer.

Furthermore, after setting the created demand and supply calendar in the used power amount display terminal, the transaction instruction value of the electronic watt hour meter is automatically determined at midnight on the day when the charge system is changed, and the charge is set. It is necessary to set in advance so that the system will be switched.

As described above, in the conventional electric energy metering system, the electric energy used cannot be calculated in appropriate time zone divisions or the processing for calculating the electric power charge becomes complicated depending on the situation of using the electric energy metering system. There was a problem such as doing.

Also, the electronic watt-hour meter installed mainly in general households has the following problems depending on the situation of using it. 13 and 14 show the flow of electricity amount measurement when changing the charge system of the conventional general household electronic watt hour meter.

FIG. 13 is an explanatory diagram in the case where the application start date of the new charge system is the day after the setting of the electronic watt hour meter or later.
The electronic watt-hour meter is attached to the power consumer side with the current weighing pattern stored in the current weighing pattern area (time T1). If the tariff system is changed after this installation, the new measurement pattern area and the application start date of the new measurement pattern are stored in the new measurement pattern area and the application start date area by communication from the electric power supplier side T
2).

For the period A before the application start date shown in FIG. 13, the amount of electric power used is automatically calculated for each time zone based on the current weighing pattern stored in the present weighing pattern area and the time when the power is used. Is calculated. Then, at midnight of the application start date, the instruction value of the electric energy at that time is fixed (time T3). Thereafter, for the period B shown in FIG. 13, the amount of power used is automatically calculated for each time zone based on the new weighing pattern stored in the new weighing pattern area and the time when the power is used. .

After the designated value is fixed, the current weighing pattern area and the new weighing pattern area are switched,
At the next contract change, the current weighing pattern area is used for storing the new weighing pattern.

FIG. 14 is an explanatory diagram in the case where the application start date of the new charge system is the same day as or before the setting of the electronic watt hour meter. In this case, first, the electronic watt-hour meter is attached to the power consumer side with the current weighing pattern stored in the current weighing pattern area (time T1), and the instruction value is fixed by the switch operation. (Time point T2). Then, the new weighing pattern area is stored in the new weighing pattern area, the current day or the month before the current day is stored in the application start date area, and the electronic watt hour meter is set according to the contract change (time T
3). After this setting is completed, that is, in the period B shown in FIG. 14, the amount of electric power used is automatically changed according to the time zone based on the new weighing pattern stored in the new weighing pattern area and the time when the electric power is used. Is calculated.

As described above, when the application start date of the fee system is on or before the setting date of the electronic watt hour meter, the application start date has already passed when the new weighing pattern is set on the electronic watt hour meter. Therefore, the setting value is switched to the new weighing pattern when the setting is completed.However, the indicated value of the electric energy at the time of the change is not displayed on the confirmation screen. To do. The indicated value at this time becomes the reference point of the new weighing pattern.

However, in that case, the charge amount can be traded using the current measurement pattern and the new measurement pattern for the periods A and B shown in FIG. 14, respectively. The amount of measurement during the period C shown in FIG. 14, which is a period until the new measurement pattern is set, is undetermined before or after the change, and thus it is not possible to determine the time period in which the power is used. Therefore, in such a situation, there is a problem in using the metered amount in the period such as the period C for the fee transaction, since the fixed value determination operation and the application start time point of the new weighing pattern are not the same. there were.

The present invention has been made in view of the above points, and is for appropriately grasping the amount of electric power used and for smoothly performing the charge transaction between the electric power consumer side and the electric power supplier side. An object of the present invention is to provide an electric energy measuring system, a used electric energy display terminal, an electronic electric energy meter, and an electric energy measuring method.

[0046]

In order to solve the above problems, the present invention reads an electric watt-hour meter, the amount of electric power measured by the electronic watt-hour meter, and charges according to the time zone in which the electric power is used. In the electric energy metering system including a used electric energy amount display terminal for calculating the used electric energy amount based on the supply and demand calendar according to the set fee system and displaying it by time zone, a supply and demand calendar storing means for storing the supply and demand calendar, Transaction instruction value confirming means for confirming an instruction value of electric energy as a transaction instruction value which is an instruction value at the start of application of a fee system, and transaction instruction value information transmission for transmitting transaction instruction value information which is information of the transaction instruction value Electronic watt-hour meter having means, transaction instruction value information receiving means for receiving the transaction instruction value information, and the transaction instruction value being fixed when the transaction instruction value information is received. Calculation starting point setting means for setting the calculated time point as the starting point of the calculation based on the supply and demand calendar, and creating display data for displaying the used electric energy by calculating the used electric energy from the starting point of the calculation based on the supply and demand calendar There is provided a power consumption metering system, comprising: a display data creating unit for displaying the display data; and a power consumption displaying terminal having a power consumption displaying unit for displaying the display data.

According to such an electric energy measuring system,
When the electric energy is measured by the electronic watt-hour meter, the transaction instruction value fixing means of the electronic watt-hour meter confirms the instruction value of the electric energy at the start of application of the rate system as the transaction instruction value, and the transaction instruction value The information transmitting means transmits the transaction instruction value information, which is the information of the transaction instruction value, to the power consumption display terminal. In the used power amount display terminal, when the transaction instruction value information is received by the transaction instruction value information receiving means, the calculation starting point setting means,
The time when the transaction instruction value is confirmed by the electronic power meter is set as the starting point of the calculation of the power consumption based on the supply and demand calendar in the power consumption display terminal. Then, the display data creation means of the used power amount display terminal creates the display data for calculating the used power amount based on the supply and demand calendar from the starting point of this calculation and displaying it by time zone, and the used power amount display means , Display its display data. As a result, the point at which the application of the fee system starts, that is, the point at which the transaction instruction value is confirmed by the electronic watt hour meter becomes the starting point for the calculation of the amount of electric power used in the used electric energy display terminal.

Further, in the present invention, in order to solve the above-mentioned problem, an electronic amount is calculated by measuring the amount of electric power and calculating the amount of electric power used for each time zone based on the measuring pattern according to the rate system in which the electricity rate is set. In the electric watt-hour meter, an electric energy measuring means for measuring the amount of electric power, an indicating value fixing means for fixing an indicated value at the start of application of the new charge system, and a current measurement pattern before the start of application of the new charge system. And an operation area in which the application start date of the current weighing pattern is stored,
A reserved area in which a new measurement pattern after the start of application of the new fee system and an application start date of the new measurement pattern are stored, and when the instruction value is confirmed by the instruction value determination means, A weighing pattern storage unit that stores the new weighing pattern stored in the reserved area and the application start date of the new weighing pattern in the operating area, and the current weighing pattern of the operating area at the time of measuring the electric energy or An electronic watt-hour meter is provided that includes: a control unit that controls the calculation of the amount of electric power used for each time zone using the measured electric amount based on the new measurement pattern.

According to such an electronic watt-hour meter, when the indicated value is confirmed by the indicated value deciding means, the new metric pattern stored in the reserved area by the metric pattern storing means and the application start date thereof are displayed. Stored in the operational area. Then, after the instruction value is determined, the amount of electric power used is calculated for each time zone using the measured amount of electric power based on the new measuring pattern stored in this operation area. Therefore, the operation for determining the indicated value and the switching to the new charge system can be performed at the same time.

Further, according to the present invention, when the amount of electric power is measured and the indicated value at the start of application of the new charge system is confirmed, the current measurement pattern before the start of application of the new charge system and the current measurement pattern. The application start date of the pattern is rewritten to the new measurement pattern after the application of the new tariff system and the application start date of the new measurement pattern, and the measured electric energy is used based on the rewritten new measurement pattern. There is provided a method for measuring the amount of electric power of an electronic watt-hour meter, characterized in that the amount of electric power used is calculated for each time zone division.

According to the electric energy measuring method of such an electronic watt-hour meter, when the indicated value is fixed, the electric power used for each time zone division using the measured electric energy based on the new measuring pattern. Since the calculation of the amount is performed, the operation of determining the indicated value and the switching to the new charge system are performed at the same time.

[0052]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below by taking an electric energy metering system mainly used in industrial fields and the like and an electronic watt hour meter mainly used in general household fields as examples. Although described with reference to the drawings, it goes without saying that the field is not particularly limited to this.

First, the electric energy measuring system will be described. FIG. 1 is a configuration block diagram of an electric energy measuring system. The electric energy metering system 10 reads the electric energy meter 20 that continuously measures the electric energy and the electric energy measured by the electronic energy meter 20, and the electric power charge is set according to the usage time of the electric power. It is composed of a power consumption display terminal 30 for calculating the power consumption based on a supply and demand calendar according to the charge system and adding and displaying it for each used time zone.

The electronic watt hour meter 20 of the electric energy measuring system 10 has a demand and supply calendar storage means 21 for storing a demand and supply calendar. The contents of the supply and demand calendar are set by the power supply house side, and are stored in the supply and demand calendar storage means 21 by communication from the power supply house side outside the power amount measuring system 10.

The supply and demand calendar storage means 21 has an operation area 21a in which an old supply and demand calendar, which is a supply and demand calendar actually used, is stored, and a supply and demand calendar according to the charge system when newly joining the charge system, or It is composed of a memory including a reservation area 21b in which a new supply and demand calendar, which is a supply and demand calendar used after the old supply and demand calendar in the operation area, is stored. In the electric energy measurement system 10, when calculating the amount of electric power used, the operation area 21
Based on the supply and demand calendar stored in a.

Further, the electronic watt-hour meter 20 determines, as a transaction instruction value, the transaction instruction value deciding means 22 which decides the instruction value at the start of application of the fee system among the instruction values of the electric energy which are continuously measured. have. This transaction instruction value fixing means 2
With 2, the application start time of the charge system can be set at any time by operating the switch provided on the electronic watt-hour meter, and the date is specified in advance before the application of the charge system is started. It can also be set by However, when the application start time of the fee system is set in the electronic watt-hour meter 20 on the month and day, the transaction instruction value is fixed at midnight of the application start date of the fee system.

As for the transaction instruction value thus determined, the transaction instruction value information which is the information of the transaction instruction value can be transmitted to the power consumption display terminal 30 by the transaction instruction value information transmitting means 23. There is.

On the other hand, the used electric energy display terminal 30 of the electric energy measuring system 10 has the transaction instruction value information receiving means 31, and the transaction instruction value information transmitting means 23 of the electronic watt hour meter 20.
The transaction instruction value information transmitted by is detected and received at regular time intervals, for example, every 30 minutes.

Further, the power consumption display terminal 30 has a calculation start point setting means 32 for setting a calculation start point at the time of starting the calculation when calculating the power consumption based on the supply and demand calendar. Using the transaction instruction value information received by the instruction value information receiving means 31, the electronic watt hour meter 2
The time when the transaction instruction value is confirmed at 0 is set as the starting point of the calculation of the power consumption based on the supply and demand calendar in the power consumption display terminal 30.

Further, the used electric energy display terminal 30 instructs to read the instruction value of the electric energy measured by the electronic watt-hour meter 20 together with the date and time data at regular time intervals such as every 30 minutes. It has a value reading means 33. Then, the used power amount display terminal 30 is used within the fixed time period from the difference between the certain read value read by the display data creating means 34 and the read value before the fixed time period during which the certain read value is read. The calculated amount of electric power used is calculated, and based on the supply and demand calendar, display data for adding and displaying the amount of electric power used in the time zone corresponding to the time when the electric power is used is created. The generated display data is displayed as the amount of power used for each time period by the amount-of-power display unit 35 including a display device.

Further, the power consumption display terminal 30 has an initialization means 36, which is a switch for initializing the internal data such as the power consumption for each time zone, if necessary. When the internal data is initialized by the initialization means 36, the power consumption display terminal 30 causes the calculation start point setting means 32 to determine the finalized time point of the transaction instruction value at the time closest to the initialization time. It is designed to be set as the starting point of calculation.

In the electric energy metering system 10 having the above-mentioned configuration, the supply and demand calendar set by the electric power supplier is stored in the reserved area 21b of the memory which is the supply and demand calendar storage means 21, and further is the transaction instruction value deciding means 22. When the transaction instruction value is fixed by operating a switch provided in the electric energy meter 20 or by setting the date, the supply and demand calendar in the reservation area 21b is stored in the operation area 21a. Then, the transaction instruction value information, which is information on the transaction instruction value, is transmitted from the electronic watt-hour meter 20 by the transaction instruction value information transmission means 23.

On the other hand, the power consumption display terminal 30 communicates with the electronic watt hour meter 20 at regular intervals, and when the transaction instruction value information receiving means 31 receives the transaction instruction value information, the calculation starting point setting means. The time when the transaction instruction value information is confirmed by 32 is set as the starting point of the calculation of the amount of power used. After that, the used electric energy display terminal 30 reads the instruction value of the electric energy of the electronic watt-hour meter 20 at regular intervals from the starting point of the calculation by the instruction value reading means 33.
Then, the display data creating means 34 calculates the amount of electric power used within a fixed time, and based on the supply and demand calendar stored in the operation area 21 a of the electronic watt-hour meter 20,
Display data is created to add and display the amount of power used in the time zone corresponding to the time when power is used, and this display data is displayed.

When the internal data of the power consumption display terminal 30 is initialized by the operation of the switch which is the initialization means 36, the power consumption display terminal 30 displays
When the transaction instruction value information receiving means 31 receives the transaction instruction value information by communicating with the electronic watt-hour meter 20 at regular time intervals, the transaction instruction value final time point closest to the initialized time point is calculated. The starting point setting means 32 sets the starting point of the calculation.

According to the electric energy measuring system 10 described above,
By the switch operation or the setting of the application start date in the electronic watt-hour meter 20, the transaction instruction value at the start of application of the fee system is confirmed, and in response to the operation of confirming the transaction instruction value in the electronic watt-hour meter 20, The power consumption display terminal 30,
The time when the transaction instruction value is fixed is set as the starting point for the calculation of the amount of power used based on the supply and demand calendar. This allows
The point at which the transaction instruction value is fixed, which is the start of application of the tariff system, will coincide with the starting point of the calculation based on the supply and demand calendar, so the amount of power used from the start of the application of the tariff system can be grasped in an appropriate time zone Will be able to
Enables smooth rate transactions.

The operation processing of the above-described electric energy measuring system 10 in various situations will be described below. First, when the electricity consumer side newly joins the tariff system, that is,
A case of newly installing the used power amount display terminal of the power amount measurement system will be described.

FIG. 2 is a diagram for explaining the flow of processing when a new power consumption display terminal is installed. On the power consumer side, after the new power consumption display terminal is installed and connected to the electronic watt hour meter, the demand and supply calendar according to the charge system
It is stored in the reserved area of the memory of the electronic watt hour meter by communication from the power supplier side.

Here, if the application start date of the charge system is the installation day of the power consumption display terminal, the switch provided in the electronic watt hour meter should be operated at the start of application of the charge system. Will set the time when the tariff system will be applied. At this time, in the electronic watt-hour meter, the instruction value of the electric energy at the time when the switch operation is performed is fixed as the transaction instruction value at the start of application of the fee system.

Further, in the electronic watt hour meter, the supply and demand calendar stored in the reserved area is stored in the operation area when the transaction instruction value is fixed. Then, the transaction instruction value information, which is the information of the confirmed transaction instruction value, is transmitted to the power consumption display terminal.

When the transaction instruction value information is received, the power consumption display terminal determines when the transaction instruction value is fixed, that is, when the switch system is operated and the application of the charge system starts.
It is set as the starting point for calculations based on the supply and demand calendar. Then, the supply and demand calendar stored in the operation area of the electronic watt hour meter is read by the used power amount display terminal.

Thereafter, in the period A shown in FIG. 2, the used electric energy display terminal reads the indicated value of the electronic watt hour meter together with the date and time data at regular time intervals such as every 30 minutes, The difference between a certain read instruction value and the instruction value that has been read for a certain period of time is calculated to calculate the amount of power used within the certain period of time. Then, based on the supply and demand calendar, add to the amount of power used in the time zone corresponding to the time when the power was used,
Display the result.

On the other hand, when the application start date of the charge system is the day after the installation of the power consumption display terminal, the date of application of the charge system is set in advance by the electronic watt hour meter. The indicated value of the electronic watt hour meter after midnight of the application start date will be fixed as the transaction indicated value.

The subsequent operation processing is the same as the above-mentioned case where the application start date of the fee system is the installation day of the power consumption display terminal. That is, when the transaction instruction value is determined by the electronic watt hour meter, the supply and demand calendar of the reserved area is stored in the operation area, and the transaction instruction value information is transmitted to the used power amount display terminal. Then, when the transaction instruction value information is received by the power consumption display terminal and the transaction instruction value is fixed, that is, the midnight of the set application start date is set as the starting point of the calculation based on the supply and demand calendar. , The supply and demand calendar of the operation area is read.
Thereafter, in the period A shown in FIG. 2, the power consumption display terminal reads the indication value of the electronic watt-hour meter at regular time intervals and calculates the power consumption used within the constant time,
Based on the supply and demand calendar, the amount of power used is added for each time zone and the result is displayed.

By using the electric energy measuring system of this embodiment in such a situation, the time when the transaction instruction value is confirmed by the electronic electric energy meter coincides with the starting point of the calculation of the used electric energy display terminal. After the operation of confirming the transaction instruction value, the power consumption is calculated based on the supply and demand calendar. Therefore, it is not necessary to manage the fixed transaction instruction value and calculate the amount of electricity used separately before and after the start of application of the tariff system, and divide the amount of electricity used into appropriate time zones. In addition to being able to perform calculations, smooth rate transactions can be performed.

Next, the case of replacing the electronic watt-hour meter combined with the used power amount display terminal will be described. In this case, after installing the electronic watt hour meter, it is necessary to initialize internal data such as the amount of power used for each time zone, which is stored in the terminal for displaying the amount of power used.

FIG. 3 is a diagram for explaining the flow of processing when replacing the electronic watt hour meter. In this case, before the installation of the new electronic watt-hour meter, the supply and demand calendar and the application start date which are continuously applied even after the replacement of the electronic watt-hour meter are set. At this time, the supply and demand calendar is stored in the reserved area of the memory of the electronic watt hour meter. In addition, the application start date set here does not necessarily have to be the first day of the tariff system, as long as it is set to a day before the replacement of the electronic watt hour meter, such as the beginning date of the demand and supply calendar. Good.

Then, the old electronic watt-hour meter is removed. Immediately before installing a new electronic watt hour meter, the switch instruction value is confirmed by operating the switch. As a result, the supply and demand calendar of the reserved area is stored in the operation area. As a result, it becomes possible to calculate the amount of electric power used based on the supply and demand calendar of the operation area immediately after installing a new electronic watt hour meter.

Then, a new electronic watt-hour meter is attached while the used power amount display terminal is left as it is, and is connected to the used power amount display terminal. The used electric energy display terminal needs to initialize internal data by operating a switch provided in the used electric energy display terminal because the electronic watt hour meter to be combined is replaced. After initialization,
On the power consumption display terminal, the application start date set in the electronic watt hour meter is read, and after confirming that the application start date is a date earlier than the current time, the transaction instruction at the closest point The value, that is, in this case, the transaction instruction value at the time of being confirmed by the switch operation immediately before mounting the electronic watt hour meter is set as the starting point of the calculation.

After that, in the used power amount display terminal, the supply and demand calendar is read from the operation area of the electronic watt hour meter. Then, in the period A shown in FIG. 3, the used power amount display terminal reads the indicated value of the electronic watt hour meter at regular time intervals, adds the used power amount for each time zone based on the supply and demand calendar, and Display the result.

When the power metering system of the present embodiment is used in such a situation, the transaction instruction value is fixed immediately before installing a new electronic watt hour meter, and then the new electronic watt hour meter is installed. At the time of this installation, the electronic watt-hour meter starts weighing. Next, the used power amount display terminal is initialized, and the calculation start point is the closest to this point in time when the transaction instruction value is fixed, that is, the time immediately before the installation of a new electronic watt hour meter. As a result, the time when the transaction instruction value is confirmed by the electronic watt-hour meter and the starting point of the calculation of the used power amount display terminal are made to coincide with each other. The amount can be grasped in the appropriate time zone division. Therefore, it is not necessary to manage the confirmed transaction instruction value, convert the power consumption that could not be calculated by the power consumption display terminal before the confirmation operation, and perform the fee transaction.

Next, a case where the electricity consumer side changes the charge system will be described. In this case, it is necessary to set the demand and supply calendar according to the changed tariff system while leaving the electronic watt-hour meter and the used electric power amount display terminal unchanged.

FIG. 4 is a diagram for explaining the flow of processing when changing the fee system. In this case, the application start date of the new fee system is set on the electronic watt-hour meter and the used power amount display terminal by communication from the power supply house side on or before the application start date. Then, a new supply and demand calendar, which is a supply and demand calendar having contents according to the new charge system, is stored in the reserved area of the electronic watt hour meter.

Here, if the application start date of the new charge system is the same day as the installation of the used power amount display terminal, at the time of switching of the charge system, the charge is set by operating the switch provided in the electronic watt hour meter. The point at which the system will be switched is set. At this time, in the electronic watt hour meter, the instruction value of the electric energy at the time when the switch operation is performed is determined as the transaction instruction value used for the fee transaction of the new fee system.

Further, at the time when this confirming operation is performed,
The electronic watt-hour meter stores the new supply and demand calendar stored in the reserved area in the operating area, and rewrites the old supply and demand calendar that was stored in the operating area until then, which is the supply and demand calendar before the change in the tariff system. . The transaction instruction value information, which is the information on the confirmed transaction instruction value, is transmitted to the power consumption display terminal.

When the transaction instruction value information is received, the used electric energy display terminal shows the time point when the transaction instruction value is confirmed, that is, the time point at which the charge system is switched when the switch operation is performed.
It is set as the starting point for calculations based on the new supply and demand calendar.
The transaction instruction value at this time serves not only as a starting point for the calculation based on the new supply and demand calendar, but also as an end point for calculating the power consumption based on the old supply and demand calendar. Therefore,
Using this transaction instruction value, the amount of electric power used until the transaction instruction value is confirmed, that is, the amount of electric power used in the period A shown in FIG. 4, is calculated based on the old supply and demand calendar.

After that, the new power supply and demand calendar stored in the operation area of the electronic watt hour meter is read by the power consumption display terminal. Thereafter, in the period B shown in FIG. 4, the used electric energy display terminal reads the instruction value of the electronic watt-hour meter at regular time intervals, for example, every 30 minutes, and a certain read instruction value The difference between the instruction value and the instruction value before the elapse of a certain period of time is calculated, and the amount of electric power used within the certain period of time is calculated. Then, based on the new supply and demand calendar of the operation area, the electric power is added to the amount of electric power used in the time zone corresponding to the time of use, and the result is displayed.

On the other hand, if the application start date of the new charge system is the day after the installation of the used power amount display device, the date for switching the charge system is set in advance by the electronic watt hour meter. The electronic watt-hour meter's indicated value after midnight of the application start date is confirmed as the transaction indicated value.

The subsequent operation processing is the same as the above-mentioned case where the application start date of the new charge system is the installation day of the used power amount display terminal. That is, at the time when the confirmation operation is performed, the electronic watt hour meter stores the new demand and supply calendar of the reserved area in the operation area, and the transaction instruction value information is transmitted to the used power amount display terminal. Then, when the transaction instruction value information is received by the power consumption display terminal and the transaction instruction value is confirmed, that is, the midnight of the application start date of the new charge system is set as the starting point of the calculation based on the supply and demand calendar. At the same time, the new supply and demand calendar of the operation area is read. Thereafter, in the period B shown in FIG. 4, the power consumption display terminal reads the indication value of the electronic watt-hour meter at regular time intervals, calculates the power consumption used within the constant time, and calculates the new supply and demand calendar. Based on, the power consumption is added for each time zone and the result is displayed. Further, the amount of power used during the period A shown in FIG. 4 is calculated based on the old supply and demand calendar using the confirmed transaction instruction value.

By using the electric energy measuring system of this embodiment in such a situation, the time when the transaction instruction value is confirmed by the electronic electric energy meter and the starting point of the calculation of the used electric energy display terminal coincide with each other. Before the operation of confirming the transaction instruction value, the power consumption is calculated based on the old supply and demand calendar of the operation area,
After the operation of confirming the transaction instruction value, the used power amount is calculated based on the new supply and demand calendar stored in the reserved area to the operation area. Therefore, it is not necessary to create a supply and demand calendar including a supply and demand calendar according to the rate system before the change and a supply and demand calendar according to the rate system after the change, and it is automatically switched at the start of application of the new rate system. There is no need to set it.

Next, an electronic watt-hour meter mainly used in the general household field will be described with reference to the drawings. FIG. 5 is a functional block diagram of the electronic watt hour meter.

The electronic watt-hour meter 40, which is mainly used for general household use, has an electric energy measuring means 41 for measuring the electric energy.
It has a measurement pattern storage means 42 for storing the measurement pattern according to the charge system, and a time measurement means 43 for measuring the date, the day of the week, and the time. In addition, an electronic watt hour meter 4
0 has a control unit 44 that uses the amount of electric power measured by the electric power amount measuring unit 41 and calculates the amount of electric power used for each time zone based on the weighing pattern and the month, day, day of the week, and time of the measurement. ing.

Here, the weighing patterns stored in the weighing pattern storage means 42 are set according to a rate system in which the electricity rate varies depending on the season, the day of the week, and the time of day. In this measurement pattern, first, a seasonal classification is set in which a difference is set in the electricity charges depending on the season in which the electric power is used. Furthermore, the day of the week that sets the charge difference depending on whether the measurement time of the amount of electricity is weekday, Saturday, or Sunday / holiday is set, and further, the charge difference is set according to the time zone that includes the measurement time point. Time zone classification is set. In addition, the end of the year, the beginning of the year, the day before holidays, and other specific days are special dates, and there are different gaps.

Therefore, the electricity rate changes depending on when the electricity is used, that is, when the measurement of the amount of electricity is the month and day of which season division, which day of the week division, and which time zone division is included. . The electronic watt-hour meter 40 is adapted to calculate the amount of electric power used for each day, for each time zone division based on the measurement pattern. Further, the calculation of the power consumption is performed by reading the instruction value of the electronic watt-hour meter 40 at regular time intervals and reading the instruction value at a certain measurement time point read and the instruction value before the elapse of a constant time period at which the instruction value is read. This is done by calculating the difference between and.

The weighing pattern storage means 42 is an operation area 42A capable of storing information such as weighing patterns.
And a reserved area 42B. The operation area 42A stores a current measurement pattern area 42A1 in which a current measurement pattern, which is a measurement pattern that is currently used before the start of application of a new fee system, is stored, and an application start date of the current measurement pattern. The application start date area 42A2 is provided. In the reserved area 42B, a new weighing pattern area 42B1 in which a new weighing pattern which is a new weighing pattern set with the start of application of a new fee system is stored, and an application start date of the new weighing pattern are stored. The application start date area 42B2 is provided. The current weighing pattern or new weighing pattern and each application start date are set by the electric power supplier, and the electronic watt hour meter 40
Through the communication from the external power supply house side, the operation area 42A or the reserved area 42 of the weighing pattern storage means 42
The data is stored in each area B.

The clocking means 43 is composed of, for example, a clock which provides time and other information about the date, the day of the week, and the time, and this time and other information is transmitted to the control means 44.

The control means 44 uses the time zone changeover switch 4
5 and used power amount storage means 46. The control unit 44 controls the amount of electric power measured by the electric power amount measuring unit 41,
The time zone changeover switch 45 is switched using the current measurement pattern stored in the measurement pattern storage means 42 and the time information transmitted from the time measurement means 43. Then, the power consumption is calculated, and the calculation result is stored as a power consumption in a memory for each time zone (a to g) as the power consumption in the time zone section switched by the time zone changeover switch 45. It is adapted to be stored in the means 46. In this way, the control unit 44 calculates the amount of electric power used based on the current measurement pattern stored in the operation area 42A at the time of measuring the amount of electric power.

Further, the electronic watt-hour meter 40 is an instruction value deciding means for deciding the instruction value at the time of starting the application of the new fee system due to the contract change, out of the instruction values of the continuously measured electric energy. Have 47. This indicated value determination means 47
Can set the application start time of the new charge system at any time by operating the switch provided in the electronic watt-hour meter 40, and set the date in advance before the application of the new charge system. It can also be set by specifying it. However, if the application start time of the new charge system is set on the electronic watt-hour meter 40 by month and day, the confirmation of the indicated value will be performed at midnight of the application start date of the new charge system. It has become.

The designated value confirmed here is displayed by the display means 48 provided in the electronic watt hour meter 40, which is constituted by a confirmation screen such as a display panel. In the electronic watt-hour meter 40 having the above-described configuration, the new weighing pattern set by the power supply house is stored in the reserved area 42B, and further, the operation of determining the indicated value is performed by operating the switch or setting the date. And the reservation area 42
The new weighing pattern for B is stored in the operation area 42A. Then, the confirmed indication value is
It is displayed on the confirmation screen constituting the display means 48.

According to such an electronic watt hour meter 40,
Before confirming the instruction value, the amount of power used is calculated based on the current measurement pattern of the operation area 42A, and when the instruction value is confirmed, the new measurement is stored from the reserved area 42B to the operation area 42A. The amount of power used is calculated based on the pattern. As a result, it is possible to avoid a situation in which the measured amount before and after the application of the new fee system cannot be processed based on either the current measuring pattern or the new measuring pattern. Therefore, it becomes possible to grasp the amount of electric power used in an appropriate time zone division, and smooth charge transaction becomes possible.

[0100] Next, a method of measuring the amount of electric power when the charge system is changed between the side of the electric power consumer who uses such an electronic watt-hour meter and the side of the electric power supplier who supplies electric power. Will be described. Here, when switching from the current measurement pattern before the change of the charge system to the new measurement pattern after the change of the charge system, the new charge system is applied from the day after the setting of the new measurement pattern to the electronic watt hour meter. And when it starts
The case where the application of the new tariff system is started on or before the setting of the new measurement pattern will be explained.

FIG. 6 is an explanatory view when the day after the setting of the new measurement pattern is the application start date of the new fee system.
In this case, first, the electronic watt hour meter stores the current measurement pattern in the current measurement pattern area of the operation area, and the application start date area of the operation area indicates the date when the application of the current measurement pattern is started. Installed on the electric power consumer side with the start date of application before change to a new tariff system (hereinafter referred to as "pre-change application start date") stored (time T
1). In this state, nothing is stored in the reserved area.

After the electronic watt hour meter is installed, the new weighing pattern is stored in the new weighing pattern area of the reserved area by communication from the power supply house side, and after the charge system is changed in the application start date area of the reserved area. The application start date of the new measurement pattern (hereinafter referred to as “application start date after change”) is stored (time point T2).

If the changed application start date stored in the application start date area of the reserved area is the day after the day after the new measurement pattern is set, the electronic watt-hour meter displays the current measurement pattern area of the operation area. Based on the current measurement pattern and the time when the electric power is used, the electric power consumption is automatically calculated for each time zone (period A).

Then, the electronic watt hour meter passes the midnight of the application start date of the new charge system, that is, the midnight of the application start date after the change stored in the application start date area of the reserved area. At this point, the indicated value of the measured electric energy is confirmed and displayed on the confirmation screen. Furthermore, in the electronic watt-hour meter, when this indicated value is confirmed, the new weighing pattern and the changed application starting date stored in the new weighing pattern area and the application starting date area of the reserved area are Are stored in the current measurement pattern area and the application start date area (time T3). As a result, nothing is stored in the new weighing pattern area and the application start date area of the reserved area.

When the new weighing pattern is stored in the current weighing pattern area of the operation area, the electronic watt-hour meter determines based on the new weighing pattern stored in the current weighing pattern area and the time when the power is used. Automatic calculation of the amount of electric power used for each time zone is started (period B).

If the changed application start date stored in the application start date area of the reserved area is the next day or later,
Even when the instruction value confirmation operation is artificially performed in the period A after the time point T2, the electronic watt-hour meter confirms the instruction value of the electric energy at that time point and displays it on the confirmation screen. Information stored in the area is not stored in the operational area. As described above, the information stored in the reserved area is stored in the operation area.The indication value is fixed after midnight of the application start date after the change when the new tariff system is applied. When it was done.

If the application start time of the new weighing pattern is to be changed before the application start date after the change stored in the application start date area of the reserved area (time T4), the electronic watt hour meter is used. Invalidates the settings associated with the change. As a result, the application start time of the new measurement pattern does not go back accidentally, the reference point of the new measurement pattern is secured, and the amount of power consumption can be properly measured.

FIG. 7 is an explanatory diagram in the case where the day on which the new measurement pattern is set or earlier is the application start date of the new fee system. In this case, first, the electronic watt-hour meter is attached to the power consumer side with the current measurement pattern area and the application start date area of the operation area storing the current measurement pattern and the application start date before change (time point). T1). In this state, nothing is stored in the reserved area.

After the electronic watt-hour meter is installed, the new weighing pattern and its application starting date, that is, the new weighing pattern are set in the new weighing pattern area and the application starting date area of the reserved area by communication from the power supplier side. The date of setting or the date before that is stored respectively (time point T
2). The electronic watt-hour meter determines the amount of power used for each time zone based on the current weighing pattern stored in the current weighing pattern area of the operation area and the time when the power was used until the indicated value confirmation operation is performed. Continue to calculate automatically (Period A).

When the instruction value fixing operation is performed, the electronic watt hour meter determines that the application start date stored in the application start date area of the reserved area is the same day or before the current day, and the instruction value is Confirmed and displayed on the confirmation screen.
Furthermore, with the electronic watt-hour meter, when the indicated value is confirmed, the new weighing pattern and its application starting date stored in the new weighing pattern area and the application starting date area of the reserved area are They are stored in the measurement pattern area and the application start date area, respectively (time point T3). As a result, nothing is stored in the new weighing pattern area and the application start date area of the reserved area.

When the new weighing pattern is stored in the current weighing pattern area of the operation area, the electronic watt hour meter determines, based on the new weighing pattern stored in the current weighing pattern area and the time when the power is used. Automatic calculation of the amount of electric power used for each time zone is started (period B).

As shown in FIGS. 6 and 7, when the charge pattern is changed and the measurement pattern of the electronic watt-hour meter is changed before and after the change, the new measurement pattern and its application start in the reserved area. Store the day. And
At the start of application of the new tariff system, the reference value as the reference point of the new weighing pattern is fixed, and the current weighing pattern stored in the operation area is rewritten with the new weighing pattern in the reserved area. As a result, even when the weighing pattern is changed due to the change of the fee system, the time point at which the indicated value is fixed becomes the starting time point of applying the new weighing pattern.
Through the periods A and B shown in FIGS. 6 and 7, respectively,
It becomes possible to grasp the amount of power used in an appropriate time zone.

[0113]

As described above, according to the present invention, the electric energy metering system uses the electronic watt-hour meter when the transaction instruction value, which is the instruction value at the start of application of the fee system, is confirmed. A configuration in which transaction instruction value information, which is value information, is received by a power usage amount display terminal, and the power usage amount display terminal sets the time at which the transaction instruction value is finalized as the starting point for calculating the power usage amount based on the supply and demand calendar. I chose As a result, the fixed point of the transaction instruction value, which is the start point of the application of the fee system, will match the starting point of the calculation based on the supply and demand calendar.
It becomes possible to properly grasp the amount of electric power used from the start of application of the tariff system, and smooth tariff transactions become possible.

Further, according to the present invention, the electronic watt-hour meter rewrites the current weighing pattern with the new weighing pattern when the indicated value at the start of application of the new tariff system is confirmed, and the electric energy used thereafter is changed. Is calculated based on the new weighing pattern. As a result, when a new tariff system is applied due to a contract change, it becomes possible to grasp the amount of electric power used in an appropriate time zone division, and smooth tariff transaction becomes possible.

[Brief description of drawings]

FIG. 1 is a configuration block diagram of an electric energy measuring system of the present invention.

FIG. 2 is a diagram illustrating a processing flow when a new power consumption display terminal is installed.

FIG. 3 is a diagram illustrating a processing flow when the electronic watt hour meter is replaced.

FIG. 4 is a diagram illustrating a processing flow when changing a fee system.

FIG. 5 is a functional block diagram of an electronic watt hour meter.

FIG. 6 is an explanatory diagram in the case where the day after the setting of the new measurement pattern is the application start date of the new fee system.

FIG. 7 is an explanatory diagram in a case where the day of setting a new measurement pattern or before that is the application start date of a new fee system.

FIG. 8 is an example of a supply and demand calendar set by the power supply house side.

FIG. 9 is a functional block diagram of a conventional home-use electronic watt-hour meter.

FIG. 10 is a diagram illustrating a flow of processing when a used power amount display terminal is newly installed in the conventional power amount measuring system.

FIG. 11 is a diagram illustrating a processing flow when replacing an electronic watt hour meter in a conventional watt hour metering system.

FIG. 12 is a diagram illustrating a flow of processing when changing the charge system in the conventional electric energy measuring system.

FIG. 13 is an explanatory diagram when the application start date of the new charge system is the day after the setting of the electronic watt hour meter or later.

FIG. 14 is an explanatory diagram in the case where the application start date of the new charge system is the same day as or before the setting of the electronic watt hour meter.

[Explanation of symbols] 10 Electric energy measurement system 20 Electronic energy meter 21 Supply and demand calendar storage means 21b Reserved area 21a Operation area 22 Transaction instruction value fixing means 23 Transaction instruction value information transmission means 30 Power consumption display terminal 31 Transaction instruction value information receiving means 32 calculation starting point setting means 33 Reading value reading means 34 Display data creation means 35 Electric power consumption display means 36 initialization means 40 Electronic energy meter 41 Electric energy measuring means 42 weighing pattern storage means 42A Operation area 42B Reserved area 42A1 Current measurement pattern area 42B1 New weighing pattern area 42A2, 42B2 Application start date area 43 Timekeeping means 44 Control means 45 hour switch 46 Power consumption storage means 47 Measured value determination means 48 display means

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masayuki Kamijo             1-1 Tanabe Nitta, Kawasaki-ku, Kawasaki-shi, Kanagawa             Within Fuji Electric Co., Ltd. (72) Inventor Shigeaki Harayama             1-1 Tanabe Nitta, Kawasaki-ku, Kawasaki-shi, Kanagawa             Within Fuji Electric Co., Ltd.

Claims (18)

[Claims] 1. An electric energy meter and an electric energy meter measured by the electronic energy meter are used, and the amount of electric energy used is based on a supply and demand calendar according to a rate system in which a fee is set according to a time zone in which the electric energy is used. In a power metering system that includes a power consumption display terminal that calculates and displays by time zone, a demand and supply calendar storage means that stores a demand and supply calendar, and an indication value of the amount of electricity at the start of application of the tariff system. An electronic watt-hour meter having transaction instruction value confirming means for confirming as a transaction instruction value, and transaction instruction value information transmitting means for transmitting transaction instruction value information which is information on the transaction instruction value, and the transaction instruction A transaction instruction value information receiving means for receiving value information, and a time point at which the transaction instruction value is confirmed when the transaction instruction value information is received, is set as a starting point of calculation based on the supply and demand calendar. Calculation starting point setting means, display data creating means for calculating the used electric energy from the starting point of the calculation based on the supply and demand calendar to create display data for displaying by time zone, and use for displaying the display data An electric energy metering system comprising: an electric energy display terminal having an electric energy display means; 2. The electric energy metering system according to claim 1, wherein the transaction instruction value fixing means is a switch that can confirm the transaction instruction value when operated at the time of starting the application. . 3. The electric power according to claim 1, wherein the transaction instruction value fixing means can set the application start time point in advance and confirms the transaction instruction value when the application start time point has elapsed. Quantity measuring system. 4. The electronic watt-hour meter includes, as the supply and demand calendar storage means, an operation area in which an old supply and demand calendar, which is a supply and demand calendar before the application of the charge system is stored, and a supply and demand calendar of the charge system. The electronic watt-hour meter is stored in the reserved area when the transaction instruction value is confirmed by the transaction instruction value confirmation means. The electric energy metering system according to claim 1, wherein the operating area is rewritten with the new supply and demand calendar, and the used electric energy display terminal performs calculation based on the new supply and demand calendar of the operation area. 5. The used electric energy display terminal has an instruction value reading means for reading an indicated value of the electric energy measured by the electronic watt hour meter, and the electric energy measured after setting the starting point of the calculation. The electric energy metering system according to claim 1, wherein the electric energy consumption is calculated from the starting point of the arithmetic operation based on the supply and demand calendar using the read instruction value. 6. The electric energy metering system according to claim 1, wherein the used electric energy display terminal has an initialization means for initializing internal data. 7. The amount of electric power measured by an electronic watt-hour meter is read, and the amount of electric power used is calculated based on a supply and demand calendar that complies with a charge system in which the charge is set according to the time period in which the electric power is used, and is displayed for each time period. In the electric energy metering method, the electronic watt-hour meter stores the supply and demand calendar, and the electronic watt-hour meter determines the indicated value of the electric energy as the transaction instruction value which is the indicated value at the start of application of the tariff system. Then, by the electronic watt hour meter, the transaction instruction value information that is the information of the transaction instruction value is transmitted, the used power amount display terminal receives the transaction instruction value information, When the transaction instruction value information is received, the time when the transaction instruction value is confirmed is set as the starting point of the calculation based on the supply and demand calendar, and by the power consumption display terminal, Characterized in that display data for calculating the amount of electric power used from the starting point of the calculation based on the supply and demand calendar to display for each time zone is displayed, and the display data is displayed by the electric power consumption display terminal. How to measure electric energy. 8. The electronic watt-hour meter includes, as the supply and demand calendar storage means, an operation area in which an old supply and demand calendar, which is a supply and demand calendar before application of the charge system is stored, and a supply and demand calendar for the charge system. A new demand and supply calendar stored in the reservation area when the transaction instruction value is confirmed by the electronic watt hour meter, and a memory including a reservation area in which a certain new demand and supply calendar is stored. The operating area is rewritten with, the electronic watt hour meter transmits transaction instruction value information, which is information on the transaction instruction value, and the used power amount display terminal receives the transaction instruction value information, the use When the transaction instruction value information is received by the electric energy display terminal, the time when the transaction instruction value is confirmed is set as the starting point of the calculation based on the new supply and demand calendar. , Using the power consumption display terminal to create display data for calculating the power consumption from the starting point of the calculation based on the new supply and demand calendar of the operation area and displaying it by time zone, The electric energy measuring method according to claim 7, wherein the display data is displayed by a terminal. 9. The used power amount display terminal reads an indication value of a measured amount of electricity after setting a starting point of the calculation, and uses the read indication value to calculate the value based on the supply and demand calendar. The method for measuring electric energy according to claim 7, wherein the electric energy used is calculated from a starting point. 10. The power consumption display terminal, when the internal data is initialized, sets the fixed point of the transaction instruction value at the point closest to the point of initialization as the starting point of the calculation. The electric power amount measuring method according to claim 7, characterized in that. 11. An electronic watt-hour meter for measuring the amount of electric power, and a demand / supply calendar storing means for storing a demand / supply calendar according to a charge system in which a charge is set according to a time zone in which the electric power is used, and an instruction value of the amount of electric power. And a transaction instruction value information transmitting means for transmitting transaction instruction value information that is the information of the transaction instruction value. An electronic watt hour meter characterized in that 12. The supply and demand calendar storage means stores an operation area in which an old demand and supply calendar, which is a supply and demand calendar before application of the rate system is stored, and a new supply and demand calendar, which is a supply and demand calendar in the rate system. A memory including a reserved area, wherein when the transaction instruction value is confirmed by the transaction instruction value determining means, the operation area is rewritten by the new supply and demand calendar stored in the reservation area. The electronic watt hour meter according to claim 11. 13. The amount of electric power measured by an electronic watt-hour meter is read, and the amount of electric power used is calculated based on a supply and demand calendar that complies with a charge system in which a charge is set according to the time period in which the electric power is used, and is displayed for each time period. In the used power amount display terminal, a transaction instruction value information receiving unit for receiving transaction instruction value information, which is information of a transaction instruction value determined as an instruction value of the electric energy at the start of application of the fee system, and the transaction instruction value. When information is received, calculation starting point setting means for setting the time when the transaction instruction value is confirmed as the starting point of the calculation based on the supply and demand calendar, and the used electric energy based on the supply and demand calendar from the starting point of the calculation And display power generation means for generating display data for displaying by time zone, and used power amount display means for displaying the display data. Electric power consumption display terminal. 14. The electronic watt-hour meter has an instruction value reading means for reading an indicated value of the amount of electric power measured, and reads and reads the indicated value of the amount of electric power measured after setting the starting point of the calculation. The used power amount display terminal according to claim 13, wherein the used power amount is calculated from the starting point of the calculation based on the supply and demand calendar using the indicated value. 15. The power consumption display terminal according to claim 13, further comprising initialization means for initializing internal data. 16. An electronic watt-hour meter that measures the amount of electric power, and calculates the amount of electric power used for each time zone based on a metering pattern according to a rate system in which the electricity rate is set. A quantity measuring means, an indicator value confirming means for confirming an indicator value at the start of application of the new fee system, a current weighing pattern before application of the new fee system and an application start date of the current weighing pattern are stored. And a reserved area in which a new weighing pattern after the start of application of the new fee system and an application start date of the new weighing pattern are stored, and the indicated value is determined by the indicated value fixing means. When is confirmed, a weighing pattern storage means for storing the new weighing pattern stored in the reserved area and the application start date of the new weighing pattern in the operation area, Control means for controlling the calculation of the amount of power used for each time zone division using the measured amount of electric power based on the current measuring pattern or the new measuring pattern of the operation area at the time of measuring the amount of power. A characteristic electronic watt hour meter. 17. When the application start time is changed to a time before the application start time of the new fee system,
The electronic watt-hour meter according to claim 16, wherein the setting associated with the change is invalidated. 18. An electric energy metering method for an electronic watt-hour meter, which measures the amount of electric power and calculates the amount of electric power used for each time zone based on a metering pattern according to a rate system in which an electric rate is set. When the quantity is measured and the indicated value at the start of application of the new rate system is confirmed, the new measurement system is set to indicate the current measurement pattern before the application of the new rate system and the application start date of the current measurement pattern. Rewrite the new metering pattern after the start of application of the tariff system and the application start date of the new metering pattern, and based on the rewritten new metering pattern, calculate the amount of power used for each time zone using the metered amount of power. A method for measuring electric energy, characterized by calculating.