JP2017215881A - Plant supervising control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plant supervising control system that can largely alleviate operation burdens on operators.SOLUTION: When an operator selects a marking point registered in a marking point database 49 in accordance with an operation by means of a mouse 19, a trend screen 62 is divided, and then, a supervising control device 14 is configured to: acquire past data on an indicatable time width with a corresponding time of a selected marking point 91 as a reference from data stored in a trend graph database 41, while an indication by a trend graph screen of current data remains; also indicate a trend graph corresponding to the past data; and thereby compare the current data with the past data.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a plant supervisory control system, and more particularly to a plant supervisory control system that performs supervisory control of various plants such as public water treatment plants.

  The conventional plant monitoring system informs the operator of the state of the plant monitoring control target device in real time by sequentially displaying the measurement data collected from the plant monitoring control target device on the trend graph screen. The operator displays the trend graph screen, the alarm history list screen, and the device operation operation history list screen while switching them, confirming the operation results for the plant monitoring / control target device, and the plant monitoring / control target device failure, etc. This is to deal with an abnormality or a plant monitoring control system abnormality.

  For this reason, the trend graph of the past plant state can be used as a reference as a method for determining the current state of the device subject to plant monitoring and control. To display this, the trend graph screen of the past data can be switched by switching the trend graph screen of the current data. And a method of displaying current data and past data by dividing a trend graph screen. The past data to be displayed on the trend graph screen is acquired from the storage device or storage medium in which the past data is stored by the operator inputting time information and time information on the screen.

  However, in a plant monitoring and control system operated in real time, it is difficult to accurately remember the event occurrence time such as device operation and plant abnormality. In addition, since plant supervisory control is often performed by operators, operations performed by other operators must be confirmed on the device operation operation history list screen. In this way, it takes time and effort to perform processing for comparing and displaying past data and current data that are effective for accurately and efficiently monitoring and controlling the state of the plant monitoring and control target equipment that changes in real time. It may be difficult to obtain desired past data.

  There existed the following as such a technique. That is, the normal display mode and the designated display mode can be selected as the display mode. In the normal display mode, the measurement signal is trend-displayed on the entire display screen such as a CRT in real time as in the conventional case. When the designated display mode is selected, the display screen is divided into two or more, one of which displays the trend signal of the measurement signal in real time, and the other display screen displays the data for the specified time at the specified time. Is read from the memory, transferred to the display unit and displayed. The designated time can be variously designated, for example, at the start of surgery or 60 minutes before the current time (see Patent Document 1).

Measurement data is stored and displayed on the display screen in real time. On the other hand, there is one that compares the state before the specified reference time with the current time state by displaying past data before the specified reference time on a separate screen that can be displayed on the screen size (see Patent Document 2).
Further, the measurement data is stored and displayed on the display screen in real time, while the past data is compressed according to the data amount and displayed on another screen. Some of the compressed data can be enlarged and displayed (see Patent Document 3).

Japanese Patent Laid-Open No. 5-341717 Japanese Patent Laid-Open No. 9-26336 JP 2002-340936 A

The conventional plant monitoring control system is configured as described above. In the plant monitoring control of Patent Document 1, it is necessary to grasp the state of the plant before the occurrence of an event (such as a plant abnormality). There is a problem that data shortage cannot be denied in terms of contrast. Another problem is that it is necessary to predict the event occurrence time and input the screen.
Further, in the plant monitoring control of Patent Document 2 described above, since it is necessary to grasp the plant state after the occurrence of an event (plant abnormality or the like), there is a problem that data shortage cannot be denied in terms of comparison between current data and past data. It was. Another problem is that it is necessary to predict and set the event occurrence time.
Further, in Patent Document 3, since past data is displayed as an image of recording chart paper, the maximum value and minimum value of the past data itself are easy to understand, but compression of data becomes indispensable as past data increases. There is a problem in that it is troublesome to search and display past data before and after the occurrence of an event that expands and contrasts.

  The present invention has been made to solve the above-described problems, and when the operator desires to compare the current data with the past plant state while sequentially displaying the current data on the trend graph screen in real time. In addition, by providing a simple operation, the operator can reliably compare current data and past data with a simple operation, and provide a plant monitoring control system that can greatly reduce the operation burden on the operator. For the purpose.

A plant monitoring control system according to the present invention includes a controller for monitoring and controlling a plant monitoring control target device;
A monitoring control device that reconfigures the monitoring data collected by the controller to be displayable and generates control data to be transmitted to the controller;
A display device that displays the state of the plant monitoring control target device and an input device for an operator to perform a screen input operation on a screen displayed on the display device,
The monitoring and control device includes a trend graph database that stores the monitoring data as trend graph data in time series, and a trend graph screen that displays the state of the plant monitoring and control target device. It has a marking point database that stores the corresponding time at the marking point specified by
When the operator selects the corresponding time of the marking point registered in the marking point database by operating the input device, the trend graph screen is divided and the current data is displayed by the trend graph. The trend graph corresponding to the first past data is obtained from the trend graph database by acquiring first past data having a time width that can be displayed with the corresponding time of the selected marking point as a reference. Is displayed in contrast to the trend graph of the current data.

  According to the plant monitoring and control system configured as described above, it is possible to reliably and repeatedly refer to past data that is desired to be compared with the current data. With reference to the location of the plant abnormality or plant monitoring control system abnormality and the cause thereof, it is possible to quickly cope with a plant abnormality or plant monitoring control system abnormality that may newly occur.

It is a whole block diagram which shows the plant monitoring control system by the plant monitoring control system by Embodiment 1, and the plant monitoring control object apparatus monitored and controlled by the plant monitoring control system. It is a block block diagram which shows the plant monitoring control system by Embodiment 1. 3 shows an example of a system flow screen for explaining a trend graph screen division display function executed in the first embodiment. It is a figure which shows the alarm history list screen by Embodiment 1. FIG. 6 is a diagram showing a device operation operation history list screen according to the first embodiment. FIG. 6 is a diagram showing an example of a trend graph screen according to Embodiment 1. FIG. It is the figure which extracted only the trend graph screen after the cursor movement for demonstrating the trend graph screen division | segmentation display function performed in Embodiment 1. FIG. 6 is a diagram showing a window of a right mouse button operation menu for explaining a trend graph screen division display function executed in the first embodiment. FIG. FIG. 6 is a diagram showing a marking point operation window and a sub window in the first embodiment. 6 is a diagram illustrating an example of a trend graph screen divided into two according to Embodiment 1. FIG. 5 is a diagram illustrating an example of a trend graph screen divided into four according to Embodiment 1. FIG. 5 is a diagram illustrating an example of a trend graph screen divided into four according to Embodiment 1. FIG. It is a block block diagram which shows the plant monitoring control system by Embodiment 2. It is a block block diagram which shows the plant monitoring control system by Embodiment 3. It is a figure which shows the alarm log list screen by Embodiment 4. FIG. 10 is a diagram illustrating an example of a trend graph screen divided into two according to a fourth embodiment. It is a figure which shows the apparatus operation operation history list screen by Embodiment 5. FIG. 20 is a diagram illustrating an example of a trend graph screen divided into two according to the fifth embodiment.

Embodiment 1 FIG.
A plant monitoring control system according to Embodiment 1 will be described below with reference to the drawings. FIG. 1 is an overall configuration diagram illustrating a plant monitoring control system and plant monitoring control target devices such as pumps and valves that are monitored and controlled by the plant monitoring control system. The plant monitoring and control system 11 generates a plurality of controllers 13 that monitor and control the plant monitoring and control target equipment 12 and control data that is reconfigured so that the monitoring data collected by the controller 13 can be displayed and transmitted to the controller 13. And a LAN 15 that performs data communication between the monitoring control device 14 and the plurality of controllers 13.

  The monitoring control device 14 includes a trend graph database 41, an alarm history database 42, a device operation operation history database 43, a device information database 47, a device correlation information database 48, and a marking point database 49. Further, the plant monitoring control system 11 is provided with a display device 16 and an input device 17. The trend graph database 41 stores monitoring data as trend graph data in time series. The alarm history database 42 stores alarm events based on monitoring data in time series as alarm history data. The device operation operation history database 43 stores operation data performed on the plant monitoring control target device 12 by the operator and device operation history data in time series as device operation operation history data. The device information database 47 stores device information of the plant monitoring control target device 12.

  The equipment correlation information database 48 stores the correlation information of the equipment located on the upstream side of the plant monitoring control target equipment 12 or the equipment located on the downstream side. The display device 16 displays the interrelationship and current state of the plant monitoring control target device 12, displays the state of the device as a trend, and further displays an alarm event, an operation by an operator, an operation event of the device, and the like. The input device 17 is used by an operator to perform screen input operations on various screens displayed on the display device 16, and includes a keyboard 18 and a mouse 19. When the marking point database 49 finds a place of interest (hereinafter referred to as a marking point) on the trend graph screen 62 (see FIG. 7) displaying the state of the plant monitoring control target device 12 in real time, the mouse The occurrence time (corresponding time of the marking point) and related information are stored by the simple operation of 19.

  FIG. 2 is a block diagram for easily explaining the operation of the trend graph screen division display function executed in the first embodiment. The monitoring control device 14 includes a network processing unit 31, a data management processing unit 32, and a screen display input processing unit 21. Further, the screen display input processing unit 21 includes a system flow screen display input processing unit 22, a trend graph screen display input processing unit 23, an alarm history list screen display input processing unit 24, and a device operation operation history list screen display input processing unit 25. It has. The network processing unit 31 receives the monitoring data collected by the controller 13 and transmits the control data input from various screens by the operator to the controller 13. The data management processing unit 32 performs processing such as normalization on the monitoring data transmitted from the network processing unit 31, and further transmits the current data to the system flow screen display input processing unit 22 that performs screen display in real time. Further, the data management processing unit 32 stores the data as trend display data in the trend graph database 41. If the monitoring data is numerical data of the plant monitoring control target device 12 such as water level and flow rate, the numerical data alarm judgment is performed as necessary. An alarm event is generated and stored in the alarm history database 42. Further, when the monitoring data is an operation signal or an alarm signal of the plant monitoring control target device 12 such as a pump or a valve, the data management processing unit 32 generates an operation event when the monitoring data is an operation signal, and stores it in the device operation operation history database 43. Store. In the case of an alarm signal, it is directly processed as an alarm event.

  The system flow screen display input processing unit 22 systematically displays the plant monitoring control target equipment 12 on the basis of information in the equipment information database 47 and the equipment correlation information database 48, and then displays real-time monitoring data on the screen. Further, the system flow screen display input processing unit 22 allows the operator to perform control and operation by inputting a screen to the plant monitoring control target device 12. The trend graph screen display input processing unit 23 displays trend graph data in a time series and enables a screen input operation by an operator. The alarm history list screen display input processing unit 24 displays alarm history data in a time series and enables a screen input operation by an operator. The device operation operation history list screen display input processing unit 25 displays the device operation operation history data in time series and enables a screen input operation by the operator. The screen display input processing unit 21 includes screens of a system flow screen display input processing unit 22, a trend graph screen display input processing unit 23, an alarm history list screen display input processing unit 24, and a device operation operation history list screen display input processing unit 25. Mutual management of display input.

  FIG. 3 shows an example of a system flow screen for explaining the trend graph screen division display function executed in the first embodiment. The system flow screen 61 displays, as symbols, the plant monitoring control target devices 12 belonging to the system that is the plant monitoring control target, and displays monitoring data related to each device as a numerical data display 81 and a status display 82. Operation buttons (system flow button 65, trend graph) for calling each screen of the system flow screen 61, the trend graph screen 62, the alarm history list screen 63, and the device operation operation history list screen 64 described later are displayed at the left end of the screen. A button 66, an alarm history list button 67, and a device operation operation history list button 68) are arranged. The system flow button 65 has a pull-down menu for selecting a system name to be displayed on the screen. Also, an alarm history list screen 63 related to the system already selected by the system flow button 65 is displayed at the lower left of the screen. Further, a device operation operation history list screen 64 related to the system already selected by the system flow button 65 is displayed at the lower center of the screen. 4 is an example of a screen showing only the alarm history list screen 63, and FIG. 5 is an example of a screen of the device operation operation history list screen 64.

  FIG. 6 shows an example of a trend graph screen for explaining the trend graph screen division display function executed in the first embodiment. In FIG. 3, when the trend graph button 66 at the left end of the system flow screen 61 is pressed, the trend graph screen 62 related to the system selected by the system flow button 65 is displayed. A system flow screen 61 (see FIG. 3) is displayed by pressing the system flow button 65 at the left end of the screen and selecting a system name to be displayed on the screen from the pull-down menu. Other operation buttons are the same as those in FIG.

  FIG. 7 shows only the trend graph screen 62 after moving the cursor for explaining the trend graph screen division display function executed in the first embodiment. In FIG. 7, the operator moves the cursor 91 to the marking point using the mouse 19 in order to register the marking point on the trend graph screen 62 displaying the state of the plant monitoring control target device 12 in real time. The state is shown. The position of the cursor 91 becomes the corresponding time of the marking point.

  FIG. 8 shows a window 101 of the right button operation menu of the mouse 19 for explaining the trend graph screen division display function executed in the first embodiment. When the cursor 91 is moved to a marking point to be registered on the trend graph screen 62 in FIG. 7 and the right button of the mouse 19 is pressed, a window 101 is displayed. A marking point operation button 102 for operating a marking point is arranged in the window 101 of the mouse right button operation menu.

  FIG. 9 shows a marking point operation window 111 that is activated when the right button of the mouse 19 is pressed and sub-windows that are called from each operation button for explaining the trend graph screen division display function executed in the first embodiment. The sub-window includes a marking point registration window 121, a marking point list (reference) window 131, a marking point list (deletion) window 141, a marking point batch deletion window 151, and a marking point deletion window 161. When the marking point operation button 102 is selected in the window 101 of the right button operation menu of the mouse 19 shown in FIG. 8, a marking point operation window 111 is displayed.

The marking point operation window 111 includes a registration button 112 for registering marking points, a reference button 113 for referring to marking points, a deletion button 114 for deleting marking points, and a batch deletion button 115 for deleting marking points at once.
The marking point registration window 121 includes a registration button 122 for registering the time indicated by the cursor 91 as a marking point and a cancel button 123 for stopping the registration operation.
The marking point list (reference) window 131 displays a list of marking points registered in the marking point database 49 in the form of operation buttons, and is executed by operating the marking point reference button 132. The name of the operation button includes a marking point ID and an occurrence time. The list display can be rearranged, and can be selected from three patterns of registration order 133, time order 134, and order 135 close to the current time. Further, when the number of divisions of the trend graph screen exceeds 2, the data amount reduction 136 or the display time reduction 137 is selected.

  The marking point list (deletion) window 141 displays a list of registered marking points in the form of operation buttons, and the name of the operation button includes a marking point ID and an occurrence time. Then, the corresponding button is selected from the marking point deletion button 142 and the marking point deletion window 161 is called. The marking point batch deletion window 151 includes a delete button 152 for deleting marking points at once and a cancel button 153 for stopping a batch deletion operation. The marking point deletion window 161 has a delete button 162 for deleting the marking point and a cancel button 163 for stopping the deletion operation.

  FIG. 10 is an example of a trend graph screen divided into two for explaining the trend graph screen division display function executed in the first embodiment. The screen is displayed by selecting the marking point reference button 132 displayed in the marking point list (reference) window 131. The trend graph screen displaying the current data is divided, the trend graph screen of the current data is continuously displayed in the upper part of the screen, and the marking point selected with the marking point reference button 132 can be displayed as the reference (center) A in the lower part of the screen. Time width data is acquired from past data (first past data) sequentially stored in the trend graph database 41 and displayed on the screen.

  FIG. 11 is an example of a trend graph screen divided into four for explaining the trend graph screen division display function executed in the first embodiment. When referring to two or three marking points from the window 101 of the mouse right button operation menu, the trend graph screen is divided into four screens. Since the display time width is the same as that of the trend graph screen of FIG. 10, it is possible to display a plurality of screens by reducing the amount of data to be displayed by displaying the trend data to be displayed. In FIG. 11, the current data is continuously displayed in the upper right section, the past data having a time width that can be displayed on the trend graph screen 62 is displayed in the lower right section, and the marking point C is displayed in the upper left section. The past data having a time width that can be displayed on the trend graph screen 62 is displayed on the trend graph screen 62, and the past data having the time width that can be displayed on the trend graph screen 62 is displayed on the lower left side based on the marking point D.

  FIG. 12 is an example of a trend graph screen divided into four for explaining the trend graph screen division display function executed in the first embodiment. When referring to two or three marking points from the window 101 of the mouse right button operation menu, the trend graph screen is divided into four screens. The amount of data to be displayed can be reduced by setting the time width to be displayed to half of the trend graph screens of FIGS. 10 and 11, and the multi-screen display becomes easier. The graph display method is basically the same as in FIG. That is, in the lower right row, past data having a time width that can be displayed on the trend graph screen 62 with the marking point B as a reference is displayed, and in the upper left row, the time width that can be displayed on the trend graph screen 62 with the marking point C as a reference. The past data having the time width that can be displayed on the trend graph screen 62 based on the marking point D is displayed in the lower left row.

  Next, the operation will be described. The controller 13 controls the plant monitoring control target device 12 such as a pump and a valve installed in the plant and acquires monitoring data transmitted from the plant monitoring control target device 12. The monitoring data is the current value (state value) of the plant monitoring control target device 12. When the plant monitoring control target device 12 is a measuring device such as a flow meter, the actual measurement value measured by the measuring device. (Numerical data), an operation signal indicating the operation when the plant monitoring control target device 12 is a valve or the like, and an abnormal signal such as an alarm signal or a failure signal generated from the plant monitoring control target device 12 Included in monitoring data. The monitoring control device 14 receives monitoring data from the controller 13 via the LAN 15, processes it, and displays the screen. On the other hand, the control data input by the operator's operation via the LAN 15 is transmitted to the controller 13.

The internal operation of the monitoring control device 14 will be described with reference to FIGS. The network processing unit 31 transmits monitoring data received from the controller 13 via the LAN 15 to the data management processing unit 32 and transmits control data sent from the data management processing unit 32 to the controller 13 via the LAN 15. .
The data management processing unit 32 performs processing such as normalization on the monitoring data sent from the network processing unit 31 and transmits it as current data to the system flow screen display input processing unit 22 that performs screen display in real time. Stored in the trend graph database 41 as display data. In addition, when the monitoring data is numerical data of the plant monitoring control target device 12 such as water level and flow rate, the data management processing unit 32 generates an alarm event as needed by alarm determination of the numerical data and stores it in the alarm history database 42. . Further, when the monitoring data is an operation signal or alarm signal of the plant monitoring control target device 12 such as a pump or a valve, the data management processing unit 32 generates an operation event and stores the operation event in the device operation operation history database 43. In the case of an alarm signal, it is stored in the alarm history database 42 as an alarm event as it is. On the other hand, the data management processing unit 32 receives control data screen-input by the operator from the system flow screen display input processing unit 22 and sends it to the network processing unit 31.

  When the operator selects a system name from the pull-down menu of the system flow button 65, the system flow screen display input processing unit 22 applies the corresponding plant monitoring control target equipment based on the information in the equipment information database 47 and the equipment correlation information database 48. 12 icons are systematically displayed on the system flow screen 61, and monitoring data sent from the data management processing unit 32 is displayed on the screen. On the other hand, the system flow screen display input processing unit 22 transmits the control data input on the screen by the operator to the controller 13 via the data management processing unit 32 and the network processing unit 31, and the equipment operation input on the screen by the operator. Is stored in the device operation operation history database 43 as a device operation operation event via the data management processing unit 32.

  When the operator selects the trend graph button 66, the trend graph screen display input processing unit 23 is the plant monitoring control target device 12 corresponding to the system selected by the system flow button 65 that can be displayed on the trend graph screen 62 from the trend graph database 41. Trend data is acquired and displayed on the trend graph screen 62. Various information that the operator operates on the trend graph screen 62 is also collected. The alarm history list screen display input processing unit 24, when the operator selects the alarm history list button 67, the plant monitoring control corresponding to the system selected by the system flow button 65 that can be displayed on the alarm history list screen 63 from the alarm history database 42. Alarm history information related to the target device 12 is acquired and displayed on the alarm history list screen 63.

  The device operation operation history list screen display input processing unit 25 is selected by the system flow button 65 that can be displayed on the device operation operation history list screen 64 from the device operation operation history database 43 when the operator selects the device operation operation history list button 68. The device operation operation history information related to the plant monitoring control target device 12 corresponding to this system is acquired and displayed on the device operation operation history list screen 64. The screen display input processing unit 21 is a screen display by a system flow screen display input processing unit 22, a trend graph screen display input processing unit 23, an alarm history list screen display input processing unit 24, and a device operation operation history list screen display input processing unit 25. Perform mutual management of inputs.

  Next, the operation of the marking point will be described with reference to FIGS. 1 and 8 to 12. First, marking point registration will be described. FIG. 7 shows only the trend graph screen 62 after moving the cursor for explaining the trend graph screen division display function. The cursor 91 at the right end of the normal trend graph is operated with the mouse 19 and moved to the marking point. A point where the state of the plant monitoring control target device 12 is clearly changed on the trend graph screen 62 is a marking point candidate (point X in FIG. 7). When the marking point is determined, the right button of the mouse 19 is pressed to pop up a window 101 of the mouse right button operation menu (FIG. 8). Next, the marking point operation button 102 for performing the marking point operation is selected from the menu of the window 101 of the right mouse button operation menu.

  When the marking point operation button 102 is selected, a marking point operation window 111 shown in FIG. 9 is displayed in a pop-up. Therefore, the registration button 112 is selected and a marking point registration window 121 is displayed in a pop-up. In order to register the marking point selected by moving the cursor in the trend graph screen 62, the registration button 122 is selected in the window. By this operation, the above-described marking points are registered in the marking point database 49. In order to distinguish from other marking points, an ID is automatically assigned, and the relevant information such as the corresponding time and system name of the marking point is added and registered. Since it is registered in the database, it can be referenced unless it is deleted. If not registered, the cancel button 123 is selected.

  Next, reference to past data (first past data) by marking points will be described. That is, the operator wants to compare current data with past plant conditions. In this case, when a registered marking point is selected, the currently displayed trend graph screen 62 is divided, and the past data in the range specified by the marking point is displayed in comparison with the current data being continuously displayed (FIGS. 10 to 10). 12). While the trend graph screen 62 is being displayed, the right button of the mouse 19 is pressed to pop up the window 101 of the mouse right button operation menu (FIG. 8). Next, the marking point operation button 102 for performing the marking point operation is selected from the menu of the window 101 of the right mouse button operation menu.

  When the marking point operation button 102 is selected, a marking point operation window 111 shown in FIG. 9 is displayed in a pop-up, and the reference button 113 is selected to display a marking point list (reference) window 131 in a pop-up. List registered marking points in the form of operation buttons. The marking point reference button 132 includes a marking point ID and a corresponding time. When the marking point reference button 132 is pressed, the trend graph screen 62 on which the current data is displayed is divided, and the trend graph screen display of the current data is continued. ) Is acquired from past data (first past data) sequentially stored in the trend graph database 41 and displayed on another screen (see FIGS. 10 to 12). In this way, it is possible to easily compare current data with past data. The list display format marking point reference button 132 can be rearranged, and the registration order 133, the time order 134, and the order close to the current time (used when it is desired to compare with a specific time zone of the day) 135. Can be selected. Data amount reduction 136 or display time reduction 137 can be selected as a function for adjusting the amount of data to be trend-displayed in order to make the trend graph screen display easier to see when it exceeds two divisions.

  Next, deletion of marking points will be described. This is to select and delete registered marking points from the marking point database 49. While the trend graph screen 62 is being displayed, the right button of the mouse 19 is pressed to pop up the window 101 of the mouse right button operation menu (FIG. 8). Next, the marking point operation button 102 for performing the marking point operation is selected from the menu of the window 101 of the right mouse button operation menu. When the marking point operation button 102 is selected, a marking point operation window 111 shown in FIG. 9 is displayed in a pop-up. Therefore, the delete button 114 is selected, and a marking point list (deletion) window 141 is displayed in a pop-up. Here, a list of registered marking points is displayed in the form of operation buttons. The marking point deletion button 142 includes a marking point ID and a corresponding time. When the marking point deletion button 142 is pressed, the marking point deletion window 161 is called up. In order to delete the selected marking point, the delete button 162 is selected in the marking point deletion window 161. When not deleting, the cancel button 163 is selected.

Next, the batch deletion of marking points will be described. This deletes all the registered marking points from the marking point database 49 at once.
While the trend graph screen 62 is being displayed, the right button of the mouse 19 is pressed to pop up the window 101 of the mouse right button operation menu (FIG. 8). Next, the marking point operation button 102 for performing the marking point operation is selected from the menu of the window 101 of the right mouse button operation menu. When the marking point operation button 102 is selected, a marking point operation window 111 shown in FIG. 9 is displayed in a pop-up. The collective deletion button 115 is selected and a marking point collective deletion window 151 is displayed in a pop-up. In order to delete all registered marking points, the delete button 152 is selected in the marking point batch deletion window 151. When not deleting, the cancel button 153 is selected.

  As described above, past data that is to be compared with current data can be referred to reliably and repeatedly with only a simple mouse operation, greatly reducing the operational burden on the operator, It is also possible to quickly deal with a plant abnormality or a plant monitoring control system abnormality that may newly occur with reference to the occurrence location and cause of the monitoring control system abnormality.

Embodiment 2. FIG.
In the first embodiment, the case where past data to be divided and displayed on the trend graph screen is collected from the trend graph database 41 has been described. In the present embodiment, as shown in FIG. 44, a specified period storage alarm history database 45, and a specified period storage device operation history database 46 are provided. Then, the trend graph data (second past data) corresponding to the reproduction time of the specified period is extracted from the specified period storage trend graph database 44 instead of the trend graph database 41. Here, the specified period storage trend graph database 44 stores trend graph data for a certain period centered on the corresponding time of the marking point shown in the first embodiment as a separate file. As a result, referring to the location and cause of the plant abnormality or plant monitoring control system abnormality that occurred during the specified period, it is possible to promptly deal with a plant abnormality or plant monitoring control system abnormality that may newly occur. Is possible. The trend graph database 41 used in the first embodiment discards data that has passed the storage period, but the specified period storage trend graph database 44 can be stored until the user performs a deletion operation. The operation of the first embodiment may be performed in parallel with the operation of the present embodiment.

Embodiment 3 FIG.
In the first embodiment, the case where past data to be divided and displayed on the trend graph screen is collected from the trend graph database 41 has been described. However, in the present embodiment, as shown in FIG. A specified period storage trend graph database 52 on the removable medium 51, a specified period storage alarm history database 53 on the removable medium 51, and a specified period storage device operation history database 54 on the removable medium 51 are provided. Then, the trend graph data (second past data) corresponding to the playback time of the specified period on the removable medium 51 is extracted from the trend graph database 52 stored on the removable medium 51 instead of the trend graph database 41. To do. As a result, with reference to the location and cause of the plant abnormality or plant monitoring control system abnormality that occurred during the specified period on the removable media 51, it is possible to quickly respond to a plant abnormality or plant monitoring control system abnormality that may newly occur. It is also possible to deal with it. When the removable medium 51 is used, the data can be referred to by a monitoring control device other than the monitoring control device 14 storing the data. It can also be viewed on office computers, enabling data analysis and so on. The operation of the first embodiment may be performed in parallel with the operation of the present embodiment.

Embodiment 4 FIG.
In the first to third embodiments, the time of arbitrary past data on the trend graph screen 62 is registered as a marking point, and the operator operates the marking point operation window 111 when a comparison with the current data is desired. In this embodiment, the trend graph screen 62 is divided and the current data and the past data are displayed in comparison. However, in the present embodiment, as shown in FIG. The alarm event reference button 84 which can select each alarm event currently provided is provided. An alarm history list screen 63 exists at the bottom of the trend graph screen 62 shown in FIG. 6. When an alarm event reference button 84 as shown in FIG. 15 on this alarm history list screen 63 is pressed, as shown in FIG. Current data is continuously displayed on the trend graph screen (top), and past data of the time width that can be displayed on the trend graph screen 62 with the alarm event occurrence time (G in FIG. 16) as the reference (center) instead of the marking point (Third past data) is collected from the trend graph database 41 and displayed on the trend graph screen (lower row) for comparison. In this way, the alarm event is displayed based on the occurrence of the plant abnormality and plant monitoring control system abnormality that occurred and the cause and cause of the plant monitoring control system abnormality. More quickly. In the lower display of FIG. 16, past data having a time width that can be displayed on the trend graph screen 62 is displayed based on the occurrence time of the selected alarm event (G in FIG. 16). Since the probability that a plant abnormality will occur when an alarm event occurs, the present embodiment is more meaningful than the first embodiment. In actual operation, it is possible to confirm the recovery status from the plant abnormality by comparing the status at the time of the alarm event and the current status. It is also possible to check whether the current situation has the same tendency as the situation at the time of alarm event occurrence. In addition, you may perform operation | movement of Embodiment 1-3 in parallel with the operation | movement of this embodiment.

Embodiment 5. FIG.
In the first to third embodiments, the time of arbitrary past data on the trend graph screen 62 is registered as a marking point, and the operator operates the marking point operation window 111 when a comparison with the current data is desired. In this embodiment, the trend graph screen 62 is divided and the current data and the past data are displayed in comparison. In the present embodiment, as shown in FIG. 43 is provided with a device operation event reference button 85 for selecting each device operation event stored in 43. A device operation operation history list screen 64 exists at the bottom of the trend graph screen 62 shown in FIG. 6. When the device operation operation event reference button 85 as shown in FIG. 17 on the device operation operation history list screen 64 is pressed, As shown in FIG. 18, the current data is continuously displayed on the trend graph screen (upper), and the device operation event occurrence time (H in FIG. 18) is used as a reference (center) instead of the marking point on the trend graph screen 62. The past data (fourth past data) of the displayable time width is collected from the trend graph database 41 and displayed in contrast on the trend graph screen (lower row). In this embodiment, it aims at confirming the change of the plant state after apparatus operation operation event generation | occurrence | production. Thus, by checking the change in the plant state after the occurrence of a past device operation event while viewing the current data, it is possible to estimate a sign such as a plant abnormality. Therefore, with reference to the location and cause of the plant abnormality or plant monitoring control system abnormality that has occurred, it is possible to more quickly cope with a plant abnormality or plant monitoring control system abnormality that may newly occur. . In the lower display of FIG. 18, past data (fourth past data) having a time width that can be displayed on the trend graph screen 62 on the basis of the occurrence time of the selected device operation event (H in FIG. 18). Is displayed. The operations of the first to third embodiments may be performed in parallel with the operation of the present embodiment.
It should be noted that the present invention can be freely combined with each other within the scope of the invention, and each embodiment can be appropriately modified or omitted.

11 Plant monitoring and control system, 12 Plant monitoring and control target equipment,
13 controller, 14 monitoring control device, 16 display device, 17 input device,
19 mouse, 41 trend graph database,
44 Trend graph database stored for a specified period,
49 Marking point database, 51 Removable media,
52 Trend graph database stored for a specified period on removable media,
62 Trend graph screen, 63 Alarm history list screen,
64 Device operation / operation history list screen, 91 marking points.

Claims (5)

A controller for monitoring and controlling the plant monitoring and control target device;
A monitoring control device that reconfigures the monitoring data collected by the controller to be displayable and generates control data to be transmitted to the controller;
A plant monitoring control system comprising a display device for displaying the state of the plant monitoring control target device and an input device for an operator to perform screen input operations on a screen displayed on the display device,
The monitoring and control device includes a trend graph database that stores the monitoring data as trend graph data in time series, and a trend graph screen that displays the state of the plant monitoring and control target device. It has a marking point database that stores the corresponding time at the marking point specified by
When the operator selects the corresponding time of the marking point registered in the marking point database by operating the input device, the trend graph screen is divided and the current data is displayed by the trend graph. The trend graph corresponding to the first past data is obtained from the trend graph database by acquiring first past data having a time width that can be displayed with the corresponding time of the selected marking point as a reference. Is displayed in contrast with the trend graph of the current data. The monitoring control device includes a specified period storage trend graph database that stores trend graph data of a certain period centered on the corresponding time of the marking point,
The monitoring control apparatus acquires second past data of the predetermined period centered on the corresponding time of the selected marking point from the specified period storage trend graph database, and corresponds to the second past data. The plant monitoring control system according to claim 1, wherein a trend graph is displayed in comparison with the trend graph of the current data. Provide removable media with trend graph database stored for the specified period,
The monitoring control device acquires the second past data of the fixed period centered on the corresponding time of the selected marking point from the specified period storage trend graph database in the removable medium. The plant monitoring control system according to claim 2. When an alarm event is selected on the alarm history list screen on which the alarm history information related to the plant monitoring control target device is displayed, the monitoring control device continuously displays current data on the trend graph screen, and further, the alarm event The third past data having a time width that can be displayed on the trend graph screen is collected from the trend graph database on the basis of the occurrence time of the event, and the third past data is displayed in contrast with the current data on the trend graph screen. The plant monitoring control system according to claim 1. When a device operation operation event is selected on the device operation operation history list screen on which device operation operation history information related to the plant monitoring control target device is displayed, the monitoring control device continuously displays current data on the trend graph screen In addition, fourth historical data having a time width that can be displayed on the trend graph screen on the basis of the occurrence time of the device operation event is collected from the trend graph database, and the fourth past data is collected in the trend graph screen. The plant monitoring control system according to claim 1, wherein the current monitoring data is displayed in comparison with the current data.

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