JPH11191007A - Method and device for supporting plant operation in unsteady state and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To support operators so that they can easily grasp states of respective operations when a plant is in an unsteady state. SOLUTION: Intelligence bases 1 in a tabular form consisting of a series of operation items needed for operation management during an unsteady state of a plant and of end decision formulas for the operation are read in from the outside for each device, and are used to automatically generate an end decision programs 5 to determine that the devices are not in operation or in operation or have finished operation for each device from plant on-line data according to the end decision formulas determined by the above operation items. Further, operation item lists 6 wherein operation data and end time by the operation items during the unsteady state are recorded are generated by the devices, and while the plant is in operation, the end decision programs 5 are run to read the contents of the operation items lists and display them as a network diagram or the operation item lists 6 through a drawing processing and an output processing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation support method for assisting an operator using a computer with respect to operation control in an unsteady state such as start-up, shutdown or operation mode of a plant, change of raw material, and the like. The present invention relates to an apparatus and a recording medium.

[0002]

2. Description of the Related Art In recent petroleum refining and petrochemical plants, two-year periodic repairs are common, and the chances of starting up and shutting down the plant have been reduced by half. As a result, opportunities for operator training and training have also decreased. Furthermore, the tendency for the number of operators to decrease and the number of skilled operators to decrease has been more remarkable. In view of such a current situation, it is an important issue in management of factory operation to obtain some means for safely starting up and shutting down a plant.

In order to cope with this, training simulators have been introduced for training of operators, but in a situation where the number of operators is increasingly required, the operator cannot be overburdened. There is a need for measures that can assist operators during startup and shutdown to ensure safety.

[0004] For that purpose, it is assumed that the operation is automated. (1) The operation is performed by creating an operation flow sheet of a process included in each operation in an unsteady state such as plant start-up, shutdown and material switching on a screen. Create a sequence program for automation. Furthermore, the algorithm of various basic operations required for the above-mentioned unsteady state operation, for example, unit operations such as pump start-up, adjustment valve opening setting, level meter check, etc. are represented by icons, which are connected on the screen according to the operation manual. There has been proposed a driving support method for an unsteady operation in which a sequence program is created, the status of each unit operation is displayed, and the created screen is an operation monitoring screen. (2) In addition, a method in which an abnormality diagnosis function of each basic operation is added has been proposed.

[0005]

The above-mentioned method makes it possible to reduce the burden on the operator during operation in an unsteady state. However, in a non-automated plant, the operation during the unsteady state is not possible. A series of necessary operation items were provided to the operator, and there was no means for effectively recognizing the operator of non-operation, operation, and end of each operation item. Further, there is no means for easily creating and modifying a list of a series of operation items and an end determination program for determining the end of each operation.

In view of the above-mentioned problems of the prior art, it is an object of the present invention to provide an unoperated, in-operation, and end-of-operation for each operation required during an unsteady state operation such as start-up / shutdown of a plant. Status is automatically displayed on a list or network of operations with color differences, etc., and when the operation is completed, it is automatically input if there is a judgment formula to confirm the end of the operation, otherwise, the operator inputs it Accordingly, it is an object of the present invention to support the operation of the operator by allowing the operator to easily grasp the status of each operation during the unsteady state of the plant.

Further, an object of the present invention is to allow an operator to easily create and modify an end determination program without the need for programming that requires advanced knowledge of information processing technology or the use of computer software that requires special usage. In providing the method.

[0008]

According to the present invention, in order to solve the above-mentioned problems, data taken from each device constituting a plant is processed by a computer in real time.
In a method for assisting an operator in plant operation in an unsteady state by displaying the state of the plant on a screen, a series of operation items required for operation management during operation of the plant in an unsteady state and the operation A process of externally reading a table-based knowledge base composed of end determination expressions for each device, a process of enabling correction and addition of operation items and an end determination expression in the read knowledge base, and Using operation data input online, an end determination program is automatically created for each device based on the end determination formula defined for each operation item to determine whether it is not operating, during operation, or operation completion. And an operation item list for recording operation data and an end time for each operation item during operation in an unsteady state for each device. An item list creation process, a process in which an operator inputs the end of the operation to an operation item list for an operation item for which a judgment formula is not defined in the knowledge base, a process of reading the contents of the operation item list, and performing a network diagram or operation. Drawing processing to be displayed as an item list, output processing to output the result of the drawing processing as a driving record slip, and past standard operation data and end determination result of any operation item and current operation data and end determination An operation support method in a non-stationary state of a plant capable of performing a process of displaying results in parallel, an apparatus therefor, and a recording medium therefor.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram schematically showing an embodiment of a driving support method according to the present invention, and schematically shows 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.

As shown in FIG. 1, the plant operation support apparatus of the present invention creates an end determination program creating means 3 and an operation item list 6 for creating an end determination program 5 based on an externally input knowledge base 1. And an operation item list creating means 4 for performing driving support processing in an unsteady state. A knowledge base correction / addition means 8 input from outside; a drawing processing means 7 for displaying a network diagram or an operation list on an input / output unit (CRT) 9
A recording file 12 for recording and storing the contents of the operation item list 6 is provided.

Various processes of the driving support in the unsteady state in the driving support device are executed based on a program recorded on the recording medium 11.

As shown in FIG. 2, a tabular knowledge base required for operation management during operation in an unsteady state for each device includes a series of operation items and a condition for determining the end of the operation. The end determination condition is composed of an instrumentation TAG name necessary for determining the end of the operation and a determination formula thereof. The knowledge base itself does not require special software and is created by spreadsheet software that is widely used.

When it is necessary to modify or add to the operation items and the end judgment formula in the read knowledge base, there is a modification / addition means 8 capable of displaying the same format as the tabular knowledge base inputted from the outside. Therefore, the modification and addition can be easily performed, and the completion determination program 5 and the operation item list 6 are also modified at the same time when the modification / addition work is completed.

Next, the operation of the embodiment will be described in detail.

The end determination program creating means 3 in the driving support apparatus performs the operation of the operation for each operation item on the basis of the read external knowledge base 1 based on the program recorded on the recording medium 11. An end determination program 5 for automatically determining, based on the state of the data, a non-operation, an operation, and an operation completion is automatically created for each device. At the same time, an operation item list 6 for recording operation data and end time of each operation item during operation in an unsteady state by the operation item list creating means 4.
Are automatically created for each device.

The end determination program 5 is, for example, as shown in FIG.
As shown in the flowchart showing the processing procedure for determining the end of each operation item, this program determines the end of each operation for each operation item of each device required at startup / shutdown. With this program,
Using the operation data inputted online (steps 1 and 2), it is determined whether the operation is not performed, the operation is being performed, or the operation is completed based on the termination determination formula defined for each operation item (steps 3 to 5). It is recorded at a predetermined position in the operation item list (step 6). For the operation items in the knowledge base for which the determination formula is not determined, as shown in the flowchart of FIG. 3, the operator manually inputs the end time to the operation item list at the end of the operation (step 1). Then, it is recognized that the operation has been completed (step 7), and is recorded in the operation item list together with the completion time (step 6).

The online data from each device is processed by the end determination program 5, and if the result is completed, the end time is entered in the item of the operation in the operation item list 6. If the operation item does not have an end determination formula, the operator similarly inputs the end time. If it is determined that the operation has not been completed, the online data is processed again to make a determination.

The drawing processing means 7 reads the contents of the operation item list 6 and displays the contents on the screen as a network diagram or an operation item list. For example, as shown in FIGS. It has a program for displaying on the network diagram or in the operation list table whether the state is the operation, the operation, or the operation end.

FIG. 4 shows the large items in the operation items connected by a network, and the colors of the large items in the operation items are changed according to the non-operation, the operation, and the end of the operation (for example, , Not operated is indicated by red, and operation completed is indicated by blue.) It is also possible to make it easy for the operator to confirm. Whether the large item in the operation item is unoperated, in operation, or the operation ended is whether all the detailed operation items in the large item are not operated, partially completed, or all completed. Are distinguished by

FIG. 5 is an operation list table showing the details of the operation items in the order of operation, and showing the judgment result of the operation end together with the end time when the detailed operation item ends. The display method can be selected as appropriate, such as displaying the completed items in blue or bold to make it easier for the operator to confirm.

In this way, by displaying the progress of the operation operation at the time of startup or shutdown for each device of the plant as a diagram or a table, the operator can easily confirm the current operation position status, and Preparation for operation can be performed quickly and accurately.

FIG. 6 is a graph showing each data of the standard state and the current operation state. Specifically, a real-time temperature change of a certain apparatus and a past standard temperature change of the apparatus are simultaneously recorded. FIG. By looking at such a display, the driver can determine whether or not the current operation is proceeding smoothly, and it is possible to change the operation conditions so as to approach the standard operation as needed. That is, as shown in FIG. 6, by simultaneously displaying the past aging change and the current aging change which are the standard of the operation obtained from the recording file 12 for a specific operation item, the operation proceeds smoothly. It is possible for the operator to recognize at a glance whether or not the vehicle is operating.

The recording file 12 is a database in which past operation data or simulation result data assumed to be sound operation data is recorded as standard data. In addition, the operation data at the time of normal operation or the simulation result data assumed to be normal operation data,
It can be used to display on the screen along with actual driving data. In order for the driver to know whether or not each operation item is within the expected range, data indicating the status of the operation item that is deemed necessary, for example, standard values such as temperature, pressure, flow rate, level of specific equipment, etc. By displaying the data and the actual driving data at the same time, it becomes extremely easy to judge the suitability of the driving situation.

Of course, the temperature, pressure, flow rate, level, valve opening,
A function to collect on / off data such as switch controllers and indicators from DCS (Distributed Control System) online and in real time, an input device such as a mouse or keyboard, and an output device such as a CRT for displaying the results Or, needless to say, a printer for printing is required.

[0026]

As described above, according to the present invention,
A series of operation items required for each device during operation in an unsteady state of the plant and a formula for determining the end of the operation are created as a knowledge base in a tabular form, and the operation support device in the unsteady state of the plant is created. By inputting, an end determination program for automatically determining that the operation item is not operated, is being operated, or has been completed is created. Therefore, there is no need to create an operation item end determination program for each device.

[0027] Further, during the unsteady state operation such as start-up, shutdown or operation mode of the plant, change of the raw material, etc., each unit operation is displayed on the screen as not operating, operating, or ending the operation. The current operation data is displayed at the same time as the past sound operation data so that it is easy to determine whether the operation is normal or not. The burden of thinking can be reduced. Further, since the end time is recorded for each operation item, it can be used as a reference for an unsteady state operation plan relating to the next start-up, shutdown or operation mode, change of raw material, 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 termination determination conditions in an unsteady state are described.

FIG. 3 is a flowchart illustrating a processing procedure of an end determination performed for each operation item;

FIG. 4 is a network diagram showing an example of the status of each operation item;

FIG. 5 is an example operation list showing the status of each operation item

FIG. 6 is a graph showing data of a standard state and a current operation state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 External knowledge base 2 Plant data 3 Termination judgment program creation means 4 Operation item list creation means 5 Termination judgment 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

Continued on the front page (72) Inventor Masahiko Nakagawa 4 Towada, Kamisu-cho, Kashima-gun, Ibaraki Pref. Kashima Refinery Kashima Refinery (72) Inventor Bunichi Oka 2-8-1 Akanehama, Narashino-shi, Chiba Toyo Engineering Inside the corporation

Claims (6)

[Claims] 1. A method of processing data taken from each device constituting a plant in real time by a computer and displaying the state of the plant on a screen to support an operator in plant operation in an unsteady state, A process of externally reading a knowledge base in a table format comprising a series of operation items required for operation management during operation of the plant in an unsteady state and an end determination formula of the operation for each device, and the read knowledge A process that enables correction and addition of an operation item and an end determination formula in the base, and operation data input online from each device, based on the end determination formula determined for each of the above operation items An end determination program creation process for automatically creating an end determination program for each device, which determines whether the operation has not been performed, is being operated, or has been terminated. Item list creation processing to create an operation item list for each device that records the operation data and end time for each operation item during operation in the state of operation, and to the operation items for which the judgment formula is not defined in the knowledge base In response, the operator inputs the end of the operation to the operation item list, a drawing process of reading the contents of the operation item list and displaying it as a network diagram or an operation item list, and outputting a result of the drawing process as an operation record slip. An operation support method in an unsteady state of a plant, characterized by executing an output process. 2. The non-stationary operation of a plant according to claim 1, wherein the past operation data and end judgment result of the arbitrary operation item and the current operation data and end judgment result are displayed side by side. Driving support method in the state. 3. A storage means for externally reading a table-based knowledge base comprising a series of operation items required for operation management during operation of a plant in an unsteady state and an end judgment formula of the operation for each device. Correction / addition means for enabling correction and addition of operation items and an end determination formula in the read knowledge base; and using the operation data input online from each of the devices, An end determination program creating means for automatically creating an end determination program for determining the non-operation, operation, and end of operation based on the end determination formula defined in each device, and an end determination program when operating in an unsteady state. An operation item list creation unit that creates an operation item list for recording operation data and an end time for each operation item for each device; and for an operation item for which a judgment formula is not defined in the knowledge base. Means for the transfer to input the end of the operation to the operation item list; drawing processing means for reading the contents of the operation item list and displaying it as a network diagram or operation item list; and outputting the result of the drawing processing as an operation record slip. A driving assistance device in an unsteady state, comprising: an output unit. 4. A plurality of recording files for recording the contents of an operation item list are provided so that a plurality of past operation item lists can be read as results, and a past standard operation of any operation item in the operation item list is performed. 4. The driving support device in an unsteady state according to claim 3, wherein the drawing processing function displays data and an end determination result together with current driving data and an end determination result. 5. A process for externally reading a knowledge base in a table format comprising a series of operation items required for operation management during operation of a plant in an unsteady state and an end determination formula of the operation for each device, A process that enables correction and addition of the operation items and the end determination formula in the read knowledge base, and the end determination determined for each of the above operation items using operation data input online from each device. An end determination program creating process for automatically creating, for each device, an end determination program that determines whether the device is not operated, being operated, or having completed the operation based on the formula, operating data for each operation item during operation in an unsteady state, and An operation item list creation process for creating an operation item list for recording an end time for each device, and an operator operating the operation end for an operation item for which a determination formula is not defined in the knowledge base. A program for causing a computer to execute a process of inputting into the item list, a drawing process of reading the contents of the operation item list and displaying the result as a network diagram or an operation item list, and an output process of outputting a result of the drawing process as an operation record slip. Recorded computer-readable recording medium. 6. A computer in which a program for causing a computer to execute a process of displaying past operation data and an end determination result of a given operation item and current operation data and an end determination result in parallel with each other is displayed. The recording medium according to claim 5, which is readable.