JP2907198B1 - Power control method for uninterruptible power supply using private LAN - Google Patents

Abstract

Abstract: An uninterruptible power supply capable of identifying a slave UPS in which an abnormality has occurred, determining the type of the abnormality, and interlocking power with a selected UPS, and performing optimal power control for system operation. Providing a power supply control method for power supply units. A master UPS and a slave UPS are connected via a local network (LAN), power-linked control is performed by data transfer via the LAN, and when a failure occurs in the slave UPS, the slave UPS switches from the master UPS to the master UPS.
Notify the PS that a fault has occurred, and use the master UPS
In response to the inquiry from the master UPS, the master UPS transmits the detailed failure information to the master UPS, notifies the basic processing device of the failure information, and stops the operation of the slave UPS according to the instruction of the basic processing device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an uninterruptible power supply, and more particularly to an uninterrupted power supply using a private LAN (local area network).
Power Supply).

[0002]

2. Description of the Related Art Conventionally, a master uninterruptible power supply (hereinafter referred to as "master UPS") connected to a basic processing unit and an uninterruptible power supply control unit ("slave UP") connected in a subordinate manner thereto.
S ”) uses a contact interface, and information that can be notified when an abnormality occurs in a subordinate UPS includes (1) occurrence of a power failure, (2) low battery voltage, and (3) UPS internal abnormality occurrence is limited to three types.

[0003] For this reason, the dependent UPS and the basic processing device connected thereto cannot know the details of the abnormality of the dependent UPS, and it is impossible to perform detailed power control as a system. Was.

[0004] Further, when there are a plurality of subordinate UPSs, it is impossible to specify which UPS has an abnormality, and it is necessary for a maintenance person to go to the site (UPS installation location). Because the details of the abnormality were not known, it was impossible to perform quick maintenance.

[0005]

In the prior art described above, in a system having a plurality of cascaded UPSs, a UPS (master UP) connected to a basic processing unit is used.
Since S) cannot identify which slave UPS of the dependent UPSs (slave UPS) has an abnormality, even if the device supplied with power from the slave UPS in which the abnormality has occurred is not operating. There was an operational problem that the entire system had to be stopped at least.

Further, since it is not possible to identify what kind of abnormality has occurred on the slave UPS side,
Regardless of the degree of abnormality on the PS side, for example, a process of shutting down the system must be uniformly performed. Thus, when the slave UPS is stopped due to an abnormality in the power supply or the like on the slave UPS side, the abnormal signal from the slave UPS disappears, and the master UPS looks as if the abnormality of the slave UPS has been recovered. However, there is a problem in system operation that only the device connected to the slave UPS suddenly disappears without any abnormality.

Further, in any case, the master UP
The basic processing device connected to S has a slave UPS
Regarding the abnormality on the side, it is impossible to know information other than that something is happening in the slave UPS, and it is possible for the maintenance staff to know what kind of abnormality occurred in the subordinate UPS until going to the site I could not do it, and there was a problem in terms of maintenance.

Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to enable a basic processing device connected to a master UPS to specify a slave UPS in which an abnormality has occurred, and An object of the present invention is to provide a power supply control method of an uninterruptible power supply device that enables a type of abnormality to be determined and enables power supply interlocking with a selected UPS to perform power supply control optimal for system operation.

[0009]

In order to achieve the above object, a power supply control system according to the present invention comprises a basic processing unit, a master power outage power supply unit (referred to as a "master UPS"), and one or more power supply interlocked with the master UPS. In a system provided with a plurality of slave uninterruptible power supply devices (referred to as "slave UPS"), the master UPS and the slave UPS are connected via a local network (LAN), and the power-linked operation is controlled by the LAN. When a failure occurs in the slave UPS, the slave UPS notifies the master UPS that a failure has occurred, and detailed failure information is transmitted to the master UPS in response to an inquiry from the master UPS.
The master UPS notifies the basic processing device of the failure information, and stops the operation of the slave UPS according to the instruction of the basic processing device.

In the present invention, the slave UPS has unique identification information. In the present invention, the master UPS is connected to the slave UPS by a private network, preferably via a private LAN interface.

[0011]

Embodiments of the present invention will be described below. According to a preferred embodiment of the present invention, a master UPS and a slave UPS are connected via a local area network (LAN), and power-linked control is performed by data transfer via the LAN. is there.

In the embodiment of the present invention,
When a failure occurs in the slave UPS, the slave UPS notifies the master UPS of the failure and transmits detailed failure information to the master UPS in response to an inquiry from the master UPS. Is controlled to stop the operation of the faulty slave UPS according to the instruction of the basic processing device.

As described above, in the embodiment of the present invention, the UPS using the conventional contact interface is used.
Instead of interlocking the power supply between the slaves, the slave UP using a command format using a local area network (LAN)
The power supply interlocking with the S is controlled, and each of the UPSs is provided with unique identification information so that when an error occurs on the slave UPS side, it is possible to notify which UPS has generated an error. Things.

According to the embodiment of the present invention, the number of UPSs linked to the power supply is not limited, and there is no fear of signal deterioration due to the contact interface, so that the life and reliability of the device are improved.

Further, according to the embodiment of the present invention, the remote UPS can be linked with the power supply. Furthermore, in the embodiment of the present invention, quick maintenance is possible by linking with a known automatic notification system, and remote maintenance can be performed depending on the type of abnormality, thereby improving maintainability.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to describe the above-mentioned embodiment of the present invention in more detail, an embodiment of the present invention will be described below. FIG. 1 is a block diagram showing the configuration of one embodiment of the present invention. FIG. 2 is a flowchart showing a processing flow when power is turned on in one embodiment of the present invention. FIG. 3 is a flowchart showing a processing flow when an abnormality occurs on the slave UPS side in one embodiment of the present invention.

Referring to FIG. 1, this embodiment includes a basic processing unit 100, an uninterruptible power supply (master UPS) 200 connected to the basic processing unit 100, and a master UPS.
200 and first and second slave U cascaded
PSs 300 and 400 are provided.

The master UPS 200 is a public LA.
N interface unit 210 and control program storage unit 2
20, a central processing unit 230, a server interface unit 240, and a private LAN interface unit 250
, A UPS communication unit 260 and a UPS control unit 270.

The central processing unit 230 monitors input factors from the network through the public LAN interface unit 210 and other input factors, and controls the first and second slave UPSs 300 and 400 through the private LAN interface unit 250. .

The server interface unit 240 receives various settings from the basic processing device 100, a power stop command, and the like, and reports the status of the master UPS 200 and the first and second slave UPSs 300 and 400 to the basic processing device 100.

Private LAN interface 25
0 indicates that the central processing unit 230 sends the slave UPSs 300 and 4
00 is instructed to link the power supply, the slave UPS 300,
An instruction to turn on the power is sent to 400.

When an instruction to collect detailed information is issued from the central control unit 230, the private LAN interface unit 250
For 0, an inquiry about detailed abnormality information is made. Further, the central control unit 230 is notified of the interrupt of the occurrence of the abnormality and the response of the abnormality details from the slave UPS 300 or 400 via the private network.

The UPS control unit 270 is connected to the UPS communication unit 26
0, the AC power output of the UPS 200 is controlled in accordance with a power on / off instruction from the central processing unit 230.

The operation of this embodiment will be described with reference to FIGS. 1, 2 and 3.

As an initial setting, the slave UPS 400 to be linked with the power supply is set to the master UPS 200.

A unique number or name is set as identification information in each slave UPS, and each slave UPS
S should be able to be identified.

When the power is turned on, the central processing unit 230 of the master UPS 200 detects the occurrence of a power-on factor (step 21 in FIG. 2) and, based on the control program stored in the control program storage unit 220, connects the device to the power supply. Check the slave UPS to be linked (Step 2 in FIG. 2)
2). The UPS to be linked here is the slave UPS 400
Then, the central processing unit 230 instructs the private LAN interface unit 250 to power on the slave UPS 400.

Upon receiving the instruction from the central processing unit 230, the private LAN interface unit 250 sends a power-on command to the corresponding slave UPS 400 on the private network (step 23 in FIG. 2).

The private LAN interface unit 25
0 indicates that the slave UPS 400 receives a power-on completion notification from the slave UPS 400 instructed to turn on the power.
Is turned on (step 24 in FIG. 2), and a report is made to the central control unit 230.

Upon receiving the report, the central processing unit 230
The UPS control unit 280 is instructed via the communication unit 270 to start power supply to the basic processing device 100 (step 25 in FIG. 2).

Next, when an abnormality occurs in the slave UPS 400, the slave UPS 400 connects to the private LAN interface unit 2 via the private network.
An abnormality occurrence interrupt is sent to the CPU 50 (step 31 in FIG. 3).

The private LAN interface unit 250 that has received the abnormality occurrence interrupt notifies the central processing unit 230. In response to the notification, the central processing unit 230 instructs the private LAN interface unit 250 to report details of the abnormality that has occurred. In response, the private LAN interface unit 250 sets the slave UPS 40
In response to 0, an abnormal detail inquiry is sent to the slave UPS 400 via the private network (step 32 in FIG. 3).

Slave U that has received the abnormal detail inquiry
The PS 400 replies details of the abnormality (step 33 in FIG. 3).

Private L that has received the detailed contents of the abnormality
The AN interface unit 250 notifies the central processing unit 230. Upon receiving this notification, the central processing unit 230 reports details of the abnormal state of the slave UPS 400 to the basic processing device 100 through the server interface unit 240 (step 34 in FIG. 3).

The basic processing device 100 that has received the report performs system shutdown or disconnects the device in consideration of the abnormal state and the device connected to the abnormal slave UPS. Master UP at system shutdown
For S200, an instruction to power off all UPSs is issued through the server interface unit 240. On the other hand, in the case of disconnection of the failed device, the server interface unit 2
A power-off instruction is issued only to the abnormal slave UPS through 40 (step 35 in FIG. 3).

[0036]

As described above, according to the present invention, the following effects can be obtained.

The first effect of the present invention is that which slave UP
That is, it is possible to identify whether an abnormality has occurred in S.

The reason is that, in the present invention, it is possible to judge whether continuous operation is possible based on the type of equipment connected to the UPS in which an abnormality has occurred.

A second effect of the present invention is that it is possible to identify what kind of abnormality has occurred in the slave UPS, and to judge whether the system can be continuously operated based on the type of abnormality. It is.

A third effect of the present invention is that the power supply can be linked with the selected slave UPS, so that power supply control suitable for the system operation of the user can be performed.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of one embodiment of the present invention.

FIG. 3 is a flowchart for explaining the operation of one embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 basic processing device 200 uninterruptible power supply (master UPS) 210 public LAN interface unit 220 control program storage unit 230 central processing unit 240 server interface unit 250 private LAN interface unit 260 UPS communication unit 270 UPS control unit 300 uninterruptible power supply 1 (Slave UPS1) 400 Uninterruptible power supply 2 (Slave UPS2)

Claims (4)

(57) [Claims] 1. A basic processing device, a master uninterruptible power supply (hereinafter referred to as "master UPS"), and
A system comprising one or a plurality of slave uninterruptible power supply devices (hereinafter referred to as “slave UPS”) that is power-linked to the S. The master UPS and the slave UPS are connected via a local network (LAN). Interlocking control is performed by data transfer via the LAN, and when a failure occurs in the slave UPS, the slave UPS
And notifies the master UPS of the occurrence of the failure, and transmits detailed failure information to the master UPS in response to an inquiry from the master UPS.The master UPS notifies the basic processing device of the failure information, Slave UP according to the instruction of the basic processing unit
A power control method, wherein the operation of S is stopped. 2. The power supply control method according to claim 1, wherein said slave UPS has unique identification information. 3. The master UPS is a slave UPS.
2. The power supply control method according to claim 1, wherein the power supply control method is connected to a private network via an private LAN interface. 4. A basic processing unit, a master power outage power supply (referred to as "master UPS"), and said master UPS
A master UPS and the slave UPS are connected via a local network (LAN) in a system including one or a plurality of slave uninterruptible power supply devices (hereinafter referred to as “slave UPS”) that are power-linked to the power supply. Is performed by data transfer via the LAN, and when a failure occurs, the slave UPS
S notifies the master UPS of the occurrence of a fault via the LAN, and sends detailed fault information to the master UPS in response to an inquiry from the master UPS.
The master UPS notifies the failure information from the slave UPS to the basic processing device, and stops the operation of one or more of the slave UPSs according to an instruction from the basic processing device. A power supply control method comprising a control unit.