JPH07272183A - Operation supporting device - Google Patents

Abstract

PURPOSE:To provide an operation supporting device whereby proper motion operating guidance is reported to an operator even when plural alarms are simultaneously issued. CONSTITUTION:An alarm priority order judgement processing means 6 judging which one of the plural pieces of alarm issue information simultaneously inputted is preferentially processed, a cause diagnosis inference processing means 2 estimating the abnormal cause of plural pieces of alarm issue information by order which is judged by the alarm priority order judgement processing means 6 and an operation supporting guidance output processing means 3 indicating a motion operation for resetting the alarm in accordance with the abnormal cause estimated by the cause diagnosis inference processing means 2 to the operator are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving support device for instructing a driving operation for resetting an alarm based on alarm generation information for notifying an abnormal state of a plant such as a thermal power plant or a nuclear power plant.

[0002]

2. Description of the Related Art Generally, a plant operation device such as a thermal power plant or a nuclear power plant is provided with a driving support device for supporting the driving operation of an operator. This operation support device guides an operation operation that an operator should take in response to an alarm generated during plant operation.

FIG. 6 shows a block diagram of a conventional driving support device. Now, if a plant abnormal state caused by something occurs during plant operation, an abnormal value of the process amount is detected and input as alarm generation information 1 to the cause diagnosis inference processing means 2 of the driving support device 5. In the cause diagnosis and inference processing means 2, the plant operating state, that is, which of the plant operating states such as boiler ignition, turbine ventilation, generator inclusion, normal operation, etc., values of various process amounts, various contact information, etc. The reason for the abnormality is inferred based on various process signals.

The cause estimated here is input to the driving support guidance output processing 3, and the cause diagnosis and inference processing 2 is performed from the plant operating state and various information to estimate the cause, and the driving support guidance output processing 3 Then, a message corresponding to the cause is displayed on the output device 4 such as a CRT display device. As a result, the operator can know the driving operation to be taken for the abnormality.

As described above, in the conventional driving support device, when an alarm is generated in the power plant, the cause of the alarm is inferred, the operator is informed of the operation guidance to be taken, and the cause is removed. It was a prompt to the operator.

[0006]

However, in such a conventional driving support device, one alarm generation information is
In order to infer the cause, it is inferred based on the plant operating state, the values of various process quantities, various contact information, and other various process signals. Takes.

Particularly, when a plurality of alarms are simultaneously issued, the alarms generated later have to be further processed, so that the driving operation for the alarms is delayed. Generally, when an alarm is issued, it is necessary to reset the alarm to bring the plant into a stable state, or to perform a process such as a safe stop. When the individual alarms are generated at the same time, the guidance is delayed as to which alarm the driving operation should be prioritized.

At present, it is left to the judgment of the operator, and it is expected that the initial response operation may be delayed. In such a case, equipment damage or deterioration of the plant condition may progress, resulting in an emergency stop of the plant.

An object of the present invention is to provide an appropriate motion operation guidance for resetting an alarm to an operator even when a plurality of alarms are simultaneously generated or continuously generated, and an operation for plant safety stop. It is to provide a driving support device capable of giving guidance.

[0010]

DISCLOSURE OF THE INVENTION A driving support device of the present invention is an alarm priority determination processing means for determining which of the alarm priority information is to be processed preferentially when a plurality of alarm generation information are simultaneously input, and this alarm. Cause diagnosis inference processing means for estimating the cause of abnormality of a plurality of alarm occurrence information in the order of priority determined by the priority determination processing means, and resetting the alarm corresponding to the abnormality cause estimated by this cause diagnosis inference processing means Driving assistance guidance output processing means for instructing a driver to perform a driving operation for the driving assistance device.

According to the second aspect of the invention, the alarm priority determination processing means determines the priority determination based on a predetermined priority determination pattern for each plant operating state.

Further, according to the invention of claim 3, the alarm priority determination processing means determines the priority determination based on the change trend of the process amount in the abnormal state. The driving support device according to claim 1, wherein

According to another aspect of the present invention, the alarm priority determination processing means weights the membership function generating means for obtaining the depth of the alarm degree of the process amount in the abnormal state and the alarm of the process amount in the abnormal state. It is provided with an alarm importance level generating means to be generated and an AI inference means for judging the alarm priority order based on the depth of the alarm degree and the weighting of the alarm.

According to another aspect of the present invention, the alarm priority determination processing means includes the first priority determination processing means defined based on a predetermined priority determination pattern for each plant operating state, and the process amount in the abnormal state. Second priority determination processing means defined based on the change trend, and third alarm priority determination based on the depth of the alarm degree of the process amount in the abnormal state and the weighting of the alarm of the process amount in the abnormal state
And the alarm priority order determination AI inference means for performing the alarm priority order determination based on the respective output signals of the first, second and third order determination processing means.

[0015]

According to the present invention, before carrying out the cause judgment and inference processing, it is first judged which of the contents of a plurality of alarms should be processed, and when a plurality of plant abnormalities occur, priority judgment processing is executed. By inferring the cause from the highest priority, the operator is provided with appropriate driving guidance without time delay.

This enables safe operation of the plant by early resetting of the alarm and safe stop without damaging the equipment. In other words, the alarm generation information is input, and the guidance of the safety reset operation or the safety stop operation that does not cause equipment damage even if a plurality of alarms are generated is output without delay.

[0017]

EXAMPLES Examples of the present invention will be described below. FIG. 1 is a block diagram showing an embodiment of a driving support device of the present invention.

The alarm generation information 1 from the plant is input to the alarm priority determination processing means 6 of the driving support device 5 of the present invention. The alarm priority determination processing means 6 determines which of the alarm generation information is to be preferentially processed when a plurality of alarm generation information are input at the same time. If the alarm is left unattended, the plant will be stopped. Special alarms and alarms that damage plant components are high-priority alarms. The alarm priority determination processing means 6 preferentially selects and prioritizes such alarms having high priorities.

The alarm occurrence information ranked by the alarm priority determination processing means 6 is input to the cause diagnosis inference processing means 2 in that order and the cause of abnormality is estimated.

The driving support guidance output processing means 3 outputs driving operation guidance for resetting an alarm corresponding to the cause of abnormality estimated by the cause diagnosis and inference processing means 2 to an output device 4 such as a CRT display device. It is displayed on the screen and instruct the operator.

That is, when the alarm generation information 1 is input to the operation support device 5 due to a plant abnormality, the alarm priority determination processing means 6 determines the content of the generated alarm. Then, even if there are a plurality of alarms that are generated simultaneously or one after another, the one with the highest priority is sent to the cause diagnosis and inference processing means 2, and the cause is estimated there. When the cause is estimated, the driving support guidance output processing means 3 outputs an operation message corresponding to the cause to the output device 4.

As described above, according to the present invention, the alarm generation information is input and the guidance of the safety reset operation or the safety stop operation that does not damage the equipment even if a plurality of alarms are generated is output without delay. There is. In addition, early resetting of the alarm enables safe operation of the plant and safe stop without damaging the equipment.

Next, FIG. 2 is a block diagram showing a first embodiment of the alarm priority order determination processing means 6. When a plurality of alarm occurrence information 1 is generated, here, A, B, and C are 3
The figure shows the case in which pieces are generated.

The alarm priority order determination processing means 6 determines the priority order based on the order determination pattern 11 which is input as the plant information 7 and is predetermined for each plant operating state.

The plant information 7, that is, the plant operating state is input, and the priority order is determined by the order determination pattern 11 from the current plant operating state and the alarm generation information 1.
This is because the importance of the alarm changes depending on the plant operating state, so that the alarm priority changes depending on the plant operating state based on the ranking determination pattern 11. The alarm priority signals 8 ranked by this rank determination pattern 11 are sent to the cause diagnosis inference processing means 2 by the priority output processing means 9 as the selected warning signal 10 in descending order of priority.

In the case of the first embodiment, attention is paid to the fact that the same alarms have different importances depending on the plant operating conditions, so that they can be applied to all operating conditions of the plant. .

FIG. 3 shows a second embodiment of the alarm priority determination processing means 6. The alarm priority order determination processing means 6 in the second embodiment determines the priority order based on the change trend of the process amount in the abnormal state.

The alarm generation signal 1 is first input to the first alarm state comparison means 12. The first alarm state comparison means 12 determines the direction of the process amount in the abnormal state. That is, after the alarm is issued, it is determined whether the alarm condition is worse or better. This determination is made based on the rate of change of the process amount in the abnormal state.

If it is in the worsening direction, the second alarm state comparing means 13 compares the magnitude of the alarm change rate with a predetermined value. The one with the largest rate of change is in the worst direction, so the priority is the highest.

On the other hand, if the direction is not worse, the third
The alarm state comparison means 14 determines whether the direction is improving. In the case of the direction of improvement, since the alarm is in the resetting direction, the operator does not need to operate for the alarm, so the priority becomes low. In addition, there is neither a better direction nor a worse direction, that is, in the case of maintaining the current state, the order is later than the case of a bad direction.

As a result, these alarm state comparison means 1
The outputs of 2, 13, and 14 are sent to the priority generation means 15, and the one having the highest priority is sent to the cause diagnosis inference processing means 2 as the selection alarm signal 10.

In the second embodiment, the importance of the alarm is judged on the basis of the change trend of the process quantity in the abnormal state. Therefore, even if the alarm area is dangerous, the direction is good. If the transition has occurred, the order of reasoning for that cause will be low. On the other hand, if the alarm area is moving in a bad direction even if it is not so dangerous, the order of cause inference is high. Therefore, it becomes possible for the operator of the plant to select and notify appropriate operation guidance.

FIG. 4 is a block diagram showing a third embodiment of the alarm priority determination processing means 6. In the case of the third embodiment, the alarm priority determination processing unit 6 determines the alarm priority based on the depth of the alarm degree of the process amount in the abnormal state and the weighting of the alarm of the process amount in the abnormal state. Is to do.

The alarm priority determination processing means 6 is a membership function generating means 16 for determining the depth of the alarm degree of the process amount in the abnormal state, and an alarm importance degree for generating the weighting of the alarm of the process amount in the abnormal state. Generating means 17,
The AI inference means 18 performs the alarm priority determination based on the alarm depth and the alarm weight.

Here, the alarm generation information 1 is sent to the alarm importance degree generating means 17, and each alarm is given a weighting of the alarm, that is, a score of the importance. This alarm weight is sent to the AI inference means 18 as an alarm importance signal.

On the other hand, the alarm generation information 1 is also input to the membership function generating means 16. The membership function generating means 16 has a numerical value that increases as the current alarm influences equipment damage or plant shutdown.
It outputs a function of ~ 1,0. The output of the membership function generating means 16 is also sent to the AI inference means 18. The AI inference means 18 makes an AI inference based on the alarm importance signal and the output signal of the membership function generating means 16, decides the priority of which cause diagnosis inference is to be performed, and issues a selection alarm to the cause diagnosis inference processing means 2. Send signal 10.

The reasoning by the AI reasoning means 18 is, for example, as follows.
A value obtained by multiplying the alarm importance signal and the output signal of the membership function generating means 16 is used, or both are bad, and one is bad, and the one with the largest value has the highest priority. Then, etc. are possible.

In the case of the third embodiment, the alarm priority determination processing means 6 issues an alarm based on the depth of the alarm degree of the process amount in the abnormal state and the weighting of the alarm of the process amount in the abnormal state. Since priority determination is performed, it becomes possible for the operator of the plant to select and notify appropriate operation guidance.

FIG. 5 is a block diagram showing a fourth embodiment of the alarm priority determination processing means 6. In the alarm priority order determination processing means 6 in the fourth embodiment, the first priority order determination processing means 19 has the function of the alarm priority order determination processing means 6 in the first embodiment, and the second priority order determination processing. The means 20 is provided with the function of the warning priority order determination processing means 6 in the second embodiment, and the third order determination processing means 21 is provided with the third function.
In this embodiment, the function of the alarm priority order determination processing means 6 is added. Then, the alarm priority determination AI inference means 22 determines the alarm priority based on the output signals of the first, second and third priority determination processing means 19, 20, 21. .

That is, the alarm priority determination processing means 6 is the first priority determination processing means 19 which is determined based on a predetermined priority determination pattern for each plant operating state.
And a second order determination processing means 20 that is determined based on the change trend of the process amount in the abnormal state, and the depth of the alarm degree of the process amount in the abnormal state and the weighting of the alarm of the process amount in the abnormal state. The third priority determination processing means 21 for determining the priority of the alarm and the alarm priority determination AI for determining the priority of the alarm based on the respective output signals of the first, second and third priority determination processing means. And an inference means 22.

The alarm generation information 1 is first input to the first rank determination processing means 19 and the importance for each plant operating state is determined. Next, the second priority determination means 20 determines the alarm depth from the membership function generation means 16 and the priority of the alarm from the importance of the alarm item itself. In addition, the third order determination processing means 21 determines the alarm priority order in the direction in which the alarm becomes worse and the direction in which the alarm becomes better. Then, the respective alarm priority levels obtained are input to the alarm priority level AI inference means 22 to determine the final alarm priority levels. Inference in this case may be made by, for example, determining the degree of relationship between the current plant operating state and its alarm, and multiplying by each alarm priority. Then, the result of the inference is sent to the cause diagnosis inference processing means 2 as the selection alarm signal 10.

In the fourth embodiment, the function determined based on a predetermined rank determination pattern for each plant operating state, the function determined based on the change trend of the process amount in the abnormal state, the process amount in the abnormal state It has a function to determine the alarm priority based on the depth of the alarm degree and the weighting of the alarm of the process amount in the abnormal state. The priority determined by these functions is further comprehensively integrated into the alarm priority AI. Since the inference means 22 makes the determination, it becomes possible to select and notify more appropriate operation guidance.

[0043]

As described above, according to the driving support system of the present invention, even when a plurality of alarms are generated, the cause diagnosis and inference processing is executed from the most important alarm in the current plant state. You can Therefore, an operation message corresponding to the cause can be appropriately provided to the operator.

Further, since the most important alarm can be processed, the damage to the equipment and the adverse effect on the plant due to the delay in the operation response by the operator can be suppressed to the minimum, and the stable operation of the plant can be ensured. .

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a block diagram showing a first embodiment of an alarm priority determination processing means of the present invention.

FIG. 3 is a block diagram showing a second embodiment of an alarm priority determination processing means of the present invention.

FIG. 4 is a block diagram showing a third embodiment of an alarm priority determination processing means of the present invention.

FIG. 5 is a block diagram showing a fourth embodiment of the alarm priority order determination processing means of the present invention.

FIG. 6 is a block diagram of a conventional example.

[Explanation of symbols]

 1 alarm generation information 2 cause diagnosis inference processing means 3 driving support guidance output processing means 4 output device 5 driving support device 6 alarm priority determination processing means 7 plant information 8 alarm priority signal 9 priority output processing means 10 selection alarm means 11 Rank determination pattern 12 First alarm state comparison means 13 Second alarm state comparison means 14 Third alarm state comparison means 15 Priority generation means 16 Membership function generation means 17 Alarm importance generation means 18 AI inference means 19th 1st rank determination processing means 20 2nd rank determination processing means 21 3rd rank determination processing means 22 Alarm priority AI inference means

Claims (5)

[Claims] 1. A driving support device for instructing an operator to perform a driving operation for resetting an alarm based on the alarm generation information notifying an abnormal state of a plant, when a plurality of the alarm generation information are simultaneously input. Alarm priority order determination processing means for determining which is given priority, and cause diagnosis inference processing means for estimating the cause of abnormality of the plurality of alarm occurrence information in the order of priority determined by the alarm priority order determination processing means. And a driving assistance guidance output processing means for instructing a driver to perform a driving operation for resetting the alarm corresponding to the cause of the abnormality estimated by the cause diagnosis and inference processing means. Driving support device. 2. The alarm priority order determination processing means determines the priority order based on a predetermined order determination pattern for each plant operating state. Driving support device. 3. The alarm priority order determination processing means determines the priority order based on a change trend of a process amount in an abnormal state.
The driving support device described in. 4. The alarm priority determination processing means is a membership function generating means for obtaining a depth of an alarm degree of a process amount in an abnormal state, and an alarm for generating weighting of the alarm of the process amount in the abnormal state. Means of generating importance,
The driving assistance apparatus according to claim 1, further comprising an AI inference unit that determines an alarm priority order based on the depth of the alarm degree and the weighting of the alarm. 5. The alarm priority order determination processing means is based on a first order determination processing means defined based on a predetermined order determination pattern for each plant operating state, and a change trend of a process amount in an abnormal state. Second order determination processing means defined by the above, and a third order determination for performing the alarm priority order determination based on the depth of the alarm degree of the process amount in the abnormal state and the weighting of the alarm of the process amount in the abnormal state. A processing means and an alarm priority order determination AI inference means for making an alarm priority order determination based on respective output signals of the first, second and third order determination processing means. Item 1. The driving support device according to item 1.