JPH05233982A - Plant alarm device - Google Patents

Abstract

PURPOSE:To quickly restore an input point abnormal state by deciding another alarm state on a signal which is judged to be an abnormal state, displaying the abnormal state of the signal, and enabling alarm display owing to plant signal abnormality to be executed in addition to alarm display when a plant is normal. CONSTITUTION:When one of the states of a plant signal group PS which is inputted to a plant alarm device CP changes, an alarm signal processing part S1 judges Whether a changed plant signal means alarm occurrence, alarm recovery or input point abnormality occurrence through the use of state judgement data stored in an alarm state storing part S3. When the state of an input point means alarm occurrence, the alarm signal processing part S1 judges the contents of alarm data which is stored in the alarm state storing part S3. When the preceding state is an alarm normal state, for example, an alarm recognition state, an alarm recovery state, an alarm reset state, the input point abnormality state and an input point abnormality recovery state are reset, an alarm occurrence state is set and an alarm display part S4 is started.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plant alarm system capable of centrally monitoring plant alarms and confirming individual alarms.

[0002]

2. Description of the Related Art In a large-scale plant such as a nuclear power plant, the operation and control of the plant are generally performed by performing centralized monitoring and remote control in a central operating room. In such a plant, there is a plant alarm device as one of means for providing a plant operator with information necessary for operating the plant.

FIG. 6 shows an example of the configuration of a conventional plant alarm system. In the figure, the plant alarm device Cp includes an alarm signal processing unit S1, an operator input processing unit S2, an alarm state storage unit S3, an alarm display unit S4, an alarm display data storage unit S5, and an operator input determination unit S6. And an alarm item processing section S7, an operation content storage section S8, a display device D, and an operator input device T.

The alarm signal processing unit S1 includes a plant signal group P
The state change of the alarm signal in s is detected and stored in the alarm state storage section S3, and the alarm display section S4 is activated.
The operator input processing unit S2 inputs a confirmation operation (alarm confirmation operation or alarm reset operation) for each alarm from the operator via the operator input device T, and notifies the operator input determination unit S6. In the operator input determination section S6, the coordinates stored in the alarm display data storage section S5 are compared with the operator input. The selected coordinates are stored in the operation content storage unit S8, the alarm item processing unit S7 is activated, and the processing is completed. The alarm item processing unit S7 determines whether the confirmation operation for each alarm is an alarm confirmation operation or an alarm reset operation, and detects which of the four alarm states shown in FIG. 7 for each alarm item. Then, the alarm state of the alarm state storage section S3 is changed and the alarm display section S4 is activated. Alarm display S4
Displays the alarm status on the display device D by classifying the alarm states of the respective alarm items notified by the alarm signal processing unit S1 and the alarm item processing unit S7 as follows.

[0005]

[Table 1] As described above, in the conventional plant alarm device, all the plant alarms can be centrally monitored by the alarm display on the display device D, the alarm confirmation operation by the operator from the operator input device T, or the alarm reset operation. It was also possible to confirm each alarm. Here, the confirmation operation refers to confirmation for alarm generation and confirmation for alarm recovery. Normally, the alarm states are normal alarm state N, alarm generation state A, alarm confirmation state K, as shown in FIG. The state transition between the alarm recovery states R is set, and the alarm occurrence is notified. here,
The alarm state is set with the alarm generation state A as a priority state, and in any state of the alarm normal state N and the alarm recovery state R, when an alarm is generated, the state transitions to the alarm generation state A. This is because, when performing plant monitoring, the plant operator is given first priority to notify the plant operator of the occurrence of a plant alarm, and prompt action is taken.

Even if the plant alarm state returns to the alarm state, if the alarm confirmation is not performed, the alarm return state R
By making the state transition to the alarm return state R after the alarm confirmation operation without making the state transition to (1), the confirmation omission due to the continuous transition of the alarm state does not occur.

[0007]

However, in the conventional plant alarm device, the alarm process is not performed when the configuration input point is abnormal (fuse cutoff, scanner board failure, etc.), or the same as when the alarm is issued. Since the process is being performed, it cannot be determined whether the alarm is due to a configuration input point abnormality or a plant abnormality. In addition, there is a problem that the alarm recovery work when an input point abnormality occurs takes time for the above reason.

The present invention provides a plant alarm device capable of clearly determining, when a plant alarm is generated, whether the alarm is generated or the input point is abnormal, and is capable of quickly recovering from the abnormal state of the input point. With the goal.

[0009]

The plant alarm device of the present invention inputs signals from each part of the plant to determine the alarm state, displays the alarm state of the occurrence state of each alarm item, and displays the alarm condition from the operator. In a plant alarm device that receives a confirmation operation for each alarm item, changes the alarm state to a state after alarm confirmation and reflects the alarm display, an abnormal state determination means for determining an abnormal signal state from each part of the plant, Means for determining an alarm state different from the alarm state for the signal determined to be abnormal by the abnormal state determination means, and displaying the abnormal state of the signal from the determined alarm state on the display device It is characterized in that a means is provided and an alarm display due to an abnormal plant signal can be displayed in addition to the alarm display when the plant signal is normal.

[0010]

According to the present invention, means for determining an abnormal state of plant data is provided separately from the conventional alarm state determination based on the plant data input by the alarm input processing section, and the state of each data is changed. To display the alarm items,
Since the means for displaying the abnormal state of the input point is provided, the alarm display due to the abnormal state of the input point can be performed in addition to the conventional alarm state display.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the configuration of an embodiment of a plant alarm device according to the present invention. The plant alarm device Cp includes an alarm signal processing section S for processing each plant signal group Ps.
1, an operator input processing section S2 for processing an input from an operator, an alarm state storage section S3 for storing alarm data E corresponding to each plant signal group Ps, and an alarm item F as shown in FIG. The alarm display section S4 for displaying the alarm screen on the display device D, the alarm display data storage section S5 for storing the screen coordinate data Z, the operator input determination section S6 for determining the operator's input, and the confirmation operation for each alarm item are performed. An alarm item processing section S7 to be processed, an operation content storage section S8 for storing the operation content J of the operator, an abnormal signal processing section S9 for processing a signal determined to be in an abnormal state by the alarm signal processing section S1, and a display device D. And an operator input device T are provided.

FIG. 3 exemplifies the contents of the alarm state storage section S3 for storing the alarm data E. One alarm data E-1 to E-n includes the state determination data e and all alarms. Display position data i of each alarm item when the item is displayed on the display device, alarm item name data j of the corresponding plant signal group Ps, alarm occurrence state s, and alarm confirmation state t
Information of an alarm recovery state u, an alarm reset state v, an input point abnormality state w, and an input point abnormality recovery state x is stored.

FIG. 4 shows the state transition of the alarm in the device of the present invention. N is an alarm normal state, A is an alarm generation state, K is an alarm confirmation state, R is an alarm recovery state, and B is an input. Indicates an abnormal point.

In the device of the present invention having the above-mentioned structure, when any state of the plant signal group Ps input to the plant alarm device Cp changes, the alarm signal processing unit S1 determines whether the changed plant signal is an alarm generation or alarm recovery. It is determined whether or not the input point abnormality has occurred by using the state determination data e stored in the alarm state storage section S3.

The alarm signal processing unit S1 judges the contents of the alarm data E (hereinafter referred to as the previous state) stored in the alarm state storage unit S3 when the state of the input point is the alarm occurrence, and Perform processing.

(1) When the previous state is the normal alarm state N (alarm reset state v is set), the alarm confirmation state t, the alarm return state u, the alarm reset state v, and the input point abnormal state w and the input point abnormal recovery state x are reset, the alarm generation state s is set, the alarm display S4 is activated, and the processing is completed.

(2) When the previous state is the alarm recovery state R (alarm recovery state u or input point abnormality recovery state x is set), the alarm confirmation state t and the alarm recovery state u
Then, the input point abnormal state w and the input point abnormal recovery state x are reset, the alarm generation state s is set, the alarm display section S4 is activated, and the processing is completed.

(3) When the previous state is the input point abnormal state B (the input point abnormal state w is set), the alarm confirmation state t, the alarm reset state u, the alarm reset state v,
The input point abnormal state w and the input point abnormal recovery state x are reset, the alarm generation state s is set, the alarm display S4 is activated, and the processing is completed.

When the state of the input point is alarm recovery, abnormal input point recovery, or normal, the following processing is performed.

(1) When the previous state is the alarm generation state A (the alarm generation state s is set and the alarm confirmation state t is reset), the alarm generation state s, the alarm reset state v, and the input The point abnormality state w and the input point abnormality recovery state x are reset, the alarm recovery state u is set, the alarm display section S4 is activated, and the processing is completed.

(2) When the previous state is the alarm confirmation state K (the alarm generation state s and the alarm confirmation state t are set), the alarm generation state s, the alarm confirmation state t, and the alarm reset state v are set. The input point abnormal return state x and the input point abnormal state w are reset, the alarm return state u is set, the alarm display section S4 is activated, and the processing is completed.

(3) When the previous state is the input point abnormal state B (the input point abnormal state w is set), the alarm generation state s, the alarm confirmation state t, the alarm reset state u, and the alarm reset state v and the input point abnormal state w are reset, the input point abnormal return state x is set, the alarm display S4 is activated, and the processing is completed.

If the state of the input point is that the input point is abnormal, the abnormal signal processing section S9 is activated to complete the processing.

By the way, in the present invention, when an input point abnormality occurs while the input point state is the alarm generation state A, the alarm generation state A is not directly changed to the input point abnormality state B. .. Normally, when an input point abnormal state occurs, it is considered that the state transition should be made directly to the input point abnormal state, but when the input point state is the alarm generation state A,
If the state transitions to the input point abnormal state B without confirmation of the alarm generation, the alarm generation state may disappear before the plant operator confirms the alarm generation of the plant. Therefore, in the present invention, the state transition is not performed until the confirmation operation by the plant operator is performed. In order to realize this, the abnormal signal processing unit S9
Then, the following processing is performed.

(1) When the previous state is the normal alarm state N (alarm reset state v is set), the alarm generation state s, the alarm confirmation state t, the alarm return state u, and the alarm reset state v And reset the input point error recovery state x,
The abnormal state w of the input point is set, the alarm display S4 is activated, and the processing is completed.

(2) When the previous state is the alarm generation state A (the alarm generation state s is set and the alarm confirmation state t is reset), the alarm recovery state u, the alarm reset state v, and the input The point abnormality recovery state x is reset, the input point abnormality state w is set, the alarm display S4 is activated, and the processing is completed. As a result, the alarm generation state A is maintained, and the alarm generation state A does not directly shift to the input point abnormal state B.

(3) When the previous state is the alarm confirmation state K (the alarm generation state s and the alarm confirmation state t are set), the alarm generation state s, the alarm confirmation state t, and the alarm recovery state u. The alarm reset state v and the input point abnormal recovery state x are reset, the input point abnormal state w is set, the alarm display section S4 is activated, and the processing is completed.

(4) When the previous state is the alarm recovery state R (alarm recovery state u or input point abnormality recovery state x is set), the alarm generation state s and the alarm confirmation state t
The alarm recovery state u, the alarm reset state v, and the input point abnormality recovery state x are reset, the input point abnormality state w is set, the alarm display section S4 is activated, and the processing is completed.

The alarm display unit S4 activated by the alarm signal processing unit S1 and the abnormal signal processing unit S9 stores the alarm data E stored in the alarm state storage unit S3 and the alarm display data storage unit S5. The alarm screen shown in FIG. 2 is displayed on the display device D according to the screen coordinate data Z present. This alarm screen collectively displays all alarm items F on one screen, and displays the alarm generation status for each plant system.
It can be identified by the display color and blinking state.

This display is performed according to the state transition shown in FIG. The details will be described below.

When the alarm display section S4 is activated, the alarm data E is read from the alarm state storage section S3, and the display color and blinking state of the corresponding alarm item F are displayed.
Alarm status data (s, t, u, v,
w, x), the determination D, the display color and the blinking state are determined in the following order.

Blinking red = alarm generation state A When the alarm generation state s is set and the alarm confirmation state t is reset.

Illumination of red = alarm confirmation state K When the alarm generation state s and the alarm confirmation state t are set.

Illumination of white = input point abnormal state B When the alarm generation state s, the alarm confirmation state t, and the input point abnormal state w are set. Or, when the alarm generation state s is reset and the input point abnormal state w is set.

Blinking green = alarm recovery status R When the alarm generation status s and the input point abnormal status w are reset, and the alarm recovery status u or the input point abnormal recovery status x is set.

Illumination of green = alarm normal state N alarm generation state s, alarm confirmation state t, alarm recovery state u
When the input point abnormal state w and the input point abnormal recovery state x are reset and the alarm reset state v is set.

The display color and blinking state determined in this way are displayed on the display device D in accordance with the screen coordinate Z. Also, when activated from the alarm item processing unit S7 described below, the alarm screen is displayed on the display device D by the same process.

On the other hand, when the plant operator wants to request the alarm confirmation / reset for the alarm item, it is necessary to select the alarm item to be confirmed from the operator input device T.

In the operator input processing section S2, the input from the operator is inputted through the operator input device T,
The operator input determination unit S6 is activated. In the operator input determination unit S6, the coordinates stored in the alarm display data storage unit S5 are compared with the operator input, and if there is a coordinate that matches the alarm item, an alarm confirmation or alarm reset operation request is issued for the alarm item F. And the input coordinates are stored in the operation content storage S8, and the alarm item processing unit S7 is stored.
To complete the process. When activated, the alarm item processing unit S7 searches for the corresponding alarm data E from the operation content data J stored in the operation content storage unit S8,
The following processing is performed according to the content of the alarm data E (previous state) stored in the alarm state storage section S3.

(1) When the previous state is the alarm generation state A (the alarm generation state s is set and the alarm recovery state u is reset), it is determined that the alarm generation confirmation operation,
The alarm recovery state u, the alarm reset state v, and the input point abnormal state w are reset, the alarm confirmation state t is set, the alarm display section S4 is activated, and the processing is completed.

(2) When the previous state is the alarm generation state A and the alarm is returned (the alarm generation state s and the alarm return state u are set), it is the alarm generation confirmation operation after the alarm return. Judgment, the alarm occurrence state s, the alarm confirmation state t,
The alarm reset state v and the input point abnormal state w are reset, the alarm display S4 is activated, and the processing is completed.

(3) The alarm recovery state R from the alarm confirmation state K was the previous state (the alarm generation state s has been reset,
When the alarm recovery state u is set), the alarm confirmation state t and the alarm recovery state u are reset, the alarm reset state v is set, the alarm display section S4 is activated, and the processing is completed.

(4) When the previous state is the alarm recovery state R from the input point abnormal state B (the input point abnormal state w has been reset and the input point abnormal recovery state x has been set), an alarm is issued. The state s, the alarm confirmation state t, the alarm return state u, and the input point abnormality return state x are reset, the alarm reset state v is set, the alarm display section S4 is activated, and the processing is completed.

(5) The alarm generation state s and the alarm recovery state u
Also, when the input point abnormal recovery state x is also reset and when the corresponding alarm item F is not found, the processing is completed without performing any processing.

As described above, the alarm item processing unit S7
Depending on the alarm state before the operation is added, the plant operator's alarm confirmation operation for the alarm item displayed on the alarm screen is an alarm confirmation, an alarm reset request, or an alarm return state. However, it is determined whether the alarm confirmation request is to be issued later, it is reflected in the alarm data E of the alarm state storage unit S3, and is displayed on the alarm screen by the alarm display unit S4 in the same manner as when the alarm is issued.

As described above, in the device of the present invention, in addition to the processing of the conventional plant alarm device, by displaying the alarm of the input point abnormal state, whether the plant alarm is generated when the plant alarm is generated or the input point is abnormal. Since it is possible to easily determine whether the cause is due to, it becomes easy to identify the factor when the alarm is issued. Further, since the occurrence of the input power point abnormality can be easily determined, the abnormal input point can be quickly restored.

In the above embodiment, the state transition shown in FIG. 4 has been described as an example. However, the present invention is not limited to this, and as shown in FIG. It is also possible to provide a more detailed plant alarm state by adding the state BK and the input point abnormality return state BR.

[0049]

As described above, according to the present invention,
In addition to the conventional alarm display, it is also possible to display an alarm when a plant input error occurs, making it easy to determine the alarm factor (alarm occurrence, input point error) when an alarm occurs, and to clearly recognize the status of each alarm item. This makes it possible to respond more accurately and promptly in the event of a plant input error.
Therefore, the reliability of the alarm display information is improved, and the plant operation and the plant operation rate can be improved with higher reliability.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of an embodiment of a plant alarm device according to the present invention.

FIG. 2 is an explanatory diagram of an example of an alarm screen displayed on the display device of FIG.

FIG. 3 is an explanatory diagram showing a data set of each alarm item in FIG. 1 and its information content.

FIG. 4 is a state transition diagram of an alarm state according to the present invention.

FIG. 5 is a state transition diagram of another example of the alarm state according to the present invention.

FIG. 6 is a block configuration diagram of a conventional plant alarm device.

FIG. 7 is a state transition diagram of an alarm state in the conventional device.

[Explanation of symbols]

 Cp ... plant alarm device Ps ... plant signal group D ... display device T ... operator input device

Claims (1)

[Claims] 1. A signal from each part of the plant is inputted to judge an alarm state, and an alarm is displayed on the display device to indicate the state of occurrence of each alarm item, and the operator receives a confirmation operation for each alarm item, In a plant alarm device that changes the state to a state after alarm confirmation and reflects it in the alarm display, an abnormal state determination means for determining an abnormal signal state from each part of the plant, and an abnormal state determination by this abnormal state determination means A means for determining an alarm state different from the alarm state for the determined signal and means for displaying an abnormal state of the signal from the determined alarm state on the display device,
A plant alarm device, which is capable of displaying an alarm display when a plant signal is abnormal, in addition to an alarm display when the plant signal is normal.