JPH05281003A - Plant operation support device - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] Before the plant data becomes an alarm point, the operator is instructed on the operating method and safety operating method for inferring the cause of the abnormal tendency of the plant and resetting the abnormal tendency. To provide a plant operation support device for informing the user. [Structure] During plant operation, data collection means for automatically collecting operating plant data under the same load for a certain period of time required for the plant state to stabilize under an arbitrary load, and the plant data and plant reference data for the load are provided. A comparison processing unit for comparing and determining an abnormal tendency, a cause diagnosis inference unit for inferring a cause of an item determined to be an abnormal tendency, and a driving assistance guidance output unit for outputting an operation guidance of an operation message corresponding to the abnormality cause .. The plant operator compares the plant data when a certain time has passed with a certain load with the plant reference data at that load, and if the difference exceeds the tolerance, infers what the cause is and outputs the optimal operation guidance. The operation corresponding to the operation guidance output is performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plant operation support device for supporting plant operators such as thermal power plants and nuclear power plants.

[0002]

2. Description of the Related Art The operation of a conventional plant operation support device will be described with reference to the flow chart of FIG. 3 showing the flow of the process of operation support by the plant operation support device. As shown in FIG. 3, the plant operation support device 16 includes a plant data processing unit 12 and a plant data alarm limit value file 1.
3. Comprised of comparison processing means 14 and alarm output means 15. In the plant operation support device 16, after collecting the plant data 11 at a constant cycle, the collected data is processed by the plant data processing means 12 and compared with the limit value from the plant data alarm limit value file 13 and the comparison means 14. Compared by When the comparison processing means 14 determines that the alarm value is reached, the alarm output means 15
Is displayed on the output device 17 to notify the operator of a plant abnormality.

[0003]

Normally, when an alarm occurs in a power plant, an operator investigates what the cause is and takes an action to eliminate the cause. in this case,
Since the message that the plant has become abnormal is not output until the plant data reaches the alarm point, the operator knows the alarm occurrence and investigates the cause and takes corrective action, so the plant response becomes worse during that time and the plant response becomes worse. There is a possibility of trip or equipment damage.

Further, even if the plant trip does not occur as described above, it is necessary to give top priority to processing such as bringing the plant into a stable state at an early stage or safely stopping it. In the equipment, if the plant data does not change up to the alarm point, it will not output an alarm and it will not be known what the cause is, so the response operation will be delayed, equipment damage and deterioration of the plant state will progress,
The present invention, which had a problem of having to stop the plant in an emergency, was made in view of the above circumstances, and its purpose is to infer the cause of an abnormal tendency of the plant before the plant data becomes an alarm point. An object of the present invention is to provide a plant operation support device that informs an operator of a driving operation method or a safe operation method for resetting an abnormal tendency.

[0005]

In order to achieve the above object, the plant operation support device of the present invention operates at the same load for a certain period of time required for the plant state to stabilize at any load during plant operation. A data collection means for automatically collecting plant data, a judgment processing means for comparing the plant data and plant reference data in the load and judging an abnormal tendency, and a cause diagnosis for inferring the cause of the item judged as the abnormal tendency The present invention is characterized by comprising an inference means and a driving assistance guidance output means for outputting an operation guidance for a corresponding operation message indicating the cause of the abnormality.

[0006]

According to the plant operation support apparatus of the present invention, the plant data when a certain time has passed for a certain arbitrary load is compared with the plant reference data under the load, and if the difference is equal to or more than the tolerance, what is the cause? Since the optimum operation guidance is output based on the above inference, the plant operator can perform stable operation of the plant and prevent accidents by performing an operation corresponding to the output of the operation guidance.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a flowchart showing the flow of a driving support process of a plant driving support system according to an embodiment of the present invention.

In FIG. 1, the plant data 1 is a determination processing means 2 for determining whether or not a certain period of time has passed under a certain arbitrary load in consideration of the time required for the plant to stabilize.
It is determined whether or not a fixed time has passed by, and if so, the plant data is collected 3 as a stable state of the plant. Further, the plant reference data at the arbitrary load is called from the plant reference data file 5, and the tolerance of the plant data at the load is called from the tolerance file 6 with the plant reference data.
Compared with the plant data 1 collected by. If the data comparison device 4 determines that the difference is equal to or more than the tolerance, the cause diagnosis and inference processing means 8 infers the cause, and the driving assistance guidance output means 9 outputs the driving assistance guidance to the output device 10.

Next, the operation of this embodiment will be described.
When it is determined by the determination processing means 2 that determines whether or not a certain time has passed under a certain arbitrary load, the plant data 1 as a stable state of the plant is determined.
To collect. Further, the plant reference data at the arbitrary load is called from the plant reference data file 5, the tolerance of the plant data at the load is called from the tolerance file 6 with the plant reference data, and the plant data collected by the data comparison device 4 is called. Compare with 1. If it is determined that the difference is equal to or more than the tolerance, the cause diagnosis and inference processing unit 8 infers the cause, and based on this inference, the driving support guidance output unit 9 outputs the driving support guidance to the output device 10.

An example of the comparison / determination means will be described with reference to the flowchart of FIG. When the deaerator internal pressure is collected as plant data 1 during operation of 300 MW power generation, an alarm is output when the internal pressure falls below 0.2 kg / cm ² g, but generally during load operation The internal pressure is several kg / cm ² g, and it is considered to be a serious abnormality that the pressure falls to the alarm point.

If the data collected as described above is 4.0 kg / cm ² g, the reference data for 300 MW power generation is called from the plant reference data file 5. The called data is 4.
If it is 5 kg / cm ² g, the difference is 0.5 kg / cm
It will be ² g. This 0.5 kg / cm ² g is compared with the data called from the tolerance file 6 with the plant reference data, and when 0.2 kg / cm ² g is set as the tolerance, the data comparison device 4 determines that the tolerance is not less than the tolerance. Judged,
The cause diagnosis reasoning processing means 8 deduces the cause of why the tolerance is exceeded, and the driving assistance guidance output means 9 outputs the cause and the operation guidance corresponding thereto to the output device 1.
Send it to 0 to let the operator know and take action.

As described above, according to this embodiment, the plant data when the load is stable is collected, the data is compared with the plant reference data, and the tolerance is compared and judged. It is possible to provide an operator with an appropriate cause and corresponding operation guidance at a time when there is an abnormal tendency (time before an alarm is issued) from the reference at the time. Therefore, it is possible to minimize the damage to the equipment and the influence on the plant due to the delay in the response caused by the operator investigating the cause and performing the corresponding operation after the alarm is issued as in the conventional case.

[0013]

As described above, according to the plant operation support apparatus of the present invention, the plant data when the load is stable is collected and the tolerance between this data and the plant reference data file and the plant reference data is collected. By comparing and determining the data from the file, it is possible to provide the operator with an appropriate cause and corresponding operation guidance at the time when there is an abnormal tendency (time before the alarm is issued) from the reference at that time. Therefore, it is possible to minimize the damage to the equipment and the influence on the plant due to the delay in response as in the conventional case, and to stably supply the power and prevent the accident.

[Brief description of drawings]

FIG. 1 is a flowchart of plant operation support by a plant operation support device of the present invention.

FIG. 2 is a flowchart showing an example of the determination process of FIG.

FIG. 3 is a flowchart of plant operation support by a conventional plant operation support device.

[Explanation of symbols]

1 ... Plant data, 2 ... Judgment processing means, 3 ... Plant data collection, 4 ... Data comparison device, 5 ... Plant reference data file, 6 ... Tolerance file with plant reference data, 7 ... Plant data check means, 8 ... Cause diagnosis inference means, 9 ... Driving support guidance output means, 10 ... Output device.

Claims (1)

[Claims] 1. A data collection means for automatically collecting operating plant data under the same load for a certain period of time required for the plant state to stabilize under an arbitrary load during plant operation, and the plant data and plant reference data for the load. And a determination processing means for determining an abnormal tendency, a cause diagnosis inference means for inferring a cause of an item determined to be an abnormal tendency, and a driving assistance guidance output means for outputting an operation guidance of a corresponding operation message for the abnormal cause. A plant operation support device comprising: