JP2018165635A - Estimation device, estimation method, and estimation program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow for easily estimating failure of devices for measuring the amount of electric power.SOLUTION: An estimation device according to an exemplary embodiment comprises: a collection unit configured to collect information on the amount of electric power measured by each of a plurality of electric devices, each being configured to measure the amount of electric power supplied through a trunk line and to perform a predetermined function based on the measured amount of electric power; and an estimation unit configured to estimate which one(s) of the plurality of electric devices has failed based on a result of comparison of the amounts of electric power collected by the collection unit.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to an estimation device, an estimation method, and an estimation program.

  In recent years, a power management system called HEMS (Home Energy Management System) has been proposed. As such HEMS technology, the function of measuring the power consumption of electrical equipment in the house for each equipment or system and presenting it to the user, the function of controlling the electrical equipment in the house from the terminal device, etc. It has been known.

Toshiba Lighting & Technology Corporation FEMINITY [Search on March 17, 2017]: <URL: http://feminity.toshiba.co.jp/feminity/hems/control.html>

  However, in the conventional technology described above, it may be difficult to determine whether or not the measured power consumption is correct. For example, when a device that measures the main power amount in a given facility outputs a zero value as the measurement result, whether the power device in the given facility has stopped, or the device that measures the power amount has failed It is difficult to determine from the measurement results.

  The problem to be solved by the present invention is to easily estimate the failure of a device that measures the amount of power.

  The estimation apparatus according to an example of the embodiment measures the amount of electric power provided via the trunk, and measures the electric power measured by each electric device from a plurality of electric devices that exhibit a predetermined function based on the measured electric energy. A collecting unit that collects the amount; and an estimating unit that estimates a failed electric device from the electric devices based on a comparison result of the amount of power collected by the collecting unit.

  According to the estimation apparatus according to an example of the embodiment, it is possible to easily estimate the failure of the apparatus that measures the amount of power.

FIG. 1 is a diagram illustrating an example of an estimation apparatus according to the embodiment. FIG. 2 is a diagram illustrating an example of a functional configuration included in the estimation apparatus according to the embodiment. FIG. 3 is a diagram illustrating an example of information registered in the power amount history database according to the embodiment. FIG. 4 is a flowchart illustrating an example of a flow of estimation processing executed by the estimation apparatus according to the embodiment.

  Hereinafter, an estimation apparatus, an estimation method, and an estimation program according to embodiments will be described with reference to the drawings. In the embodiment, configurations having the same functions are denoted by the same reference numerals, and redundant description is omitted. Note that the estimation device, estimation method, and estimation program described in the following embodiments are merely examples, and do not limit the embodiments. For example, in the following embodiments, the estimation device, the estimation method, and the estimation program are devices installed in a house, and a failed electrical device is selected from electrical devices having a function of measuring the amount of power flowing through the main trunk. The estimation process is executed, but the amount of power demand in an arbitrary facility such as a building or a factory may be predicted in addition to the house. The following embodiments may be appropriately combined within a consistent range.

  The estimation apparatus 10 according to the following embodiment includes a collection unit 41 and an estimation unit 42. The collection unit 41 measures the amount of power provided via the main trunk, and collects the amount of power measured by each electrical device from a plurality of electrical devices that perform a predetermined function based on the measured amount of power. Moreover, the estimation part 42 estimates the electric equipment which failed out of the electric equipment based on the comparison result of the collected electric energy.

  Moreover, the estimation apparatus 10 which concerns on the following embodiment collects the electric energy which the smart meter MT, storage battery SB, or the photovoltaic power generation apparatus (for example, smart solar panel SPV) measured as an electric equipment.

  Moreover, the estimation apparatus 10 which concerns on the following embodiment collects the electric energy which each electric equipment measured from the some electric equipment, and the date information which shows the date when the electric energy was measured. And the estimation apparatus 10 estimates the electric equipment which failed from the electric equipment based on the comparison result of the electric energy which several electric equipment measured simultaneously.

  In addition, the estimation apparatus 10 according to the following embodiment estimates a faulty electrical device from among the electrical devices based on the history of electric energy measured by a plurality of electrical devices.

  In addition, the estimation apparatus 10 according to the following embodiment collects at least the amount of power measured by the smart meter MT, and the difference between the amount of power measured by another electrical device and the amount of power measured by the smart meter MT is When the predetermined threshold is exceeded, it is estimated that the electrical device has failed.

  In addition, the estimation device 10 according to the following embodiment collects electric energy from three or more electric devices, and calculates the electric energy measured by a predetermined electric device and the electric energy measured by other electric devices. When each difference exceeds a predetermined threshold value, it is estimated that a predetermined electric device has failed.

  Moreover, the estimation apparatus 10 according to the following embodiment notifies a predetermined administrator that the smart meter MT has failed when it is estimated that the smart meter MT has failed among a plurality of electrical devices.

  In addition, the estimation device 10 according to the following embodiment is provided via an electrical device that measures the amount of power provided via the trunk in the first facility, and the trunk in the second facility that has similar attributes to the first facility. The amount of power measured by the electrical equipment that measures the amount of power to be collected is collected.

[Embodiment]
(Outline of estimation device)
Hereinafter, an example of the estimation apparatus will be described. FIG. 1 is a diagram illustrating an example of an estimation apparatus according to the embodiment. In the example illustrated in FIG. 1, the estimation device 10 includes HGWs (Home Gateways) 100a and 100b (hereinafter referred to as “HGW100”) installed in houses HMa and HMb (hereinafter may be collectively referred to as “house HM”). And the user terminal 200 used by the user U is communicably connected via an arbitrary network N such as the Internet (for example, see FIG. 2). Note that the estimation apparatus 10 may be able to communicate with an arbitrary number of HGWs 100 and an arbitrary number of user terminals 200 installed in an arbitrary number of houses HM, and an arbitrary type of HGW 100 and user terminal 200. It may be possible to communicate with.

  The estimation device 10 is an information processing device that performs an estimation process to be described later, and is realized by, for example, a server device or a cloud system. For example, the estimation apparatus 10 is an electrical device installed in the house HM at a predetermined time interval (for example, 30 minutes), and the amount of power supplied via the main trunk (hereinafter referred to as “main power amount”). The main electrical energy is collected from the electrical equipment that measures the electrical power (hereinafter referred to as “measured electrical equipment”), and the measured electrical equipment that has failed is estimated based on a comparison of the collected main electrical energy. Execute the process.

  Here, the house HM is a facility that consumes power because a device (that is, a load device) that consumes power, such as a load L including a plurality of home appliances, is installed separately from the measurement electrical device. For example, in the house HM, the HGW 100, the distribution board HD, the load L, the storage battery SB, and the smart solar panel SPV are installed, and the smart meter MT is installed outside the house HM, so-called HEMS. A system called (Home Energy Management System) has been established. In addition, although description was abbreviate | omitted in FIG. 1, the measurement electrical equipment similar to the house HMa may be installed in the house HMb, and it does not need to be.

  The system power supply CP is an external power supply that supplies power to the house HM, and supplies power to the house HM.

  The smart meter MT is a meter that measures the power supplied from the system power supply CP, that is, the power purchased from the system power supply CP, and the power supplied to the system power supply CP side, that is, the sold power. That is, the smart meter MT measures the power supplied from the system power supply CP via the main trunk.

  Here, the smart meter MT transmits information regarding the power supplied from the measured system power supply CP to the HGW 100. For example, the smart meter MT measures the power supplied from the system power supply CP by a current transformer (CT) (not shown) or the like. For example, the smart meter MT may include a meter that measures the sold power and a meter that measures the purchased power. The measurement information of the smart meter MT may be displayed on a predetermined display device via the HGW 100.

  The smart solar panel SPV is an aspect battery module having a power storage function. For example, the smart solar panel SPV includes a solar panel PV, a control unit PC, and a storage battery PB. For example, the solar panel PV is a solar cell module in which a required number of solar cell elements (cells) are arranged and packaged with resin or tempered glass, and is also called a solar panel. In addition, what kind of cell may be sufficient as the cell used for the solar panel PV. For example, as the cell used for the solar panel PV, various cells such as a silicon cell, a compound cell, and an organic cell may be appropriately selected according to the purpose.

  The control unit PC is also called a power conditioner or a PCS (Power Conditioning System). Moreover, control part PC is an apparatus which makes the electric power which the solar panel PV generate | occur | produced available with the load L in the house HM. For example, the control unit PC converts DC power supplied from the solar panel PV into AC power. Further, for example, the control unit PC supplies the power converted into the AC power to the distribution board HD or the storage battery PB.

  The storage battery PB is a storage battery installed in the smart solar panel SPV and has a function of storing electric power generated by the solar panel PV. For example, when the power consumption of the load L is lower than a predetermined threshold in the house HM, the control unit PC stores the power generated by the solar panel PV in the storage battery PB. When the power consumption amount of the load L exceeds a predetermined threshold value, the control unit PC uses the distribution panel HD to load the power stored in the storage battery PB and the power generated by the solar panel PV. L and so on.

  The storage battery SB is installed in the house HM and stores power. For example, the storage battery SB includes a control unit SBC and a power storage unit B. The storage battery SB is a secondary battery (battery) capable of storing electric power. The control unit SBC is also a device called a power converter or PCS, and converts power (for example, AC power) supplied from the distribution board HD into power (for example, DC power) that can be stored in the power storage unit B. Then, by supplying the converted power to the power storage unit B, the charging of the power storage unit B is controlled. Further, the control unit SBC converts the power charged in the power storage unit B (for example, DC power) into power that can be used by the load L (for example, AC power), and converts the converted power to the distribution board HD. Output.

  In addition, as long as the storage battery SB can store electricity by charging and can be repeatedly charged and discharged, any battery may be adopted as the power storage unit B. For example, as the storage battery SB, various storage batteries such as a lithium ion battery, a lead battery, or a nickel metal hydride battery may be adopted as the power storage unit B depending on the purpose. The storage battery SB may have any configuration as long as it has a function of storing electric power, and may be, for example, an electric vehicle or a plug-in hybrid vehicle. Note that any secondary battery can be used as the storage battery PB in the same manner as the power storage unit B.

  The distribution board HD is a device that divides electricity into the wiring of the house HM. For example, the distribution board HD is a circuit breaker that cuts off the power supplied to the entire house HM when a leakage occurs (that is, a main breaker) or a circuit breaker that cuts off the power supplied for each wiring. (Ie, a branch breaker). Such a distribution board HD supplies, for example, power supplied from the system power supply CP via the smart meter MT to various load devices included in the load L.

  In addition, the distribution board HD has a function of supplying power generated by the smart solar panel SPV to the load L. Note that the distribution board HD may store the power generated by the smart solar panel SPV in the storage battery SB and supply the power stored in the storage battery SB to the load L. The distribution board HD may store the power supplied from the system power supply CP in the storage battery SB at night or the like and supply the power stored in the storage battery SB to the load L, for example. In addition, distribution board HD may be comprised by the distribution board which distributes the electric power from system power supply CP, and the distribution board which distributes the electrical storage with respect to storage battery SB, or the electric power from storage battery SB.

  The load L is various load devices that consume power, and is a so-called home appliance. For example, the load L includes not only a daily load device such as a refrigerator, a washing machine, and a television, but also a load device used according to the season and climatic conditions such as an air conditioner, that is, seasonality. A load device may be included.

  The load L, the smart solar panel SPV, the storage battery SB, the distribution board HD, and the smart meter MT are a wireless LAN (Local Area Network), a HAN (Home Area Network), a power meter information transmission service (B route service), etc. It is assumed that communication is possible according to any communication standard. For example, in FIG. 1, a dotted line connecting the components indicates an electrical connection relationship, and a solid line connecting the components indicates a connection relationship capable of transmitting and receiving information. In addition, the connection relationship of each structure of the estimation apparatus 10 is not restricted to the connection relationship shown in FIG. 1, and may be another connection relationship. For example, information may be transmitted and received between components connected by a dotted line, or an electrical connection relationship may be established between components connected by a solid line.

  In such a HEMS system, the smart meter MT, the storage battery SB, and the smart solar panel SPV measure the amount of power through the trunk via the distribution board HD, and perform a predetermined function based on the measurement result. Has a function to demonstrate. For example, the smart meter MT measures the amount of power purchased or sold from the grid power supply CP via the main trunk, that is, the function of measuring the amount of electric power via the main trunk and holding the measured power amount as a log, or the A route Or it has a function which transmits a log to the server apparatus etc. which an electric power company owns via the communication function called B route.

  Further, the storage battery SB exhibits the function of supplying the power stored in the power storage unit B when the power consumption of the load L exceeds a predetermined threshold, and therefore measures the amount of power through the trunk of the distribution board HD. It has a function. Similarly, the smart solar panel SPV also has a function of measuring the amount of power through the trunk of the distribution board HD in order to exhibit the function of supplying the power stored in the storage battery PB. That is, a smart meter MT, a storage battery SB, and a smart solar panel SPV are installed in the house HM as measurement electrical devices that measure the amount of power in the main trunk.

  The HGW 100 is a network device that enables transmission and reception of information between the network N and a network in the house HM. A predetermined relay device (for example, a broadband router) or the like may be provided between the HGW 100 and the network N, but the description thereof is omitted in FIG. In addition, the HGW 100 enables transmission / reception of information between the components. For example, the HGW 100 may be capable of transmitting / receiving information between the distribution board HD and the load L and transmitting / receiving information between load devices included in the load L.

  Moreover, HGW100 has a function which acquires the electric energy in the house HM. For example, the HGW 100 communicates with the smart meter MT, and acquires the main power amount measured by the smart meter MT, that is, the supplied power amount. Further, the HGW 100 acquires the main power amount measured by the storage battery SB in addition to the storage amount of the storage battery SB, the stored power amount, the discharged power amount, and the like by communicating with the storage battery SB. In addition to communicating with the smart solar panel SPV, the HGW 100 communicates with the smart solar panel SPV, in addition to the amount of electricity stored in the smart solar panel SPV, the amount of power generated by the smart solar panel SPV, etc. To get. Then, the HGW 100 transmits the acquired power storage amount, power generation amount, various power amounts, and the like to the estimation device 10.

  In HEMS, distribution board HD and HGW 100, a management server (not shown), and the like may manage which load device is installed for each branch to which power distribution board HD supplies power. In such a case, the HGW 100 acquires device information of additional information installed at the end of each branch by communicating with the distribution board HD, the management server, and the like, and acquires the electric energy for each branch. The acquired power amount and device information may be transmitted to the estimation device 10.

  The “power amount” in the present description may be a so-called instantaneous value or may be an integrated power amount measured in a predetermined period.

(About estimation processing)
Here, the estimation apparatus 10 estimates the failure of the measurement electrical equipment installed in the house HM by executing the following estimation process. For example, the estimation device 10 is a plurality of electrical devices that respectively measure the amount of power provided through the main trunk of the house HM, and a plurality of electrical devices that perform a predetermined function based on the measured power amount, Collect the amount of power measured by each electrical device. That is, the estimation apparatus 10 collects the amount of power in the trunk (hereinafter, referred to as “principal power amount”) measured by the measurement electrical device to perform various functions. And the estimation apparatus 10 estimates the measurement electric equipment which failed out of the measurement electric equipment based on the comparison result of the collected electric energy.

  Hereinafter, an example of an estimation process executed by the estimation apparatus 10 will be described with reference to FIG. First, the estimating apparatus 10 acquires the main power amount measured by each device (step S1). For example, the estimation apparatus 10 acquires the main power amount measured by the smart meter MT, the storage battery SB, and the smart solar panel SPV that are measurement electric devices via the HGW 100. More specifically, the estimation apparatus 10 acquires a time stamp indicating the date and time when the main power is measured, together with the main power measured by each measurement electrical device.

  Then, the estimating apparatus 10 compares the main power amount measured by each device (step S2). More specifically, the estimation apparatus 10 determines whether the plurality of measuring electrical devices are based on the comparison results of the main power amounts measured at the same time (for example, the time stamp difference is within 1 minute). Estimate the failed electrical equipment. For example, the estimation apparatus 10 includes a main power “400 W (watts)” measured by the smart meter MT, a main power “410 W” measured by the smart solar panel SPV, and a main power “200 W” measured by the storage battery SB. To get.

  In such a case, the estimation apparatus 10 compares each main power amount, and specifies a measurement electric device whose measured main power amount is significantly different from other measurement electric devices (step S3). For example, in the example illustrated in FIG. 1, the main power measured by the smart meter MT and the smart solar panel SPV is within a predetermined range (for example, the difference is 50 W or less), whereas the main power measured by the storage battery SB is measured. As for the electric energy, the difference from the electric power measured by the other measurement electric devices exceeds a predetermined range.

  Thus, when only the main power amount measured by the storage battery SB is significantly different from other main power amounts, it is estimated that some failure has occurred in the sensor for measuring the main power amount or the function of the storage battery SB. The Here, since the measurement electrical device exhibits a function such as charging / discharging based on the measured main power amount, there is a possibility that the function cannot be properly displayed when there is an error in the main power amount to be measured.

  Therefore, the estimation device 10 estimates that the measurement electrical device has failed when there is a measurement electrical device having a significantly different measured main power amount compared to other measurement electrical devices. For example, in the example illustrated in FIG. 1, the estimation device 10 estimates that a failure has occurred in the storage battery SB. And the estimation apparatus 10 notifies the failure of storage battery SB with respect to the user terminal 200 which the user U set beforehand uses (step S4).

  As described above, the estimation apparatus 10 can estimate the failure of the measurement electrical device based on the difference in the main power amount measured by the measurement electrical device. For this reason, the estimation apparatus 10 can easily estimate the failure of the apparatus that measures the electric energy.

(About the amount of power to be measured)
Here, in the example mentioned above, the estimation apparatus 10 estimated the measurement electric equipment which failed, by comparing the main electric energy which the measurement electric equipment measured. However, the embodiment is not limited to this. For example, the estimation device 10 measures the amount of power supplied via the same power distribution path other than the main trunk, and the amount of power measured by a plurality of measurement electrical devices that perform various functions based on the measured amount of power Based on the difference, the measurement electrical equipment that has failed may be estimated.

(About failure estimation)
Here, the estimation device 10 estimates that a measured electrical device having a measured main power amount that is different from the other main power amount by a predetermined value out of a plurality of measured electrical devices has failed. In this case, an arbitrary condition and an arbitrary threshold value may be set. For example, the estimation apparatus 10 collects electric energy from three or more measurement electric devices, and the difference between the electric energy measured by any one of the measurement electric devices and the electric energy measured by another plurality of measurement electric devices is calculated. When each exceeds a predetermined threshold value, it may be estimated that a predetermined measurement electrical device has failed.

  For example, the estimating apparatus 10 determines that the difference between the main electric energy measured by the first measuring electric device and the main electric energy measured by the second measuring electric device exceeds a predetermined threshold and the first measuring electric device A difference between the main power amount measured by the device and the main power amount measured by the third measurement electric device exceeds a predetermined threshold, and the main power amount measured by the second measurement electric device; When the difference from the main power amount measured by the measurement electrical device is equal to or less than a predetermined threshold, it may be estimated that the first measurement electrical device has failed. That is, even if the main power is measured at the same time, different values of main power may be measured depending on the accuracy and detection method of the sensor used by each measurement electrical device. Therefore, the estimation apparatus 10 selects, as a reference, a plurality of measurement electrical devices in which the measured main power amount falls within a predetermined range among the plurality of measurement electric devices, and the measured main power amount becomes the selected reference. A measuring electric device that exceeds the main power amount measured by the measuring electric device and a predetermined threshold may be a measuring electric device that has failed.

  Moreover, the estimation apparatus 10 may set the measurement electrical equipment used as a reference | standard beforehand. For example, since the smart meter MT is a device used for calculating the electricity bill, it is considered that the reliability is relatively high. Therefore, the estimation device 10 collects at least the main power amount measured by the smart meter MT. Then, when the difference between the main power amount measured by the measurement electrical device other than the smart meter MT and the power amount measured by the smart meter MT exceeds the predetermined threshold, the estimation device 10 has failed. May be estimated.

  Moreover, the estimation apparatus 10 may estimate a measurement electric device that has failed from the measurement electric devices based on the history of the electric energy measured by each measurement electric device. For example, the estimation apparatus 10 measures the main power amount having the same value as that of other measurement electric devices until a predetermined period, but the main power amount becomes “0 W” after a certain time. May be presumed to be a failed measuring electrical device.

  In addition, the estimation device 10 may estimate a failed measurement electrical device based on a comparison result with the main power amount measured not only in the house HM but also in another house HM. For example, when attributes such as occupation, gender, family composition, age, etc. of a user resident in the house HMa and a user resident in the house HMb are similar, the main power at the same time in the house HMa and the house HMb is Expected to be similar.

  Therefore, the estimation apparatus 10 estimates the failed measurement electrical device based on the comparison result between the main power amount measured by the measurement electric device in the house HMa and the main power amount measured by the measurement electric device in the house HMb. Also good. For example, when the difference between the main power amount measured by the storage battery SB in the house HMa and the main power amount measured by the smart meter MT in the house HMb exceeds a predetermined threshold, it is estimated that the storage battery SB in the house HMa has failed. May be. Further, the estimation device 10 compares the main power amount measured by the storage batteries SB installed in the different houses HM, and the main power amount measured by the predetermined storage battery SB is different from the main power amount measured by the other storage battery SB. In that case, it may be estimated that the predetermined storage battery SB has failed.

  As described above, the estimation apparatus 10 may estimate a failed measurement electrical device based on an arbitrary condition and a threshold as long as the failure measurement electrical device can be estimated.

(About notification of failure)
Here, the estimation apparatus 10 may notify a different notification destination that the measurement electrical device has failed according to the type of the measurement electrical device that has failed. For example, when estimating that the storage battery SB has failed, the estimation device 10 may notify not only the user U associated with the house HM but also the manufacturer of the storage battery SB, a predetermined repairer, and the like. In addition, when it is estimated that the smart meter MT has failed, the estimation device 10 may notify a predetermined administrator such as an electric power supplier that supplies power to the house HM that the smart meter MT has failed. .

(About the functional configuration of the estimation device)
Hereinafter, an example of a functional configuration of the estimation device 10 that exhibits the above-described function will be described with reference to FIG. FIG. 2 is a diagram illustrating an example of a functional configuration included in the estimation apparatus according to the embodiment. In the example illustrated in FIG. 2, the estimation device 10 includes a communication unit 20, a storage unit 30, and a control unit 40.

  The communication unit 20 is a communication unit that performs bidirectional communication between the HGW 100 and the user terminal 200, and is realized by, for example, a NIC (Network Interface Card) or the like.

  The storage unit 30 is a volatile or non-volatile memory included in the estimation device 10 and is realized by a storage device such as a hard disk drive (HDD), a solid state drive (SSD), a flash memory, or a random access memory (RAM). The In the example illustrated in FIG. 2, the power amount history database 31 is registered in the storage unit 30.

  The collected power amount is registered in the power amount history database 31. For example, FIG. 3 is a diagram illustrating an example of information registered in the power amount history database according to the embodiment. In the example illustrated in FIG. 3, the power amount history database 31 includes “facility ID (Identifier)”, “distributed power supply information”, “gateway ID”, “terminal device ID”, “measurement electric device”, “main power amount”. ”And“ date and time information ”are registered.

  Here, the “facility ID” is information for identifying each house HM. Also, “distributed power source information” indicates whether various distributed power sources such as a smart solar panel SPV, a storage battery SB, a fuel cell, and an EV (Electric Vehicle) are installed in the facility indicated by the associated “facility ID”. This is information indicating whether or not. The “gateway ID” is information for identifying a gateway device installed in the facility indicated by the associated “facility ID”, that is, an acquisition device that acquires the power consumption amount, such as the HGW 100. Further, the “terminal device ID” is an identifier of the user terminal 200 that is a transmission destination of the outing notification and the failure notification in the facility indicated by the associated “facility ID”.

  Further, the “measurement electrical device” is information indicating the measurement electrical device that measures the associated main power amount. Further, the “main power amount” is the main power amount measured by the associated “measurement electric device”. The “date and time information” is information indicating the date and time when the associated “main power amount” is measured, that is, a time stamp.

  For example, in the example shown in FIG. 3, the facility history “HMa”, distributed power source information “present”, gateway ID “100a”, terminal device ID “terminal device # 1”, measurement electrical equipment “ Smart meter # 1 ”, main power amount“ main power amount # 1-1 ”, and date information“ date and time # 1-1 ”are registered in association with each other. In such information, the distributed power source is installed in the house HMa indicated by the facility ID “HMa”, the HGW 100a indicated by the gateway ID “100a” is installed, and the transmission destination of various notifications is the terminal device ID “terminal device” "# 1" indicates that the user terminal 200 is indicated. In addition, such information is obtained by the smart meter MT indicated by the measurement electric device “smart meter # 1”, the main power amount “main power amount # 1-1”, and the date and time indicated by the date information “date and time # 1-1”. Shows that it was measured.

  In the example shown in FIG. 3, conceptual values such as “terminal device # 1”, “smart meter # 1”, “main power amount # 1-1”, “date and time # 1-1”, and the like are described. Actually, a character string for identifying the user terminal 200, a character string for identifying the measurement electrical device, a numerical value of the main power amount, a numerical value indicating the date, and the like are registered.

  Returning to FIG. The control unit 40 is an arithmetic device that executes various types of information processing. For example, an electronic circuit such as a CPU (Central Processing Unit) or an MPU (Micro Processing Unit), an ASIC (Application Specific Integrated Circuit), or an FPGA (FieL Programmable). An integrated circuit such as a gate array can be employed. The control unit 40 has an internal memory for storing programs defining various processing procedures and control data, and executes various processes using these. The control unit 40 functions as various processing units by operating various programs.

  In the example illustrated in FIG. 2, the control unit 40 includes a collection unit 41, an estimation unit 42, and a notification unit 43. The collection unit 41 measures the amount of electric power provided via the main trunk, and measures each measurement electric device from a plurality of electric devices that exhibit a predetermined function based on the measured electric energy, that is, the measurement electric device. Collect the amount of power. For example, the collection unit 41 collects the main power amount measured by the smart meter MT, the storage battery SB, or the smart solar panel SPV and date / time information indicating the date and time when the main power amount is measured via the HGW 100. Then, the collection unit 41 registers the collected main power amount in the power amount history database 31.

  Note that the collection unit 41 collects at least the electric energy measured by the smart meter MT when estimating the measurement electric device that has failed based on the main electric energy measured by the smart meter MT. The collection unit 41 collects the main electric energy measured by three or more measurement electric devices when estimating a measurement electric device that has failed based on the comparison result of the main electric energy measured by each measurement electric device. To do. In addition, when the collecting unit 41 estimates a failed measurement electrical device based on a comparison result between the main power amount at the first facility and the main power amount at the second facility, The amount of electric power measured by the measurement facility of the second facility whose attribute is similar to that of the first facility is collected.

  The estimation unit 42 estimates a failed measurement electrical device from the measurement electrical devices based on the collected power amount comparison result. For example, the estimation unit 42 refers to the power amount history database 31 at a predetermined timing, and reads the main power amount measured at the same time by the measurement electrical equipment installed in the same facility. And the estimation part 42 estimates the measurement electric equipment which failed out of the measurement electric equipment based on the comparison result of the read main | storing electric energy. For example, when the difference between the main electric energy measured by a predetermined measurement electric device and the main electric energy measured by another plurality of measurement electric devices exceeds a predetermined threshold (for example, 20 W), the estimation unit 42 It is estimated that a predetermined measuring electrical device has failed.

  Note that the estimation unit 42 may estimate that there is no failed measurement electrical device when the main power amount measured by each measurement electrical device is within a predetermined range. Further, when the main power amount measured by the smart meter MT is used as a reference, the estimation unit 42 calculates a difference between the main power amount measured by the smart meter MT and the main power amount measured by another measurement electric device. However, when the calculated difference exceeds a predetermined threshold, it may be estimated that the other measurement electric device has failed.

  In addition, the estimation unit 42 refers to the power amount history database 31 when estimating the measurement electrical equipment that has failed based on the comparison result between the main power amount in the first facility and the main power amount in the second facility. , Select two or more facilities with similar residing users. Moreover, the estimation part 42 calculates the difference of the main electric energy which the measurement electrical equipment installed in the selected plant | facility measured simultaneously. Then, the estimation unit 42, when there is a measurement electrical device that has a difference from the main power measured by all other measurement electrical devices exceeding a predetermined threshold (for example, 40 W), the measurement electrical device has failed. May be estimated. Note that the estimation unit 42 is installed in a different house HM from a threshold value (hereinafter referred to as “in-facility threshold”) when comparing the main power amount measured by the measurement electrical equipment installed in the same house HM. Different threshold values may be adopted for the threshold value (hereinafter referred to as “outside facility threshold value”) for comparing the main power amounts measured by the measured electric appliances. For example, the estimation unit 42 may employ a value larger than the in-facility threshold value as the out-facility threshold value.

  Note that the estimation unit 42 determines the difference from the main power amount measured by the smart meter MT, the difference from the main power amount measured by another measurement electric device, and the main meter measured by the measurement electric device installed in another facility. When calculating the difference between the electric energy and setting different weights for the calculated difference, calculating the probability that the measured electrical equipment has failed, and the calculated accuracy exceeds a predetermined threshold May estimate that the measuring electrical equipment has failed.

  The notification unit 43 notifies a predetermined administrator that the smart meter MT has failed when it is estimated that the smart meter MT has failed among the plurality of measurement electrical devices. For example, when it is estimated that the measurement electrical device installed in the house HMa has failed, the notification unit 43 refers to the power amount history database 31 and the user terminal 200 of the user U associated with the house HMa. Is identified. And the notification part 43 transmits the message which shows the measurement electric equipment estimated to have failed to the specified user terminal 200.

  On the other hand, the notification unit 43 refers to the power amount history database 31 when the measurement electric device estimated to have failed is the smart meter MT, and refers to the house HM in which the smart meter MT estimated to have failed is installed. Identify. Then, the notification unit 43 notifies a message indicating that the smart meter MT has failed to the power company that supplies power to the identified house HM.

(About an example of the flow of estimation processing)
Next, an example of the flow of estimation processing executed by the estimation apparatus 10 according to the embodiment will be described with reference to FIG. FIG. 4 is a flowchart illustrating an example of a flow of estimation processing executed by the estimation apparatus according to the embodiment.

  For example, the estimating apparatus 10 collects the main power amount measured by a plurality of measurement electrical devices (step S101). Subsequently, the estimating apparatus 10 compares the values of the main power measured at the same time (Step S102). Then, the estimating apparatus 10 determines whether there is a measurement electrical device whose difference exceeds a predetermined threshold (step S103).

  Here, when there is a measurement electrical device whose difference exceeds a predetermined threshold (step S103: Yes), the estimation device 10 estimates the measurement electrical device whose difference exceeds the threshold as a failed device (step S104). A failure of the measuring electrical device is notified (step S105), and the process is terminated. On the other hand, when there is no measurement electrical device whose difference exceeds a predetermined threshold (step S103: No), the estimation device 10 ends the process as it is.

[Modification]
(About facilities)
In embodiment mentioned above, the estimation apparatus 10 estimated the failure of the measurement electric equipment from the main electric energy in the house HM as a facility. However, the embodiment is not limited to this. For example, the estimation device 10 may estimate the failure of the measurement electric device from the main power amount in any facility such as a factory, an office, a store, an event venue, etc., whether permanent or temporary, in addition to the house HM.

(About measuring electrical equipment)
In embodiment mentioned above, the estimation apparatus 10 acquired the main electric energy which the smart meter MT, the storage battery PB, and the smart solar panel SPV measured as measurement electric equipment. However, the embodiment is not limited to this. For example, as long as the measuring apparatus 10 is an electric device that measures the main power amount, any electric device may be used as the measuring electric device. For example, the estimation apparatus 10 may employ various energy measurement units such as a distribution board HD having a function of measuring the main power amount, that is, a distribution board with a measurement function, as the measurement electrical equipment.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10 Estimation apparatus 20 Communication part 30 Storage part 31 Electric energy history database 40 Control part 41 Collection part 42 Estimation part 43 Notification part 100, 100a, 100b HGW
200 User terminal MT Smart meter SPV Smart solar panel PV Solar panel PC Control unit PB Storage battery SB Storage battery SBC Control unit B Power storage unit HD Distribution board L Load

Claims (10)

A collecting unit that measures the amount of electric power provided via the trunk and collects the amount of electric power measured by each electric device from a plurality of electric devices that perform a predetermined function based on the measured electric energy;
An estimation unit that estimates a faulty electrical device from among the electrical devices based on a comparison result of the amount of power collected by the collection unit;
The estimation apparatus characterized by having. The estimation device according to claim 1, wherein the collection unit collects the amount of power measured by a smart meter, a storage battery, or a solar power generation device as the electrical device. The collection unit collects, from the plurality of electrical devices, the amount of power measured by each electrical device and date / time information indicating the date and time when the amount of power was measured,
The said estimation part estimates the electric equipment which failed from the said electric equipment based on the comparison result of the electric energy which the said several electric equipment measured at the same period. The Claim 1 or 2 characterized by the above-mentioned. Estimating device. The said estimation part estimates the electric equipment which failed out of the said electric equipment based on the log | history of the electric energy which the said some electric equipment measured. Any one of Claims 1-3 characterized by the above-mentioned. The estimation apparatus described in 1. The collecting unit collects at least the electric energy measured by the smart meter,
The estimation unit estimates that the electrical device has failed when the difference between the amount of power measured by the electrical device and the amount of power measured by the smart meter exceeds a predetermined threshold. The estimation apparatus according to any one of Items 1 to 4. The collection unit collects the amount of power from three or more electrical devices,
The estimation unit estimates that the predetermined electric device has failed when the difference between the electric energy measured by the predetermined electric device and the electric energy measured by another plurality of electric devices exceeds a predetermined threshold value, respectively. The estimation apparatus according to any one of claims 1 to 5, wherein: A notification unit for notifying a predetermined administrator that a smart meter has failed when it is estimated that a smart meter has failed among the plurality of electrical devices;
The estimation apparatus according to claim 1, wherein the estimation apparatus includes: The collecting unit measures the amount of electric power provided via the main in the first facility, and electric for measuring the amount of electric power provided through the main in the second facility having similar attributes to the first facility. The amount of electric power measured by the device is collected. The estimation device according to any one of claims 1 to 7, An estimation method executed by an estimation device,
A collecting step of measuring the amount of electric power provided via the trunk and collecting the amount of electric power measured by each electric device from a plurality of electric devices performing a predetermined function based on the measured electric energy;
An estimation step of estimating a failed electrical device from the electrical devices based on a comparison result of the amount of power collected in the collection step;
An estimation method including A collection procedure for measuring the amount of power provided to each computer via the main trunk, and collecting the amount of power measured by each electrical device from a plurality of electrical devices performing a predetermined function based on the measured amount of power;
An estimation procedure for estimating a faulty electrical device from among the electrical devices based on a comparison result of the amount of power collected in the collection procedure;
An estimation program that executes

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