JP6428386B2 - Power control apparatus, power control method, and program - Google Patents

Description

  The present invention relates to a power control apparatus, a power control method, and a program.

  An example of an apparatus that controls the power consumption of the entire system in accordance with the state of supplied power is described in Patent Document 1. In the device described in Patent Document 1, high priority power is secured by reducing power from low priority power.

JP2013-143898A

  By the way, when power limitation is performed on a system including a plurality of control targets, depending on the system configuration, the power limitation based only on priority as described in Patent Document 1 may not always be appropriate. . For example, if the power consumption of each control target is different, depending on the amount of power that can be used in the entire system, a control target with a higher priority cannot be operated, but a control target with a lower priority can be operated. is there. In such a system, when operating a low-priority control target without operating a high-priority control target, it is necessary to provide a certain exception in the priority determination. In addition, some systems include a control target that operates on the assumption that another control target is operating. In such a system, it may not be appropriate to make an exception in the priority determination. Also, depending on the system, it may be necessary to determine a power restriction target in consideration of a restriction target that cannot be power limited.

  However, in the control based only on the priority as described in Patent Document 1, there are cases where it is not always possible to appropriately respond to the various configurations and needs described above. In particular, it is a problem that the power limitation target cannot be automatically determined in consideration of the limitation target that cannot be subjected to power limitation.

  An object of this invention is to provide the power control apparatus, power control method, and program which can solve the above-mentioned subject.

In order to solve the above-described problem, a power control device according to an aspect of the present invention is a group that determines whether an assigned power restriction target group to which the own device belongs matches a power restriction target group received from a restriction instruction source device. When the matching determination unit, the power limit target group to which the own device belongs and the power limit target group received from the limit instruction source device match, the power limit is controlled among the control targets belonging to the power limit target group. A control target to be removed, and a control target determination unit that determines a control target to perform other power limitation, the control target is configured by a server device and its peripheral devices, and the control target determination unit has priority A comparison is made between the power consumption of the server device identified as corresponding to the control target specified by the order and its peripheral devices and the total supply power that can be supplied to the control target. When the power consumption of the server device and its peripheral devices exceeds the total power supply, the server device included in the control target specified by the priority order and all the peripheral devices used only by the server device are It is characterized in that it is determined as a control target to be restricted .

In the power control method according to one aspect of the present invention, the group match determination unit determines whether the power limit target group to which the device belongs belongs to the power limit target group received from the limit instruction source device. , the restricted decision unit, when the affiliation power restricted group which the own device belongs, and the power-restricted group received from the restriction instruction source device matches a control target belonging to the membership power restricted group A control target for removing the power limit from the control target configured by the server device and its peripheral devices and a control target for performing other power limits are determined, and the limit target determination unit specifies the priority order The power consumption of the server device identified as corresponding to the control target and its peripheral devices is compared with the total supply power that can be supplied to the control target. If the power consumption of the device and its peripheral devices exceeds the total power supply, the server device included in the control target specified by the priority order and all the peripheral devices used only by the server device are limited to the power limit. It is characterized by determining the control object to be performed .

The program according to one aspect of the present invention determines whether the group power determination target group to which the device belongs belongs matches the power limit target group received from the limit instruction source device by the group match determination unit. When the target power limiting target group to which the own device belongs matches the power limiting target group received from the limit instruction source device by the target determining unit, the control target belonging to the belonging power limiting target group is the server device. Of the control target composed of the control device and its peripheral devices, and a control target for removing the power limit and a control target for performing the other power limit, and the control target specified by the limit target determination unit in priority order And comparing the power consumption of the server device specified to correspond to the peripheral device and the total supply power that can be supplied to the control target, When the power consumption of the server device and its peripheral devices exceeds the total power supply, all of the server devices included in the control target specified by the priority order and the peripheral devices used only by the server devices are Causes a computer to execute a process for determining a control target to be restricted .

  According to at least one aspect described above, the power control apparatus can automatically determine a power limit target in the entire system in consideration of a limit target that cannot be power limited when performing power limit.

It is a block diagram for demonstrating schematic structure of embodiment of this invention. It is a block diagram for demonstrating an example of the control object of the power control apparatus 100 shown in FIG. It is explanatory drawing for demonstrating the structural example of the next plan blackout group memory | storage part 19 shown in FIG. It is explanatory drawing for demonstrating the structural example of the installation place planned power failure group memory | storage part 16 shown in FIG. It is explanatory drawing for demonstrating the structural example of the power supply memory | storage part 3 shown in FIG. It is explanatory drawing for demonstrating the structural example of the standby power generator supply electric power memory | storage part 8 shown in FIG. It is explanatory drawing for demonstrating the structural example of the priority order memory | storage part 12 shown in FIG. FIG. 2 is an explanatory diagram for describing a configuration example of a server / peripheral device power consumption storage unit 10 and a server configuration storage unit 14 illustrated in FIG. 1. It is explanatory drawing for demonstrating the example of a structure of the supply electric power sum total memory | storage part 18 shown in FIG. FIG. 3 is an explanatory diagram for explaining a configuration example of an operation device storage unit 5, an operation target device storage unit 17, and an instruction execution device storage unit 22 illustrated in FIG. 3 is a flowchart for explaining an operation example of the power control apparatus 100 shown in FIG. 1. It is a flowchart for demonstrating step S110 shown in FIG. It is a block diagram for demonstrating another example of the control object of the power control apparatus 100 shown in FIG. It is explanatory drawing for demonstrating the other structural example of the priority order memory | storage part 12 shown in FIG. FIG. 2 is an explanatory diagram for describing a configuration example of a server / peripheral device power consumption storage unit 10 and a server configuration storage unit 14 and a configuration example of an application configuration storage unit 25 illustrated in FIG. 1. 6 is a flowchart for explaining another example of the operation of the power control apparatus 100 shown in FIG. 1. It is a flowchart for demonstrating step S311 shown in FIG. It is a schematic block diagram which shows the basic composition of embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of an embodiment of the present invention. The power control apparatus 100 shown in FIG. 1 is an information processing apparatus including hardware such as a CPU (Central Processing Unit) (not shown), a main storage device, an auxiliary storage device, an input / output device, and a communication device. . The power control apparatus 100 provides a predetermined function by executing a predetermined program stored in an auxiliary storage device or the like using the hardware. FIG. 1 shows hardware included in the power control apparatus 100 and a program and data for performing predetermined processing using the hardware, which are divided into blocks for each function.

  The power control apparatus 100 shown in FIG. 1 includes an information analysis unit 1, an upcoming planned power outage group storage unit 19, an installation location planned outage group input interface 15, an installation location planned outage group storage unit 16, and a power outage determination unit. 20. The power control apparatus 100 further includes a supply power input interface 2, a supply power storage unit 3, a standby power supply supply power input interface 7, and a standby power supply supply power storage unit 8. The power control device 100 further includes a server / peripheral device power consumption input interface 9, a server / peripheral device power consumption storage unit 10, a priority order input interface 11, and a priority order storage unit 12. The power control apparatus 100 further includes a server configuration input interface 13 and a server configuration storage unit 14. The power control apparatus 100 further includes an application configuration input interface 24 and an application configuration storage unit 25. The power control device 100 further includes an operating device determination unit 4, a total supply power storage unit 18, an operating device storage unit 5, an operation target device storage unit 17, an instruction execution device determination unit 21, and an instruction execution device storage. Unit 22, power control execution unit 23, and power control interface 6. The power control interface 6 is connected to devices such as a plurality of servers 51, 52, and 53 that are controlled by the power control apparatus 100 via the communication line 81.

  FIG. 2 is a block diagram for explaining an example of a control target of the power control apparatus 100 shown in FIG. 2 and other drawings, the same reference numerals are used for the same components as those shown in other drawings such as FIG. In FIG. 2, the server 51 includes a CPU 511, a memory 512, an I / O (input / output) unit 513, and an I / O unit 514. The server 52 includes a CPU 521, a memory 522, an I / O unit 523, and an I / O unit 524. The server 53 includes a CPU 531, a memory 532, an I / O unit 533, and an I / O unit 534. The I / O unit 513, the I / O unit 523, and the I / O unit 533 are connected to the communication device 61. The I / O unit 514 and the I / O unit 524 are connected to the storage device 71. The I / O unit 534 is connected to the storage device 72. The power control device 100, the servers 51 to 53, the communication device 61, and the storage devices 71 to 72 are connected to the power supply line 91.

  In FIG. 1, the information analysis part 1 takes in the information of the planned power failure of the electric power company of the area where the system containing apparatuses, such as the servers 51-53 used as a control object, is installed. Then, the information analysis unit 1 stores the captured planned power outage information in the next planned power outage group storage unit 19. When a planned power outage is implemented due to a disaster or the like, a restriction instruction source such as a local power company notifies the information on the planned power outage on a WEB (web) site, an SNS (social networking service), or the like. For example, the information analysis unit 1 analyzes data described in a markup language received from a device such as a server operated by a restriction instruction source, and specifies a power restriction target group. Here, the data described in the markup language includes HTML (HyperText Markup Language) data transmitted from the WEB site, HTML data transmitted from the SNS, and the like.

  FIG. 3 shows an example of data stored in the next planned blackout group storage unit 19. As illustrated in FIG. 3, the next planned power outage group storage unit 19 stores, for example, data representing one or a plurality of next planned power outage groups specified by the information analysis unit 1 and data indicating an implementation period. In the example shown in FIG. 3, the next planned blackout group storage unit 19 includes the date and time A1 and A2 and the date and time B1 and B2 indicating the implementation period in the identification information of the planned blackout group such as group A, group B, group C,. , Date sets C1 to C2,...

  The installation site planned power outage group input interface 15 provides an input interface for the user to input a planned power outage group in the area where the system is installed. The installation location planned power outage group input interface 15 displays an input screen on the display unit using, for example, a display unit and an input unit (not shown) included in the power control apparatus 100, and responds to a user input operation on the input screen. Identify the site planned power outage group. Alternatively, the installation site planned power outage group input interface 15 displays the input screen on the display unit of the terminal by, for example, transmitting / receiving predetermined data to / from the terminal used by the user, and the user corresponding to the input screen It is also possible to specify the installation site planned power outage group according to the input operation.

  FIG. 4 shows an example of data stored in the installation location planned power outage group storage unit 16. As shown in FIG. 4, the installation location planned power outage group storage unit 16 stores a planned outage group in a region where the system specified by the installation location planned outage group input interface 15 according to the user's input operation is installed. . In the example shown in FIG. 4, the installation location planned power outage group storage unit 16 stores the identification information of group A as the planned power outage group in the area where the system is installed.

  The power outage execution determination unit 20 includes a data indicating the planned power outage group in the area where the system stored in the installation place planned power outage group storage unit 16 is installed, and the next planned outage group stored in the next planned outage group storage unit 19. Based on the data indicating, whether or not a power outage is being performed for the installation site planned power outage group is determined. The power failure execution determination unit 20 stores data indicating that the supply power is 0 (zero) in the supply power storage unit 3 when a power failure occurs. Or the power failure execution judgment part 20 memorize | stores the data which show the rated supply power of a system in the power supply memory | storage part 3, when the power failure is not performed. In addition, the power failure execution judgment part 20 may memorize | store the data which show that the planned power failure is not performed in the power supply memory | storage part 3, when the power failure is not performed.

  The supply power input interface 2 provides an interface for a user to manually input supply power. For example, when a power usage restriction instruction is issued, the user manually inputs supply power from the supply power input interface 2. When the supply power is manually input, the supply power input interface 2 stores the supply power in the supply power storage unit 3.

  FIG. 5 shows an example of data stored in the supply power storage unit 3. As shown in FIG. 5, the supplied power storage unit 3 stores the current supplied power. In the example illustrated in FIG. 5, the supplied power storage unit 3 stores data indicating that the supplied power is 0 W in accordance with an instruction from the power failure execution determination unit 20.

  The standby power supply power input interface 7 provides an interface for the user to input the power supplied to the standby power generator. The standby power generator supply power input interface 7 stores data representing the input standby power generator supply power in the standby power supply power storage unit 8. The standby power generator supply power storage unit 8 stores data representing the supply power of the standby power generator in accordance with instructions from the standby power supply power input interface 7. FIG. 6 shows an example of data stored in the standby power generator supply power storage unit 8. In the example illustrated in FIG. 6, the standby power generator supply power storage unit 8 stores data indicating that the standby power generator supply power is 650 W in accordance with an instruction from the standby power supply power input interface 7.

  The priority order input interface 11 provides an input interface for a user to input the priority order of servers to be operated in the system and data indicating whether the operation of each server is essential or the priority order is variable. The priority order input interface 11 stores in the priority order storage unit 12 data indicating whether the priority order and operation of the input server are essential or whether the priority order is variable. In the present embodiment, the power control apparatus 100 determines that all servers and peripheral devices in the system cannot be operated due to power shortage due to a lack of power, as determined by the operation device determination unit 4. Stop operation. On the other hand, when the server that is indispensable for operation and the peripheral device used by the server can be operated, the operation device determination unit 4 determines the server to be operated as follows. That is, the operating device determination unit 4 first determines that an essential server and a peripheral device used by the server are to be operated. Next, the operating device determination unit 4 uses the power remaining when the server that is indispensable to operate and the peripheral device used by the server is operated by the server having the variable priority and the server according to the priority. Sequentially assign to peripheral devices At that time, the operating device determination unit 4 can determine the server to be operated regardless of the priority order according to the remaining power and the power consumption of each server and the peripheral device used by the server. In other words, even when power is insufficient to operate a server having a higher priority and a peripheral device used by the server, a server having a lower priority and a peripheral device used by the server can be operated. The determination unit 4 makes the following determination. That is, the operating device determination unit 4 determines that the server having the higher priority and the peripheral device used by the server are not operated, and the server having the lower priority and the peripheral device used by the server are operated.

  In the present embodiment, no priority order is set for a server that must be operated. For example, when there are a plurality of servers that are required to operate, all the servers that are required to operate are operated when all of the servers that are required to operate and the peripheral devices used by the servers can be operated. On the other hand, when it is not possible to operate all of the plurality of servers indispensable for operation and the peripheral devices used by the respective servers, all of the plurality of servers indispensable for operation are stopped. That is, in other words, the priorities of servers that are essential to operation are all the same. Therefore, in the present embodiment, the priority order is set only for servers with variable priority orders.

  The priority storage unit 12 stores data indicating whether or not the priority of the server to be operated in the system is essential and whether the priority is variable according to the instruction of the priority input interface 11. FIG. 7 shows an example of data stored in the priority order storage unit 12. The priority order storage unit 12 shown in FIG. 7 sets the type indicating whether the operation of the server to be operated in the system is essential or the priority order is variable and the server priority order to the server name which is identification information of each server. Store in association with each other. The type indicating whether the operation is essential or the priority is variable represents the type of priority, that is, the type. If the type is mandatory, the server must be running regardless of the priority value. Therefore, as described above, when the type is essential, the priority value is not set. On the other hand, the variable type means that the priority value can be varied. Further, the priority is highest when the priority is 1, and the priority becomes lower as the value becomes larger as 2, 3,. In the example shown in FIG. 7, the priority order storage unit 12 stores data related to the servers 51 to 53 shown in FIGS. 1 and 2 in accordance with instructions from the priority order input interface 11. In this case, the priority storage unit 12 stores a type indicating that the operation of the server is essential in association with the identification information of the server 51. In addition, the priority storage unit 12 stores a type indicating that the operation of the server is not essential and the priority is variable, and data indicating priority 1 in association with the identification information of the server 52. Yes. Further, the priority storage unit 12 stores data indicating the priority 2 and a type indicating that the operation of the server is not essential and the priority is variable in association with the identification information of the server 53. Yes. As for the priority order, the same priority order can be set for a plurality of servers. For example, the priority order of the server 52 can be set to 1, and the priority order of the server 53 can be set to 1. The type can be, for example, 1-bit flag data.

  The server / peripheral device power consumption input interface 9 provides an interface for the user to input power consumption of each server and peripheral device in the system. Further, the server / peripheral device power consumption storage unit 10 stores the power consumption of each server and peripheral device in the system in accordance with an instruction from the server / peripheral device power consumption input interface 9. The server configuration input interface 13 provides an input interface for the user to input peripheral devices necessary for operating each server in the system. The server configuration storage unit 14 stores the server configuration in accordance with instructions from the server configuration input interface 13. Here, the server configuration is information representing a correspondence relationship between each server and a peripheral device required when each server operates. Alternatively, the server configuration may be information representing a correspondence relationship between each device such as a server and a peripheral device and another device used when each device operates.

  FIG. 8 shows an example of data stored in the server / peripheral device power consumption storage unit 10 and the server configuration storage unit 14. FIG. 8 shows a case where the server / peripheral device power consumption storage unit 10 and the server configuration storage unit 14 are combined into a single table. In FIG. 8, the configuration surrounded by a chain line is the server / peripheral device power consumption storage unit 10, and the configuration surrounded by a broken line is the server configuration storage unit 14. Further, FIG. 8 corresponds to the case where the server and the peripheral device to be controlled by the power control apparatus 100 have the configuration shown in FIG.

  The server / peripheral device power consumption storage unit 10 shown in FIG. 8 uses the power consumption of each of the servers 51 to 53 and the communication device 61 and the storage devices 71 to 72 as peripheral devices in the system. It is stored in association with identification information (name). Further, the server configuration storage unit 14 shown in FIG. 8 includes the identification information of other devices required when the servers 51 to 53 in the system and the communication device 61 and the storage devices 71 to 72 as peripheral devices operate. Are stored in association with the identification information (name) of each server or each peripheral device. In the example illustrated in FIG. 8, the server / peripheral device power consumption storage unit 10 and the server configuration storage unit 14 are configured such that, for example, the power consumption of the server 51 is 100 W, and the necessary devices used when the server 51 operates are communicating. The device 61 and the storage device 71 are stored.

  Next, the operating device determination unit 4 determines a device to be operated in the system when the supplied power changes. At that time, the operating device determination unit 4 reads the supply power from the supply power storage unit 3, reads the standby power supply device supply power from the standby power supply device power storage unit 8, and stores the total value in the supply power sum storage unit 18. save. In addition, the operating device determination unit 4 uses the supplied power total storage unit 18 as a storage unit that stores the remaining power when servers operating in the determination process are sequentially determined. Here, the supplied power total storage unit 18 stores the total supplied power. FIG. 9 shows an example of data stored in the total supply power storage unit 18. 9A, the operating device determination unit 4 stores the supply power stored in the supply power storage unit 3 illustrated in FIG. 5 and the standby power generation device supply power storage unit 8 illustrated in FIG. A case is shown in which the total value of the supplied power of the standby power generator is stored in the supplied power total storage unit 18. FIG. 9B shows that the operating device determination unit 4 uses the stored values of the supplied power sum storage unit 18 shown in FIG. A case where a value obtained by subtracting the total value of power consumption is stored in the supply power total storage unit 18 is shown.

  In addition, the operating device determination unit 4 may store, in the operating device storage unit 5, data representing the operating state of each server and each peripheral device in the system based on, for example, predetermined data received from each server in the system. it can. In the present embodiment, the data indicating the operating state of each device stored in the operating device storage unit 5 is updated when the power control execution unit 23 controls each device. The operating device storage unit 5 stores devices currently operating in the system.

  In addition, the operating device determination unit 4 stores the result of the processing for determining the device to be operated in the system when the supplied power changes in the operation target device storage unit 17. The operation target device storage unit 17 stores an operation to be performed on each device determined by the operation device determination unit 4.

  FIG. 10 shows an example of data stored in the operation device storage unit 5 and the operation target device storage unit 17. FIG. 10 shows a case where the operation device storage unit 5, the operation target device storage unit 17, and the instruction execution device storage unit 22 are combined into a single table. In FIG. 10, the configuration surrounded by the broken line is the operating device storage unit 5, the configuration surrounded by the one-dot chain line is the operation target device storage unit 17, and the configuration surrounded by the two-dot chain line is the instruction execution device storage unit 22. . FIG. 10 corresponds to the case where the server and peripheral devices to be controlled by the power control apparatus 100 have the configuration shown in FIG.

  The operating device storage unit 5 illustrated in FIG. 10 indicates the operating status of each of the servers 51 to 53 in the system, the communication device 61 and the storage devices 71 to 72 that are peripheral devices, and identification information (names) of each server or each peripheral device. ) And stored in association with each other. Further, the operation target device storage unit 17 illustrated in FIG. 10 stores data indicating operations to be performed on the servers 51 to 53 in the system and the communication devices 61 and the storage devices 71 to 72 as peripheral devices. Alternatively, the information is stored in association with identification information (name) of each peripheral device. Here, the data indicating the operating state and the data indicating the operation to be performed can be, for example, data indicating on (operation) or off (stop). In the example illustrated in FIG. 10, the operation device storage unit 5 and the operation target device storage unit 17 store that the operation state of the server 51 is on and the operation to be performed on the server 51 is on. . In the example illustrated in FIG. 10, the operation device storage unit 5 and the operation target device storage unit 17 store that the operation state of the server 52 is on and the operation to be performed on the server 52 is off. ing.

  The instruction execution device determination unit 21 is based on the state of the currently operating device stored in the operating device storage unit 5 and the operation executed on each device stored in the operation target device storage unit 17. Thus, a device that performs power supply control is determined. The instruction execution device determination unit 21 stores the determination result of the device that performs power control in the instruction execution device storage unit 22. The instruction execution device storage unit 22 stores a device that performs power supply control.

  For example, when the operation device storage unit 5 and the operation target device storage unit 17 store the data illustrated in FIG. 10, the instruction execution device determination unit 21 determines a device that performs power supply control as follows. That is, the instruction execution device determination unit 21 compares the operation state stored in the operation device storage unit 5 with the operation to be executed stored in the operation target device storage unit 17 for each server and each peripheral device. . Next, when the operating state and the operation to be executed are the same, the instruction execution device determination unit 21 determines that the power control of the device is not performed. When the operating state and the operation to be executed are different, the instruction execution device determination unit 21 performs the power control of the device. The operation to be executed. For example, the instruction execution device determination unit 21 determines that the power of the device is not controlled when both the operating state and the operation to be executed are on or both are off. In addition, when the operation state is on and the operation to be performed is off, the instruction execution device determination unit 21 turns off the power control of the device. In addition, when the operation state is off and the operation to be performed is on, the instruction execution device determination unit 21 turns on the power control of the device. The instruction execution device determination unit 21 stores the determination result in the instruction execution device storage unit 22.

  The instruction execution device storage unit 22 shown in FIG. 10 identifies the contents of power control of the servers 51 to 53 and the communication devices 61 and the storage devices 71 to 72 as peripheral devices in the system. It is stored in association with information (name). The contents of the power control can be indicated by data representing on (operation) or off (stop), for example. For example, in the example illustrated in FIG. 10, the instruction execution device determination unit 21 stores that there is no power control content of the server 51. In the example illustrated in FIG. 10, the instruction execution device determination unit 21 stores that the content of the power control of the server 52 is OFF. However, the instruction execution device storage unit 22 is not limited to storing the power control content of each device as a list. For example, the instruction execution device storage unit 22 includes data specifying a device that performs power control and data indicating the power control content. It may be included.

  The power control execution unit 23 performs power control based on the stored contents of the instruction execution device storage unit 22. The power control interface 6 is an interface for instructing power to the server and peripheral devices.

  The application configuration input interface 24 provides an interface for the user to input server information necessary for each application (application program or application software) executed in the system to operate. The application configuration storage unit 25 stores the application configuration input by the application configuration input interface 24. The application configuration input interface 24 and the application configuration storage unit 25 will be described later.

  Next, an operation example of the power control apparatus 100 illustrated in FIG. 1 will be described with reference to the flowcharts illustrated in FIGS. 11 and 12. First, the user inputs data necessary for setting. First, the user inputs the amount of power supplied to the standby power generation device that operates at the time of the planned power failure from the standby power generation device supply power input interface 7 (step S101). When input is made, the standby power supply power supply input interface 7 stores the standby power supply power supply storage unit 8 in the standby power supply power storage unit 8 (step S101). If no input is made, the power supplied to the standby power generator is set to 0 and stored in the standby power generator supplied power storage unit 8 (step S101).

  Second, the user inputs the power consumption of each server / peripheral device in the system from the server / peripheral device power consumption input interface 9 (step S102). When input is made, the server / peripheral device power consumption input interface 9 stores the power consumption of the server / peripheral device in the server / peripheral device power consumption storage unit 10 (step S102).

  Third, the user inputs the priority order of servers to be operated in the system from the priority order input interface 11 (step S103). When input is made, the priority order input interface 11 stores the priority order in the priority order storage unit 12 (step S103).

  Fourth, the user inputs the planned power outage group in the area where the system is installed from the installation location planned power outage group input interface 15 (step S104). The installation location planned power outage group input interface 15 stores the input in the installation location planned power outage group storage unit 16 (step S104).

  Finally, the user inputs information on peripheral devices necessary for each server in the system to operate from the server configuration input interface 13 (step S105). The server configuration input interface 13 stores the input in the server configuration storage unit 14 (step S105).

  When a planned power outage is implemented due to a disaster, the local power company notifies the planned power outage on the WEB site or SNS. The information analysis unit 1 identifies the planned power outage group of the planned power outage implemented from the notified information, and stores it in the next planned power outage group storage unit 19 (step S106).

  The power failure execution determination unit 20 reads the next planned power failure group from the next planned power failure group storage unit 19 and reads the planned power failure group in the area where the system is installed from the installation location planned power failure group storage unit 16 (step S107). The power failure execution determination unit 20 stores 0 in the supplied power storage unit 3 when the read planned power failure group is the same (step S107).

  When a power usage restriction instruction is issued, the user manually inputs supply power from the supply power input interface 2 (step S108). When input, the supplied power input interface 2 stores the supplied power in the supplied power storage unit 3 (step S108).

  Next, the operating device determination unit 4 reads the supply power from the supply power storage unit 3 and the standby power generation device supply power from the standby power supply supply power storage unit 8 and stores the total value in the supply power total storage unit 18 ( Step S109).

  Then, the operating device determination unit 4 determines an operating device in the system within a range not exceeding the total value of the supplied power (step S110). Here, with reference to FIG. 12, the operating device determination process by the operating device determination part 4 of step S110 of FIG. 11 is demonstrated.

  First, the operating device determination unit 4 stores the setting of an execution operation for turning off all the devices in the operating target device storage unit 17 (step S201). Next, the operating device determination unit 4 reads a server whose type is “essential” from the priority order storage unit 12 (step S202). Next, the operating device determination unit 4 reads out peripheral devices necessary for these servers to operate from the server configuration storage unit 14 (step S202). Next, the operating device determination unit 4 reads the power consumption of those servers and the necessary power consumption of the peripheral devices from the server / peripheral device power consumption storage unit 10 (step S202). Next, the operating device determination unit 4 sums the power consumption of the server for which the read type is essential and the power consumption of the peripheral devices necessary for the server to operate (step S202).

  Next, the operating device determination unit 4 compares the total power consumption value (total power consumption) obtained in step S202 with the total supply power read from the total supply power storage unit 18 (step S203). The operating device determination unit 4 ends the process when the total power consumption exceeds the total supply power read from the total supply power storage unit (“YES” in step S204). When the operating device determination unit 4 ends the process, the process flow proceeds to step S111 next to step S110 in FIG.

  On the other hand, when the total power consumption is equal to or less than the total supply power read from the supply power total storage unit 18, the operating device determination unit 4 turns on the server whose type is essential and the necessary peripheral devices. Is stored in the operation target device storage unit 17 (“NO” in step S204 to step S205). Next, the operating device determination unit 4 subtracts the sum of the power consumption of the server for which the priority type is essential from the sum of the supplied power and the power consumption of the peripheral devices necessary for the server to operate. The result is stored in the total supply power storage unit 18 (step S206).

  Next, the operating device determination unit 4 has determined all the servers, or the supply power total stored in the supply power total storage unit 18 is an undetermined server and the power consumption of peripheral devices necessary for the server. It is determined whether the total value is below the minimum value (step S207). Here, when the total supply power is lower than the minimum value of the total power consumption of the undetermined server and the peripheral devices necessary for the server, there is no server that can be additionally operated in the total supply power. Means that. The operating device determination unit 4 ends the process when all the servers have been determined, or when the total power supply does not exceed the minimum total power consumption of any server that has not been determined and the necessary peripheral devices ( “YES” in step S207).

  Next, the operating device determination unit 4 reads a server with the next highest priority from the priority order storage unit 12 (step S208). Next, the operating device determination unit 4 reads out peripheral devices necessary for the server to operate from the server configuration storage unit 14 (step S208). Next, the operating device determination unit 4 reads the power consumption of the server and the power consumption of the necessary peripheral devices from the server / peripheral device power consumption storage unit 10 and sums them up (step S208). However, in the total processing, peripheral devices that have already been determined to be turned on are excluded from the total processing target. For example, when the server uses a peripheral device required by a server whose type is essential, the power consumption of the peripheral device is not included in the total value.

  Next, the operating device determination unit 4 compares the total power consumption value (total power consumption) obtained in step S208 with the total supply power read from the total supply power storage unit 18 (step S209). The operating device determination unit 4 returns to step S207 when the total power consumption exceeds the total supply power read from the total supply power storage unit (“YES” in step S210). On the other hand, when the total power consumption is less than or equal to the total of the supplied power read from the supplied power total storage unit, the operating device determination unit 4 determines that the server and necessary peripheral devices are turned on, and the operating target device storage unit 17 ("NO" in step S210 to step S211). Next, the operating device determination unit 4 subtracts the sum of the power consumption of the server and the power consumption of peripheral devices necessary for the server to operate from the sum of the power supply, and the subtraction result is the power supply sum storage unit 18. (Step S212). After step S212, the operating device determination unit 4 returns to step S207.

  The operating device determination unit 4 terminates the determination processing when the processing of steps S207 to S212 in FIG. 12 is performed, when all servers are determined whether the total power supply is lower than the power consumption of which servers and peripheral devices in the system. (“YES” in step S207).

  For example, the supply power storage unit 3, the standby power generator supply power storage unit 8, the priority order storage unit 12, the server / peripheral device power consumption storage unit 10 and the server configuration storage unit 14, and the supply power total storage unit 18 are shown in FIG. 6, 7, 8, and 9 </ b> A, the operation device determination unit 4 determines the operation target device storage unit 17 as illustrated in FIG. 10. Save the result. In this case, the operating device determination unit 4 first compares the total supply power (650 W) with the total power consumption (450 W) of the server 51 whose type is essential and its peripheral devices (steps S201 to S203). Then, the operation device determination unit 4 stores the setting for turning on the server 51, the communication device 61, and the storage device 71 in the operation target device storage unit 17 (step S205). Next, the operating device determination unit 4 subtracts the total power consumption value (450 W) of the server 51, the communication device 61, and the storage device 71 from the total power supply (650 W) (200 W) in the power supply total storage unit 18. Save (step S205, FIG. 9B).

  Next, the operating device determination unit 4 compares the total power supply (200 W) with the total power consumption (300 W) of the server 52 having the next highest priority (in this case, priority 1) and its peripheral devices. (Step S210). In this case, the server 52 uses the communication device 61 and the storage device 71, but the power consumption of these peripheral devices has already been taken into account in the determination of the server 51 and is not included in the total power consumption. However, in this case, since the total power consumption (300 W) exceeds the total supply power (200 W), the server 52 is not targeted for operation. Next, the operating device determination unit 4 determines the server 53 with the next priority. In other words, the operating device determination unit 4 compares the total power supply (200 W) with the total power consumption (200 W) of the server 53 and its peripheral devices (from step S210 “YES” to S207 to S209). Then, the operation device determination unit 4 stores the setting for turning on the server 53 and the storage device 72 in the operation target device storage unit 17 (step S211). Next, the operating device determination unit 4 stores the result (0 W) obtained by subtracting the total power consumption value (200 W) of the server 53 and the storage device 72 from the total supply power (200 W) in the total supply power storage unit 18 (Step S1). S212). Next, the operating device determination unit 4 ends the process (“YES” in step S207). In this case, the operation target device storage unit 17 stores a setting that turns off only the execution operation of the server 52 as illustrated in FIG. 10.

  When the operating device determination unit 4 finishes the process of step S110 in FIG. 11, the instruction execution device determination unit 21 performs the following process. That is, the instruction execution device determination unit 21 refers to the operation device storage unit 5 and the operation target device storage unit 17 to identify the operation state to be instructed to each control target, that is, the content of power control, and stores the instruction execution device storage. The data is stored in the unit 22 (step S111). In this case, the instruction execution device determination unit 21 performs the following process for all devices. That is, the instruction execution device determination unit 21 compares the operation state of each device read from the operation device storage unit 5 with the operation to be executed read from the operation target device storage unit 17. Then, if they are different, the instruction execution device determination unit 21 stores the instructed operating state read from the operation target device storage unit 17 in association with the device in the instruction execution device storage unit 22.

  Next, the power supply control execution unit 23 gives the read instruction to the apparatus read from the instruction execution device storage unit 22 via the power supply control interface 6 and stores the instructed operating state in the operation device storage unit 5. (Step S112).

  According to the present embodiment, the entire system does not have to be stopped even when the supplied power is reduced. In addition, according to the present embodiment, it is possible to preferentially operate only the necessary parts of the system even with the power supply that has been reduced in accordance with the setting, priority, and configuration data regarding whether or not the operation set in advance is essential. it can.

  Next, another operation example (hereinafter referred to as a second operation example) of the power control apparatus 100 shown in FIG. 1 will be described with reference to FIGS. In the above operation example (hereinafter referred to as the first operation example), the priority order and type for each server are stored in the priority order storage unit 12 as shown in FIG. In the first operation example, the operation state of the control target is controlled based on the setting of the type and priority for each server. On the other hand, in the second operation example, a type and a priority order indicating whether or not each application executed on a plurality of servers is essential are set. Then, the server and the peripheral device to be operated are determined based on the power consumption of the server necessary for each application to execute and the peripheral device used by the server and the application type.

  FIG. 13 is a block diagram for explaining an example of a control target in the second operation example of the power control apparatus 100 shown in FIG. 1. FIG. 14 is an explanatory diagram for describing a configuration example in the second operation example of the priority order storage unit 12 illustrated in FIG. 1. FIG. 15 is an explanatory diagram for explaining a configuration example of the server / peripheral device power consumption storage unit 10 and the server configuration storage unit 14 and a configuration example of the application configuration storage unit 25 shown in FIG. 1 in the second operation example. is there. FIG. 16 is a flowchart for explaining a second operation example of the power control apparatus 100 shown in FIG. FIG. 17 is a flowchart for explaining step S311 shown in FIG.

  The configuration example of the control target illustrated in FIG. 13 is different from the configuration example of the control target described with reference to FIG. That is, in the configuration example of the control target illustrated in FIG. 13, the server 51 newly includes an application 515 and an application 516. The server 52 is newly provided with an application 525 and an application 526. The server 53 newly includes an application 535 and an application 536. The application 515 and the application 516 are programs executed by the server 51. The application 525 and the application 526 are programs executed by the server 52. The application 535 and the application 536 are programs executed by the server 53.

  Next, a configuration example of data stored in the priority order storage unit 12 of FIG. 1 in the second operation example will be described with reference to FIG. The priority storage unit 12 shown in FIG. 14 identifies the type indicating whether the execution of an application executed on any server in the system is essential or the priority is variable, and the priority of the application. The information is stored in association with the information. The type indicating whether the execution of the application is essential or the priority is variable represents the type of priority, that is, the type. If the type is mandatory, the app must run regardless of the priority value. Therefore, if the type is mandatory, the priority value is not set. On the other hand, the variable type means that the priority value can be varied. In this case, the priority is highest when the priority is 1, and the priority becomes lower as the values of 2, 3,. In the example illustrated in FIG. 14, the priority storage unit 12 stores data related to the application executed by the servers 51 to 53 illustrated in FIG. 2 in accordance with the instruction of the priority input interface 11. In this case, the priority storage unit 12 stores a type indicating that the execution of the application is essential in association with the identification information of the application 515. In addition, the priority storage unit 12 associates the identification information of the application 516 and the application 525 with a type indicating that the execution of the application is not essential and the priority is variable, and data indicating priority 1 I remember it. In addition, the priority storage unit 12 associates the identification information of the application 526, the application 535, and the application 536 with a type indicating that the execution of the application is not essential and the priority is variable, and priority 2 is set. Stores data to represent.

  Next, a configuration example of data stored in the application configuration storage unit 25 in FIG. 1 in the second operation example will be described with reference to FIG. FIG. 15 shows a case where the application configuration storage unit 25, the server / peripheral device power consumption storage unit 10, and the server configuration storage unit 14 are combined into a single table. In FIG. 15, the configuration surrounded by the one-dot chain line is the server / peripheral device power consumption storage unit 10, the configuration surrounded by the broken line is the server configuration storage unit 14, and the configuration surrounded by the two-dot chain line is the application configuration storage unit 25. It is. FIG. 15 corresponds to the case where the server and the peripheral device to be controlled by the power control apparatus 100 have the configuration shown in FIG.

  The application configuration storage unit 25 illustrated in FIG. 15 stores the servers 51, 52, and 53 that execute the applications 515 and 516, 515 and 516, and 515 and 516 in association with the identification information of each application. That is, the application configuration storage unit 25 stores information indicating a server necessary for executing each application. Note that the server / peripheral device power consumption storage unit 10 and the server configuration storage unit 14 have the same configurations as those shown in FIG.

  Next, a second operation example of the power control apparatus 100 shown in FIG. 1 will be described with reference to the flowcharts shown in FIGS. 16 and 17. First, the user inputs data necessary for setting. First, the user inputs the power supply amount of the standby power generator that operates at the time of the planned power failure from the standby power generator supply power input interface 7 (step S301). When input is made, the standby power supply power supply input interface 7 stores the standby power supply power supply storage unit 8 in the standby power supply power storage unit 8 (step S301). When no input is made, the power supplied to the standby power generator is set to 0 and stored in the standby power generator supplied power storage unit 8 (step S301).

  Second, the user inputs the power consumption of each server / peripheral device in the system from the server / peripheral device power consumption input interface 9 (step S302). When the input is made, the server / peripheral device power consumption input interface 9 stores the power consumption of the server / peripheral device in the server / peripheral device power consumption storage unit 10 (step S302).

  Third, the user inputs the priority order of applications to be executed by the server in the system from the priority order input interface 11 (step S303). When input is made, the priority order input interface 11 stores the priority order in the priority order storage unit 12 as shown in FIG. 14 (step S303).

  Fourth, the user inputs the planned power outage group in the area where the system is installed from the installation location planned power outage group input interface 15 (step S304). The installation site planned power outage group input interface 15 stores the input in the installation site planned power outage group storage unit 16 (step S304).

  Fifth, the user inputs information about peripheral devices necessary for each server in the system to operate from the server configuration input interface 13 (step S305). When input, the server configuration input interface 13 stores the server configuration in the server configuration storage unit 14 (step S305).

  Finally, the user inputs server information necessary for each application in the system to operate from the application configuration input interface 24 (step S306). When input is made, the application configuration input interface 24 stores the application configuration in the application configuration storage unit 25 (step S306).

  When a planned power outage is implemented due to a disaster, the local power company notifies the planned power outage on the WEB site or SNS. The information analysis unit 1 identifies the planned power outage group of the planned power outage implemented from the notified information, and stores it in the next planned power outage group storage unit 19 (step S307).

  The power failure execution determination unit 20 reads the next planned power failure group from the next planned power failure group storage unit 19 and reads the planned power failure group in the area where the system is installed from the installation location planned power failure group storage unit 16 (step S308). The power failure execution determination unit 20 stores 0 in the supply power storage unit 3 when the read planned power failure group is the same (step S308).

  When a power usage restriction command is issued, the user manually inputs supply power from the supply power input interface 2 (step S309). When input, the supplied power input interface 2 stores the supplied power in the supplied power storage unit 3 (step S309).

  Next, the operating device determination unit 4 reads the supply power from the supply power storage unit 3 and the standby power generation device supply power from the standby power supply supply power storage unit 8 and stores the total value in the supply power total storage unit 18 ( Step S310).

  Then, the operating device determination unit 4 determines an operating device in the system within a range not exceeding the total value of the supplied power (step S311). Here, with reference to FIG. 17, the operating device determination process by the operating device determination part 4 of step S311 of FIG. 16 is demonstrated.

  First, the operating device determination unit 4 stores settings for turning off all devices in the operating target device storage unit 17 (step S401). Next, the operating device determination unit 4 reads an application whose type is “essential” from the priority order storage unit 12 (step S402). Next, the operating device determination unit 4 reads a server on which the application operates from the application configuration storage unit 25 (step S402). Next, the operating device determination unit 4 reads out peripheral devices necessary for these servers to operate from the server configuration storage unit 14 (step S402). Next, the operating device determination unit 4 reads the power consumption of those servers and the necessary power consumption of the peripheral device from the server / peripheral device power consumption storage unit 10 (step S402). Next, the operating device determination unit 4 sums the read power consumption of the server and the power consumption of the peripheral devices necessary for the server to operate (step S402).

  Next, the operating device determination unit 4 compares the total power consumption value (total power consumption) obtained in step S402 with the total supply power read from the total supply power storage unit 18 (step S403). The operating device determination unit 4 ends the process when the total power consumption exceeds the total supply power read from the total supply power storage unit (“YES” in step S404). When the operating device determination unit 4 ends the process, the process flow proceeds to step S312 next to step S311 in FIG.

  On the other hand, if the total power consumption is less than or equal to the total power supplied from the total supply power storage unit, the operating device determination unit 4 determines the server on which the application whose type is essential and the necessary peripheral devices are It is stored in the operation target device storage unit 17 to be turned on (“NO” in step S404 to step S405). Next, the operating device determination unit 4 calculates the sum of the power consumption of the server that operates the application for which the priority type is essential and the power consumption of the peripheral devices necessary for the server to operate. And the result of the subtraction is stored in the total supply power storage unit 18 (step S406).

  Next, the operating device determination unit 4 determines whether all applications have been determined, or the supply power total stored in the supply power total storage unit 18 is a server on which an undetermined application operates and the peripherals necessary for the server. It is determined whether or not the total power consumption of the apparatus is below the minimum value (step S407). The operating device determination unit 4 performs processing when all the apps have been determined, or when the total power consumption does not exceed the minimum total value of the power consumption of any server and the necessary peripheral devices that operate the undecided apps. Is ended (“YES” in step S407).

  Next, the operating device determination unit 4 reads out the application with the next highest priority from the priority storage unit 12 (step S408). Next, the operating device determination unit 4 reads out peripheral devices necessary for the server on which the application operates to operate from the server configuration storage unit 14 (step S408). Next, the operating device determination unit 4 reads the power consumption of the server and the power consumption of the necessary peripheral devices from the server / peripheral device power consumption storage unit 10 and sums them up (step S408). However, in the total processing, peripheral devices that have already been determined to be turned on are excluded from the total processing target. For example, when the server uses a peripheral device required by a server on which an application whose type is essential, the power consumption of the peripheral device is not included in the total value.

  Next, the operating device determination unit 4 compares the total power consumption value (total power consumption) obtained in step S208 with the total supply power read from the total supply power storage unit 18 (step S409). The operating device determination unit 4 returns to step S407 when the total power consumption exceeds the total supply power read from the supply power total storage unit ("YES" in step S409). On the other hand, when the total power consumption is less than or equal to the total of the supplied power read from the supplied power total storage unit, the operating device determination unit 4 determines that the server and necessary peripheral devices are turned on, and the operating target device storage unit 17 ("NO" in step S410 to step S411). Next, the operating device determination unit 4 subtracts the sum of the power consumption of the server and the power consumption of peripheral devices necessary for the server to operate from the sum of the power supply, and the subtraction result is the power supply sum storage unit 18. (Step S412). After step S412, the operating device determination unit 4 returns to step S407.

  The operation device determination unit 4 finishes the determination processing when the processing of steps S <b> 407 to S <b> 412 in FIG. 12 is determined when all the applications are determined as to which server and peripheral devices in the system have less total power consumption. (“YES” in step S407).

  When the operating device determination unit 4 finishes the process of step S311 in FIG. 16, the instruction execution device determination unit 21 performs the following process. That is, the instruction execution device determination unit 21 refers to the operation device storage unit 5 and the operation target device storage unit 17 to identify the operation state to be instructed to each control target, that is, the content of power control, and stores the instruction execution device storage. The data is stored in the unit 22 (step S312). In this case, the instruction execution device determination unit 21 performs the following process for all devices. That is, the instruction execution device determination unit 21 compares the operation state of each device read from the operation device storage unit 5 with the operation to be executed read from the operation target device storage unit 17. Then, if they are different, the instruction execution device determination unit 21 stores the instructed operating state read from the operation target device storage unit 17 in association with the device in the instruction execution device storage unit 22.

  Next, the power supply control execution unit 23 gives the read instruction to the apparatus read from the instruction execution device storage unit 22 via the power supply control interface 6 and stores the instructed operating state in the operation device storage unit 5. (Step S313).

  According to the present embodiment, the entire system does not have to be stopped even when the supplied power is reduced. In addition, according to the present embodiment, it is possible to preferentially operate only the necessary parts of the system even with the power supply that has been reduced in accordance with the setting, priority, and configuration data regarding whether or not the operation set in advance is essential. it can. Even when the priority is changed from the server to the application as in the second operation example, when the server is linked, the system can be operated by setting the priority even in an environment where the power consumption is reduced.

  Next, the basic configuration of the embodiment of the present invention will be described with reference to FIG. FIG. 18 is a schematic block diagram showing the basic configuration of the power control apparatus 100 according to the present invention. In the above, the configuration illustrated in FIG. 1 has been described as an embodiment of the power control apparatus 100, but the basic configuration of the power control apparatus 100 is as illustrated in FIG. That is, the power control apparatus 100 has the group match determination unit 201 and the restriction target determination unit 202 as basic elements. The group match determination unit 201 determines whether the power restriction target group to which the own device belongs matches the power restriction target group received from the restriction instruction source device. The restriction target determination unit 202 performs the following process when the power restriction target group to which the own device belongs matches the power restriction target group received from the restriction instruction source device. That is, the restriction target determination unit 202 determines a control object to remove the power restriction from among the control objects belonging to the belonging power restriction object group and a control object to perform other power restriction. As a result, the power control apparatus 100 can automatically determine the power limitation target in the entire system in consideration of the limitation target that cannot be power limited when performing power limitation.

  In the configuration illustrated in FIG. 1, the power failure execution determination unit 20 is an example of the group match determination unit 201. The operating device determination unit 4 is an example of the restriction target determination unit 202.

  For example, the blocks shown in FIG. 1 can be appropriately integrated, divided, or distributed. A part or all of the program executed by the processor of the present embodiment can be distributed via a computer-readable recording medium or a communication line.

DESCRIPTION OF SYMBOLS 100 Power control apparatus 201 Group coincidence determination part 202 Restriction object judgment part 20 Power failure execution judgment part 4 Operation apparatus judgment part

Claims (7)

A group match determination unit that determines whether the power limit target group to which the device belongs belongs and the power limit target group received from the limit instruction source device;
When the power restriction target group to which the own device belongs and the power restriction target group received from the restriction instruction source device match, the control target to remove the power restriction among the control targets belonging to the belonging power restriction target group; A restriction target determining unit that determines a control target for performing other power restrictions;
With
The control target is composed of a server device and its peripheral devices,
The restriction target determining unit compares the power consumption of the server device identified as corresponding to the control target specified by the priority order and its peripheral devices with the total supply power that can be supplied to the control target, and the server If the power consumption of the device and its peripheral devices exceeds the total power supply, the server device included in the control target specified by the priority order and all the peripheral devices used only by the server device are limited to the power limit. the power control device according to claim Rukoto determining a control target of. The restriction target determination unit compares the total supply power that can be supplied to the control target and the power consumption of the control target specified by the priority order, and limits the power based on the priority order until the total supply power is reached. The power control apparatus according to claim 1, wherein the control target to be removed is determined. Analyzing the data described in the markup language received from the restriction instruction source device, further comprising an information analysis unit for identifying the power restriction target group,
The power control apparatus according to claim 1, wherein the power restriction target group received from the restriction instruction source apparatus is the power restriction target group specified by the information analysis unit. The control target that removes the power restriction from among the control objects belonging to the group to which the power restriction belongs belongs, based on the power consumption of the control target that specifies the application program in priority order and executes the application program. And a control target to be subjected to power limitation other than that is determined. The power control apparatus according to any one of claims 1 to 3 . A storage unit for storing information indicating whether the control target is essential;
When determining that the control target stored as essential in the storage unit is a control target for performing the power limit, the limit target determination unit determines that all control targets belonging to the power limit target group belong to the power The power control apparatus according to any one of claims 1 to 4 , wherein the control target is determined to be limited. The group match determination unit determines whether the power limit target group to which the device belongs belongs to the power limit target group received from the limit instruction source device,
When the restriction target determination unit matches the power restriction target group to which the own device belongs and the power restriction target group received from the restriction instruction source device, the control target belonging to the power restriction target group belongs to the server Determining a control target to remove the power limit from the control target composed of the device and its peripheral device, and a control target to perform the other power limit ,
The restriction target determining unit compares the power consumption of the server device identified as corresponding to the control target specified by the priority order and its peripheral devices with the total supply power that can be supplied to the control target, If the power consumption of the device and its peripheral devices exceeds the total power supply, the server device included in the control target specified by the priority order and all the peripheral devices used only by the server device are limited to the power limit. A power control method characterized by determining a control target to be performed . The group match determination unit determines whether the power limit target group to which the device belongs belongs to the power limit target group received from the limit instruction source device,
When the restriction target determination unit matches the power restriction target group to which the own device belongs and the power restriction target group received from the restriction instruction source device, the control target belonging to the power restriction target group belongs to the server Determining a control target to remove the power limit from the control target composed of the device and its peripheral device, and a control target to perform the other power limit ,
By comparing the power consumption of the server device identified as corresponding to the control target specified by the priority order and the peripheral device by the restriction target determination unit and the total supply power that can be supplied to the control target, If the power consumption of the device and its peripheral devices exceeds the total power supply, the server device included in the control target specified by the priority order and all the peripheral devices used only by the server device are limited to the power limit. A program that causes a computer to execute a process for determining a control target to be performed.

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