JP2023169994A - Selection method for power measurement device, program, and selection system for power measurement device - Google Patents

Abstract

To provide a selection method for a power measurement device, a program and a selection system for the power measurement device which can easily select an appropriate configuration of the power measurement device.SOLUTION: A selection system for a power measurement device comprises a first information terminal in which a program for making one or more computers execute a power measurement device selection method is installed, and a second information terminal which is connectable through communication with the first information terminal. The power measurement device selection method using a computer (for example, the first information terminal): receives input of information on rated current, voltage and a type of a phase wire system for each of a plurality of breakers installed in a board, on the basis of the information on the board in which the power measurement device is installed (S01); receives the input of instructions for selecting two or more breakers of a measurement object in which power is measured by the power measurement device among the plurality of breakers (S02); and selects a configuration of the power measurement device installed in the board, on the basis of the information and instructions received at a step S01 and a step S02 (S03).SELECTED DRAWING: Figure 2

Description

The present invention relates to a power measuring device selection method, a program, and a power measuring device selection system.

Conventionally, when introducing a system power meter, it is difficult to select the appropriate power meter and equipment depending on the circuit and environment to be measured, and users may accidentally purchase unnecessary products and equipment. . Therefore, there is a need for a method for easily selecting an appropriate configuration of a power meter.

For example, Patent Document 1 discloses a selection system that can select, with a simple operation, an appropriate product that satisfies required specifications for products made of drive components used in electric vehicles.

JP 2021-170215 Publication

The present invention provides a method and program for selecting a power measuring device that can easily select an appropriate configuration of the power measuring device.

A method for selecting a power measuring device according to one aspect of the present invention is a method for selecting a power measuring device using a computer, wherein the computer selects a power measuring device installed on the board based on information about the board on which the power measuring device is installed. accepts input of information on the rated current, voltage, and type of phase wire system of each of the plurality of breakers, and selects two or more of the breakers whose power is to be measured by the power measuring device among the plurality of breakers; The configuration of the power measuring device installed on the panel is selected based on the information and the instruction.

A program according to one aspect of the present invention is a program for causing one or more processors to execute the power measuring device selection method.

A power meter selection system according to one aspect of the present invention includes an input reception unit and a selection unit, and the input reception unit selects a power meter installed on the panel based on information about a panel on which the power meter is installed. accepts input of information on the rated current, voltage, and type of phase wire system of each of the plurality of breakers to be measured, and selects two or more of the breakers whose power is to be measured by the power measuring device among the plurality of breakers; Upon receiving an input of an instruction to select, the selection unit selects a configuration of the power measuring device installed on the panel based on the information and the instruction.

The present invention provides a method and program for selecting a power measuring device that can easily select an appropriate configuration of the power measuring device.

FIG. 1 is a block diagram illustrating an example of a functional configuration of a power measuring device selection system according to an embodiment. FIG. 2 is a flowchart illustrating an example of the operation of the power measuring device selection system according to the embodiment. FIG. 3 is a diagram showing an example of board information. FIG. 4 is a diagram showing an example of an input screen. FIG. 5 is a diagram showing an example of a display screen that displays the calculation result of the number of measurement units. FIG. 6 is a diagram showing an example of a display screen that displays the recalculation result of the number of measurement units. FIG. 7 is a diagram for explaining the heterogeneous system measurement unit. FIG. 8 is a diagram showing an example of a display screen that displays the selection of the rating of current transformers (CT) and the calculation results of the number of current transformers (CT). FIG. 9 is a diagram showing the type and voltage of the phase wire system of the circuit, and the number of CTs required for current measurement of the circuit. FIG. 10 is a diagram illustrating an example of a display screen that displays the selection result of the configuration of the power meter.

Hereinafter, embodiments will be specifically described with reference to the drawings. Note that the embodiments described below are all inclusive or specific examples. The numerical values, shapes, materials, components, arrangement positions and connection forms of the components, steps, order of steps, etc. shown in the following embodiments are merely examples, and do not limit the present invention. Further, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims will be described as arbitrary constituent elements.

Note that each figure is a schematic diagram and is not necessarily strictly illustrated. Furthermore, in each figure, substantially the same configurations are denoted by the same reference numerals, and overlapping explanations may be omitted or simplified.

(Embodiment)
[1. composition]
First, the configuration of the power measuring device selection system in the embodiment will be described. FIG. 1 is a block diagram illustrating an example of a functional configuration of a power measuring device selection system according to an embodiment.

The power meter selection system of the present disclosure includes at least an input reception unit that receives input from a user, and a selection unit that selects a configuration of a power meter installed on a panel. In the power meter selection system, the input reception unit receives information on the rated current, voltage, and type of phase wire type of each of the multiple breakers installed on the panel based on the information on the panel where the power meter is installed. The selection unit selects two or more breakers to be measured whose power is to be measured by a power meter from among the plurality of breakers, and the selection unit selects the panel based on the above information and instructions. Select the configuration of the power meter to be installed.

In the present embodiment, as shown in FIG. 1, a power meter selection system 100 includes, for example, a program for causing one or more computers to execute the power meter selection method according to the present embodiment. It includes an installed first information terminal 10 and a second information terminal 20 connectable to the first information terminal 10 via communication. Note that the example in FIG. 1 is just an example and is not limited thereto. For example, the power meter selection system 100 may not include the second information terminal 20.

[1-1. First information terminal 10]
The first information terminal 10 is, for example, an information terminal such as a computer or a tablet terminal used by a user. The user of the first information terminal 10 is, for example, an employee of a company that manufactures and sells power measuring instruments. The first information terminal 10 includes, for example, a communication section 11, an information processing section 12, a storage section 13, an input reception section 14, and a display section 15.

[Communication Department 11]
The communication unit 11 is a communication circuit (communication module) for communicating with the second information terminal 20. The communication unit 11 may include a communication circuit (communication module) for communicating via a local communication network, or may include a communication circuit (communication module) for communicating via a wide area communication network. Alternatively, both of these communication circuits may be provided. The communication unit 11 is, for example, a wireless communication circuit that performs wireless communication, but may also be a wired communication circuit that performs wired communication. Note that the communication standard for communication performed by the communication unit 11 is not particularly limited.

The communication unit 11 receives, for example, information and instructions input by the user of the second information terminal 20 and outputs them to the information processing unit 12. The information may be, for example, information on the panel in which the power meter is installed, or information on the rated current, voltage, and type of phase wire type of each of the multiple breakers installed on the panel. It's okay. Further, the instruction is, for example, an instruction to select two or more breakers to be measured whose power is to be measured by a power meter from among the plurality of breakers.

[Information processing unit 12]
The information processing unit 12 performs various information processing regarding the first information terminal 10. More specifically, for example, the information processing unit 12 acquires information and instructions input by the user and performs various information processing related to selection of the configuration of the power measuring device installed on the panel. For example, the information processing unit 12 selects the configuration of the power meter installed on the panel based on information about the panel on which the power meter is installed.

Specifically, the information processing section 12 includes a calculation section 12a and a selection section 12b. The functions of the calculation section 12a and the selection section 12b are realized by a processor or a microcomputer forming the information processing section 12 executing a computer program stored in the storage section 13.

The calculation unit 12a calculates the number of measurement units constituting the current measuring device based on the type of phase wire system and the voltage among the input information. More specifically, for example, in calculating the measurement units, the calculation unit 12a calculates the number of main units and the number of attached units. Further, for example, the calculation unit 12a further uses a heterogeneous system measurement unit having a main body unit capable of measuring the power of a plurality of breakers having different types of phase and wire systems by the input reception unit 14 as a configuration of the power measurement device. When the input of the instruction is accepted, the calculated number of main units is decreased by one, and the number of attached units is increased by one. For example, the calculation unit 12a further calculates the number of two or more current transformers (CTs) that constitute the power measuring device based on the type of phase wire system and the voltage among the input information. do.

The selection unit 12b selects the configuration of the power measuring device installed on the panel, for example, based on the information and instructions input by the input reception unit 14. The selection unit 12b selects the respective ratings of two or more current transformers (CT) constituting the power measuring device, for example, based on the rated current from among the information input by the input reception unit 14. Further, for example, when the input receiving unit 14 receives an input of an instruction to change the breaker to be measured after the configuration of the current measuring device is selected, the selection unit 12b changes the breaker to be measured according to the instruction. It's okay.

[Storage unit 13]
The storage unit 13 is a storage device in which control programs executed by the information processing unit 12 and the like are stored. The storage unit 13 is implemented, for example, by a HDD (Hard Disk Drive), but may also be implemented by a semiconductor memory.

[Input reception unit 14]
The input accepting unit 14 is an input interface that accepts operational inputs from a user using the first information terminal 10. Specifically, the input reception unit 14 is realized by a touch panel display or the like. For example, if the input reception unit 14 is equipped with a touch panel display, the touch panel display functions as the display unit 15 and the input reception unit 14. Note that the input receiving unit 14 is not limited to a touch panel display, and may be, for example, a keyboard, a pointing device (eg, a touch pen or a mouse), or a hardware button. Further, the input receiving unit 14 may be a microphone when accepting voice input.

[Display section 15]
The display unit 15 displays information to be presented to the user. For example, the information is a selection result of the configuration of the power meter. The display unit 15 is realized by, for example, a display panel such as a liquid crystal panel or an organic EL (Electro Luminescence) panel.

[1-2. Second information terminal 20]
The second information terminal 20 is connectable to the first information terminal 10 via communication, and is an information terminal such as a computer or a tablet terminal used by a user. The user of the second information terminal 20 is, for example, a purchaser who purchases a power meter.

For example, the second information terminal 20 transmits information and instructions input by the user to the first information terminal 10. The information may be, for example, information on the panel in which the power meter is installed, or information on the rated current, voltage, and type of phase wire type of each of the multiple breakers installed on the panel. It's okay. Further, the instruction is, for example, an instruction to select two or more breakers to be measured whose power is to be measured by a power meter from among the plurality of breakers. Further, for example, the second information terminal 20 may acquire the selection result of the configuration of the power measuring device transmitted from the first information terminal 10 and present it to the user.

Note that when the first information terminal 10 is, for example, a server device, the second information terminal 20 may be used by an employee of a company that manufactures and sells power measuring instruments, or may be used by a purchaser who purchases a power measuring device. may be done.

[2. motion]
Next, the operation of the power measuring device selection system according to the embodiment will be described. FIG. 2 is a flowchart illustrating an example of the operation of the power measuring device selection system 100 according to the embodiment.

The input reception unit 14 of the first information terminal 10 provides information on the rated current, voltage, and type of phase wire type of each of the plurality of breakers installed on the panel, based on information on the panel on which the power meter is installed. (S01).

Next, the input reception unit 14 receives an input of an instruction to select two or more measurement target breakers whose power is to be measured by a power meter from among the plurality of breakers (S02).

Next, the selection unit 12b selects the configuration of the power measuring device installed on the panel based on the information and instructions received by the input reception unit 14 in steps S01 and S02 (S03).

Next, the display unit 15 presents the configuration to the user by displaying the configuration of the power measuring device selected by the selection unit 12b in step S03 (S04).

Each step will be described in more detail below with reference to the drawings. In the following, the user of the first information terminal 10 (e.g., an employee of a manufacturer of power measuring instruments) will ask the user of the second information terminal 20 (e.g., a purchaser purchasing a power measuring instrument) what is necessary for selecting a power measuring instrument. An example will be explained in which a power measuring device to be installed on a panel is selected by acquiring such information.

For example, the user of the first information terminal 10 obtains data of a drawing (also referred to as a panel diagram) of a panel on which the power meter is installed or information about the panel from the user of the second information terminal 20 (not shown in FIG. 2). . The obtained board diagram data or board information is stored in the storage unit 13. FIG. 3 is a diagram showing an example of board information. As shown in FIG. 3, the board information includes, for example, the circuit number, phase wire type, voltage, number of breaker poles, rated current of the breaker, and load name.

When the user of the first information terminal 10 launches the power meter selection application, the display unit 15 displays an input screen. FIG. 4 is a diagram showing an example of an input screen. For example, when the user of the first information terminal 10 clicks on the "Measurement Unit" tab under "Calculation of Number of Measurement Units", the display unit 15 displays an input screen for inputting information necessary to calculate the number of measurement units. For example, the user may manually enter board information into the cells displayed on the input screen, or click the "File Load" button displayed on the input screen to send the board diagram data to the information processing unit 12. You can automatically input the board information from the board diagram data by loading the . Thereby, the input reception unit 14 receives input of information on the rated current, voltage, and type of phase wire type of each of the plurality of breakers (S01).

Next, when the user of the first information terminal 10 selects two or more breakers to be measured, the input reception unit 14 receives an instruction to select two or more breakers to be measured (S02). In the example of FIG. 4, when the user inputs a circle in the cell to be measured, the input receiving unit 14 receives an instruction to select the breaker corresponding to the circuit whose circuit number has been inputted as the measurement target. On the other hand, when the user inputs an "X" into a cell to be measured, the input receiving unit 14 receives an instruction not to select the breaker corresponding to the circuit whose circuit number has been entered as a measurement target. Note that the input accepting unit 14 may be configured to accept only an instruction to select a breaker to be measured.

Next, as shown in FIG. 4, when the user clicks on the "calculate" button, the input receiving section 14 receives an instruction to calculate the number of measurement units. The calculation unit 12a calculates the number of measurement units according to the instruction. FIG. 5 is a diagram showing an example of a display screen that displays the calculation result of the number of measurement units.

A power measuring instrument is composed of at least one measuring unit and two or more current transformers (CTs) for measuring the current of two or more breakers to be measured. Power can be measured. The measurement unit includes a main unit that has a communication function to communicate with an external terminal, and an accessory unit that does not have a communication function to communicate with an external terminal and is added to the main unit. For example, if the number of breakers to be measured exceeds the number of circuits that can be measured with one measurement unit (so-called main unit), the number of circuits that can be measured can be increased by adding an extension unit (so-called accessory unit). can be increased. If multiple breakers to be measured (more specifically, circuits corresponding to the breakers to be measured) have the same phase wire type and voltage, it is possible to measure the power of those circuits with one measurement unit. It is.

For example, if one measuring unit can measure up to four circuits, as shown in FIG. 5, the breakers corresponding to circuits numbered 2 to 8 can be measured by adding two additional units. The breaker corresponding to the circuit with circuit number 1 is the same type of phase wire type as the circuit breaker with circuit numbers 2 to 8, but because the voltage is different, it is measured with one measurement unit (here, the main unit). Ru. Moreover, since the breakers corresponding to the circuits with circuit numbers 9 to 12 have the same phase-wire type and voltage, they are measured by one measurement unit (here, the three-phase three-wire main unit). Note that the main unit has a function of managing data measured by the main unit and attached units. For example, in the example shown in Figure 5, the data measured by the single-phase three-wire measurement unit (main unit + two attached units) is output from the single-phase three-wire main unit to the external terminal via communication, and The data measured by the three-phase three-wire main unit is output to an external terminal via communication. Note that the maximum number of circuits that can be measured by one measurement unit is not limited to the above example, and may be set as appropriate depending on the design.

FIG. 6 is a diagram showing an example of a display screen that displays the recalculation result of the number of measurement units. For example, if the panel information input in step S02 of FIG. ) can be used or not. A measurement unit capable of measuring different types of systems can measure both single-phase and three-phase circuits with one measurement unit.

For example, if a heterogeneous system measurement unit is not used, the user clicks the "Confirm" button to confirm the calculation result of the number of measurement units; for example, when a heterogeneous system measurement unit is used, the user clicks the "Change" button to change the calculation result. ” button. When the input receiving unit 14 receives an instruction to change the calculation result, the display unit 15 displays a selection tool that allows the user to select whether or not to use a different type of system measurement unit. When the user clicks "Yes" on the selection tool, the input reception unit 14 receives an input of an instruction to use the heterogeneous system measurement unit as a configuration of the power measurement device. The calculation unit 12a recalculates the number of measurement units, reduces the calculated number of main units by one, and increases the number of attached units by one. At this time, the display unit 15 may display the recalculation results.

Here, a case where a heterogeneous system measurement unit is used and a case where it is not used will be explained. FIG. 7 is a diagram for explaining the heterogeneous system measurement unit. FIG. 7(a) is a diagram showing an example in which different types of measurement units are installed on one panel, and FIG. 7(b) is a diagram showing an example in which single-phase and three-phase measurement units are installed on different panels. FIG. A light panel is a panel that measures the power of a single-phase circuit, and a power panel is a panel that measures the power of a three-phase circuit.

For example, as shown in Figure 7(a), when the distance between the light panel and the power panel is relatively close (e.g., within 1 meter), a three-phase, three-wire accessory unit is placed on the power panel to reduce the voltage. The line and CT line may be routed to the light panel, but it is also possible to place an accessory unit for three-phase, three-wire on the light panel and connect the accessory unit for three-phase, three-wire to the main unit for single-phase, three-wire. . This is called a heterogeneous system measurement unit. The heterogeneous system measurement unit has a main unit that can measure the power of circuits corresponding to a plurality of breakers of different types of phase wire type. By using different types of system measurement units, both single-phase and three-phase circuits can be measured with one measurement unit, and the main unit for single-phase three-wire systems can manage measurement data and send measurement data to external terminals. It is also possible to output the following. Furthermore, since it is only necessary to have one main body unit, it is advantageous in terms of cost compared to the case where two main body units are used.

For example, as shown in FIG. 7(b), if the distance between the electric light panel and the power panel is relatively long (for example, several meters or more apart), the main unit for single-phase three-wire Place the three-phase three-wire main unit on the power panel. By arranging the main unit separately on the light panel and the power panel in this way, the measurement lines (voltage lines and CT lines) do not cross between these panels, making it easy to install the power meter.

FIG. 8 is a diagram showing an example of a display screen that displays the selection of the rating of current transformers (CT) and the calculation results of the number of current transformers (CT). In selecting the rating of the CT, the selection unit 12b selects the CT with the smallest rating among a plurality of ratings (specifically, CT ratings) that are equal to or higher than the breaker rated current and are equal to or higher than the breaker rated current.

For example, as shown in FIG. 8, when the user of the first information terminal 10 clicks the "CT" tab of "Selection/Quantity", the display unit 15 displays the CT rating (more specifically, the rated current). Displays the selection and number calculation screen. Next, when the user of the first information terminal 10 clicks on the "calculate" button, the input receiving unit 14 receives an instruction to select a CT rating and calculate the number of CTs. Next, the selection unit 12b selects the rating of the CT for current measurement based on the breaker rated current of each circuit. For example, if the breaker current ratings are 30A and 50A, the CT rating is 50A and the CT standard (eg, product number) is CT50A. Further, for example, when the breaker rated current is 100A, the CT rating is 100A, and the CT standard (product number) is CT100A. Further, for example, when the breaker rated current is 225A, the CT rating is 250A, and the CT standard (product number) is CT250A.

FIG. 9 is a diagram showing the type and voltage of the phase wire system of the circuit, and the number of CTs required for current measurement of the circuit. The calculation unit 12a calculates the number of CTs required for current measurement of each circuit based on the type of phase wire system and voltage of each circuit (see FIG. 9). As shown in Figure 9, when the circuit to be measured is single-phase two-wire or single-phase three-wire and has one type of voltage (for example, 100V or 200V), the number of CTs required to measure the current of the circuit is 1. It is one. Further, when the circuit to be measured is a single-phase three-wire circuit with two types of voltage (100V and 200V), two CTs are required to measure the current of the circuit. Furthermore, when the circuit to be measured is a three-phase, three-wire circuit, two CTs are required to measure the current of the circuit.

Next, the display unit 15 displays the rating of the selected CT and the number of CTs of each rating.

FIG. 10 is a diagram illustrating an example of a display screen that displays the selection result of the configuration of the power meter. When the user of the first information terminal 10 clicks the "Power meter configuration" tab under "Result output", the display unit 15 displays the selection result of the power meter configuration. At this time, if a different type of system measurement unit is used, a message to that effect may be displayed.

When the user of the first information terminal 10 clicks the "print" button, the selection results are printed. Furthermore, when the user of the first information terminal 10 clicks the "save" button, the data of the selection results is saved. The first information terminal 10 may transmit the selection result data to the second information terminal 20.

[3. Effects, etc.]
As explained above, the power meter selection method according to the embodiment is a power meter selection method using a computer (for example, the first information terminal 10), in which the computer is installed with the power meter. Based on the information on the panel, the input of information on the rated current, voltage, and type of phase wire system for each of the multiple breakers installed on the panel is accepted (S01). Accepting input of an instruction to select two or more breakers to be measured (S02), and selecting the configuration of the power measuring device installed on the panel based on the information and instructions accepted in step S01 and step S02. (S03).

In such a power measuring device selection method, an appropriate configuration of the power measuring device installed on the panel can be easily selected based on the panel information and the selection instruction of the breaker to be measured.

For example, in the power measuring device selection method according to the embodiment, the computer (for example, the first information terminal 10) performs power measurement based on the type of phase wire system and the voltage among the input information. Calculate the number of measurement units that make up the device.

Such a method for selecting a power measuring device can appropriately calculate the number of measuring units based on the type and voltage of the phase wire type of each of the plurality of breakers installed on the panel. Therefore, the method for selecting a power meter can reduce erroneously purchasing unnecessary measurement units.

For example, in the power measuring device selection method according to the embodiment, the power measuring device includes at least one measuring unit and two or more current transformers for measuring the current of two or more measurement target breakers. Then, the computer (for example, the first information terminal 10) selects the respective ratings of the two or more current transformers constituting the power measuring device based on the rated currents from among the input information.

This method of selecting a power measuring device involves selecting an appropriate rating for each of two or more current transformers (CTs) that make up the power measuring device, based on the rated current of each of the multiple breakers installed on the panel. can do. Therefore, the method for selecting a power meter can reduce erroneously purchasing unnecessary CTs.

For example, in the power measuring device selection method according to the embodiment, the computer (for example, the first information terminal 10) further selects two types of information based on the type of phase wire type and the voltage among the input information. Calculate the number of current transformers above.

This method of selecting a power measuring device is based on the phase wire type and voltage of each of the multiple breakers installed on the panel, and the selection method of each of the two or more current transformers (CTs) that make up the power measuring device. Appropriate ratings can be selected. Therefore, the method for selecting a power meter can reduce erroneously purchasing unnecessary CTs.

For example, in the power meter selection method according to the embodiment, after the configuration of the power meter is selected, the computer (for example, the first information terminal 10) issues an instruction to change the breaker of the selected measurement target. When the input is accepted, the breaker to be measured is changed according to the instruction.

This method of selecting a power measuring device involves changing the breaker to be measured even after the configuration of the power measuring device has been selected, and selecting an appropriate configuration of the power measuring device based on the changed information. Can be done.

For example, in the power measuring device selection method according to the embodiment, the measurement unit includes a main unit that has a communication function to communicate with an external terminal, and a main unit that does not have a communication function to communicate with an external terminal, and a main unit that does not have a communication function to communicate with an external terminal. In calculating the number of measurement units, the computer (for example, the first information terminal 10) calculates the number of main units and the number of accessory units.

This method of selecting a power meter can appropriately calculate the number of main units and the number of attached units based on the type and voltage of the phase wire system of each of the multiple breakers installed on the panel. . Therefore, the method for selecting a power meter can reduce erroneously purchasing unnecessary measurement units.

For example, in the power measuring device selection method according to the embodiment, the computer (for example, the first information terminal 10) further includes a main unit that can measure the power of a plurality of breakers of different types of phase wire type. When receiving an input of an instruction to use a different type of system measuring unit as a configuration of a power measuring instrument, the calculated number of main units is decreased by one, and the calculated number of attached units is increased by one.

This method of selecting a power measuring device allows the user to select whether or not to use a different type of system measuring unit, for example, depending on how the panels are installed at the site (for example, the distance between the light panel and the power panel). can. Therefore, the method for selecting a power meter can easily select an appropriate configuration of the power meter in accordance with the user's request.

Further, the program according to the embodiment is a program for causing one or more processors to execute any of the above-described methods for selecting a power measuring device.

By being executed by one or more processors, such a program can easily configure the appropriate power metering equipment installed in the panel based on panel information and instructions for selecting the breaker to be measured. can be selected.

Further, the power measuring device selection system 100 according to the embodiment includes an input receiving unit 14 and a selecting unit 12b, and the input receiving unit 14 selects a board based on information about the board on which the power measuring device is installed. Accepts input of information on the rated current, voltage, and type of phase wire system for each of multiple breakers installed in Upon receiving the input of the selection instruction, the selection section 12b selects the configuration of the power meter installed on the panel based on the information and instruction received by the input reception section 14.

Such a power measuring device selection system 100 can easily select an appropriate configuration of the power measuring device installed on the panel based on the panel information and the selection instruction of the breaker to be measured.

(Other embodiments)
Although the embodiments have been described above, the present invention is not limited to the above embodiments.

Further, in the above embodiments, the power measuring device selection system is realized by a plurality of devices, but it may be realized by a single device. When the power meter selection system is implemented by a plurality of devices, the components included in the system may be distributed to the plurality of devices in any manner.

Further, for example, the communication method between devices in the above embodiment is not particularly limited. Further, in communication between devices, a relay device (not shown) may intervene.

Further, in the above embodiments, the processing executed by a specific processing unit may be executed by another processing unit. Further, the order of the plurality of processes may be changed, or the plurality of processes may be executed in parallel.

Furthermore, in the embodiments described above, each component may be realized by executing a software program suitable for each component. Each component may be realized by a program execution unit such as a CPU or a processor reading and executing a software program recorded on a recording medium such as a hard disk or a semiconductor memory.

Moreover, each component may be realized by hardware. For example, each component may be a circuit (or integrated circuit). These circuits may constitute one circuit as a whole, or may be separate circuits. Further, each of these circuits may be a general-purpose circuit or a dedicated circuit.

Further, general or specific aspects of the present invention may be implemented in a system, apparatus, method, integrated circuit, computer program, or computer readable storage medium such as a CD-ROM. Further, the present invention may be realized by any combination of a system, an apparatus, a method, an integrated circuit, a computer program, and a recording medium.

For example, the present invention may be realized as a computer according to the embodiment described above or a power measuring device selection system corresponding thereto. Further, the present invention may be realized as a power meter selection method executed by a computer such as a power meter selection system, or as a program for causing a computer to execute such a power meter selection method. May be realized. The present invention may be realized as a computer-readable non-transitory recording medium on which such a program is recorded.

Other embodiments may be obtained by making various modifications to each embodiment that a person skilled in the art would think of, or may be realized by arbitrarily combining the components and functions of each embodiment without departing from the spirit of the present invention. The present invention also includes such forms.

10 First information terminal 12a Calculation unit 12b Selection unit 14 Input reception unit 100 Power meter selection system

Claims (9)

A method for selecting a power measuring device using a computer, the method comprising:
The computer includes:
Based on the information of the panel on which the power meter is installed, accepts input of information on the rated current, voltage, and phase wire type type of each of the plurality of breakers installed on the panel,
Accepting an input of an instruction to select two or more measurement target breakers whose power is to be measured by the power measuring device among the plurality of breakers;
selecting a configuration of the power measuring device installed on the panel based on the information and the instruction;
How to choose a power meter. The computer includes:
calculating the number of measurement units configuring the power measuring device based on the type of the phase wire system and the voltage among the information whose input is accepted;
The method for selecting a power measuring device according to claim 1. The power measuring device includes at least one measuring unit and two or more current transformers for measuring current of the two or more breakers to be measured,
The computer includes:
selecting a rating for each of the two or more current transformers constituting the power measuring device based on the rated current from among the information whose input is accepted;
The method for selecting a power measuring device according to claim 2. The computer includes:
Further, calculating the number of the two or more current transformers based on the type of the phase wire system and the voltage among the information whose input is accepted;
The method for selecting a power measuring device according to claim 3. The computer includes:
After the configuration of the power meter is selected, upon receiving an input of an instruction to change the selected measurement target breaker, changing the measurement target breaker according to the instruction;
The method for selecting a power measuring device according to claim 1. The measurement unit includes a main unit that has a communication function to communicate with an external terminal, and an accessory unit that does not have a communication function to communicate with the external terminal and is added to the main unit,
In calculating the number of measurement units, the computer calculates the number of main units and the number of attached units;
The method for selecting a power measuring device according to claim 2. The computer includes:
Furthermore, upon receiving an input of an instruction to use a heterogeneous system measurement unit having a main body unit capable of measuring the power of a plurality of breakers having different types of phase wire systems as a configuration of the power measuring instrument, the calculated main body reducing the number of units by one and increasing the number of the attached units by one;
The method for selecting a power measuring device according to claim 6. A program for causing one or more processors to execute the method for selecting a power measuring device according to any one of claims 1 to 6. Equipped with an input reception section and a selection section,
The input reception unit is
Based on the information of the panel on which the power meter is installed, accepts input of information on the rated current, voltage, and phase wire type type of each of the plurality of breakers installed on the panel,
Accepting an input of an instruction to select two or more measurement target breakers whose power is to be measured by the power measuring device among the plurality of breakers;
The selection unit selects a configuration of the power meter installed on the panel based on the information and the instruction.
Power meter selection system.

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