JP3926012B2 - Operation support method in non-steady state of plant, apparatus and recording medium - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an operation support method for supporting an operator using a computer, an apparatus thereof, and a recording medium for operation management in an unsteady state such as plant start-up, shutdown or operation mode, and raw material change.
[0002]
[Prior art]
In recent oil refining and petrochemical plants, two-year periodic repairs have become commonplace, and plant startup and shutdown opportunities have been reduced by half. Along with this, the opportunities for operator education and training are also decreasing. Furthermore, the tendency for the number of operators to decrease and the number of skilled operators to decrease has become more prominent. In consideration of such a current situation, obtaining a certain method capable of safely starting up and shutting down the plant is an important issue in managing the factory operation.
[0003]
In response to this, training simulators have been introduced for training and training of operators, but in situations where the number of operators is increasingly required, it is not possible to overload the operators and startup / shutdown At times, there is a need for a means that can assist the operator and ensure safety.
[0004]
For that purpose, assuming operation automation (1) For operation automation by creating on-screen operation flow sheets for the processes included in each operation in unsteady states such as plant startup, shutdown, and material switching Create a sequence program. In addition, various basic operation algorithms necessary for the unsteady state operation described above, for example, unit operations such as pump start-up, adjustment valve opening setting, level meter check, etc. are represented by icons, and these are connected according to the operation procedure on the screen. Thus, there has been proposed a driving support method for unsteady operation in which a sequence program is created, the status of each unit operation is displayed, and the created screen becomes an operation monitoring screen.
(2) Also, a method of adding an abnormality diagnosis function for each basic operation has been proposed.
[0005]
[Problems to be solved by the invention]
Although the above method has made it possible to reduce the burden on the operator when operating in an unsteady state, in a non-automated plant, a series of operation items necessary for operation in an unsteady state can be There is no means for effectively recognizing that the operation items have not been operated, are being operated, and that the operation has been completed. In addition, there is no means for easily creating and correcting a series of operation item lists and an end determination program for determining the end of each operation.
[0006]
Therefore, in view of the above-mentioned problems of the prior art, the object of the present invention is a state of no operation, operation, operation end, etc. for each operation required for operation in an unsteady state such as plant startup and shutdown. Is automatically displayed on the list or operation network with a color difference, etc., and when there is a judgment formula for confirming the end of the operation, the operation is input automatically by the operator. It is to support the operation of the operator by allowing the operator to easily grasp the status of each operation when the plant is in an unsteady state.
[0007]
Furthermore, an object of the present invention is to provide a method by which an operator can easily create and modify an end determination program without the need for programming that requires knowledge of advanced information processing technology or use of computer software that requires special usage. It is in.
[0008]
[Means for Solving the Problems]
In order to solve the above problems, the present invention processes the data taken from each device constituting the plant by a computer in real time, and displays the state of the plant on the screen, so that the operator in the unsteady state is displayed. In a method for supporting plant operation,
A process for reading a knowledge base in the form of a table consisting of a series of operation items required for operation management during operation in an unsteady state of the plant and an end judgment formula of the operation for each device, and the read knowledge Based on the end determination formula defined for each operation item, using processing that enables correction and addition of the operation item and end determination formula in the base, and operation data input online from each device An end determination program creation process that automatically creates an end determination program for each device that is not operated, in operation, and operation end, operation data and end time for each operation item during operation in an unsteady state An operation item list creation process for creating an operation item list for each device and an operation item list for an operation item for which no judgment formula is defined in the knowledge base. Input processing, drawing processing to read the contents of the operation item list and display it as a network diagram or operation item list, output processing to output the result of the drawing processing as a driving record slip, and any operation item An operation support method in an unsteady state of a plant capable of performing a process of displaying operation data and end determination results as standard in the past, current operation data and end determination results side by side, an apparatus thereof, and a recording medium therefor is there.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0010]
FIG. 1 is a block diagram schematically showing an embodiment of the driving support method of the present invention, schematically showing a configuration of information management and a function realizing means of a required program. FIG. 2 is a diagram showing a knowledge base in which operation items and end determination conditions in an unsteady state are described.
[0011]
As shown in FIG. 1, the plant operation support apparatus of the present invention is for creating an end determination program creating means 3 and an operation item list 6 for creating an end determination program 5 based on a knowledge base 1 inputted from the outside. An operation item list creation means 4 is provided to perform a driving support process in an unsteady state. Further, a knowledge base correction / addition means 8 inputted from the outside, a drawing processing means 7 for displaying a network diagram or an operation list on an input / output unit (CRT) 9 and a recording file 12 for recording and saving the contents of the operation item list 6. Is provided.
[0012]
Various types of driving support processing in the non-steady state in the driving support device are executed based on a program recorded in the recording medium 11.
[0013]
A tabular knowledge base necessary for operation management during operation in an unsteady state for each device includes a series of operation items and an end determination condition for the operation, as shown in FIG. The end determination condition includes an instrumentation TAG name and its determination formula necessary for determining the end of the operation. The knowledge base itself does not require any special software, and is created by using spread spreadsheet software.
[0014]
If there is a need to correct or add to the operation items and end judgment formulas in the read knowledge base, there is a correction / addition means 8 that can display in the same format as the knowledge base in the form of a table input from the outside. The end determination program 5 and the operation item list 6 are also corrected simultaneously with the end of the correction / addition work.
[0015]
Next, the operation in the embodiment will be described in detail.
[0016]
In the end determination program creating means 3 in the driving support device, based on the read external knowledge base 1 based on the program recorded in the recording medium 11, the state of the driving data of the operation for each operation item The end determination program 5 for determining whether the operation is completed, during the operation, or the completion of the operation is automatically created for each device. At the same time, the operation item list creation means 4 automatically creates an operation item list 6 for recording operation data and end time for each operation item during operation in an unsteady state for each device.
[0017]
For example, as shown in the flowchart of the processing procedure for determining the end of each operation item in FIG. 3, the end determination program 5 indicates the end of each operation for each operation item of each device required at the time of startup / shutdown. It is a program to judge. This program uses the operation data input online (steps 1 and 2), and determines whether the operation has not been performed, the operation has been completed, or the operation has been completed based on the termination determination formula defined for each operation item (step 3) -5), and recorded in a predetermined position of the operation item list (step 6). Further, for the operation items for which the judgment formula is not defined in the knowledge base, as shown in the flowchart of FIG. 3, the operator manually inputs the end time in the operation item list at the end of the operation (step 1). By doing so, it is recognized that the operation has ended (step 7), and is recorded in the operation item list together with the end time (step 6).
[0018]
Online data from each device is processed by the end determination program 5, and if the result ends, the end time is entered in the operation item in the operation item list 6. Further, if the operation item does not have an end determination formula, the operator inputs the end time in the same manner. If it is determined that the operation has not ended, the online data is processed again and determined.
[0019]
The drawing processing means 7 reads the contents of the operation item list 6 and displays them on the screen as a network diagram or operation item list. For example, as shown in FIG. 4 and FIG. It has a program for displaying on the network diagram or on the operation list table which state is in the middle or the end of the operation.
[0020]
FIG. 4 shows the large items in the operation items connected by a network. The large items in the operation items are not operated, are in operation, and the color is changed according to the end of the operation (for example, no operation) Is shown in red, and the completed operation is shown in blue.) It is also possible to make it easier for the operator to check. Whether the large item in the operation item is not operated, in operation, or operation ended, whether the detailed operation items in the large item are all unoperated, partially completed, or all completed Distinguished by.
[0021]
FIG. 5 is an operation list table showing the details of the operation items in the order of operations and showing the result of the operation end determination together with the end time when the detailed operation items are completed. The display method can be selected as appropriate, such as displaying the finished item in blue or bold so that it can be easily confirmed by the operator.
[0022]
In this way, by displaying the progress of operation at startup or shutdown for each device in the plant as a diagram or table, the operator can easily check the current operating position and prepare for the next operation. Can be performed quickly and accurately.
[0023]
FIG. 6 is a graph showing each data of the standard state and the current operation state. Specifically, it is a diagram in which a real-time temperature change of a certain device and a past temperature change of the device are simultaneously recorded. . By viewing such a display, the driver can determine whether or not the current operation is proceeding smoothly, and it is possible to change the operation condition so as to approach the standard operation as necessary. That is, as shown in FIG. 6, by displaying simultaneously the past time change and the current time change as the standard of the operation obtained from the recording file 12 for a specific operation item, the operation proceeds smoothly. The operator can recognize at a glance whether or not
[0024]
The recording file 12 is a database in which simulation result data assumed as past operation data or sound operation data is recorded as standard data. Further, the driving data at the time of healthy driving or the simulation result data assumed to be healthy driving data can be used for displaying on the screen together with the actual driving data. In order for the driver to know whether each operation item is within the expected range, the operation items that are considered necessary are data indicating the situation, for example, standards such as temperature, pressure, flow rate, and level of a specific device. By displaying data and actual driving data at the same time, it is very easy to judge whether driving conditions are appropriate.
[0025]
As a matter of course, DCS (Distributed Control System) includes temperature, pressure, flow rate, level, valve opening, on / off data such as switch controller / indicator etc. Needless to say, a function for collecting data in real time online, an input device such as a mouse or a keyboard, an output device such as a CRT for displaying the result, or a printer for printing are required.
[0026]
【The invention's effect】
As described above, according to the present invention, a series of operation items required for each device during operation in an unsteady state of a plant and an end determination formula for the operation are created as a knowledge base by tabular calculation. Then, an end determination program for automatically determining whether the operation item is not operated, during operation, or operation completion is created by inputting the operation support device in an unsteady state of the plant. Therefore, it is not necessary to create an operation item end determination program for each device.
[0027]
In addition, whether or not each unit operation is in progress during operation, non-steady state operation such as plant start-up, shutdown or operation mode, or material change is displayed on the screen, and whether the current status is normal. The current driving data is displayed at the same time as the past healthy driving data so that it can be easily discriminated, so it can be seen at a glance whether the operation is proceeding smoothly, and the burden of the operator's judgment thinking Can be reduced. Furthermore, since the end time is recorded for each operation item, it can be used as a reference for an unsteady state operation plan related to the next startup, shutdown or operation mode, raw material change, and the like.
[Brief description of the drawings]
FIG. 1 is a block diagram schematically showing an embodiment of a driving support method according to the present invention. FIG. 2 is a diagram showing a knowledge base in which operation items and end determination conditions in an unsteady state are described. FIG. 4 is a network diagram showing an example of the situation for each operation item. FIG. 5 is an operation list showing an example of the situation for each operation item. ] Graph showing each data of standard state and current operating state 【Explanation of symbols】
DESCRIPTION OF SYMBOLS 1 External knowledge base 2 Plant data 3 Completion determination program creation means 4 Operation item list eye creation means 5 Completion determination program 6 Operation item list 7 Drawing processing means 8 Correction / addition means 9 Input / output unit 10 Driving support device 11 Recording medium 12 Recording File

Claims (6)

In a method for supporting the plant operation of an operator in an unsteady state by processing data taken from each device constituting the plant in a computer in real time and displaying the state of the plant on a screen,
A process of reading a table-type knowledge base consisting of a series of operation items required for operation management during operation in an unsteady state of the plant and an end judgment formula of the operation from the outside for each device,
Processing that enables correction and addition of the operation item and the end determination formula in the read knowledge base;
An end determination program for determining the end of operation, during operation, and operation end based on the end determination formula defined for each operation item using the operation data input online from each device for each device Completion determination program creation process automatically created,
An operation item list creation process for creating an operation item list for each device for recording operation data and end time for each operation item during operation in an unsteady state;
A process in which the operator inputs the operation end to the operation item list for an operation item for which a judgment formula is not defined in the knowledge base;
A drawing process for reading the contents of the operation item list and displaying it as a network diagram or an operation item list;
An operation support method in an unsteady state of a plant, wherein an output process for outputting a result of the drawing process as an operation record slip is executed. 2. The operation support method in an unsteady state of a plant according to claim 1, wherein operation data and end determination results, which are past standards of any operation item, and current operation data and end determination results are displayed side by side. . Storage means for reading a table-type knowledge base consisting of a series of operation items required for operation management during operation in an unsteady state of the plant and an end determination formula of the operation from the outside for each device,
Correction / addition means for enabling correction and addition of the operation item and the end determination formula in the read knowledge base,
An end determination program for determining the end of operation, during operation, and operation end based on the end determination formula defined for each operation item using the operation data input online from each device for each device Means for automatically creating an end determination program,
An operation item list creation means for creating an operation item list for each operation item and recording an end time for each operation item during operation in an unsteady state;
Means for the operator to input the operation end to the operation item list for the operation item for which the judgment formula is not defined in the knowledge base;
Drawing processing means for reading the contents of the operation item list and displaying them as a network diagram or operation item list;
A driving support apparatus in an unsteady state, comprising: output means for outputting a result of the drawing process as a driving record slip. Multiple recording files that record the contents of the operation item list are provided so that multiple past operation item lists can be read as achievements. Operation data and end judgment results that are past standards for any operation item in the operation item list 4. The driving support apparatus in an unsteady state according to claim 3, wherein the drawing processing function displays the current driving data and the end determination result side by side. A process for reading a table-based knowledge base consisting of a series of operation items required for operation management during operation in an unsteady state of the plant and a termination judgment formula for the operation from the outside for each device,
Processing that enables correction and addition of the operation item and the end determination formula in the read knowledge base;
An end determination program for determining the end of operation, during operation, and operation end based on the end determination formula defined for each operation item using the operation data input online from each device for each device End determination program creation process to create automatically, operation item list creation process to create an operation item list for each device to record the operation data and end time for each operation item during operation in the unsteady state,
A process in which the operator inputs the operation end to the operation item list for an operation item for which a judgment formula is not defined in the knowledge base;
A drawing process for reading the contents of the operation item list and displaying it as a network diagram or operation item list;
A computer-readable recording medium storing a program for causing a computer to execute an output process for outputting a result of the drawing process as an operation record slip. A computer-readable recording medium storing a program for causing a computer to execute a process for displaying operation data and end determination results, which are past standards of any operation item, and current operation data and end determination results side by side. 5. The recording medium according to 5.

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