JP5211717B2 - Power management device - Google Patents

Description

The present invention relates to power management equipment for setting control an uninterruptible power supply, in particular relates to a power management equipment which is adapted to limit the backup time during a power failure.

  Some computer systems are equipped with an uninterruptible power supply (UPS) in order to prevent a system from being shut down due to a power failure or momentary interruption of a commercial power supply or an important peripheral device from being stopped. The uninterruptible power supply starts battery operation simultaneously with a power failure or instantaneous interruption, and supplies power to a server computer (hereinafter simply referred to as a server). Thereafter, the connected server is configured to perform shutdown processing as necessary.

  FIG. 5 is a system configuration diagram showing an example of a conventional uninterruptible power supply system. This system includes a UPS 3 connected to a commercial power source 1 via a circuit breaker 2, and a server 11 that receives power supply from the UPS 3 and peripheral devices 12 such as a printer and an HDD are connected. Further, the commercial power source 1 is supplied via the circuit breaker 2 to the peripheral device 13 that does not require battery backup from the UPS 3. The server 11 is connected to the UPS 3 by a communication line 14 for transmitting a stop command or the like.

FIG. 6 is a timing chart for explaining the procedure of the conventional shutdown process. In the uninterruptible power supply system of FIG. 5, a shutdown command is sent to the server 11 via the communication line 14 when a power failure occurs in the external commercial power supply 1 or when the scheduled power supply is turned off. The UPS is reliably executed, and a UPS stop command is generated by the UPS control software built in the server 11 to stop the UPS 3 battery backup.

  That is, when a commercial power failure occurs (time t1) shown in FIG. 6A, the UPS input as the power source of the UPS 3 is turned off and at the same time the UPS output to the server 11 or the like is switched to the backup output (FIG. b), (c)). Therefore, since power is continuously supplied to the server 11 and the peripheral device 12, when the server 11 starts to shut down, the server 11 can output a UPS stop command to the UPS 3 ((c) in FIG. ), (D)). At this time, in the UPS 3, since the backup time continues until time t2 immediately after the shutdown of the server 11, the operation of the peripheral device 12 can be continued, but the peripheral device 13 stops simultaneously with the occurrence of a power failure ((e) in FIG. (F)).

  When commercial power is restored at time t3, power supply to the UPS 3, the server 11, and the peripheral devices 12 and 13 is resumed, and the operations of the peripheral devices 12 and 13 are started simultaneously with the activation of the server 11.

In Patent Document 1, an internal power supply is generated while receiving an external power supply, and an internal power supply is generated and supplied. When the external power supply stops, the internal battery continues to supply the internal power supply and the external power supply. There is a description of an uninterruptible power supply that notifies that the supply of power is stopped and stops the supply of internal power when a shutdown instruction is received.
JP 2002-297270 A (paragraph numbers [0026] to [0047], FIG. 1)

  FIG. 7 is a timing chart showing an operation at the time of a conventional maintenance power failure. In the conventional uninterruptible power supply, the following inconvenience has occurred in maintenance performed with the server 11 stopped.

  That is, in order to perform maintenance of the peripheral devices 12 and 13 and maintenance of the server 11, the UPS input is turned off by turning off the circuit breaker 2 in a state where only the server 11 is stopped without stopping the UPS output. Maintenance is performed. However, since the UPS control software for controlling the UPS 3 is not activated in the server 11 in the stopped state, a UPS output stop command is not transmitted. Therefore, the peripheral device 12 receiving the supply of UPS output cannot perform maintenance by turning off the power supply, and has to be physically separated from the UPS 3.

  Further, when the circuit breaker 2 is turned off, the battery backup state in which the UPS output does not stop continues, so that there is a problem that the server 11 does not start even if the circuit breaker 2 is turned on after that. Furthermore, if the backup time for the UPS 3 becomes longer during a maintenance power outage, the characteristics of the battery connected thereto may deteriorate, and it is desirable not to perform unnecessary backup while the server 11 is stopped. It was rare.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a power management equipment that is not performed battery backup during server shutdown.

In the present invention, in order to solve the above problem, in the power management device that is connected to the uninterruptible power supply capable of changing the backup time and controls the uninterruptible power supply, on the load side of the uninterruptible power supply Command generating means for generating a first command for increasing the backup time when the connected device is activated, and generating a second command for reducing the backup time when the device is stopped for maintenance work ; Transmission means for transmitting the first command or the second command generated by the command generation means to the uninterruptible power supply, and transmitting the uninterruptible power supply according to the operation status of the device by been the first command or the second command, change the maximum backup time by the uninterruptible power supply Power management device is characterized in that as a constant is provided.

The present invention can limit the backup time to a short time even when the server connected to the load side of the uninterruptible power supply (UPS) is stopped.

  According to the present invention, when a device as a load is not in operation, the backup time can be limited to a short time, so unnecessary backup is avoided. Further, since the backup time is shortened, there is no possibility of deteriorating battery characteristics. In addition, since the backup function itself is not stopped in the uninterruptible power supply device, when an instantaneous power failure or the like, which is not a maintenance power failure, occurs, the instantaneous power failure can be backed up to protect the load device.

Embodiments of the present invention will be described below with reference to the drawings.
(Embodiment 1)
FIG. 1 is a diagram showing a configuration of UPS control software according to the first embodiment.

  The UPS control software 30 constitutes a power management apparatus that operates on the server side, and the server is connected to an uninterruptible power supply that can change the backup time. The UPS control software 30 includes a command generation unit 31 that generates a command that increases the backup time when the server is started, a command generation unit 32 that generates a command that decreases the backup time when the server is stopped, and command generation units 31 and 32. It is comprised from the command transmission part 33 which transmits the command produced | generated by UPS to UPS.

  FIG. 2 is a timing chart showing an operation at the time of a maintenance power failure according to the first embodiment. Here, description will be made on the assumption of a system configuration similar to that of the conventional uninterruptible power supply system shown in FIG.

  When the server 11 shuts down, the UPS control software 30 operating on the server 11 generates a command for shortening the maximum backup time by the command generation unit 32 and transmits the command to the UPS 3 from the command transmission unit 33.

  After the server 11 is stopped, the maintenance work of the peripheral devices 12 and 13 is performed, and then the circuit breaker 2 is turned off to generate a maintenance power failure at the UPS input. At this time, since the UPS 3 has already been set to have a short maximum backup time, the UPS output immediately stops and the peripheral devices 12 and 13 are turned off.

  Further, when the circuit breaker 2 is turned on at the end of the maintenance and the UPS input is restored, the UPS output resumes and the server 11 can be started. At this time, the UPS control software 30 that starts the operation on the server 11 generates a command for increasing the maximum backup time in the command generation unit 31 and transmits the command to the UPS 3 from the command transmission unit 33. Therefore, during the subsequent operation of the server 11, a normal power outage backup operation can be performed as in the shutdown process shown in FIG.

  In this way, the UPS control software 30 can limit the backup time at the time of maintenance power outage without impairing the backup function at the time of normal power outage, so there is no possibility of deteriorating the battery characteristics.

  Note that the UPS control software 30 operating on the server 11 confirms that the server 11 is stopped by the UPS 3 when the server 11 is constantly communicating with the UPS 3 when the communication is interrupted. Also good.

(Embodiment 2)
In the first embodiment, the power management apparatus has been described in which the backup time of the UPS 3 is limited so that unnecessary backup is not performed while the server 11 is stopped during a maintenance power failure. In the second embodiment, UPS control software that operates in the UPS 3 so that no backup is performed while the server 11 is stopped will be described.

FIG. 3 is a diagram illustrating the configuration of the UPS control software according to the second embodiment and the third embodiment.
This UPS control software 40 is connected to an external power source and operates on the UPS 3 side that supplies backup power to the load. The UPS control software 40 monitors the operating status of the load server 11 and peripheral device 12 and confirms the stoppage. Load monitoring means 41a and 41b, and stop control means 42 for stopping and controlling the supply of backup power to the server 11, peripheral device 12 and the like according to the monitoring results of these load monitoring means 41a and 41b.

  FIG. 4 is a timing diagram illustrating an operation at the time of a maintenance power failure according to the second embodiment. Here, description will be made on the assumption of a system configuration similar to that of the conventional uninterruptible power supply system shown in FIG.

  After the server 11 is stopped, the maintenance work for the peripheral devices 12 and 13 is performed, and then the circuit breaker 2 is turned off to cause a maintenance power failure at the UPS input. At this time, the load monitoring means 41a of the UPS control software operating in the UPS 3 confirms the operation status of the server 11 by communication. When the load monitoring unit 41a confirms that the server 11 is stopped, the stop control unit 42 outputs a backup stop command, immediately stops battery backup by the UPS 3, and turns off the peripheral devices 12 and 13.

  Further, when the circuit breaker 2 is turned on at the end of maintenance and the UPS input is restored, the UPS output resumes and the server 11 is activated. Note that the UPS control software operating in the UPS 3 confirms the operation status of the server 11 by communication, and if the server 11 is activated, a normal power failure is performed as in the shutdown process shown in FIG. Backup operation becomes possible.

(Embodiment 3)
In the UPS control software 40 of the second embodiment, the load monitoring unit 41a that monitors the operation status of the server 11 confirms the operation status of the server 11 by communication. In the third embodiment, the load monitoring unit 41b Based on the load current value from the device 12, the operating status of the server 11 is determined. Here, when the load monitoring means 41b shown in FIG. 4 determines that the load current value exceeds a predetermined magnitude, it is determined that the peripheral device 12 is activated, and the shutdown process shown in FIG. Similarly, a normal power failure backup operation is performed.

  As the load monitoring means 41a and 41b for monitoring the operation status, the stop of the load is detected by monitoring, for example, a contact signal, a logic signal, or the like other than monitoring by communication with the load or monitoring of the load current value. It may be a thing.

  In the present invention described above, when performing a maintenance power outage operation such as replacement of the power supply in the server 11 and parts of the peripheral devices 12 and 13, it is confirmed that the server 11 serving as a load is stopped in the UPS 3. Can limit the backup time. In addition, the server 11 can be reliably started at the end of the maintenance power outage work.

  In each of the above-described embodiments, the server 11 has been described as an example of a device serving as a load of the UPS 3, but the present invention is generally applicable to uninterruptible power supply devices of various peripheral devices such as communication devices and control devices. .

2 is a diagram showing a configuration of UPS control software according to Embodiment 1. FIG. FIG. 3 is a timing diagram showing an operation at the time of a maintenance power failure according to the first embodiment. It is a figure which shows the structure of UPS control software which concerns on Embodiment 2 and Embodiment 3. FIG. FIG. 10 is a timing diagram showing an operation at the time of a maintenance power failure according to the second embodiment. It is a system block diagram which shows an example of the conventional uninterruptible power supply system. It is a timing diagram explaining the procedure of the conventional shutdown process. It is a timing diagram which shows the operation | movement at the time of the conventional maintenance power failure.

Explanation of symbols

1 Commercial power supply 2 Circuit breaker 3 UPS
11 Server 12, 13 Peripheral device 14 Communication line 30, 40 UPS control software 31, 32 Command generation unit 33 Command transmission unit 41a, 41b Load monitoring means 42 Stop control means

Claims (2)

In a power management device that is connected to an uninterruptible power supply capable of changing the backup time and controls the uninterruptible power supply,
To generate a first command to lengthen the backup time at startup of the device connected to the load side of the uninterruptible power supply, at the time of stoppage for maintenance of the device the second shortening the backup time Command generation means for generating a command;
Transmitting means for transmitting the first command or the second command generated by the command generating means to the uninterruptible power supply;
With
The maximum backup time by the uninterruptible power supply is changed and set by the first command or the second command transmitted to the uninterruptible power supply according to the operating status of the device. Power management device to do.   The power management apparatus according to claim 1, wherein the command generation unit and the transmission unit are provided integrally with a server computer connected to a load side of the uninterruptible power supply.

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