JP5413589B2 - Plant monitoring apparatus and plant monitoring method - Google Patents

Description

  The present invention relates to a plant monitoring apparatus and a plant monitoring method used for process monitoring and control in a plant. In particular, the present invention relates to a technique for modifying a sequence program for plant process control.

Conventionally, in plants such as manufacturing factories, power plants, and sewage treatment plants, plant processes are monitored and controlled and plant processes are maintained by a plant monitoring and control device configured using a computer system. Yes. The plant monitoring and control device uses plant information such as information on the state of the plant process and information as process data obtained by various computers provided in the plant process (hereinafter referred to as “controller”) as a plant information screen. It is displayed on the display device. Based on the plant information screen, the operator can monitor and control the plant process.
In addition, a sequence program is mounted on a controller provided in the plant process, and the plant process is automatically operated in accordance with predetermined control contents.

In such a sequence program in the plant monitoring and control apparatus, an automatic plant control process and a process for dealing with an assumed abnormality are programmed and incorporated.
These sequence programs are generated in advance by a special engineer who creates a sequence program (hereinafter referred to as “sequence engineer”), and a sequence program necessary for automatic plant control is generated and stored in the controller.

  Patent Document 1 describes a technique in which a sequence engineer easily generates a sequence program based on a time chart by creating an automatic plant control operation on the time chart.

JP 2001-222301 A

  By the way, the sequence program stored in the controller is a coping sequence program for a presumed abnormality. It is not a sequence program for abnormalities that cannot be assumed. Therefore, when an abnormality that is not assumed by the plant occurs, the operator manually operates the process equipment to deal with the abnormality of the plant. Such an abnormal operation that cannot be assumed is often performed with the same coping operation. Therefore, whenever an unexpected abnormal operation occurs, the sequence engineer creates an operation for the abnormality as a sequence program and stores it in the controller.

Such sequence program creation and installation work is performed not by the operator but by the sequence engineer. Therefore, it is necessary for the operator to report to the sequence engineer in detail and accurately the abnormality coping information such as the state at the time of occurrence of the abnormality, the content of the abnormality, and the operation content for the abnormality content. The sequence engineer creates a sequence program based on the reported information. The sequence program is incorporated in the controller.
Such transmission of information, creation of sequence programs, and installation work are excessive burdens on operators and sequence engineers.

  In the invention described in Patent Document 1, as preparation for automatically generating a sequence program, it is necessary to create an automatic control operation necessary for a sequence engineer to control a device in a time chart. Therefore, it is a burden on the operator and the sequence engineer in the transmission of information and the creation of the sequence program.

  The present invention has been made in view of the above points, and easily reflects the contents of operations performed on abnormalities not assumed by the operator in the sequence program.

  The present invention for solving the above-described problems is based on an operation history database that stores the contents of operations performed by an operator when an abnormality occurs in the plant as operation contents at the time of abnormality, and an operation information at the time of abnormality stored in the operation history database. In addition, an abnormality handling sequence program generation unit that generates an abnormality handling sequence program, an operation history database that stores operation information of the sequence program for automatically controlling the plant for each sequence program, a device referred to by the sequence program, and the device The equipment database that stores the command information for the system and the sequence program that was running when the operation was performed are extracted from the operation history database, and the command for the equipment that is the target of the operation performed by the operator is issued. Equipment sequence database Sequence program specifying unit for extracting and specifying as an additional correction target sequence program and a sequence program for handling an abnormality at the position corresponding to the time when the operation at the time of abnormality of the additional correction target sequence program is performed And an insertion portion.

  According to the present invention, a sequence program reflecting the contents of operations performed by the operator can be automatically generated. Furthermore, a new sequence program can be automatically generated by incorporating the sequence program into an appropriate position of the sequence program that was operating in the abnormal state. As a result, it is possible to reduce the operation burden on the operator, the sequence modification burden on the sequence engineer, and the maintenance time when a failure occurs, thereby reducing the burden on the operator and the sequence engineer.

It is the block diagram which showed the structure of the plant monitoring control apparatus which concerns on one Embodiment of this invention. It is a figure which shows an example of the data structure of the apparatus database which concerns on one Embodiment of this invention. It is a figure which shows an example of the data structure of the operation history database which concerns on one Embodiment of this invention. It is a figure which shows an example of the data groove structure of the operation history database which concerns on one Embodiment of this invention. It is a flowchart which shows the production | generation processing example of the abnormality countermeasure correction | amendment sequence program which concerns on one implementation form bear of this invention. It is a flowchart which shows the process example of the sequence program specific | specification part which concerns on one implementation form bear of this invention. It is a figure which shows an example of the abnormality handling sequence program which concerns on one implementation form bear of this invention. It is a figure which shows an example of the additional correction object sequence program which concerns on one implementation form bear of this invention. It is a figure which shows an example of the abnormality countermeasure insertion sequence program which concerns on one implementation form bear of this invention. It is a figure which shows an example of the abnormality countermeasure correction | amendment sequence program which concerns on one implementation form bear of this invention.

Hereinafter, an embodiment of the present invention will be described in the following order with reference to FIGS.
1. 1. Configuration of plant monitoring control device Operation of plant monitoring and control equipment

[1. Configuration of plant monitoring and control device]
Hereinafter, the structure of the plant monitoring control apparatus in the example of one Embodiment of this invention is demonstrated using FIG.

FIG. 1 is a block diagram showing a configuration of a plant monitoring control device 1 according to an example of an embodiment of the present invention. The plant monitoring and control apparatus 1 includes a process device 70, a controller 50, and a plant monitoring apparatus 10. The process equipment 70 and the controller 50 are connected via a process I / O device 60. The controller 50 and the plant monitoring apparatus 10 are connected via a network 40 such as a LAN (Local Area Network) or a WAN (Wide Area Network).
The process equipment 70 is a general term for pumps, valves, sensors, and the like that constitute plants such as manufacturing factories, power plants, and sewage treatment plants.

  First, the controller 50 will be described. The controller 50 includes a sequence control unit 54, a sequence program database 53, a process I / O interface unit 52, and a network interface unit 51, and automatically controls the process equipment 70 via the process I / O device 60. It is something to control. Further, the controller 50 outputs information such as the state and output of the process equipment 70 to the plant monitoring apparatus 10 via the process I / O interface unit 52, the network interface unit 51, and the network 40.

  The sequence program database 53 stores an automatic control sequence program (hereinafter referred to as “sequence program”) necessary for automatically controlling the process device 70.

  The sequence control unit 54 performs a control operation according to the sequence program stored in the sequence program database 53 and the state information of the process device 70 acquired via the process I / O interface unit 52. The obtained result is output to the process device 70 via the process I / O interface unit 52 to be controlled.

  The network interface unit 51 is connected to the plant monitoring device 10, the sequence program database 53, the sequence control unit 54, and the process I / O interface unit 52, and plays a role of a relay between the plant monitoring devices 10. .

  Next, the plant monitoring apparatus 10 will be described. The plant monitoring apparatus 10 includes a network interface unit 11, a screen display unit 12, an input unit 13, a database 20, a sequence program generation unit 30, a built-in adjustment unit 14, and a sequence program transmission unit 15. Yes. The plant monitoring apparatus 10 mainly monitors and controls the process equipment 70 via the controller 50. Further, the sequence program stored in the controller 50 is changed or added.

  The network interface unit 11 is connected to the screen display unit 12, the input unit 13, the database 20, and the sequence program transmission unit 15, and is connected to the controller 50, which is an external device, via the network 40. Playing a role.

  In the screen display unit 12, plant information (state information) such as a state quantity in each device of the process device 70 and measurement data measured by each device, execution / stop in the sequence control unit 54, and a sequence program are executed. Information such as the position of the processing (hereinafter referred to as “processing phase”) and automatic / semi-automatic information are displayed. For example, a liquid crystal display panel can be applied.

  The input unit 13 includes input devices such as a touch panel, a keyboard, and a mouse that operate the screen displayed on the screen display unit 12. The operator inputs a display command and an operation command to the process device 70 through the input unit 13 in accordance with information such as the state and output of the process device 70 displayed on the screen display unit 12. These commands are output to the process device 70 via the network 40 and the controller 50.

  Next, the database 20 includes a device database 21, an operation history database 22, and an operation history database 23. These databases are stored in a non-volatile storage device. Each database may be constructed in one storage device.

As shown in FIG. 2, the device database 21 includes a sequence program name, a target device referenced (operated or monitored) by the sequence program, and command information (state reference and operation output information) of the target device. Is stored. For example, “first valve”, “second valve”, “first pump”, and “piping C” are stored in the column of the target device in the item of the sequence program called A sequence. Then, “open state”, “closed state”, “starting up”, and “flow rate of 100 m ³ / h or more” are stored in the state / output column so as to correspond to those target devices.
The sequence program name in the device database 21, the target device, and the status and output of the target device are the same as those in the sequence program database 53.

  As illustrated in FIG. 3, the operation history database 22 stores an operation target and an operation content for each operation time when the operator operates the input unit 13. In addition, information over time such as display contents displayed on the screen display unit 12 and alarm confirmation instruction operation is also stored. One item of information stored here is, for example, that the operation target “alarm screen” performed the operation content “screen display” for the operator at the operation time “7/22 10:53:00”. Information.

As shown in FIG. 4, the operation history database 23 stores the operation time of the process device 70, the sequence program operating at the operation time, and the operation contents of the sequence program. Information is collectively referred to as “operation information”). That is, the operation history database 23 stores information on the operation contents of the controller 50 that automatically controls the process device 70. The operation content here indicates, for example, the operation status of execution / stop of the sequence program, position information of the execution processing of the sequence program, automatic / semi-automatic operation of the process equipment, and the like.
Further, the operation history database 23 includes only the operation information from when the abnormality of the process device 70 occurs until it is resolved, or the process device when the operator performs an operation when the process device 70 is abnormal. Only the operation information may be stored.
One item of information stored here is, for example, information obtained when the sequence “C sequence” performed the operation content “execution of phase 5” at the operation time “7/22 10:10:30”.

  The sequence program generation unit 30 includes a sequence program identification unit 31, an abnormality handling sequence program generation unit 32, a sequence storage unit 33, and a sequence program insertion unit 34.

  In the sequence program specifying unit 31, a sequence program (hereinafter referred to as “additional correction target sequence program”) that has been operating from the device database 21, the operation history database 22, and the operation history database 23 according to the specification of the time range. And processing phases are specified. That is, the operation performed by the operator is identified as the processing phase at which point in the sequence program stored in the sequence program database 53. The specification of the time range and the operation of the sequence program specifying unit 31 will be described later.

  The abnormality handling sequence program generation unit 32 extracts an operation history in the time range from the operation history database 22 by designating the time range. These histories are generated as a sequence program (hereinafter referred to as “anomaly handling sequence program”).

This time range (hereinafter referred to as “abnormality handling time range”) includes the time from when the abnormal state of the process device 70 occurs until the abnormal state is resolved. As an example of this abnormality handling time range, there is a time range from the occurrence of an abnormal state of the process device 70 to the resolution of the abnormal state. As another example, there is a time range from when an alarm message indicating an abnormality is displayed until the alarm message is not displayed, or a time range from when the operator starts an operation to the process device 70 until the operation ends. However, the above examples may be combined.
The specification of the time range for dealing with an abnormality is performed by a computer, a sequence engineer, or an operator. When performed by the computer, the time range during which the alarm message indicating the abnormality is displayed can be set as the abnormality handling time range. Further, when performed by a sequence engineer or an operator, the contents stored in the operation history database 22 can be displayed on the screen display unit 12 and a time range desired to be used as an abnormality handling time range can be designated and designated from the input unit 13. .

The sequence storage unit 33 acquires the additional correction target sequence program specified by the sequence program specifying unit 31 from the sequence program database 53 and temporarily stores it.
Note that the acquisition of the additional correction target sequence program is performed by acquiring the sequence program name of the additional correction target sequence program from the sequence program specifying unit 31 via the sequence program insertion unit 34. Then, it is performed via the network interface unit 11, the network 40, and the network interface unit 51.

  The sequence program insertion unit 34 generates an “abnormality handling insertion sequence program” by inserting the abnormality handling sequence program into the additional correction target sequence program. The insertion position in the additional correction target sequence program at this time is a position corresponding to the processing phase in the additional correction target sequence program specified by the sequence program specifying unit 31 or a position in the vicinity thereof. In this example, the position where this abnormality handling sequence program is inserted is a provisional position, but it may be a fixed position. For example, the time information is embedded in each step of the sequence program, and the abnormality handling time range and the time information are compared and arranged in the vicinity of the corresponding step of the sequence program.

  The built-in adjustment unit 14 performs built-in adjustment for the abnormality handling insertion sequence program, and generates a final “abnormality handling corrected sequence program”. For example, if the position of the trouble handling sequence program in the trouble handling insertion sequence program is provisional, the sequence engineer adjusts as necessary to determine the final insertion position and correct the trouble handling. Generated as a completed sequence program.

  The sequence program transmission unit 15 transmits the abnormality handling corrected sequence program from the built-in adjustment unit 14 to the sequence program database 53 via the network interface unit 11, the network 40, and the network interface unit 51. Then, the abnormality coping corrected sequence program is stored in the sequence program database 53 as a new sequence program. Further, in the sequence program transmission unit 15, the built-in adjustment unit 14 extracts the sequence program name, target device, and status / output data from the abnormality-corrected sequence program, and transfers the data to the device database 21 for storage. I am letting.

[2. Operation of plant monitoring and control device]
The operation of the abnormality monitoring corrected sequence program generation process in the plant monitoring control apparatus 1 will be described with reference to FIG. FIG. 5 is a flowchart showing a flow of processing for generating an abnormality handling corrected sequence program. FIG. 6 is a flowchart showing a flow of processing for specifying an additional correction target sequence program in step S102 of FIG. 7 to 10 show an example of a sequence program in each step of the flowchart of FIG.

  According to the present invention, in normal operation, when the process device 70 and the controller 50 that performs automatic control of the process device 70 are operated, the process device 70 becomes in an abnormal state, and the automatic control cannot cope with it. It is executed when recovered by operation.

  In the plant monitoring control device 1, when the state of the process equipment 70 becomes an abnormal state during the automatic control by the sequence control unit 54, an alarm message indicating the abnormality is displayed on the screen display unit 12, thereby allowing the operator to Be notified. The operator performs an operation from the input unit 13 and at the same time displays a screen related to the abnormality and confirms the state of the process device 70, and issues an operation command to the process device 70 to deal with the abnormality (hereinafter, referred to as “operation”). The operation content that the operator has dealt with the abnormality is called "operation content at the time of abnormality"). Here, when it is determined that the automatic operation can be continued, an automatic operation restart instruction is issued from the input unit 13. At this time, the operation content of the abnormality handling by the operator is stored in the operation history database 22, and the operation content of the sequence program operated by the sequence control unit 54 is stored in the operation history database 23.

  With reference to the flowchart of FIG. 5, processing for generating an abnormality handling corrected sequence program will be described. First, an abnormality handling time range is set (step S101). This abnormality handling time range is, for example, the whole or a part of the time from when the operator started the handling operation to the end time in order to eliminate the abnormal state. Further, as described above, the specification of the abnormality handling time range is performed by a computer or a sequence engineer and an operator.

The abnormality handling sequence program generation unit 32 extracts the operation target and the operation content in the abnormality handling time range from the operation history database 22, and automatically generates the abnormality handling sequence program according to the operation target and the operation content (step S102). ).
For example, when the abnormality handling time range is from “July 22 10:53:00” to “July 22 10:55:00”, the following operation history database 22 (see FIG. 3) The corresponding information is extracted from. That is, in this example, “July 22 10:53:00, alarm screen, screen display”, “July 22 10:53:05, first valve, open display”, “July 22nd, 10:53:10, first pump, confirmation during start-up ”,“ July 22, 10:53:15, pipe C flow rate, flow rate confirmation ”,“ July 22, 10:53:20 Second, second valve, closed confirmation ”,“ July 22, 10:53:30, second valve, opening instruction operation ”,“ July 22, 10:53:40, second valve, open “Confirmation” and “July 22, 10:54:40, pipe C flow rate, flow rate confirmation” are extracted. Based on such extracted information, the abnormality handling sequence program generation unit generates an abnormality handling sequence program.
FIG. 7 shows an example of an abnormality handling sequence program described in an SFC (Sequential Function Chart) format as an example. The sequence program shown in FIG. 7 includes steps when the state of the process equipment 70 is “first valve: open and first pump: activated and pipe C flow rate <100 m ³ / h and second valve: closed”. 1 is instructed to open the second valve, and the flow rate of the pipe C is set to 100 m ³ / h or less.
Although numerical values, conditional expressions, etc. in the abnormality handling sequence program are automatically determined by a computer, the experience can be utilized by judging and determining by humans such as sequence engineers and operators. It may be.

  Next, the abnormality handling sequence program generating unit 32 operates, and the sequence program specifying unit 31 performs processing for specifying an additional correction target sequence program into which the abnormality handling sequence program is inserted (step S103).

The process of the sequence program specifying unit 31 will be described with reference to FIG.
The sequence program specifying unit 31 extracts the operation target and the operation content within the abnormality handling time range from the operation history database 22 (step S201).
Next, the sequence program specifying unit 31 extracts a sequence program corresponding to the operation target and operation content extracted from the operation history database 22 from the device database 21 (step S202).
For example, when the abnormality handling time range is from “July 22 10:53:00” to “July 22 10:55:00”, from the operation history database 22 (see FIG. 3), Such information is extracted. The information includes “first valve, open display”, “first pump, confirmation during start-up”, “piping C flow rate, flow rate confirmation”, and “second valve, closed confirmation”. Such information and corresponding information are searched from the device database 21 (see FIG. 2). In this case, since it matches the target device and the contents of the status / output in the “A sequence” column, the “A sequence” is extracted.
It should be noted that it is preferable to be able to appropriately set how much the program is extracted as a sequence program to be inserted when they match. For example, when there is a sequence program having the same degree of coincidence of the target devices, the sequence program having the higher degree of coincidence regarding the contents of the status / output is set as the sequence program to be inserted. In this case, a more flexible sequence program can be specified.

  Next, the sequence program specifying unit 31 extracts a sequence program activated in the abnormality handling time range from the operation history database 23 (step S203). For example, when the abnormality handling time range is from “July 22 10:53:00” to “July 22 10:55:00”, the operation history database 23 (see FIG. 4) reads “ It is detected that the sequence programs “A sequence, phase 2 execution” and “C sequence, phase 6 execution” are activated. Thereby, “A sequence” and “C sequence” are extracted.

Then, it is determined whether or not there is the same sequence program from the sequence program extracted in step S202 and the sequence program extracted in step S203 (step S204).
If there is the same sequence program, only the same sequence program is extracted (step S205). In this example, “A sequence” is extracted in step 202, and “A sequence” and “C sequence” are extracted in step 203, so that the sequence program existing in both is “A sequence”. In this case, the “A sequence” is extracted as a sequence program to be inserted.
If there is no same sequence program, the sequence program to be inserted is extracted according to the judgment of the sequence engineer or operator (step S207).

In step S204, it is determined whether there are a plurality of extracted sequence programs (step S206).
When there is only one extracted sequence program, the sequence program is specified as an additional correction target sequence program. In this example, since only the sequence program “A sequence” is extracted, “A sequence” is identified as the final additional correction target sequence program (step S208).
When there are a plurality of extracted sequence programs, the sequence program to be inserted is specified according to the judgment of the sequence engineer or the operator (step S207).

  After the process of step 208 is completed, the process of the sequence program specifying unit 31 of FIG. 6 is terminated, and the process of step S103 of FIG.

Next, the sequence storage unit 33 reads out the sequence program corresponding to the additional correction target sequence program from the sequence program database 53 via the network 40, and temporarily stores it (step S104).
FIG. 8 shows an example of an additional correction target sequence program. The contents of this program are as follows. First, the sequence control unit 54 starts a sequence program, a phase 1 execution declaration is made in step 1, and control for outputting the pipe C flow rate to 100 m ³ / h or more is performed. Then, through various processes, phase 1 is finished in step 88. Next, in step 89, a phase 2 execution declaration is made. As the sixth valve is instructed to open in step 90, the sixth valve is confirmed to be opened. In step 91, the sixth pump is instructed to start, and the sixth pump is confirmed to start. An instruction is given to start the pump. Thereafter, through various processes, confirmation of closing of the tenth valve is performed, and phase 2 ends. In step 102, an execution declaration of phase 3 is made.

  The sequence program insertion unit 34 inserts the abnormality handling sequence program generated in step S102 into the abnormality correction target sequence program acquired in step S104 (step S105). At this time, as described above, the display of the abnormality handling sequence program is arranged in the vicinity of the processing phase of the sequence program operating in the abnormality handling time range. In this example, since the operation performed by the operator on the process device 70 is in the “phase 2 execution” operation of the “A sequence”, the operation is arranged in the phase 2 of the A sequence. FIG. 9 shows an example of the abnormality handling insertion sequence program.

Next, the built-in adjustment unit 14 performs built-in adjustment on the abnormality handling insertion sequence program in accordance with instructions from the system engineer and the operator, and generates a final abnormality handling corrected sequence program (step S106). For example, as shown in FIG. 9, when the position of the trouble handling sequence program in the trouble handling insertion sequence program is not fixed, the sequence engineer or the operator instructs the input unit 13 to make an adjustment, and finally The correct insertion position. FIG. 10 shows an example of an abnormality handling corrected sequence program in which the abnormality handling sequence program is incorporated so as to operate in parallel with step 90.
In addition, the sequence engineer and the operator operate the input unit 13 to adjust the content of the abnormality handling insertion sequence program. In this example, the pipe C flow rate, which is one of the requirements for the state of the process equipment 70, is changed from “Pipe C flow rate <100 m ³ / h” to “Pipe C flow rate <50 m ³ / h”. By doing so, it is possible to create a more appropriate sequence program by utilizing not only computer judgment but also human experience.

  As described above, in one embodiment of the present invention, an abnormality handling sequence program that reflects an operation performed by an operator can be automatically generated. Then, by inserting the abnormality coping sequence program into an appropriate position in the additional correction target sequence program that was operating in the abnormal state, the new sequence program is automatically generated. When this occurs, this automatically generated sequence program can handle it. As a result, it is possible to reduce the operation burden on the operator, the sequence modification burden on the sequence engineer, and the maintenance time when a failure occurs, thereby reducing the burden on the operator and the sequence engineer.

  In addition, since one Embodiment of this invention described above is a specific example of the suitable form for implementing this invention, various technically preferable restrictions are attached | subjected. However, the present invention is not limited to this embodiment unless there is a statement that the present invention is particularly limited in the description of the embodiment. Therefore, the present invention is not limited to the example of the above-described embodiment, and various modifications and changes can be made without departing from the gist of the present invention.

  For example, the start condition in the embodiment of the present invention has been described for the case where the process device 70 is in an abnormal state, but is also executed for the operation content of the operator during the normal operation of the process device 70. Also good.

  By the way, a series of processes performed by the sequence program generation unit 30, the database 20, the built-in adjustment unit 14, and the sequence program transmission unit 15 in the plant monitoring apparatus 10 can be executed by hardware or executed by software. You can also. Needless to say, the function for executing these processes can also be realized by a combination of hardware and software. When a series of processing is executed by software, it is possible to execute various functions by installing a computer in which a program constituting the software is incorporated in dedicated hardware, or by installing various programs. For example, it is installed from a program recording medium in a general-purpose computer or the like.

  In addition, the processing steps in the present specification are not limited to processing performed in time series in the order described, but also processing that is executed in parallel or individually (for example, in parallel). Processing or processing by an object).

  DESCRIPTION OF SYMBOLS 1 ... Plant monitoring control apparatus, 10 ... Plant monitoring apparatus, 11 ... Network interface part, 12 ... Screen display part, 13 ... Input part, 14 ... Built-in adjustment part, 15 ... Sequence program transmission part, 20 ... Database, 21 ... Equipment Database, 22 ... Operation history database, 23 ... Operation history database, 30 ... Sequence program generation unit, 31 ... Sequence program identification unit, 32 ... Abnormality handling sequence program generation unit, 33 ... Sequence storage unit, 34 ... Sequence program insertion unit, DESCRIPTION OF SYMBOLS 40 ... Network, 50 ... Controller, 51 ... Network interface part, 52 ... Process I / O interface part, 53 ... Sequence program database, 54 ... Sequence control part, 60 ... Process I / O apparatus, 70 ... Process machine

Claims (7)

An operation history database that stores the details of operations performed by the operator when the plant is abnormal as abnormal operation details;
Based on the abnormal operation content stored in the operation history database, an abnormality handling sequence program generating unit that generates an abnormality handling sequence program;
An operation history database that stores operation information of a sequence program for automatically controlling the plant for each sequence program;
A device database for storing information of devices referred to in the sequence program and instructions for the devices;
The sequence program that was operating when the operation was performed is extracted from the operation history database, and the sequence program that issues a command for the device that is the target of the operation performed by the operator from the device database. A sequence program specifying unit that extracts and specifies as an additional correction target sequence program;
A sequence program insertion unit for inserting the abnormality coping sequence program into the additional correction target sequence program at a position corresponding to the time when the operation at the time of the abnormality was performed;
A plant monitoring device. The plant monitoring apparatus according to claim 1, wherein the operation contents at the time of abnormality include contents of an operation performed by the operator from when the abnormality of the plant occurs until it is resolved. In the operation history database, information on the operation time, operation target, and operation content of the operator is stored in association with each other,
In the operation history database, the operation time of the sequence program, the sequence program operating at the operation time, and information on the operation content of the sequence program are stored in association with each other.
The plant monitoring according to claim 2, wherein the equipment database stores information related to the state program or operation output of the sequence program, equipment targeted by the sequence program, and equipment targeted by the sequence program. apparatus. The sequence program specifying unit includes:
In the specified time range from the occurrence of the plant abnormality until it is resolved, the operation target information is extracted from the operation history database,
Extracting the sequence program that was operating in the time range from the device database based on the operation target extracted from the history database,
The sequence program that was operating in the time range is extracted from the operation history database,
The plant monitoring apparatus according to claim 3, wherein a sequence program to be inserted into the abnormality handling sequence is specified from a sequence program extracted from the equipment database and a sequence program extracted from the operation history database. The sequence program insertion unit
Extracting the sequence program and processing phase that were operating in the time range from the operation history database,
The plant monitoring apparatus according to claim 4, wherein the abnormality handling sequence is inserted in the vicinity of a corresponding processing phase of the sequence program. Built adjustment unit for adjusting the arrangement of the abnormality handling sequence program before Symbol the sequence program insertion portion sequence program generated by, further comprising a
The abnormality handling sequence inserted in the vicinity of the corresponding processing phase of the sequence program is provisionally arranged in the sequence program, and the sequence is executed by the built-in adjustment unit that operates based on an instruction from the input unit. The position in the program is adjusted and the position is fixed.
Plant monitoring apparatus 請 Motomeko 5 wherein. An operation history storage step for storing the content of the operation performed by the operator when the plant is abnormal as the operation content at the time of abnormality,
Based on the abnormal operation contents stored in the operation history storage step, an abnormality handling sequence program generating step for generating an abnormality handling sequence program,
An operation history storage step for storing operation information of a sequence program for automatically controlling the plant for each sequence program;
A device storage step for storing information referred to in the sequence program and information on the command to the device;
A sequence program that was operating when the operation was performed is extracted from the operation history storage step, and a sequence program that issues a command to the device that is the target of the operation performed by the operator is stored in the device A sequence program specifying step that is extracted from the step and specified as the additional correction target sequence program;
A sequence program insertion step of inserting the abnormality coping sequence program at a position corresponding to the time when the operation at the time of the abnormality was performed in the additional correction target sequence program;
A plant monitoring method comprising:

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