JPH063482A - Method and system for displaying alarm of nuclear power plant - Google Patents

Abstract

PURPOSE:To make it possible for an operator to discriminate easily by classifying alarm display windows into the ones for a group of alarms indicating abnormality and the ones for a group of alarms indicating states of operations of a system. CONSTITUTION:An alarm (ANN) display panel 10 installed in a main control room 11 is divided roughly into an alarm display part 16 indicating abnormality of a plant and the like and an alarm display part 17 indicating states of operations of a system. On the field side of a nuclear power plant, on the other hand, a system controller 20 is provided so that it corresponds to each system, and a process measurement signal of each system is taken in as a discrete alarm signal. When a process value obtained by processing this signal exceeds an ANN set value stored in the controller 20, a digitized ANN signal is inputted to an ANN controller 22 and others through a transmission network 21. The controller 22 processes ANN signals logically, collecting them, putting them together and classifying them into a group of alarms indicating abnormality of the plant and a group of alarms indicating states of operations of the system. The classified ANN signals are sent to the display parts 16 and 17 of the display panel 10 and thereby ANN windows needed are lighted and made to display.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warning display method and a warning display system for a nuclear power plant, and more particularly to a nuclear power generation in which an operator can quickly and accurately grasp plant abnormalities and system operating states. The present invention relates to an alarm display method for a plant and an alarm display system thereof.

[0002]

2. Description of the Related Art Generally, in a nuclear power plant such as a nuclear power plant, an alarm from the plant (hereinafter referred to as ANN) is used.
Say. ) Is notified to the operator, a plurality of control panels are installed in the central control room, and each control panel has a total of 10
There are more than 00 alarm display windows (hereinafter referred to as ANN windows).

FIG. 4 is a plan view showing a layout example of a control panel 2 installed in a central control room 1 of a boiling water reactor. The control panel 2 includes a main panel 2a and sub-panels 2b and 2c. Become. The display parts 3 of the main board 2a and the sub boards 2b and 2c are formed with more than 1000 ANN windows in total. Each A
The NN windows are color-coded into several types according to the degree of importance necessary for plant operation, and a device for enhancing the distinguishability between the ANN windows is made.

[0004]

In the conventional alarm display system for a nuclear power plant, the ANN window is color-coded into several types according to the importance as described above.
The NN windows that have almost the same size and are considered to be important from the standpoint of plant operation are all treated as important. That is, for example, important things as abnormalities of the plant such as low reactor water level and high reactor pressure and important operation states of the system such as the operation of an important system (system) are displayed in the ANN window of the same display area. The same display method is used.

Therefore, at the time of a trip event of the nuclear power plant where many ANN windows are lit, the operator must select the abnormality of the nuclear power plant from the lit state of many ANN windows and grasp the plant state. This is an obstacle to the operator's quick and accurate grasp of the operating status of the plant.

Further, most of the ANN windows exceeding 1,000 are used for reporting a minor failure of many systems, and the ANN indicating the abnormal state of the plant or the operating (operating) state of the main system to be truly recognized. The windows are buried in a large number of ANN windows that display a slight operating state of the system, and there is a risk of operator's erroneous operation.

The present invention has been made in consideration of the above-mentioned circumstances, and it is possible to identify the abnormality of the plant and the operating state of the system by
An object of the present invention is to provide a warning display method for a nuclear power plant and a warning display system for the same, which can be identified very easily by an operator. Another object of the present invention is to provide an alarm display of a nuclear power plant, which enables an operator to quickly and accurately grasp the situation when an abnormality occurs in the nuclear power plant, and to easily determine a corresponding operation. A method and its alarm display system are provided.

[0008]

In order to solve the above-mentioned problems, the alarm display method for a nuclear power plant according to the present invention has the following features. The alarm signals shown in FIG. 1 and the alarm groups indicating the operating state of the system are classified, and the alarm signals generated in the nuclear power plant are divided into each alarm group, and at least one of the display location, display color, and display size is different. This is a method of displaying in the alarm display window of each alarm group to be activated.

In order to solve the above-mentioned problems, the alarm display method for a nuclear power plant according to the present invention, as set forth in claim 2, has an alarm display window of an alarm display panel and an alarm group indicating an abnormality. And a group of alarms indicating the operating state of the system, and the group of alarms indicating the abnormalities is the first-level plant abnormal alarm group requiring the operation of the safety system of the nuclear power plant and the operation of the safety system. A second level plant abnormality alarm group and a system abnormality alarm group indicating a failure of each system of a nuclear power plant, and an alarm group indicating the operating state of the system is classified into a first level indicating a safety system operation. Of the plant operation alarms, the second level plant operation alarms indicating the operation of the normal system, and the system operation alarms indicating the operation of the system as a result of the manual operation of the operator. The alarm information displayed in these alarm groups is aggregated for each level and integrated, and the alarm display windows that differ in at least one of the display location, display color, and display size are divided by level. It is something to display.

Further, in order to solve the above-mentioned problems, the alarm display system of the nuclear power plant according to the present invention has an alarm display panel installed in the central control room of the nuclear power plant as described in claim 3. In addition, this alarm display panel is provided with a plurality of alarm display windows for classifying and displaying the alarm information of the nuclear power plant into an alarm group indicating an abnormality and an alarm group indicating the operating state of the system. Indicates that at least one of the display location, display color, and display size is different for each alarm group.

Further, in order to solve the above-mentioned problems, the alarm display system for a nuclear power plant according to the present invention has a system controller for fetching an individual alarm signal generated in a nuclear power plant, as set forth in claim 4. And an ANN controller that logically processes the alarm signal from the system controller into an alarm group indicating a plant abnormality and an alarm group indicating an operating state of the system, and alarm information processed by the ANN controller. An alarm display panel that changes the display location and display size according to the degree of importance of plant abnormality and system operation status, and information processing that inputs and processes individual alarm signals indicating the system operation status from the system controller The equipment and the output from this information processing equipment make plant abnormalities and system operating status important. Flip with those having a variable display capable display.

[0012]

In the present invention, the alarm group indicating the abnormality and the alarm group indicating the operating state of the system are provided in the alarm display window (ANN).
The ANN windows of the alarm groups differ from each other in at least one of the display location, display color, and display size. For this reason, the operator must confirm whether the abnormality of the nuclear power plant is a plant abnormality display,
It is possible to identify very easily whether it is an operation status display of the system. In the nuclear power plant alarm display method and the alarm display system according to the present invention, the nuclear power plant alarm is roughly divided into an alarm group indicating an abnormality and an alarm group indicating the operating state of the system, Each of these alarm groups is further classified into three levels of alarm groups according to the degree of importance, and these alarm groups are aggregated and grouped for each level to reduce the number of alarms. Then, the respective reduced alarm information is displayed in the ANN window separately for each level. Moreover, the ANN windows of each level are different from each other in at least one of the display location, display color, and display size.
Therefore, when an abnormality occurs, the operator can quickly and accurately grasp the situation and easily decide the corresponding operation.

Further, the plant operating state of the nuclear power plant is displayed in the ANN window of the alarm display panel while being classified and systematized into plant abnormalities and system operating states, while showing the system operating state from each system controller. The individual alarm signal is signal-processed by an information processing device such as a process computer, and the operating state of the processed system can be sequentially variably displayed on a display according to its importance.

As described above, according to the present invention, when an abnormality occurs in the nuclear power plant, the abnormal state of the plant that should be truly recognized and the operating state of the main system can be classified, organized and systematically displayed, and the entire ANN window can be displayed. The number can be reduced and plant abnormalities and system operating states can be accurately and easily identified.
Therefore, when an abnormality occurs, it is possible to quickly and appropriately grasp the situation of the operator and easily and appropriately make a judgment necessary for the corresponding operation based on the grasp of the situation.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a system configuration example showing an alarm display system of a nuclear power plant according to the present invention.
Reference numeral 10 in the figure denotes a large-sized alarm display panel (hereinafter referred to as ANN display panel) installed in a central control room 11 serving as a central operation room. This ANN display panel 10 has a large-scale alarm section 12
And a large mimic portion 13 and a variable display portion 15 having a large screen 14. Large screen 14
A message is displayed for each individual alarm item of the nuclear power plant alarm.

The large-scale alarm unit 12 is formed with a plant-level alarm display unit 16 for displaying a plant abnormality or the like of a nuclear power plant, and the large-scale mimic unit 12 collectively collects the operating states of the system (system). A system level alarm display unit 17 to be displayed is formed. This ANN display board 1
0 is roughly classified into an alarm display section 16 indicating a plant abnormality and the like and an alarm display section 17 indicating a system operation state and the like.

On the other hand, on the site side of the nuclear power plant,
A system controller 20 as a site-side control panel is installed corresponding to each system, and a process measurement signal for each system is taken into each system controller 20 as an individual alarm signal. The fetched process measurement signal is subjected to signal processing by a logic circuit (not shown), and when the process value exceeds the ANN set value stored in advance in the system controller 20, the digitized ANN signal is transmitted by an optical transmission method or an electric signal. Transmission network 21 such as data line
The information is input to the ANN controller 22 and the information processing device 23 such as a process computer via the.

Both the ANN controller 22 and the information processing device 23 are installed on the side of the central control room 11. The ANN controller 22 processes the input ANN signals by logic processing, collects and collects them, and classifies them into an alarm group indicating an abnormality such as a plant abnormality and an alarm group indicating an operating state of the system. The ANN signal of each classified alarm group is the ANN display panel 1
0 to the plant-level alarm display unit 16 and the system-level alarm display unit 17, and the respective alarm display units 16 and 17 are sent.
The required ANN window of is lit up and displayed.

Further, the AN from the ANN controller 22
The N signal is also input to the information processing device 23 and signal-processed, and the processing result is displayed on a display 26 such as a CRT of a bench 25 as a control room installed in the main control room 11. The display 26 is, for example, a touch screen type, and variably displays plant abnormalities, system operating states, and the like.

The alarm (ANN) of the nuclear power plant displayed on the ANN display panel 10 is divided into several alarm groups and displayed on the ANN window of each alarm display unit 16 and 17.

The ANN of a nuclear power plant is roughly divided into an alarm group indicating an abnormality and an alarm group indicating an operating state of the system. As shown in FIG. 2, [plant and system (system)] * [abnormality and system] Operating state]. Further, both alarm groups are divided into three levels according to the degree of importance, so that a total of six types of alarm groups can be divided.

As the first level of the alarm group indicating abnormality,
A plant abnormality indicating a level of plant abnormality (for example, reactor pressure height, neutron flux height, drywell pressure height, etc.) that requires the operation of a safety system provided to maintain the safety of a nuclear power plant An alarm is selected, and this first-level plant abnormality alarm group is aggregated into, for example, 25 ANNs and integrated. The 25 ANNs are the first as shown in FIG.
The ANN windows of the first display area 7a and the second display area 27b of the display unit 27 are lit and displayed.

In the first display area 7a, the four major events leading to the nuclear power plant accident [reactor scrum, turbine trip, MSIV (main steam isolation valve) closing logic operation, generator trip] are displayed in a large ANN window. Then, in the second display area 27b, main events related to plant-level safety are aggregated / collected and displayed in the ANN window.

As the second level of the alarm group indicating abnormality,
Although the safety system does not operate, a plant abnormality alarm indicating a plant abnormality of a level that requires operator monitoring and manual operation as required is selected. This second level plant abnormality alarm group is selected. Are aggregated into, for example, 11 ANNs and are collectively displayed on the ANN window. Then, the 11 ANNs are displayed in each ANN window of the second display unit 28 as shown in FIG.

As the third level of the alarm group indicating abnormality,
A system abnormality alarm indicating a simple failure of each system is selected, and this third level system abnormality alarm group is grouped in a system unit and each ANN window of the third display unit 29 shown in FIG. Is displayed.

On the other hand, as the first level of the alarm group indicating the operating state of the system, the plant operation alarm indicating the operating state of the safety system is selected. For example, 16 ANNs are aggregated and grouped by system. And
The 16 ANNs are displayed in the third display area 27c of the first display section 27, as shown in FIG.

As the second level of the alarm group showing the operating state of the system, a plant / operation alarm showing a system operation for preventing or mitigating a plant abnormality in a system called a normal system although it is not a safety system Is selected, and this second level plant / operation alarm group is integrated into, for example, 5 ANNs and integrated. The five ANNs are displayed in the fourth display area 31 of the first display section 27, as shown in FIG. The fourth display area 31 may be arranged in the second display unit 28 or adjacent to the second display unit 28.

As the third level of the alarm group showing the operating state of the system, there is a system operation alarm showing the system operating state as a result of the operation of the operator (provided for the purpose of alerting the operator). The system operation alarm group of the third level is selected by system and is displayed on each ANN window of the third display unit 29 shown in FIG. A system abnormality alarm is also displayed on the third display unit 29 in different colors.

The first display area 27a and the second display area 2
7b and the ANN window of the third display area 27c are
The size is larger than that of the N window, and they are collectively arranged in the first display unit 27 so that the operator can easily confirm them.

As shown in FIG. 3, the second display unit 28 is arranged in the vicinity of the first display unit 27 of the first level, and the ANN window of the second display unit 28 is the display region 2 of the first level.
It is designed to be smaller than the ANN windows 7a and 27b, or to be displayed in different sizes with the same size.

As shown in FIG. 3, the second-level display area 31 of the operating state of the system is arranged in the vicinity of the first-level display area 27c of the first display section 27, and its ANN. The window is smaller than the ANN window in the display area 27c or has the same size and is displayed in different colors.

Also, the third level ANN of the system abnormality
The faults in the system are classified into two types, that is, a major fault and a minor fault, and each system is displayed with a small ANN window in different colors. For example, a serious failure is AN
The N window is lit and displayed in red, and for minor failures, the ANN window is lit and displayed in yellow. Specifically, this corresponds to a major failure or a minor failure of the reactor residual heat removal system (RHR).

Here, the major failure means a failure in which the function of the system (system) is deteriorated or lost, and the minor failure is a failure in which the function is not affected (for example, multiple failures). If one of the sensors being activated has failed).

Therefore, each of the display units 27, 28, 29
The ANN window of is a collective display of the conventional ANNs, but the individual detailed information does not necessarily have to be provided to the operator as the first information of the ANN. Therefore, in this embodiment, a plurality of indicators 26 are provided on the bench 25 as shown in FIG. 2, and detailed information of each is displayed on the screen of each indicator 26 by a touch operation of an operator or automatically. Variably displayed.

That is, each of the display units 27, 28, 29
As shown in FIG. 1, the ANN controller 22 controls the lighting and flicker, and the display 26 such as each CRT is processed by the information processing device 23 by the operation of the touch screen. The display is controlled.

Next, the operation of this embodiment will be described.

When the process value input to each system controller 20 exceeds the preset ANN set value, each system controller 20 outputs an ANN,
This ANN output is input to the ANN controller 22 and the information processing device 23 such as a process computer.

The ANN controller 22 receives the input A
The NN signal is processed by a built-in logic (OR logic) and output to predetermined display units 27, 28 and 29, and the ANN window is lit / flicker controlled.

On the other hand, the information processing device 23 receives the input A
Based on the NN signal, display control is performed by the built-in CRT display software, and a display device 26 such as each CRT is provided.
Is used to variably display individual alarm information.

In this information display system, there are more than 1000 ANNs that can occur in a nuclear power plant.
Are displayed in a small number of ANN windows in a state that they are divided into contents (plant abnormalities, system operating states) and levels (importance), and are aggregated and integrated, so the situation at the time of an abnormal situation can be displayed by the operator. Can be grasped quickly and accurately. Therefore, it is possible to easily determine the handling operation for the abnormality.

As described above, this alarm display system divides the alarm information from the nuclear power plant into (a) abnormal display and system operating state display, and (b) abnormal level (plant level abnormal and system level). Error), (c) System operation status display is divided into system operation and operation result operation status, and (d) System operation (operation status) is divided into safety system and normal system operation. The items are classified and organized by dividing them into items, and at least one of the display place, the size of the display, and the display color is appropriately changed and assigned for each category.

Although not particularly described in the above embodiment, the ANN controller 22 has the logic of "suppression" such that the alarm lighting is not output to the ANN window when the turbine or the generator trips by the normal manual operation. It may be added to. And in this case, the distinctiveness of the alarm can be further improved.

[0044]

As described above, according to the present invention, the alarm of the nuclear power plant is divided into the alarm group indicating the abnormality and the alarm group indicating the operating state of the system, and the display window of each alarm group is displayed. Since at least one of the location, display color, and display size is made different,
The operator can very easily and accurately distinguish between the plant abnormality and the system operating state.

Further, in the present invention, the alarm is divided into an alarm group indicating an abnormality and an alarm group indicating the operation of the system, and
Each alarm group is further classified into three alarm groups according to the degree of importance, and these alarm groups are aggregated and grouped for each level to reduce the number of display windows. Since at least one of the display location, display color, and display size of the display window is different, the operator can grasp the situation promptly and accurately in the event of an abnormality, and It is possible to easily determine the corresponding operation for.

[Brief description of drawings]

FIG. 1 is a system configuration diagram showing an embodiment of an alarm display system for a nuclear power plant according to the present invention.

FIG. 2 is a diagram showing an example of a matrix display of abnormalities in a nuclear power plant and system operating states according to the present invention.

FIG. 3 is an explanatory diagram showing classification and allocation of alarms in the alarm display system for a nuclear power plant according to the present invention.

FIG. 4 is a plan view showing a layout of ANN numbers and ANN windows in a conventional alarm display system for a nuclear power plant.

[Explanation of symbols]

 10 Alarm Display Panel 11 Central Control Room (Central Control Room) 12 Large Alarm Section 13 Large Mimic Section 14 Large Screen 15 Variable Display Section 16 and 17 Alarm Display Section 20 System Controller (Field Control Panel) 22 ANN Controller 23 Information Processing Device ( Process computer) 25 Bench panel (control panel) 26 Display (CRT) 27 First display section 28 Second display section 29 Third display section

Claims (4)

[Claims] 1. An alarm display window of an alarm display panel is classified into an alarm group indicating an abnormality and an alarm group indicating an operating state of a system, and an alarm signal generated in a nuclear power plant is divided into each alarm group and displayed at a display location. An alarm display method for a nuclear power plant, characterized by displaying in an alarm display window of each alarm group having at least one of display color and display size different. 2. The alarm display window of the alarm display panel is classified into an alarm group indicating an abnormality and an alarm group indicating an operating state of the system,
The alarm group indicating the abnormality includes a first level plant abnormality alarm group that requires the operation of the safety system of the nuclear power plant and a second level plant abnormality alarm group that does not reach the operation of the safety system and the nuclear power plant. A system abnormality alarm group indicating a failure of each system, and an alarm group indicating an operating state of the system are classified into a first level plant operation alarm group indicating a safety system operation and a normal level system operation alarm group. It is divided into a two-level plant operation alarm group and a system operation alarm group showing the operation of the system as a result of manual operation by an operator, and the alarm information displayed in these alarm groups is aggregated for each level. A nuclear power plant characterized in that the alarm display windows are grouped into one and are different from each other in at least one of a display location, a display color and a display size, and are displayed separately for each level. Broadcast display method. 3. An alarm display panel is installed in a central control room of a nuclear power plant, and alarm information of the nuclear power plant, an alarm group indicating an abnormality, and an alarm group indicating an operating state of the system are provided on the alarm display panel. Nuclear power generation characterized by comprising a plurality of alarm display windows that are classified into and displayed, and at least one of the display location, display color, and display size of each alarm display window is different for each alarm group. Plant alarm display system. 4. A system controller that takes in an individual alarm signal generated in a nuclear power plant, and an alarm signal from this system controller is classified into an alarm group indicating a plant abnormality and an alarm group indicating a system operation state and logic. An ANN controller for processing, an alarm display panel for displaying the alarm information processed by the ANN controller by changing the display location and the display size according to the importance of the plant abnormality or the system operation state, and the system controller An information processing device that inputs and processes individual alarm signals that indicate the operating status of the system, and an output from this information processing device that can variably display plant abnormalities and system operating status according to their importance. An alarm display system for a nuclear power plant, comprising: