JPH0627287A - Plant surveillance device - Google Patents

Abstract

PURPOSE:To reduce each mental load to an operator as selecting necessary information and judging operation, etc., in the case of occurrence of abnormality and accident and attain safer plant operation atmosphere. CONSTITUTION:A window screen selection part 55 is provided to select a window screen to be displayed based on the plant significant function model top node obtained from a plant significant function model top node introduction processor 54 and the evaluation result of each function node and to determine the layout and automatically produce the display screen. It also makes a CRT screen automatical display controller 56 investigate whether the kind and layout in the displayed window is the same as the prior period and in the case of difference one, screen display switching is automatically done as a new screen.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the above-mentioned process control system in an environment for centrally presenting information, such as a central control room of a process control system having a vast monitoring area such as nuclear power plants and power plants. The present invention relates to a plant monitoring device used for performing process monitoring.

[0002]

2. Description of the Related Art FIG.
In the figure, 31 is a PWR type nuclear power plant, 32 is a data collection device, and 34 is a CRT display device for displaying operation monitoring information which is an inference processing result. , 35 are plant monitoring boards.

Further, 36 is a storage device in which operation monitoring information to be provided to the operator is stored, 37 is a function evaluation result of each plant important function layered model taken from the storage device 40 and stored in the storage device 41. An arithmetic processing unit that determines the optimum framework of monitoring information based on the operation heuristic knowledge base that summarizes the empirical knowledge about the operation of plant operators stored in the structure of the plant important function hierarchical model and the storage device 42. Is.

Further, reference numeral 38 retrieves driving monitoring information to be additionally provided from the storage device 36 on the basis of the inference result in the arithmetic processing unit 37, adds information, and then displays it on the CRT display unit 34 as display information. An arithmetic processing unit 39 for sending, based on the information from the data collecting unit 32, shows the achievement status of each function other than the lowest equipment / device level among the plant functions which are the elements of the plant important function layered model. It is an arithmetic processing unit for performing evaluation.

Reference numeral 40 denotes arithmetic processing units 39 and 43.
The above-mentioned storage device for storing the result of arithmetic processing by
1 is a plant important function hierarchy that systematically represents and hierarchically describes the function for maintaining the plant operation goal to be achieved by the operator in each plant operation mode, and the means for achieving it. It is the above-mentioned storage device that stores the computerized model.

Further, 42 is the above-mentioned storage device for storing an operation heuristic sticky knowledge base in which the empirical knowledge that the plant operator has regarding the operation is stored, and 43 is the lowest equipment level of the plant important function hierarchical model. The above-mentioned arithmetic processing device for executing each functional evaluation (abnormality diagnosis of components by the model method or the like).

Next, the operation will be described. The data collection device 32 collects data from the nuclear power plant 31, and sends the data to the next two arithmetic processing devices 39 and 43 in a form suitable for each processing. The storage device 40 is an evaluation result of each node of the plant important function hierarchical model stored in the storage device 42 (evaluation result of each function), that is,
The result of abnormality cause identification and the evaluation value of the degree of abnormality of each node are stored.

Further, the arithmetic processing unit 39 evaluates all nodes (control level, function level and target level) except the node (equipment / equipment level) located in the lowest layer of the plant important function hierarchy model. . That is,
The arithmetic processing unit 39 takes in the process data and implements the node located in the lowest layer of the plant important function layered model.

Further, in the arithmetic processing unit 43, in the case of a detector having multiplicity, the principle of majority decision, the model comparison method for devices such as controllers and filters, the dynamic characteristic model for piping, and the process amount characterizing the cause of abnormality. Is used to identify the cause of abnormality in each device, piping, etc., and the result is stored in the storage device 40. These arithmetic processing devices 39, 43
The calculation is executed every time the data collection device 32 fetches new data.

Next, the arithmetic processing unit 37 selects one optimum plant important function layered model from the plant important function layered models stored in the storage unit 41 and actually generates it in the plant. By comparing with the data from the storage device 40 which is the result of evaluation of the phenomenon, the position in the plant important function layered model where the abnormality has progressed (to which level the current abnormal event belongs) and the degree of the abnormality To analyze. At this time, a driving heuristic knowledge base stored in the storage device 42 is used.

[0011]

Since the conventional plant monitoring apparatus is constructed as described above, the operation of extracting important information for monitoring from the plant important function hierarchical model has been described in detail. Since the method of presenting such information to the user (operator) and the method of expressing it are not described, there is a problem that the concrete operation method of the conventional plant monitoring device is unclear.

In other words, since the processing function of presenting information to the operator has not been considered, even if the most noteworthy functional element in the plant function can be extracted at the time of an abnormality or an accident, such information can be extracted by the operator. There was a problem that it could not be presented to the operator in a form that was easy to understand.

The present invention has been made to solve the above-mentioned problems, and provides information on plant functions that require the most attention from among plant information that is flooded at the time of an abnormality or an accident, causal relationship information, etc. It is an object of the present invention to provide a plant monitoring device that can be displayed in real time according to the plant situation in a form that is easy for operators to understand.

[0014]

A plant monitoring apparatus according to the present invention uses a data collecting section for periodically collecting process data from a plant device and a process data collected by the data collecting section for a plant important matter. Based on the plant important function model vertex node derivation processing unit that derives the plant function that the operator should pay the most attention from among the function models, and the plant important function model vertex node obtained from the plant important function model vertex node derivation processing unit And a window screen selection unit that selects a window screen to be displayed from the evaluation result of each function node, determines its layout, and automatically generates the display screen. Let me check if the type and layout of the above window is the same as the one before one cycle,
If different, the screen display is automatically switched as a new screen.

[0015]

The plant monitoring apparatus according to the present invention uses the window screen selection unit to make the information about the most noticeable plant function to be presented to the operator and the causal relationship information thereof stand by as independent window information, and the status of the plant. Automatically select the information to be presented according to the plant important functional model, and automatically generate the CRT screen configuration by combining the waiting windows.
At this time, the plant status is monitored for each cycle, and only when the screen configuration content (combination of display windows) to be displayed is different from the configuration content of one cycle or earlier, the CRT screen of the new configuration is automatically switched, and the operator is planted. Provide timely information depending on the situation.

[0016]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 51 is a detector that detects and outputs a process signal from a plant device, 52 is a data collection unit that periodically collects the detected process data, 53
Temporarily stores the data collected by the data collection unit 52,
This is an online plant data buffer for storing.

Reference numeral 54 is a plant important function model vertex node derivation processing unit that uses the data of the online plant data buffer 53 to derive a plant function that the operator should pay the most attention from among the plant important function models.

Reference numeral 55 is a window screen selecting section for selecting a window screen to be displayed from the evaluation result of each function node based on the plant important function model vertex node, determining its layout, and automatically generating the display screen.

Further, 56 compares whether the displayed screen configuration contents (window type, layout) are the same as the screen configuration contents one cycle before, and if they are different, a new screen is displayed. Is a CRT screen automatic display control unit for automatically switching the screen display.

FIG. 2 shows an example of the plant important function model. In this example, 1 is a plant function "core heat removal" function located at the highest level, and as functions that support the function, "Primary coolant holding water amount control" function 2, "Primary cooling pressure control" function 3, " The "maintain primary coolant flow rate" function 12 is arranged hierarchically.

Further, as shown in the following nodes, "filling control" function 4, "RCS (primary cooling system) boundary (liquid crystal part) maintenance" function 6, "RCS boundary (vapor phase part) maintenance" function 7, ""Primary coolant pressure control system" function 8,
Nodes such as “pressurizer heater” function 9 are hierarchically classified.

Next, the operation will be described. FIG. 3 is a flowchart showing the procedure of the driving support screen display processing in the event of an abnormality or an accident. According to this, by using the online data acquired in the plant data input process of step ST71,
Each node of the plant important function model is evaluated (step ST72). An analog value from 0.0 to 1.0 is output as the evaluation value, and when 0.0 is normal, when it is 1.0, it is abnormal.

Here, it is assumed that the node evaluation value becomes the state shown in the evaluation result list of FIG. 5 depending on the state of the plant data. In this case, the focus node derivation processing unit of the attention of the plant important function model of the plant monitoring device of the present invention,
A node in an abnormal state is derived from the evaluation value in the figure (step ST73), and the most noteworthy function of the plant functions (hereinafter referred to as the focus of attention) is the "primary coolant pressure control" function, Output.

Next, in the window arrangement control, a window group to be displayed as a window is selected and a layout is determined from the derived focus model of attention. Then, the automatic display control of the CRT screen is performed according to this layout (step ST75).

FIG. 4 shows a detailed processing flow chart of the arrangement control of the windows. To describe this, first, the focus window of attention is selected from the focus nodes of the attention derived by the focus node derivation processing unit of attention of the plant important function model in step ST81 (step ST9).
1).

Here, the node name and the display window are 1
There is a correspondence of 1 and the focus window of attention is uniquely determined from the derived focus node of attention (step ST92). The information to be displayed by this window is composed of information related to the focus node of attention, and its form is an element represented by a digital value, a trend graph and a graphical system diagram.

Next, a method of deriving the ripple influence window in step ST92 will be described. Deterioration of the focus node of attention can lead to events that threaten functions one level higher in plant importance. The functional node that is one step higher than the focus node of this attention is called a ripple influence node. The ripple influence node can be extracted from the focus node of attention and the structural data of the plant important function model (step ST90).

In the example of FIG. 2, when the focus node of attention is the "primary coolant pressure" function 3, the ripple influence node corresponds to the "core removal" function 1. The window containing the information of the ripple influence node is defined as the ripple influence window. The ripple influence window has a one-to-one correspondence with the ripple influence node, and in the process of step ST91, the ripple influence window is uniquely determined from the node name. The ripple influence window is displayed and output on the CRT at the same time as the attention focus window.

Next, a method of deriving the cause candidate window will be described. When the attention focus is derived and the information content of the node is not directly related to the name of the equipment owned by the plant, the attention focus node is the upper node among the nodes of the plant important function model. .

Therefore, there is another cause of the focus of attention being determined at the focus node of attention. A plurality of frameworks are prepared by using a node that may have the cause information as a cause candidate node. The cause candidate node is the lowest node of the plant important functional model with the focus node of attention at the top.

Usually, there are a plurality of lowest nodes.
In order to output all of these lowest node information on the CRT screen, there is a limit to the amount of display information, so in the present invention, several pieces (finite number) of pieces of information are output. In this embodiment, three cause candidate nodes are selected and the display priority order is determined according to their contents.

First, a group of subordinate nodes of the node tree having the focus of attention as the vertex is derived from the focus node of attention and the plant important function model structure database 93 (step ST82). In the example of FIG. 2, when the focus of attention is the “primary coolant pressure control” function 3, the lower node group is the broken line 11
"RCS boundary (liquid phase part)" function 6 nodes, "RCS boundary (vapor phase part)" function 7 nodes, "pressurizer pressure control system" function 8 node and "addition" The function of "pressure heater" is 9 nodes.

Next, the lowest node is selected from the lower node group of the focus of attention (step ST83). Whether or not the derived node is the lowest node is described by the plant important function model node database 94 that each node uniquely owns. The static priority of the node data list of FIG. 5 is a part of the database, and in this embodiment, the nodes having static priorities of 400 to 499 are the lowest nodes.

In FIG. 5, nodes 5, 6, 7 and 8 are derived as the lowest nodes. Three cause candidate nodes are derived from these nodes. First, the priority order of nodes is determined by the evaluation value data of these nodes (step ST84). In FIG. 5, since the evaluation value data of each node are all 0, the priority cannot be determined only by the evaluation values. In that case, if the data have the same evaluation value data (step ST85), the priority order among the nodes is determined using the plant important function model node database 94 (step ST86).

In this embodiment, the priority order is determined in the ascending order of static priority values in the node database. In the example of FIG. 5, the priority order of the nodes selected from the static priorities of the nodes 5, 6, 7 and 8 is nodes 7, 6, 8 and 5 (step ST87), and the number of windows displayed is limited to three. Since this is an example, windows 123, 124, 125 are displayed as shown in the CRT screen display example of FIG. 7 (steps ST88, 89). Here, 121 is a core heat removal window, 122 is a primary coolant pressure control window, 126 is a diagnostic result window, 127 is a guidance window, and 128 is a request key window.

Further, when the state of the plant changes and the online database shown in FIG. 6 is obtained, the nodes No. 2, 3, 6 having a high evaluation value are selected. Of these, the No3 node having the highest static priority becomes the focus node of attention.
When the focus node of attention is determined, the screen is automatically configured by the same process as in FIG. 5, and the screen is displayed in the configuration as shown in FIG. In the focus window of attention, information is presented in the form of information such as numerical values and trends as shown in FIG.

Here, 101 is a window for core heat removal, 102 is a window for controlling the amount of water contained in the primary coolant, and 1 is a window.
03 is the window of the RCS boundary (liquid phase part), 10
4 is a window of the RCS boundary (vapor phase part), 105
Is a filling flow rate control system window, 106 is a guidance window, 107 is a diagnostic result window, and 108 is a request key window.

Example 2. In the above embodiment, the case where the focus window of attention, the ripple influence window screen, and the cause candidate window screen are simultaneously displayed on one CRT display device like the CRT screen of FIG. 8 has been described. As shown, only the label (title) of each window is displayed in the window, and connected with a straight line so that the relationship between windows can be understood, and at a glance the situation of functions around the focus function of attention in the plant important function model can be seen. You can also display a screen that you can understand.

The information in the box shown in FIG. 9 is the node name of the plant important function model and corresponds to the title of each window shown in FIG. As means for indicating the state of each node, the frames 202 and 20 of FIG.
It is also possible to change the color arrangement of No. 3 so that it is possible to understand at a glance which of the plant functions is in an abnormal state.

On the CRT screen, a part of the plant important function model screen that includes the focus of attention is displayed so that the position of the focus node of the attention on the screen can be immediately seen.
An arrow or the like is added as indicated by the key 204 of.

Further, the frames 205, 206, 207, 208 of FIG. 9 are shown so that the states of the surrounding plant functions can be understood.
By touching the arrow shown in, the screen can be scrolled in that direction and other functional statuses in the plant important functional model can be confirmed.

[+] Key 210, "-" in the screen
The screen can be paged out (largely scrolled) by touching the key 211, and the original display screen can be returned by touching the “R” key 209.

Further, when it is desired to check the detailed information of each node, by touching the node name, a detailed window 220 in which the detailed information is described is popped up and displayed. FIG. 10 shows a detailed window 22 as a display example.
0 is displayed. When the key 221 in the detail window 220 is touched, the detail window 220 is closed and the display of FIG. 9 is returned to. In the detail window 220,
Monitoring parameters related to each node are displayed.

Example 3. The display method used in FIGS. 9 and 10 has been described in the case of displaying the current operation monitoring parameters and trends such as trend monitoring information in the detail window. However, another changeover switch is installed on the operation control panel or the like. It is also possible to present the maintenance information of the equipment related to each node.

FIG. 11 shows an example of a window display (maintenance window) when the maintenance information and the monitoring information are displayed at the same time. The maintenance information is separately stored in another area in the storage device of the system and stored in the detail window 232. "Maintenance" key 2
A touch request for 33 is called as the maintenance window 234. Maintenance information displayed 23
Reference numeral 4 displays a failure history (date and time of failure in the past, status, details of measures to be taken, maintenance personnel, etc.) and measures to be taken.

Example 4. Further, when the "maintenance" key in the request key 108 is touched in the same configuration as the display example of the CRT screen in FIG. 8 and then each window is touched,
A window 234 describing the maintenance information described with reference to FIG. 11 is popped up so that it does not overlap the already displayed window of the corresponding node, and operation monitoring information (automatic presentation) and maintenance information can be submitted at the same time. A display example of the maintenance window 235 is shown in FIG.

Therefore, with the introduction of this display function, the information to be monitored urgently is automatically presented to the operator, and when the maintenance work becomes necessary depending on the content, the information can be obtained by the request operation. The operator can smoothly realize the dialogue function to the system according to the urgency at the time of driving.

Example 5. In each of the above embodiments,
As shown in FIG. 13, the CRT shown in FIG. 8 is used for the purpose of simultaneously monitoring detailed operation information of abnormal functions and the status of the entire functions.
The screen is displayed on the CRT display device 243 near the operator 245 on the control console 242, and the screen of FIG.
It is also possible to display each one.

That is, since the system automatically selects the most noticeable information at the abnormal location of the function and presents the detailed information, the workload of the operator on the information selection can be reduced.

At the same time, the screen of FIG. 9 is constantly displayed on the large display device 241 so that the status of other abnormal parts can be seen at a glance, and the information is simple information, so that the functional states of as many plants as possible can be confirmed. To monitor the status of all functions. Since the large display device 241 is used, the touch operation as in the embodiment of FIG. 9 becomes difficult. Therefore, the request operation is performed using the mouse 244 from the control console 242.

Example 6. In consideration of compatibility with conventional equipment, the CRT display device 243 for the operator 245 is not displayed in the window form as shown in FIG.
It is also possible to allocate the CRT screen of the conventional equipment having the most functionally deep relation to the attention focus node and automatically display each time the attention focus node is updated.

Here, the focus node of attention in this case and C
FIG. 14 shows an example of a database of RT screen names. The system of the CRT screen corresponding to the node information of the attention derived based on such a database is selected and displayed.

Therefore, in this embodiment, only the focus logic of attention and the automatic display logic are added to the existing plant monitoring equipment, and it is not necessary to develop a new screen or add screen software, which is the simplest method. The focus information presentation function of attention can be realized at low cost.

[0054]

As described above, according to the present invention, a plant important function model is constructed by using a data collecting section for periodically collecting process data from plant equipment and the process data collected by the data collecting section. Based on the plant important function model vertex node derivation processing unit for deriving the plant function that the operator should pay the most attention from among, and the plant important function model vertex node obtained from the plant important function model vertex node derivation processing unit, A window screen selection unit that selects a window screen to be displayed from the evaluation result of each function node, determines the layout and automatically generates the display screen, and displays the above-mentioned window in the CRT screen automatic display control unit. Check if the type and layout are the same as the one before, and if they are different, display a new screen. Since it is configured to automatically switch the display, it is possible to reduce the psychological burden on the operator such as the selection of necessary information and operation judgment when a plant abnormality or accident occurs, and consider strengthening monitoring of the function of the entire plant. In addition, it is possible to obtain a safer plant operating environment.

[Brief description of drawings]

FIG. 1 is a system configuration diagram showing a plant monitoring apparatus according to an embodiment of the present invention.

FIG. 2 is a hierarchical classification diagram showing a plant important function model obtained from plant data in the present invention.

FIG. 3 is a flowchart showing a display processing procedure of a driving support screen at the time of an abnormality or an accident in the present invention.

FIG. 4 is a flowchart showing a processing procedure of a window arrangement control unit in the present invention.

FIG. 5 is a table showing the contents of an online database of plant important function models in the present invention.

FIG. 6 is a table showing the contents of an online database of plant important functional models after a change in plant state.

FIG. 7 is an explanatory diagram showing a display example of a CRT screen according to the present invention.

FIG. 8 is an explanatory diagram showing another display example of the CRT screen according to the present invention.

FIG. 9 is an explanatory diagram showing another display example of the CRT screen according to the present invention.

FIG. 10 is an explanatory diagram showing still another display example of the CRT screen according to the present invention.

FIG. 11 is an explanatory diagram showing still another display example of the CRT screen according to the present invention.

FIG. 12 is an explanatory diagram showing still another display example of the CRT screen according to the present invention.

FIG. 13 is a system configuration diagram showing a monitoring and screen displaying method according to the present invention.

FIG. 14 is a table showing the contents of the database of the focus node of attention and the name of the CRT screen according to the present invention.

FIG. 15 is a system configuration diagram showing a conventional plant monitoring device.

[Explanation of symbols]

 52 data collection unit 54 plant important function model vertex node derivation processing unit 55 window screen selection unit 56 CRT screen automatic display control unit

Claims (1)

[Claims] 1. A plant that an operator should pay the most attention to from a plant important functional model using a data collection unit that periodically collects process data from plant equipment and process data collected by the data collection unit. A plant important function model vertex node derivation processing unit for deriving a function, and a window to be displayed from the evaluation result of each function node based on the plant important function model vertex node derivation processing unit obtained from the plant important function model vertex node derivation processing unit Select a screen, determine its layout and automatically generate a display screen, and check whether the window type and layout of the above window being displayed are the same as those of the previous cycle, and if different, Has a CRT screen automatic display control unit that automatically switches the screen display as a new screen. apparatus.