Method for monitoring power source device, program for monitoring power source device, information processing apparatus and system for monitoring power source device

Abstract

To provide a method for monitoring a power source device, the method supporting addressing of abnormality caused by operation mistake and setting mistake of the power source device.SOLUTION: A method for monitoring a power source device 30 comprising a power reception terminal 311, an output terminal 315, a storage battery 33, and a power converter 32 includes a computer executing processing of: acquiring an operation state of the storage battery 33 from the power source device 30; acquiring input voltage, converter output voltage, and converter output current; when the storage battery 33 discharges, the input voltage is normal, and the converter output voltage is not normal, outputting information showing possibility of a converter input breaker being in an off-state; and, when the storage battery 33 discharges, the input voltage and the converter output voltage are normal, and the converter output current is not normal, outputting information showing possibility of a converter output breaker 352, which is disposed between the power converter 32 and the output terminal 315, being in an off-state.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a method for monitoring a power supply device, a monitoring program for a power supply device, an information processing device, and a power supply device monitoring system.

Background Art

[0002] A maintenance operation system has been proposed in which maintenance personnel who maintain a power supply device can check the management information of the power supply device using a portable information terminal (Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the maintenance operation system of Patent Document 1, it is not possible to assist in dealing with abnormalities caused by operation errors or setting errors that occur during maintenance work or the like of the power supply device.

[0005] One aspect of the present invention provides a method for monitoring a power supply device that can assist in dealing with abnormalities caused by operation errors or setting errors of the power supply device.

Means for Solving the Problems

[0006] A method for monitoring a power supply device includes: a power receiving terminal; an output terminal; a storage battery that supplies power to the output terminal when normal power is not supplied to the power receiving terminal; and a power converter that converts the power supplied through the power receiving terminal and supplies it to the output terminal. The method obtains the operating state of the storage battery from the power supply device, obtains the input voltage input to the power receiving terminal, the converter output voltage and the converter output current output from the power converter, and when the storage battery is discharging, the input voltage is normal, and the converter output voltage is not normal, outputs input breaker off information indicating that the converter input breaker disposed between the power receiving terminal and the power converter may be in an off state, and when the storage battery is discharging, the input voltage and the converter output voltage are normal, and the converter output current is not normal, the computer executes a process of outputting output breaker off information indicating that the converter output breaker disposed between the power converter and the output terminal may be in an off state. Here, the acquisition of the operating state of the storage battery, the input voltage, the converter output voltage, and the converter output current may be performed by communication via a network, or may be performed on-site (the site where the power supply device is installed).

Advantages of the Invention

[0007] According to the above configuration, it is possible to assist in dealing with abnormalities caused by operation errors or setting errors of the power supply device. For example, it is possible to prompt early detection of the fact that the storage battery is discharging unintentionally due to a maintenance work error.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

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Figure 13

Mode for Carrying Out the Invention

[0009] Hereinafter, embodiments of the present invention will be described, but the present invention is not limited to these embodiments. [Embodiment 1] FIG. 1 is a diagram for explaining the configuration of the power supply device monitoring system 10. The power supply device monitoring system 10 remotely monitors the power supply device 30 installed in the business office 83. The power supply device monitoring system 10 includes an information processing device 20.

[0010] The power supply device 30 supplies the power received by the power receiving facility 85 installed in the business office 83 from the power grid (for example, the power received from the power plant 89 via the power transmission network) to various loads 86. The load 86 is, for example, equipment that consumes power, such as production equipment, an information processing system, air conditioning equipment, lighting equipment, disaster prevention equipment, etc. Among the loads 86, some need to follow a predetermined procedure to stop operating, and abnormal conditions such as damage may occur when the power supply suddenly stops due to a power outage. Among the loads 86, disaster prevention equipment such as evacuation guidance lights needs to operate reliably for a predetermined time after the occurrence of a power outage to ensure safety.

[0011] When a failure occurs in the power transmission path or the like from the power plant 89 to the power receiving facility 85, resulting in a power outage, or when a failure occurs in the power receiving facility 85 and normal power reception becomes impossible, the power supply device 30 supplies backup power to the load 86 to prevent the load 86 from stopping due to the power outage. Although not described in detail, the power supply device 30 may supply power for purposes other than backup power supply, such as energy management, during non-power outage (normal) times. The configuration of the power supply device 30 will be described later. The power supply device 30 may be a DC power supply device or an uninterruptible power supply (UPS).

[0012] At the business office 83, maintenance staff in the central monitoring room 84 perform maintenance management of various facilities such as the power receiving facility 85, the power supply device 30, and the wiring facilities. The statutory inspections and repairs of the power supply device 30 may be entrusted to a maintenance company or the like that undertakes these tasks. In the following description, the maintenance management, statutory inspections, repairs, etc. of the facilities are collectively referred to as maintenance work.

[0013] If there is a mistake in the work of the contractor for the maintenance work of the power supply device 30 and an abnormality occurs in the power supply device 30, it is desirable that the maintenance staff in the central monitoring room 84 can respond promptly. The power supply device monitoring system 10 of the present embodiment supports the maintenance staff so that they can quickly locate the place where the abnormality occurred and take countermeasures.

[0014] The information processing device 20 is used by a remote monitoring center (service center) 82 that remotely monitors the power supply devices 30 installed in a plurality of business offices 83 respectively. The information processing device 20 includes a control unit 21, a main memory device 22, an auxiliary storage device 23, a communication unit 24, a display unit 25, an input unit 26, and a bus. The control unit 21 is an arithmetic control device that executes the program of the present embodiment. One or more CPUs (Central Processing Unit), GPUs (Graphics Processing Unit), or multi-core CPUs, etc. are used for the control unit 21. The control unit 21 is connected to each hardware part constituting the information processing device 20 via a bus.

[0015] The main memory device 22 is a memory device such as SRAM (Static Random Access Memory), DRAM (Dynamic Random Access Memory), or flash memory. In the main memory device 22, information necessary during the processing performed by the control unit 21 and the program being executed by the control unit 21 are temporarily stored.

[0016] The auxiliary storage device 23 is a storage device such as SRAM, flash memory, hard disk, or magnetic tape. In the auxiliary storage device 23, the program to be executed by the control unit 21 and various data necessary for the execution of the program are stored. The communication unit 24 is an interface for performing communication between the information processing device 20 and the network N.

[0017] The display unit 25 is, for example, a liquid crystal display panel or an organic EL (electro-luminescence) panel, etc. The input unit 26 is, for example, a keyboard, mouse, or tablet, etc. The display unit 25 and the input unit 26 may be stacked to form a touch panel.

[0018] The information processing device 20 is a general-purpose personal computer, tablet, mainframe computer, virtual machine operating on a mainframe computer, or a quantum computer. The information processing device 20 may be composed of a plurality of personal computers performing distributed processing, or hardware such as a mainframe computer. The information processing device 20 may be composed of a cloud computing system. The information processing device 20 may be composed of a plurality of personal computers operating in cooperation, or hardware such as a mainframe computer.

[0019] FIG. 2 is a diagram for explaining the state of the power supply device 30 in normal times. The power supply device 30 of the present embodiment is a DC power supply device that supplies DC power to the load 86. The configuration of the power supply device 30 will be described using FIG. 2.

[0020] The power supply device 30 includes a power converter 32, a storage battery 33, a sensor 34, a breaker 35, a power receiving terminal 311, an output terminal 315, and a communication device 39. The sensor 34 includes an input sensor 341, a converter output sensor 342, and a storage battery output sensor 343. The breaker 35 includes a converter input breaker 351, a converter output breaker 352, and a load input breaker 353. For the sake of illustration of the state of the breaker 35, the breaker 35 is shown by the graphical symbol of a single-pole single-throw switch.

[0021] The power receiving terminal 311 is connected to the power grid via a power receiving facility 85 (see FIG. 1). The output terminal 315 is connected to a load 86. Between the power receiving terminal 311 and the output terminal 315, a converter input breaker 351, a power converter 32, a converter output breaker 352, and a load input breaker 353 are arranged in order from the power receiving terminal 311 side. A storage battery connection point 36 to which the storage battery 33 is connected is arranged between the converter output breaker 352 and the load input breaker 353.

[0022] When AC power is supplied from the power grid, an AC-DC converter (rectifier) that converts AC power into DC power is used for the power converter 32. When DC power is supplied from the power grid, a DC-DC converter that steps down the DC high voltage to a voltage suitable for charging the storage battery 33 is used for the power converter 32. When the power supply device 30 is an uninterruptible power supply device that supplies AC power to the load, an inverter (DC-AC converter) is arranged between the storage battery connection point 36 and the output terminal 315.

[0023] Conventionally, the power supply device 30 has a function of reporting a signal (contact signal) indicating a decrease in the storage battery voltage when the remaining capacity of the storage battery 33 decreases and the output voltage drops. The signal indicating a decrease in the storage battery voltage propagates, for example, through a cable connecting the storage battery 33 and an alarm lamp arranged in the central monitoring room 84, and lights up the alarm lamp. In the present embodiment, in addition to or instead of the function of transmitting a signal indicating a decrease in the battery voltage, the power supply device 30 may have a function of transmitting a signal indicating a decrease in the battery voltage to the information processing device 20 via the communication device 39 and the network N.

[0024] The present embodiment includes an input sensor 341, a converter output sensor 342, and a communication device 39 to assist in dealing with maintenance work errors of the power supply device 30. The input sensor 341 measures the current A1 and voltage V1 between the power receiving terminal 311 and the converter input breaker 351. The input sensor 341 may measure only the voltage V1 and not measure the current A1. The current A1 and voltage V1 are respectively equal to the input current and input voltage input from the power receiving facility 85 to the power receiving terminal 311.

[0025] The converter output sensor 342 measures the current A2 and voltage V2 between the power converter 32 and the converter output breaker 352. The current A2 and voltage V2 are respectively equal to the converter output current and converter output voltage output from the power converter 32.

[0026] The battery output sensor 343 measures the current A3 and voltage V3 between the battery 33 and the battery connection point 36. The current A3 and voltage V3 are respectively equal to the input / output current and input / output voltage of the battery 33. Details of the wiring of each sensor 34 are omitted from the illustration. It is desirable that each sensor 34 also has a function of a frequency meter in addition to the functions of an ammeter and a voltmeter.

[0027] The communication device 39 is, for example, a network interface card. The communication device 39 is an interface for performing communication between the power supply device 30 and the network N (see FIG. 1).

[0028] When current A3 flows from battery 33 towards battery connection point 36, the operating state of battery 33 is discharging. When current A3 flows from battery connection point 36 towards battery 33, the operating state of battery 33 is charging. Therefore, the control unit 21 of the information processing apparatus 20 can acquire the operating state of battery 33 by obtaining data from the battery output sensor 343.

[0029] The data measured by each sensor 34 is transmitted to the information processing apparatus 20 via the communication device 39 and the network N. The sensor 34 and the communication device 39 are connected by wired or short-range wireless communication. For the communication protocol between the communication device 39 and the information processing apparatus 20, for example, TCP / IP (Transmission Control Protocol / Internet Protocol) can be used.

[0030] The sensor 34 may be a so-called IoT device having a communication function, and each may directly transmit data to the information processing apparatus 20 via the network N. For the communication protocol between the sensor 34 and the information processing apparatus 20, for example, TCP / IP can be used.

[0031] The state of the breaker 35 has three states: on state, off state, and trip state. The on state is a state in which current passes through. The off state is a state in which current is cut off. The breaker 35 is provided with a switch used when the user switches between the on state and the off state. The trip state is a state that automatically switches to cut off the current when an excessive current flows through the on-state breaker 35. In the following description, the case where the breaker 35 automatically switches to the trip state may be described as tripping.

[0032] After tripping, the switch of breaker 35 is in a state intermediate between the on state and the off state. The tripped breaker 35 maintains the tripped state until the user manually switches it to the on state or the off state. The user cannot switch the breaker 35 to the tripped state through normal operation. However, the user can artificially switch the breaker 35 to the tripped state by operating the trip button used for testing the breaker 35.

[0033] Conventionally, breaker 35 has a function of transmitting a contact signal when tripped. The contact signal propagates through a cable connecting each breaker 35 and an alarm lamp arranged in the central monitoring room 84, for example, to turn on the alarm lamp. In this embodiment, the power supply device 30 may have a function of transmitting a signal indicating that the breaker 35 has tripped to the information processing device 20 via the communication device 39 and the network N.

[0034] The contacts provided in breaker 35 will be described. Breaker 35 includes an alarm contact and an auxiliary contact. The alarm contact is used to detect the tripped state. The auxiliary contact is used to detect the on state and the off state of breaker 35. Each contact has two terminals, and the connection between the terminals switches between the on state and the off state according to the state of breaker 35. Table 1 shows the relationship between the state of breaker 35 and the state of each contact. The aforementioned contact signal is a signal indicating that the alarm contact is in the on state in Table 1.

[0035]

Table 1

[0036] Although illustration is omitted, the power supply device 30 includes a plurality of output terminals 315, and different loads 86 may be connected to each of the output terminals 315. Each output terminal 315 may be connected to the battery connection point 36 via a different load input breaker 353. Thereby, maintenance personnel can cut off only some of the loads 86 from the power converter 32 and the battery 33.

[0037] In FIG. 2, the converter input breaker 351, the converter output breaker 352, and the load input breaker 353 are all in the on state. AC power is applied from the power receiving facility 85 to the power receiving terminal 311. The AC power is converted into DC power by the power converter 32. DC power is applied to the load 86 via the output terminal 315. As a result, as shown by the thick arrow in FIG. 2, a current flows from the power receiving terminal 311 toward the output terminal 315.

[0038] When the battery 33 is not in a fully charged state, a charging current flows through the battery connection point 36 to the battery 33. When the battery 33 is in a fully charged state, float charging is performed on the battery 33.

[0039] FIG. 3 is a diagram for explaining the state of the power supply device 30 during a power outage. For example, when a trouble occurs in the power distribution facility between the power generation plant 89 and the power receiving facility 85, or when a trouble occurs in the power receiving facility 85, a power outage occurs and AC power is not supplied to the power receiving terminal 311. During a power outage, power is automatically supplied from the battery 33 to the output terminal 315 via the battery connection point 36. When the power outage is resolved, the power supply path automatically returns to the state of FIG. 2, and the battery 33 is also charged.

[0040] Maintenance personnel and the managers in charge of each load 86 perform operations such as safely stopping the load 86 or switching to a power-saving mode with low power consumption according to a predetermined operation procedure when the power outage is likely to continue. The capacity of the battery 33 is selected so that these operations can be performed with sufficient margin.

[0041] FIG. 4 is a diagram for explaining the state of the power supply device 30 during maintenance work. When performing maintenance work on the power supply device 30, in principle, all the circuit breakers 35 are manually switched to the off state. The maintenance work is, for example, the replacement work of the power converter 32 which is the core unit of the power supply device monitoring system 10.

[0042] After the completion of various operations, in principle, the maintenance personnel who were originally in charge of the work manually turn all the circuit breakers 35 back to the on state. The power supply device 30 returns to the state shown in FIG. 2. The maintenance personnel confirm that the power supply device 30 has returned to the state shown in FIG. 2 and then finish the work.

[0043] FIGS. 5 to 7 are diagrams for explaining the state of the power supply device 30 in case of work mistakes. The maintenance work of the power supply device 30 is carried out by engineers with sufficient training. However, it is difficult to completely prevent work mistakes due to human errors.

[0044] FIG. 5 shows a situation where the converter input circuit breaker 351 and the converter output circuit breaker 352 are forgotten to be turned back to the on state at the end of the maintenance work. FIG. 6 shows a situation where the converter output circuit breaker 352 is forgotten to be turned back to the on state at the end of the maintenance work. FIG. 7 shows a situation where the converter input circuit breaker 351 is forgotten to be turned back to the on state at the end of the maintenance work.

[0045] In FIGS. 5 to 7, as shown by the thick arrows, power is supplied from the storage battery 33 to the output terminal 315. This is the same behavior as when a power failure occurs and power is no longer supplied to the power receiving terminal 311. Power is supplied to the load 86 and the load 86 operates normally, so it is difficult to notice that a work mistake has occurred.

[0046] Since the capacity of the storage battery 33 is limited, if the states shown in FIGS. 5 to 7 continue, the remaining capacity decreases, and as described above, a signal indicating a decrease in the storage battery voltage is reported. If the maintenance personnel who confirm the signal indicating a decrease in the storage battery voltage quickly notice the work mistake and turn the circuit breaker 35 to the on state, the operation of the load 86 can be continued.

[0047] When the breaker 35 is turned on, charging of the storage battery 33 also starts. However, it takes time for the storage battery 33 to return to a fully charged state. When a power outage occurs due to, for example, an accident or a disaster while the remaining capacity of the storage battery 33 is low, it may not be possible to safely stop the load 86 and operate the disaster prevention equipment for a predetermined time.

[0048] When the input sensor 341 detects that power is being supplied from the power receiving facility 85 and the storage battery output sensor 343 detects that the storage battery 33 is discharging, the power supply device monitoring system 10 of the present embodiment notifies a portable device or terminal device such as a smartphone or a tablet possessed by a person concerned such as a maintenance staff that the breaker 35 is in an off state. In the following description, the case where the portable device possessed by the person concerned is a smartphone will be taken as an example.

[0049] The maintenance staff who has confirmed the notification received by the smartphone can notice a work mistake and return the state of the breaker 35 to normal before a signal indicating a decrease in the storage battery voltage is reported from the storage battery 33. Therefore, it is possible to prevent a situation where the power storage amount of the storage battery 33 is insufficient when an actual power outage occurs. Furthermore, it is possible to prevent deterioration of the storage battery 33 due to unnecessary discharge and charging of the storage battery 33.

[0050] FIG. 8 is a diagram for explaining the state of the power supply device 30 in the case of an overload. When the power consumption of the load 86 increases and the amount of power supplied by the power converter 32 is insufficient, power is also supplied from the storage battery 33. A short-term overload, such as an overload caused by the starting power when starting the load 86, is not particularly a problem. However, when the overload continues for a long time, it is highly likely that there is a problem with the load 86 or the specifications of the power converter 32 have not been appropriately selected.

[0051] Even if the state shown in FIG. 8 continues for a long time, the remaining capacity of the storage battery 33 decreases, and a signal indicating a decrease in the storage battery voltage is reported. Due to the decrease in the remaining capacity of the storage battery 33, in addition to the same problems as in the case of the above-mentioned operation error, problems such as an expansion of the failure range due to a delay in noticing a defect in the load 86 may occur.

[0052] When the converter output sensor 342 detects that power is being supplied from the power converter 32 and the battery output sensor 343 detects that power is being supplied from the storage battery 33, the power supply device monitoring system 10 of the present embodiment notifies a person concerned such as a maintenance staff member who has a smartphone that the power supply device 30 is in an overload state.

[0053] The maintenance staff member checks the state of the load 86 and takes appropriate measures. For example, when it is necessary to cut off the power supplied to the load 86, the maintenance staff member turns off the load input breaker 353. As described above, it is possible to provide the power supply device monitoring system 10 that notifies the possibility of a defect in the load 86 at an early stage and prompts appropriate measures.

[0054] FIG. 9 is a flowchart for explaining the flow of program processing. The flowchart of FIG. 9 is a flowchart related to a monitoring program of the power supply device 30 that is activated by the control unit 21 when it is detected by the battery output sensor 343 that the storage battery 33 is discharging. The control unit 21 may activate the program shown in FIG. 9 when the discharge time from the storage battery 33 exceeds a predetermined threshold value such as several minutes.

[0055] The control unit 21 determines whether the voltage V1 detected by the input sensor 341 is within the normal range (step S501). If the voltage V1 is not within the normal range (NO in step S501), the control unit 21 notifies the smartphone possessed by the relevant person that a power outage has occurred (step S502). Here, the case where it is not within the normal range means that the voltage V1 is smaller than a predetermined voltage output from the power receiving facility 85, the frequency of the voltage V1 is different from the predetermined frequency, or the voltage V1 is unstable. Thereafter, the control unit 21 ends the process.

[0056] Which relevant person's smartphone to notify that a power outage has occurred is determined in advance and stored in the main memory device 22 or the auxiliary storage device 23. It may be set for each smartphone or the like to promptly notify the user that the notification has been received, for example, by a vibration function or a notification sound function. The control unit 21 may send a notification to the smartphones possessed by all relevant persons in step S502. The same applies to various notifications sent by the control unit 21 in subsequent programs.

[0057] If it is determined that the voltage V1 is within the normal range (YES in step S501), the control unit 21 determines whether the power supply device 30 is under maintenance work, for example, by referring to the schedule of maintenance work for the power supply device 30 (step S503). The control unit 21 may send a message such as SMS (Short Message Service) to the maintenance personnel in charge of the power supply device 30 and request an answer as to whether it is under maintenance work.

[0058] If it is determined that the power supply device 30 is under maintenance work (YES in step S503), the control unit 21 notifies the smartphone possessed by the relevant person that the power supply device 30 is under maintenance work (step S504). The control unit 21 waits for a predetermined period such as the time required for standard maintenance work to elapse by means of a timer (step S505). In the following description, the time required for standard maintenance work is referred to as the standard maintenance work time.

[0059] Based on the latest data received from the battery output sensor 343, the control unit 21 determines whether the discharge of the battery 33 has stopped (step S506). If it is determined that the discharge has stopped (YES in step S506), the control unit 21 ends the process. If it is determined that the discharge has not stopped (NO in step S506), the control unit 21 returns to step S501.

[0060] Since the standard maintenance work time has elapsed in step S505, in step S503 in the second week and later, the control unit 21 determines that the power supply device 30 is not under maintenance work (NO in step S503).

[0061] When it is determined that the power supply device 30 is not under maintenance work (NO in step S503), the control unit 21 determines whether the voltage V2 detected by the converter output sensor 342 is within the normal range (step S511). When it is determined that the voltage is within the normal range (YES in step S511), the control unit 21 determines whether the current A2 detected by the converter output sensor 342 is within the normal range (step S512).

[0062] When it is determined that the current A2 is within the normal range (YES in step S512), the control unit 21 notifies the smartphone held by the relevant person of overload information indicating that the power supply device 30 is in an overload state (step S513). Then, the control unit 21 ends the process.

[0063] When it is determined that the current A2 is not within the normal range (NO in step S512), the control unit 21 notifies the smartphone held by the relevant person (step S514). The notification in step S514 may include output breaker off information indicating that the converter output breaker 352 is likely to be in the off state. Here, the case where it is not within the normal range means that the current A2 is smaller than a predetermined current output from the power converter 32, specifically, when the output current from the power converter 32 is not flowing.

[0064] The control unit 21 waits for the elapse of a predetermined period such as the standard time required for the operation of returning the converter output breaker 352 to the on state by the timer (step S515). The control unit 21 determines whether or not the discharge of the storage battery 33 has stopped based on the latest data received from the storage battery output sensor 343 (step S516). If it is determined that the discharge has stopped (YES in step S516), the control unit 21 ends the process. If it is determined that the discharge has not stopped (NO in step S516), the control unit 21 returns to step S514.

[0065] A specific example of the notification transmitted by the control unit 21 to the smartphone in step S514 will be described. The notification is performed by any means such as, for example, SMS, email, or a pop-up notification on the screen of the smartphone. When the smartphone receives the notification, it is desirable that the smartphone is set to alert the user by vibration or a notification sound or the like.

[0066] In the first step S514, the control unit 21 outputs a notification such as "The AC input is normal, but the storage battery is discharging. Are you performing inspections or the like?" In the second step S514, the control unit 21 outputs a notification such as "The AC input is normal, but the discharge from the storage battery continues. Did you forget to turn on the breaker?" or "The AC input is normal, but the discharge from the storage battery continues. We recommend checking the on state of the converter output breaker."

[0067] In the third and subsequent steps S515, the control unit 21 outputs a notification such as "The AC input is normal, but the discharge from the storage battery continues. If the discharge continues like this, an alarm for a decrease in the storage battery voltage will be issued." The control unit 21 may calculate the predicted time until a signal indicating a decrease in the storage battery voltage is issued from the storage battery 33 based on the storage capacity of the storage battery 33, the current A3 detected by the storage battery output sensor 343, and the voltage V3, and add it to the notification.

[0068] When it is determined that the voltage V2 is not within the normal range (NO in step S511), the control unit 21 notifies the smartphone held by the relevant person (step S517). The notification in step S517 may include input breaker off information indicating that the converter input breaker 351 is likely to be in the off state. Here, the case where it is not within the normal range means that the voltage V2 is smaller than a predetermined voltage output from the power converter 32, specifically, the case where the voltage from the power converter 32 is not output.

[0069] The control unit 21 waits for the elapse of a predetermined period such as the standard time required for the operation of returning the converter input breaker 351 to the on state by the timer (step S518). The control unit 21 determines whether or not the discharge of the storage battery 33 has stopped based on the latest data received from the storage battery output sensor 343 (step S519). If it is determined that the discharge has stopped (YES in step S519), the control unit 21 ends the process. If it is determined that the discharge has not stopped (NO in step S519), the control unit 21 returns to step S517.

[0070] Since the specific example of the notification transmitted by the control unit 21 to the smartphone in step S517 is the same as the notification in step S514, the description is omitted. In step S514 and step S517, the control unit 21 may add the breaker 35 that is likely to be in the off state since the first notification to the notification.

[0071] [Modification Example 1] When it is determined in step S516 or step S519 in FIG. 9 that the discharge of the storage battery 33 has not stopped (NO in step S516 or step S519), the control unit 21 may return to step S501. For example, even if there is a change in the state of the power supply device 30 from step S501 until reaching step S516 or step S519, a power supply device monitoring system 10 that can send an appropriate notification to the smartphone can be provided.

[0072] [Modification Example 2] This modified example relates to a program that does not notify that maintenance work is in progress. FIG. 10 is a flowchart for explaining the processing flow of the program of Modified Example 2. The program in FIG. 10 is executed instead of the program described using FIG. 9.

[0073] The control unit 21 determines whether or not the voltage V1 detected by the input sensor 341 is within the normal range (step S501). When it is determined that the voltage V1 is not within the normal range (NO in step S501), the control unit 21 notifies the smartphone possessed by the relevant person that a power outage has occurred (step S502). When it is determined that the voltage V1 is within the normal range (YES in step S501), the control unit 21 waits for the elapse of the standard maintenance work time by the timer (step S561).

[0074] The control unit 21 determines whether or not the discharge of the storage battery 33 has stopped based on the latest data received from the storage battery output sensor 343 (step S562). When it is determined that the discharge has stopped (YES in step S562), the control unit 21 ends the process. When it is determined that the discharge has not stopped (NO in step S562), the control unit 21 determines whether or not the voltage V2 detected by the converter output sensor 342 is within the normal range (step S511). Since the subsequent processing is the same as the processing flow of the program described using FIG. 9, the description is omitted.

[0075] According to this modified example, a power supply device monitoring system 10 that does not trouble the user with a notification that maintenance work is in progress can be provided.

[0076] [Modified Example 3] When the reason for the continuous discharge from the storage battery 33 is clear, such as when the maintenance work takes longer than usual, the user may find the notification sent to the smartphone in step S514 or step S517 bothersome. This modified example relates to a power supply device monitoring system 10 in which the user can stop the notification.

[0077] When receiving the notification in step S514 or step S517, the control unit 21 adds a link described as, for example, "Stop the notification hereafter" or the like. When receiving the selection of the link by the user, the control unit 21 stops the program in FIG. 9 or FIG. 10. Thus, the notification to all related parties stops.

[0078] When receiving the selection of the link by the user, the control unit 21 may stop only the notification to the smartphone of the user who selected the link. The notification to other users is repeated without stopping.

[0079] When receiving the selection of the link by the user, the control unit 21 may increase the time of the timer in step S515 or step S518. A power supply device monitoring system 10 that can cope with the case where the breaker 35 is forgotten to be restored after the maintenance work has been prolonged can be provided.

[0080] Separate from the program described using FIG. 9 or FIG. 10, a program for accessing the information processing device 20 to stop the notification to the smartphone may be installed in the smartphone.

[0081] [Embodiment 2] This embodiment relates to a power supply device monitoring system 10 that estimates the cause of the discharge from the storage battery 33 using a learning model generated by machine learning. For parts common to Embodiment 1, the description is omitted.

[0082] FIG. 11 is a diagram for explaining the learning model 41. The learning model 41 is a model trained by machine learning so as to receive measurement data such as voltage and current measured by each sensor 34 and output a result of estimating the reason for the discharge from the storage battery 33. The measurement data may be the latest instantaneous value or time-series data.

[0083] The input data may include the maintenance work schedule of the power supply device 30, data such as temperature and air pressure, or records regarding past maintenance work. The input data may include measurement data obtained from the neighboring office 83. The learning model 41 is trained using a training database in which a large number of past measurement data and the causes of the discharge from the storage battery 33 are recorded in pairs.

[0084] The output data includes the occurrence probability for each of the various causes of the discharge from the storage battery 33. The items shown in the output data of FIG. 11 are examples. The learning model 41 may output the reliability of the probability in addition to each probability.

[0085] FIG. 12 is a flowchart for explaining the processing flow of the program according to Embodiment 2. The flowchart of FIG. 12 is a monitoring flowchart of the power supply device 30 for a program that the control unit 21 activates when it is detected by the storage battery output sensor 343 that the storage battery 33 is discharging.

[0086] The control unit 21 determines whether the power supply device 30 is under maintenance work by referring to, for example, the maintenance work schedule of the power supply device 30 (step S531). When it is determined that the device is under maintenance work (YES in step S531), the control unit 21 notifies the smartphone held by the relevant person that the power supply device 30 is under maintenance work (step S532).

[0087] The control unit 21 waits for a predetermined period such as the standard maintenance work time by means of a timer (step S533). The control unit 21 determines whether the discharge of the storage battery 33 has stopped based on the latest data received from the storage battery output sensor 343 (step S534). When it is determined that the discharge has stopped (YES in step S534), the control unit 21 ends the process. When it is determined that the discharge has not stopped (NO in step S534), the control unit 21 returns to step S531.

[0088] When it is determined that it is not in the maintenance operation (NO in step S531), the control unit 21 inputs input data such as data measured by the sensor 34 into the learning model 41, and acquires output data output from the learning model 41 (step S541).

[0089] The control unit 21 determines whether to suspend the determination regarding the discharge cause of the storage battery 33 (step S542). Specifically, for example, if the item showing the highest probability among the output data does not exceed a predetermined threshold such as 70 percent, the control unit 21 determines to suspend. The control unit 21 may also determine to suspend when the reliability of the item showing the highest probability among the output data does not exceed a predetermined threshold.

[0090] When it is determined to suspend (YES in step S542), the control unit 21 acquires the latest measurement data from the sensor 34 and returns to step S541. When it is determined not to suspend (NO in step S542), it is determined whether the item showing the highest probability among the output data is a power outage (step S543).

[0091] When it is determined that there is a power outage (YES in step S543), the control unit 21 notifies the smartphone possessed by the relevant person that a power outage has occurred (step S544). The control unit 21 ends the process.

[0092] When it is determined that there is no power outage (NO in step S543), the control unit 21 determines whether it is a work mistake such as any one of the circuit breakers 35 being in the off state (step S545). When it is determined that there is a work mistake (YES in step S545), the control unit 21 notifies the smartphone possessed by the relevant person that there is a high possibility of a work mistake and information regarding the location where the work mistake is highly likely to have occurred (step S546).

[0093] When it is determined that it is not a work error (NO in step S545), the control unit 21 notifies the smartphone held by the relevant person that it is estimated that the item with the highest probability among the output data is the cause of the discharge of the storage battery 33 (step S547). The causes of the discharge of the storage battery 33 notified here include, for example, failures of the power converter 32, the power receiving equipment 85, or the breaker 35. After the end of step S546 or step S547, the control unit 21 ends the process.

[0094] According to the present embodiment, by using the learning model 41, it is possible to provide the power supply device monitoring system 10 that notifies even the causes other than simple mistakes such as forgetting to turn on the breaker 35.

[0095] [Embodiment 3] FIG. 13 is a diagram for explaining the configuration of the power supply device monitoring system 10 according to Embodiment 3. The present embodiment relates to a form in which the power supply device monitoring system 10 is realized by operating in combination with a general-purpose computer 90 and a program 97. The description of the parts common to Embodiment 1 is omitted.

[0096] The computer 90 includes a reading unit 29 in addition to the aforementioned control unit 21, main storage device 22, auxiliary storage device 23, communication unit 24, display unit 25, input unit 26, and bus.

[0097] The program 97 is recorded on a portable recording medium 96. The control unit 21 reads the program 97 via the reading unit 29 and stores it in the auxiliary storage device 23. Further, the control unit 21 may read the program 97 stored in a semiconductor memory 98 such as a flash memory mounted in the computer 90. Furthermore, the control unit 21 may download the program 97 from another computer (not shown) connected via the communication unit 24 and a network (not shown) and store it in the auxiliary storage device 23. The program 97 is installed as a control program for the computer 90, loaded into the main storage device 22, and executed.

[0098] As described above, the power supply device monitoring system 10 described in Embodiment 1 is realized. The program 97 of the present embodiment is an example of a program product. A computer program can be deployed to be executed on a single computer, or placed at one site, or distributed over a plurality of sites and executed on a plurality of computers interconnected by a communication network.

[0099] A computer program can be deployed to be executed on a single computer, or placed at one site, or distributed over a plurality of sites and executed on a plurality of computers interconnected by a communication network.

[0100] The above-described embodiments are summarized below. (1) A power supply device including a power receiving terminal, an output terminal, a storage battery that supplies power to the output terminal when power is not supplied to the power receiving terminal, and a power converter that converts the power supplied through the power receiving terminal and supplies it to the output terminal, obtains the operating state of the storage battery, obtains the input voltage input to the power receiving terminal, the converter output voltage and converter output current output from the power converter, when the storage battery is discharging, the input voltage is normal, and the converter output voltage is not normal, outputs input breaker off information indicating that the converter input breaker arranged between the power receiving terminal and the power converter may be in an off state, when the storage battery is discharging, the input voltage and the converter output voltage are normal, and the converter output current is not normal, outputs output breaker off information indicating that the converter output breaker arranged between the power converter and the output terminal may be in an off state A method for monitoring a power supply device in which a computer executes the processing. (2) When the storage battery is discharging, and the input voltage, the converter output voltage, and the converter output current are normal, The monitoring method of the power supply device according to (1) above, which outputs overload information indicating that the power consumption of the load connected to the output terminal may be excessive. (3) After outputting the input breaker off information, if the storage battery is discharging after a predetermined time has elapsed, output the input breaker off information again. The monitoring method of the power supply device according to (1) or (2) above, which outputs the output breaker off information again if the storage battery is discharging after a predetermined time has elapsed after outputting the output breaker off information. (4) After outputting the input breaker off information or the output breaker off information, obtain the operating state of the storage battery after a predetermined time has elapsed. If the storage battery is not discharging, end the process. If the storage battery is discharging. Obtain the input voltage, the converter output voltage, and the converter output current. If the input voltage is normal and the converter output voltage is not normal, output the input breaker off information. The monitoring method of the power supply device according to any one of (1) to (3) above, which outputs the output breaker off information if the input voltage and the converter output voltage are normal and the converter output current is not normal. (5) Obtain the operating state of the storage battery from a power supply device including a power receiving terminal, an output terminal, a storage battery that supplies power to the output terminal when power is not supplied to the power receiving terminal, and a power converter that converts the power supplied via the power receiving terminal and supplies it to the output terminal. Obtain the input voltage input to the power receiving terminal, the converter output voltage and the converter output current output from the power converter. If the storage battery is discharging, the input voltage is normal, and the converter output voltage is not normal, output input breaker off information indicating that the converter input breaker arranged between the power receiving terminal and the power converter may be in an off state. When the storage battery is discharging, the input voltage and the converter output voltage are normal, and the converter output current is not normal, output output breaker off information indicating that the converter output breaker arranged between the power converter and the output terminal may be in the off state. A monitoring program for a power supply device that causes a computer to execute processing. (6) An information processing apparatus including a control unit, The control unit, Obtain the operating state of the storage battery via a network from a power supply device including a power receiving terminal, an output terminal, a storage battery that supplies power to the output terminal when power is not supplied to the power receiving terminal, and a power converter that converts the power supplied via the power receiving terminal and supplies it to the output terminal, Obtain the input voltage input to the power receiving terminal, the converter output voltage and the converter output current output from the power converter via a network, When the storage battery is discharging, the input voltage is normal, and the converter output voltage is not normal, output input breaker off information indicating that the converter input breaker arranged between the power receiving terminal and the power converter may be in the off state. When the storage battery is discharging, the input voltage and the converter output voltage are normal, and the converter output current is not normal, output output breaker off information indicating that the converter output breaker arranged between the power converter and the output terminal may be in the off state. Information processing apparatus. (7) A power supply device monitoring system including an information processing apparatus and a power supply device connected to the information processing apparatus via a network, The power supply device, A power receiving terminal, An output terminal, A storage battery that supplies power to the output terminal when power is not supplied from the power receiving terminal, A power converter that converts the power supplied via the power receiving terminal and supplies it to the output terminal, The information processing apparatus includes a control unit, The control unit, Obtain the operating state of the storage battery from the power supply device via a network, Obtain, via a network, the input voltage input to the power receiving terminal, the converter output voltage and the converter output current output from the power converter, When the storage battery is discharging, the input voltage is normal, and the converter output voltage is not normal, output input breaker off information indicating the possibility that the converter input breaker arranged between the power receiving terminal and the power converter is in the off state, When the storage battery is discharging, the input voltage and the converter output voltage are normal, and the converter output current is not normal, output output breaker off information indicating the possibility that the converter output breaker arranged between the power converter and the output terminal is in the off state Power supply device monitoring system.

[0101] The technical features (constituent elements) described in each embodiment can be combined with each other, and by combining them, new technical features can be formed. The embodiments disclosed this time should be considered as illustrative in all respects and not restrictive. The scope of the present invention is shown not by the above meaning but by the scope of claims, and it is intended that all modifications within the meaning and scope equivalent to the scope of claims are included. The independent claims and dependent claims described in the scope of claims can be combined with each other in any combination regardless of the citation form. Furthermore, the scope of claims uses a form (multi-claim form) of describing a claim that cites two or more other claims, but is not limited thereto. A form of describing a multi-claim (multi-multi-claim) that cites at least one multi-claim may be used.

[0102] Furthermore, the present invention includes the following embodiments. Any of the configurations (2) to (4) described above may be applied to the following embodiments. Obtaining the operating state of the storage battery from a power supply device including a power receiving terminal, an output terminal, a storage battery that supplies power to the output terminal when power is not supplied to the power receiving terminal, and a power converter that converts the power supplied via the power receiving terminal and supplies it to the output terminal, Obtaining the input voltage input to the power receiving terminal and the converter output voltage output from the power converter, When the storage battery is discharging, the input voltage is normal, and the converter output voltage is not normal, outputting input breaker off information indicating the possibility that the converter input breaker disposed between the power receiving terminal and the power converter is in an off state A monitoring method for a power supply device in which a computer executes processing. (9) Obtaining the operating state of the storage battery from a power supply device including a power receiving terminal, an output terminal, a storage battery that supplies power to the output terminal when power is not supplied to the power receiving terminal, and a power converter that converts the power supplied via the power receiving terminal and supplies it to the output terminal, Obtaining the input voltage input to the power receiving terminal, the converter output voltage and the converter output current output from the power converter, When the storage battery is discharging, the input voltage and the converter output voltage are normal, and the converter output current is not normal, outputting output breaker off information indicating the possibility that the converter output breaker disposed between the power converter and the output terminal is in an off state A monitoring method for a power supply device in which a computer executes processing. (10) Obtaining the operating state of the storage battery from a power supply device including a power receiving terminal, an output terminal, a storage battery that supplies power to the output terminal when power is not supplied to the power receiving terminal, and a power converter that converts the power supplied via the power receiving terminal and supplies it to the output terminal, Obtaining the input voltage input to the power receiving terminal and the converter output voltage output from the power converter, When the storage battery is discharging, the input voltage is normal, and the converter output voltage is not normal, output input breaker off information indicating that the converter input breaker arranged between the power receiving terminal and the power converter may be in an off state. A monitoring program for a power supply device that causes a computer to execute processing. (11) Obtain the operating state of the storage battery from a power supply device including a power receiving terminal, an output terminal, a storage battery that supplies power to the output terminal when power is not supplied to the power receiving terminal, and a power converter that converts the power supplied through the power receiving terminal and supplies it to the output terminal. Obtain the input voltage input to the power receiving terminal, the converter output voltage and the converter output current output from the power converter. When the storage battery is discharging, the input voltage and the converter output voltage are normal, and the converter output current is not normal, output output breaker off information indicating that the converter output breaker arranged between the power converter and the output terminal may be in an off state. A monitoring program for a power supply device that causes a computer to execute processing. (12) An information processing device including a control unit. The control unit Obtain the operating state of the storage battery from a power supply device including a power receiving terminal, an output terminal, a storage battery that supplies power to the output terminal when power is not supplied to the power receiving terminal, and a power converter that converts the power supplied through the power receiving terminal and supplies it to the output terminal via a network. Obtain the input voltage input to the power receiving terminal and the converter output voltage output from the power converter via a network. When the storage battery is discharging, the input voltage is normal, and the converter output voltage is not normal, output input breaker off information indicating that the converter input breaker arranged between the power receiving terminal and the power converter may be in an off state. Information processing device. (13) An information processing device including a control unit. The control unit A power supply device including a power receiving terminal, an output terminal, a storage battery that supplies power to the output terminal when power is not supplied to the power receiving terminal, and a power converter that converts the power supplied through the power receiving terminal and supplies it to the output terminal, obtains the operating state of the storage battery via a network, obtains the input voltage input to the power receiving terminal, the converter output voltage and the converter output current output from the power converter via a network, When the storage battery is discharging, the input voltage and the converter output voltage are normal, and the converter output current is not normal, outputs output breaker off information indicating the possibility that the converter output breaker disposed between the power converter and the output terminal is in an off state An information processing device. (14) A power supply device monitoring system including an information processing device and a power supply device connected to the information processing device via a network, wherein the power supply device includes a power receiving terminal, an output terminal, a storage battery that supplies power to the output terminal when power is not supplied from the power receiving terminal, and a power converter that converts the power supplied through the power receiving terminal and supplies it to the output terminal, the information processing device includes a control unit, wherein the control unit obtains the operating state of the storage battery from the power supply device via a network, obtains the input voltage input to the power receiving terminal and the converter output voltage output from the power converter via a network, When the storage battery is discharging, the input voltage is normal, and the converter output voltage is not normal, outputs input breaker off information indicating the possibility that the converter input breaker disposed between the power receiving terminal and the power converter is in an off state A power supply device monitoring system. (15) A power supply device monitoring system including an information processing device and a power supply device connected to the information processing device via a network, wherein the power supply device A power receiving terminal, an output terminal, a storage battery that supplies power to the output terminal when power is not supplied from the power receiving terminal, and a power converter that converts the power supplied via the power receiving terminal and supplies it to the output terminal, The information processing apparatus includes a control unit, The control unit, acquires the operating state of the storage battery from the power supply device via a network, acquires, via a network, the input voltage input to the power receiving terminal, the converter output voltage and the converter output current output from the power converter, When the storage battery is discharging, the input voltage and the converter output voltage are normal, and the converter output current is not normal, output breaker off information indicating the possibility that the converter output breaker disposed between the power converter and the output terminal is in an off state. A power supply device monitoring system.

[0103] Furthermore, the present invention includes the following embodiments in which a sensor 34 that acquires a physical quantity other than current and voltage, such as an image sensor, is used. Any of the configurations (2) to (4) described above may be applied to the following embodiments. (16) From a power supply device including a power receiving terminal, an output terminal, a storage battery that supplies power to the output terminal when power is not supplied to the power receiving terminal, and a power converter that converts the power supplied via the power receiving terminal and supplies it to the output terminal, acquire the operating state of the storage battery, acquire the state of a breaker disposed between the power receiving terminal and the output terminal, When the storage battery is discharging, based on the acquired state of the breaker, output breaker off information indicating the possibility that the breaker is in an off state. A method for monitoring a power supply device, which is executed by a computer.

Description of Reference Numerals

[0104] 10 Power supply device monitoring system 20 Information processing device 30 Power supply device 311 Power receiving terminal 315 Output terminal 32 Power converter 33 Storage battery 34 Sensor 341 Input sensor 342 Converter output sensor 343 Storage battery output sensor 35 Breaker 351 Converter input breaker 352 Converter output breaker 353 Load input breaker 36 Storage battery connection point

Claims

1. acquiring an operating state of the storage battery from a power supply device including a power receiving terminal, an output terminal, a storage battery that supplies power to the output terminal when power is not supplied to the power receiving terminal, and a power converter that converts the power supplied via the power receiving terminal and supplies the converted power to the output terminal; An input voltage input to the power receiving terminal, and a converter output voltage and a converter output current output from the power converter are obtained; When the storage battery is discharged, the input voltage is normal, and the converter output voltage is not normal, outputting input breaker off information indicating that a converter input breaker disposed between the power receiving terminal and the power converter may be in an off state; When the storage battery is discharged, the input voltage and the converter output voltage are normal, and the converter output current is not normal, outputting output breaker off information indicating that a converter output breaker disposed between the power converter and the output terminal may be in an off state. A method for monitoring a power supply device in which a computer executes a process.

2. When the storage battery is discharged and the input voltage, the converter output voltage, and the converter output current are normal, Outputting overload information indicating the possibility that the power consumption of the load connected to the output terminal is excessive The method for monitoring a power supply device according to claim 1 .

3. If the storage battery is discharged after a predetermined time has elapsed after outputting the input breaker off information, output the input breaker off information again; If the storage battery is discharged after a predetermined time has elapsed after the output breaker off information is output, the output breaker off information is output again. The method for monitoring a power supply device according to claim 1 .

4. acquiring an operating state of the storage battery after a predetermined time has elapsed after the input breaker off information or the output breaker off information is output; If the battery is not discharged, the process ends. When the storage battery is discharged, obtaining the input voltage, the converter output voltage, and the converter output current; If the input voltage is normal and the converter output voltage is not normal, output the input breaker off information; If the input voltage and the converter output voltage are normal and the converter output current is not normal, output the output breaker off information. The method for monitoring a power supply device according to any one of claims 1 to 3.

5. acquiring an operating state of the storage battery from a power supply device including a power receiving terminal, an output terminal, a storage battery that supplies power to the output terminal when power is not supplied to the power receiving terminal, and a power converter that converts the power supplied via the power receiving terminal and supplies the converted power to the output terminal; An input voltage input to the power receiving terminal, and a converter output voltage and a converter output current output from the power converter are obtained; When the storage battery is discharged, the input voltage is normal, and the converter output voltage is not normal, outputting input breaker off information indicating that a converter input breaker disposed between the power receiving terminal and the power converter may be in an off state; When the storage battery is discharged, the input voltage and the converter output voltage are normal, and the converter output current is not normal, outputting output breaker off information indicating that a converter output breaker disposed between the power converter and the output terminal may be in an off state. A power supply monitoring program that causes a computer to execute a process.

6. An information processing device including a control unit, The control unit is a power supply device including a power receiving terminal, an output terminal, a storage battery that supplies power to the output terminal when power is not supplied to the power receiving terminal, and a power converter that converts the power supplied via the power receiving terminal and supplies the converted power to the output terminal; An input voltage input to the power receiving terminal, and a converter output voltage and a converter output current output from the power converter are acquired via a network; When the storage battery is discharged, the input voltage is normal, and the converter output voltage is not normal, outputting input breaker off information indicating that a converter input breaker disposed between the power receiving terminal and the power converter may be in an off state; When the storage battery is discharged, the input voltage and the converter output voltage are normal, and the converter output current is not normal, outputting output breaker off information indicating that a converter output breaker disposed between the power converter and the output terminal may be in an off state. Information processing device.

7. A power supply device monitoring system including an information processing device and a power supply device connected to the information processing device via a network, The power supply device is A receiving terminal; An output terminal; a storage battery that supplies power to the output terminal when power is not supplied from the power receiving terminal; a power converter that converts the power supplied via the power receiving terminal and supplies the converted power to the output terminal, The information processing device includes a control unit, The control unit is acquiring an operating state of the storage battery from the power supply device via a network; An input voltage input to the power receiving terminal, and a converter output voltage and a converter output current output from the power converter are acquired via a network; When the storage battery is discharged, the input voltage is normal, and the converter output voltage is not normal, outputting input breaker off information indicating that a converter input breaker disposed between the power receiving terminal and the power converter may be in an off state; When the storage battery is discharged, the input voltage and the converter output voltage are normal, and the converter output current is not normal, outputting output breaker off information indicating that a converter output breaker disposed between the power converter and the output terminal may be in an off state. Power supply monitoring system.

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