JPS63261484A - Plant data collection and display device - Google Patents

Abstract

PURPOSE:To properly display specified plant data by sequentially storing the initial information of a data base and the changed contents of the data base and reconstituting the data base on a specified date. CONSTITUTION:A plant data collection part 11 inputs data from a power plant 2 by referring to the data base 12 and stores the input data in a collection data file 13. A data base initializing part 14 stores the state of the data base held before change in a data base change recording and storing file 15. A data base changing part 16 interacts with an operator console 3 to change the contents of the data base 12 and stores the changed contents in the file 15 through a data base changing/recording part 17. A restoration display/output part 18 restores the contents of the data base 12 from the file 15 based on of the specified data and reconstitutes the restored contents on a reference data base 19. In addition, the part 18 reads out commanded plant data from the file 13 and outputs the data on a display device 4 based on the data base 19.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention collects plant data from a plant, stores it in a plant data storage file, and stores various information regarding each plant data in a database. The present invention relates to a plant data collection and display device for storing plant data.

(Conventional technology) For example, in industrial plants such as thermal power plants, in addition to monitoring and controlling the plant, various data from each part of the plant are collected in order to obtain information for making decisions such as highly efficient plant operation and equipment operation management. Saved.

In this way, the number of input points for plant data to be collected and saved from the plant is dozens, and accumulating all the information about that plant data will result in a high load and affect the original plant monitoring and control. collects and stores the sampling date, identification information, and data values of the plant data as plant data.

In addition, various information regarding each plant data,
For example, the installation position, sensor type, input range, unit, etc. are stored in separate databases.

When accessing desired plant data, appropriate display is performed by referring to the stored contents of this database.

By the way, during the period when the plant is operating.

The type of sensor that inputs plant data may change or the input point may change, and with these changes, the contents of the database that stores various information regarding plant data will change. .

(Problem that the invention attempts to solve) In this way, the contents of the database are updated.

If changes such as modification or deletion are made, the plant data saved before the change cannot be properly accessed and cannot be played back and displayed correctly.

For example, when a sensor used at a certain input point is changed to one with a different range, the range of plant data after that is different from the range of plant data obtained before the change.

Therefore, when the plant data obtained before the sensor change is accessed, the plant data is displayed in the range after the sensor change, and the displayed content becomes strange.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a plant data collection and display device that can appropriately display plant data even when the contents of a database are changed.

[Configuration of the Invention (Means for Solving the Problems)] The present invention sequentially saves the initial information of the database and the contents of changes, and reconstructs the database as of a specified date, thereby reconfiguring the database at a specified plant. It displays data accurately.

(Operation) Therefore, since the database as of the specified date can be referred to, the specified plant data can be appropriately accessed and displayed.

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

FIG. 1 shows a plant data collection and display device according to an embodiment of the present invention.

In the plant data collection and display device 1, the plant data collection unit 11 inputs plant data from the power generation plant 2 at a predetermined timing, and the data input is performed by referring to the stored contents of the database 12. The collected plant data is stored in the collected data file 13 as appropriate.

The database initial value setting section 14 stores the state of the database 12 before the change set in the plant data collection and display device 1 in the database change record storage file 15.

The database changing unit 16 interacts with the operator console 3 to change the contents of the database 12. In addition, the content of the change is recorded in the database change recording section 17.
The database change recording unit 17 formats the information into database change information (described later) in a predetermined format and stores it in the database change record storage file 15 as appropriate.

The restored display output unit 18 restores the contents of the database 12 as of the requested date from the stored contents of the database change record storage file 15 based on the date instructed by the operator console 3, and restores the contents of the database 12 as of the requested date to the reference database 19.
Reconfigure. Then, the plant data commanded from the operator console 3 at that time is read out from the collected data storage file 13, display information is formed based on the contents of the reference database 19, and is output to the display device 4.

On the display W14, plant data commanded by the operator is displayed by a CRT display e41 and a printing device 42 including a typewriter (Tv) and a line printer (LP).

As shown in FIG. 2(a), the database 12 includes an analog input point information input table TBA that stores various information (described later) regarding each plant data (analog data), a conversion formula for units of analog data, etc. A conversion information table TBC1 that stores information such as , and a limit information table TBR that stores various limit values applied to analog data are stored.

The analog input point information input table TBA is shown in the same figure (b).
As shown in , following the table name at the top, analog input point information regarding each analog data is arranged in sequence.

In the conversion information table TBC, as shown in FIG. 3(c), each conversion information is sequentially arranged following the first table name.

The limit information table TBR is formed by arranging each limit information following the table name at the beginning, as shown in FIG. 2(d).

An example of analog input point information is shown in FIG.

In the same figure, point identification information PID is for identifying an analog input point (that is, analog data), and consists of, for example, a two-digit alphabet and a three-digit number.

For example, the controller number CNT, group number GP, and position number PS are based on internal identification information IDD for internally identifying analog data.

It is specified as follows.

CNT = (IDD/256) GP = (IDD-(CNT umbrella 256))/l1lP
S = (IDD-(CNT・256))-(GP*8
) The abbreviation ABR is a name for identifying analog data. However, the number of digits is limited to 1, for example, 20 digits.

The alarm-related group number ANO indicates the number of the alarm lamps that light up among the alarm lamps attached to the monitoring device that monitors the power generation plant 2 when this analog data is abnormal.

The number of digits below the decimal point FN is the number of significant digits below the decimal point of the information input as analog data.

Base class CLS defines the basic sampling period of analog data.

The connection type CPU is used to identify from which processor this analog data has been input, for example, when a plurality of processors (CPUs) exist due to a hierarchical configuration of the system.

The pseudo analog flag PSU indicates that this analog data is
This is to identify whether the data is pseudo analog data formed by applying a predetermined calculation formula to data input from multiple points.

The sensor type SNS indicates the type of sensor that inputs analog data.

Gain GAIN is a coefficient for appropriately setting the full range of analog data.

The input signal range RL is for setting a limit value of analog data.

The alarm condition ASUP indicates a condition when other conditions must be satisfied in order to determine that this analog data is an abnormal value.

The conversion index CNV indicates at which position in the conversion information table TBC conversion information storing a conversion formula for analog data to a display unit, etc. is stored.

The limit number LMT indicates at which position in the limit information table TBR the limit information for setting the limit value of analog data is stored.

The limit number LMT indicates the number of limit information.

In addition, when a plurality of limit information is set for one analog data, the plurality of limit information are stored consecutively in the limit information table TBH.

An example of the contents of the database change record storage file 15 is shown in FIG. 4(a).

The database change record storage file 15 includes database initial information, which is information at the time the database 12 was initialized, and database change information, which indicates changes to the database 12. This database change information is accumulated every time the contents of the database 12 are changed.

As shown in FIG. 3B, the database initial information consists of the date when the database initial information was stored and the analog input point information input table in the database 12 at that time.

An example of the database change information is shown in FIG. 3(c).

In this case, point identification information PID and number of decimal places F
Two items of N have been changed.

The database change information includes the change date DAI, which indicates the year, month, and day of the change, the number of words, VDN, which indicates the length of the database change information, the table name NMT, which indicates the table that includes the change target, and the beginning of the table that includes the change target. It consists of change information PTX that shows the distance (number of words or number of bytes) from to the change target, pre-change table contents COB that shows the contents before change, and table contents after change COA that shows the contents after change. .

In this case, since there are two change items, the table content COB before change contains the content type l that indicates that the change item is point identification information PID, the point identification information PID before change, and the change item below the decimal point. Content type 2 that the number of digits is FN and the number of digits after the decimal point F before change
Consists of N.

In addition, the changed table content COA includes the content type 1, which indicates that the changed item is point identification information PID, the changed point identification information PID, and the changed item, which indicates that the number of digits after the decimal point FN. It consists of the content type 2 and the number of digits below the decimal point after the change FN.

An example of collected data stored in the collected data storage file 13 is shown in FIG. In this case, data collection is performed for each group according to the state of the power generation plant 2 (for example, starting, stopping, etc.).

The collected data is collected by the collection date DA2. It consists of a group name NMG for identifying the group, and each plant data DTP constituting the group. Further, each plant data DTP consists of point identification information PID and its input value INP.

Next, an example of the processing of the restored display output unit 18 when a display command is output from the operator console 3 is shown in FIG.
Note that the point identification information PID for which display is requested and the date for which display is requested are added to the display command.

The restored display output unit 18 first determines whether the display command is the first one (determination 101).

If the result of determination 101 is YES, the contents of the reference database 19 are initialized to the contents of the analog input point information input table of the database initial information stored in the database change record storage file 15 (process 102). Then, the date added to the reference database 19 (hereinafter referred to as reference database date) is initialized to the date of the database initial information stored in the database change record storage file 15 (process 103).

Next, all database update information included in the period from the reference database date to the date requested to be displayed by the 1 display command (hereinafter referred to as request date) is read from the database change record storage file 15, and the database update information is sorted in date order. , executes database modification process 1 (process 104) for changing the contents of the reference database according to the contents.

Further, if the result of judgment 101 is No, it is checked whether the request date is earlier than the reference database date (determination 105).

If the result of this judgment 105 is NO, process 10
Execute 4.

If the result of the judgment 105 is YES, the database update information included in the period from the request date to the reference database date is stored in the database change record storage file 15.
Database modification processing 2 (processing 106) is executed in which the contents of the reference database are read out in reverse order of the date of the database update information and the contents of the reference database are changed according to the contents.

When the content 19 of the reference database is changed to the state of the requested date as shown in step 107), the reference database date is updated to the requested date (step 107), and among the plant data requested to be displayed by the display command, those of the requested date are It is read from the collected data storage file 13 (processing 108).

Then, display information is formed based on the read plant data and analog input point information corresponding to the data stored in the reference database 19, and is output to the display device 4 (process 109).

As a result, the specified plant data on the date specified by the operator is appropriately displayed on the CR7 display device 41 and recorded and outputted from the printing device 42.

With the above configuration, when the plant data collection and display device 1 is connected to the power generation plant 2, the database initial value setting section 14 is activated by the plant data collection section 1, and the contents of the database 12 at that point are changed to the database initial information. It is stored in the database change record storage file 15 as .

From this point on, the plant data collection unit 11 inputs the plant data of the power generation plant 2 at a predetermined timing while referring to the contents of the database I2, and sequentially stores it in the collected data storage file 13 as collected data in the format described above. .

For example, when the sensor used for an analog input point is changed and it becomes necessary to change the corresponding analog input point information in the analog input point information input table TBA stored in the database 12, the operator , the operator console 3 notifies the database change unit 16 of this fact.

As a result, a database change screen in a predetermined format is displayed on the operator console 3. Then, while interacting with the screen, the operator
Operate as appropriate to update the changes to the database change section 16.
command.

When the operator's instruction operation is completed, the database changing section 16 updates the contents of the database 12 according to the changed contents, and notifies the database change recording section 17 of the changed contents.

Thereby, the database change recording unit 17 forms database change information in the format described above based on the notified change details, and stores it in the database change record storage file 15.

In this way, each time the database 12 is changed, database change information corresponding to the change is stored in the database change record storage file 15.

Then, when the operator commands the display of plant data from the operator console 3, the command is notified to the restored display output section 18. As a result, the restored display output unit 18 executes the above-described process to display the specified plant data on the date specified by the operator.
In addition to displaying on the CRT display device [141], the printing bag [42
Record and output.

In this way, the collection of plant data, the updating of the database 12, and the display output of the plant data are performed.

Incidentally, a large-capacity auxiliary storage device can be used as the collected data storage file 13 and the database change record storage file 15. Furthermore, if an optical disk device with replaceable media is used as the auxiliary storage device, an almost unlimited amount of data can be collected. Furthermore, in that case, by using a device having the same function as the restored display output section 18 described above, it is also possible to compare and analyze data at a plurality of power plants.

Furthermore, by outputting the stored contents of the database change record storage file 15 in chronological order, it is possible to grasp the status of changes to the database, and it is possible to identify change errors, omissions, etc.

[Effects of the Invention] As explained above, according to the present invention, the initial information of the database and the contents of changes to the database are sequentially saved, and the database as of the specified date is reconfigured. The effect is that the database can be properly referenced and specified plant data can be appropriately displayed.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a plant data collection and display device according to an embodiment of the present invention, FIG. 2(a) is a schematic diagram showing an example of the contents of a database, and FIG. 2(b) is an analog input point information input Schematic diagram showing an example of a table, same figure (C)
is a schematic diagram showing an example of a conversion information table, and FIG. 2(d) is a schematic diagram showing an example of a limit information table.
Figure 3 is a schematic diagram showing an example of analog input point information;
Figure (a) is a schematic diagram showing an example of the storage contents of a database change record storage file, Figure (b) is a schematic diagram showing an example of database initial information, and Figure (c) is a schematic diagram showing an example of database change information. FIG. 5 is a schematic diagram showing an example of data to be saved, and FIG. 6 is a flowchart showing an example of processing of the restored display output unit. 14... Database initial value setting unit, 15... Database change record storage file, 17... Database change record unit, 18... Restored display output unit, 19... Reference database. −＼Ya agent patent attorney crest 1) Makoto )−′ N1 Figure 2 Figure 3

Claims (1)

[Claims] In a plant data collection and display device that collects plant data from a plant and stores it in a plant data storage file and also stores various information regarding each plant data in a database, a database initial information storage that stores the contents of the database in an initial state. database change information storage means for sequentially storing changes when items in the means and database are changed;
The database at the time when the plant data designated for display is input is reconfigured based on the storage contents of the database initial information storage means and the database change information storage means, and the designated plant data is retrieved from the plant data storage file. a database restoration/display means for displaying and outputting the data based on the reconstructed database.