JP3297284B2 - Alarm control value setting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alarm control value setting device in a plant operation monitoring device.

[0002]

2. Description of the Related Art Generally, in a plant operation monitoring apparatus, a plant to be monitored is divided into several units, and a process flow for each of the units is graphically represented by a CRT.
The process value displayed on the display device and measured by flow meters, thermometers, pressure gauges, and other instruments (hereinafter, referred to as tags) installed in each part of the plant is indicated by a tag number at a corresponding position on the process flow. When the process value measured by one of the tags exceeds the alarm control value, an alarm is generated and the tag at the corresponding position on the process flow displayed on the screen is displayed with blinking, color change, etc. And inform the guards.

In order to generate an alarm for various tags in such a plant operation monitoring device, an alarm management value for determining how far from a normal process value the alarm should be generated for each tag must be set in advance. Must.

In addition, it is necessary to change the setting of the alarm management value according to the operation stage (for example, startup, steady operation, load change, shutdown, etc.) of the plant to be monitored. If this change is not made, a large number of unnecessary alarms will be generated at the same time, especially at startup, shutdown, and load change, which will put unnecessary burden on the supervisor.

Therefore, conventionally, in order to avoid the occurrence of such unnecessary alarms, a plurality of alarm management values are collectively set in the plant operation monitoring device according to the operation stage, and are called alarm suppression. If a function is provided, for example, if the operation stage is start-up or shutdown, alarm generation is prohibited for many tags, and alarm management values are set only for tags that require special attention.

[0006]

However, in order to operate such an alarm suppression function, it is necessary to register in advance an alarm management value suitable for the operation stage of the plant. In such a case, it is necessary to previously register alarm management values for each tag in advance, and the work has been enormous.

Further, since the registration of alarm management values is enormous, even if alarms are generated simultaneously from a large number of tags at the time of startup or shutdown without using the alarm suppression function, monitoring can be performed through the experience of a supervisor. It has been proposed to monitor only necessary important tags and ignore alarms of other tags.

The present invention has been made in view of such conventional problems, and provides an alarm management value setting device which can easily set and register alarm management values of a large number of tags in a plant operation monitoring device. The purpose is to do.

[0009]

According to a first aspect of the present invention, there is provided an alarm management value setting device comprising a plurality of tags included in a process unit of a monitoring target plant covered by a process flow graphically displayed on an operation monitoring display device. A tag management unit that manages a plurality of tags managed by the tag management unit, a process value registration unit that registers a process value of each of the plurality of tags, an operation stage designation unit that designates one of a plurality of operation stages of the monitored plant, Alarm pattern specifying means for specifying one of a plurality of types of alarm control value setting patterns and graphic display on the operation monitoring display
By specifying one of a plurality of tags displayed in the displayed process flow, the process value of the corresponding tag is called from the process value registration means, the operation stage is specified by the operation stage specification means, and the alarm pattern is specified. Means for setting an alarm management value based on the setting pattern of the alarm management value called by the alarm pattern selection means for the process value by designating the setting pattern of the alarm management value by the means, and specifying the operation stage by the operation stage designating means And alarm management value setting means for setting as an alarm management value of a designated tag belonging to.

In the alarm management value setting device according to the first aspect of the present invention, when setting and registering the alarm management value, the operation stage is designated by the operation stage designating means, and the setting pattern of the alarm management value is designated by the alarm pattern designating means. And a graphic on the operation monitoring display
Multiple tags displayed in the displayed process flow
Is specified by the alarm control value setting means, the process value of the corresponding tag is called from the process value registration means for the specified tag, and the process value is set based on the specified alarm control value setting pattern and this process value. To set the alarm management value as the alarm management value in the designated operation stage.

The thus set alarm management value of each tag for each operation stage is registered in the alarm management value registration means of the plant operation monitoring device, so that the alarm management value for each tag is provided for each operation stage in process flow units. Can be set and registered, and the technician's labor required for registering the alarm management value can be reduced.

According to a second aspect of the present invention, in the alarm management value setting device according to the first aspect of the present invention, the tag whose alarm management value has not been set by the alarm management value setting means among the plurality of tags managed by the tag management means. Is provided with default value setting means for collectively setting default values as alarm management values.

In the alarm management value setting device according to the second aspect of the present invention, the alarm management value is set only for the tags that need to be strictly monitored according to the operation stage, and the alarm management values are set for the remaining tags collectively. Can be set, and it is not necessary to set alarm management values for all the tags belonging to the process unit one by one, and the work of setting alarm management values can be further reduced.

According to a third aspect of the present invention, in the alarm management value setting device of the first or second aspect, any one of startup, load change, and shutdown is designated as the operation stage designated by the operation stage designation means.

In the alarm management value setting device according to the third aspect of the present invention, the operation of setting the alarm management value at the start-up, load change, and shutdown, which particularly require alarm suppression as the operation stage, can be easily performed.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a functional block diagram of one embodiment of the present invention. An information section 1 of a process flow screen of a system for actually monitoring plant operation and information of the process flow screen are set according to the present invention. A data conversion unit 2 for converting the information into information to be operated by the device, a registration / display interface unit 3 for displaying and outputting necessary information on a display device at the time of alarm management value registration work, and inputting operation information; A process value setting unit 4 for assuming, an alarm pattern selection unit 5 for selecting and specifying a setting pattern of an alarm management value, an operation stage selection unit 6 for selecting and specifying an operation stage, and a set alarm management value The alarm data storage unit 7 for storing data and the alarm management value data are transferred to a plant operation monitoring device that actually performs alarm management. And a download section 8 for.

The hardware configuration of the alarm management value setting device according to the present invention will be described with reference to FIG. In the process flow information section 1, a graphic source file 21 of the process flow of the monitoring target plant and information 22 of a tag group included in each process flow are registered. This utilizes existing data registered in the plant operation monitoring device in advance.

The conversion unit 2 comprises a conversion program.
The graphic source file 21 and the tag group information 22 are converted into data that can be used by the alarm management value setting device of the present invention. The registration / display interface unit 3 includes a registration window screen and a touch panel displayed on the display device,
It is composed of input operation means such as a mouse and a keyboard.

The process value setting section 4 is a section for registering the process values of various tags assuming the operation state of the plant. The trend data of the process value of each tag in the optimal state during the operation is fetched online from the plant operation monitoring device side, or the real-time process value data is fetched and registered.

An alarm pattern is registered in the alarm pattern selection section 5 in advance, and any one of them can be selected and designated. The alarm pattern is not particularly limited. For example, the following settings are possible.

1) The upper limit value PH and the lower limit value PL are ± 10% of the process value PV. 2) The upper limit value PH and the lower limit value PL are ± 2% of the process value PV.
0% and the change rate of the process value PV is within 50% 3) The upper limit value PH is 100%, the lower limit value PL is 0% and the change rate of the process value PV is within 100% 4) Prohibition of alarm generation and upper limit value PH Upper limit PHH, Lower limit PL
It is also possible to set a lower / lower limit value PLL below, or to set a deviation limit value or an upper / lower limit value of an operation amount.

The operation stages are registered in the operation stage selection section 6 in advance, and any one of them can be selected and designated. The operation stages include (1) start-up, (2) steady operation, (3) load change, and (4) shutdown.

Next, the hardware configuration of the alarm management value setting device and the actual plant operation monitoring device of the present invention will be described with reference to FIG. The alarm management value setting device of the present invention is realized by a software program registered in a general-purpose tool such as a personal computer. The alarm management value data created by the general-purpose tool 11 is stored in a communication line 12 such as a LAN. Directly to the storage device 14 of the plant operation monitoring device 13 through the data storage medium 15, or registered in the storage device 14 of the plant operation monitoring device 13 via the data storage medium 15, and further executes plant control on the plant operation monitoring device 13 side In this case, the data is transferred to the control unit 16 through the communication line 17 and registered.

Next, the operation of setting the alarm management value by the alarm management value setting device having the above configuration will be described with reference to FIGS.
It will be described based on. First, the conversion unit 2 reads the process flow information from the process flow information unit 1 and converts the data into a form that can be used in the system of the present invention (step S1 in the flowchart of FIG. 6). Registration window for plant 1
Display two process flow screens (step S
2). The conversion unit 2 converts the data of the program flow information and also converts the list data of a large number of tags included in each process flow, and registers / displays the interface data.
Pass to. The registration / display interface unit 3 displays the selected process flow screen 31 and simultaneously displays the alarm pattern selection button 32 and the operation stage selection button 3
3. The process value setting button 34 is displayed.

When the operation of selecting the operation stage selection button 33 is performed, the operation stage selection screen 41 is expanded and displayed as shown in FIG. 4, and the operation stage is selected therefrom (step S3). As an operation stage, FIG.
As shown in FIG. 5, options of (1) startup, (2) steady operation, (3) load change, and (4) shutdown are set.

The process value PV now referred to FIG.
Considering the fluctuation of the temperature (eg, the temperature of the fluid flowing through the piping), the PV is low immediately before the start-up, and the PV gradually increases by the start-up (1), and is controlled to a substantially constant target value in a steady state (2). If there is a load change that raises the target value, it further rises (3), and when shutting down, the PV gradually decreases (4). In the case of such fluctuations, it is necessary to change the alarm management value of each tag at the time of start-up, steady operation, load change, and shutdown, so set the alarm management value for each of these operation stages. It is necessary to select and specify. On the screen 31, startup (1) is selected and designated.

Subsequently, an alarm management value registration operation is started (step S4). In this alarm management value registration work, first, a tag for which an alarm management value needs to be set is specified on the process flow screen 31 (this specification operation is performed by touching a corresponding portion of the screen or clicking with a mouse, for example).
This is performed using a prepared pointing device). As a result, the tag pattern 44 is interrupted and displayed on the process flow screen 31.

Next, the process value setting button 34 is expanded to open the process value setting screen 43 to set which is to be used as the process value assuming the steady operation of the plant. This process value setting includes an option of inputting an ideal process value by key operation for each specified tag (PV key input), and an option of capturing real-time process value data online from the plant operation monitoring device ( HT data input), and an option (trend data input) for acquiring trend data of the process value of the corresponding tag in an optimal state during the operation of the plant online from the plant operation monitoring device side. Here, HT data input is selected and designated. The process value PV for the tag specified by this
Is displayed at a corresponding position of the tag pattern 44.

After the process value is set, the operation of expanding the alarm pattern selection button 32 is performed, and the pattern for setting the alarm management value for the process value of the specified tag is specified from the expansion screen 42. In the development screen 42 for selecting the alarm pattern, 1) the upper limit value PH and the lower limit value PL are set to ± 1 of the process value PV.
0% 2) The upper limit value PH and the lower limit value PL are ± 3 of the process value PV.
0% 3) Upper limit value PH is 100%, Lower limit value PL is 0% 4) 4 options of alarm prohibition are prepared. The type and number of options of the alarm pattern are not particularly limited.

Therefore, by selecting and operating one of the alarm pattern options, the upper limit value PH and the lower limit value P are set for the process value PV in accordance with the alarm pattern.
L is calculated and displayed at an appropriate position on the tag pattern screen 44.

Thus, the upper limit of one tag,
After setting the alarm management value such as the lower limit, the alarm management value is stored in the alarm data storage unit 7 (step S5).

The above-described alarm data setting / registration work is executed for all the tags that need to be monitored for each operation stage among the many tags included in the process flow screen 31 (step S6).

Here, when an unset tag display button 45 prepared on the process flow screen 31 is operated to see which tag has not been set, an unset tag list screen 46 is expanded and displayed. Therefore, it is possible to check whether there is any omission in the tag for which the setting of the alarm management value is required to be registered in the operation stage currently under registration.

When the setting of the alarm management value is completed for all the tags that need to be set and registered in the above procedure, the setting of the alarm management value is automatically performed by designating the completion button 47. For the missing tag, a default value set in advance is set. Note that this default value differs depending on the operation stage.

For example, at the time of start-up or shutdown, for a tag for which an alarm management value has not been set and registered, an alarm generation inhibition (MONI-OFF) is set to avoid unnecessary generation of an alarm.

For a tag for which an alarm management value is not set and registered during normal operation, a default value is set as an alarm management value so that ± several% is set with respect to the process value PV. Settings that do not require changes to alarm management values other than tags can be made.

When the operation of setting and registering the alarm management values for all the tags required for one operation stage is completed, the operation of setting and registering the alarm management values for all the tags required for the other operation stages is similarly repeated. (Step S7).

When the operation of registering the alarm management value is completed, the download unit 8 downloads the alarm data stored in the alarm data storage unit 7 to the plant operation monitoring device. The operation procedure of this download will be described. As shown in FIG. 7, the process flow 51 of the target plant is displayed, and the operation stage change key 52 assigned to the soft key of the process flow 51 is displayed.
To expand the driving stage window 53,
Select the operation stage to be changed and give a download execution command. When the alarm management value setting device 11 and the plant operation monitoring device 13 are directly connected by the communication line 12, the alarm management value data of the corresponding operation stage is stored in the storage device of the plant operation monitoring device 15 through the communication line 12. 14. When downloading to a magnetic storage medium 15 such as a floppy disk, the magnetic storage medium 15 is transferred to the plant operation monitoring device 13.
The data is transferred by reading the data.

It should be noted that the present invention is not limited to the above-described embodiment, and the type and number of operation stages and alarm patterns can be arbitrarily set according to the actual plant characteristics.

[0040]

As described above, according to the first aspect of the present invention,
When setting and registering the alarm control value, the operation stage is specified by the operation stage specifying means, the alarm control value setting pattern is specified by the alarm pattern specifying means, and the tag is specified by the alarm control value setting means. The process value registration means calls the process value of the corresponding tag for the tag, and sets the alarm management value as the alarm management value in the specified operation stage based on the specified alarm management value setting pattern and this process value. As a result, the required alarm management values of the tags can be set and registered in process flow units and for each operation stage.
The labor of a technician required for the work of registering the alarm management value can be reduced.

According to the second aspect of the present invention, an alarm management value is set only for tags that need to be monitored according to the operation stage, and the alarm management values are collectively set to the default value or the alarm inhibition for the remaining tags. The setting procedure can be taken, and it is not necessary to set the alarm management value for each of the tags included in the process flow one by one, and the work of setting the alarm management value can be further reduced.

According to the third aspect of the present invention, it is possible to easily set an alarm management value in a start-up, a load change, and a shutdown, which particularly require alarm suppression as an operation stage.

[Brief description of the drawings]

FIG. 1 is a functional block diagram of one embodiment of the present invention.

FIG. 2 is a circuit block diagram showing a functional configuration of the embodiment.

FIG. 3 is a block diagram showing a system configuration of an alarm management value setting device and a plant operation monitoring device according to the embodiment.

FIG. 4 is an explanatory diagram showing an alarm management value setting operation of the embodiment.

FIG. 5 is an explanatory diagram showing a case of an operation stage used in the embodiment.

FIG. 6 is a flowchart showing an alarm management value setting procedure according to the embodiment.

FIG. 7 is an explanatory diagram showing a procedure for downloading alarm management value data according to the embodiment.

[Explanation of symbols]

 1 Process flow information section 2 Data conversion section 3 Registration / display interface section 4 Process value setting section 5 Alarm pattern selection section 6 Operation stage selection section 7 Alarm data storage section 8 Download section 31 Process flow screen 32 Alarm pattern selection button 33 Operation Stage selection button 34 Process value setting button 41 Operation stage selection screen 42 Alarm pattern selection screen 43 Process value setting screen 44 Tag pattern screen 45 Unset tag display button 46 Unset tag list 47 Complete button

Claims (3)

(57) [Claims] 1. A tag management means for managing a plurality of tags included in a process unit of a monitoring target plant covered by a process flow graphically displayed on an operation monitoring display device, and a plurality of tags managed by the tag management means. A process value registration unit for registering a process value of each tag, an operation stage designating unit for designating one of a plurality of operation stages of the monitoring target plant, and designating one of a plurality of types of setting patterns of an alarm management value Means for designating an alarm pattern and a program graphically displayed on the operation monitoring display device.
A process value of the corresponding tag is called from the process value registering means by designating any of a plurality of tags displayed in the process flow, an operating stage is designated by the operating stage designating means, and the alarm pattern designating means is designated. An alarm management value is set based on the alarm management value setting pattern called by the alarm pattern selection means for the process value by specifying the alarm management value setting pattern, and the operation stage specification means specifies the alarm management value. An alarm management value setting device comprising: alarm management value setting means for setting as an alarm management value of the specified tag belonging to an operation stage. 2. A default value setting for collectively setting a default value as an alarm management value for tags for which an alarm management value has not been set by the alarm management value setting means among a plurality of tags managed by the tag management means. 2. The alarm management value setting device according to claim 1, further comprising means. 3. The alarm management value setting device according to claim 1, wherein one of start-up, load change, and shutdown is designated as the operation stage designated by said operation stage designation means.