JP2023083026A - Power system, power measurement system, distribution board, and program - Google Patents

Abstract

To allow a user to easily determine an installation state of a current measurement section.SOLUTION: A power system 1 comprises an acquisition section 11 and a presentation system 19. The acquisition section 11 acquires measurement results of a voltage measurement section 7 for measuring the voltage between a plurality of electric wires 3 and a current measurement section 8 for measuring a current flowing through each of the plurality of electric wires 3 as voltage and current information 21. The presentation system 19 presents the information. The presentation system 19 includes a display section 191. The display section 191 displays a vector diagram on the basis of the voltage and current information 21 acquired in the acquisition section 11. The vector diagram indicates a relationship between a phase of the voltage between the plurality of electric wires 3 and a phase of the current flowing through each of the plurality of electric wires 3.SELECTED DRAWING: Figure 1

Description

The present disclosure relates generally to power systems, power metering systems, distribution boards and programs. More specifically, the present disclosure includes a power system using measurement results of voltage and current, a power measurement system for measuring voltage and current, a distribution board including the power system or the power measurement system, and voltage and current It relates to a program using the measurement result of

As a conventional example, the determination system described in Patent Document 1 is cited. The determination system includes an acquisition unit and a determination unit. The acquisition unit acquires voltage/current information for calculating power consumption from the voltage measurement unit and the current measurement unit. The determination unit determines the installation status of the current measurement unit based on the voltage/current information acquired by the acquisition unit. When the installation status is abnormal, the determination unit determines the installation status by distinguishing between a first status and a second status. The first situation is a situation in which incorrect installation of the current measuring unit can be dealt with by changing the setting for calculating the power consumption based on the voltage and current information. The second situation is a situation in which the above measures cannot be taken.

Japanese Patent Application Laid-Open No. 2021-081219

An object of the present disclosure is to provide a power system, a power measurement system, a distribution board, and a program that make it easier for a user to determine the installation status of a current measurement unit.

A power system according to an aspect of the present disclosure includes an acquisition unit and a presentation system. The acquisition unit acquires measurement results of a voltage measurement unit that measures voltage between a plurality of wires and a current measurement unit that measures a current flowing through each of the plurality of wires as voltage/current information. The presentation system presents information. The presentation system includes a display. The display unit displays a vector diagram based on the voltage/current information acquired by the acquisition unit. The vector diagram shows the relationship between the phase of the voltage between the plurality of wires and the phase of the current flowing through each of the plurality of wires.

A power measurement system according to an aspect of the present disclosure includes the acquisition unit of the power system. The power measurement system further includes the voltage measurement section and the current measurement section.

A distribution board according to an aspect of the present disclosure includes the power system or the power measurement system, and a cabinet. The cabinet houses at least part of the power system or the power metering system.

A program according to one aspect of the present disclosure is a program for causing one or more processors of a computer system to perform an acquisition process and a display process. In the acquisition process, measurement results of a voltage measurement unit that measures voltage between a plurality of wires and a current measurement unit that measures a current flowing through each of the plurality of wires are acquired as voltage/current information. In the display process, a vector diagram is displayed based on the voltage/current information acquired in the acquisition process. The vector diagram shows the relationship between the phase of the voltage between the plurality of wires and the phase of the current flowing through each of the plurality of wires.

The present disclosure has an advantage that the user can easily determine the installation status of the current measurement unit.

FIG. 1 is a block diagram of a power system according to Embodiment 1 and a facility to which the power system is applied. FIG. 2 is an example of a vector diagram displayed in the same power system. FIG. 3 is another example of a vector diagram displayed in the same power system. FIG. 4 is a front view of a distribution board used with the same power system. FIG. 5 is a flowchart showing an example of a procedure of determination processing in the electric power system. FIG. 6 is a flow chart showing an example of a procedure of mounting orientation confirmation processing in the electric power system. FIG. 7 is a flow chart showing an example of a processing procedure of combination confirmation processing in the electric power system. FIG. 8 is a block diagram of a power system according to Embodiment 2. FIG.

In each embodiment below, a power system, a power measurement system, a distribution board, and a program according to the present disclosure will be described with reference to the drawings. However, each embodiment described below is only a part of various embodiments of the present disclosure. Each of the embodiments described below can be modified in various ways according to design and the like as long as the object of the present disclosure can be achieved. Also, each drawing described in each embodiment below is a schematic drawing, and the ratio of the size and thickness of each component in the drawing does not necessarily reflect the actual dimensional ratio. do not have. Further, the flowcharts shown in FIGS. 5 to 7 merely show an example of the processing procedure of the electric power system, and the order of processing may be changed as appropriate, and processing may be added or omitted as appropriate. Further, each of the following embodiments (including modified examples) may be combined as appropriate and implemented.

(Embodiment 1)
(overview)
As shown in FIG. 1 , the power system 1 of this embodiment includes an acquisition unit 11 and a presentation system 19 . The acquisition unit 11 converts the measurement results of the voltage measurement unit 7 that measures the voltage between the plurality of wires 3 and the current measurement unit 8 that measures the current flowing through each of the plurality of wires 3 into voltage and current information. 21. The presentation system 19 presents information. Presentation system 19 includes display 191 . The display unit 191 displays a vector diagram based on the voltage/current information 21 acquired by the acquisition unit 11 . The vector diagram shows the relationship between the phase of the voltage between the multiple wires 3 and the phase of the current flowing through each of the multiple wires 3 .

2 and 3 are examples of vector diagrams displayed on the display unit 191. FIG. According to the present embodiment, the display unit 191 displays the relationship between the phase of the voltage and the phase of the current in the form of a vector diagram. is easy to determine the installation status of the current measuring unit 8. Therefore, the user is likely to notice incorrect installation of the current measuring unit 8 or the like.

Also, the program of the present embodiment is a program for causing one or more processors of a computer system to execute an acquisition process and a display process. In the acquisition process, the measurement results of the voltage measurement unit 7 that measures the voltage between the multiple wires 3 and the current measurement unit 8 that measures the current flowing through each of the multiple wires 3 are acquired as the voltage/current information 21 . In the display process, a vector diagram is displayed based on the voltage/current information 21 acquired in the acquisition process. The vector diagram shows the relationship between the phase of the voltage between the multiple wires 3 and the phase of the current flowing through each of the multiple wires 3 . In this embodiment, the acquisition unit 11 executes acquisition processing, and the display processing unit 13 executes display processing.

The program may be recorded on a computer-readable non-transitory recording medium.

(detail)
(1) Overall Configuration Hereinafter, the power system 1 of the present embodiment and each configuration related to the power system 1 will be described in more detail.

In this embodiment, a case in which the voltage measurement unit 7 and the current measurement unit 8 are installed in a consumer facility will be described as an example. Consumer facilities are, for example, residences such as detached houses and collective housing, or non-residential facilities such as offices, multi-tenant buildings, factories, and public facilities. The consumer facility may be a facility that receives power supply from an electric power company such as an electric power company, or a facility that receives power supply from a private power generation facility such as a solar power generation facility. It may be a facility that receives power supply from both a business operator and an in-house power generation facility.

The consumer facility includes, for example, a power system 1 and a distribution board 4 . However, at least part of the configuration of the power system 1 may be provided outside the customer facility. At least part of the configuration of the power system 1 may be provided in a computer server. At least part of the configuration of the power system 1 may be provided in the distribution board 4 .

The consumer facility receives power supply from an AC power supply 2 such as a commercial power system. Electric power supplied from an AC power supply 2 is received by a distribution board 4 and supplied to a load or the like via a branch circuit 6 .

(2) AC Power Supply As shown in FIG. 1, in the present embodiment, a three-phase four-wire power distribution system of the AC power supply 2 will be described as an example. The power distribution system of the AC power supply 2 is not limited to the three-phase four-wire system, and may be, for example, a three-phase three-wire system, a single-phase two-wire system, or a single-phase three-wire system.

Four electric wires 3 are provided in the consumer facility. Four electric wires 3 are electrically connected to an AC power supply 2 . The four electric wires 3 include an R-phase electric wire 3R, an S-phase electric wire 3S, a T-phase electric wire 3T, and an N-phase electric wire (neutral wire) 3N.

Four electric wires extending from the AC power supply 2 are electrically connected to four primary terminals 51 of the main breaker 5, which will be described later, and four electric wires are connected to four secondary terminals 52 of the main breaker 5. are electrically connected. In this embodiment, the primary side wire of the main breaker 5 and the secondary side wire electrically connected to the primary side wire are collectively defined as one wire 3 . That is, the four electric wires on the primary side of the main breaker 5 and the four electric wires on the secondary side are collectively defined as the four electric wires 3 .

(3) Distribution board As shown in FIG. 1, the distribution board 4 includes a main breaker 5, a plurality of branch circuits 6, a voltage measuring unit 7, and a plurality of (three in FIG. 1) current measuring units 8. And prepare. The distribution board 4 also includes a cabinet 9 (see FIG. 4).

The master breaker 5 includes four primary terminals 51 and four secondary terminals 52 . The multiple primary terminals 51 are electrically connected to the AC power supply 2 via multiple electric wires 3 . The multiple secondary terminals 52 are electrically connected to the multiple branch circuits 6 via the multiple electric wires 3 .

The multiple branch circuits 6 include a first branch circuit 6a, a second branch circuit 6b, and a third branch circuit 6c. The first branch circuit 6a is electrically connected to the electric wire 3R and the electric wire 3N. The second branch circuit 6b is electrically connected to the electric wire 3S and the electric wire 3N. The third branch circuit 6c is electrically connected to the electric wire 3T and the electric wire 3N.

The branch circuit 6 includes branch breakers, wiring paths, wiring devices (outlets, wall switches, etc.), and various devices (motors, lighting fixtures, loads such as computer systems and home appliances, or storage batteries). Wireways, wiring fittings and various devices are electrically connected to the secondary side of the branch breaker. Note that, unlike FIG. 1, at least one of the first branch circuit 6a, the second branch circuit 6b, and the third branch circuit 6c may be provided in plurality.

One branch circuit 6 of the plurality of branch circuits 6 supplies power to the power system 1 .

The voltage measurement unit 7 measures phase voltages, for example. That is, the voltage measuring unit 7 measures the voltage V1 between the electric wires 3R and 3N, the voltage V2 between the electric wires 3S and 3N, and the voltage V3 between the electric wires 3T and 3N. Here, voltage V1, voltage V2, and voltage V3 are three-phase AC voltages with phase angles different from each other by 120 degrees. The voltage measurement unit 7 outputs voltage information about the measured voltages V1 to V3 to the acquisition unit 11 of the electric power system 1 . The voltage information includes information on the voltage values and phases of voltage V1, voltage V2, and voltage V3, and information on measurement time.

As each of the plurality of current measurement units 8, for example, a CT (Current Transformer) sensor, a Hall element, a magnetoresistive element such as a GMR (Giant Magnetic Resistances) element, or a shunt resistor is used. In the present embodiment, a case where each of the plurality of current measurement units 8 is a CT sensor will be described as an example.

The multiple current measurement units 8 include a current measurement unit 8a, a current measurement unit 8b, and a current measurement unit 8c. In this embodiment, the current measured by the current measuring unit 8a is called the current I1, the current measured by the current measuring unit 8b is called the current I2, and the current measured by the current measuring unit 8c is called the current I3. In FIG. 1, the current measuring unit 8a measures the current flowing through the wire 3R, the current measuring unit 8b measures the current flowing through the wire 3S, and the current measuring unit 8c measures the current flowing through the wire 3T. However, in the present disclosure, it is also assumed that at least some of the current measurement units 8 are installed by mistake. For example, it is assumed that the current measurement unit 8c measures the current flowing through the wire 3R and the current measurement unit 8a measures the current flowing through the wire 3T. In such a case, the current I3 is the measured value of the current flowing through the wire 3R, and the current I1 is the measured value of the current flowing through the wire 3T.

The plurality of current measurement units 8 outputs current information about the measured currents I1 to I3 to the acquisition unit 11 of the electric power system 1 . The current information includes information on current values and phases of the currents I1, I2 and I3, and information on measurement times.

Note that, unlike FIG. 1, for example, when a plurality of first branch circuits 6a are connected in parallel as circuits electrically connected to the electric wires 3R and 3N, the current flowing through each first branch circuit 6a It is preferable to install the current measurement unit 8 at a location where the branch current can be measured. When a plurality of second branch circuits 6b are connected in parallel as circuits electrically connected to the electric wires 3S and 3N, and when a plurality of third branch circuits 6b are connected in parallel as circuits electrically connected to the electric wires 3T and 3N The same applies when the branch circuits 6c are connected in parallel.

FIG. 4 illustrates each configuration of the cabinet 9 of the distribution board 4 and the main breaker 5 and the like accommodated in the cabinet 9 . 4 shows an example of the configuration of the distribution board 4, and the arrangement, shape, etc. of the master breaker 5 and the like are not limited to FIG. In addition, in the following description, each configuration of the distribution board 4 will be described using the vertical, horizontal, and front/rear directions, but the usage direction of the distribution board 4 is not particularly limited.

The shape of the cabinet 9 is rectangular parallelepiped. The distribution board 4 has a first mounting member 41, a second mounting member 42, two frames 43, and four conductive bars 44 (only one is shown in FIG. 4). These are arranged inside the cabinet 9 .

The first mounting member 41 and the second mounting member 42 are metal plates. The planar view shape of the 1st attachment member 41 and the 2nd attachment member 42 is a rectangular shape.

The two frames 43 are made of metal. The two frames 43 are formed in a rod shape along the vertical direction. The two frames 43 are arranged to face each other with a gap in the left-right direction. The first mounting member 41 and the second mounting member 42 are mounted across the two frames 43 . The first mounting member 41 and the second mounting member 42 are fixed to the two frames 43 with screws, for example.

The main breaker 5 is attached to the first attachment member 41 . A branch breaker 61 for each of the plurality of branch circuits 6 is attached to the second attachment member 42 .

The four conductive bars 44 are arranged at intervals in the front-rear direction. The four conductive bars 44 are in one-to-one correspondence with the four electric wires 3 . Each electric wire 3 is electrically connected to a branch breaker 61 via a corresponding conductive bar 44 .

(4) Power System The power system 1 includes a computer system having one or more processors and memory. At least part of the functions of the power system 1 are realized by the processor of the computer system executing a program recorded in the memory of the computer system. The program may be recorded in memory, may be provided through an electric communication line such as the Internet, or may be recorded and provided in a non-temporary recording medium such as a memory card.

As shown in FIG. 1 , the power system 1 includes a processing unit 10 , a communication unit 17 , a storage unit 18 and a presentation system 19 .

(4.1) Communication Unit The communication unit 17 includes a communication interface device. The communication unit 17 can communicate with the voltage measurement unit 7 and the plurality of current measurement units 8 via the communication interface device. “Communicable” as used in the present disclosure means that a signal can be sent and received directly or indirectly via a network, a repeater, or the like, by an appropriate communication method such as wired communication or wireless communication. The communication unit 17 acquires voltage information from the voltage measurement unit 7 and acquires current information from the plurality of current measurement units 8 .

(4.2) Storage Unit The storage unit 18 is a nonvolatile storage device configured by a hard disk drive (HDD), solid state drive (SSD), or the like. The storage unit 18 stores programs, data, and the like. For example, the storage unit 18 stores voltage/current information 21, setting information 22, calculated value information 23, and the like.

The voltage/current information 21 includes voltage information about the voltages V1 to V3 measured by the voltage measuring unit 7 and current information about the currents I1 to I3 measured by the plurality of current measuring units 8 .

The calculated value information 23 is information about the power supplied from the plurality of electric wires 3 to the power supply destination. The calculated value information 23 is calculated by the second calculator 122, which will be described later. In this embodiment, power is supplied to various devices (loads or storage batteries) provided in the plurality of branch circuits 6 . Below, the power supplied to the power supply destination is also referred to as supplied power. Further, in the following description, it is assumed that the power supply destination is the load, so the supplied power is the power consumed by the load. The calculated value information 23 may include information about the power amount obtained by time-integrating the supplied power.

The setting information 22 is information relating to calculation settings when the second calculator 122 calculates the power to be supplied to the power supply destination (each branch circuit 6 ) based on the voltage/current information 21 . For example, the setting information 22 is information representing the relationship between the current measuring units 8a, 8b, 8c and the R, S, and T phases. The current measured by the current measurement unit 8 associated with the R phase by the setting information 22 is multiplied by the voltage V1 by the second calculation unit 122, thereby calculating the power of the R phase. The current measured by the current measurement unit 8 associated with the S phase by the setting information 22 is multiplied by the voltage V2 by the second calculation unit 122, thereby calculating the power of the S phase. The current measured by the current measuring unit 8 associated with the T-phase by the setting information 22 is multiplied by the voltage V3 by the second calculating unit 122, thereby calculating the power of the T-phase. Therefore, the setting information 22 is also information for determining combinations of the voltages V1 to V3 and the currents I1 to I3 for calculating the power supply.

(4.3) Presentation System The presentation system 19 includes a display section 191 , a judgment presentation section 192 , a judgment presentation section 193 , a power presentation section 194 and an operation section 195 .

The display unit 191 displays a vector diagram showing the relationship between the phase of the voltage between the plurality of wires 3 and the phase of the current flowing through each of the plurality of wires 3 based on the command from the display processing unit 13 (FIGS. 2 and 3). See Figure 3). The display unit 191 has, for example, a display, and displays a vector diagram on the display.

The judgment presentation unit 192 presents the judgment result of the judgment unit 14, which will be described later. The determination result of the determination unit 14 is a determination result regarding the installation status of the plurality of current measurement units 8 . The judgment presenting unit 192 has, for example, a display, and displays the judgment result on the display. "Display" is one aspect of presentation.

The judgment presentation unit 193 presents the judgment result of the judgment unit 15, which will be described later. The determination result of the determination unit 15 is a determination result regarding a method of coping with an abnormal installation state of at least one current measurement unit 8 . The determination presenting unit 193 has, for example, a display, and presents the determination results on the display. "Display" is one aspect of presentation.

The power presenting unit 194 presents information about the power (supplied power) to be supplied from the plurality of electric wires 3 to the power supply destination, which is calculated by the second calculating unit 122 to be described later. The information may include information on the amount of power supplied from the plurality of electric wires 3 to the power supply destination. The power presentation unit 194 has, for example, a display and presents information on the display. "Display" is one aspect of presentation.

Two or more of the display unit 191, the judgment presentation unit 192, the judgment presentation unit 193, and the power presentation unit 194 may be configured by one display. Further, for example, the screen of the display may be divided into a plurality of areas, and as shown in FIG. 3, a part of the area may be used as the display section 191 for displaying the vector diagram. Furthermore, as shown in FIG. 3, another part of the area is used as a judgment presentation part 192 that displays the judgment result, and another part of the area is used as a judgment presentation part 193 that displays the judgment result. good too. Furthermore, another partial area may be used as the power presentation unit 194 that displays information about power. Alternatively, the information displayed on the display may be alternately switched between the vector diagram, the determination result, the determination result, and the power information according to the operation of the operation unit 195 .

Further, the determination presenting unit 192, the determination presenting unit 193, and the power presenting unit 194 are not limited to the configurations that visually display the determination result, the determination result, and the information regarding power. The judgment presenting unit 192, the judgment presenting unit 193, and the power presenting unit 194 may output, for example, the judgment result, the judgment result, and the information about the power by sound (including voice). Sound output is one mode of presentation. At least one of the determination presentation unit 192, the determination presentation unit 193, and the power presentation unit 194 may have a speaker, buzzer, or the like for realizing output by sound.

The operation unit 195 accepts user's operations. The operation unit 195 has, for example, buttons, a pointing device, a touch panel, a touch panel display, or the like. The presentation system 19 presents information according to the operation of the operation unit 195 . For example, when a specific operation is performed on the operation unit 195, the display unit 191 displays a vector diagram.

Since the presentation system 19 not only presents the determination result and the determination result but also displays the vector diagram, the user can judge from the vector diagram whether the determination result and the determination result are reliable.

(4.4) Processor The processor 10 includes one or more processors. Processing unit 10 includes acquisition unit 11 , first calculation unit 121 , second calculation unit 122 , display processing unit 13 , determination unit 14 , determination unit 15 , and change unit 16 . It should be noted that these merely indicate the functions realized by the processing unit 10 and do not necessarily indicate a substantial configuration.

The acquisition unit 11 acquires voltage/current information 21 from the voltage measurement unit 7 and the plurality of current measurement units 8 . The acquisition unit 11 acquires the voltage/current information 21 via the communication unit 17 by wire or wirelessly. The acquisition unit 11 causes the storage unit 18 to store the acquired voltage/current information 21 . The voltage/current information 21 is information used when the power system 1 calculates the power to be supplied to each branch circuit 6 and when determining the installation status of the plurality of current measuring units 8 .

The installation status is, for example, whether or not each current measuring unit 8 is installed at a position where the current flowing through the wire 3 can be measured, where each current measuring unit 8 is installed, and each current measuring unit At least one of the information about which direction 8 is installed is included.

The first calculator 121 calculates the phases of the voltages V1 to V3 and the phases of the currents I1 to I3 based on the voltage/current information 21 acquired by the acquirer 11 .

The second calculator 122 calculates the power supply based on the voltage/current information 21 acquired by the acquirer 11 . Depending on the setting information 22, combinations of the voltages V1 to V3 and the currents I1 to I3 that are referred to when the second calculator 122 calculates the power to be supplied are determined.

The display processing unit 13 causes the display unit 191 of the presentation system 19 to display the vector diagram.

The determination unit 14 determines the installation status of the plurality of current measurement units 8 based on the voltage/current information 21 acquired by the acquisition unit 11 . The details of the determination method by the determination unit 14 will be described later.

The determination unit 15 determines a method of coping with the abnormality based on the voltage/current information 21 when the determination unit 14 determines that the installation status of at least one current measurement unit 8 is abnormal.

The changing unit 16 changes settings related to calculation of power (supplied power) supplied from the plurality of electric wires 3 to power supply destinations based on the determination result of the determining unit 15 .

When the determination unit 14 determines that the installation status of at least one current measurement unit 8 is abnormal, the determination unit 15 performs determination processing for determining how to deal with the installation status abnormality. In the determination process, the determination unit 15 determines the installation status of the plurality of current measurement units 8 by distinguishing between the first status and the second status. The first situation is an installation situation of the current measurement units 8 in which incorrect installation of a plurality of current measurement units 8 can be dealt with by changing the setting information 22 . The second situation is an installation situation of the current measuring units 8 in which it is impossible to deal with incorrect installation of the plurality of current measuring units 8 by changing the setting information 22 . For example, in the case of erroneous installation in which the mounting direction of one of the current measurement units 8 is incorrect, the second calculation unit 122 calculates by multiplying the current measurement value corresponding to the current measurement unit 8 by -1. Correct supply power can be calculated. In other words, by changing the setting information 22 regarding the mounting direction of the corresponding current measuring unit 8, it is possible to deal with incorrect installation of a plurality of current measuring units 8. FIG. Therefore, in the case of erroneous installation regarding the mounting direction of the corresponding current measurement unit 8, the determination unit 15 determines that the installation state of the current measurement unit 8 is the first state. In other words, in this case, the judgment unit 15 judges that the method of coping with the abnormality is "to change the mounting orientation of the corresponding current measurement unit 8 with respect to the setting information 22".

In addition, for example, an erroneous installation related to the combination of mounting positions occurs, such as the mounting positions of the current measuring unit 8a for measuring the current I1 and the current measuring unit 8b for measuring the current I2 are reversed. can. In the case of such erroneous installation, the second calculation unit 122 calculates the correct supply power by performing calculation by replacing the measurement value measured by the current measurement unit 8a and the measurement value measured by the current measurement unit 8b. be able to. That is, by changing the combination of the voltages V1 to V3 measured by the voltage measuring unit 7 and the currents I1 to I3 measured by the plurality of current measuring units 8 in the setting information 22, a plurality of current measurements can be performed. Misplacement of part 8 can be accommodated. Therefore, in the case of erroneous installation relating to the combination of mounting positions of the plurality of current measurement units 8, the determination unit 15 determines that the installation status of the plurality of current measurement units 8 is the first status. In other words, in this case, the determination unit 15 determines that the method for coping with the abnormality is "for the setting information 22, the voltages V1 to V3 measured by the voltage measurement unit 7 and the current I1 measured by the plurality of current measurement units 8 to change the combination with ~I3'.

On the other hand, in the case of erroneous installation, such as the contractor forgetting to install the current measurement unit 8a for measuring the current I1, the second calculation unit 122 calculates the power supplied to the first branch circuit 6a. can't Therefore, in the case of such erroneous installation, the determination unit 15 determines that the installation status of the plurality of current measurement units 8 is the second status. That is, in this case, the judgment unit 15 judges that the method of coping with the abnormality is to "correctly install the plurality of current measurement units 8". In addition, the same applies to the case of erroneous installation such that the contractor installs not only the current measuring unit 8a but also the current measuring unit 8b on the R-phase electric wire 3R.

When the determination unit 14 determines the installation status of the plurality of current measurement units 8, the determination presentation unit 192 presents information regarding the determination result. Further, when the determination unit 15 determines how to deal with the abnormal installation situation, the determination presentation unit 193 presents information about the determination result. Furthermore, when determining that the installation state of the current measuring unit 8 is the first state, the determining unit 15 outputs a change instruction for changing the setting information 22 to the changing unit 16 .

(5) Processing (5.1) Display of Vector Diagram As shown in FIGS. 2 and 3, V _R , V _S , and V _T are vectors corresponding to voltages V1, V2, and V3, respectively, and _IR , _IS , and I _T are vectors corresponding to currents I1, I2, and I3, respectively. is a vector that

The vector diagram should show at least the relationship between the voltage phase and the current phase, and it is not essential to show the magnitude of the voltage and the magnitude of the current. Therefore, the length of each vector does not have to correspond to the magnitude of the voltage and the magnitude of the current. In FIGS. 2 and 3, the length of each vector is shown as a constant length. As a result, information that is not essential for determining the installation status of the current measuring unit 8 is excluded, making it easier for the user to perform determination.

When the installation status of the plurality of current measurement units 8 and the setting information 22 are correctly matched, the second calculation unit 122 can normally calculate the supplied power based on the setting information 22 and the voltage/current information 21 . FIG. 2 is a vector diagram when the correspondence between the installation status of the plurality of current measuring units 8 and the setting information 22 is correct. For example, in the installation situation shown in FIG. 1, the current measured by the current measurement unit 8a is processed as the current I1 flowing through the R-phase wire 3R, and the current measured by the current measurement unit 8b is processed as the S-phase wire 3S. If the setting information 22 is defined so that the current measured by the current measuring unit 8c is processed as the current I2 flowing through the T-phase electric wire 3T, the current measuring units 8 and the setting information 22 are correct.

On the other hand, if the correspondence between the installation status of one of the current measuring units 8 and the setting information 22 is incorrect, the second calculation unit 122 calculates the power supply based on the setting information 22 and the voltage/current information 21. cannot be calculated correctly. FIG. 3 is a vector diagram when the correspondence between the installation status of the current measuring units 8a and 8c and the setting information 22 is incorrect. For example, in the installation situation shown in FIG. 1, the current measured by the current measuring unit 8a is processed as the current I3 flowing through the T-phase electric wire 3T, and the current measured by the current measuring unit 8b is processed as the S-phase electric wire 3S. If the setting information 22 is defined so that the current measured by the current measuring unit 8c is processed as the current I1 flowing through the R-phase wire 3R, the current measuring units 8a and 8c and the setting information 22 are incorrect.

In addition, if the installation status of the current measurement unit 8 in any phase is incorrect, for example, the installation is forgotten, the second calculation unit 122 determines whether the setting information 22 and The supplied power cannot be calculated normally based on the voltage and current information 21 .

As shown in FIG. 2, when the correspondence between the installation status of the plurality of current measurement units 8 and the setting information 22 is correct, in the vector diagram, each current is, for example, a phase lagging to some extent with respect to the voltage. . As shown in FIG. 3, if the correspondence between the installation status of one of the current measurement units 8 and the setting information 22 is incorrect, in the vector diagram, a part of the current will be leading phase or significantly lagging phase. Therefore, the user who sees the vector diagram displayed on the display unit 191 considers the magnitude of the phase difference and whether the current is in a lagging phase or a leading phase, and based on his/her own knowledge, performs a plurality of current measurements. The installation status of the unit 8 can be determined. For example, the user can determine whether the installation status of the plurality of current measurement units 8 is normal. That the installation status of the plurality of current measurement units 8 is normal means that the correspondence between the installation status of the plurality of current measurement units 8 and the setting information 22 is correct.

(5.2) Judgment and Judgment of Installation Status of Plurality of Current Measurement Units The judgment of installation status of the plurality of current measurement units 8 is not only performed by the user himself, but can also be automatically performed by the determination processing of the determination unit 14. It is possible. The determination processing by the determination unit 14 will be described below. The determination process is performed, for example, at a predetermined timing such as timing immediately after the installation of the plurality of current measuring units 8 or timing when the date changes.

In the present embodiment, determination processing when the setting information 22 is in a default state, which is a state in which the setting information 22 has never been changed by the changing unit 16, will be described. When the setting information 22 is in the default state, the current measuring section 8a is associated with the R phase, the current measuring section 8b is associated with the S phase, and the current measuring section 8c is associated with the T phase.

That is, when the setting information 22 is in the default state, the second calculator 122 multiplies the voltage V1 by the current I1 measured by the current measuring unit 8a to calculate the power supplied to the first branch circuit 6a. Further, the second calculator 122 calculates the power supplied to the second branch circuit 6b by multiplying the voltage V2 by the current I2 measured by the current measuring unit 8b. Further, the second calculator 122 calculates the power supplied to the third branch circuit 6c by multiplying the voltage V3 by the current I3 measured by the current measuring unit 8c.

In addition, the power system 1 identifies the current measuring units 8a, 8b, and 8c by port numbers of ports (terminals) provided in the power system 1 for wired connection of the current measuring units 8a, 8b, and 8c. ing. That is, it is unknown in the electric power system 1 to which of the electric wires 3R, 3S, and 3T the current measurement units 8a, 8b, and 8c are installed.

When starting the determination process, the determination unit 14 refers to the voltage/current information 21 and the setting information 22 stored in the storage unit 18 as shown in FIG. It is determined whether or not there is (step S10). When the setting information 22 is in the default state, the determination unit 14 determines the pair of the voltage V1 and the current I1, the pair of the voltage V2 and the current I2, and the voltage V3, which are necessary for calculating the power to be supplied to each branch circuit 6. and current I3 satisfy a predetermined abnormal condition. If there is a voltage and current pair that satisfies an abnormal condition, the determination unit 14 determines that the installation situation is abnormal. Here, a method for determining whether or not the pair of voltage V1 and current I1 necessary for calculating the power to be supplied to the first branch circuit 6a satisfies an abnormal condition will be described. A similar determination is made for the pair and the pair of voltage V3 and current I3.

The determination unit 14 determines whether or not the installation state of the current measurement unit 8 is abnormal based on at least one of the phase information and the power factor information. Here, the phase information is information obtained from the voltage/current information 21, and is information regarding the phases of the voltages V1 to V3 and the currents I1 to I3. The power factor information is information obtained from the voltage/current information 21, and is information about the power factor of the power corresponding to the voltages V1 to V3 and the currents I1 to I3. In other words, the power factor information is information obtained from the voltage/current information 21 and is information about the power factor of AC power. In this embodiment, the phase information and the power factor information are information obtained from the voltage/current information 21 by the processing unit 10 . However, the phase information and the power factor information may be information obtained from the voltage/current information 21 by components other than the processing unit 10 such as the voltage measurement unit 7 and the current measurement unit 8 .

First, a case will be described where the determination unit 14 determines whether or not the installation state of the current measurement unit 8a is abnormal based on the phase information. If the current measurement unit 8a is properly installed, the voltage V1 and the current I1 are in phase with each other, so there is a predetermined correlation between the phase angle of the voltage V1 and the phase angle of the current I1. In other words, when there is no predetermined correlation between the phase angle of the voltage V1 and the phase angle of the current I1, it can be said that the current measurement unit 8a is installed abnormally. Therefore, the determination unit 14 checks whether the phase difference between the voltage V1 and the current I1 is within a predetermined range based on the phase difference information regarding the phase difference between the voltage V1 and the current I1 included in the phase information. In this embodiment, when the phase difference of the current I1 with respect to the voltage V1 is outside the range of "-60 degrees or more and 0 degrees or less", the determination unit 14 determines that the combination of the voltage V1 and the current I1 satisfies the abnormal condition. . In addition, in this embodiment, the phase difference information is information obtained by the electric power system 1 from the voltage/current information 21 .

Further, the determination unit 14 may check whether or not the pair of the voltage V1 and the current I1 satisfies an abnormal condition based on the "lead/lag information" included in the phase information. The lead/lag information is information about lead or lag of the phase of the current I1 with respect to the phase of the voltage V1. The lead/lag information includes information on whether the phase of the current I1 leads or lags the phase of the voltage V1. Generally, in a house such as a detached house, the phase of the current I1 lags behind the phase of the voltage V1. Therefore, when the phase of the current I1 leads the phase of the voltage V1, it can be determined that the installation status of at least one current measurement unit 8 is abnormal. If the phase of the current I1 leads the phase of the voltage V1, the determination unit 14 may determine that the pair of the voltage V1 and the current I1 satisfies the abnormal condition. In addition, in this embodiment, the lead/lag information is information obtained by the electric power system 1 from the voltage/current information 21 .

Next, a case will be described where the determination unit 14 determines whether or not the installation state of the current measurement unit 8a is abnormal based on the power factor information. If the installation status of the current measuring unit 8a is normal, the voltage V1 and the current I1 are in phase. The power factor becomes equal to or higher than a predetermined value. In other words, when the power factor of the electric power corresponding to the voltage V1 and the current I1 is less than a predetermined value, it can be said that the installation status of the current measurement unit 8a is abnormal. Therefore, based on the power factor information, the determination unit 14 checks whether the power factor of the power corresponding to the voltage V1 and the current I1 is less than a predetermined value. In this embodiment, when the power factor of the power corresponding to the voltage V1 and the current I1 is less than 0.5, the determination unit 14 determines that the pair of the voltage V1 and the current I1 satisfies the abnormal condition.

Further, when judging the installation status of the current measurement unit 8a based on the phase information or the power factor information, the judgment unit 14 refers to the current value information, and on the condition that the value of the current I1 is equal to or greater than a predetermined value. It is preferable to perform determination processing. This is because, if the value of the current I1 is less than the predetermined value, the determination unit 14 may not be able to perform the determination process accurately due to the influence of noise. In this embodiment, the determination unit 14 determines whether the pair of the voltage V1 and the current I1 satisfies an abnormal condition on condition that the value of the current I1 is 1 [A] or more. The current value information is information obtained from the voltage/current information 21, and is information about the values of the currents I1 to I3 measured by the plurality of current measuring units 8. FIG.

The determination unit 14 performs the same determination for the pair of voltage V2 and current I2 and the pair of voltage V3 and current I3. Then, if any one of the three pairs of voltage and current satisfies the abnormal condition, the determination unit 14 determines that the installation status of at least one current measurement unit 8 is abnormal (YES in step S11). ). After that, the determination unit 14 advances the process to step S12. On the other hand, when none of the three pairs of voltage and current satisfy the abnormality condition, the determination unit 14 determines that the installation situation is normal (no abnormality) (NO in step S11). After that, the determination unit 14 terminates the determination process.

In step S<b>12 , the determination unit 14 performs mounting orientation confirmation processing of the plurality of current measurement units 8 . The attachment orientation confirmation process will be described with reference to FIG. First, based on the voltage/current information 21, the determining unit 14 confirms whether or not each of all pairs of voltages and currents composed of voltages V1 to V3 and currents I1 to I3 satisfies the first condition ( step S31). Here, in the present embodiment, "all pairs" are voltage V1 and current I1, voltage V1 and current I2, voltage V1 and current I3, voltage V2 and current I1, voltage V2 and current I2 , voltage V2 and current I3, voltage V3 and current I1, voltage V3 and current I2, and voltage V3 and current I3.

The determination unit 14 checks whether or not there is a pair that satisfies the first condition among all the pairs. Based on at least one of the phase information and the power factor information, the determination unit 14 checks whether or not there is a pair that satisfies the first condition among all the pairs.

First, a case will be described where the determination unit 14 checks whether or not there is a pair that satisfies the first condition among all pairs based on the phase difference information included in the phase information. In this embodiment, when the phase difference of the current with respect to the voltage is "0 degrees or more and 60 degrees or less", the determination unit 14 determines that the first condition is satisfied.

Next, a case will be described where the determination unit 14 checks whether or not there is a pair that satisfies the first condition among all pairs based on the power factor information and the lead/lag information. In this embodiment, when the power factor of the power corresponding to the voltage and current is 0.5 or more, and the current advances with respect to the voltage, the determination unit 14 determines that the first condition is satisfied. do.

Further, when determining whether or not the pair of voltage and current satisfies the first condition, the determination unit 14 makes a determination based on the current value information on the condition that the value of the current is equal to or greater than a predetermined value. is preferred. This is because, if the value of the current is less than the predetermined value, the determination unit 14 may not be able to perform the determination process accurately due to the influence of noise. In the present embodiment, the determination unit 14 determines whether the pair of voltage and current satisfies the first condition on condition that the current value is 1 [A] or more.

If there is no pair that satisfies the first condition among all the pairs (NO in step S32), the determination unit 14 determines that the mounting orientations of the plurality of current measurement units 8 are correct, and performs mounting orientation confirmation processing (step S12). ). On the other hand, if there is a pair that satisfies the first condition among all the pairs (YES in step S32), the determination unit 14 determines the attachment direction of the current measurement unit 8 that measures the current of the pair that satisfies the first condition. is determined to be incorrect. For example, when the pair of the voltage V1 and the current I3 and the pair of the voltage V2 and the current I1 satisfy the first condition, the determination unit 14 determines the current measurement unit 8c measuring the current I3 and the current I1 It is determined that the mounting orientation of the current measuring unit 8a that measures is incorrect.

The determination unit 14 outputs to the change unit 16 a change instruction for changing the setting information regarding the current measurement unit 8 that has been determined to be installed in the wrong orientation (step S33). After that, the determination unit 14 terminates the mounting orientation confirmation process (step S12). The setting information is changed by the changing unit 16 to reverse the sign of the current value measured by the current measuring unit 8 determined to be in the wrong mounting direction. Specifically, the setting information is changed to multiply the current value by -1. By changing the contents of the setting information, it is possible to deal with incorrect installation regarding the mounting direction of the current measurement unit 8 .

Returning to FIG. 5, the determination unit 14 confirms whether or not the setting information has been changed by the change unit 16 (step S13). Specifically, the determination unit 14 confirms whether or not the change unit 16 has changed the setting information regarding the attachment orientation of any of the current measurement units 8 . If the setting information has not been changed by the changing unit 16 (NO in step S13), the process is skipped to step S16. On the other hand, if the setting information has been changed by the change unit 16 (YES in step S13), the determination unit 14 determines whether or not the installation status of at least one current measurement unit 8 is abnormal ( step S14). This process is the same as the process of step S10. That is, after the change unit 16 changes the setting information regarding the mounting orientation of the current measurement units 8 , the determination unit 14 re-determines the installation status of the plurality of current measurement units 8 . After the setting information is changed by the changing unit 16, the determining unit 14 re-determines the installation status of the plurality of current measuring units 8, so that the incorrect installation of the plurality of current measuring units 8 can be dealt with by changing the setting information. It is possible to determine whether or not Since the contents of the processing in step S14 are the same as those in step S10, description thereof will be omitted.

When the determination unit 15 re-determines that the installation status of the plurality of current measurement units 8 is normal (no abnormality) (NO in step S15), the determination unit 15 determines that the installation status of the plurality of current measurement units 8 is the first status. (step S17). Then, the determination unit 14 terminates the determination process. On the other hand, when the determination unit 14 re-determines that the installation status of at least one current measurement unit 8 is abnormal (YES in step S15), the determination unit 14 performs combination confirmation processing of voltage and current (step S16).

The voltage and current combination confirmation process will be described with reference to FIG. The determining unit 14 selects a combination that satisfies the second condition among all voltage and current combinations that can be combined when calculating power to be supplied to the first branch circuit 6a, the second branch circuit 6b, and the third branch circuit 6c. exists (step S41).

Here, "all voltage and current combinations" include the following six combinations. The first combination included in "all voltage and current combinations" is a combination composed of a pair of voltage V1 and current I1, a pair of voltage V2 and current I2, and a pair of voltage V3 and current I3. is. The second combination included in "all voltage and current combinations" is the combination formed by the voltage V1 and current I1 pair, the voltage V2 and current I3 pair, and the voltage V3 and current I2 pair. is. A third combination included in "all voltage and current combinations" is a combination formed by a pair of voltage V1 and current I2, a pair of voltage V2 and current I1, and a pair of voltage V3 and current I3. is. A fourth combination included in "all voltage and current combinations" is a combination formed by a pair of voltage V1 and current I2, a pair of voltage V2 and current I3, and a pair of voltage V3 and current I1. is. A fifth combination included in "all voltage and current combinations" is a combination composed of a pair of voltage V1 and current I3, a pair of voltage V2 and current I1, and a pair of voltage V3 and current I2. is. The sixth combination included in "all voltage and current combinations" is a combination composed of a pair of voltage V1 and current I3, a pair of voltage V2 and current I2, and a pair of voltage V3 and current I1. is.

Based on at least one of the phase information and the power factor information, the determination unit 14 determines whether or not there is a combination that satisfies the second condition among all the voltage and current combinations.

First, a case will be described where the determination unit 14 checks whether or not there is a combination that satisfies the second condition among all combinations of voltages and currents based on phase difference information included in phase information. A combination in which the phase difference of the three pairs of voltage and current is within a predetermined range is determined by the determination unit 14 to satisfy the second condition. In the present embodiment, the determination unit 14 determines that the phase difference between the voltage and the current is within a predetermined range when the phase difference between the current and the voltage is within the range of "-60 degrees or more and 0 degrees or less". .

Next, a case will be described where the determination unit 14 checks whether or not there is a combination that satisfies the second condition among all combinations of voltage and current based on power factor information and lead/lag information. The determining unit 14 determines that a combination in which the power factor of electric power corresponding to each of the three pairs of voltage and current is equal to or greater than a predetermined value and the phase of the current is delayed with respect to the phase of the voltage satisfies the second condition. judge. In this embodiment, the predetermined value is 0.5.

If there is a combination that satisfies the second condition (YES in step S41), the determination unit 15 determines that the installation status of the plurality of current measurement units 8 is the first status (step S42). Then, the determination unit 14 ends the voltage and current combination confirmation process (step S16). On the other hand, if there is no combination that satisfies the second condition (NO in step S41), the determination unit 15 determines that the installation status of the plurality of current measurement units 8 is the second status (step S43). Then, the determination unit 14 ends the voltage and current combination confirmation process (step S16).

Returning to FIG. 5, if the installation status is the first status (YES in step S18), the determination unit 15 sends a change instruction to change the information regarding the combination of voltage and current included in the setting information to the change unit 16. (step S19). Upon receiving the change instruction, the change unit 16 changes the information regarding the combination of voltage and current included in the setting information based on the change instruction. That is, when the determination unit 15 determines that the installation status of the plurality of current measurement units 8 is the first status, the change unit 16 changes the setting information. As a result, the information on the combination of voltage and current included in the setting information is changed to a combination that satisfies the second condition. Therefore, when the installation status is the first status, the user does not need to change the setting information or re-install the plurality of current measurement units 8 . When the setting information is changed by the changing unit 16, the determination processing by the determination unit 14 ends.

On the other hand, if the installation status is not the first status, that is, if it is the second status (NO in step S18), the display processing unit 13 causes the determination presentation unit 193 to notify the determination result (step S20). In the present embodiment, the display unit 191 also serves as the determination presenting unit 192 and the determination presenting unit 193, and displays both the determination result and the determination result. Specifically, the power system 1 notifies the user of the determination result and the determination result by causing the determination presentation unit 192 (determination presentation unit 193) to display a message (see FIG. 3). The user can normalize the installation status by reinstalling the plurality of current measurement units 8 .

The determination result presented (displayed) by the determination presentation unit 192 includes, for example, information as to whether or not the installation status of at least one current measurement unit 8 is normal. The determination result may include information as to which current measurement unit 8 among the plurality of current measurement units 8 has an abnormal (or normal) installation status. For example, the determination presenting unit 192 distinguishes between the current measuring units 8a, 8b, and 8c by the port numbers of the ports (terminals) provided in the electric power system 1 for wired connection of the current measuring units 8a, 8b, and 8c. may be presented.

The determination result presented by the determination presenting unit 193 includes, for example, information indicating how to deal with an abnormal installation state of at least one current measuring unit 8 . For example, when the determination unit 15 determines that the installation state of the plurality of current measurement units 8 is the first state, the determination presentation unit 193 presents that the setting information 22 has been changed. Further, for example, when the determination unit 15 determines that the installation status of the plurality of current measurement units 8 is the second status, the determination presentation unit 193 makes a presentation prompting the reinstallation of the plurality of current measurement units 8 . The determination result presented by the determination presentation unit 193 may include information as to which current measurement unit 8 among the plurality of current measurement units 8 needs to be reinstalled. The determination presentation unit 193 distinguishes between the current measurement units 8a, 8b, and 8c by port numbers of ports (terminals) provided in the electric power system 1 for wired connection of the current measurement units 8a, 8b, and 8c, for example. You may present the judgment result.

After the judgment result and the judgment result are presented by the judgment presentation unit 192 (judgment presentation unit 193), the judgment unit 14 ends the judgment processing.

Moreover, the display processing unit 13 updates the vector diagram displayed on the display unit 191 each time the setting information 22 is changed. The user can refer to the updated vector diagram to determine the installation status.

(Modification of Embodiment 1)
Modifications of the first embodiment are listed below. The following modified examples may be implemented in combination as appropriate.

The voltage measurement unit 7 and the plurality of current measurement units 8 are not limited to being installed in the consumer facility, and may be installed in power generation equipment to measure the voltage and current output from the power generation equipment. In this case, the power supply destination may be a device (load, storage battery, etc.) installed in the consumer equipment, or may be a device installed in the commercial power system.

The voltage measurement unit 7 is not limited to measuring phase voltages, and may measure line voltages.

The wiring system of the AC power supply 2 is not limited to Y-connection as in the embodiment, but may be Δ-connection. The plurality of current measurement units 8 may measure phase currents or line currents.

At least one of the plurality of current measurement units 8 may be installed on the primary side of the main breaker 5 instead of being installed on the secondary side of the main breaker 5 as in the first embodiment, or the branch circuit 6 may be installed in

It is not essential that the electric power system 1 include the first calculator 121, and the phases of the voltages V1 to V3 may be calculated by the voltage measuring unit 7, and the phases of the currents I1 to I3 are calculated by a plurality of current measuring units 8. You may

The determination result of the determination unit 14 is not limited to being presented to the user, and may be stored in the storage unit 18 or transmitted to an external device (computer server, etc.) of the power system 1 .

The determination result of the determination unit 15 is not limited to being presented to the user, and may be stored in the storage unit 18 or transmitted to an external device (computer server, etc.) of the power system 1 .

The changing unit 16 may change the setting information 22 according to the user's selection. For example, when the determination unit 15 determines that the installation status of the plurality of current measurement units 8 is the first status, the determination presentation unit 193 presents a message asking whether to change the setting information 22 . In response to this, when the user operates the operation unit 195 to approve the change of the setting information 22 , the change unit 16 changes the setting information 22 . After that, the user can see the vector diagram displayed on the display unit 191 to confirm whether or not the installation status has become normal. Furthermore, the user can operate the operation unit 195 to return the setting information 22 to the state before the change.

The display unit 191 may display a message prompting confirmation of the installation status of the plurality of current measurement units 8 in addition to the vector diagram. In addition to the vector diagram, the display unit 191 may also display a method for confirming the installation status of the plurality of current measurement units 8 .

A power system 1 in the present disclosure includes a computer system. A computer system is mainly composed of a processor and a memory as hardware. At least part of the function of the power system 1 in the present disclosure is realized by the processor executing a program recorded in the memory of the computer system. The program may be recorded in advance in the memory of the computer system, may be provided through an electric communication line, or may be recorded in a non-temporary recording medium such as a computer system-readable memory card, optical disk, or hard disk drive. may be provided. A processor in a computer system consists of one or more electronic circuits, including semiconductor integrated circuits (ICs) or large scale integrated circuits (LSIs). The integrated circuit such as IC or LSI referred to here is called differently depending on the degree of integration, and includes integrated circuits called system LSI, VLSI (Very Large Scale Integration), or ULSI (Ultra Large Scale Integration). In addition, a field-programmable gate array (FPGA) that is programmed after the LSI is manufactured, or a logic device capable of reconfiguring the bonding relationship inside the LSI or reconfiguring the circuit partitions inside the LSI may also be adopted as the processor. can be done. A plurality of electronic circuits may be integrated into one chip, or may be distributed over a plurality of chips. A plurality of chips may be integrated in one device, or may be distributed in a plurality of devices. A computer system, as used herein, includes a microcontroller having one or more processors and one or more memories. Accordingly, the microcontroller also consists of one or more electronic circuits including semiconductor integrated circuits or large scale integrated circuits.

In addition, it is not an essential configuration of the power system 1 that a plurality of functions in the power system 1 are aggregated in one device, and the components of the power system 1 are provided dispersedly in a plurality of devices. good too. Furthermore, at least part of the functions of the power system 1, for example, part of the functions of the processing unit 10, may be realized by the cloud (cloud computing) or the like. Conversely, the functions of the power system 1 may be integrated into one device as in the first embodiment.

(Embodiment 2)
A power system 1A according to Embodiment 2 will be described below with reference to FIG. Configurations similar to those of the first embodiment are denoted by the same reference numerals, and descriptions thereof are omitted.

A power system 1A of this embodiment includes a calculation device 101 and a presentation terminal 102 . The calculation device 101 includes at least an acquisition unit 11, a first calculation unit 121 (hereinafter also referred to as calculation unit 121), and a communication unit 17 (hereinafter also referred to as output unit 17). The function of the calculator 121 is the same as that of the first calculator 121 of the first embodiment. That is, the calculation unit 121 calculates the phase of the voltage between the plurality of wires 3 and the phase of the current flowing through each of the plurality of wires 3 based on the voltage-current information 21 acquired by the acquisition unit 11 . The output unit 17 outputs information including the voltage phase and the current phase calculated by the calculation unit 121 . The information output by the output unit 17 specifically includes information for displaying a vector diagram on the display unit 191 . Also, the information output by the output unit 17 may include the determination result of the determination unit 14 and the determination result of the determination unit 15 . The presentation terminal 102 includes at least part of the configuration of the presentation system 19 and an information acquisition unit 196 . The presentation terminal 102 of this embodiment includes the entire presentation system 19 . The information acquisition unit 196 includes, for example, a communication interface device. The information acquisition unit 196 can communicate with the output unit 17 of the calculation device 101 via the communication interface device. The information acquisition section 196 acquires information from the output section 17 . The presentation terminal 102 presents the information acquired by the information acquisition unit 196 in the presentation system 19 .

Computing device 101 includes, for example, a stationary computer system. The calculation device 101 is installed, for example, in a facility provided with a plurality of electric wires 3 . The presentation terminal 102 is, for example, a mobile phone such as a smart phone, a tablet terminal, or a personal computer. The presentation terminal 102 is owned by the user. The user can obtain information using the presentation terminal 102 at a location away from the computing device 101 . For example, the user can use the presentation terminal 102 to obtain at least one of the vector diagram (see FIGS. 2 and 3), the determination result of the determination unit 14, and the determination result of the determination unit 15. .

Moreover, the presentation terminal 102 may be attached to the outer surface of the cabinet 9 of the distribution board 4, for example. Also, when the facility is a house, for example, the presentation terminal 102 may be installed in a living space of the house. Also, when the facility is, for example, an apartment complex, the presentation terminal 102 may be installed in the manager's room of the apartment complex.

(Embodiment 3)
The power measurement system 103 (see FIG. 1) according to the third embodiment will be described below. Configurations similar to those of the first embodiment are denoted by the same reference numerals, and descriptions thereof are omitted.

The power measurement system 103 includes the acquisition unit 11 of the power system 1 . The power measurement system 103 further includes a voltage measurement unit 7 and (a plurality of) current measurement units 8 .

For example, the power measurement system 103 includes the power system 1 of Embodiment 1, a voltage measurement unit 7 and a plurality of current measurement units 8 . In this case, the power measurement system 103 further includes a presentation system 19 in addition to the acquisition unit 11 , voltage measurement unit 7 and multiple current measurement units 8 .

Alternatively, the power measurement system 103 includes, for example, the calculation device 101 of the second embodiment, the voltage measurement unit 7, and a plurality of current measurement units 8. In this case, the presentation terminal 102 equipped with the presentation system 19 is provided in a separate housing from the power measurement system 103 . Moreover, in this case, the power measurement system 103 further includes a determination unit 14 and a determination unit 15 in addition to the acquisition unit 11 , the voltage measurement unit 7 and the plurality of current measurement units 8 . As described above, the power measurement system 103 may further include at least one of the determination unit 14 and the determination unit 15 .

Multiple configurations of the power measurement system 103 may be integrated into one device. Alternatively, multiple configurations of the power measurement system 103 may be distributed among multiple devices.

At least part of the functions of the power system 1 may be provided in the voltage measurement unit 7 or the current measurement unit 8 . For example, the function of at least one of the determination section 14 and the determination section 15 may be provided in the voltage measurement section 7 or the current measurement section 8 . The presentation system 19 may present to the user the determination and the determined result by the voltage measurement unit 7 or the current measurement unit 8 .

(Other modifications)
In Embodiments 1 to 3, the cabinet 9 (see FIG. 4) of the distribution board 4 may house at least part of the power system 1 (or 1A). Moreover, in Embodiment 3, the cabinet 9 may house at least part of the power measurement system 103 .

That is, in this modification, the distribution board 4 includes the power system 1 (or 1A) or the power measurement system 103 and the cabinet 9, and the cabinet 9 is the power system 1 (or 1A) or the power measurement system. It houses at least part of system 103 . According to this modification, at least part of the configuration of the power system 1 (or 1A) or the power measurement system 103 can be integrated in the cabinet 9 .

(summary)
The following aspects are disclosed from the embodiments and the like described above.

A power system (1, 1A) according to a first aspect comprises an acquisition unit (11) and a presentation system (19). An acquisition unit (11) measures a voltage measurement unit (7) that measures voltage between a plurality of wires (3) and a current measurement unit (8) that measures current flowing through each of the plurality of wires (3). The result is acquired as voltage current information (21). A presentation system (19) presents the information. The presentation system (19) includes a display (191). A display unit (191) displays a vector diagram based on the voltage/current information (21) acquired by the acquisition unit (11). The vector diagram shows the relationship between the phase of the voltage between the multiple wires (3) and the phase of the current flowing through each of the multiple wires (3).

According to the above configuration, the display unit (191) displays the relationship between the phase of the voltage and the phase of the current in the form of a vector diagram. It is easy to determine the installation status of the measurement unit (8).

Moreover, the electric power system (1, 1A) according to the second aspect, in the first aspect, further includes a determination unit (14). A determination unit (14) determines the installation status of the current measurement unit (8) based on the voltage/current information (21) acquired by the acquisition unit (11).

According to said structure, the installation condition of a current measuring part (8) can be automatically determined.

Further, in the power system (1, 1A) according to the third aspect, in the second aspect, the presentation system (19) further includes a judgment presenting section (192) for presenting the judgment result of the judgment section (14). .

According to the above configuration, the user can know the determination result of the determination section (14).

Moreover, the electric power system (1, 1A) according to the fourth aspect further includes a determination unit (15) in the second or third aspect. A judging section (15) judges how to deal with the abnormality based on the voltage/current information (21) when the judging section (14) judges that the installation state of the current measuring section (8) is abnormal.

According to the above configuration, it is possible to automatically determine the coping method.

Moreover, the electric power system (1, 1A) according to the fifth aspect, in the fourth aspect, further includes a changing unit (16). A changing unit (16) changes settings related to calculation of power to be supplied from the plurality of electric wires (3) to a power supply destination based on the determination result of the determining unit (15).

According to the above configuration, it is possible to correct the setting related to power calculation.

Further, in the power system (1, 1A) according to the sixth aspect, in the fourth or fifth aspect, the presentation system (19) includes a judgment presentation section (193) that presents the judgment result of the judgment section (15). further includes

According to the above configuration, the user can know the judgment result of the judging section (15).

Further, the electric power system (1A) according to the seventh aspect includes the calculation device (101) and the presentation terminal (102) in any one of the first to sixth aspects. A calculation device (101) includes an acquisition unit (11), a calculation unit (121), and an output unit (17). A calculation unit (121) calculates phases of voltages between the plurality of wires (3) and currents flowing through each of the plurality of wires (3) based on the voltage/current information (21) acquired by the acquisition unit (11). Calculate the phase. The output unit (17) outputs information including the voltage phase and the current phase calculated by the calculation unit (121). The presentation terminal (102) includes at least part of the configuration of the presentation system (19) and an information acquisition section (196) that acquires information from the output section (17). The presentation terminal (102) presents the information acquired by the information acquisition unit (196) in the presentation system (19).

According to the above configuration, the user can obtain information using the presentation terminal (102) at a place away from the computing device (101).

Configurations other than the first aspect are not essential configurations for the power system (1, 1A), and can be omitted as appropriate.

Further, the power measurement system (103) according to the eighth aspect includes the acquisition unit (11) of the power system (1, 1A) according to any one of the first to seventh aspects. The power measurement system (103) further includes a voltage measurement section (7) and a current measurement section (8).

According to the above configuration, the user can easily determine the installation status of the current measuring section (8).

In addition, the power measurement system (103) according to the ninth aspect, in the eighth aspect, further includes at least one of the determining section (14) and the determining section (15). A determination unit (14) determines the installation status of the current measurement unit (8) based on the voltage/current information (21) acquired by the acquisition unit (11). A judging section (15) judges how to deal with the abnormality based on the voltage/current information (21) when the judging section (14) judges that the installation state of the current measuring section (8) is abnormal.

According to the above configuration, the power measurement system (103) including the voltage measurement unit (7) and the current measurement unit (8) is provided with at least one of the functions of the determination unit (14) and the determination unit (15). be able to.

Configurations other than the eighth aspect are not essential configurations for the power measurement system (103), and can be omitted as appropriate.

Further, the distribution board (4) according to the tenth aspect is the power system (1, 1A) according to any one of the first to seventh aspects, or the power measurement according to the eighth or ninth aspect. It comprises a system (103) and a cabinet (9). The cabinet (9) houses at least part of the power system (1, 1A) or power metering system (103).

According to the above configuration, the display unit (191) displays the relationship between the phase of the voltage and the phase of the current in the form of a vector diagram. It is easy to determine the installation status of the measurement unit (8).

A program according to an eleventh aspect is a program for causing one or more processors of a computer system to perform acquisition processing and display processing. In the acquisition process, the measurement results of the voltage measurement unit (7) that measures the voltage between the plurality of wires (3) and the current measurement unit (8) that measures the current flowing through each of the plurality of wires (3) are Acquired as voltage current information (21). In the display process, a vector diagram is displayed based on the voltage/current information (21) acquired in the acquisition process. The vector diagram shows the relationship between the phase of the voltage between the multiple wires (3) and the phase of the current flowing through each of the multiple wires (3).

According to the above configuration, the display unit (191) displays the relationship between the phase of the voltage and the phase of the current in the form of a vector diagram. It is easy to determine the installation status of the measurement unit (8).

Various configurations (including modifications) of the power systems (1, 1A) and the power measurement system (103) according to the embodiments are not limited to the above aspects, but may be a (computer) program or a non-temporary recording of the program. It can be embodied in a medium.

1, 1A power system 3 electric wire 4 distribution board 7 voltage measurement unit 8 current measurement unit 9 cabinet 11 acquisition unit 14 determination unit 15 determination unit 16 change unit 19 presentation system 21 voltage and current information 101 calculation device 102 presentation terminal 103 power measurement system 191 display unit 192 judgment presentation unit 193 judgment presentation unit 196 information acquisition unit

Claims (11)

a voltage measuring unit that measures voltage between a plurality of wires, and an acquisition unit that acquires measurement results of a current measuring unit that measures current flowing through each of the plurality of wires as voltage and current information;
a presentation system for presenting information;
The presentation system, based on the voltage and current information acquired by the acquisition unit, is a vector diagram showing the relationship between the phase of the voltage between the plurality of wires and the phase of the current flowing through each of the plurality of wires. including a display that displays
power system. further comprising a determination unit that determines an installation status of the current measurement unit based on the voltage and current information acquired by the acquisition unit;
The power system of claim 1. The presentation system further includes a judgment presenting unit that presents the judgment result of the judgment unit,
3. The power system of claim 2. Further comprising a determination unit that determines a method for coping with the abnormality based on the voltage and current information when the determination unit determines that the installation status of the current measurement unit is abnormal.
4. The power system according to claim 2 or 3. Further comprising a changing unit that changes settings related to calculation of power to be supplied from the plurality of wires to a power supply destination based on the determination result of the determining unit,
5. The power system of claim 4. The presentation system further includes a judgment presentation unit that presents the judgment result of the judgment unit,
6. A power system according to claim 4 or 5. the acquisition unit;
a calculating unit that calculates the phase of the voltage between the plurality of wires and the phase of the current flowing through each of the plurality of wires based on the voltage and current information obtained by the obtaining unit;
an output unit that outputs information including the phase of the voltage and the phase of the current calculated by the calculation unit;
a computing device comprising
a configuration of at least part of the presentation system, and an information acquisition unit that acquires the information from the output unit, and a presentation terminal that presents the information acquired by the information acquisition unit in the presentation system,
The power system according to any one of claims 1-6. A power measurement system comprising the acquisition unit of the power system according to any one of claims 1 to 7,
The power measurement system further includes the voltage measurement unit and the current measurement unit,
Power metering system. a determination unit that determines the installation status of the current measurement unit based on the voltage and current information acquired by the acquisition unit;
a determination unit that determines a method of coping with the abnormality based on the voltage and current information when the determination unit determines that the installation status of the current measurement unit is abnormal;
The power measurement system according to claim 8. The power system according to any one of claims 1 to 7, or the power measurement system according to claim 8 or 9,
a cabinet that houses at least part of the power system or the power metering system;
Distribution board. to one or more processors of a computer system;
Acquisition processing for acquiring, as voltage and current information, measurement results of a voltage measuring unit that measures voltage between a plurality of wires and a current measuring unit that measures current flowing through each of the plurality of wires;
display processing for displaying a vector diagram showing a relationship between the phase of the voltage between the plurality of wires and the phase of the current flowing through each of the plurality of wires, based on the voltage and current information obtained in the obtaining processing; and to run
program.

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