JP2002091562A - Monitoring and control system - Google Patents

Abstract

(57) [Summary] [Problem] To improve work efficiency in abnormality analysis. An operating state obtaining unit for obtaining operating state data of a plant including a plurality of devices, and an operating state data storage for storing the operating state data obtained by the operating state obtaining unit in a time-series manner. When an abnormality occurs in any of the units 3 and a plurality of devices provided in the plant 20, the operation state data related to the abnormality is obtained from the operation state data stored in the operation state data storage unit 3. An operation state data selection section 9 for searching data and a time chart display section 10 for displaying the operation state data searched by the operation state data selection section 9 in time series are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monitoring and control system, and more particularly, to operating, stopping, and stopping plant equipment and the like.
The present invention relates to a monitoring and control system that displays process states such as abnormalities, operating state data during plant operation, and the like on a screen.

[0002]

2. Description of the Related Art Conventionally, in this type of monitoring and control system,
When an abnormality occurs in the plant equipment, recovers from the abnormality, or changes the operation state of the equipment, the state or data is saved as a history information in a file, or the saved history information is saved. Are listed in chronological order.

[0003] The status of plant equipment and the like is grasped by referring to the history information displayed in the list.

[0004]

However, such a conventional monitoring and control system has the following problems.

[0005] That is, if any abnormality occurs in the plant, the abnormality and operation of a plurality of devices are usually related to each other. Therefore, in the analysis of such a plant abnormality, the state of the signal related to the abnormality is examined with reference to the history information described above.

However, as described above, since the history information is displayed only in chronological order, the causal relationship is very difficult to understand, and the operator selects the abnormal information from the history information displayed in chronological order. There is a problem in that information considered to be related must be extracted one by one, and a great deal of time is spent on abnormality analysis.

The present invention has been made in view of such circumstances, and when an abnormality occurs in a plant or the like, information having a causal relationship to the abnormality is searched from history information, and further, the search is performed. It is an object of the present invention to provide a monitoring and control system capable of improving work efficiency in abnormality analysis by displaying the obtained information in a time chart.

[0008]

Means for Solving the Problems In order to achieve the above object, the present invention takes the following measures.

That is, according to the first aspect of the present invention, operating state acquisition means for acquiring operation state data of a plant including a plurality of devices, and operation state data acquired by the operation state acquisition means are stored in time series. When an abnormality occurs in any one of the plurality of devices provided in the plant, the operation state storage unit performing the operation state related to the abnormality based on the operation state data stored in the operation state storage unit. An operating state search unit for searching data and a display unit for displaying the operating state data searched by the operating state search unit in chronological order are provided.

Therefore, in the monitoring control system according to the first aspect of the present invention, by taking the above measures,
When an abnormality occurs in the plant, it is possible to search the operation state data related to the abnormality from the operation state data stored in time series, and display only the searched operation state data in time series. it can. By referring to the display result, it is possible to efficiently perform the abnormality analysis.

According to the second aspect of the present invention, there is provided an operation state acquisition unit for acquiring operation state data of a plant including a plurality of devices, and an operation for storing the operation state data acquired by the operation state acquisition unit in a time-series manner. When an abnormality occurs in any of the state storage unit and the plurality of devices provided in the plant, from the operation state data stored in the operation state storage unit, the operation state data related to the abnormality is stored. Input receiving means for receiving selection information input for selection; and operating state data based on the selection information input input to the input receiving means, extracted from the operating state data stored in the operating state storage means, and the extracted operating state Display means for displaying data in chronological order.

Therefore, in the monitoring control system according to the second aspect of the present invention, by taking the above means,
When an abnormality occurs in the plant, the operation state data considered to be related to the abnormality is selected from the operation state data stored in time series, and the selected operation state data is displayed in time series. be able to. By referring to the display result, it is possible to efficiently perform the abnormality analysis.

[0013]

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

(First Embodiment) A first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a functional block diagram showing an example of the monitoring control system according to the first embodiment.

That is, the monitoring and control system 1 according to the first embodiment includes an operation state data acquisition unit 2, an operation state data storage unit 3, a selection data display unit 4, and a history display unit 5. I have.

The operating state data acquiring section 2 is means for acquiring operating state data from a plant 20 provided with a plurality of devices, and further includes an engineering value processing section 7 and an event processing section 8. I have. The operation state data is an operation state (operation or stop) of each target device, process data, and the like. For example, in the case of a pump, the process data corresponds to a flow rate, a water level, a discharge pressure, and the like.

The engineering value processing unit 7 acquires operating state data sent as an electric signal from the plant 20 and converts the acquired operating state data from a current value to an engineering value (for example, “Pa” for pressure). This engineering value is converted into an analog signal or a digital signal and output to the event processing unit 8.

The event processing section 8 stores the engineering value output from the engineering value processing section 7 in the operating state data storage section 3. If the engineering value is an analog signal and the analog value exceeds a certain threshold value, it is determined that some abnormality has occurred in the plant 20, and the engineering value is stored together with the abnormality flag in the operating state data storage unit. Save to 3. On the other hand, when the engineering value output from the engineering value processing unit 7 is a digital signal and the state changes, it is determined that some abnormality has occurred in the plant 20 and the engineering flag is determined together with the abnormality flag. The value is stored in the operation state data storage unit 3.

The operation state data storage section 3 stores the operation state data output from the event processing section 8 in a time-series manner.

When an abnormality occurs in the plant 20, the selection data display section 4 selects an operation state data related to the abnormality from the operation state data stored in the operation state data storage section 3. A state data selector 9;
A time chart display unit 10 for displaying the selected operating state data in a time chart. The operation state data selection unit 9 can select from the operation state data list displayed on the history display unit 5 as described later, or search conditions (target device, target Process data, etc.), and operating state data matching the search condition can be selected by searching.

FIG. 2 is a schematic diagram showing an example of a time chart displayed by the time chart display section 10. In the case where a plant abnormality in which the pressure of the valve A becomes abnormally high occurs, the operation state data selection section 9 is executed. This is an example in which the pressure of a valve A (not shown) and the flow rate of a pump B (not shown) related to the valve A are selected from, and both operation state data are displayed in a time chart.

The history display unit 5 includes an operation state data storage unit 3
A time-series data search unit 12 that searches the operation state data stored in the time-series according to a time series, and a history display processing unit 13 that displays the operation state data searched by the time-series data search unit 12 in a time series. Have.

FIG. 3 is a schematic diagram showing an example of the operation state data displayed by the history display processing unit 13 in time series. As shown in FIG. 3, all the operation state data acquired by the operation state data acquisition unit 2 are displayed in the order of acquisition, regardless of the date, time, target device, process type, and the like. is there.

Next, the operation of the monitoring control system according to the present embodiment configured as described above will be described with reference to the flowchart shown in FIG.

When the operating state data obtaining unit 2 obtains an electric signal as operating state data of the plant 20,
The operating state data is converted into an engineering value by the engineering value processing unit 7 (S1).

The operating state data converted into the engineering value is output to the event processing unit 8 as an analog signal or a digital signal, and further, the operation state data storing unit 3
, Where they are stored in chronological order. If the engineering value is an analog signal and the analog value exceeds a certain threshold value, it is determined that some abnormality has occurred in the plant 20, and the engineering value is stored in the operating state data storage unit together with the abnormality flag. 3 On the other hand, if the engineering value output from the engineering value processing unit 7 is a digital signal, and if the state changes, it is determined that some abnormality has occurred in the plant 20 and the engineering flag is determined together with the abnormality flag. The value is stored in the operation state data storage 3 (S2).

When an abnormality occurs in the plant 20,
From the operation state data selection unit 9, operation state data related to the abnormality is selected. The selection of this operation state data
As shown in FIG. 3, a corresponding one is selected from the operation state data list displayed on the history display unit 5, or
This is performed by inputting search conditions (target device, target process data, etc.) via input means (not shown), and selecting one that matches the search conditions (S3).

The operating state data thus selected is displayed from the time chart display section 10 as shown in FIG. 2 (S4).

As described above, in the monitoring and control system according to the present embodiment, when any abnormality occurs in the plant 20 due to the above-described operation, the operation state data stored in chronological order is obtained. By selecting an operation state related to the abnormality from among them, only the selected operation state data can be displayed in chronological order. By referring to the display result, it is possible to efficiently perform the abnormality analysis.

For example, as shown in FIG.
From the data screen in which all the operating state data of 0 are mechanically displayed according to the acquisition time, even if any abnormality occurs in the plant 20, normal data which is not affected by the abnormality is also included. Therefore, it is difficult to perform abnormality analysis from the operation state data.

However, as shown in FIG. 2, by displaying only the operation state data related to the abnormality, it becomes easy to grasp the abnormal event, and it is possible to efficiently analyze the abnormality. Become.

For example, as shown in FIG.
Pressure change of the valve A,
This is an example in which a change in the flow rate of a pump B provided upstream of the valve A is displayed. Since the pressure of the valve A has started to increase after the flow rate of the pump B has increased, the pump B
It can be estimated that the pressure of the valve A has increased with the occurrence of the abnormality.

(Second Embodiment) Next, a second embodiment of the present invention will be described.
The embodiment will be described with reference to FIGS.

FIG. 5 is a functional block diagram showing an example of the monitoring control system according to the second embodiment. The same parts as those in FIG. 1 are denoted by the same reference numerals, and their description is omitted. Only the parts will be described, and redundant description will be avoided.

That is, the monitoring control system 14 according to the second embodiment shown in FIG. 5 is different from the monitoring control system 1 according to the first embodiment shown in FIG.
, Period data storage unit 16, period trend display unit 17
Are added.

The data conversion section 15 acquires the operation state data displayed in the time chart by the time chart display section 10, further extracts the operation state data for each predetermined cycle from the data, and stores it in the cycle data storage section 16. .

The cycle trend display section 17 graphically displays the operating state data stored in the cycle data storage section 16. Since the operation state data stored in the period data storage unit 16 is data for each predetermined period, the trend of the operation state data as shown in FIG. 6 is grasped by referring to the graph displayed here. It is possible to do.

The trend shown in FIG. 6 is obtained by creating an integrated water treatment amount (m ³ ) per day in a water treatment plant from data acquired every three hours. In this water treatment plant, 100 m ³ of water is treated per day, and data (a) on month a and month b shown in FIG.
Indicates that the plant 20 has no abnormality and is rated at 100 m ^3.
5 is a trend of the integrated water treatment amount when water is treated. On the other hand, the data (△) of c month d shown in FIG.
On the day when there is some abnormality in the plant 20, 12
This is a trend indicating that the processing speed has been reduced since the passing of time.

Next, the operation of the monitoring control system 14 according to the present embodiment configured as described above will be described with reference to the flowchart shown in FIG.

In the operation of the supervisory control system 14 according to the present embodiment shown in FIG.
Operations up to 4 are the same as the operations of the monitoring control system 1 according to the first embodiment shown in FIG.

In step S5, the data converter 15 obtains the operating state data displayed in the time chart by the time chart display section 10, and further extracts the operating state data at a predetermined cycle (for example, every three hours). And stored in the cycle data storage unit 16. And
The operation state data stored in the cycle data storage unit 16 is acquired by the cycle trend display unit 17 and is displayed in a graph.

FIG. 6 shows an example of this, in which the integrated water treatment amount per day (m ³ ) in the water treatment plant is shown.
Is a trend showing every three hours. By comparing the trend on month a (b) with no abnormality in the plant with the trend on month d (c) with some abnormality in the plant 20, it is possible to clearly recognize the difference. it can.

As described above, in the monitoring and control system according to the present embodiment, the following operation and effect can be obtained in addition to the operation and effect obtained in the first embodiment.

That is, in the monitoring and control system according to the present embodiment, the operating state data for each predetermined cycle is further extracted from the operating state data displayed in the time chart on the time chart display section 10, and A trend graph can be created based on the trend graph.

The trend graph created in this way is
By comparing and referring to the case where there is no plant abnormality and the case where there is a plant abnormality, it is possible to obtain further information regarding the plant abnormality.

Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to such configurations. Within the scope of the invented technical concept described in the claims, those skilled in the art will be able to conceive various modified examples and modified examples, and these modified examples and modified examples are also within the technical scope of the present invention. It is understood that it belongs to.

[0048]

As described above, according to the present invention,
When an abnormality occurs in a plant or the like, information having a causal relationship to the abnormality can be searched from the history information, and the searched information can be displayed in a time chart.

As described above, it is possible to realize a monitoring and control system capable of improving the work efficiency in analyzing an abnormality of a plant or the like.

[Brief description of the drawings]

FIG. 1 is a functional block diagram illustrating an example of a monitoring control system according to a first embodiment.

FIG. 2 is a schematic diagram showing an example of a time chart.

FIG. 3 is a schematic diagram showing an example of operating state data displayed in time series.

FIG. 4 is a flowchart showing the operation of the monitoring control system according to the first embodiment;

FIG. 5 is a functional block diagram illustrating an example of a monitoring control system according to a second embodiment;

FIG. 6 is a schematic diagram showing an example of operating condition data displayed as a trend;

FIG. 7 is a flowchart showing the operation of the monitoring control system according to the second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Monitoring control system 2 ... Operation state data acquisition part 3 ... Operation state data storage part 4 ... Selected data display part 5 ... History display part 7 ... Engineering value processing part 8 ... Event processing part 9 ... Operation state data selection part 10 ... Time chart display unit 12 Time-series data search unit 13 History display processing unit 14 Monitoring control system 15 Data conversion unit 16 Periodic data storage unit 17 Periodic trend display unit 20 Plant

Claims (2)

[Claims] 1. An operating state obtaining unit for obtaining operating state data of a plant including a plurality of devices, and an operating state storing unit for storing the operating state data obtained by the operating state obtaining unit in a time-series manner. When an abnormality occurs in any of the plurality of devices provided in the plant, the operation state data stored in the operation state storage unit is searched for operation state data related to the abnormality. A monitoring control system comprising: an operating state search unit; and a display unit that displays the operating state data searched by the operating state search unit in a time-series manner. 2. Operation state acquisition means for acquiring operation state data of a plant including a plurality of devices, and operation state storage means for storing the operation state data acquired by the operation state acquisition means in time series. If an abnormality occurs in any of the plurality of devices provided in the plant, the operation state data related to the abnormality is selected from the operation state data stored in the operation state storage unit. Input receiving means for receiving input of selection information, and operating state data based on the selection information input input to the input receiving means, from operating state data stored in the operating state storing means, A monitoring control system comprising: display means for displaying status data in a time-series manner.