JP2019176685A - Providing device, providing method and providing program - Google Patents

Abstract

To provide a providing device, a providing method and a providing program, which warn a user of an overload state when power is supplied from a system.SOLUTION: A providing device (a power conditioner 100) comprises a providing unit 135 that, when power is supplied from a system, provides a user with information based on the value of electric current supplied to a load to which power is supplied from a distribution power source when power is not supplied from the system. The providing unit provides information based on the value of an electric current supplied to the load from a power generator that generates power on the basis of natural energy, as a distribution power source.SELECTED DRAWING: Figure 2

Description

  Embodiments described herein relate generally to a providing apparatus, a providing method, and a providing program.

  2. Description of the Related Art In recent years, with the spread of solar power generation technology, power storage systems that use electric power by generating power and charging by installing power generation equipment such as solar panels and storage batteries in a house have increased. The power storage system performs control so that the power stored in the storage battery is supplied to the load at the time of a power failure when the power supply from the commercial power supply is stopped.

  The power storage system described in Non-Patent Document 1 stores the power generated by the power generation device in a storage battery. In addition, the power storage system supplies, to a load, power output by a solar power generation device including a solar panel or the like by a self-sustaining operation function at the time of a power failure.

“Toshiba Electric Construction Materials 2017-2018”, [online], [Search September 15, 2017], Internet <URL: http://page2.cextension.jp/c4089/book/>

  By the way, in the event of a power outage, the power supply from the grid stops, so the power storage system can supply power that has been pre-charged from the grid or power that has been charged from the stand-alone operation output of the photovoltaic power generator to the load connected to the stand-alone operation output. To self-discharge. That is, at the time of a power failure, the discharge power of the power storage system and the self-sustained output power of the solar power generation device are supplied to the load connected to the self-sustained operation output.

  However, the power that can be supplied to the load from the discharge power of the power storage system and the self-sustained output power of the photovoltaic power generator during a power failure is limited. For example, when the power connected to the self-sustained operation output is not less than the maximum discharge power of the power storage system or more than the maximum self-sustained output power of the photovoltaic power generator, the power storage system is Suppose that it was switched to independent operation. In such a case, an overload (overcurrent) state occurs, and the self-sustaining operation of the power storage system or the solar power generation device is not normally performed. In addition, when the overcurrent is detected, the power storage system determines that an abnormality has been detected and stops operation. That is, the power storage system does not supply power to the load.

  As described above, in order to prevent troubles from occurring during the power failure, it is necessary for the user to recognize in advance how to operate the load during the power failure.

  The problem to be solved by the present invention is to provide a providing device, a display control method, and a display control program that can warn a user that an overload condition occurs when power is supplied from a system. .

  The providing apparatus according to the embodiment includes a providing unit. The providing unit is based on a current value corresponding to the power supplied to the load to which power is supplied from the distributed power source when power is supplied from the system and when power is not supplied from the system. Provide information to users.

FIG. 1 is a diagram illustrating an example of a configuration of a power storage system according to the embodiment. FIG. 2 is a diagram illustrating an example of a configuration of a power conditioner included in the power storage system according to the embodiment. FIG. 3 is a diagram illustrating an example of the threshold information storage unit according to the embodiment. FIG. 4 is a diagram illustrating an example of a measurement result storage unit according to the embodiment. FIG. 5 is a diagram showing a graph (1) on which the determination results are plotted. FIG. 6 is a diagram illustrating a graph (2) on which the determination results are plotted. FIG. 7 is a diagram showing a graph (3) on which the determination results are plotted. FIG. 8 is a diagram showing a graph (4) on which the determination results are plotted. FIG. 9 is a flowchart illustrating a control processing procedure by the power conditioner according to the embodiment.

  The providing device (for example, the power conditioner 100) according to the embodiment described below includes a providing unit 135. The providing unit 135 uses information based on a current value supplied to the load LD to which power is supplied from the distributed power source when power is supplied from the system CP when power is not supplied from the system CP when power is not supplied. Provided to

  In addition, in the providing device (power conditioner 100) according to the embodiment described below, the providing unit 135 sets the current value supplied to the load LD from the power generation device PN that generates power based on natural energy as a distributed power source. Based information.

  Further, in the providing device (power conditioner 100) according to the embodiment described below, the providing unit 135 sets the first threshold value at which the current value supplied to the load LD is a current value that can be supplied by the power generation device PN. When it is determined that the threshold value has been exceeded, information on overcurrent based on the first threshold is provided to the user.

  In the providing device (power conditioner 100) according to the embodiment described below, the providing unit 135 determines that the current value predicted based on the peak value of the current value supplied to the load LD is the first threshold value. When it is determined that the value exceeds the threshold value, information on overcurrent based on the first threshold is provided to the user.

  Further, in the providing apparatus (power conditioner 100) according to the embodiment described below, the providing unit 135 determines that the current value predicted based on the average value of the current values supplied to the load LD has the first threshold value. When it is determined that the threshold value has been exceeded, information on overcurrent based on the first threshold is provided to the user.

  Further, in the providing device (power conditioner 100) according to the embodiment described below, the providing unit 135 provides information based on a current value supplied from the chargeable / dischargeable power storage device 50 to the load LD as a distributed power source. To do.

  In the providing device (power conditioner 100) according to the embodiment described below, the providing unit 135 provides the second value in which the current value supplied to the load LD is the current value at which the power storage device 50 supplies power for a certain period. When it is determined that the threshold value is exceeded, information on overcurrent based on the second threshold value is provided to the user.

  Further, in the providing device (power conditioner 100) according to the embodiment described below, the providing unit 135 determines that the current value predicted based on the peak value of the current value supplied to the load LD has the second threshold value. When it is determined that the threshold value has been exceeded, the information regarding the overcurrent based on the second threshold is provided to the user.

  Further, in the providing apparatus (power conditioner 100) according to the embodiment described below, the providing unit 135 determines that the current value predicted based on the average value of the current values supplied to the load LD has the second threshold value. When it is determined that the threshold value has been exceeded, the information regarding the overcurrent based on the second threshold is provided to the user.

  In the providing device (power conditioner 100) according to the embodiment described below, the providing unit 135 has a current value supplied to the load LD higher than the second threshold value, and the power storage device 50 supplies power. When it is determined that the third threshold value, which is a current value that does not occur, is exceeded, information on overcurrent based on the third threshold value is provided to the user.

  Further, in the providing apparatus (power conditioner 100) according to the embodiment described below, the providing unit 135 determines that the current value predicted based on the peak value of the current value supplied to the load LD has the third threshold value. When it is determined that the threshold value has been exceeded, the information regarding the overcurrent based on the third threshold value is provided to the user.

  In the providing device (power conditioner 100) according to the embodiment described below, the providing unit 135 determines that the current value predicted based on the average value of the current values supplied to the load LD has a third threshold value. When it is determined that the threshold value has been exceeded, the information regarding the overcurrent based on the third threshold value is provided to the user.

  Hereinafter, embodiments of a providing device, a providing method, and a providing program according to the present invention will be described in detail 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.

(Embodiment)
First, a power storage system including a providing device according to the embodiment receives a supply of a predetermined power system, for example, a commercial power supply (CP), and supplies power to a load (LD) such as a home appliance. The power storage system supplies power generated by a power generation device using natural energy such as a solar panel to a load such as a home appliance. In addition, the power storage system stores power supplied from a commercial power source and power generated by the power generation device in a power storage device such as a storage battery. When the power supply by the power system (commercial power supply) is stopped due to a power failure or the like, the power storage system performs a self-sustained operation by discharging the power stored in the power storage device and supplying it to the load. In addition, when the power generation device can generate power during a power failure, the power storage system detects a self-sustained output generated from the self-sustained operation terminal of the power generation device. The power storage system supplies the power generated by the power generation device to the load and stores the surplus in the power storage device. Hereinafter, the commercial power supply may be referred to as “system CP”.

  And when the power supply by an electric power grid | system (commercial power supply) stops by the power failure etc., the provision apparatus concerning embodiment uses a household appliance unnecessarily, for example, a household appliance will be in an overload state. This prevents problems in the power storage system. Specifically, when a user uses home appliances in such a way that a failure occurs in the power storage system during a power failure when power is supplied from the power system (commercial power supply), In usage, it warns that a malfunction occurs in the power storage system during a power failure. In this manner, the providing device prevents the user from having a malfunction in the power storage system at the time of a power failure by causing the user to recognize in advance how the home appliance should be operated at the time of the power failure.

[Example of Configuration of Power Storage System According to Embodiment]
FIG. 1 is a diagram illustrating an example of a configuration of a power storage system 1 according to the embodiment. In the example of FIG. 1, the power storage system 1 is provided in the home HM of the user (customer) and consumes, for example, power generated by the solar panel PN (power generation device) installed on the roof in the home HM. Or can be stored in a storage battery (power storage device) 50.

  As shown in FIG. 1, the power storage system 1 includes a solar panel PN, a connection box BX, a power conditioner 100, a controller 200 having an output unit 210 and an input unit 220, a storage battery 50, and a distribution board DP. And a power meter MT. Further, in the power storage system 1 shown in FIG. 1, the controller 200 (or the power conditioner 100) can be connected to the Internet and can send and receive information to and from various information processing apparatuses outside the power storage system 1. May be.

  The solar panel PN is an example of a power generator that can generate electric power based on natural energy. The solar panel PN is a solar cell module in which, for example, a required number of solar cell elements (cells) are arranged and packaged with resin, tempered glass, or the like, and is also called a solar panel. In addition, what kind of cell may be sufficient as the cell used for solar panel PN. For example, as the cell used in the solar panel PN, various cells such as a silicon cell, a compound cell, and an organic cell may be appropriately selected depending on the purpose. Moreover, although this embodiment demonstrates using the solar panel PN as an example of an electric power generating apparatus, if the electric power can be produced | generated using natural energy, the electric power generating apparatus of this embodiment will be sunlight. It is not limited to the panel PN. The power generation device may be a device that generates electric power using gas, wind power, hydraulic power, or the like, for example. In addition, when a device that generates power using gas, wind power, hydraulic power, or the like is used as a power generation device, power control is performed based on the timing of starting power generation using gas, wind power, hydraulic power, or the like. In the following description, a photovoltaic power generation device is also called a PV (Photovoltaic) device, and a power generation state using solar power generation is also called a PV state.

  The connection box BX is a device that collects power generated by the solar panel PN, for example. For example, the connection box BX aggregates a plurality of wires from the solar panel PN into one and transmits it to the power conditioner 100. The connection box BX may be integrated with the power conditioner 100.

  The power conditioner 100 is also called a power conditioner or a PCS (Power Conditioning System). The power conditioner 100 is a device that makes it possible to use the power transmitted from the solar panel PN via the connection box BX in the electrical device LD in the house HM. For example, the power conditioner 100 converts DC power transmitted from the solar panel PN via the connection box BX into AC power. In addition, for example, after converting into AC power, the power conditioner 100 adjusts the power to an output corresponding to use in the house HM, charging the storage battery 50, selling power to the commercial power supply CP, and the like. The power conditioner 100 of the present embodiment is a control device that controls the discharge and charging of the storage battery 50 and causes the power storage device 50 to self-sustain discharge during a power failure. In the present embodiment, it is assumed that the power conditioner 100 has the function of the providing device according to the embodiment.

  The controller 200 notifies the user of various types of information in the power storage system 1 and accepts user operations on the power storage system 1. The controller 200 is a device capable of transmitting / receiving information to / from the power conditioner 100. For example, the controller 200 is a device called HGW (Home Gate Way), and is a device that can communicate with an external cloud server CS via various networks such as the Internet. For example, the controller 200 collects information such as the power consumption of each home appliance, the amount of power generated by the solar panel PN, the amount of power stored in the storage battery 50, and the function of providing each collected information to the cloud server CS. Have. Further, the controller 200 has a function of controlling the charging / discharging operation of the storage battery 50 and the operation of each home appliance according to the control command received from the cloud server CS. In addition, these functions are realizable by well-known techniques, such as HEMS (Home Energy Management System), for example.

  Here, the controller 200 includes an output unit 210 that can output various types of information. The controller 200 also includes an input unit 220 that receives an instruction input from the user. The output unit 210 of the controller 200 may have a configuration and a function for displaying information by sound or image. For example, the output unit 210 may be a monitor that displays information or a speaker that outputs information as sound. The output unit 210 outputs various information received from the power conditioner 100, for example. For example, the output unit 210 displays information related to the remaining amount of the storage battery 50. Further, for example, the output unit 210 outputs an alert (described later) for notifying the user that the discharge from the storage battery 50 is stopped by voice or an image. Further, for example, the output unit 210 may output a message prompting the user to select an operation mode (described later) by voice or an image.

  The input unit 220 of the controller 200 receives an input corresponding to an alert or message output from the output unit 210. For example, the user can input an instruction for an alert or a message or input an operation mode selection instruction from the input unit 220. The input unit 220 is a device that can accept external input such as a keyboard, a touch panel, and a microphone. Note that the controller 200 may be integrated with the power conditioner 100.

  The storage battery 50 is a secondary battery (battery) used in the house HM. For example, the storage battery 50 is charged with electric power supplied from the power conditioner 100. For example, the storage battery 50 supplies the stored electric power to the electric device LD in the house HM via the power conditioner 100 and the distribution board DP. The storage battery 50 may be any battery as long as it can store electricity by charging and can be repeatedly charged and discharged. For example, as the storage battery 50, various storage batteries 50, such as a lithium ion battery, a lead battery, and a nickel metal hydride battery, may be appropriately selected. The storage battery 50 may have any configuration as long as it has a function of storing electric power, and may be, for example, an electric vehicle, a plug-in hybrid vehicle, or the like.

  The distribution board DP is a device that divides electricity into the wiring of the house HM. For example, the distribution board DP includes various devices such as an earth leakage breaker and a wiring breaker. For example, the distribution board DP supplies the electric power converted into alternating current by the power conditioner 100 to the electric device LD of the house HM, or supplies the surplus power generated in the solar panel PN to the commercial power supply CP of the electric power company. Or supply to. For example, the distribution board DP supplies the electric power supplied from the commercial power supply CP to the electrical equipment LD of the house HM when purchasing power, that is, when receiving power from the commercial power supply CP.

  The power meter MT is a meter that measures the power supplied to the commercial power supply CP side, that is, the power sold, or the power supplied from the commercial power supply CP, that is, the power purchased from the commercial power supply CP. For example, the power meter MT may include a meter that measures the sold power and a meter that measures the purchased power. For example, the power meter MT is provided between the distribution board DP and the commercial power supply CP, and measures the sold power or the purchased power.

  In the following embodiments, the supply time when power is supplied from the system CP may be referred to as “normal time”. In addition, when power is not supplied from the system CP, there is a case where it is expressed as “power failure”.

[Example of configuration of power conditioner 100]
FIG. 2 is a diagram illustrating an example of a configuration of the power conditioner 100 included in the power storage system 1 according to the embodiment. As shown in FIG. 2, the power conditioner 100 includes a communication unit 110, a storage unit 120, and a control unit 130. The power conditioner 100 is an example of a providing device.

  The communication unit 110 is realized by a predetermined communication circuit, for example. For example, the communication unit 110 can communicate with the controller 200.

  The storage unit 120 is realized by, for example, a semiconductor memory element such as a RAM (Random Access Memory) or a flash memory, or a storage device such as a hard disk or an optical disk. As illustrated in FIG. 2, the storage unit 120 according to the embodiment includes a threshold information storage unit 121 and a measurement result storage unit 122.

[About threshold information storage unit 121]
The threshold information storage unit 121 stores threshold information used to determine whether the PV device and the power storage device 50 normally operate when power is not supplied from the system CP. Here, FIG. 3 shows an example of the threshold information storage unit 121 according to the embodiment. In the example of FIG. 3, the threshold information storage unit 121 includes “peak threshold (A)” and “average threshold (A) for each of three items such as“ PV cooperation determination ”,“ intermediate determination ”, and“ abnormality determination ”. ”.

  “Peak threshold (A)” and “average threshold (A)” associated with “PV cooperation determination” indicate threshold information used for “PV cooperation determination”. First, “PV cooperation determination” will be described. “PV cooperation determination” is to determine whether or not the PV device can operate normally. This will be described more specifically. In the power storage system 1, the power acquired from the system CP is supplied to the load LD at normal times, but this supply is lost at the time of a power failure. Therefore, the PV device outputs power to the load LD connected to the self-sustained operation output by the self-sustained operation function at the time of a power failure. However, there is a limit to the power that the PV device can supply to the load LD by the self-sustaining operation function at the time of a power failure. For example, the PV device has a limit on the power that can be supplied according to the standard and number of solar cell elements, the rating of a circuit that outputs generated power to the outside, and the like.

  For example, when the PV device exceeds this limit and outputs electric power, an overcurrent state occurs, and the PV device cannot normally operate independently. In other words, a malfunction occurs in the PV device. For this reason, the “PV cooperation determination” is to determine whether or not the PV device can operate normally even when power is not supplied from the system CP.

  For example, when the current value predicted based on the current value measured by the measurement unit 133 described later exceeds “peak threshold (A)” or “average threshold (A)” associated with “PV cooperation determination” Indicates an overcurrent due to a current generated by the self-sustained output power of the PV device, suggesting that the PV device has a problem during a power failure.

  Here, “peak threshold (A)” associated with “PV cooperation determination” is an example of “first threshold”, and is a current value that can be supplied by the PV device during a power failure. More specifically, the “peak threshold value (A)” is a peak value of a current value that can be supplied by the PV device during a power failure. For example, how much current is generated by the PV device at the time of a power failure can be predicted in advance from history information and the like so far. Therefore, the “peak threshold (A)” associated with “PV cooperation determination” is set in advance based on the current value predicted from the history information and the like.

  The “average threshold (A)” associated with “PV cooperation determination” is another example of the “first threshold”, and is a current value that can be supplied by the PV device during a power failure. More specifically, the “average threshold (A)” is an average value of current values that can be supplied by the PV device during a power failure. For example, how much current is generated by the PV device at the time of a power failure can be predicted in advance from history information and the like so far. Therefore, the “average threshold (A)” associated with “PV cooperation determination” is set in advance based on the current value predicted from the history information and the like.

  In the present embodiment, two thresholds such as “peak threshold (A)” and “average threshold (A)” associated with “PV cooperation determination” are shown as “first threshold”. The “threshold value 1” may be either “peak threshold value (A)” or “average threshold value (A)”.

  Next, “intermediate determination” will be described. “Intermediate determination” is to determine whether or not the power storage device 50 can operate normally. This will be described more specifically. In the power storage system 1, the power acquired from the system CP is supplied to the load LD at normal times, but this supply is lost at the time of a power failure. Therefore, power storage device 50 discharges to load LD by self-sustained discharge during a power failure. However, there is a limit to the power that power storage device 50 can supply to load LD by self-sustained discharge during a power failure. For example, the power storage device 50 has a limit on the power that can be safely discharged according to the standard of the discharge circuit of the power storage device 50, the standard of the battery cell that stores power, and the like.

  For example, when the power storage device 50 exceeds this limit and outputs electric power, an overcurrent state occurs, and the power storage device 50 cannot perform normal operation normally. In other words, a problem occurs in the power storage device 50. For this reason, the “intermediate determination” determines whether or not the power storage device 50 can supply power normally for a certain period of time when power is not supplied from the system CP and is not supplied. That is.

  For example, when the current value predicted based on the current value measured by the measurement unit 133 described later exceeds “peak threshold (A)” or “average threshold (A)” associated with “intermediate determination” The current generated by the self-sustained discharge power of the power storage device 50 at the time of a power failure can flow for a certain period, but eventually it becomes an overcurrent, suggesting that the power storage device 50 has a problem.

  Here, “peak threshold value (A)” associated with “intermediate determination” is an example of “second threshold value”, and is a current value at which power storage device 50 supplies power for a certain period during a power failure. More specifically, the “peak threshold (A)” is a peak value of a current value corresponding to electric power that the power storage device 50 can supply for a certain period during a power failure. For example, it can be predicted in advance from historical information and the like that how much current is generated by the power storage device 50 during a power failure and how long the power storage device 50 is defective. Therefore, the “peak threshold (A)” associated with “intermediate determination” is set in advance based on the current value predicted from the history information and the like.

  The “average threshold (A)” associated with “intermediate determination” is another example of the “second threshold”, and is a current value at which the power storage device 50 supplies power for a certain period during a power failure. More specifically, the “average threshold (A)” is an average value of current values corresponding to power that the power storage device 50 can supply for a certain period during a power failure. For example, it can be predicted in advance from historical information and the like that how much current is generated by the power storage device 50 during a power failure and how long the power storage device 50 is defective. Therefore, the “average threshold (A)” associated with “intermediate determination” is set in advance based on the current value predicted from the history information and the like.

  Finally, “abnormality determination” will be described. “Abnormality determination” refers to determining whether or not the power storage device 50 can operate normally. As described above, there is a limit to the power that the power storage device 50 can supply to the load LD by self-sustained discharge during a power failure.

  For example, when the power storage device 50 exceeds this limit and outputs electric power, an overcurrent state occurs, and the power storage device 50 cannot perform normal operation normally. In other words, a problem occurs in the power storage device 50. For this reason, “abnormality determination” is to determine whether or not the power storage device 50 can normally supply power when power is not supplied from the system CP.

  The “intermediate determination” is to determine whether or not the power storage device 50 can supply power normally for a certain period when power is not supplied from the system CP. “Abnormality determination” is to determine whether or not the power storage device 50 is abnormal due to an overcurrent without a certain period of time.

  Here, “peak threshold value (A)” associated with “intermediate determination” is an example of “third threshold value”, and is higher than “second threshold value” and current at which power storage device 50 stops supplying power. Value. More specifically, the “peak threshold (A)” is a peak value of a current value at which the power storage device 50 stops supplying power during a power failure. As described so far, the “peak threshold (A)” is set in advance based on the current value predicted from the history information or the like.

  In addition, “average threshold (A)” associated with “intermediate determination” is an example of “third threshold”, and is higher than “second threshold”, and is a current value at which power storage device 50 stops supplying power. It is. More specifically, the “average threshold (A)” is an average value of current values at which the power storage device 50 stops supplying power during a power failure. As described so far, the “average threshold (A)” is set in advance based on the current value predicted from the history information or the like.

[Measurement result storage unit 122]
The measurement result storage unit 122 stores a current value based on the current value measured by the measurement unit 133. For example, the measurement result storage unit 122 stores a current value (current value at the time of power failure) predicted based on the current value measured by the measurement unit 133. Here, FIG. 4 shows an example of the measurement result storage unit 122 according to the embodiment. In the example of FIG. 4, the measurement result storage unit 122 includes items such as “peak current” and “average current” for every hour period (for example, 1 o'clock range) on each date. More specifically, the measurement result storage unit 122 includes items such as “peak current” and “average current” corresponding to “self-sustaining operation current”, and “peak current” and “average current” corresponding to “self-sustaining discharge current”. Have

  The “self-sustaining operation current” is a current corresponding to the electric power that the PV device outputs to the load LD by the self-sustaining operation function at the time of power failure. Therefore, the “peak current” associated with the “self-sustaining operation current” is the highest current value among the current values indicated by the “self-sustaining operation current”. For example, the “peak current” at 0:00 on February 1 is the highest current value among the current values of each “independent operation current” measured at 0:00 on February 1. “Peak current” is used for comparison with a peak threshold.

  Further, “average current” associated with “self-sustaining operation current” is an average value of current values indicated by “self-sustaining operation current”. For example, the “average current” at 0:00 on February 1 is an average value obtained by averaging the current values of the “self-supporting operation currents” measured at 0:00 on February 1. “Average current” is used for comparison with an average threshold.

  Further, the “self-supporting discharge current” is a current corresponding to the electric power discharged from the power storage device 50 to the load LD by the self-supporting discharge at the time of power failure. Therefore, the “peak current” associated with the “self-supporting discharge current” is the highest current value among the current values indicated by the “self-supporting discharge current”. For example, the “peak current” at 0:00 on February 1 is the highest current value among the current values of each “independent discharge current” measured at 0:00 on February 1.

  The “average current” associated with the “self-sustained discharge current” is an average value of the current values indicated by the “self-supporting discharge current”. For example, the “average current” at 0:00 on February 1 is an average value obtained by averaging the current values of the “self-supporting discharge currents” measured at 0:00 on February 1.

[Configuration Example of Control Unit 130 of Power Conditioner 100]
Returning to FIG. 2, the control unit 130 of the power conditioner 100 will be described. The control unit 130 controls the operation and function of each unit of the power conditioner 100. The control unit 130 has an internal memory that stores a program that defines various processing procedures and the like, and controls various processes. For example, the control unit 130 may be an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), a central processing unit (CPU), or a micro processing unit (MPU). In the example of FIG. 2, the control unit 130 includes a system detection unit 131, a power generation detection unit 132, a measurement unit 133, a determination unit 134, and a provision unit 135.

[About system detector 131]
The system detection unit 131 detects the presence or absence of power supply from the system CP, which is a commercial power supply, at predetermined time intervals. For example, when the system detection unit 131 detects that power is supplied from the system, the system detection unit 131 causes the measurement unit 133 to start measuring the current value.

[About the power generation detection unit 132]
The power generation detection unit 132 detects the presence or absence of power generation by the solar panel PN at predetermined time intervals. In addition, the power generation detection unit 132 detects the presence or absence of power supply from the PV device at predetermined time intervals.

[Measurement unit 133]
The measuring unit 133 measures a current value corresponding to the power supplied to the load LD when supplying power from the system CP. For example, the measurement unit 133 measures a current value corresponding to the power supplied from the PV device to the load LD at the time of supply in which power is supplied from the system CP. Measurement unit 133 measures a current value corresponding to the power supplied from power storage device 50 to load LD at the time of supply when power is supplied from system CP.

  More specifically, the measurement unit 133 measures the peak value of the current value corresponding to the power supplied from the PV device to the load LD when the power is supplied from the system CP. Or the measurement part 133 measures the average value of the electric current value corresponding to the electric power supplied from PV apparatus to load LD at the time of the supply in which electric power is supplied from system | strain CP.

  In addition, measurement unit 133 measures the peak value of the current value corresponding to the power supplied from power storage device 50 to load LD when power is supplied from system CP. Alternatively, measurement unit 133 measures the average value of the current values corresponding to the power supplied from power storage device 50 to load LD at the time of supply when power is supplied from system CP.

  For example, the measurement unit 133 measures a current value corresponding to the power supplied from the PV device to the load LD for each time period of each date. For example, the measurement unit 133 measures the current value corresponding to the power supplied from the PV device to the load LD at a predetermined time interval (for example, every minute) for each time period of each date, and measures the measured current. The highest value among the values is defined as the peak value in that time zone. Alternatively, the measurement unit 133 measures the current value corresponding to the power supplied from the PV device to the load LD at each predetermined time interval at a predetermined time interval (for example, every minute), and measures the measured current. The average value is the average value for the time period.

  Further, for example, the measurement unit 133 measures the current value corresponding to the power supplied from the power storage device 50 to the load LD for each time period of each date at a predetermined time interval (for example, every minute), The highest measured current value is defined as the peak value in that time zone. Alternatively, the measurement unit 133 measures and measures the current value corresponding to the power supplied from the power storage device 50 to the load LD at predetermined time intervals (for example, every minute) for each time period of each date. Let the average value of an electric current value be the average value in the time slot | zone.

  If it demonstrates using the example of FIG. 1, if the measurement part 133 will receive the electric power transmitted by the junction box BX, the electric current value corresponding to the received electric power will respond | correspond to the electric power supplied to load LD from PV apparatus. Measure as current value. Further, when receiving power transmitted from power storage device 50, measurement unit 133 measures the current value corresponding to the received power as the current value corresponding to the power supplied from power storage device 50 to load LD. Further, the measurement unit 133 stores the measured current value in the measurement result storage unit 122.

  Note that the measurement unit 133 supplies the current value corresponding to the power supplied from the PV device to the load LD based on the power value detected by the sensor SS shown in FIG. A current value corresponding to the generated power may be measured. The sensor SS is a device that detects electric power supplied to the load LD via the distribution board DP.

[About determination unit 134]
The determination unit 134 determines whether or not the current value exceeds a threshold value. For example, the determination unit 134 calculates a current value corresponding to the power supplied from the distributed power source to the LD load when the power is not supplied from the system CP based on the current value measured by the measurement unit 133. Predict. Such a load LD is, for example, a selected load LD to which power is supplied during a self-sustained operation due to a power failure. For example, the determination unit 134 predicts a current value corresponding to the power supplied from the PV device to the load LD as a distributed power source based on the current value measured by the measurement unit 133. Further, the determination unit 134 predicts a current value corresponding to the power supplied from the power storage device 50 to the load LD as a distributed power source based on the current value measured by the measurement unit 133.

  More specifically, the determination unit 134 predicts the peak value of the current value corresponding to the power supplied from the PV device to the load LD based on the peak value of the current value measured by the measurement unit 133. Alternatively, the determination unit 134 predicts the average value of the current values corresponding to the power supplied from the PV device to the load LD based on the average value of the current values measured by the measurement unit 133.

  Further, the determination unit 134 predicts the peak value of the current value corresponding to the power supplied from the power storage device 50 to the load LD based on the peak value of the current value measured by the measurement unit 133. Alternatively, determination unit 134 predicts an average value of current values corresponding to power supplied from power storage device 50 to load LD based on the average value of current values measured by measurement unit 133.

  For example, the determination unit 134 predicts the peak value or the average value for each time period of each date. As an example, the determination unit 134 predicts the current value itself measured by the measurement unit 133 as a current value when no power is supplied from the system CP. As another example, the determination unit 134 performs a predetermined weighting on the current value measured by the measurement unit 133 as a current value when no power is supplied from the system CP. Predict.

  Then, when the current value is predicted as described above, the determination unit 134 determines whether or not the predicted current value has exceeded a threshold value. Here, for example, it is assumed that the peak value of the PV device at the time of supply is measured by the measurement unit 133 for each time zone of each date. In addition, it is assumed that the peak value of the power storage device 50 at the time of supply is measured by the measurement unit 133 for each time zone of each date.

  In such a case, the determination unit 134 predicts a peak value for each time zone when the PV apparatus is not supplied, and determines whether the peak value exceeds the first threshold value for each predicted peak value. In the example of FIG. 3, the determination unit 134 determines whether or not a peak threshold value (15A in the example of FIG. 3) associated with the PV cooperation determination is exceeded. For example, when there is a peak value exceeding the first threshold, the determination unit 134 associates the peak value with the time zone and stores the peak value in the measurement result storage unit 122.

  In addition, the determination unit 134 predicts the peak value for each time period when the power storage device 50 is not supplied, and determines whether the peak value exceeds the second threshold value for each predicted peak value. It is determined whether or not the threshold of 3 is exceeded. In the example of FIG. 3, the determination unit 134 determines whether or not a peak threshold value (20A in the example of FIG. 3) associated with the intermediate determination is exceeded. In the example of FIG. 3, the determination unit 134 determines whether or not a peak threshold value (35A in the example of FIG. 3) associated with the abnormality determination is exceeded.

  For example, when there is a peak value that is higher than the second threshold value and lower than the third threshold value, the determination unit 134 associates the peak value with the time zone and stores them in the measurement result storage unit 122. For example, when there is a peak value higher than the third threshold, the determination unit 134 associates the peak value with the time zone and stores the peak value in the measurement result storage unit 122.

  On the other hand, it is assumed that the average value of the PV device at the time of supply is measured by the measurement unit 133 for each time zone of each date. In addition, it is assumed that the average value of the power storage device 50 at the time of supply is measured by the measurement unit 133 for each time zone of each date.

  In such a case, the determination unit 134 predicts an average value for each time zone when the PV apparatus is not supplied, and determines whether the average value exceeds the first threshold value for each predicted average value. In the example of FIG. 3, the determination unit 134 determines whether or not an average threshold value (13A in the example of FIG. 3) associated with the PV cooperation determination is exceeded. For example, when there is an average value exceeding the first threshold, the determination unit 134 associates the average value with the time zone and stores the average value in the measurement result storage unit 122.

  In addition, the determination unit 134 predicts an average value for each time period when the power storage device 50 is not supplied, and determines whether the average value exceeds the second threshold value for each predicted average value. It is determined whether or not the threshold of 3 is exceeded. In the example of FIG. 3, the determination unit 134 determines whether or not an average threshold value (18A in the example of FIG. 3) associated with the intermediate determination is exceeded. In the example of FIG. 3, the determination unit 134 determines whether or not the average threshold value (33A in the example of FIG. 3) associated with the abnormality determination is exceeded.

  For example, when there is an average value that is higher than the second threshold value and lower than the third threshold value, the determination unit 134 stores the average value and the time zone in association with each other in the measurement result storage unit 122. For example, when there is an average value higher than the third threshold, the determination unit 134 associates the average value with the time period and stores the average value in the measurement result storage unit 122.

  Here, a graph in which the determination result determined as described above is plotted will be described. FIG. 5 is a diagram showing a graph (1) on which the determination results are plotted. FIG. 6 is a diagram illustrating a graph (2) on which the determination results are plotted. FIG. 7 is a diagram showing a graph (3) on which the determination results are plotted. FIG. 8 is a diagram showing a graph (4) on which the determination results are plotted. Note that the plots shown in FIGS. 5 to 8 are peak threshold values. Therefore, the “PV cooperation determination threshold” illustrated in FIGS. 5 to 8 corresponds to the “peak threshold” associated with the PV cooperation determination described in FIG. Further, the “intermediate determination threshold value” illustrated in FIGS. 5 to 8 corresponds to the “peak threshold value” associated with the intermediate determination described with reference to FIG. 5 to 8 corresponds to the “peak threshold value” associated with the abnormality determination described in FIG.

  First, FIG. 5 will be described. Here, a plot associated with “February 1” in FIG. 5 will be described. The black circle plot shown in “February 1” of FIG. 5 indicates that it is determined that there is a peak value that exceeds the abnormality determination threshold (third threshold) at 7 o'clock.

  Next, the left x crossed plot shown in “February 1” of FIG. 5 is a peak that is higher than the intermediate determination threshold (second threshold) and lower than the abnormality determination threshold (third threshold) at 10:00. Indicates that the value is determined to exist.

  Next, the black triangle plot on the left side shown in “February 1” of FIG. 5 indicates that it is determined that there is a peak value that exceeds the PV cooperation determination threshold (first threshold) at around 12:00. . Further, the black triangle plot on the right side shown in “February 1” of FIG. 5 indicates that it is determined that there is a peak value exceeding the PV cooperation determination threshold (first threshold) at 15:00.

  Finally, the right-side x mark plot shown in “February 1” in FIG. 5 is a peak that is higher than the intermediate determination threshold (second threshold) and lower than the abnormality determination threshold (third threshold) at 20:00. Indicates that the value is determined to exist.

  Next, FIG. 6 will be described. Each x mark plot and each triangle plot in FIG. 6 correspond to those shown in FIG. On the other hand, there is no black circle plot in FIG. Therefore, the graph shown in FIG. 6 is compared to the graph shown in FIG. 6 when it is determined that there is no peak value exceeding the abnormality determination threshold (third threshold) in any time zone. It is a graph of.

  Next, FIG. 7 will be described. Each triangular plot in FIG. 7 corresponds to that shown in FIGS. On the other hand, in FIG. 7, there are no black circles and x mark plots. Therefore, compared with the graph shown in FIG. 5, the graph shown in FIG. 7 has a peak value exceeding the intermediate determination threshold (second threshold) and the abnormality determination threshold (third It is a graph when it is determined that there is no peak value exceeding (threshold).

  Next, FIG. 8 will be described. FIG. 8 does not have any plots. Therefore, the graph shown in FIG. 8 shows the PV cooperation determination threshold (first threshold), the intermediate determination threshold (second threshold), and the abnormality determination threshold (third threshold) in any time zone. It is a graph when it determines with the peak value exceeding exceeding not existing.

  The determination unit 134 may perform the above determination process at any timing. For example, the determination unit 134 may perform the determination process for each date, or may perform the determination process for each date included in the period every predetermined period (for example, one week). Also, the providing unit 135 described later may provide the information at any timing. For example, when the determination process is performed for each date, the providing unit 135 provides information based on the determination result on the date for each date. In addition, for example, when the determination process is performed for a date included in a predetermined period (for example, one week) every predetermined period (for example, one week), the providing unit 135 provides information based on the determination result in the period for each period. To do.

[About the providing unit 135]
The providing unit 135 provides information based on the current value supplied to the load LD supplied with power from the distributed power source when power is not supplied from the system to the user. For example, the providing unit 135 provides the user with information based on the current value supplied to the selected load LD, which is a load to which power is supplied during a self-sustained operation due to a power failure, among the loads LD. Specifically, the providing unit 135 is a current value predicted based on the current value measured by the measuring unit 133, and from the distributed power source to the load LD when power is not supplied from the system CP. Information based on the current value corresponding to the supplied power is provided to the user.

  Specifically, the providing unit 135 provides information based on a current value corresponding to the power supplied from the PV device to the load LD as a distributed power source. For example, when it is determined that the current value corresponding to the electric power exceeds the first threshold value that is a current value that can be supplied by the PV device, the providing unit 135 uses information on the overcurrent based on the first threshold value. Provided to For example, the providing unit 135 determines that the current value predicted based on the peak value of the current value measured by the measuring unit 133 has exceeded the first threshold value (peak threshold value associated with the PV cooperation determination). If so, information on overcurrent based on the first threshold is provided to the user. In another example, the providing unit 135 determines that the current value predicted based on the average value of the current values measured by the measuring unit 133 has exceeded the first threshold value (average threshold value associated with the PV cooperation determination). If so, information on overcurrent based on the first threshold is provided to the user.

  Further, providing unit 135 provides information based on a current value corresponding to the power supplied from power storage device 50 to load LD as a distributed power source. For example, when the providing unit 135 determines that the current value corresponding to the power exceeds the second threshold that is the current value at which the power storage device 50 supplies power for a certain period, the overcurrent based on the second threshold Provide information to users. For example, the providing unit 135 determines that the current value predicted based on the peak value of the current value measured by the measuring unit 133 has exceeded the second threshold value (peak threshold value associated with the intermediate determination). In this case, information on overcurrent based on the second threshold is provided to the user. In another example, the providing unit 135 determines that the current value predicted based on the average value of the current values measured by the measuring unit 133 has exceeded the second threshold value (average threshold value associated with the intermediate determination). In this case, information on overcurrent based on the second threshold is provided to the user.

  In addition, when the providing unit 135 determines that the current value corresponding to the power is higher than the second threshold and exceeds the third threshold that is a current value at which the power storage device 50 stops supplying power, the providing unit 135 Information on overcurrent based on the threshold value is provided to the user. For example, the providing unit 135 determines that the current value predicted based on the peak value of the current value measured by the measuring unit 133 exceeds the third threshold value (peak threshold value associated with the abnormality determination). In this case, information on overcurrent based on the third threshold is provided to the user. In another example, the providing unit 135 determines that the providing unit 135 has a current value predicted based on the average value of the current values measured by the measuring unit 133 as a third threshold value (an average threshold value associated with the abnormality determination). When it is determined that the value exceeds the threshold value, information on overcurrent based on the third threshold is provided to the user.

  For example, the providing unit 135 performs display control on the output unit 210 of the controller 200 so as to display information on overcurrent. The output unit 210 monitors and displays information on overcurrent in accordance with display control by the providing unit 135.

  Here, an example of information provision by the provision unit 135 will be described using the example of FIG. In the example of FIG. 5, a peak value exceeding the abnormality determination threshold (third threshold) exists at the 7 o'clock range of “February 1”. In addition, at “10:00” and “20:00” on “February 1”, there are peak values higher than the intermediate determination threshold (second threshold) and lower than the abnormality determination threshold (third threshold). In addition, peak values exceeding the PV cooperation determination threshold value (first threshold value) exist at 12:00 and 15:00 on “February 1”.

  For this reason, the providing unit 135 warns that “at 7 o'clock on February 1, household appliances were used at one time so that electricity could not be used at the time of a power failure. To users. In addition, the providing unit 135 stated, “At 10:00 and 20:00 on February 1, household appliances were used to the extent that electricity could not be used in the event of a power failure. Is provided to the user. In addition, the providing unit 135 stated, “At 12 o'clock and 15 o'clock on February 1st, home appliances were used so that the electricity of solar power generation could not be used at the time of a power failure. Is provided to the user.

  Note that such warning text is merely an example, and the manner in which the providing unit 135 provides information on overcurrent is not limited. For example, the providing unit 135 may provide the user with the graph shown in FIG. For example, the providing unit 135 may provide the user with explanatory information for explaining each plot together with the graph shown in FIG. The providing unit 135 may provide information for each date, or may provide information for each predetermined period (for example, one week).

[Processing procedure]
Next, the procedure of a control process executed by the providing apparatus (power conditioner 100) according to the embodiment will be described with reference to FIG. FIG. 9 is a flowchart illustrating a control processing procedure by the power conditioner 100 according to the embodiment.

  First, the system detection unit 131 determines whether power is supplied from the system CP (step S101). When it is determined that the power is not supplied from the system CP (step S101; No), the system detection unit 131 waits until the power supply from the system CP is resumed.

  On the other hand, when it is determined by the system detection unit 131 that power is supplied from the system CP (step S101; Yes), the measurement unit 133 determines whether it is time to measure the current value (step S101). S102). Here, it is assumed that the measurement unit 133 measures the current value at 1-minute intervals for each time zone. In such a case, the measurement unit 133 determines that it is not time to measure the current value when one minute has not elapsed since the previous current value was measured (step S102; No), and the timing to measure the current value. Wait until

  On the other hand, the measurement unit 133 determines that it is time to measure the current value when one minute has elapsed since the previous measurement of the current value (step S102; Yes), and determines the power supplied to the load LD. The corresponding current value is measured (step S103). For example, the measurement unit 133 measures a current value corresponding to the power supplied from the PV device to the load LD. Measurement unit 133 measures a current value corresponding to the electric power supplied from power storage device 50 to load LD.

  Although not shown, the measurement unit 133 acquires the highest current value among the current values measured in one time zone as a peak value in that time zone. That is, the measuring unit 133 measures the peak value of the current value corresponding to the power supplied from the PV device to the load LD. Measurement unit 133 measures the peak value of the current value corresponding to the power supplied from power storage device 50 to load LD.

  Next, the determination unit 134, based on the current value measured by the measurement unit 133, the current value corresponding to the power supplied from the distributed power source to the load LD when power is not supplied from the system CP. Is predicted (step S104). For example, based on the peak value of the current value measured by the measurement unit 133, the determination unit 134 determines a current value corresponding to the power supplied from the PV device to the load LD when not supplied (current value of the self-sustaining operation current). ) To predict the peak value. Further, the determination unit 134 determines a current value corresponding to the power supplied from the power storage device 50 to the load LD when not supplied based on the peak value of the current value measured by the measurement unit 133 (the current of the self-sustaining discharge current). Value) peak value.

  Next, the determination unit 134 determines whether or not the current value predicted in step S104 exceeds a threshold value (step S105). For example, the determination unit 134 determines whether the predicted peak value of the PV device exceeds the first threshold value. In the example of FIG. 3, the determination unit 134 determines whether or not a peak threshold value (15A in the example of FIG. 3) associated with the PV cooperation determination is exceeded. For example, if the determination unit 134 exceeds the first threshold (step S105; Yes), the peak value and the time zone are associated with each other and stored in the measurement result storage unit 122.

  Further, the determination unit 134 determines whether or not the predicted peak value of the power storage device 50 exceeds the second threshold and whether or not it exceeds the third threshold. In the example of FIG. 3, the determination unit 134 determines whether or not a peak threshold value (20A in the example of FIG. 3) associated with the intermediate determination is exceeded. In the example of FIG. 3, the determination unit 134 determines whether or not a peak threshold value (35A in the example of FIG. 3) associated with the abnormality determination is exceeded. For example, when the determination unit 134 is higher than the second threshold value and lower than the third threshold value (step S105; Yes), the determination unit 134 associates the peak value with the time zone and stores them in the measurement result storage unit 122. For example, when the determination unit 134 is higher than the third threshold (step S105; Yes), the average value and the time zone are associated with each other and stored in the measurement result storage unit 122.

  Finally, the providing unit 135 provides warning information based on the current value corresponding to the power supplied from the distributed power source to the load LD at the time of non-supply based on the determination result by the determining unit 134 to the user. (Step S106).

[Modification 1]
The power conditioner 100 according to the above embodiment may be implemented in various different forms other than the above embodiment. Therefore, in the following, another embodiment of the power conditioner 100 will be described.

  In the above embodiment, the determination unit 134 determines whether one of the peak value of the current value exceeds the peak threshold value or the average value of the current value exceeds the average threshold value. Indicated. However, without being limited to this example, the determination unit 134 may determine using both the peak threshold value and the average threshold value. For example, the determination unit 134 may determine whether or not the peak value exceeds the average threshold and the average value exceeds the average threshold.

  More specifically, the determination unit 134 determines that the peak value of the current value corresponding to the power supplied from the PV device to the load LD at the time of non-supply is a peak threshold value for PV cooperation determination (an example of a first threshold value). Or whether the average value of the current value corresponding to the power supplied from the PV device to the load LD at the time of non-supply exceeds the average threshold value (an example of the first threshold value) for PV cooperation determination judge. The providing unit 135 issues a warning when it is determined that both the peak threshold value and the average threshold value are exceeded.

  In addition, determination unit 134 determines whether the peak value of the current value corresponding to the power supplied from power storage device 50 to load LD when not supplied exceeds the peak threshold value for intermediate determination (an example of a second threshold value). In addition, it is determined whether the average value of the current values corresponding to the power supplied from the power storage device 50 to the load LD at the time of non-supply exceeds the average threshold value of the intermediate determination (an example of a second threshold value). The providing unit 135 issues a warning when it is determined that both the peak threshold value and the average threshold value are exceeded.

  Further, determination unit 134 determines whether the peak value of the current value corresponding to the power supplied from power storage device 50 to load LD when not supplied exceeds the peak threshold value for determining abnormality (an example of a third threshold value). In addition, it is determined whether the average value of the current values corresponding to the power supplied from the power storage device 50 to the load LD at the time of non-supply exceeds the abnormality determination average threshold (an example of a third threshold). The providing unit 135 issues a warning when it is determined that both the peak threshold value and the average threshold value are exceeded.

  For example, the providing unit 135 may provide warning information when it is determined that the average value exceeds the second threshold and the peak value exceeds the third threshold. That is, the providing unit 135 can also provide warning information based on a determination result determined by arbitrarily combining both the second threshold value and the third threshold value.

[Modification 2]
In the above-described embodiment, the example in which the providing unit 135 provides information based on the current value corresponding to the power supplied from the PV device to the load LD as the distributed power supply has been described. Further, the example in which the providing unit 135 provides information based on the current value corresponding to the power supplied from the power storage device 50 to the load LD as the distributed power source is shown.

  However, the distributed power source is not limited to a PV device or a power storage device, but can be any power that can supply power to the load LD when power is not supplied from the system CP, such as an EV (electric vehicle) or a fuel cell. It can be a power supply. Therefore, the providing unit 135 may provide warning information about an arbitrary power supply by setting a threshold value according to whether or not the power can be normally supplied when the arbitrary power supply is not supplied. Further, the providing unit 135 may provide different warning information for each distributed power source by adopting different threshold values for each distributed power source.

[Modification 3]
In the said embodiment, the power conditioner 100 demonstrated as what has a function of the provision apparatus concerning embodiment. However, devices other than the inverter 100 may have the function of the providing device according to the embodiment. For example, the controller 200 or the cloud server CS may have the function of the providing device according to the embodiment. That is, the controller 200 or the cloud server CS may perform the control process (providing process) described as being executed by the power conditioner 100 in the above embodiment.

[Modification 4]
In the above-described embodiment, the example in which the providing unit 135 provides the warning information by performing display control so as to display the warning information to the output unit 210 of the controller 200 has been described. However, the providing unit 135 may perform display control so that warning information is displayed on any information processing apparatus other than the output unit 210.

  For example, the providing unit 135 is a terminal device used by a user, specifically, a smartphone, a tablet terminal, a notebook PC (Personal Computer), a desktop PC, a mobile phone, a PDA (Personal Digital). For example, display control may be performed so that warning information is displayed. Taking a smartphone as an example, the smartphone pushes warning information according to a control process by the providing unit 135.

  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 modifications thereof are included in the scope of the present invention and the gist thereof, and are also included in the invention described in the scope of claims and the equivalents thereof.

1 power storage system 50 power storage device 100 power conditioner 110 communication unit 120 storage unit 121 threshold information storage unit 122 measurement result storage unit 130 control unit 131 system detection unit 132 power generation detection unit 133 measurement unit 134 determination unit 135 provision unit 200 controller 210 output Section 220 Input section BX Junction box CP Commercial power supply CS Cloud server DP Distribution board LD Electrical equipment (load)
MT Power meter PN Solar panel

Claims (14)

When the power is supplied from the system, information is provided to the user based on the current value supplied to the load supplied with power from the distributed power source when the power is not supplied from the system. A providing device comprising a providing unit. The providing device according to claim 1, wherein the providing unit provides information based on a current value supplied to the load from a power generation device that generates power based on natural energy as the distributed power source. The providing unit, when it is determined that the current value supplied to the load exceeds a first threshold value that is a current value that can be supplied by the power generation device, information relating to an overcurrent based on the first threshold value The providing device according to claim 2, wherein the providing device is provided to the user. The providing unit, when it is determined that a current value predicted based on a peak value of a current value supplied to the load exceeds the first threshold, information on an overcurrent based on the first threshold The providing device according to claim 3, wherein the providing device is provided to the user. The providing unit, when it is determined that the current value predicted based on the average value of the current values supplied to the load exceeds the first threshold, information on the overcurrent based on the first threshold The providing device according to claim 3, wherein the providing device is provided to the user. The providing device according to claim 1, wherein the providing unit provides information based on a current value supplied from a chargeable / dischargeable power storage device to the load as the distributed power source. When the current value supplied to the load exceeds a second threshold value that is a current value at which the power storage device supplies power for a certain period of time, the providing unit detects an excess based on the second threshold value. The providing apparatus according to claim 6, wherein information relating to current is provided to the user. The providing unit, when it is determined that a current value predicted based on a peak value of a current value supplied to the load exceeds the second threshold, information on an overcurrent based on the second threshold The providing device according to claim 7, wherein the providing device is provided to the user. The providing unit, when it is determined that the current value predicted based on the average value of the current values supplied to the load exceeds the second threshold, information on the overcurrent based on the second threshold The providing device according to claim 7, wherein the providing device is provided to the user. The providing unit, when it is determined that the current value supplied to the load is higher than the second threshold value and exceeds a third threshold value, which is a current value at which the power storage device stops supplying power. The providing apparatus according to claim 7, wherein information relating to an overcurrent based on the third threshold is provided to the user. The providing unit, when it is determined that the current value predicted based on the peak value of the current value supplied to the load exceeds the third threshold, information on the overcurrent based on the third threshold The providing device according to claim 10, wherein the providing device is provided to the user. The providing unit, when it is determined that the current value predicted based on the average value of the current values supplied to the load exceeds the third threshold value, information on the overcurrent based on the third threshold value The providing device according to claim 10, wherein the providing device is provided to the user. A providing method executed by a providing device,
When the power is supplied from the grid, the information based on the current value supplied to the load to which the power is supplied from the distributed power supply is provided to the user when the power is not supplied from the grid. A providing method comprising a providing step. When the computer is supplied with power from the grid, the information based on the current value supplied to the load supplied with power from the distributed power source is supplied to the user when power is not supplied from the grid. A providing program characterized by causing a providing procedure to be provided to be executed.

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