JPS58195432A - Computer system for multiplex power system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Contact Field of the Invention] The present invention relates to a computer system for a multiple power system, particularly a computer system for a multiple power system that monitors and controls a power system using a plurality of electronic computers and stores system status data. It is related to computer systems.

[Technical background of the invention]

In a multi-system computer system consisting of multiple computers, each computer is always up-to-date with the latest information, such as an online computer that processes business, and a computer that is not processing business but is in online mode. There are three operating modes: a standby mode in which information can be received and the computer can go online at any time, a working mode in which the computer is currently processing tasks, and a stop mode in which the computer is stopped.

Furthermore, if we classify this from the perspective of whether or not the power system status record data that is stored in the auxiliary storage device is being saved and updated, firstly, online mode and standby mode that are actively saving, and secondly, 2) a work mode in which no data is actively saved; and 3) a stop mode in which data cannot be saved.

In the following description, for simplicity, these modes will be referred to as data update mode, non-update mode, and stop mode, respectively. In addition, depending on the method of operating the system, for example, tasks may be divided into highly realistic tasks such as power system control and monitoring, and less realistic tasks such as power system operational calculations. A control mode that handles the former, and a control mode that handles the latter.

In some cases, various motors such as a calculation mode for system simulation and a row now simulation mode for system simulation are created, but no matter what mode there is, basically the above data update mode, non-update mode, and stop mode are used respectively. Since these three modes can be treated separately, these three modes will be explained. Further, in the following explanation, two computer systems i shown in FIG. 111 will be explained as an example.

In Figure tIII41, computers 2m and 2b have auxiliary storage devices 4m and 4b that can be accessed from either side, and now the series 2m-4m is in data update mode, 2b-4
Suppose that the series b is in non-update mode. The state of the power grid system is input to the computer 21 through the input/output device 1a and processed! The recording program included in the program group 7a bypasses the channel 5m and is imported into the independent auxiliary storage device 4a. On the other hand, since the system 2b-4b is in the non-update mode, the input/output device 1b is not used, and the processing program group 7k is used as the auxiliary storage device 4.
Even if there is an access to h”−,, the power ■,.

System record data is never stored in the auxiliary storage device 4b.

Next, we will discuss the transition when setting 2b-4b to data update mode in order to create a highly reliable system operation configuration such as one-sided online mode and one-sided standby mode in response to some external request. explain.

Upon receiving the request, the mode switching device 3 generally initializes the computer 2b and then instructs the operation mode determining device 8b to shift to the data update mode. In order to display the data update mode, it is necessary to restore the latest power system status record data (as much as possible) to the auxiliary storage device 4b of the own system, and the operation mode determining device 8b follows the above logic. A stone that initializes the recorded data of the self-system auxiliary storage device 4b, that is,
If the partner system is in the data update mode, the data recorded in the auxiliary storage device 4a of the partner system is copied to the own system, and if the partner system is not in the data update mode, nothing is done until that time. In the case where the operation mode determination device 8b has learned that the partner system is in the data update mode through the intercomputer data link means 13, the operation mode determination device 8b transfers the power system state record data in the partner system auxiliary storage device 41 to the channel 6.
b.

5b to the self-system auxiliary storage device 4b.

In this way, while the data update mode exists in either system, a highly reliable computer system can be realized without causing any loss in the power system state record data.

[Problems with background technology]

If the data update mode no longer exists because the data update mode becomes a stop mode for some reason, the following inconvenience will occur.

That is, as shown in the time chart of Fig. 2, 2m-
If 2m-4m '□ goes into stop mode at time t1 in a state where 4m is in update mode and 2b-4b is in non-update mode, if you try to start up computer 2b, which is normal as a computer, in update mode, If the partner system 2a is in the stop mode after time tl, the power system system data is also gone after t1, so the computer 2b starts up with the power system state record data not updated. ~1. This is because the power system state record data was not updated or saved during this period because it was in a non-update mode.

Furthermore, at time ts, the cause of the stoppage of the computer 21 is removed,
When the computer 21 is started up again in the data update mode, this time the other computer 2b is in the data update mode, so the above 9t.~1. The power system status record sickle data containing the missing data between the two is copied to the auxiliary storage device 4a, and both auxiliary storage devices end up having missing data. The extent of this loss is 9 hours because one system is in non-update mode, but in power system computer systems, maintenance is essential for equipment expansion, and recently training has been conducted with one system in simulator mode. Therefore, it is not possible to completely eliminate this non-update mode time.In this way, when the data update mode is set to only one system in the conventional equipment, power system status record data may be lost for a long time. Can be □7,
□□, ゛・呵・ In addition, in a power system computer system, the function of processing and storing the grid status of the past few years is extremely important, and in the event that the power system record data is lost, This is especially true since the operator must supplement the time between the two.

[Purpose of the invention]

The present invention has been made with the aim of solving the above-mentioned problems, and is intended to eliminate long-term loss of power system status record data as much as possible, and even if a loss occurs, it will be covered as much as possible. The purpose of this study is to provide a computer system for multiple power systems that can narrow down the number of power systems.

[Summary of the invention]

In the present invention, a data update flag creation device and an optimal record restoration device are provided in each computer, and a mode flag is also provided in each auxiliary storage device, so that the i-series computers can be used in update mode.
Write the year, month, day, hour, and minute in this field, and set it as 111111, and when switching the operation mode, write the above auxiliary notes:
:).

Mode in storage device′)? Which computer's power system status record data is closer to the current data? 1
If this is not the local system, it is copied from the nearest partner system to the local system's auxiliary storage and restored, in an attempt to prevent the occurrence of missing data as much as possible.

[Embodiments of the invention]

Examples will be described below with reference to the drawings. ! FIG. 3 is a configuration diagram of an embodiment of a computer system for a multiple power system according to the present invention. The same reference numerals in FIG. 1 as in FIG. 1 have the same functions and correspond to each other.

Reference numerals 9m and 9b are data update flag creation devices that store the computer time (year, month, date, hour, and minute) in the auxiliary storage device of its own system at regular intervals of, for example, every minute while the computer is in data update mode. The e i Oa * 10 b written in the storage device mode flags 11a and 11b determines the auxiliary storage device that is the optimal record restoration device and has the latest power system record data 12m and 12b, and if necessary, the self-system auxiliary storage device. Copy and restore each. Note that when the optimum recording restoration device determines the latest auxiliary storage device, it refers to each auxiliary storage device mode flag 11m, 11b.

Further, the data update flag creation devices 9m and 9b are configured so that they do not update the flag when the computer is in the non-update mode, and cannot update the flag when the computer is in the stop mode.

The following will explain the case in which a command is transmitted from the mode switching device 3 to the driving mode determining device 8b. When the command is received, the driving mode determining device 8b determines the mode to be started, and transmits the command to the optimal recording restoration device 10b. tell. This optimum recording and restoring device 10b uses channel 11 if its own system is in the non-update mode, but when it should start up in the data update mode, it uses channel 5b.

The mode flags 11m and 11b on each auxiliary storage device 4m and 4b are input through 6b, and the one closest to the current time is determined to be the optimal record storage auxiliary storage device, and this record must be from the own system. For example, channels 5b and 6b are used to copy and restore the power system record data 12b on the auxiliary storage device of the own system.

For example, as shown in FIG. 4, immediately after 2@-4m changes from data update mode to stop mode at time tl,
If the computer 2b is started up in the non-update mode or in the data update mode, the mode flag l1m of the auxiliary storage device 4a is set to the time immediately before the machine stops; The mode flag llb is only set to the time when it was in the data update mode before entering the non-update mode t, and is not set during the non-update mode period t.~t1.

Therefore, the optimal recording restoration device 10b is the auxiliary storage device 41.
Recorded data 12m is determined to be optimal and recorded data 12
Since the computer 2b does not start up in the data update mode after copying to the computer 2b, data loss can be limited to a plurality of computer stop times t. In the above explanation, it is assumed that the data update flag creation device counts the computer time for simple rounding, but the present invention is not limited to this. For example, any information such as a counter that can determine the context of the time can be used. It may be a means.

FIG. 5 is an embodiment of the present invention. In this embodiment, a record defect output device 14 a a 14 b that outputs the degree of record defect, if any, is added to the outside. The configuration is the same as that shown in FIG.

If you start up the computer in data update mode now,
Even though the optimal recording was restored using the optimal recording restoration device,
If records are lost due to suspension of both systems,
Record defect output device 14&.

14b, for example, the mode flag 11 of the auxiliary storage device
m, 11bK Outputs the data update mode time in a form that is understandable to the operator.

In the above explanation, the data update flag creation device writes the computer # clock at regular intervals, but the invention is not limited to this. For example, when the data update mode is established, the flag is set and written, and in the non-update mode, it is written. If you clear this flag and have the computer in data update mode refer to this flag when the other system stops and runs, you can eliminate the 9 points mentioned earlier that are disadvantageous or disliked. ': Of course.

[Effect of the Invention] 1. As explained above, according to the present invention, each computer in a plurality of computers is provided with a data update flag creation device and a latest memory restoration device, and an auxiliary storage device is provided in the auxiliary storage device of each computer. Create a storage device mode flag, write the fact that the computer is in data update mode to the spinning auxiliary storage device mode fog according to the computer time, and when changing the operation mode,
Since the configuration is configured to refer to the auxiliary storage device mode flag to determine the auxiliary storage device with the latest updated data, it is possible to limit loss of power system record data to multiple computer downtimes, and to prevent multiple computer loss from occurring over a long period of time. We can provide computer systems for grid power systems.

[Brief explanation of drawings]

Figure 1 is a diagram of a computer system for a multiple power system according to the conventional method, Figure 2 is a time chart showing an overview of the operation, Figure 3 is a diagram of a computer system for a multiple power system according to the present invention, and Figure 4 is a diagram of a computer system for a multiple power system according to the present invention. A time chart showing an outline of the operation, and Figure 5 is a system diagram of another embodiment of a computer system for a multiple power system. i a * 1 b...I/O device 2m, 2b...
・Electronic computer 3...Mode switching device 4m, 4b
... Auxiliary storage device 5 & I 5 b * 6 a
m 6 b...Channel 7 m + 7 b...
・Processing program group 8 a #8 b...Operation mode determining device 9m, 9+...Data update flag creation device 10m, 10+...Optimum record restoration device 11m, 1
1b... Auxiliary storage device mode flag 12m, 12b.
...Power system status record data 13...Inter-computer data link means 14m, 14b...Record loss output device Patent applicant Tokyo Shibaura Electric Co., Ltd. Agent Patent attorney Norio Ishii Figure 1, I υ-- 1---1---3rd
figure

Claims (2)

[Claims] (1) Consisting of multiple computers and auxiliary storage devices, each computer has a processing program group and an operation mode determining device that mutually access the auxiliary storage devices, and provides data links between the computers. In a computer system for a multi-system power system that can exchange data using Equipped with an auxiliary storage device mode flag, when changing the operation mode, the optimal record restoration device determines the auxiliary storage device that has the latest power system record data by referring to the auxiliary storage device mode flag in the auxiliary storage device, and automatically selects the auxiliary storage device that has the latest power system record data. A computer system for a multi-system power system, characterized in that data is restored to an auxiliary storage device of the system. (2) Each computer is characterized by being equipped with a record loss output unit that outputs the degree of loss in the power system record data when the computer is started up in the data update mode and there is a loss at 9 o'clock. A computer system for a multiple power system according to claim 1.