JP2016144296A - Power source management device, operation method for power source management device, and power supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a problem from occurring, by automatically selecting a communication control server whose power supply should be stopped, from a plurality of communication control servers receiving power supplied from an emergency power source facility.SOLUTION: A power source management device transmits, through a communication control server, a confirmation signal to a communication channel to which a terminal is to connected (S1); and receives, through a communication control server, a response signal transmitted from a terminal in use (S3). The power source management device calculates an index value showing the number of response signals received through one communication control server (S5); and determines whether or not the index value is equal to or lower than a predetermined threshold (S7). The power source management device, when the index value is equal to or lower than the threshold (S7:YES), selects the communication control server as a communication control server to which power supply should be stopped (S9).SELECTED DRAWING: Figure 3

Description

  The present invention relates to a technique for selecting a communication control server that should stop power supply from a plurality of communication control servers that receive power supply from an emergency power supply facility.

  In communication systems, even if commercial power is not available due to a power outage, etc., power is supplied to the communication control server from the rechargeable battery or generator of the emergency power supply facility. To prevent.

  However, if a large-scale disaster or the like occurs and the power supply from the emergency power supply facility is prolonged, for example, if a rechargeable battery is used, the amount of remaining power is reduced, and many communication control servers are degraded. There is a problem that it stops functioning.

  As a countermeasure to this problem, for example, there is a case where a maintenance person selects some communication control servers to stop power supply, and prevents a function deterioration or a function stop in the remaining communication control servers.

JP-A-1-73894 JP2013-143618A

  However, for example, if there are many terminals connected to the communication control server whose power supply has been stopped, many of the terminals cannot be used.

  Further, when a communication control server whose power supply has been stopped is used for emergency calls (110, 119, etc.) that are high-grade services, emergency calls cannot be performed.

  That is, in the related art, a problem may occur depending on which communication control server is selected.

  In view of the above circumstances, the present invention provides a technique for automatically selecting a communication control server that should stop power supply from a plurality of communication control servers that receive power supply from an emergency power supply facility, and preventing the occurrence of problems. For the purpose.

  In order to solve the above-described problem, a first aspect of the present invention is a power management apparatus that selects a communication control server to stop power supply from among a plurality of communication control servers that receive power supply from a rechargeable battery of an emergency power supply facility. And a monitoring unit that monitors the remaining power amount of the rechargeable battery, and if the remaining power amount is equal to or less than a predetermined set power amount, a communication line is connected to any of the plurality of communication control servers. A confirmation signal is transmitted to the connected terminal via the communication control server, and when the terminal is used, a response signal transmitted from the terminal is received via the communication control server. An index value indicating the number of response signals received via the communication control server is obtained, and if the index value is equal to or less than a predetermined threshold value, the communication is performed as the communication control server to stop the power supply. Characterized in that it comprises a selector for selecting control server.

  2nd this invention is a power management apparatus which selects the communication control server which should stop the said electric power supply from the several communication control server which receives electric power supply from the rechargeable battery of emergency power supply equipment, Comprising: The said communication control A grade information storage unit that stores grade information including a list of communication control servers corresponding to the grade for each grade of service provided via the server, a monitoring unit that monitors the remaining power amount of the rechargeable battery, If the remaining power amount is equal to or lower than a predetermined set power amount, the grade information corresponding to a grade equal to or lower than the predetermined grade is retrieved from the grade information storage unit, and the communication control server to stop the power supply And a selection unit that selects a communication control server included in the list in the grade information.

  3rd this invention is a power management apparatus which selects the communication control server which should stop the said power supply from the some communication control server which receives power supply from the rechargeable battery of emergency power supply equipment, Comprising: The said communication control For each grade of service provided through the server, a grade information storage unit that stores a list of communication control servers corresponding to the grade and grade information including a threshold value to be applied to the grade, and a remaining power amount of the rechargeable battery A monitoring unit that monitors the amount of power, and if the remaining power amount is less than or equal to a predetermined set power amount, a terminal connected to any one of the plurality of communication control servers via a communication line via the communication control server A confirmation signal is transmitted, and when the terminal is used, a response signal transmitted from the terminal is received via the communication control server. An index value indicating the number of response signals received via the control server is obtained, and grade information including a list including the communication control server is retrieved from the grade information storage unit, and a threshold value is read from the grade information. When the index value is equal to or less than the threshold value, a selection unit that selects the communication control server as a communication control server to stop the power supply is provided.

  For example, in the third aspect of the present invention, the at least one grade information of the grade information storage unit includes a first threshold value and a second threshold value higher than the first threshold value, and the selection unit includes the search If the grade information includes the first threshold value and the second threshold value, it is determined whether the remaining power amount is higher than a predetermined second set power amount lower than the set power amount, and the remaining power amount is determined. If the power amount is higher than the second set power amount, the first threshold value is read from the grade information, while if the remaining power amount is equal to or less than the second set power amount, the second threshold value is determined from the grade information. When the read index value is equal to or less than the read threshold value, the corresponding communication control server is selected as the communication control server to stop the power supply.

  According to a fourth aspect of the present invention, there is provided a power management apparatus for selecting an emergency power supply facility and a communication control server to stop power supply from among a plurality of communication control servers receiving power supply from a rechargeable battery of the emergency power supply facility. A power supply system comprising: a monitoring unit that monitors a remaining power amount of the rechargeable battery; and the plurality of communication controls when the remaining power amount is equal to or less than a predetermined set power amount. A confirmation signal is transmitted via a communication control server to a terminal connected to one of the servers via a communication line, and when the terminal is used, a response signal transmitted from the terminal is transmitted via the communication control server. For each communication control server, an index value indicating the number of response signals received via the communication control server is obtained, and if the index value is equal to or less than a predetermined threshold, the power Characterized in that the communication control server should stop feeding and a selector for selecting the communication control server.

  According to a fifth aspect of the present invention, there is provided a power management apparatus for selecting an emergency power supply facility and a communication control server to stop power supply from among a plurality of communication control servers receiving power supply from a rechargeable battery of the emergency power supply facility. The power supply system includes a grade information storage unit that stores, for each grade of service provided via the communication control server, grade information including a list of communication control servers corresponding to the grade. A monitoring unit that monitors the remaining power amount of the rechargeable battery, and a grade corresponding to a grade that is equal to or lower than a predetermined grade from the grade information storage unit if the remaining power amount is equal to or lower than a predetermined set power amount. Select to search information and select a communication control server included in the list in the grade information as a communication control server to stop the power supply Characterized in that it comprises and.

  According to a sixth aspect of the present invention, there is provided a power management apparatus for selecting an emergency power supply facility and a communication control server to stop power supply from among a plurality of communication control servers receiving power supply from a rechargeable battery of the emergency power supply facility. A power supply system comprising: a grade including a list of communication control servers corresponding to the grade and a threshold value to be applied to the grade for each grade of service provided via the communication control server A grade information storage unit that stores information, a monitoring unit that monitors the remaining power amount of the rechargeable battery, and if the remaining power amount is equal to or less than a predetermined set power amount, any of the plurality of communication control servers A response sent from the terminal when the terminal is being used by sending a confirmation signal via the communication control server to the terminal connected to the terminal via the communication line An index value indicating the number of response signals received via the communication control server for each communication control server, and obtaining an index value indicating the number of response signals from the grade information storage unit. Search for grade information including a list including a control server, read a threshold value from the grade information, and select the communication control server as a communication control server to stop power supply if the index value is equal to or lower than the threshold value And a section.

  The seventh aspect of the present invention is an operation method of a power management apparatus for selecting a communication control server to stop power supply from among a plurality of communication control servers receiving power supply from a rechargeable battery of an emergency power supply facility, The power management device monitors the remaining power amount of the rechargeable battery, and when the remaining power amount is equal to or less than a predetermined set power amount, the power management device is set to one of the plurality of communication control servers. A confirmation signal is transmitted to a terminal connected via a communication line via a communication control server, and when the terminal is used, a response signal transmitted from the terminal is received via the communication control server, For each communication control server, an index value indicating the number of response signals received via the communication control server is obtained, and if the index value is equal to or less than a predetermined threshold value, the communication control to stop the power supply Sir And selects the communication control server as.

  The eighth aspect of the present invention is an operation method of a power management apparatus for selecting a communication control server to stop power supply from among a plurality of communication control servers receiving power supply from a rechargeable battery of an emergency power supply facility, The power management device includes a grade information storage unit that stores grade information including a list of communication control servers corresponding to the grade for each grade of service provided via the communication control server, and the operation method includes: The power management device monitors the remaining power amount of the rechargeable battery, and the power management device determines a predetermined grade from the grade information storage unit when the remaining power amount is equal to or less than a predetermined set power amount. Search for grade information corresponding to the following grades, and select a communication control server included in the list in the grade information as a communication control server to stop the power supply. Characterized in that it-option.

  A ninth aspect of the present invention is an operation method of a power management apparatus for selecting a communication control server to stop power supply from among a plurality of communication control servers receiving power supply from a rechargeable battery of an emergency power supply facility, The power management apparatus stores a grade information storage unit that stores, for each grade of service provided via the communication control server, a list of communication control servers corresponding to the grade and grade information including a threshold value to be applied to the grade And the power management device monitors the remaining power amount of the rechargeable battery, and the power management device, when the remaining power amount is less than or equal to a predetermined set power amount, A confirmation signal is transmitted via the communication control server to a terminal connected to one of the communication control servers via a communication line, and sent from the terminal when the terminal is in use. The response signal is received via the communication control server, and for each communication control server, an index value indicating the number of response signals received via the communication control server is obtained, and the grade information storage unit Is retrieved from the grade information including the list including the communication control server, the threshold value is read from the grade information, and if the index value is equal to or less than the threshold value, the communication control server is selected as the communication control server to stop the power supply. It is characterized by selecting.

  ADVANTAGE OF THE INVENTION According to this invention, the communication control server which should stop the electric power supply from emergency power supply equipment can be selected, and generation | occurrence | production of the various problems which arise depending on the selection result can be prevented.

It is a figure which shows schematic structure of the electric power supply system which concerns on the 1st-3rd embodiment. It is a block diagram which shows schematic structure of the power supply management apparatus 1 used by 1st Embodiment. 4 is a flowchart showing a flow of operation of the selection unit 12. It is a block diagram which shows schematic structure of 1 A of power management apparatuses used by 2nd Embodiment. It is a block diagram which shows schematic structure of the power supply management apparatus 1B used by 3rd Embodiment. 6 is a flowchart showing a flow of operation of the selection unit 113. It is a figure which shows the specific example of the control in 3rd Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram illustrating a schematic configuration of a power supply system according to first to third embodiments.
The power supply system includes a power management device 1 used in the first embodiment, a power management device 1A used in the second embodiment, or a power management device 1B used in the third embodiment. And an emergency power supply facility 2 having a rechargeable battery 21.

  The emergency power supply facility 2 is connected to a plurality of communication control servers 3 of the communication system via a power supply line so as to supply power from the rechargeable battery 21 in an emergency such as a power failure. Each communication control server 3 is connected to a plurality of terminals 4 via a communication line. Some communication control servers 3 may be connected to each other via a communication line.

  The power management device 1 and the like are connected to the emergency power supply facility 2 via a control line in order to control the emergency power supply facility 2. The power management device 1 or the like is connected to each communication control server 3 via a signal line so as to transmit a signal to the terminal 4 via each communication control server 3 and receive a signal from the terminal 4.

[First Embodiment]
FIG. 2 is a block diagram showing a schematic configuration of the power management apparatus 1 used in the first embodiment.
The power management apparatus 1 includes a monitoring unit 11 that monitors the remaining power amount of the rechargeable battery 21, a selection unit 12 that selects a communication control server to stop power supply, and power supply to the selected communication control server is stopped. The control part 13 which controls the emergency power supply equipment 2 is provided.

The monitoring unit 11 operates the selection unit 12 when the remaining power amount of the rechargeable battery 21 becomes equal to or less than a predetermined set power amount.
The selection unit 12 transmits a confirmation signal to select a communication control server to stop power supply, and receives a response signal transmitted in response to the confirmation signal.

FIG. 3 is a flowchart showing an operation flow of the selection unit 12.
The selection unit 12 transmits a confirmation signal to each terminal 4 via the communication control server 3 (S1).
When the terminal 4 is used, for example, when the terminal 4 is capable of receiving a call or when a call is made on the terminal 4, a response signal is transmitted from the terminal 4. A response signal is received via the communication control server 3 (S3).

If all the response signals are received after a predetermined period, the selection unit 12 performs processing for each communication control server 3.
The selection unit 12 targets one of the unprocessed communication control servers 3 and calculates an index value indicating the number of response signals received via the communication control server 3 (S5). The index value is, for example, a ratio of the number of response signals to the total number of terminals 4 connected to the corresponding communication control server 3. The index value may be the number of response signals themselves.

Next, the selection unit 12 determines whether or not the index value is equal to or less than a predetermined threshold (S7).
If the index value is equal to or smaller than the threshold value (S7: YES), the selection unit 12 selects the corresponding communication control server 3 as the communication control server whose power supply should be stopped (S9).

  If the index value is higher than the threshold value (S7: NO), or after step S9, the selection unit 12 determines whether or not the processing has been completed for all the communication control servers 3 (S11).

  If all the processes are not finished (S11: NO), the selection unit 12 returns to step S5, and if all the processes are finished (S11: YES), the operation of the flowchart is finished.

  Returning to FIG. 2, the control unit 13 controls the emergency power supply facility 2 so that power supply to the selected communication control server is stopped. Thereby, the power supply to the selected communication control server is stopped. Instead of the control unit 13, a maintenance person may control the emergency power supply facility 2. In that case, the control part 13 is unnecessary. The same applies to the following embodiments.

  Therefore, according to the first embodiment, power supply to the communication control server 3 to which many unused terminals 4 are connected is stopped, and as a result, many terminals 4 in use become unusable. The occurrence of problems can be prevented.

[Second Embodiment]
FIG. 4 is a block diagram showing a schematic configuration of the power management device 1A used in the second embodiment.
The power management apparatus 1A includes a grade information storage unit 101 that stores grade information including a list of communication control servers corresponding to the grade for each grade of service provided via the communication control server, and the remaining power of the rechargeable battery 21 The monitoring unit 102 that monitors the amount and the grade information corresponding to a grade below a predetermined grade are searched from the grade information storage unit 101 and included in the list in the grade information as a communication control server that should stop power supply. A selection unit 103 that selects a communication control server and a control unit 13 that controls the emergency power supply facility 2 to stop power supply to the selected communication control server are provided. A, B, C, etc. in the list in the figure indicate simplified identifiers of the communication control server.

  The grade information storage unit 101 corresponds to, for example, grade information including a list of communication control servers corresponding to grades with high service importance (high grade) and grades with low service importance (low grade). Grade information including a list of communication control servers is stored.

The service corresponding to the high grade is, for example, an emergency call (110, 119, etc.). For example, a grade corresponding to a service provided to a specific user group may be a high grade.
The number of grades may be 3 or more. The same applies to the third embodiment.

  The monitoring unit 102 operates the selection unit 103 when the remaining power amount of the rechargeable battery 21 becomes equal to or less than a predetermined set power amount.

  For example, the selection unit 103 searches the grade information storage unit 101 for grade information corresponding to a grade equal to or lower than a predetermined lower grade, and is included in the list in the grade information as a communication control server that should stop power supply. A communication control server (communication control servers corresponding to A, B, and D in FIG. 4) is selected.

  The control unit 104 controls the emergency power supply facility 2 so that power supply to the selected communication control server is stopped. Thereby, the power supply to the selected communication control server is stopped.

  Therefore, according to the second embodiment, power supply to the communication control server 3 for providing a service of a predetermined grade or less is stopped, and as a result, it is impossible to provide a high-grade service. Problems can be prevented from occurring.

[Third Embodiment]
FIG. 5 is a block diagram showing a schematic configuration of the power management device 1B used in the third embodiment.
The power management apparatus 1B stores, for each grade of service provided via the communication control server, a grade information storage unit 111 that stores a list of communication control servers corresponding to the grade and grade information including a threshold value to be applied to the grade. And a monitoring unit 112 that monitors the remaining power amount of the rechargeable battery 21, a selection unit 113 that selects a communication control server to stop power supply, and an emergency so that power supply to the selected communication control server is stopped. The control part 114 which controls the power supply equipment 2 is provided.

  For example, the at least one grade information in the grade information storage unit 111 includes a first threshold value and a second threshold value higher than the first threshold value. For example, the grade information corresponding to the low grade includes a first threshold (for example, 20%) and a second threshold (for example, 30%).

  The monitoring unit 112 operates the selection unit 113 when the remaining power amount of the rechargeable battery 21 becomes equal to or less than a predetermined set power amount.

  Similar to the selection unit 12 of the first embodiment, the selection unit 113 transmits a confirmation signal to select a communication control server to stop power supply, and receives a response signal transmitted in response to the confirmation signal. Receive.

FIG. 6 is a flowchart showing an operation flow of the selection unit 113.
The selection unit 113 transmits a confirmation signal (S1) and receives a response signal (S3), similarly to the selection unit 12 of the first embodiment.

The selection unit 113 performs processing for each communication control server 3 when all response signals are received after a certain period of time.
The selection unit 113 calculates an index value for the corresponding communication control server in the same manner as the selection unit 12 of the first embodiment (S5).

Next, the selection unit 113 searches the grade information storage unit 111 for grade information including a list including the corresponding communication control server (S6).
Next, the selection unit 113 determines whether or not the grade information includes the first threshold value and the second threshold value (S111).

  If only one threshold is included in the grade information (S111: NO), the selection unit 113 reads the threshold from the grade information (S113), and proceeds to step S7.

  On the other hand, if the grade information includes the first threshold value and the second threshold value (S111: YES), the selection unit 113 inquires the monitoring unit 112 about the remaining power amount, and is previously set lower than the set power amount. It is determined whether or not the remaining power amount is higher than the second set power amount (S115).

  If the remaining power amount is higher than the second set power amount (S115: YES), the selection unit 113 reads the first threshold value from the grade information (S117), and proceeds to step S7, while the remaining power amount is the second power amount. If it is less than the set power amount, the second threshold value is read from the grade information (S119), and the process proceeds to step S7.

Hereinafter, the threshold value read in step S113, the first threshold value read in step S117, and the second threshold value read in step S119 are simply referred to as threshold values.
The selection unit 113 determines whether or not the index value is equal to or less than a threshold value, similarly to the selection unit 12 of the first embodiment (S7).

If the index value is equal to or less than the threshold value (S7: YES), the selection unit 113 selects the corresponding communication control server 3 as the communication control server whose power supply should be stopped (S9).
If the index value is higher than the threshold value (S7: NO), or after step S9, the selection unit 113 determines whether or not the processing has been completed for all the communication control servers 3 (S11).

  If all the processes are not finished (S11: NO), the selection unit 113 returns to step S5, and if all the processes are finished (S11: YES), the operation of the flowchart is finished.

  Returning to FIG. 5, the control unit 114 controls the emergency power supply facility 2 so that the power supply to the selected communication control server is stopped. Thereby, the power supply to the selected communication control server is stopped.

FIG. 7 is a diagram illustrating a specific example of control in the third embodiment.
Here, it is assumed that the first threshold L1 and the second threshold L2 are set for the low grade, and one threshold H is set for the high grade.

  As shown on the left side of the figure, when the remaining power amount RB of the rechargeable battery 21 is equal to or less than the set power amount RBa and higher than the second set power amount RBb (RBb <RB ≦ RBa), the following control is performed. .

  If the index value R of one communication control server 1 (communication control server A) corresponding to the low grade is 0%, it is equal to or less than the first threshold L1, so the communication control server A is a communication control server that should stop power supply. Selected (O).

  If the index value R of one communication control server 1 (communication control server B) corresponding to the low grade is higher than the first threshold L1, the communication control server B is not selected as the communication control server whose power supply should be stopped ( X).

  If the index value R of one communication control server 1 (communication control server C) corresponding to the high grade is 0%, it is equal to or less than the threshold value H, so the communication control server C is selected as the communication control server whose power supply should be stopped. (○).

  If the index value R of one communication control server 1 (communication control server D) corresponding to the low grade is higher than the first threshold L1, the communication control server D is not selected as the communication control server whose power supply should be stopped ( X).

  Since the index value R of one communication control server 1 (communication control server E) corresponding to the high grade is higher than the threshold value H, the communication control server E is not selected as a communication control server whose power supply should be stopped (×).

  Since the index value R of one communication control server 1 (communication control server F) corresponding to the high grade is also higher than the threshold value H, the communication control server F is not selected as a communication control server whose power supply should be stopped (×).

On the other hand, as shown on the right side of the figure, when the remaining power amount RB is equal to or less than the second set power amount RBb (RB ≦ RBb), the following control is performed.
The high grade is the same as in the case of RBb <RB ≦ RBa.

  If the index value R of one communication control server 1 (communication control server A) corresponding to the low grade is 0%, it is equal to or less than the second threshold L2, so the communication control server A is a communication control server that should stop power supply. Selected (O).

  If the index value R of one communication control server 1 (communication control server B) corresponding to the low grade is lower than the second threshold L2, the communication control server B is selected as the communication control server whose power supply should be stopped. (○).

  If the index value R of one communication control server 1 (communication control server D) corresponding to the low grade is higher than the second threshold L2, the communication control server D is not selected as a communication control server whose power supply should be stopped ( X).

  Therefore, when RBb <RB ≦ RBa, the communication control servers A and C are selected as the communication control servers whose power supply should be stopped, whereas when RB ≦ RBb, the communication control whose power supply should be stopped. Since the communication control servers A, B, and C are selected as the servers, in the latter case, it is possible to further reduce the decrease in the remaining power amount of the rechargeable battery 21.

  In the third embodiment, the set power amount and the second set power amount are determined, but the number may be 3 or more, and finer control may be performed. For the low grade, the first threshold value and the second threshold value are set, but may be three or more. A plurality of thresholds may be set for other grades.

  Therefore, according to the third embodiment, power supply to the communication control server 3 connected to many terminals 4 that correspond to the low grade and are not used is stopped, and as a result, many terminals 4 that are in use. Can be prevented from occurring, and a problem in which a high-grade service cannot be provided can be prevented.

  Further, by providing the first threshold value and the second threshold value as in the low grade described above, when the remaining power amount is small (RB ≦ RBb), the remaining power amount is large (RBb <RB ≦ RBa). ), The reduction in the remaining power amount of the rechargeable battery 21 can be reduced.

  A computer program for causing a computer to function as the power management apparatus of each embodiment can be recorded on a computer-readable recording medium such as a semiconductor memory, a magnetic disk, an optical disk, a magneto-optical disk, a magnetic tape, and the Internet. It can be widely distributed by being transmitted through a communication network such as

DESCRIPTION OF SYMBOLS 1, 1A, 1B Power supply management apparatus 2 Emergency power supply equipment 3 Communication control server 4 Terminal 11, 102, 112 Monitoring part 12, 103, 113 Selection part 13, 104, 114 Control part 21 Rechargeable battery 101, 111 Grade information storage part

Claims (10)

A power management device that selects a communication control server to stop power supply from among a plurality of communication control servers that receive power supply from a rechargeable battery of an emergency power supply facility,
A monitoring unit for monitoring a remaining power amount of the rechargeable battery;
If the remaining power amount is equal to or less than a predetermined set power amount, a confirmation signal is transmitted via a communication control server to a terminal connected to any of the plurality of communication control servers via a communication line, When a terminal is used, a response signal transmitted from the terminal is received via the communication control server, and the number of response signals received via the communication control server is determined for each communication control server. A power management apparatus comprising: a selection unit that obtains an index value to be displayed and selects the communication control server as a communication control server to stop power supply when the index value is equal to or less than a predetermined threshold value. A power management device that selects a communication control server to stop power supply from among a plurality of communication control servers that receive power supply from a rechargeable battery of an emergency power supply facility,
A grade information storage unit for storing grade information including a list of communication control servers corresponding to the grade for each grade of service provided via the communication control server;
A monitoring unit for monitoring a remaining power amount of the rechargeable battery;
When the remaining power amount is equal to or lower than a predetermined set power amount, the grade information storage unit searches for grade information corresponding to a grade equal to or lower than a predetermined grade, and serves as a communication control server to stop the power supply. A power management apparatus comprising: a selection unit that selects a communication control server included in the list in the grade information. A power management device that selects a communication control server to stop power supply from among a plurality of communication control servers that receive power supply from a rechargeable battery of an emergency power supply facility,
A grade information storage unit for storing grade information including a list of communication control servers corresponding to the grade and a threshold value to be applied to the grade for each grade of service provided via the communication control server;
A monitoring unit for monitoring a remaining power amount of the rechargeable battery;
If the remaining power amount is equal to or less than a predetermined set power amount, a confirmation signal is transmitted via a communication control server to a terminal connected to any of the plurality of communication control servers via a communication line, When a terminal is used, a response signal transmitted from the terminal is received via the communication control server, and the number of response signals received via the communication control server is determined for each communication control server. In addition to obtaining an index value to be indicated, the grade information storage unit is searched for grade information including a list including the communication control server, a threshold value is read from the grade information, and if the index value is equal to or less than the threshold value, the power supply is performed. A power management apparatus comprising: a selection unit that selects the communication control server as a communication control server to be stopped. The at least one grade information of the grade information storage unit includes a first threshold value, and a second threshold value higher than the first threshold value,
The selection unit includes:
If the retrieved grade information includes a first threshold value and a second threshold value, it is determined whether or not the remaining power amount is higher than a predetermined second set power amount lower than the set power amount, If the remaining power amount is higher than the second set power amount, the first threshold value is read from the grade information, while if the remaining power amount is equal to or less than the second set power amount, the second value is determined from the grade information. 4. The power management apparatus according to claim 3, wherein a threshold value is read, and if the corresponding index value is equal to or less than the read threshold value, the corresponding communication control server is selected as the communication control server to stop power supply. A power supply system including an emergency power supply facility and a power management device that selects a communication control server to stop power supply from among a plurality of communication control servers that receive power supply from a rechargeable battery of the emergency power supply facility. ,
The power management device is
A monitoring unit for monitoring a remaining power amount of the rechargeable battery;
If the remaining power amount is equal to or less than a predetermined set power amount, a confirmation signal is transmitted via a communication control server to a terminal connected to any of the plurality of communication control servers via a communication line, When a terminal is used, a response signal transmitted from the terminal is received via the communication control server, and the number of response signals received via the communication control server is determined for each communication control server. A power supply system comprising: a selection unit that obtains an index value to be displayed and selects the communication control server as a communication control server to stop power supply when the index value is equal to or less than a predetermined threshold value. A power supply system including an emergency power supply facility and a power management device that selects a communication control server to stop power supply from among a plurality of communication control servers that receive power supply from a rechargeable battery of the emergency power supply facility. ,
The power management device is
A grade information storage unit for storing grade information including a list of communication control servers corresponding to the grade for each grade of service provided via the communication control server;
A monitoring unit for monitoring a remaining power amount of the rechargeable battery;
When the remaining power amount is equal to or lower than a predetermined set power amount, the grade information storage unit searches for grade information corresponding to a grade equal to or lower than a predetermined grade, and serves as a communication control server to stop the power supply. A power supply system comprising: a selection unit that selects a communication control server included in the list in the grade information. A power supply system including an emergency power supply facility and a power management device that selects a communication control server to stop power supply from among a plurality of communication control servers that receive power supply from a rechargeable battery of the emergency power supply facility. ,
The power management device is
A grade information storage unit for storing grade information including a list of communication control servers corresponding to the grade and a threshold value to be applied to the grade for each grade of service provided via the communication control server;
A monitoring unit for monitoring a remaining power amount of the rechargeable battery;
If the remaining power amount is equal to or less than a predetermined set power amount, a confirmation signal is transmitted via a communication control server to a terminal connected to any of the plurality of communication control servers via a communication line, When a terminal is used, a response signal transmitted from the terminal is received via the communication control server, and the number of response signals received via the communication control server is determined for each communication control server. In addition to obtaining an index value to be indicated, the grade information storage unit is searched for grade information including a list including the communication control server, a threshold value is read from the grade information, and if the index value is equal to or less than the threshold value, the power supply is performed. A power supply system comprising: a selection unit that selects the communication control server as a communication control server to be stopped. An operation method of a power management apparatus for selecting a communication control server to stop power supply from a plurality of communication control servers receiving power supply from a rechargeable battery of an emergency power supply facility,
The power management device monitors the remaining power amount of the rechargeable battery,
The power management device confirms, via the communication control server, a terminal connected to any one of the plurality of communication control servers via a communication line when the remaining power amount falls below a predetermined set power amount. When the terminal is used, the response signal transmitted from the terminal is received via the communication control server, and the response signal received via the communication control server for each communication control server A power management device that calculates an index value indicating a large number of the communication control server and selects the communication control server as a communication control server to stop the power supply if the index value is equal to or less than a predetermined threshold value How it works. An operation method of a power management apparatus for selecting a communication control server to stop power supply from a plurality of communication control servers receiving power supply from a rechargeable battery of an emergency power supply facility,
The power management device is
A grade information storage unit for storing grade information including a list of communication control servers corresponding to the grade for each grade of service provided via the communication control server,
In the operation method, the power management device monitors a remaining power amount of the rechargeable battery,
When the remaining power amount falls below a predetermined set power amount, the power management device searches the grade information storage unit for grade information corresponding to a grade below a predetermined grade, and stops the power supply A method for operating a power management apparatus, comprising: selecting a communication control server included in a list in the grade information as a communication control server to be operated. An operation method of a power management apparatus for selecting a communication control server to stop power supply from a plurality of communication control servers receiving power supply from a rechargeable battery of an emergency power supply facility,
The power management device is
A grade information storage unit for storing grade information including a list of communication control servers corresponding to the grade and a threshold value to be applied to the grade for each grade of service provided via the communication control server;
The operation method is as follows:
The power management device monitors the remaining power amount of the rechargeable battery,
The power management device confirms, via the communication control server, a terminal connected to any one of the plurality of communication control servers via a communication line when the remaining power amount falls below a predetermined set power amount. When the terminal is used, the response signal transmitted from the terminal is received via the communication control server, and the response signal received via the communication control server for each communication control server An index value indicating a large number of data is obtained, grade information including a list including the communication control server is retrieved from the grade information storage unit, a threshold value is read from the grade information, and the index value is equal to or less than the threshold value Then, the communication control server is selected as the communication control server that should stop the power supply.

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