JPH02249916A - Plant information reproducing device - Google Patents

Abstract

PURPOSE:To reproduce a plant information by providing display control means outputting with display the plant data at the time before/after the specified time requesting the reproduction to an interactive display inputting device in accordance with plant history data and a plant reproduction base. CONSTITUTION:An initial information and renewed contents on a plant control table 4 are taken out by preservation means 10 for plant control table to produce them in the history data base 8 for plant reproduction and an index file 9. When the request for plant reproduction is inputted by the interactive process with the display inputting device 11 in reproduction request accepting means 12, a plant reproducing menu data base 13 is formed and also that information is outputted to plant reproduction environment producing means 14. Next, when the reproducing condition is changed-over to an analysis mode, that information is forward to analysis mode changing-over means 16 by the means 14. By displaying picture changing-over means 18, a displaying picture of the device 11 is changed-over to the displaying condition specified from the device 11 to output the picture changing-over information to plant information display means 19. Then, the displaying picture for plant information is displayed on the displaying picture of the device 11 by the means 19.

Description

[Detailed description of the invention] [Object of the invention] (Industrial application field) The present invention reproduces plant information when an accident occurs in an industrial plant, and provides plant information that can be used to support plant accident investigation. Regarding reproduction equipment.

(Conventional technology) For example, in a computer system that automatically operates a thermal power plant, etc., when an abnormality that causes the plant to trip (emergency stop) occurs, a computer system that supports and assists in investigating the cause of the trip is used. It has functions.

Conventionally, such functions include a trip sequence log function and a progress value printing function.

The former function first registers multiple process input points that are considered to be the cause of a plant trip among the contact input points of the process input points and the change mode of the contact state that is the cause of the plant trip as trigger points in advance. .

When one or more of these trigger points changes in the registered change mode, changes in contact inputs related to plant trips, including the trigger point, are chronologically measured in milliseconds starting from that point. The printer prints out a record with a certain level of resolution.

As a result, the main contact points that cause trips are
It is possible to analyze what kind of movement occurred near the trigger point change.

The latter function focuses on the analog signal input point among the process input points, and similarly to the trip sequence log function, the trigger point change is the starting point, and 5 to 10 points are recorded before and after the trigger point change.
This function holds signal changes at analog signal input points over a period of about minutes and records and outputs them from a printer or displays them as a trend graph on a CRT.

For example, 200 to 300 analog signal input points are selected in advance for this elapsed value printing (elapsed value graph). In addition, the resolution of elapsed value printing or elapsed value graph is 1 to 1 due to constraints such as the computer load of the control computer system and the scanning ability of analog signal input.
It is about 0 seconds.

(Problems to be Solved by the Invention) Such conventional devices have the following disadvantages.

In other words, when a serious plant abnormality that leads to a plant trip occurs, it is first necessary to investigate the cause, but the analysis materials at that time are the alarm messages and messages output when the plant abnormality occurs. , automated messages, and printed information on contact state changes of contact points obtained by the above-mentioned trip sequence log function, and
Only process data such as changes in process data obtained with the elapsed value printing function.

On the other hand, there are cases in which the cause of such an accident cannot be predicted, and if the types of plant data to be sampled are limited as in the conventional device described above, it may not be possible to obtain the information necessary to investigate the cause.

Also, depending on the cause, signs of abnormality may gradually appear, and it may not be possible to obtain sufficient data for accident analysis by limiting the sampling period as with the conventional equipment mentioned above. .

In addition to the computer for plant control, a computer system dedicated to accident analysis is sometimes provided, but in this case, the operating system is different from the computer for plant control that operators are constantly using. This is undesirable because it requires the operator to be familiar with the computer system dedicated to accident analysis, which increases the burden on the operator.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a plant information reproducing device that can reproduce plant information and investigate the cause of an abnormality while checking process data when a plant abnormality occurs.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a process input means for inputting process data from a plant at all points, and a process data for all points inputted from the process input means for inputting the latest process data. A process data storage buffer that stores a certain period of time and various information for automatically operating the plant, outputs plant operation information to the plant based on the process data input from the process input means, and controls the operation of the plant. A plant control table means for outputting message information according to the situation, a message information storage buffer for storing the latest message information outputted from the plant information table means for a certain period of time, and a history data for reproducing the plant information. a storage timing determining means for storing stored information in the process data storage buffer and the message information storage buffer as plant history data in the historical data storage means at the occurrence of a preset event and at a predetermined period; A plant control table storage means that stores the contents and changes of the control table means as process control table history data in the history data storage means, and an interactive display input for inputting a plant information reproduction request and displaying the reproduced plant information. When a plant information reproduction request is input from this interactive display input device, the process control table history data up to the specified reproduction request time is retrieved from the historical data storage means to form a plant reproduction base, and the reproduction request is specified. The plant history data for a predetermined period before and after the specified time is retrieved at intervals according to the content of the reproduction request, and the plant data and messages for the predetermined period before and after the specified reproduction request time are exchanged based on the retrieved plant history data and the plant reproduction platform. It is equipped with display control means for displaying and outputting to a mold display input device.

(Operation) Therefore, since all points of process input are sampled, all the information necessary for plant diagnosis can be comprehensively preserved, and plant diagnosis can be appropriately performed.

In addition, the operator can specify the plant information reproduction display.

Detailed consideration can be performed at the time of plant diagnosis, and plant diagnosis can be performed more effectively.

(Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a plant diagnostic device according to an embodiment of the present invention. Note that this plant diagnosis device constitutes a part of a control computer system that controls the operation of the plant.

The process data input means 1 samples all points of a large number of process data from the plant 2 at a fixed period, for example, 1 millisecond, and the sampling data is stored in the process data storage buffer 3 and also used in the plant. It is output to the control table 4. Moreover, this process data input means 1 consists of a dedicated computer system.

When a plant abnormality occurs, the process data storage buffer 3 stores the latest process data in order to be able to investigate changes in the period before and after the plant abnormality when analyzing the plant situation near the occurrence of the plant abnormality. It has a capacity to store all points for a predetermined period of time, for example, 11 minutes.

The plant control table 4 stores a plant automatic operation table that defines the flow of plant control, a word table that defines limit values for all process input points, the number of effective digits, units, and update areas for current values, etc. This is to perform automated plant operation using the stored information and process data input from the process data input means 1, and outputs operation command information to the plant 2, as well as various information messages depending on the operating status. is output to the operator.

This message information includes, for example, a message notifying the progress status of automated driving, a message notifying the occurrence status of an alarm, and the like. Further, this message information is output to and stored in the message information storage buffer 5 when new process data is output from the process data input means 1 and the current value of the process data is updated.

However, if message information is not output when updating process data, a space code indicating that there is no valid memory content is displayed in the message information storage buffer 5.
is output to.

The message information storage buffer 5 is for storing the latest information messages output from the plant control table 4 for a predetermined period.

The storage timing determination means 6 uses trigger point information (described later) obtained from the plant 2 and the plant control table 4.
The timing at which the occurrence of a preset event is detected based on the breakpoint information (described later) obtained from , and the timing at which a predetermined cycle corresponding to the operation stage of the plant 2 has elapsed are used as the timing for saving plant information. When the storage timing is detected, the storage command information SS is output to the plant reproduction history database creation means 7.

When the storage command information SS is output from the storage timing determination means 6, the plant reproduction history database creation means 7 stores the process data or message information in the process data storage buffer 3 and the process data storage buffer 3 and the message information, respectively, based on the contents of the storage command information SS. The message information is retrieved from the message information storage buffer 5 and compiled into historical information in a predetermined format.
This is stored in the plant reproduction history database 8.

Further, the plant reproduction history database creation means 7 includes:
When saving this history information, index information corresponding to the history information is formed so that the stored contents of the plant reproduction history database 8 can be searched at high speed, and the index information is stored in the plant reproduction history database 8 and the index file 9. to be memorized.

The plant control table storage means 10 stores the initial information of the plant control table 4 and the plant control table 4.
When the update information is updated, the update contents are retrieved and stored in the plant reproduction history database 8 in a state where they are compiled into update information of the plant control table 4.

Further, when saving the initial information and update information of the plant control table 4, the plant control table storage means 9 forms search information corresponding to the saved information, and stores the search information in the plant reproduction history database 8 and the index file. Store in 9.

Display input device! Reference numeral 11 constitutes a man-machine interface between an operator and this plant information reproduction device, and includes an operation input means for inputting plant reproduction requests to the plant information reproduction device, and various information from the plant information reproduction device. It consists of a display means for graphically displaying.

Further, the operation input means includes, for example, a touch input device, and the output means includes a color CRT device and the like.

The reproduction request receiving means 12 is for inputting the designation of the plant operation to be reproduced, the designation of the reproduction start timing, the reproduction mode of the plant information, etc. through interaction processing with the display input device 11. When a request for reproduction is input, it is based on the index information stored in the index file 9.

A plant reproduction menu database 13 is constructed, and information indicating the start time of the plant operation requested to be reproduced and information indicating the mode of reproduction are output to the plant reproduction environment generating means 14.

The plant reproduction environment generation means 14 is the reproduction request reception means 1
When information on the reproduction start time and information on the reproduction mode are input from 1, the plant control table at the reproduction start time is reconfigured in the plant reproduction database 15 based on the stored contents of the plant reproduction history database 8, and the reproduction The plant information retrieved from the plant reproduction history database 8 in a cycle according to the mode is set in the current value area of the reconfigured plant control table.

Further, when the reproduction mode is switched to the analysis mode, the plant reproduction environment generation means 14 notifies the analysis mode switching means 16 of this fact. The plant information-time storage file 17 is for temporarily storing the plant information extracted from the plant reproduction history database 8 by the plant reproduction environment generating means 14.

When the plant reproduction environment generation means 14 notifies that the reproduction mode has been switched to the analysis mode, the analysis mode switching means 16 notifies the plant information display means 18 to that effect.

The display screen switching means 19 switches the display screen of the display input device 11 to a display mode specified by the display input device 11, and displays the screen switching information to the plant information display means 1.
Output to 8.

The plant information display means 18 displays the plant control table reconstructed in the plant reproduction database 15, and
Configure a plant information display screen for monitoring in the control computer system based on the information in the current value area,
Input bag that displays the plant information display screen! ! 11 display screen.

FIGS. 2(a) and 2(b) illustrate the storage contents of the process data storage buffer 3.

The process data storage buffer 3 has data storage areas AD1 to ADn that respectively store n points of process data.
and a storage area of the latest data number NDc indicating the latest data in the data storage areas ADI to ADn.

Each data storage area ADI to ADn is identified by a storage area for a point identification value IP for identifying the point and a data number ND from 1 to 660,000, each of which was obtained by one sampling. It consists of a data storage area AR that stores process data. Here, as mentioned above, if the sampling period of the process data input means 1 is 1 millisecond, the total number of process data for a period of 11 minutes is.

It becomes 660,000 pieces.

When process data for all points is input from the process data input means 1 in one sampling, the process data storage buffer 3 stores each process data at the beginning of the empty area of the corresponding data storage areas ADI to ADn. . In addition, if 660,000 pieces of process data have already been stored, the data storage area AR with the data number ND that matches the number obtained by converting the input sequence number - at that time by 5od (660,000) will be stored. Update the contents with the newly entered process data.

Furthermore, when newly storing process data, the process data storage buffer 3 sets the stored data number as the latest data number NDc.

3(a) and 3(b) show an example of the contents stored in the message information storage buffer 5. FIG.

The message information storage buffer 5 consists of a message information storage area AM for storing message information, and a storage area for the latest message number MDc, which stores the storage area for the latest message in the message information storage area AM.

The message information storage area AM is identified by a data number MD ranging from 1 to 660°OOO, and consists of message information storage areas MR each storing one piece of message information output from the plant control table 4.

When message information is input from the plant control table 4, the message information storage buffer 5 stores it at the beginning of the empty area of the message information storage area AM. Also, 6
If 60,000 pieces of message information have already been saved, the input order number l at that time is -od(66
The contents of the message information storage area MH of the message number MD that matches the number converted by 0,000) are updated with the newly inputted message information.

Furthermore, when the message information storage buffer stores new message information, it sets the stored message number as the latest message number MDc.

FIG. 4 shows an example of the trigger point table TBT stored in the storage timing determining means 6.

The trigger point table TBT defines the event occurrence of a trigger point in the trip sequence log function and elapsed value printing function, and includes the point number for identifying the trigger point, the name of the trigger point, and the normality of the trigger point. The state is memorized.

Further, information on each trigger point is obtained directly from the plant 2, and when the state of the trigger point changes from a normal state to a state different from a normal state, it is considered that an event has occurred.

FIG. 5 shows an example of the transition of the operating stages of the plant 2.

Here, the breakpoint BP, BP, 4 indicates the timing when the operation stage of the plant 2 progresses and changes to a new operation stage, and in this case, "seawater system startup",
``Vacuum rise'', ``Ignition preparation'', rMFT reset'', ``
``ignition'', ``ventilation'', ``love check'', ``speed up'', ``parallel'', ``load increase 1'', rFA/PA switching'', ``load increase 2'', ``load drop'', and ``disconnection''. , respectively, are set at breakpoints BP and -BPi.

Furthermore, the storage timing determining means 6 changes the period of the constant periodic storage timing according to the operating stage of the plant 2, thereby enabling efficient sampling of process data according to the operating stage of the plant 2. In other words, the period from startup preparation to ignition is 5 minutes, the period from ignition to completion of startup is 30 seconds, 1 hour during normal operation,
The constant storage timing period is 30 seconds from preparation for shutdown to extinguishing the fire, and 5 minutes from fire extinguishment to completion of shutdown.

An example of the storage command information SS outputted by the storage timing determination means 6 to the plant reproduction history database creation means 7 is shown in FIGS. 6(a) to 6(d).

The basic format of the storage command information SS, as shown in FIG. , time information ST that indicates the time of the save timing, operation mode information PM that indicates the operating mode of the plant 2 at that time, breakpoint number information BP that indicates the breakpoint that caused the save timing, and It consists of trigger point information TP indicating the trigger point that caused the storage timing to occur.

If the cause of the storage timing is a change in the state of the trigger point, the identification value information TI contains "
1" is 1 year, month, and day information SD has the year, month, and day of the trigger occurrence as 1.
Please note that the time information ST stores the time of trigger occurrence, the operation mode information PM stores information on the type of start mode or stop mode at that time, and the breakpoint number information BP does not store any valid information. Type 1 storage command information SS is formed in which blank data is set and trigger point information TP is set with the identification information of the trigger point whose state has changed, and is output to the plant reproduction history database 7 creation means 7. .

If the cause of the save timing is reaching a breakpoint, as shown in FIG. 2(c).

The identification value information TI shows "2", the date information SD shows the year, month and day of reaching the breakpoint, the time information ST shows the time of reaching the breakpoint, and the operation mode information PM shows the startup mode at that time. Or, the stop mode type information is set, the breakpoint number information BP is set with information indicating the reached breakpoint, and the trigger point information TP is set with blank data indicating that no valid information is stored. Type 2 storage command information SS is created and output to the plant reproduction history database 7 creation means 7.

If the cause of the storage timing is the passage of a certain sampling period, as shown in FIG. The current time is stored in the time information ST, the information on the type of start mode or stop mode at that time is stored in the operation mode information PM, and valid information is stored in the break point number information BP and trigger point information TP. The type 3 storage command information SS in which the blank data indicating that the data is not stored is respectively set is formed and outputted to the plant reproduction history database 7 creation means 7.

FIG. 7 shows an example of the stored contents of the plant reproduction history database 8.

The storage areas of the plant reproduction history database 8 include a plant information data area ARp where plant information is stored;
A plant control table reference data area ARb in which initial information of the plant control table 4 is stored; a changed origin data area A in which changes in the plant control table 4 are stored;
Rh, a plant information search data area AYp where plant information search data for efficiently searching plant information stored in the plant information data area ARp is stored, and changes to the plant control table 4 stored in the change history data area ARh. Change history index data area A where change history index data for efficiently searching contents is stored
It is divided into Yh.

FIG. 8 shows the means 7 for creating a history database for plant reproduction.
An example of plant information index data formed by is shown.

This plant information index data includes date information indicating the date and time of the save timing of process data or message information, time information indicating the save timing,
The first block number of the storage area of the plant reproduction history database 8 in which process data or message information is stored, the data size information indicating the size of the stored process data or message information, and the storage timing. Operation mode information that indicates the operation mode of Plant 2, breakpoint information that indicates the breakpoint reached when the cause of the save timing was reaching a breakpoint, and information that indicates the breakpoint that was reached when the cause of the save timing was the trigger point. It consists of trigger point information that indicates the trigger point at which the event occurred when the event occurred.

When the storage command information SS is output from the storage timing determination means 6, the plant reproduction history database creation means 7 first checks the identification value information TI of the storage command information SS.

When the value of the identification value information TI is 1, when 5 minutes have elapsed from that point, the information for 5 minutes before and after the trigger point event is stored in the process data storage buffer 3 and the message information storage buffer. 5, so at that point, the process data storage buffer 3
The entire storage contents of the message information storage buffer 5 and the entire storage contents of the message information storage buffer 5 are continuously stored in the plant information data area ARp of the plant reproduction history database 8.

Also, at that time, plant information index data is formed,
It is stored in the index file 9 and the plant information index data area AYp of the plant reproduction history database 8. In this case, blank data is set in the breakpoint number information.

In addition, the judgment of the elapsed time of 5 minutes is based on the storage command information;・Information S
The latest data number NDc of the process data storage buffer 3 and the latest message number MDc of the message information storage buffer 5 at the time of inputting S are 5od (66
0,000) and detecting that the number has increased by 330,000.

Note that the determination of the elapse of 5 minutes is based on the fact that the latest data number NDc of the process data storage buffer 3 and the latest message number MDc of the message information storage buffer 5 at the time of inputting the storage command information SS are god(660,
000) and detecting that the number has increased by 330,000.

When the value of the identification value information TI of the storage command information SS is 2 or 3, the data number ND that matches the latest data number NDc of the process data storage buffer 3 at that time is stored in the data storage area AR. At the same time, the message information stored in the message information storage area MH of the message number MD that matches the latest message number MDc of the message information storage buffer 5 is read out for all points of the process data, and the message information stored in the message information storage area MH is read out. The data and message information are continuously stored in the plant information data area ARp of the plant reproduction history database 8.

Also, at that time, plant information index data is formed,
It is stored in the index file 9 and the plant information index data area AYp of the plant reproduction history database 8. However, if the value of the identification value information tI of the storage command information SS input at that time is 2, the content of the trigger point information is set to blank data, and if the value of the identification value information TI is 3, sets both the contents of the breakpoint number information and the contents of the trigger point information to blank data.

FIG. 9 shows an example of change history index data formed by the plant control table storage means 1o.

This change history index data includes year, month, and day information that indicates the date and time of the save timing of change history data, time information that indicates the time of save timing, and a plant reproduction history database 8 that stores the change history data. It consists of the first block number indicating the first block of the storage area, and data size information indicating the size of the stored change history data.

The plant control table storage means 10 is updated when the devices constituting the plant reproduction history database 8 are updated or
Once initialized, the current plant control table 4
All contents are extracted and stored in the plant control table reference data area ARb of the plant reproduction history database 8.

Then, once a day at an appropriate time, the plant control table storage means 10 retrieves the contents of the plant control table 4 at that time and compares it with the stored contents of the plant control table reference data area ARb. do.

When it is detected through this comparison that the contents of the plant control table 4 have changed, the plant control table storage means 10 forms change history data consisting only of the change contents, and uses the change history data as a plant reproduction history. It is saved in the change history data area ARh of the database 8.

Further, when detecting a change in the contents of the plant control table 4, if one or more change history data are stored in the change history data area ARh, the change history data are sequentially retrieved in chronological order.

The stored contents of the plant control table reference data area ARb are updated sequentially, and the finally obtained plant control table is
The contents of the plant control table 4 up to the previous day are used as a comparison standard.

When storing change history data in the plant reproduction history database 8, the change history index data described above is formed and the change history index data is stored in the change history index data area ARh of the plant reproduction history database 8 and in the index file. 9, save each.

FIG. 10 shows the stored contents of the index file 9.

This index file 9 has a plant information index data area AXp for storing plant information index data and a change history index data area AXh for storing change history index data.

Plant information index data is stored in the plant information index data area AXp in the order of occurrence, and change history index data is stored in the change history index data area AXh in the order of occurrence.

Now, as described above, since the number of process data points is very large, the amount of plant information data stored in the plant reproduction history database 8 becomes very large. Also, when process data is often stored,
The storage area of the plant reproduction history database 8 is quickly consumed, and it becomes necessary to replace the storage medium that constitutes the plant reproduction history database 8, which has a finite storage capacity.

In this way, for example, an optical disk device whose storage medium can be exchanged is suitable for storing data with a considerably large amount of information, and in this embodiment, this optical disk device is used as the history database 8 for plant reproduction. There is.

However, at present, the access time of optical disk devices is relatively long compared to, for example, magnetic disk devices, and in particular, the time required to seek the target block at the start of access is long, so optical disk devices are frequently accessed. This increases the time loss and impairs the real-time nature of the processing.

Therefore, in this embodiment, when saving data in the plant reproduction history database 8, the influence of the access time of the optical disk device is reduced by waiting until a certain amount of saved data has been accumulated and saving a large amount of data at a time. It is made to be as small as possible so that the real-time performance of processing is not impaired. However, the details of such storage processing are omitted in the description.

Furthermore, the reason for forming the index file 9 consisting only of plant information index data and change history index data is to minimize time loss when accessing index data that needs to be searched quickly. Note that this index file 9 is constructed using a magnetic disk device or the like that has a short access time.

In FIGS. 11(a) and 11(b), the reproduction request receiving means 11 is a display input device! 11 illustrates the stored contents of the plant reproduction menu database 13 that is generated when a reproduction request is accepted from the plant reproduction menu database 11.

The plant reproduction menu database 13 contains the plant 2
Plant operation status information SPD, ~SPD, which provides a summary of the operation status of plant 2 when starting and stopping the plant 2.
is stored for all times of plant operation (in this case, for one time).

One plant operation status information SPD (SPD, ~SP
D,) is a file number FN for identifying each plant operation status information, startup start date and time information SSt indicating the time when the plant operation started,
Startup end time information SEn that indicates the time when startup ended
, Stop start date and time information ESt, which shows the time when the plant operation started to stop, Stop end time information EEn, which shows the time when the stop ended, Start mode MDs, which shows the mode when the plant operation started. , a stop mode MDe indicating the mode at the time of stop, and event information REv which is a chronological list of the types and times of events that occurred during plant operation.

When a plant information reproduction request is input from the display input device 11, the reproduction request accepting means 12 converts the plant information index data stored in the plant information index data area AXP of the index file 9 into the plant information index data area AX.
Check ρ sequentially from the beginning, and the breakpoint number is BP,
From the plant information index data of , to the plant information data of breakpoint number BPi are sequentially extracted as a set of information regarding one round of plant operation from start to stop.

Then, based on the content of the extracted plant information index data, the above-mentioned one plant operation status information SP
D and the formed plant operation status information SPD
are sequentially stored in the plant reproduction menu database 13.

FIG. 12(a) shows the basic screen configuration of the display input device 11 when requesting plant information reproduction.

At the top of the display screen of the display input device 11 is a title section 21.
A screen display section 22 is formed in a large central portion, and a function selection section 23 and a screen division request section 24 are formed at the bottom.

The title section 21 includes a title 21a that displays that the screen is for reproducing plant information, a reproduction period display 21b that displays the operating period of the plant information that is being reproduced, and a breakpoint reached in the current display content of the screen display section 22. Among these, a breakpoint display section 21c that displays the name of the breakpoint that is closest in time, and an analysis mode display section 21d that displays that the analysis mode is selected are formed.

The screen display unit 22 includes a menu screen for accepting plant information reproduction requests from operators, a monitoring screen for reproduced plant information, such as a logic chart display screen, a system diagram display screen, a trend graph display screen, and a sequence display screen. Traffic jam screen, and.

The same screens as the monitoring screen of a normal control computer system, such as the digital trend screen, are displayed.

Further, the screen display section 22 can divide the screen into up to four parts, and can display four different types of screens at the same time.

The function selection section 23 displays a list of functions that can be executed at that time, and the screen division request section 24 displays a 2-split request section 2 for requesting that the screen display section 22 be divided into two.
4a, a three-division request section 24b for requesting that the screen display section 22 be divided into three, and a four-division request section 24c for requesting that the screen display section 22 be divided into four.

Here, if you touch the 2-split request section 24a,
), the single-screen display section 22 is divided into upper and lower halves,
When the 3-split request section 24b is touched, the screen display section 22 is divided into two vertically, and the screen above it is further divided into two horizontally, resulting in three screens, as shown in FIG. Ru. Furthermore, when the four-division requesting section 24c is touched, the screen display section 22 is divided into four screens vertically and horizontally, as shown in FIG. 4(d).

In addition, when displaying a desired screen on each of the divided display screens, first touch the screen to be displayed to select the desired split screen, and then select the display function displayed in the function selection section 23. Touch the type. As a result, the content of the selected display function is displayed on the touched split screen.

For example, when requesting to display one of the display screens on a split screen, if the original size of the selected display screen is larger than the specified screen, the selected display screen will be displayed on the specified screen. The display screen is reduced and displayed at an appropriate scale so that all the contents of the displayed screen can be displayed.

With the above configuration, in the plant reproduction history database 8,
When an optical disk used as a storage medium is newly loaded or when the optical disk is replaced, the plant control table storage means 10 reads out the contents of the plant control table 4 at that time, and stores the contents in the plant reproduction history database 8. The data is saved in the plant control table reference data area ARb.

Further, the plant control table storage means 10, for example,
The contents of the plant control table 4 are retrieved at a prescribed period once a day, and the contents are stored in the plant control table reference data area AR of the plant reproduction history database 8.
It is checked whether the contents have changed from the contents stored in b, and if they have changed, the contents of the change are stored in the change history data area ARh of the plant reproduction history database 8 as change information of the plant control table 4. At the same time, the above-mentioned change history index data is formed, and the change history index data is stored in the plant reproduction history database 8.
Change history index data area AYh and index file 9
It is saved in the change history index data area AXh.

Note that when comparing the contents of the plant control table 4,
When the contents of the plant control table 4 have been updated one or more times, first, the contents of the first plant control table stored in the plant control table standard data area ARb (hereinafter referred to as plant control table standard data) are read out, Next, all the change history index data stored in the change history index data area AXh of the index file 9 is retrieved in chronological order, and by referring to each change history index data, the change history data of the plant reproduction history database 8 is The corresponding change history data is retrieved from the area ARh in chronological order, and the content of the plant control table reference data read out first is sequentially updated to form a plant control table that becomes a reference for comparison.

In this way, each time the contents of the plant control table 4 are updated, the plant table storage means 10 stores the updated contents in the change history data area ARh of the plant history database 8.

Further, change history index data for searching the update contents is formed and saved in the change history index data area AYh of the plant reproduction history database 8 and the change history index data area AXh of the index file 9.

On the other hand, as described above, the process data input means 1 samples the process data from the plant 2 and sequentially stores them in the process data storage buffer 3, and updates the current value of the plant control table 4.

When the plant control table 4 detects a change in the plant state based on the current value of the updated process data, it controls the plant or outputs message information according to an internally defined control example.

Further, message information output from the plant control table 4 is sequentially stored in a message storage buffer 5.

On the other hand, the save timing determining means 6 outputs the type 3 save command information SS at the above-described prescribed period based on the progress status of the automated plant operation based on the plant control table 4, and also When it is detected that the storage command information SS has been reached, type 2 storage command information SS is output.

Further, the storage timing determining means 6 detects a change in the state of the trigger point of the plant 2, and outputs type 1 storage command information SS when it detects the occurrence of an event at the trigger point.

As a result, the plant reproduction history database creation means 7 selects each of the process data storage buffer 3 and message information storage buffer 5 based on the contents of the storage command information SS output from the storage timing determination means 6. The process data and message information are extracted and stored in the plant information data area ARp of the plant reproduction history database 8.

At the same time, as described above, the plant reproduction history database creation means 7 forms plant information index data for searching the stored data, and uses the plant information index data as the plant information in the plant reproduction history database 8. The index data area AYp and the plant information index data area AXp of the index file are respectively saved.

In this way, during the operation of the plant 2, when the cycle according to the operation status of the plant 2 and the operation stage of the plant 2 reach a predetermined breakpoint, the process data at that point is and message information are stored in the plant reproduction history database 8 as plant information.

In addition, when an event at any trigger point occurs in the plant 2, that is, when a serious abnormality that causes the plant 2 to trip occurs, the sampling period of the process data input means 1, in this case,
Process data and message information sampled at 1 millisecond for 5 minutes before and after the occurrence timing are stored in the plant reproduction history database 8.

At the same time, plant information index data for searching the plant information is created and stored in the plant reproduction history database 8 and the index file 9.

In this way, plant information necessary for plant reproduction is stored in the plant reproduction history database 8 according to the operation of the plant 2.

Now, when the operator inputs a plant information reproduction request using the display input device 11 while the operation of the plant 2 is stopped, the reproduction request receiving means 12 refers to the index file 9 and performs the above-mentioned process. The plant reproduction menu database 13 is edited and generated, and based on the contents of the plant operation status information SPD~5PDi that constitutes the plant reproduction menu database 13, the plant operation that can be reproduced at that time is generated as the plant operation status information SPD~
A plant reproduction file selection screen in which the SPD files are listed in order of file number is displayed on the screen display section 22 of the display input device 11, as shown in FIG.

Furthermore, in this display, plant operations in which a plant trip has occurred are displayed in a different color so that they can be confirmed at a glance.

In addition, in the function selection section 23 of the display input device 11, "Plant reproduction", which constitutes an input means for inputting a request for reproduction of plant information, is displayed in the leftmost display area, and in the two rightmost display areas. "Screen forward" and "Screen backward" which constitute input means for displaying information that is omitted from the list display on the one-screen display section 22 are displayed. Further, above the double-sided division requesting section 24, there is an execution requesting section 25 that constitutes an input means for starting the plant information reproduction operation for the selected plant operation, and an input means for terminating the plant information reproduction operation. The termination request section 25 to be executed is displayed.

When such a plant reproduction file selection screen is displayed, the operator touches the display area of the desired plant operation to specify the plant operation whose plant information is to be reproduced, and touches the execution request section 24 to reproduce the plant information. command to start.

Thereby, the reproduction request accepting means 12 displays a plant reproduction point/speed selection screen as shown in No. 14@ on the screen of the display input device 11 in order to input a break point for reproducing the plant information and a reproduction speed. Display section 22
At the same time, the start date and start time information of the plant operation selected at that time is notified to the plant reproduction environment generating means 14.

As a result, the plant reproduction environment generating means 14 firstly
Plant control table reference data is extracted from the plant control table reference data area ARb of the plant reproduction history database 8 and output to the plant reproduction database 15.

Next, the change history index data up to the start date and time notified at that time is retrieved from the change history index data area AXh of the index file 9, the change history index data is referred to, and the history database for plant reproduction is The change history data is taken out from the change history data area ARh of No.8.

Then, the plant control table stored in the plant reproduction database 15 is updated using the change history data, and the contents of the plant # control table at the date and time when the reproduction start is specified are reproduced in the plant reproduction database 15.

From now on, the reproduction period display 21 of the title section 21
The period of plant operation specified at that time is displayed in b, and on the right side of “Plant reproduction” in the function selection section 23,
"" for selecting the screen type to be displayed on the screen display section 22
"System diagram display", "Trend graph", "Group trend", "Logic display", "Sequence congestion display", r
- Viewing service” and “Input point operation” are displayed in sequence. Note that these screen types match the types of display screens displayed by the control computer for monitoring the operation of the plant 2.

That is, in this case, the display function of the control computer is used as is.

Further, on the left side of "Screen forward" in the function selection section 23, "Alarm mode" and "Automation mode" for setting and inputting the display mode when reproducing the plan information are sequentially displayed.

Further, above the one-screen division requesting section 24, a reproduction speed specifying section 27 for selecting a reproduction mode is displayed.

This reproduction speed designation part 27 includes a temporary stop designation part 27a for temporarily stopping the update of the screen display content, and a reproduction speed designation part 27a for setting the update speed of the screen display content to 1150 times the column standard value.
150x speed specification section 27b, 1 for setting 175x
15x speed designation section 27c, 1x speed designation section 27d for designating 1x speed, and 5x speed designation section 27s for setting 5x speed.
, and a 50x speed specification section 27 for setting the speed to 50x
Consists of f.

Here, when the operator touches the seawater system start button at breakpoint number 2 on the screen display section 22, the display switches to a screen as shown in FIG. 15.

In this case, the breakpoint display section 21c displays the breakpoint specified at that time, "seawater system start," and the screen display section 22 remains blank to wait for the setting of the screen display mode. Become.

In addition, the information on the specified breakpoint is notified from the reproduction request receiving means 12 to the plant reproduction environment generation means 14, so that the plant reproduction environment generation means 14 can perform the operation after the specified breakpoint at the specified start date and time. A certain number of plant information index data are extracted from the plant information index data area AXp of the index file 9, and with reference to the plant information index data, the plant information data is read from the plant information data area ARp of the history database for plant reproduction 8. Plant information - Save in time save file 17.

When the operator touches the 3-split request section 24b of the screen split request section 24 from this screen, the touch input is output to the display screen switching means 18, and the display screen switching means 18 then changes the display screen to the plant information display section 19. Instructs a three-part division request.

Thereby, the plant information display means 19 is displayed as shown in FIG.
The three-split screen shown in C) is displayed on the screen display section 22.

From this state, the operator touches the upper left screen of the display screen, then touches the "logic display" of the function selection section 23, and then touches the upper right screen of the display screen, and then touches the "system display" of the function selection section 23. Touch "Diagram", touch the lower part of the display screen, and then touch "Graph" in the function selection section 23.
It is assumed that the user touches "Trend Graph" and then touches the 1x speed designation section 27d of the reproduction speed designation section 27.

As a result, the touch signals from the screen display section 22 and the function selection section 23 are output to the plant information display means 19 via the single display screen switching means 18, and the touch signals from the reproduction speed specifying section 27 are output to the reproduction request receiving means. It is output to the plant reproduction environment generating means 14 via 12.

Thereby, the plant reproduction environment generating means 14 extracts the plant information data stored in the plant information-time storage file 17 from the plant reproduction database at a timing according to the reproduction speed specified at that time. 15 plant current values are updated.

Furthermore, when one update value is retrieved from the plant information-time storage file 17 in this way, the plant reproduction environment generation means 14 outputs the update value at the next sampling timing of the latest plant information data stored in the plant information location storage file 17. The stored plant information data is determined based on the plant information index data stored in the index file 9, and the plant information data is read from the plant reproduction history database 8 and stored in the plant information-time storage file 17.

At the same time, the plant information display means 19 displays the specified display screen on the split screen specified at that time based on the contents of the plant reproduction database 15.

As a result, in this case, a monitoring screen as shown in FIG. 16 is displayed on the display screen 22 of the display input device m1ll.

At this time, the speed of plant information reproduction is 1 times the initially specified speed, and changes in the plant information during the specified period can be observed wt at the same speed.

The plant information display means 19 also controls the display of the break point display section 21c and the analysis mode display section 21d, and in this case, since the plant reproduction has progressed from the "seawater system startup" to the "vacuum rise" stage, , the display content of the breakpoint display section 21c has been changed from "Seawater system start" to "Vacuum rise".

Now, when the plant information is being reproduced in this way, the plant information data saved due to the plant trip is read out, and the first plant information data is taken out to the plant reproduction database 15. At this time, the plant reproduction environment generation means 14 notifies the analysis mode switching means 16 of the start of the analysis mode. In addition,
Plant information data caused by plant trips are
This can be known from the contents of the plant information index data.

As a result, the analysis mode switching means 16 notifies the plant information display means 19 of the start of the analysis mode, and displays the mode "analysis mode" on the plant analysis mode display section 21d of the title section 21 of the display input device 11.
Note that the display mode at this time is such that it can be clearly identified that the analysis mode has been entered.

On the other hand, the plant information in this case is the process input means 1
The images were obtained at 1 millisecond intervals, which is the sampling timing of
updates the plant information at 10 second intervals with 1x speed specified.

In other words, in this case, the reproduction speed is automatically reduced to 1/1.
Switch to 0000x speed.

Similarly, when 5x speed is specified.

The plant information is updated every 2 seconds, and when 500x speed is specified, the plant information is updated every 0.2 seconds, and when 175x speed is specified, the plant information is updated every 50 seconds. When updating is performed and 1150x speed is specified, the plant information is updated at 500 second intervals.

In this case, if the display content includes a time axis, the plant information display means 19 changes the display unit of the time axis to 1.
/ Change to 10000 times.

In this way, the 11-minute display from 5 minutes before the plant trip (in minutes) to 5 minutes after the plant trip occurs will be displayed in the first
As shown in FIG. 7, the operation is performed in a state magnified 10,000 times in time, so the operator can observe changes in the state of each part of the plant 2 in detail.

Further, when the reproduction of the plant information data collected starting from the plant trip is completed, the plant reproduction environment generating means 14 notifies the analysis mode switching means 16 to that effect.

Thereby, the analysis mode switching means 16 notifies the plant information display means 19 of this fact.

Clear the display on the analysis mode display section 21d. Moreover, the plant information display means 19 returns the display unit of the time axis to its original state.

Therefore, from then on, a normal plant information reproduction screen is displayed on the display input device 11.

By the way, when the plant information is being reproduced using the plant information reproduction screen in this way, the operator can change the reproduction speed as appropriate.

In that case, the operator first touches the temporary stop section 27a of the reproduction speed request section 27.

As a result, when the reproduction request reception means 12 inputs the touch information, it instructs the plant reproduction environment generation means 14 to pause, and thereby the plant reproduction environment generation means 14 updates the process current value to the plant reproduction database 15. Temporarily stop updates.

Further, the reproduction request receiving means 12 temporarily changes the display screen of the display input device Mll to the content shown in FIG. 18, and displays the breakpoint number input request section 28.

As a result, when the operator wishes to change the breakpoint to be displayed, the operator inputs the desired breakpoint number using the key manual means (not shown) of the display input device 11, and then inputs the desired breakpoint number from the reproduction speed requesting section 27. Enter the speed setting.

This operation information is input to the reproduction request receiving means 12, and is further notified to the plant reproduction environment generating means 14.

If a breakpoint has not been set and input at that time, the plant reproduction environment generation means 14 uses the plant information data stored in the plant information-time storage file 17 to create a new breakpoint. The current process values are updated to the plant reproduction database 15 in the same manner as described above at a timing corresponding to the reproduction speed.

Furthermore, if a breakpoint has been set and input, the plant reproduction environment generation means 14 erases the stored contents of the plant information-time storage file 17, and the plant information index data after the newly notified breakpoint. Plant information index data area AXp of index file 9
A certain number of plants are extracted from the plant information index data, and the plant information data is read from the plant information data area ARp of the plant reproduction history database 8.

The plant information is saved in the time save file 17, and thereafter the same processing as described above is performed.

In this way, the breakpoints to be displayed can be arbitrarily switched during plant information reproduction, making it possible to perform efficient plant diagnosis.

Furthermore, since the speed of plant information reproduction can be arbitrarily switched, it is easier to judge the situation in more detail during reproduction.

Further, the operator can also arbitrarily switch the display screen displayed on the screen display section 22.

As described above, in this embodiment, when a serious plant abnormality that leads to a plant trip occurs, it is possible to reproduce the plant information for 11 minutes before and after the occurrence of the trip. Changes in the state of plant 2 can be observed in detail.

In addition, in addition to the limited time before and after a trip occurs, we collect and save process data from plant startup to shutdown, and use this data to reproduce plant information, so we can detect any occurrences that occur before a trip occurs. It is possible to observe the signs that a trip occurred, and also to observe changes after a trip occurs.

Furthermore, since plant information is reproduced using historical data, it is possible to switch the reproduction screen to as many monitoring screens as possible while plant information reproduction is paused. It is possible to analyze the plant status from multiple angles, and it is also possible to investigate the causes of abnormalities while tracking actual instantaneous changes in the plant status.

Generally, abnormalities that lead to trips do not occur very often, but in this example, operators can experience the occurrence of trips using the screen they use for plant monitoring. This is convenient because the learning can be carried out by the operators.

In the above description, the details of the automated plant operation using the plant control table have been omitted since it is the same as the conventional device.

By the way, in the above-described embodiment, the present invention is applied to a plant diagnostic device for a thermal power plant, but the present invention can also be applied to other industrial plants.

Furthermore, in the embodiments described above, a touch input device is used as the input device of the display input device, but the present invention can also be applied to cases where other input devices are used.

[Effects of the Invention] As described above, according to the present invention, all points of process data from the plant are sampled as historical data for reproducing the plant, and the plant control table means, which serves as a reference for reproducing the plant, is sampled. Since historical information is stored, the operator can reproduce plant information at any point at any desired time.

In addition, historical data is sampled at time intervals depending on the plant status, and is also sampled continuously over a certain period of time before and after an event occurs, making it possible to keep all the information necessary for plant diagnosis. , it also has the effect of being able to properly perform plant diagnosis.

In addition, since the operator can arbitrarily specify the display contents of the plant information reproduction display, a detailed study can be carried out at the time of plant diagnosis, and the plant diagnosis can be carried out more effectively.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a plant diagnosis device according to an embodiment of the present invention, FIG. 2(a) is a schematic diagram showing an example of the storage contents of a process data storage buffer, and FIG. 2(b) is a data storage area. FIG. 3(a) is a schematic diagram showing an example of the message information storage buffer. FIG. 3(b) is a schematic diagram showing an example of the message information storage area. FIG. 4 is a schematic diagram showing an example of the message information storage area. FIG. 5 is a schematic diagram showing an example of a trigger point table stored in the timing determination means; FIG. 5 is a schematic diagram showing an example of a break point; FIG. Figure (b
) is a schematic diagram illustrating type 1 storage command information, and the same figure (
c) is a schematic diagram illustrating type 1 storage command information, Figure (d) is a schematic diagram illustrating type 1 storage command information, and Fig. 7 is a schematic diagram illustrating the storage contents of the history database for plant reproduction. , FIG. 8 is a schematic diagram showing an example of plant information index data, FIG. 9 is a schematic diagram showing an example of change history index data, and FIG. 11(a) is a schematic diagram showing an example of the plant reproduction menu database. Figure 12 (b) is a schematic diagram showing an example of plant operation status information, Figure 12 (a) is a schematic diagram showing the basic configuration of the screen of the display input device when reproducing plant information, and Figure 12 (b) is a schematic diagram showing the basic configuration of the screen of the display input device when reproducing plant information. A schematic diagram showing an example screen of
Figure (c) is a schematic diagram showing an example of the screen when the screen is divided into three parts, and figure (d)
) is a schematic diagram showing an example of the screen when divided into four parts, Fig. 13 is a schematic diagram showing an example of the plant reproduction file selection screen, Fig. 14 is a schematic diagram showing an example of the plant reproduction point / speed selection screen, and Fig. 15 is a schematic diagram showing an example of the screen when selecting the screen display mode, Fig. 16 is a schematic diagram showing an example of the screen for reproducing plant information, Fig. 17 is a schematic diagram showing an example of the screen in analysis mode, and Fig. 18 is the reproduction speed. FIG. 2 is a schematic diagram showing an example of a screen when switching. DESCRIPTION OF SYMBOLS 1... Process data input means, 3... Process data storage buffer, 4... Plant control table, 5
Message information buffer, 6 Storage timing determining means, 7 Plant reproduction history database creation means, 8 Plant reproduction history database,
9... Index file, 10... Plant control table storage means, 11... Display input device, 12... Reproduction request receiving means, 13... Plant reproduction menu database, 14... Plant reproduction environment Generation means, 15.
...Plant reproduction database, 16.Analysis mode switching means, 17.Plant information-time storage file,
18...Display screen switching means, 19...Plant information display means, 21...Title section, 22...Screen display section, 23...Function selection section, 24...Screen division request section, 27... Reproduction speed request section. TBT 4 Figure 2 (b) Figure 3 (Basic format) c'; Fib 1 c type 2) c type 3) Figure 6 Figure 10 Figure 11 0 °0 Procedural amendment document Ceremony) May 8, 1990

Claims (1)

[Claims] A process input means for inputting process data from the plant at all points; a process data storage buffer for storing the latest process data for a certain period of time input from the process input means; and a process data storage buffer for automatically operating the plant. a plant control table means that stores various information and outputs plant operation information to the plant based on the process data input from the process input means, and also outputs message information according to the operation status;
a message information storage buffer for storing the latest message information output from the plant information table means for a certain period; a history data storage means for storing history data for reproducing the plant information; storage timing determination means for storing information stored in a message information storage buffer in the history data storage means as plant history data at the occurrence of a preset event and at a predetermined period; and process control for controlling the contents and changes in the process control table means. A plant control table storage means for storing table history data in the history data storage means; an interactive display input device for inputting a plant information reproduction request and displaying the reproduced plant information; When a plant information reproduction request is input, the process control table history data up to the specified reproduction request time is retrieved from the historical data storage means to form a plant reproduction base, and the plant history data for a predetermined period before and after the reproduction request specified time is retrieved from the historical data storage means. Data is retrieved at intervals according to the contents of the reproduction request, and plant data and messages for a predetermined period before and after the specified time of the reproduction request are displayed on the interactive display input device based on the retrieved plant history data and the plant reproduction platform. A plant information reproduction device characterized by comprising display control means.