JPH0532761B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a device for displaying the progress status of an operation operation on a display device when automatically operating a plant using a computer.

[Technical background of the invention and its problems]

In order to operate a plant, for example, a thermal power plant, it is necessary to operate a large number of devices constituting a boiler, a turbine, and a generator system in a predetermined order while coordinating among the devices. However, this operation is complicated and complicated, requires a large number of operators, and can only be operated with a certain amount of experience. For this reason, methods have recently been adopted in which computers are used to operate and operate plant equipment in place of operators. However, it is difficult to fully automate the operation of large-scale plants such as thermal power plants and nuclear power plants using computers.
Due to security and management issues, the series of operating operations is divided into multiple stages, and each time the operating operation of one stage is completed, the operator checks the progress of the plant and calculates the next step by computer. The driver is asked to perform the driving operations for the stages.

In other words, a series of operating operations performed by a computer in a plant include "boiler boosting",
It is divided into multiple stages A, B, C, etc. such as "boiler ignition preparation", "ignition", "temperature increase", etc. Each stage has multiple operation items such as "Fuel control valve initial opening setting", "A-FDF S/S automatic input", etc. for the combustion system, _a1 ... _aM , _b1 ... _bN , _c1 ...Contains _CO . Further, each operation item is stored in the computer as an operation logic table α consisting of a plurality of operation timing conditions a _{111 .} . . , pre-operation conditions a _{121 .} . . , operation completion conditions a ₁₃₁ . Here, the operation timing condition is a condition for determining that it is time to start operation when a certain condition of the plant is met. The pre-operation conditions are conditions for determining whether the operating device is in a condition that allows it to be operated.
The operation completion condition is a condition indicating that the operation is completed when the operating device is operated. Therefore, when a change occurs in the plant status signals taken into the computer from various parts of the plant, the corresponding operation logic table α is retrieved from the memory, and the timing and preparation for the operation of that operation item are determined. This is done by checking the operation timing conditions and pre-operation conditions written in the table using the plant status signal that is input, and if the conditions are met, an operation command is issued to the plant to operate the operation item. will be held. Further, as a result, a change occurs in the plant status signal, and if the operation completion condition is satisfied, the processing of that operation item ends. For example, by performing such processing on all the operation items that are required depending on the plant status at that time in stage A, once the processing in stage A is completed, the processing in the next stage B can be started with the confirmation of the operator. to move to. This confirmation operation is performed as follows. That is, on the operation panel, illuminated pushbuttons displaying the names of each stage are arranged in the order of progress of plant operation operations, and when the processing of stage A is completed, the pushbutton of the next stage B lights up and flickers. When the operator presses a push button in the flicker to give permission for the computer to process Stage B, only the flicker stops, and Stage B processes are performed as described above. Next, when this process is completed, the push button turns off.

In this way, when automatically operating a plant using a computer, the state of progress can be understood at a very rough level by looking at the lighting state of the illuminated push button. However, it is not easy to determine which operation items in the stage currently being processed have been completed, which items are currently being executed, and which items remain. In this case, for the operation items during the stage, it is possible to display the progress status by providing a lamp indicator as in the case of stages, but as mentioned earlier, it is necessary to perform operations during each stage. The items differ depending on the plant conditions at the time, for example, when starting up after being stopped for a long time, or when restarting after being stopped for a short time.
Therefore, if an operation item is selected according to each condition and the progress status is displayed by illumination in an easy-to-understand manner, a large amount of panel space is required, making it impossible to obtain a practical control panel.

In this way, with conventional plant automatic operation technology using computers, it is not possible to accurately judge the progress status of each operating end of the plant, leaving most of the judgment to the operator's judgment ability, and in the end, many meters etc. A large number of operators were tasked with constantly monitoring the operation and determining the progress of the operation, making it impossible for a small number of people to operate automatically.

[Purpose of the invention]

The present invention provides a display that allows the operator to determine at a glance what operations are about to be automatically performed on the current stage, which operations have been completed, and which operations have not yet been performed, via the display device. The purpose is to provide equipment.

[Summary of the Invention] In order to achieve this object, the present invention provides a table of operation items corresponding to each plant condition, since the operation items required at each stage can be predicted in advance according to the plant condition at the time. When the operator selects one of the stages via the keyboard, the computer determines the plant status at that time based on the plant status signals input so far, and Stages the process of determining the progress status of an operation item by extracting an operation item according to the state, referring to the operation logic table corresponding to that operation item, and determining whether each condition in the table is met or not. Perform all necessary operations on the CRT,
It is characterized in that it is displayed on a display device such as a typewriter.

[Embodiments of the invention]

Hereinafter, the present invention will be explained with reference to the drawings.

FIG. 2 shows a configuration diagram of an automatic plant operation system according to an embodiment of the present invention, in which 1 is a plant, 2 is a computer, 3 is an automation progress panel, and 4
is a keyboard as an input device, 5-1, 5-2
is a CRT display, and 6 is a printer.

Blocks in the computer 2 represent functional blocks of the computer, and 21 is an input processing section that inputs into the computer 2 a plant state signal S _IN representing the state quantities of various parts of the plant 1.

22 is an operation logic table storage unit, and each operation logic table α has one operation item written in a state defined by AND and OR logic of operation timing conditions, pre-operation conditions, and operation completion conditions.

23 is an operation logic processing section, and an input processing section 21
In response to changes in the plant status signal S _IN inputted via the input terminal, the related operation logic table α is retrieved and a determination is made as to whether each condition is met.

24 is an information processing section, and an operation logic processing section 23
The operation logic table α processed in CRT display 5
-2 or display output to the printer 6.

25 is an output processing section, and an operation logic processing section 23
Based on the determination result in , if the operation timing condition and pre-operation condition for one operation item are satisfied, but the operation completion condition is not satisfied, an operation command S _OUT is output to the plant 1.

Reference numeral 26 denotes an automation progress management table, which stores a table of required operation items corresponding to each plant state at each stage.

Reference numeral 27 denotes an automation progress display processing unit which displays the end of each operation item based on the operation item obtained from the automation progress management table 26 and the operation logic table α obtained from the operation logic table storage unit 22 corresponding to the operation item. It is determined whether or not the process has been completed, and a display is output to the CRT display 5-1.

FIG. 3 shows a detailed diagram of the automation progress display processing unit 27, which is the dialogue processing unit 2 that processes requests from the operator input via the keyboard 4.
71 and the interaction processing unit 271 to input the information requested by the operator, and input the progress display data that matches the information from the automation progress management table 26,
It is composed of a progress display processing section 272 that outputs a display on the CRT display 5-1, and a management table change processing section 273 that corrects the automation progress management table 26 when the automation progress method changes due to adjustment of the plant 1. be done.

FIG. 4 shows a specific example of the automation progress panel 3 provided to reflect the operator's judgment in the operation of an automated power generation plant. For example, regarding a boiler, the operation of the plant starts with "boiler pressure increase" in the diagram, and then sequentially moves to "boiler ignition preparation,""ignition," and "temperature increase." Each stage such as "Boiler Boosting" in the figure is composed of an illuminated push button switch. For example, when the plant conditions indicate that it is OK to start Boiler Boosting, the "Boiler Boosting" push button will flicker. The system waits for the operator's permission to start "boiler boosting", that is, for the push button switch to be pressed. Therefore, when the operator presses this push button switch, the light turns on continuously and the computer 2 starts automatic operation of each operation item in the "boiler boost" stage. Furthermore, when the processing of each operation item is completed, "Boiler Boosting"
Once completed, the pushbutton switch will turn off.

With the above configuration, by pressing the flickering pushbutton switch on the automation progress panel 3, automatic operations for each operation item of the stage performed by the computer 2 are performed by the input processing unit 21 from the plant 1. An operation logic table α corresponding to changes in the plant status signal S input through the
is retrieved from the operation logic table storage unit 22, and the operation logic processing unit 23 determines whether the condition is met.
By satisfying the operation timing condition and pre-operation condition,
The operation command is output to the plant 1 via the output processing section 25. The operation result is fed back to the change in the plant status signal S, and as a result, if the operation completion condition is met, the processing of that operation item is completed, and such processing completes all of the operations currently configuring that stage. The operations are performed on the operation items, and when all of them are completed, the output processing unit 25 outputs the results to the automation progress panel 3 in order to proceed to the next stage described above.

When the computer 2 is performing such an automatic driving operation, if the user wishes to check the progress of the operation item processing, the user operates the keyboard 4 while looking at the CRT display 5-1. That is, first select the phase of whether the plant status you want to see is start or stop. For example, if you select start, the CRT display 5-
1 displays each stage shown in FIG. When you operate the keyboard 4 to select, for example, "7 Boiler Ignition Preparation" from the displayed list of stages, the CRT display 5-1 will show the current plant's "Boiler Ignition Preparation" as shown in Figure 6. Items required for the driving operations are displayed, and at the same time, the progress status of each operation item is displayed in different colors.

That is, the automation progress management table 26 in FIG.
stores a table of various operation items that need to be operated according to various plant conditions, so that the operation items that need to be operated for the current plant condition are determined based on the plant condition signal inputted via the input processing unit 21. Select and specify a table. Therefore, when the "7 boiler ignition preparation" stage is keyed in from the keyboard 4, the automation progress display processing unit 27 first retrieves the operation item list selected and specified in the automation progress management table 26 from the automation progress management table 26. At the same time, each operation logic table α corresponding to each operation item in the table is retrieved from the operation logic table storage unit 22. At this time, the operation logic table α corresponding to unnecessary operation items judged from the current plant state is not taken out. Next, a display color is determined according to the progress state as shown in FIG. 7, depending on whether each condition of the retrieved operation logic table α is satisfied or not. In other words, it is white when each condition is not satisfied and the operation is not yet completed, green when the operation timing has been reached but the pre-operation conditions are not satisfied, and when both conditions are met, the operation command is sent from the output processing unit to the plant 1. If the operation completion condition is not satisfied even after the specified time TD has elapsed, the color is yellow, and if the operation completion condition is not met, the color is red, and if the operation item processing is completed, the color is cyan. Therefore, "boiler ignition preparation" shown in Figure 6
Each operation item in a stage changes from white to yellow to cyan in accordance with the progress of the plant, if there is no malfunction at all. However, even if the operation timing condition is satisfied, if the pre-operation condition is not satisfied, such as when the operation device is not powered on, the operation item changes to green malfunction display 1. on the other hand,
If the operation completion condition is not satisfied even after a predetermined period of time has elapsed even after issuing an operation command and operating the device, a red malfunction display 2 is displayed. Perform this process for all items in "7 Boiler ignition preparation",
After color identification of the results as shown in Figure 6,
Display on CRT display 5-1.

Therefore, by looking at the screen of the CRT display 5-1, the operator can see at a glance which operation items have been completed, which ones are currently being executed, and which operation items remain. In addition, if a problem occurs in the plant and progress is slow, you can easily understand the operation items, and if you want to know the cause in detail, you can display the operation logic table on the CRT display 5-1. You can understand the cause in detail. As a result, the plant can be automatically operated more smoothly and safely by computers.

〔Effect of the invention〕

As described above, according to the present invention, the progress status of operation items according to the plant status, which has been considered difficult in the past, can be displayed clearly and easily using a display device such as a CRT. It becomes possible to grasp the current progress status of the plant in detail using a computer. As a result, the plant can be automatically operated smoothly and safely using computers.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the process of automatically operating a plant using a computer, FIG. 2 is a block configuration diagram of a plant operating device according to an embodiment of the present invention, and FIG.
Figure 4 is a detailed diagram of the automation progress display processing section, Figure 4 is an explanatory diagram of the automation progress panel in Figure 2, and Figure 5 is the
An explanatory diagram of the stage displayed on the CRT display in the figure,
FIG. 6 is an explanatory diagram of the operation items displayed on the CRT display of FIG. 2, and FIG. 7 is a time chart for displaying each operation item of FIG. 6 in different colors according to the progress status. 1...Plant, 2...Electronic computer, 3...Automation progress panel, 4...Keyboard, 5-1, 5-2...
CRT display, 6... printer, 21... input processing unit,
22... Operation logic table storage section, 23... Operation logic processing section, 24... Information processing section, 25... Output processing section, 26... Automation progress management table, 27... Automation progress display processing section, 271... Dialogue processing section, 272
... Progress display processing section, 273... Management table change processing section.

Claims (1)

[Claims] 1. A series of operating processes in a plant is divided into a plurality of stages each consisting of a plurality of operation items, and each operation item is defined by the operation timing conditions and pre-operation conditions necessary for performing the operation. The operation completion conditions that define the completion of the operation are determined and stored in advance in a computer in the form of an operation logic table, and the corresponding operation logic table is created in response to changes in plant status signals from various parts of the plant that are input into the computer. For each operation item, an operation command is issued to the plant when the operation timing conditions and pre-operation conditions specified in the table are satisfied, and execution of the operation item is determined to be completed when the operation completion condition is satisfied. When all operation items of one stage have been processed, the automatic plant operation progress display device moves on to processing the operation items of the next stage with confirmation from the operator. an operation progress management table that stores each operation item table in each of the stages; and when an operator selects one of the stages via an input device, an operation item table corresponding to the plant state at that time. A means for selecting from the operation progress management table; and a means for extracting the corresponding logic table based on the operation item selected by the means, and determining whether each condition specified in the table is satisfied or not, thereby controlling the operation. means for performing a process of determining the progress state of an item for all operation items in the selected operation item table; Depending on the progress of each operation item, there are two cases: before the operation timing condition is satisfied, and when the operation timing is reached but the pre-operation condition is not satisfied.
means for determining and displaying characters on a display device in different colors to determine when an operation command is being output due to the establishment of a pre-operation condition, when the operation is not completed even after a predetermined time has elapsed, and when the operation has been completed. A plant automatic operation progress display device characterized by: