JPH09280910A - Plant monitoring apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a optimum monitoring of a plant. SOLUTION: A display point switch timing information table 7 previously holds switching conditions to switch a trend display based on plant information at each group. A display switch judging means 8 judges a display switch timing referring to the plant information obtained by a plant information input means 3 and a display point switch timing information table 7 to report a judged group number to a trend display means 4A. The trend display means 4A works the plant information of the group number reported from the display switch judging means 8 referring a display point information table 5 to show a trend on a display device 6 and a necessary point is displayed without interposing labor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plant monitoring device such as a power plant, and more particularly to a plant monitoring device having a function of providing optimum plant monitoring information to an operator.

[0002]

2. Description of the Related Art In recent plant monitoring, it is widely practiced to display various plant information on a display device for monitoring. Among them, the trend display that displays process values in a time-series curve is a powerful monitoring method that has the characteristic that the behavior of the plant can be grasped.

A conventional plant monitoring apparatus using trend display will be described with reference to FIG.

In the figure, a plant monitoring device 1 comprises a plant information input means 3 connected to a plant 2, a trend display means 4, a display point information table 5 and a display device 6. The plant information input means 3 inputs the plant information of the plant 2. Trend display means 4
Refers to the preset display point information table 5 and inputs the plant information of the display points via the plant information input means 3 to process it into time-series curve information, which is then displayed on the display device 6 as a trend display. indicate. The operator appropriately selects a display point to be trend-displayed on the display device 6 to monitor the plant.

[0005]

The conventional plant monitoring apparatus 1 shown in FIG. 18 has the following problems.

First, when monitoring the state of a plant with a trend display, the optimum monitoring points differ according to the progress of the operation stage of the plant. Therefore, the conventional trend display points are switched or a plurality of groups are previously set. Since points were registered and operations such as switching between groups were performed manually, the burden on the operator was heavy.

Secondly, when predicting how the plant information will change from the present onward and monitoring whether or not a preset alarm range is reached within a certain time, the operator conventionally judges Therefore, there is a risk that the plant information may exceed the forecast and deteriorate.

Thirdly, when past historical data is overlaid on the trend display of the present plant information, a point serving as a trigger is set in advance and past historical data is collected when the trigger point changes, and then, The file was specified and it was displayed by superposition. However, there is a limit to past history data, and past history data cannot be displayed in contrast for all trigger points.

Fourth, when a plant system diagram is displayed to monitor the state of the plant, when an alarm occurs, the operator is notified of the alarm by changing the display color in the system diagram, and then the alarm point In order to confirm / monitor the change in the process amount, it is necessary to instruct the trend display of the corresponding point in some form, which imposes a heavy burden on the operator.

Therefore, an object of the present invention is to solve the above-mentioned problems in the conventional plant monitoring apparatus using the trend display by the following.

First, by switching the points for trend display when the plant information changes, it is possible to always display the optimum trend without operator intervention.

Secondly, the points that are expected to reach the alarm area within a certain period of time are displayed as a trend, and at the same time, the predicted transition is displayed as a curve to facilitate monitoring of the process leading to the alarm.

Thirdly, history curve display data before and after the occurrence of a plant event, which is set for each group whose trend is displayed on the screen, is searched and generated from the history data of all the plant information that is constantly collected when the plant event occurs. Then, by superimposing and displaying this, it is possible to monitor the plant while confirming the change state of past plant information and the presence or absence of an alarm.

Fourthly, when the plant information of a point displayed on the system diagram is in an alarm state, the trend of the alarmed point is displayed to monitor the point in alarm. To facilitate.

[0015]

According to the invention of claim 1, plant information input means for taking in plant information, a display point information table for storing input points for trend display for each group, and plant information for each group. Based on the display point switching timing information table that pre-stores the switching conditions for displaying the trend based on the display information, and the switching conditions of the plant information and the display point switching timing information table acquired from the plant information input means, the display switching timing is determined. The display switching determination means for outputting the group number and the display point information table when the group number determined by this display switching determination means are input to refer to the plant information of the determined group from the plant information means. Trend display means for outputting the display to the display device In which it was to be provided. According to this means, the trend of the group belonging to the input point for which the display switching condition is determined to be determined is displayed. Therefore, the trend of the input point is displayed according to the plant operation state, the operator is relieved of the burden of manually switching the trend display group, and the trend of the input point that is always needed is displayed for optimum plant monitoring. it can.

The invention of claim 2 relates to plant information input means for fetching plant information, a display point information table for storing input points for trend display for each group, and plant information fetched by the plant information input means. Prediction warning calculation means that creates prediction curve display data that predicts future transition for the determined input point when it is determined that the prediction calculation value reaches the preset value and saves in the display point information table While the plant information is displayed as a trend from the plant information input means to the acquisition display device for the input point of the group specified in the plurality of groups to be displayed, when the prediction curve display data is input from the prediction alarm calculation means, the prediction curve display is performed. Trend table that compares the data and the trend display of the corresponding input points and displays it on the display device Is obtained so as to provide a means. According to this means, it is possible to predict the plant information in the future and determine the possibility of an alarm state, and display the prediction curve display data. Therefore, the process leading to the alarm state can be monitored.

According to the invention of claim 3, plant information input means for taking in plant information, a display point information table for storing input points for trend display for each group, and history data for storing time series history data of plant information. A storage unit, a trigger point information table that describes the trigger determination conditions for each group, and a trigger point change detection that determines based on the plant information according to the trigger determination conditions described in this trigger point information table and detects the trigger points. Means and a history curve display data creating means for creating time history curve display data by taking in time series history data of the trigger points from the history data saving means when the trigger point change detecting means detects the trigger point, and display point information. The input point of the specified group within the multiple groups stored in the table While displaying the trend of the plant information from the plant information input means to the acquisition display device, the display device compares the history curve display data with the trend display of the corresponding input point when the history curve display data is input from the history curve display data creating means. And a trend display means for displaying. According to this means,
Since the history data before and after the change of the trigger point is displayed in contrast, the change state of the past plant information can be accurately grasped.

According to the invention of claim 4, a plant information input means for fetching plant information, a display point information table for storing the input points for trend display for each group, and an input point for displaying plant values on the system diagram are provided. A system diagram display point information table stored in advance, a system value display means for displaying the plant value of the input point stored in the system diagram display point information table from the plant information input means and displaying it on the system diagram of the display device, and Alarm detection means for determining whether the input point displayed on the system diagram is in an alarm state by the system diagram display means and an alarm state, and a display point information table when the alarm state is determined by the alarm detection means In addition to the system diagram displayed on the display device, the trend display means for displaying the trend of the input point in the alarm state is installed. In which was to so that. According to this means, when the plant information of the display point is in the alarm state during the system diagram display, the trend display of the input point is displayed without human intervention. Therefore, the plant can be monitored accurately.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a plant monitoring apparatus showing a first embodiment of the present invention.

In addition to the plant information input means 3, the display point information table 5 and the display device 6 shown in FIG. 18, which is a conventional example, the plant monitoring apparatus 1A includes a display point switching timing information table 7 and a display switching determination. The trend display means 4 is different from the trend display means 4A in that the trend display means 4A is provided with the means 8 to switch the trend display points on the display device 6 according to changes in the plant information.

Here, the display point switching timing information table 7 stores in advance the switching conditions for switching the trend display based on the plant information for each group. The display switching determination means 8 refers to the plant information obtained by the plant information input means 3 and the display point switching timing information table 7 to determine the display switching timing, and notifies the trend display means 4A of the determined group number. To do. The trend display means 4A processes the plant information of the group number notified from the display switching determination means 8 with reference to the display point information table 5, and displays the trend on the display device 6.

Next, the operation of the first embodiment will be described.

First, the display switching judgment means 8 performs the processing shown in FIG. 2 and inputs the display timing condition of each group set in the display point switching timing information table 7 shown in FIG. 3 (S1). The display point switching timing information table 7 shown in FIG. 3 has areas from the display timing logic storage area 7G1 of the group 1 to the display timing logic storage area 7Gm of the group m, and the display point information table 5 stores each area. The display timing of each group is expressed by logic such as AND / OR / NOT with plant information as an element.

Next, the plant information is input through the plant information input means 3 and it is determined whether or not the display timing has been established / disapproved (S2). If it is determined in this determination that there is display switching, the trend display means 4A is notified of the group number (S4). Then, the process waits until the next display switching determination time (S5).

When the group number is input from the display switching determination means 8, the trend display means 4A inputs the plant information of the display points set in the display point information table 5 shown in FIG. 4 via the plant information input means 3. To do. As shown in FIG. 4, the display point information table 5 includes registered point storage areas 5G1p to 5Gmp for each area of the group name 5G1 to the group name 5Gm of the group m, as shown in FIG. I remember it.

Next, the trend display means 4A processes the inputted plant information and, as shown in FIG.
The trend is displayed over time on the two-dimensional coordinates with the vertical axis as the plant information input value. The trend display screen 100 displayed on the display device 6 shown in FIG.
The current plant value is digitally displayed in 01, and the trend is displayed in the lower screen 102.

The display point information table 5 and the display point switching timing information table 7 can be freely set / corrected by an operator so that the display points and the display switching timing can be freely changed.

As described above, according to the first embodiment, when the state of the plant changes, the display point of the trend display can be automatically switched to the optimum one for monitoring.
The burden on the operator can be reduced.

FIG. 6 is a block diagram of a plant monitoring system showing a second embodiment of the present invention.

In the second embodiment, the predictive warning calculation means 1 is used.
1 and the prediction curve display data table 10 are provided to predict how the plant information will change from the present onward, and when it is determined that the preset alarm range will be reached within a certain time, the predicted result is the trend. It is characterized in that it is displayed in contrast to the display.

Here, the prediction curve display data table 10
And the prediction curve display data created by the prediction warning calculation means 11 is stored. The prediction warning calculation means 11 performs prediction calculation on the plant information and creates prediction curve display data.

Next, the operation of the second embodiment will be described.

First, the predictive warning calculation means 11 executes the processing shown in FIG. 7 and inputs the plant information from the plant information input means 3 (S10). Then, it predictively calculates how the plant information will change after the present (S11). Next, it is determined whether or not the preset alarm range is reached within a certain time (S12). When it is determined that the alarm will be reached within a certain time, the data of the two-dimensional coordinates in which the horizontal axis represents time and the vertical axis represents the predicted value is saved as predicted curve display data in the predicted curve display data table 10 shown in FIG. The trend display means 4B is notified of the display of the prediction curve. (S1
3). In this process, prediction calculation is performed for all plant information, and waits until the next prediction calculation timing (S14, S1).
5).

In the prediction curve display data table 10 shown in FIG. 8, the group number storage area 10G, the point number storage area 10P and the prediction data storage area 10D are stored.
There is.

Next, the trend display means 4B inputs the plant information of the display points through the plant information input means 3 with reference to the display point information table 5 shown in FIG. The trend is displayed over time on the two-dimensional coordinates used as the current plant information input value.

On the other hand, when the trend display means 4B receives the prediction curve display notification from the prediction warning calculation means 11, as shown in FIG. 9, the upper screen 1 of the trend display screen 110 is displayed.
A plant value is displayed in 11, and a prediction curve display predicted from the current time for point 3 is displayed on the lower screen 112, for example. And, together with the estimated time to reach the warning
The value is displayed.

The trend display means 4B switches the display group if it is different from the currently displayed group. If the group to which the point is set does not exist in the display point information table 5, the point is temporarily registered in the display point information table 5 and the display group is switched.

As described above, according to the second embodiment, when it is predicted that a certain plant information will reach the alarm area within a fixed time, the predicted value of the point is automatically superposed on the current value. By displaying the curves together, the process leading up to the alarm can be easily monitored.

FIG. 10 is a block diagram of a plant monitoring system showing a third embodiment of the present invention.

In the third embodiment, history data storage means 12, all-plant information history data table 13, trigger point information table 14, and trigger point change detection means 15 are provided.
And a history curve display data creating means 16 and a history curve display data table 17 are provided, and when a trigger is determined,
The feature is that the trend display and the history curve display are displayed in contrast with each other.

Here, the history data storage means 12 stores the time-series history data of all plant information. The all-plant information history data table 13 stores all-plant information history data created by the history data storage unit 12. The trigger point information table 14 stores, for each group of the display point information table 5, a trigger point serving as a reference point for comparing the time series history data with the current plant information. The trigger point change detection means 15 detects a change in the trigger point set in the trigger point information table 14. The history curve display data creating means 16 creates the curve display data before and after the trigger point change of the display points set in the display point information table 5 from all the plant information history data. History curve display data table 17
Stores the history curve display data created by the history curve display data creating means.

Next, the operation of the third embodiment of the present invention will be described.

First, the history data storage means 12
All plant information is input through the plant information input means 3 in a fixed cycle, and the data is stored in the all-plant information history data table 13 in time series.

Next, the trigger point change detecting means 15 operates as shown in FIG.
The process is executed for No. 1, and first, the trigger point information table 14 is referred to (S21). As shown in FIG. 12, the trigger point information table 14 is provided with a trigger point storage area 14G1 to a trigger point storage area 14Gm of a group m, and a trigger point is described in each storage area.

Next, the plant information is fetched from the plant information input means 3 and it is judged whether or not the trigger point has changed (S22). If it is determined that there is a change in this determination, the history curve display data creating means 16 is notified (S
24). Then, it waits until the next trigger point change determination time (S25).

Subsequently, the history curve display data creating means 16
Executes the processing shown in FIG. 13 and refers to the display point information table 5 and the total plant information history data table 13 (S31). Then, the history data before and after the change of the trigger point is searched for the display points belonging to the group notified of the change of the trigger point (S3).
2). Subsequently, data of two-dimensional coordinates in which the horizontal axis is time and the vertical axis is history value is created and the history curve display data table 17
The history curve is displayed on the trend display means 4 after being stored in
Notify C (S33, S34).

The trend display means 4C inputs the plant information of the display points set in the display point information table 5 as shown in FIG. 14 via the plant information input means 3 and displays the upper screen of the trend display screen 120. 121
A group number (AAAAA in the figure) and data of the group (XXX in the figure, etc.) are displayed on the screen 122 of the lower stage.
Of the history curve display data table 17 of the two-dimensional coordinates in which the horizontal axis represents time and history values on the two-dimensional coordinates with the horizontal axis representing time and the vertical axis representing the current plant information input value. The information is displayed by overlaying it on the normal curve display of the plant information.

Note that the retrieval method can be freely set / corrected when a plurality of trigger point changes are stored in the all-plant information history data table 13. When the history curve display data creating unit 16 notifies the trend display unit 4C of the display of the history curve, the trend display unit 4C switches the display group if the group is different from the currently displayed group. Further, the display point information table 5 and the trigger point information table 14 can be freely set / corrected by an operator so that the display point and the trigger point can be freely changed.

According to the third embodiment of the present invention, when a preset change in trigger point is detected, the historical data before and after the same trigger point change is automatically superposed on the trend of the current value. By displaying the curve, comparison with the past state can be easily performed.

FIG. 15 is a block diagram of a plant monitoring system showing a fourth embodiment of the present invention.

In the fourth embodiment, the system diagram display means 20, the system diagram display point information table 21, and the alarm detection means 2 are shown.
2 is provided, and when an alarm is issued at a point on the system diagram, the trend display of that point is displayed as a trend.

Here, the system diagram display means 20 displays the plant system diagram on the display device 6. The system diagram display point information table 21 stores in advance the points for displaying plant values on the system diagram. The alarm detection unit 22 detects whether or not the plant information of each point in the system diagram display point information table 21 is in an alarm state.

Next, the operation of the fourth embodiment will be described.

First, the system diagram display means 20. The plant information of the display points set in the system diagram display point information table 21 is input through the plant information input means 3 and displayed on the display device 6 by a digital value, a representation method such as a bar chart or a meter, and the like. The alarm detection means 22 is notified of the display of the system diagram.

The alarm detection means 22 performs the processing shown in FIG. 16, and when the system diagram display means 20 notifies the system diagram display, it inputs data from the system diagram display point information table 21 (S41). Then, the plant information is input from the plant information input means 3 and it is determined whether or not the point currently displayed in the system diagram is in the alarm state (S42). If it is determined that the alarm state is obtained by this determination, the trend display means 4D
(S43, S44). Further, the system waits for the next system diagram display point alarm state determination timing, and when the system diagram is displayed, the above process is repeated (S45, S46).

The trend display means 4D is the alarm detection means 2
2, when the alarm point is notified, the plant information of the display point set in the display point information table 5 is input through the plant information input means 3, and as shown in FIG. System diagram display screen 13
In addition to 1, the trend display screen 132 is provided, and the trend is displayed on the two-dimensional coordinates with the horizontal axis representing time and the vertical axis representing the current plant information input value.

The trend display means 4D searches the group in which the point in the alarm state is set, and displays the corresponding group if it is not currently displayed. If there is no group to which the points in the alarm state are set, the points are temporarily added to the display point information table 5 and the group is displayed.

According to the fourth embodiment, when monitoring is performed with a system diagram that is displayed by a representation method such as a digital value or bar chart or meter, an alarm is issued at the point displayed in the system diagram. When it occurs, by automatically displaying the trend of that point, it becomes possible to monitor the trend display in addition to monitoring only the current value on the system diagram.

[0060]

As described above, according to the invention of claim 1, since the trend of the group belonging to the input point determined by the determination of the display switching condition is displayed, the trend of the input point according to the plant operating state is displayed. The operator is freed from the burden of manually switching the trend display group to be displayed, and the trend of the input point that is always required is displayed to enable optimum plant monitoring.

According to the second aspect of the present invention, the plant information is predicted in the future to determine the possibility of an alarm state and the prediction curve display data is displayed. Therefore, the process of reaching the alarm state is accurately monitored. be able to.

According to the third aspect of the present invention, since the history data before and after the change of the trigger point is displayed in contrast, the present plant state can be accurately grasped from the change state of the past plant information.

According to the invention of claim 4, when the plant information of the display point is in the alarm state during the system diagram display, the trend of the input point is displayed without human intervention, so that the operator's burden is reduced. It can be reduced and the plant can be monitored accurately.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a plant monitoring device according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing a process of a display switching determination unit included in FIG.

FIG. 3 is an explanatory diagram showing a configuration of a display point switching timing information table provided in FIG.

FIG. 4 is an explanatory diagram showing a configuration of a display point information table provided in FIG.

5 is an example of a display screen displayed on the display device provided in FIG.

FIG. 6 is a configuration diagram of a plant monitoring apparatus showing a second embodiment of the present invention.

FIG. 7 is a flowchart showing a process of a predictive warning calculation means provided in FIG.

FIG. 8 is an explanatory diagram showing a configuration of a prediction curve display data table provided in FIG.

9 is an example of a display screen displayed on the display device provided in FIG.

FIG. 10 is a configuration diagram of a plant monitoring apparatus showing a third embodiment of the present invention.

11 is a flowchart showing the processing of the trigger point change detection means provided in FIG.

12 is an explanatory diagram showing a configuration of a trigger point information table included in FIG.

FIG. 13 is a flowchart showing a process of a history curve display data creating means provided in FIG.

14 is an example of a display screen displayed on the display device included in FIG.

FIG. 15 is a configuration diagram of a plant monitoring apparatus showing a fourth embodiment of the present invention.

16 is a flowchart showing the processing of the alarm detection means provided in FIG.

17 is an example of a display screen displayed on the display device provided in FIG.

FIG. 18 is a configuration diagram showing a conventional plant monitoring device.

[Explanation of symbols]

 1 plant monitoring device 2 plant 3 plant information input means 4 trend display means 5 display point information table 6 display device 7 display point switching timing information table 8 display switching determination means 10 prediction curve display data table 11 prediction alarm calculation means 12 history data storage Means 13 All plant information history data table 14 Trigger point information table 15 Trigger point change detection means 16 History curve display data creation means 17 History curve display data table 20 System diagram display means 21 System diagram display point information table 22 Alarm detection means

Claims (4)

[Claims] 1. A plant information input means for fetching plant information, a display point information table for storing input points for trend display for each group, and a display for previously storing switching conditions for trend display based on plant information for each group. Display switching determination means for determining the display switching timing from the point switching timing information table, the plant information imported from the plant information input means, and the switching conditions of the display point switching timing information table, and outputting the determined group number When the group number determined by the display switching determination means is input, the display point information table is referred to, the plant information of the determined group is acquired from the plant information means, and the trend display is output to the display device. To have a trend display means Plant monitoring device for the butterflies. 2. A plant information input means for taking in plant information, a display point information table for storing input points for trend display for each group, and a prediction calculation for the plant information taken in by the plant information input means. Prediction warning calculation means for creating prediction curve display data for predicting future transition for the input point determined when it is determined that the prediction calculation value reaches a preset value, and a plurality of items stored in the display point information table While the plant information about the input point of the group identified in the group is displayed as a trend from the plant information input means to the capture display device, when the predictive curve display data is input from the predictive alarm calculation means, the predictive curve display data And the trend display of the corresponding input points are displayed on the display device. A plant monitoring device. 3. A plant information input means for taking in plant information, a display point information table for storing input points for trend display for each group, a history data storage means for storing time series history data of plant information, and a group. A trigger point information table that describes a trigger determination condition for each, a trigger point change detection unit that makes a determination based on the plant information according to the trigger determination condition described in this trigger point information table, and detects a trigger point, and this trigger When the point change detection means detects a trigger point, time history data of the trigger point is taken from the history data storage means to create history curve display data, and stored in the display point information table. Corresponds to an input point of a specified group within multiple groups While the plant information is displayed as a trend from the plant information input means to the capture display device, when the history curve data is input from the history curve display data creating means, the history curve display data and the trend display of the corresponding input point are compared. A plant monitoring device comprising: a trend display unit for displaying on the display device. 4. A plant information input means for fetching plant information, a display point information table for storing trend-displayed input points for each group, and a system diagram for pre-storing input points for displaying plant values on a system diagram. Display point information table, system diagram display means for displaying the plant value of the input point stored in this system diagram display point information table from the plant information input means and displaying it on the system diagram of the display device, and this system diagram display means Alarm detection means for judging whether the input point displayed on the system diagram is in the alarm state or not, and an alarm state determined by the alarm detection means,
A plant monitoring device comprising: a trend display means for displaying a trend of an input point in an alarm state in addition to a system diagram displayed on the display device by referring to the display point information table.