JP2000259224A - Plant monitoring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plant monitoring device which can accurately grasp a plant monitoring job during a maintenance/inspection job and accordingly can monitor the operation of a plant in an easier way. SOLUTION: This monitoring device reads various data which are observed at every monitoring point of a plant 10, decides the abnormality of the observed data and outputs the alarm information to various external output means 60 including an alarm window display device 61, etc. An inspection information input means 70 is added to the monitoring device to input the maintenance/ inspection information against those monitoring points together with an inspection deciding means 80 which decides whether or not the alarm information shows an alarm that is produced during a manitenance/inspection job according to the maintenance/inspection information inputted from the means 70. In such a constitution, the alarm produced during the maintenance/inspection job is discriminated from an alarm that is produced in a normal operation mode according to the deciding result of the means 80. These discriminated alarms can be outputted to the means 60.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a plant monitoring system. Specifically, power generation plants such as nuclear power generation and thermal power generation, various industrial plants for chemical and steel use,
The present invention relates to a plant monitoring system applicable to various types of plants, such as a distribution plant such as a substation, a nuclear fuel reprocessing plant, and other general manufacturing plants.

[0002]

2. Description of the Related Art FIG. 18 is a schematic block diagram of a conventional plant monitoring system. The plant monitoring system reads a variety of observation data at each monitoring point on the plant 10 installed on the site, and determines whether or not the observation data read by the read processing means 20 is abnormal. The alarm determining means 30 and the alarm information determined by the alarm determining means 30
Output determination means 40 for outputting a value to 0, and point information storage means 50 for temporarily storing an alarm limit value as a criterion at each monitoring point and observation data read by the read processing means 20. I have.

[0005] The reading processing means 20 includes observation data (hereinafter referred to as “analog information”) indicated by numerical values such as temperature, pressure, and flow rate measured at each part of the plant 10, and opening / closing of a valve. Observation data (hereinafter, referred to as "contact input information") represented by binary values such as operation / stop of the auxiliary machine is read, and each read observation data (hereinafter, both are referred to as "point information") is pointed. Output to the information storage means 50. Also, an alarm confirmation notification notifying that the observation data has been read is output to the alarm determination means 30.

[0004] Upon receiving the warning confirmation notice, the warning judgment means 30 accesses the point information storage means 50, and
The current value (read value) and the alarm limit value recorded in the point information storage means 50 are read, and the alarm state is determined. The alarm state is determined based on the alarm limit value, and a normal state notification or an alarm state notification (or state change notification) and a normal state return notification (hereinafter, referred to as “state information”) are output determination means according to the determination. Output to 40.
The notification method of these status information will be described in detail later. The normal status notification indicates that the read current value is normal, and the alarm status notification (or status change notification) indicates that an abnormality has occurred. Indicates that the abnormality that has occurred has returned to the normal state.

[0005] Upon receiving the state information, the output judging means 40 outputs each output information to the external output means 60 in accordance with the contents of the state information, and operates or stops the external output means 60. For example, if the status information is an alarm status notification, the alarm window output information is output to turn on the alarm window display device 61 provided on the monitoring panel, or the alarm sound output information is output to output the buzzer of the alarm sound device 62. Sounds. Further, it outputs display output information to display an alarm status message on a screen display device 63 such as a CRT display, or outputs printer output information to output an alarm message to a printer output device 64.

If the status report information is a normal status return notification, the alarm window display device 61 of the monitoring panel is turned off, the alarm status message on the screen display device 63 is deleted, and the printer output device 64 is returned to the normal status. Output message.
Further, when an alarm status notification (referred to as “status change notification”) for the contact input information occurs, a status change message is output to the printer output device 64.

Further, a monitoring method in the plant monitoring system will be described in detail with reference to FIGS. 19 and 20 are explanatory diagrams showing the structures of the point information stored in the point information storage means 50, respectively. FIG. 19 shows the case where the point information is analog information, and FIG. An example is shown. FIGS. 21 and 22 are flowcharts showing the alarm judgment processing in the alarm judgment means 30, respectively. FIG. 21 shows a case where the point information is analog information, and FIG. 22 shows a case where the point information is contact input information. It shows about. 23 to FIG.
6 is an explanatory diagram showing an example of each message output from the external output means 60, and FIG.
3 is an example of an alarm message displayed on the screen display device 63, FIG. 24 is an example of an alarm message output to the printer output device 64, and FIG. 26 is an example of an alarm message output to the printer output device 64. 9 is an example of a normal return message. FIG. 27 is an explanatory diagram showing an example of an alarm display on the alarm window display device 61, and FIG. 28 is an explanatory diagram showing a configuration of alarm window output information used for output to the alarm window display device 61.

[0008] The plant 10 is provided with an extremely large number of measuring devices and the like as necessary for each component device.
The read processing unit 20 outputs the observation data measured from each measuring device and the state quantity of each component device to the point information storage unit 50 as point information. As shown in FIG. 19, in the case of analog information, as shown in FIG. 19, monitoring data measured by a measuring device is used as analog information, and monitoring point 1, monitoring point 2, monitoring point (m−1), monitoring point The input point number, the input point name, the alarm upper limit value, the alarm lower limit value, the unit of observation data, the observation data unit, and the alarm on the alarm window display device 61 are shown for each of the monitor points for the maximum m monitor points. It shows the alarm window information used for the measurement, the current value (previous value) storing the observation data at the last measurement, the current value (read value) storing the observation data at the current measurement, and the current alarm state. It consists of an alarm status and a spare field. In the case of contact input information, as shown in FIG. 20, for example, monitoring points 1, monitoring points 2, and the following monitoring points (n-1) are used as contact input information indicating, for example, an on / off state indicating the state of a component device. The input point number, the input point name, the alarm limit value at the relevant monitor point, the unit indicating the state of the component device, the alarm window display device 61, and the alarm window display device 61 Window information used to indicate the current value, the current value (previous value) storing the observation data at the last measurement, the current value (read value) storing the observation data at the current measurement, and the current alarm status And a spare field.

Next, a processing procedure in the alarm processing means when the point information is analog information will be described with reference to FIG. First, when an alarm confirmation notification is sent from the read processing means 20, the alarm processing means starts alarm determination,
First, the current value (read value) a at the monitoring point 1 is read from the point information storage means 50 (S101). Next, an alarm limit value is read from the point information, and it is determined whether an alarm limit value has been set (S102). If it is set (Yes), the input value a is compared with the lower limit (S103). If the input value a is smaller than the lower limit, "1" is set to the temporary alarm state b as the lower limit deviation (S104). S1
If it is larger than the lower limit in 03, the input value a is compared with the upper limit (S105), and if it is larger than the upper limit, "2" is set to the provisional alarm state b as the upper limit deviation (S10).
6). If it is within the limit value range, "0" is set to the temporary alarm state b as a normal state (S107).

Thereafter, the alarm status c (previous value) of the alarm status in the point information is compared with the temporary alarm status b, and the judgment is made.
It is determined whether or not the alarm state has changed (S10).
8). At this time, when there is no change in the alarm state c (No)
Is set to "0" as no change in the state change notification e as the state information as there is no change in the state information (S10).
9) The alarm state c is output as it is to the output determining means 40 as the state information, and the current value (previous value) d is updated to the input value a (S115), and the alarm processing at the monitoring point is ended.

If there is a change in the status information in S108 (Yes), the content of the temporary alarm status b is determined (S110), and the alarm status c of the alarm status is changed according to the content of the temporary alarm status b. , B = 0, the alarm state c is updated to "0" as a normal state (S111), and if b = 1, the alarm state c is updated to "1" as a lower limit alarm is generated (S112), b If = 2, the alarm status c is updated to "2" as the occurrence of an upper limit alarm (S113). Further, "1" is set as the change in the state change notification e (S11).
4) The alarm status c is output as it is to the output determination means 40 as status information, and at the same time, the current value (previous value) d is updated to the input value a (S115), and the alarm process at the monitoring point is ended.

If the alarm limit value is not set in S102, the current value (previous value) d is updated to the input value a assuming that the monitoring point 1 is not determined (S11).
5), the determination on the monitoring point is completed. When the processing at one monitoring point is completed in this way, the processing shifts to the next monitoring point, the same processing is performed, and the processing is completed for all monitoring points.

Next, a processing procedure in the alarm processing means when the point information is contact input information will be described with reference to FIG. First, when an alarm confirmation notification is sent from the read processing means 20, the alarm processing means starts alarm determination,
The current value (read value) a at the monitoring point 1 is read from the point information storage means 50 (S201). Next, an alarm limit value is read from the point information, and it is determined whether an alarm limit value has been set (S202). If it is set (Yes), it is determined whether the alarm limit value is an “ON” alarm (S203). Here, if the alarm limit value is an “ON” alarm (that is, if it is determined that an alarm has occurred in the “ON” state) (Yes), the input value a is determined (S204), and the input value a is determined. Is "ON", it is determined that an ON alarm has occurred, and "1" is set in the temporary alarm state b (S
205). In S204, if the input value a is "OFF", it is determined that it is in a normal state, and "0" is set in the temporary alarm state b (S206).

If the alarm limit value is "OFF" alarm in S203 (that is, it is determined that an alarm has been generated in the "OFF" state) (No), the input value a is determined (S20).
7) If the input value a is “off”, it is determined that an off alarm has occurred, and “2” is set to the temporary alarm state b (S208). S
If the input value a is "ON" at 207, it is determined that the state is normal, and "0" is set to the temporary alarm state b (S20).
9).

Thereafter, the current alarm state c and the temporary alarm state b stored as the alarm status in the point information
Then, it is determined whether or not the alarm state has changed (S210). At this time, if there is no change in the alarm state (No), it is determined that there is no change in the state information, and “0” is set as the state change notification e as no change (S211), and the alarm state c remains unchanged. The current value (previous value) d is updated to the input value a as well as being output to the output determination means 40 as the state information (S220), and the alarm processing at the monitoring point is ended.

If there is a change in the alarm state in S210 (Yes), the contents of the temporary alarm state b are determined (S212), and the alarm status alarm state c is changed according to the contents of the temporary alarm state b. If b = 0, it is determined that the state has returned to the normal state, and "0" is updated to the alarm state c (S21).
3) If b = 1, an on-alarm is generated and the alarm state c is updated to "1" (S214). If b = 2, an off-alarm is generated and the alarm state c is updated to "2" (S21).
5). Further, "1" is set as the change in the state change notification e (S216), the alarm state c is output as it is to the output determination means 40 as the state information, and the current value (previous value) d is updated to the input value a. Then (S220), the alarm process at the monitoring point ends.

If the alarm limit value has not been set in S202, the normal state is set and "0" is set in the temporary alarm state b (S217). Then, is the alarm state changed? Check. That is, the input value a is compared with the current value (previous value) d (S218). If there is no change (No), the current value (previous value) d is changed to the input value a.
(S220), and the alarm processing at the monitoring point ends. If there is a change (Yes), it is determined that a state change has occurred, and “1” is set as the change in the state change notification e (S219),
The alarm state c is output as it is to the output determination means 40 as the state information, and the current value (previous value) d is updated to the input value a (S220), and the alarm processing at the monitoring point is ended. When the processing at one monitoring point is completed in this way, the processing shifts to the next monitoring point, the same processing is performed, and the processing is completed for all monitoring points.

The alarm processing means determines whether or not the observation data read in this way is abnormal. If the observation data is not changed in the normal state by the alarm state c and the state change notice e stored in the alarm status, the alarm processing means determines whether the observation data is normal. It outputs a normal status notification, outputs an alarm status notification (or status change notification) when the status changes from the normal status to the alarm status, and outputs a normal status return notification when the status changes from the alarm status to the normal status. .

According to the status information output from the alarm judging means 30 in this way, the output judging means 40 includes a screen display device 63, a printer output device 64, an alarm window display device 61 provided on a monitor panel, and an alarm. The following output is made to the sound device 62.

FIG. 23 shows an example of an alarm display on the screen display device 63. On the display screen, the time of occurrence, the input point number indicating the occurrence, the input point name specifically indicating the occurrence, the current value, The unit and limit value are displayed. When an alarm is generated at a certain monitoring point on the display screen, for example, an input point number ZT0006, an alarm indicating that an upper limit deviation has occurred in the bearing temperature of the motor 1 is displayed in red, for example, and the input point number is displayed. Flicker is displayed (in the figure, the display is indicated by a wavy line). In addition, a warning indicating that the lower limit has been deviated from the input point number ZT0002 and the main steam temperature is displayed in red, and the input point number is similarly flickered. Further, as a case where the alarm limit value is not set as the contact input information, the ZT000
8. If the thermocouple at the bearing temperature of the motor 2 breaks, a thermocouple break is displayed. Further, when an ON alarm is generated, for example, ZD0403, "ON" is displayed as a process input / output device PI / O board error, and when an OFF alarm is generated, for example, ZD005
2. “OFF” is displayed as the online error of the man-machine process.

In this manner, when an alarm is generated, a flicker display indicating that the alarm has been generated is displayed on the screen display device 63. When the operator confirms that the alarm has been generated, the flicker display is stopped, and the display color is changed. Is also changed from red to, for example, a display color softer than that, for example, magenta.

On the other hand, when the normal state notification is output from the alarm processing means, the displayed alarm information is changed to, for example, green display indicating the normal state as shown in FIG. Thereafter, if the operator confirms, the alarm display is deleted from the screen.

FIG. 25 shows a printer screen display device 63.
The display content is almost the same as that of the screen display device 63, but flicker display is not performed. For example, when an alarm occurs, the display is printed in red. In the case of normal recovery, black printing is performed as shown in FIG. 26, and "normal recovery" is printed and displayed in the limit value column.

The alarm window display device 61 provided on the monitoring panel
In FIG. 27, for example, as shown in FIG. 27, display windows corresponding to each generated alarm are arranged in a matrix. The alarm window display device 61 can display four levels of flicker display in red, non-flicker display in red, green display, and extinguishing for each display window. When a notification of a state change is sent from the alarm processing means, the display window corresponding to the occurrence location is displayed in red and flicker according to the state information. Thereafter, the flicker display is stopped when the operator confirms that the alarm has been generated.
The alarm window display device 61 is not provided for each monitoring point, and one display window corresponds to a plurality of monitoring points related to the display. For example, the alarm window display device 61 relates to “Pump 1”. When an alarm occurs at any of the plurality of monitoring points, the alarm window display device 61 of “Pump 1” is displayed.

On the other hand, when the normal state return notification is output from the alarm processing means, the display is changed to green, and when the operator confirms the display, the display window is turned off. In addition, the same display as the alarm window display device 61 can also be performed on the screen display device 63.

Next, a detailed display method in the alarm window display device 61 will be described. The output determining means 40 includes:
A storage area for storing alarm window output information as shown in FIG. 28 is provided for each display window. More specifically, from the upper right to the lower right, from the upper center to the lower center,
Then, so as to correspond from the upper left to the lower left, the alarm window information 1,
Alarm window information 2,..., Alarm window information (j-1), alarm window information j and j alarm window information are provided. Each storage area has
An alarm counter-1 indicating a pointer of an alarm that has occurred;
Contact output information indicating a monitoring point corresponding to the alarm window information and an alarm name indicating an alarm content to be displayed on the display window are stored. When an alarm status notification is output from the alarm determination means 30, the corresponding alarm window information j is extracted from the alarm window information corresponding to the point information at which the alarm has occurred, added to the alarm counter-1 by one count as a pointer, and stored. I do. Then, an alarm is displayed on the corresponding display window. Further, when an alarm is output from another monitoring point, the value of the alarm counter-1 of the corresponding alarm window information j is incremented by one.

Next, if a normal return state notification is received and the monitoring point returns to the normal state, the alarm window information j is saved by subtracting 1 from the alarm counter-1. If the alarm counter becomes "0", the alarm window information j becomes applicable. Clear the alarm display from the display window. If the alarm counter is not "0", there is a monitoring point which is still in an alarm state, and the display window is kept lit. Therefore, the display window is turned off only after all of the plurality of monitoring points related to the display window have returned to the normal state.

At this time, in the plant monitoring system, a display similar to that of the alarm window display device 61 can be displayed on the screen display device 63, and an alarm is output from the alarm judgment means 30. Then, the alarm name is read from the corresponding alarm window information, and the alarm name is displayed on the screen display device 63.

When an alarm state is notified from the alarm determining means 30 and an alarm is output, the alarm sound device 62 is activated, for example, by operating a buzzer to notify the operator, and the operator is notified that the alarm has been generated. Is confirmed, the alarm sound device 62 is stopped. When the normal state is restored, the operation of the plant is not particularly hindered, and the alarm sound device 62 is not operated.

[0030]

In a plant provided with such a plant monitoring system, an alarm check is performed in accordance with plant information stored in a computer for a plant or the like, that is, point information, and the result is described above. As described above, the operation status of the plant is monitored by outputting an alarm message on the alarm screen of the screen display device 63 or sounding an alarm sound. On the other hand, in plant operation, not only monitoring by such a monitoring system, but also plant maintenance staff regularly patrol the actual plant site for maintenance of the plant, and perform predetermined maintenance and inspection work on a predetermined date. I was

In some cases, an abnormality of the plant is detected during the maintenance and inspection work. In the plant monitoring system, various alarms are issued assuming that an alarm has occurred. Therefore, the plant operator performs the plant alarm monitoring process by determining whether the generated alarm is due to a plant abnormality or a maintenance and inspection operation.

In addition, a predetermined operation is performed on the plant monitoring system in consideration of a warning that will be generated in the scheduled maintenance and inspection work so as not to generate a warning about the point information at which the warning is generated. Every
In some cases, the generation of alarms was suppressed.

Furthermore, in recent plant monitoring systems, the stoppage of the plant for maintenance and inspection work is decreasing due to the improvement in accuracy of plant equipment and the like. In such a case, the entire plant apparatus is not stopped but is partially operated using auxiliary equipment or equipment (alternative equipment), which is called online maintenance.

[0034] In such a conventional plant monitoring system, each time the plant operator alarm is generated, the alert or determines whether or not by the maintenance and inspection work, or in advance what maintenance work It is necessary to know whether the operation is being performed, which increases the monitoring burden on the operator.

Further, if such an alarm is not generated due to the maintenance and inspection work, the alarm generated during the maintenance work by the maintenance staff cannot be confirmed. There was also a problem that it could not be reflected.

Further, when an alternative machine is used at the time of maintenance and inspection, various observation data for measuring the performance of the plant and daily log data are greatly different from the observation data of the actual plant, so that the observation data may be defective. This required a great deal of effort to restore observation data. In addition, during plant monitoring, various display data (graph data and measurement data) displayed on the screen display device 63 are displayed as if they were original observation data, despite being observation data during maintenance and inspection. There was a problem that plant monitoring could not be performed normally.

The present invention has been made in view of the above problems, and it is an object of the present invention to monitor a plant operation during a maintenance work by accurately grasping the plant operation. The task is to make the work easier.

[0038]

According to a first aspect of the present invention, there is provided a plant monitoring system for reading various kinds of observation data at each monitoring point on a plant, and reading the various pieces of observation data at the reading processing unit. Alarm determination means for determining an abnormality in observation data, output determination means for outputting alarm information determined by the alarm determination means to an external output means, and an alarm limit value which is a criterion at each monitoring point is temporarily determined. Point information storage means for storing, inspection information input means for inputting maintenance inspection information corresponding to the monitoring point, and the alarm information based on the maintenance inspection information input from the inspection information input means, during the maintenance inspection work. An inspection determining means for determining whether or not an alarm has occurred;
An external output unit is provided which is capable of distinguishing and outputting an alarm during maintenance and inspection and an alarm during operation based on a judgment result by the inspection judgment unit.

According to the first aspect, since the contents of the alarm are output to the external output means while distinguishing between the alarm during the maintenance and the normal operation and the alarm during the normal operation, the plant operator can identify abnormalities during the maintenance and inspection. Or an abnormality during normal operation can be easily determined.

The plant monitoring system according to the second aspect of the present invention includes a maintenance group list in which monitoring points to be inspected are grouped and an interactive device as the inspection information input means. The maintenance inspection information corresponding to the monitoring point can be input by selecting the maintenance group list.

As a result, it is possible to set a monitoring target to be subjected to maintenance and inspection through the interactive device. Therefore, a monitoring point for maintenance and inspection can be selected without going to the plant site, and the monitoring burden on the plant can be further reduced.

Further, the plant monitoring system according to the third aspect of the present invention is characterized in that monitoring points grouped in the maintenance group list can be edited by the interactive device. As a result, it is possible to immediately respond to changes in maintenance and inspection work and the like.

The plant monitoring system according to a fourth aspect of the present invention includes an alarm window display device for displaying an alarm corresponding to a plant component under maintenance and inspection as the external output means. An alarm counter generated during inspection and an alarm counter generated during normal operation are provided in the output determination means corresponding to the constituent parts,
It is characterized in that an alarm during maintenance and inspection work and an alarm during normal operation are distinguished by a corresponding alarm counter and can be output to the alarm window display device.

In this plant monitoring system, an alarm during maintenance and inspection is distinguished from an alarm during normal operation.
It is possible to comprehensively recognize the plant component where the alarm has occurred.

The plant monitoring system according to a fifth aspect of the present invention is the plant monitoring system according to the fifth aspect, wherein the external output means further displays an alarm display corresponding to a plant component under maintenance and inspection. A warning display during the maintenance and inspection work and a warning during normal operation can be output to the screen display device by using the corresponding alarm counter.

In this case, it is possible to distinguish between the alarm during maintenance and inspection work and the alarm during normal operation, and to more specifically grasp the plant component where the alarm has occurred.

A plant monitoring system according to a sixth aspect of the present invention is the plant monitoring system according to the first aspect, further comprising maintenance information storage means for storing at least alarm information during the maintenance and inspection work. I have.

By providing the maintenance information storage means as described above, it is possible to record that an alarm has been generated even if the printer has failed or various output devices do not operate due to some inconvenience. Can be easily performed.

According to a seventh aspect of the present invention, in the plant monitoring system, the information point storage means stores an inspection set value serving as simulated observation data during the inspection, and determines an object based on the inputted maintenance inspection information. The inspection setting value is applied as observation data of a monitoring point.

In this plant monitoring system, since the pseudo observation data is used during the maintenance and inspection work, it is determined that normal operation is being performed, so that it is not necessary to correct the observation data. Maintenance and inspection of observation data is not required.

[0051]

FIG. 1 is a schematic configuration diagram of a plant monitoring system corresponding to claim 1 of the present application, and FIGS.
FIG. 2 is an explanatory diagram showing a structure of point information stored in point information storage means in the plant monitoring system of FIG. 1; FIG. 2 shows a case where the point information is analog information; It shows about. 4 to 7 are explanatory diagrams each showing an example of a message output from the external output means in the plant monitoring system of FIG. 1. FIG. 4 is an example of an alarm message displayed on a screen display device, and FIG. 5 is a screen display. 6 is an example of a warning message output to the printer output device, FIG. 7 is an example of a normal recovery message output to the printer output device, and FIG. 8 is another example corresponding to claim 1 of the present application. 1 is a schematic configuration diagram of a plant monitoring system according to an embodiment.

FIG. 9 is a schematic block diagram of a plant monitoring system according to claims 2 and 3 of the present invention, and FIG.
FIG. 11 is an explanatory diagram showing a maintenance group list in the plant monitoring system of FIG. 9, and FIG. 11 is an explanatory diagram showing point information and a related maintenance group list in the plant monitoring system of FIG.

FIG. 12 is a schematic configuration diagram of a plant monitoring system according to claims 4 and 5 of the present application, FIG. 13 is an explanatory diagram showing an example of an alarm display of an alarm window display device in the plant monitoring system of FIG. 12, and FIG. FIG. 3 is a configuration diagram showing a configuration of alarm window output information in the plant monitoring system.

FIG. 15 is a schematic configuration diagram of a plant monitoring system according to claim 6 of the present application, FIG. 16 is a schematic configuration diagram of a plant monitoring system according to claim 7 of the present application, and FIG. FIG. 5 is an explanatory diagram in which point information and a related maintenance group list in the monitoring system are partially omitted.

The plant monitoring system shown in FIG. 1 is a plant monitoring system according to claim 1, wherein the plant monitoring system reads various observation data at each monitoring point on the plant 10.
0, an alarm judging means 30 for judging an abnormality of the observation data read by the reading processing means 20, and the alarm information judged by the alarm judging means 30 to various external output means 60 (for example, an alarm window display device). 61, an alarm sound device 62, a printer output device 64, etc.), a point information storage device 50 for temporarily storing an alarm limit value and observation data as a criterion for each monitoring point, Inspection information input means 70 for inputting maintenance inspection information corresponding to the monitoring point, and based on the maintenance inspection information input from the inspection information input means 70,
Inspection determining means 80 for determining whether the alarm information is an alarm during maintenance and inspection work, and monitoring information on alarms generated during normal operation and maintenance information storage for recording maintenance information on alarms generated during inspections Means 90 are provided. That is, the plant monitoring system differs from the conventional plant monitoring system shown in FIG. 18 in that an inspection information input unit 70 for inputting maintenance inspection information at each monitoring point, an inspection determining unit 80, and a maintenance information storage unit 90 are provided.

The inspection information input means 70 is, for example, a maintenance / inspection switch provided for each auxiliary machine or each unit as an alternative machine, and reads ON / OFF information as to whether or not maintenance is being performed at a corresponding monitoring point. Output to the processing means 20. As the inspection information input means 70, for example, an interactive device 71 such as a CRT display using a touch sensor or the like is used, and on / off information of the maintenance inspection switch can be input according to the display content on the screen. That is, when performing a maintenance check, the maintenance check switch is turned on from the check information input means 70 (interactive device 71), whereby
A maintenance check notification is output to the read processing means 20 and the check determination means 80 as a check ON notification. Also, when the maintenance and inspection are completed and the operation returns to the normal operation, the maintenance and inspection switch is turned off from the inspection information input means 70, so that the maintenance and inspection notification is transmitted as the inspection off notification to the reading processing means 20 and the inspection determining means 80. Is output to Here, at the monitoring point where the maintenance inspection notification is selected, the inspection information is either inspection ON or inspection OFF and is expressed as a binary value, so that the monitoring point is a contact point storing contact input information. It is stored in the point information storage means 50 as an input monitoring point.

The read processing means 20 reads the observation data (analog information) and the observation data (contact input information) represented by binary values at each of the monitoring points, and outputs the read point information to the point information storage means 50. . Further, it outputs an alarm confirmation notice to the alarm judgment means 30. Further, when the read processing unit 20 detects the inspection ON notification or the inspection OFF notification output from the inspection information input unit 70, the reading processing unit 20 uses the point information stored in the point information storage unit 50 to perform a field related to the inspection processing, specifically, Confirms the content of the inspection index from the following point information, and notifies the inspection judgment means 80 of "notification of presence of inspection".
Alternatively, a “notification without inspection” is performed.

The point information storage means 50 stores point information at each monitoring point. As shown in FIG. 2 and FIG. 3, the point information is stored separately for the case where the point information is analog information and for the contact input information. For each point, analog monitoring point 1, analog monitoring point 2,..., Analog monitoring point (m−1), and m analog monitoring points up to analog monitoring point m are recorded. In the case of the contact input information, the contact input monitoring point is set as the contact input monitoring point 1 for each monitoring point.
Contact input monitoring points 2,..., Contact input monitoring points (n-1), and n contact input monitoring points up to the contact input monitoring point n are recorded.

As shown in FIG. 2, each analog monitoring point has an input point number, an input point name, an alarm upper limit value, an alarm lower limit value, a unit, alarm window information, and a current value (previous value) as in the conventional example. , A current value (read value), an alarm status, and a spare field are stored, and an inspection index and an inspection request counter are newly stored as the point information.
Here, the inspection index field is a field for recording the above-mentioned notification of presence of inspection and the notification of no inspection, and stores the inspection ON notification or the inspection OFF notification output from the inspection information input means 70 by the read processing means 20. . In the inspection request counter field, points used when outputting to the external output means 60 are recorded.

On the other hand, as shown in FIG. 3, the input point number, the input point name, the alarm upper limit value, the alarm lower limit value, the unit, the alarm window information, the current value (Previous value), current value (read value), alarm status, and spare field are stored. In addition to the conventional example, an inspection index and an inspection request counter are newly stored as the point information. Then, the check item pointer is further stored. The inspection item pointer is a pointer indicating the recording position of the inspection item list corresponding to the monitoring point, as described below.

The inspection item list is configured so that a plurality of monitoring point areas related to the contact input monitoring point can be set. For example, in the inspection item list corresponding to the contact input monitoring point 2 shown in FIG. 3, three monitoring points, namely, the contact input monitoring point 2, the contact input monitoring point 5, and the contact input monitoring point (n-1).
Is set. In the inspection item list corresponding to the contact input monitoring point 3, an analog monitoring point 3, a contact input monitoring point 4, and an analog monitoring point (m-2) are set. Further, a symbol indicating that the field is blank, for example, “#FFFF” is stored in an empty area of the inspection item list.

The inspection judging means 80 includes the read processing means 20
The inspection determination process is performed based on the inspection presence notification or the inspection non-existence notification output from the inspection information input unit 70 and the inspection ON notification or the inspection OFF notification output from the inspection information input unit 70.
After that, as necessary, the alarm determination means 30 outputs, as a check processing notification, a "check start flag" indicating that the monitoring point under check is being checked or a "check end flag" indicating that the check has been completed.

Next, the processing in the inspection determining means 80 will be specifically described. For example, let us consider a case where the inspection ON notification is input at the contact input monitoring point 3. The inspection at the contact input monitoring point 3 is performed from the inspection information input means 70, and an inspection ON notification is read from the read processing means 2.
Input to 0. The read processing means 20 checks the check index at the contact input monitoring point 3 and notifies the check determination means 80 of the presence of the check.

The inspection judging means 80 includes the read processing means 20
Upon receiving the inspection presence notification and the inspection ON notification from the inspection information input means 70, the access point information storage means 50 is accessed and the relevant monitoring points are read from the required inspection item list.

Next, the inspection judging means 80 accesses the information point information storage means 50 and, when another maintenance inspection switch (monitoring point) is turned on in the read point information corresponding to the analog monitoring point 3, In addition, the inspection request counter is incremented by one so as to be able to cope with the above.

Subsequently, the inspection request counter is incremented by one to the point information corresponding to the contact input monitoring point 4. Similarly, the inspection request counter is incremented by one at the analog monitoring point (m-2). Thus, "#FF
The check item list is checked until a blank of "FF" appears, and all the check item lists are processed. When such processing is completed, an inspection processing notification that informs that the inspection is being performed, for example, an “inspection start flag”, is output to the alarm determination means 30 for all monitoring points recorded in the inspection item list. This notifies that the monitoring point is under inspection.

On the other hand, consider a case where inspection-off information is input at the contact input monitoring point 3. When the inspection is completed, the inspection information input means 70 sends a contact input monitoring point 3
Is notified to the reading processing means 20. The read processing means 20 confirms the contents of the check index at the contact input monitoring point 3 and notifies the check judgment processing means of the presence of the check.

The inspection judging means 80 includes the reading processing means 20
Upon receiving the inspection presence notification and the inspection off notification from the inspection information input unit 70, the access point unit 50 accesses the point information storage unit 50 and sequentially reads out the related monitoring points from the necessary inspection item list. Specifically, three monitoring points from the inspection item list at the contact input monitoring point 3 to “#FFFF” are read.

First, the analog monitoring point 3 is read from the inspection item list, one count is subtracted from the inspection request counter of the analog monitoring point 3, and it is confirmed whether or not the value becomes "0". Record At this time, if the inspection request counter is “0” or more, it means that the inspection is being performed at another monitoring point. Therefore, when the value is equal to or greater than “0”, the state of “checked” is held as the check index.

Next, the contact input monitoring point 4 is read from the inspection item list, similarly, the inspection request counter is decremented by one, and after confirming that it is "0", "no inspection" is recorded in the inspection index. Similarly, the analog monitoring point (m-
Similar processing is performed for 2). Thus, "#FFF
Check the inspection item list until a blank "F" appears,
When the processing of all the inspection item lists is completed, for the monitoring points recorded in the inspection item list, an inspection processing notification that notifies the alarm judging means 30 that the inspection has been completed for each monitoring point, for example, the "inspection end flag"".

Upon receiving the warning confirmation notice, the warning judgment means 30 accesses the point information storage means 50,
The current value and the alarm limit value are read, and the alarm state is determined. The alarm status is determined based on the alarm limit value, and a normal status notification or an alarm status notification and an alarm status change notification (hereinafter, referred to as “status information”) are output determination means 40.
Output to At this time, the inspection processing notification output from the inspection determination unit 80 is output to the output determination unit 40 together with the status information (normal status notification, alarm status notification, or alarm status change notification) when the corresponding monitoring point is determined. . Since the detailed operation of the alarm judging means 30 is exactly the same as that shown in FIGS. 21 and 22, the explanation is omitted here.

Next, when the output judging means 40 receives the status information and the check processing notification, the output judging means 40 outputs each output information to the external output means 60 according to the contents of the status information and the contents of the check processing notification. The external output means 60 is operated.
For example, if the status information is the alarm status notification, the alarm window display information is output to turn on the alarm window display device 61 of the monitoring panel, or the alarm sound output information is output to sound the buzzer of the alarm sound device 62. Further, it outputs display output information to display an alarm message on the screen display device 63, and outputs printer output information to output an alarm message to the printer output device 64. Note that the alarm window display device 61 can be configured on a screen display device such as a CRT.
1 can also be used (the same applies to the following embodiments).

If the status information is a normal status return notification, the alarm window display device 61 of the monitoring panel is turned off, the alarm message on the screen display device 63 is deleted, and a normal recovery message is output to the printer output device 64. Perform If the notification is a status change notification, a status change message is output to the printer output device 64. At this time, if the inspection process notification indicates that the inspection is being performed, a display indicating that the inspection is being performed is performed, and an alarm different from the alarm generated during normal operation is issued. In such a case, an alarm is issued from the inspection alarm sound device 65.

That is, the output judging means 40 operates the inspection alarm sound device 65 in accordance with the status information and the inspection processing notice output from the alarm processing means. The inspection alarm device 65 may be any device as long as it generates a tone different from the conventional alarm device 62. For example, if the conventional alarm device 62 has a "boo" sound. For example, a sound such as “Pee” may be used.

More specifically, the output judging means 40
When the alarm status notification or the alarm status change notification is output together with the inspection process notification “inspection start flag” output from the alarm processing means, the inspection alarm device 65 is operated. By installing another alarm sound device 62 that emits a tone different from the alarm sound during normal operation, an alarm generated during inspection and an alarm generated during normal operation can be distinguished by hearing. You can also.

FIG. 4 shows an example of an alarm display on the screen display device 63 when an alarm is generated during the inspection. The display screen shows the time of occurrence and the input point number indicating the place of occurrence, almost in the same manner as in the conventional example. , An input point name, a current value, a unit, and a limit value that specifically indicate the location where the error occurred. When an alarm is generated at a certain monitoring point on the display screen, for example, an alarm indicating that an upper limit deviation has occurred in the bearing temperature of the ZT0006 motor 1 as an input point number is displayed in purple, for example, and the input point number is displayed. Is displayed as flicker. Also, as the input point number, a warning indicating that a lower limit deviation has occurred is displayed in purple as the ZT0002 main steam temperature, and the input point number is flickered. Also,
If the thermocouple of the bearing temperature of the ZT0008 motor 2 is disconnected, assuming that the alarm input value is the contact input information and the alarm limit value is not set, the alarm is displayed in purple.
Further, when an ON alarm occurs, for example, ZD04
03, the process input / output device PI / O
When the "N" display is displayed in purple and an off alarm occurs, for example, ZD0052, man-machine processing, the "OFF" display is displayed in purple as an online abnormality.

On the other hand, when the normal state return notification is issued from the alarm processing means, the alarm information displayed as shown in FIG. Yes.) Thereafter, if the operator confirms, the alarm display is deleted from the screen.

FIG. 6 shows an example of an alarm display on the printer screen display device 63 when an alarm occurs during the inspection. The display content is almost the same as that of the screen display device 63, but the flicker display is not performed. Not performed, for example, printed in red, for example, "★" indicating that inspection is being performed is printed on the side of the input point number. When the normal operation is restored, "normal restoration" is printed and displayed as shown in FIG. 7, and also in this case, "★" indicating that the inspection is being performed is also printed on the input point number side. .

In the present embodiment, the alarm window display device 61 and the alarm sound device 62 provided on the monitoring panel follow the contents of the state information regardless of the contents of the inspection processing notice in the same manner as the conventional example. If there is an alarm generation notification or an alarm state change notification, a predetermined display window is turned on and an alarm sound is generated (the same applies to the following embodiments).

As described above, the provision of the inspection judging means 80 for outputting the notification of the inspection processing makes it possible to output an alarm different from the alarm generated during the normal operation during the inspection processing. Can be simplified.

Further, the plant monitoring system is provided with a maintenance information storage means 90, which will be described in detail with reference to the plant monitoring system shown in FIG. 15 described below.

Next, the plant monitoring system shown in FIG. 8 will be described. As shown in FIG. 8, the plant monitoring system has substantially the same configuration as that of the plant monitoring system shown in FIG. 1, but does not include the maintenance information storage unit 90, and has a dialogue as an inspection information input unit. The device 71 is not provided. That is, this is a simplified configuration of the plant monitoring system shown in FIG. 1. In the plant monitoring system, on / off information indicating whether maintenance and inspection is being performed is performed by, for example, changing a hardware switch or other software. It is made possible to input.

Also in this plant monitoring system, it can be easily determined whether or not the generated alarm is during the operation check, and the monitoring burden at the time of plant monitoring can be reduced.

Next, the plant monitoring system shown in FIG. 9 will be described. The plant monitoring system according to claim 2
As shown in FIG. 9, the plant monitoring system has substantially the same configuration as that of the plant monitoring system shown in FIG. Device 71 that allows the user to select and input
Is provided. Note that the maintenance information storage means 90 is omitted.

The inspection information input means 70 shown in FIG. 1 is a maintenance / inspection switch provided for each of the various auxiliary machines and devices, and the maintenance staff can turn on / off information of the switch into an interactive device for each of the various auxiliary machines and devices. In the plant monitoring system, the maintenance group can be selected and input easily from the CRT screen by the interactive device 71 such as a touch sensor.

In the plant monitoring system, monitoring points to be subjected to maintenance and inspection are grouped. When a specific maintenance group is selected from the interactive device 71, the maintenance and inspection notification is sent to the read processing means. 20 and output to the inspection determination means 80.

The maintenance group is a group in which some plant components constituting the plant are grouped, and at the same time means a set to be subjected to maintenance and inspection, and related monitoring points are grouped together. I have.
This maintenance group is stored as a maintenance group list in the point information storage means 50 and the interactive device 71. For example, as shown in FIG. 10, maintenance group 1, maintenance group 2,..., Maintenance group (i-1), A total of i maintenance groups up to the maintenance group i are formed. Each maintenance group stores an inspection item pointer and an inspection index. For example, in the maintenance group shown in FIG. 10, the maintenance group 1 has an analog monitoring point 3, a contact input monitoring point 4, and an analog monitoring point (m-2).
Are grouped. In the maintenance group 2, the contact input monitoring point 2, the contact input monitoring point 5, and the contact input monitoring point (n-2) are grouped.
These maintenance groups are related by the check item pointer.

As the inspection item pointer, as shown in FIG. 11, the same pointer as the inspection item pointer stored in the point information of the corresponding contact input monitoring point is used. The maintenance group is displayed on the interactive device 71 so as to be selectable. That is, the maintenance group corresponds to the inspection item list in the plant monitoring system shown in FIG.

Therefore, when the maintenance group is displayed on the interactive device 71 and the maintenance group 1 is selected from the interactive device 71 as shown in FIG. 11, for example, the inspection information input means 70 reads the corresponding maintenance group. Notify the means 20. Next, the read processing means 20 reads the inspection item list (1) from the inspection item pointer, and designates the corresponding monitoring points, ie, the analog monitoring point 3, the contact input monitoring point 4, and the analog monitoring point (m-2). Then, the inspection determination means 80 is notified of the presence or absence of the inspection.

Next, the same processing as that of the plant monitoring system shown in FIG. 1 is performed, and abnormalities during inspection are output to the screen display device 63, the printer output device 64, the alarm sound device 62, and the like.

[0091] Such an interactive device 71 does not need to be installed at an actual site, and can be installed, for example, as a terminal of a computer that supervises a plant monitoring system. As a result, maintenance and inspection instructions can be given without going to the plant site, and the workload of maintenance personnel can be reduced.

In this plant monitoring system, the maintenance group can be easily rearranged as necessary. That is, by changing the check item pointers corresponding to the maintenance groups, the monitoring points corresponding to the selected maintenance groups can be changed collectively. Further, by processing the inspection item list from the interactive device 71, it is possible to easily add, delete, and correct monitoring points to be inspected. As a result, by editing the maintenance group,
Partial trial operation and maintenance work can be supported.

Next, the plant monitoring system shown in FIG. 12 will be described. The plant monitoring system is claimed in claim 4
1 and 5, and has the same configuration as the plant monitoring system shown in FIG. 1 as shown in FIG. In the plant monitoring system, an alarm window display during inspection and an alarm window display during normal operation can be distinguished.

As shown in FIG. 13, the alarm window display device 61 has substantially the same structure as the conventional alarm window display device 61, and has a flicker display in red, a non-flicker display in red for each display window. There are four displays, green display and off. Further, the alarm window display device 61
In this case, a display mark indicating that the inspection is being performed, for example, "●" can be displayed for each display window.

In this plant monitoring system, as shown in FIG. 14, the alarm window information stored in the output judging means 40, which stores the alarm window output information, corresponds to the alarm window information 1 and the alarm window information corresponding to each display window. Window information 2,..., Alarm window information (j-1), and alarm window information j are provided at a maximum of j.
Each alarm window information (storage area) includes an alarm counter indicating a pointer of an alarm generated during normal operation, that is, when an “inspection end flag” is notified as a maintenance inspection notification.
1, the contact output information indicating the monitoring point corresponding to the alarm window information, the alarm name indicating the alarm content to be displayed on the display window, and "inspection start flag" are being notified during the inspection, that is, the maintenance inspection notification. An alarm counter-2 indicating a pointer of an alarm generated in the case is stored.

The alarm counter-1 has the same function as the alarm counter-1 in the conventional example. The alarm counter-2 is a counter used when the output judgment means 40 outputs a check processing notice. It is. When an alarm state notification or a state change notification is output from the alarm determination means 30 together with the "inspection start flag", the corresponding alarm window information j is extracted from the alarm window information corresponding to the point information at which the alarm is generated, and is used as a pointer. One count is added to the alarm counter-2 and stored. Then, an alarm is displayed on the corresponding display window. At this time, since the inspection is underway, a flicker display in red is displayed on the corresponding display window and “●” is displayed on the display window. When an alarm is output from another monitoring point, an alarm counter is output.
One count is added to 2.

Next, when a normal state return notification is received and the state returns to the normal state, the alarm window information j is saved by subtracting one count from the alarm counter-2. When the alarm counter becomes "0", the corresponding display window is displayed. From the alarm display. If the alarm counter is not “0”, the monitoring window in the alarm state still remains, and the display window is turned on. Therefore, at all of the plurality of monitoring points related to the display window, only after returning to the normal state,
The display window is turned off.

In the plant monitoring system, the screen display device 63 can display the same information as the alarm window display device 61.
Is output from the corresponding alarm window information, the alarm name is read out, and the alarm name is displayed on the screen display device 63.
Can be displayed.

In this case, the alarm processing means performs the following operation. First, there is a case where an alarm status notification or an alarm status change notification is output. Alarm counter-1 is zero (=
0), and when the alarm counter-2 is zero (= 0), when an alarm occurs, any alarm counter is zero, so that no processing is performed and the screen display is maintained as it is. I do.

Next, the alarm counter-1 is set to zero or more (0>).
When the alarm counter-2 is zero (= 0), it indicates that an alarm has occurred during normal operation, and the name of the alarm (maintenance group) where the alarm occurred is displayed as flicker in red as before. Note that "●" indicating that the inspection is being performed is not performed.

On the other hand, if the value of the alarm counter-2 is zero or more (0>)
And when the alarm counter-1 is zero (= 0),
This indicates that an alarm has occurred only during the inspection, and the alarm name is displayed on the screen display device 63 in a flicker color other than red, for example, purple. In addition, “●” indicating that the inspection is being performed is displayed in purple on the display screen, for example. If the value of the alarm counter-1 is zero or more (0>) or more, it indicates that an alarm is being generated during the inspection and the normal operation is being performed. The display of “•” indicating an alarm is flicker-displayed, for example, in purple, and the fact that an alarm has been generated during inspection and during normal operation is displayed separately.

Next, the case where the normal state return notification is output will be described. When the alarm counter-1 is zero (= 0) and the alarm counter-2 is zero (= 0), all the monitoring points where an alarm has occurred are in a normal state, and the alarm name is displayed in green. At this time, if "●" is displayed on the screen display device 63, the "●" display is also turned off.

When the value of the alarm counter-1 is zero or more (0>) and the value of the alarm counter-2 is zero (= 0), it indicates that the alarm has not returned to the normal state during the normal operation. The name of the alarm (maintenance group) in which an alarm has been generated as usual is normally displayed in red. In addition, since the abnormality under inspection has returned to normal, if there is a "●" display, the "●" display is turned off.

On the other hand, if the value of the alarm counter-2 is equal to or more than zero (0>) and the value of the alarm counter-1 is zero (= 0), the alarm name of the monitoring point is the monitoring point under inspection, so the alarm name is changed. In addition to the purple normal display, the "●" display indicating that the alarm is under inspection is displayed in purple. If the value of the alarm counter -1 is zero or more (0>) or more, it indicates that both the alarms during the inspection and the normal operation are not in a normal state. In this case, the alarm name is usually displayed in red. For example, a display of “●” indicating that the alarm is under inspection and indicating that the alarm is under inspection is normally displayed in purple, for example, so that the alarm is during inspection and during normal operation.

As described above, the alarm during the inspection and the alarm during the normal operation are distinguished from each other, so that the alarm window display device 61 and the corresponding C are displayed.
By displaying on the screen display device 63 such as an RT display, it is possible to immediately recognize and recognize at a glance whether the alarm is during inspection or during normal operation.

Next, the plant monitoring system shown in FIG. 15 will be described. The plant monitoring system corresponds to claim 6 and has substantially the same configuration as the plant monitoring system of FIG. 1 as shown in FIG.
The printer output device 64 is different in that it also serves as the inspection printer output device 66.

The output judging means 40 in the plant monitoring system sends the maintenance information, such as the input point number and the current value, to the inspection printer output device 66 with respect to the generated alarm when the inspection judging means 80 notifies the inspection processing. Output.

Further, the plant monitoring system includes a maintenance information storage means 90 comprising a recording medium such as a hard disk or a magnetic disk. The maintenance information storage means 90 is for recording at least maintenance information relating to an alarm generated during inspection and monitoring information relating to an alarm generated during normal operation. As the monitoring information, based on the status information output from the alarm determining means 30, for example, an occurrence time, an input point number indicating a location where the occurrence occurred,
Contents substantially similar to the contents displayed on the screen display device 63 and the printer output device 64, such as an input point name, a current value, a unit, and a limit value that specifically indicate the location where the error occurred, are recorded. Also, the same information as the monitoring information is recorded as the maintenance information. In the maintenance information, a maintenance check pointer for distinguishing from the monitoring information is recorded in addition to the contents thereof.

In this plant monitoring system, the output judging means 40 outputs the status information (normal status notification or alarm status notification and alarm status change notification) output from the alarm determining unit 30 and the status information output from the inspection determining unit 80. In response to the notification of the inspection processing, alarm information relating to the normal operation and maintenance information relating to the maintenance inspection are output to the maintenance information storage unit 90.

In this way, by automatically recording at least the alarm during the maintenance and inspection, the recording operation of the operator can be simplified. Also, past inspection information can be easily retrieved.

Further, in the plant monitoring system, when the inspection printer output device 66 is out of order or when the output stop request to the printer output device 64 is issued, the monitoring information and the maintenance information are maintained. Information storage means 90
Only when a certain amount is recorded, or automatically or interactively, to print out to the printer output device 64 or the printer output device 66 for inspection.
It is also possible to configure the output determining means 40. Also,
The maintenance information recorded in the maintenance information recording means can be output to the printer output device 64 only when the operator gives an instruction without the inspection printer output device 66.

Next, the plant monitoring system shown in FIG. 16 will be described. This plant monitoring system is a plant monitoring system according to claim 7, and has the same configuration as the plant monitoring system of FIG. 9 as shown in FIG. That is, in the plant monitoring system, a dialog device 71 such as a CRT display using a touch sensor or the like is provided as the inspection information input means 70.

In this plant monitoring system, a maintenance group (monitoring point) to be inspected from the interactive device 71
Can be selected and input, and when a maintenance group to be inspected is selected, a pseudo measurement value recorded in the point information of the monitoring point is input as observation data. That is, the point information is shown in FIG.
As shown in FIG. 7, in the case of analog input information, an inspection set value is recorded for each analog monitoring point, and in the case of contact input monitoring information, an inspection set value is recorded for each contact input monitoring point. (Note that in FIG. 17,
The maintenance group list is omitted. ).

As the inspection set value, in the case of analog input information, a substantially average measured value is set as a normal value, and in the case of contact input information, ON information or OFF information is stored as a steady value.

In the plant monitoring system, when a check-on notification is output from the check information input means 70, the check determining means 80 records "check is performed" as a check index, similarly to the plant monitoring system shown in FIG. . At this time, the inspection determination means 80 rewrites the inspection set value recorded in the point information to the current value (previous value). Thereafter, the alarm determination means 30 does not replace the current value (read value) with the current value (previous value), that is, step 115 in FIG. 21 and step 220 in FIG.
To skip.

On the other hand, when the check-off notification is output from the check information input means 70, the check determining means 80 returns to the above-described normal check processing, and changes the observation data read from the read processing means 20 to the current value (read Value), and the alarm determining means 30 determines that the skipped step 1
15 and step 220 to update the current value.

In this way, the alarm determination process is performed with a constant value during the inspection. For this reason, the observation data obtained is always constant and is not affected by the observation data obtained by the inspection work, so that it is not necessary to perform post-processing such as maintenance of abnormal data generated by the inspection work. As a result, plant operation monitoring can be performed without losing normal operation information.

Further, by introducing the interactive device 71, it is possible to correct the inspection set value set at the monitoring point, and when it is desired to make an alarm judgment without using the inspection set value. For example, by setting the symbol “#FFFF” as the inspection set value, the inspection set value can be prevented from being rewritten.

Of course, the present invention is not limited to the above embodiments, and various embodiments can be considered without departing from the object of the present invention. For example, it is also conceivable to group the work areas and add them to the inspection item list in an extension work in units of the auxiliary equipment and each component device of the plant. In this case, the system can be added online, that is, the extension work can be performed while monitoring the plant. In addition, during the period from the test adjustment of a new plant operation to the start of operation, plant construction is grouped to perform plant monitoring by starting partial operation and operation monitoring of test operation adjustment. Is also possible.

Further, in the present invention, the screen display device 6
Although it is assumed that a CRT display dedicated to the plant monitoring system is used as 3, the screen display device 63 such as a CRT display can be shared with another plant monitoring system. By making the display screen callable, it goes without saying that an alarm display can be displayed on a CRT display or the like used in another plant monitoring system.

[0121]

According to the present invention, an alarm generated during inspection and an alarm generated during normal operation are distinguished and output to a screen display device, a printer output device, an alarm window display device, an alarm window display device, and the like. Therefore, it is possible to immediately understand which alarm is being issued without determining whether the alarm is under inspection. As a result, the monitoring burden on the plant operator can be greatly reduced.

Further, as in the plant monitoring system according to the second or third aspect of the present invention, a dialogue device is provided, and a maintenance group to be inspected can be selected and input from the dialogue device, so that a maintenance inspection is performed. A monitoring point can be specified from a remote place, and maintenance work and monitoring work are further facilitated. In particular, by editing the maintenance group from the interactive device as in the plant monitoring system according to the third aspect, it is possible to cope with partial maintenance and inspection of the plant or partial trial operation.

Further, as in the plant monitoring system according to the sixth aspect, by storing at least the contents of the alarms generated during the inspection, it is possible to cope with a failure of the printer output device, accumulate the data, and check the data thereafter. Can be easily performed.

In the plant monitoring system according to the seventh aspect, since the pseudo observation data is used in particular, no abnormality is detected during maintenance and inspection, and unnecessary processing such as correction of the observation data can be omitted.

As described above, according to the present invention, an alarm during maintenance and inspection and an alarm during normal operation can be immediately distinguished and determined.
It can greatly contribute to the safe operation of the plant. In addition, since the normal operation can be resumed after the completion of the inspection, it is possible to safely and promptly return the plant having completed the maintenance and inspection to the normal monitoring system using the auxiliary equipment and the like.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a plant monitoring system according to claim 1 of the present application.

FIG. 2 is an explanatory diagram showing the structure of point information stored in point information storage means in the plant monitoring system of FIG.

FIG. 3 is an explanatory diagram showing a structure of point information stored in point information storage means in the plant monitoring system of FIG. 1;

FIG. 4 is an explanatory diagram showing an example of a message output from external output means in the plant monitoring system of FIG. 1;

FIG. 5 is an explanatory diagram showing an example of a message output from external output means in the plant monitoring system of FIG. 1;

FIG. 6 is an explanatory diagram showing an example of a message output from external output means in the plant monitoring system of FIG. 1;

FIG. 7 is an explanatory diagram showing an example of a message output from external output means in the plant monitoring system of FIG. 1;

FIG. 8 is a schematic configuration diagram of a plant monitoring system according to another embodiment corresponding to claim 1 of the present application.

FIG. 9 is a schematic configuration diagram of a plant monitoring system according to claims 2 and 3 of the present application.

FIG. 10 is an explanatory diagram showing a maintenance group list in the plant monitoring system of FIG. 9;

11 is an explanatory diagram showing point information and a related maintenance group list in the plant monitoring system of FIG. 9;

FIG. 12 is a schematic configuration diagram of a plant monitoring system according to claims 4 and 5 of the present application.

FIG. 13 is an explanatory diagram showing an example of an alarm display of an alarm window display device in the plant monitoring system of FIG. 12;

14 is a configuration diagram showing a configuration of alarm window output information in the plant monitoring system of FIG.

FIG. 15 is a schematic configuration diagram of a plant monitoring system according to claim 6 of the present application.

FIG. 16 is a schematic configuration diagram of a plant monitoring system according to claim 7 of the present application.

FIG. 17 is an explanatory diagram showing point information and a related maintenance group list in the plant monitoring system of FIG. 16;

FIG. 18 is a schematic configuration diagram of a conventional plant monitoring system.

FIG. 19 is an explanatory diagram showing the structure of point information stored in point information storage means.

FIG. 20 is an explanatory diagram showing the structure of point information stored in point information storage means.

FIG. 21 is a flowchart showing an alarm judgment process in an alarm judgment unit.

FIG. 22 is a flowchart showing an alarm judgment process in an alarm judgment unit.

FIG. 23 is an explanatory diagram showing an example of an alarm message displayed on the screen display device.

FIG. 24 is an explanatory diagram showing an example of a normal return message displayed on the screen display device.

FIG. 25 is an explanatory diagram showing an example of an alarm message issued to a printer output device.

FIG. 26 is an explanatory diagram showing an example of a normal return message output to the printer output device.

FIG. 27 is an explanatory diagram showing an example of an alarm display on the alarm window display device.

FIG. 28 is an explanatory diagram showing a configuration of alarm window output information output from the output determining means.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Plant 20 ... Read input means 30 ... Alarm judgment means 40 ... Output judgment means 50 ... Point information storage means 60 ... External output means 61 ... Alarm window display device 62 ... Alarm sound device 63 ... Screen display device 64 ... Printer output device 65: alarm sound device for inspection 66: printer output device for inspection 70: inspection information input means 71: dialogue device 80: inspection determination means 90: maintenance information storage means

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Yaeko Kikuchi 1 Toshiba-cho, Fuchu-shi, Tokyo F-term in the Fuchu Plant of Toshiba Corporation 2F076 BA14 BA16 BE04 BE07 BE09 BE10 BE13 5C087 AA02 AA03 AA10 AA12 AA16 AA22 AA23 AA24 AA33 AA42 CC02 CC05 CC46 DD08 DD22 EE05 EE11 EE16 FF01 FF04 GG18 GG19 GG23 GG29 GG30 GG31 GG50 GG51 GG57 GG66 5H223 AA03 AA15 CC08 DD03 EE05 EE06 EE08 EE18

Claims (7)

[Claims] 1. A reading processing means for reading various observation data at each monitoring point on a plant, an alarm judging means for judging an abnormality of the observation data read by the reading processing means, and a judgment by the alarm judging means. Output determination means for outputting the generated alarm information to external output means,
Point information storage means for temporarily storing an alarm limit value as a criterion for each monitoring point, inspection information input means for inputting maintenance inspection information corresponding to the monitoring point, and input from the inspection information input means. Inspection determination means for determining whether or not the alarm information is an alarm during maintenance and inspection work, based on the maintenance and inspection information, and an alarm during maintenance and inspection work and an operation during operation based on the determination result by the inspection and determination means. A plant monitoring system comprising: an external output unit that is capable of outputting an output while distinguishing the alarm. 2. A maintenance group list in which monitoring points to be inspected are grouped, and a dialogue device is provided as the inspection information input means, and the maintenance point list is selected from the dialogue device to provide the monitoring points. The plant monitoring system according to claim 1, wherein maintenance inspection information corresponding to (i) can be input. 3. The plant monitoring system according to claim 2, wherein said dialogue device enables editing of the monitoring points grouped in said maintenance group list. 4. An external window means comprising an alarm window display device for displaying an alarm corresponding to a plant component under maintenance / inspection, and said output judging device corresponding to said plant component under inspection. Alarm counter generated during normal operation and an alarm counter generated during normal operation, and the corresponding alarm counter can distinguish between the alarm during maintenance and inspection and the alarm during normal operation and output the alarm window display device. The plant monitoring system according to claim 1, wherein: 5. An external output means further comprising a display device for displaying an alarm corresponding to a plant component under maintenance and inspection, wherein an alarm during maintenance and inspection and an alarm during normal operation are provided by the corresponding alarm counter. The plant monitoring system according to claim 4, wherein the output can be output to the display device by distinguishing the above. 6. The plant monitoring system according to claim 1, further comprising maintenance information storage means for storing at least alarm information during the maintenance and inspection work. 7. An inspection set value serving as pseudo observation data during inspection is stored in the information point storage means, and the inspection set value is obtained as observation data of a target monitoring point based on the input maintenance inspection information. The plant monitoring system according to claim 1, wherein: