JP3512494B2 - Plant operation support device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plant operation support device for monitoring the presence or absence of an abnormality in plant equipment and, when an abnormality is detected, assisting in easily identifying the situation and cause of the abnormality.

[0002]

2. Description of the Related Art Conventionally, in order to maintain the soundness of a plant, a plant monitoring system for detecting a failure / operation abnormality of plant equipment has been put into practical use.

In this plant monitoring system, sensors are attached to the main equipment of the plant, the signal output lines of these sensors are connected to a monitoring device installed at the plant site, and the signal output lines of this monitoring device are controlled in the plant control room. It was generally connected to a panel or control console.

In the above-mentioned conventional plant monitoring system, the output signal of each sensor is monitored by the monitoring device installed in the field, and when there is an abnormality in the output signal of the sensor, the monitoring device controls the control panel and control console in the plant control room. The alarm signal is output to.

The plant operator who has been notified of the abnormality of the plant by the alarm signal of the above-mentioned monitoring device cannot go up to the vicinity of the plant equipment because he / she cannot concretely grasp the situation and cause of the abnormality of the plant equipment, so that the details of the equipment condition can be seen. It was normal to inspect.

The detailed inspection of the equipment condition is carried out based on the experience of the inspector by measuring the data that the inspector thinks is related to the identification of the cause of the abnormality and comparing the measured data with the specific reference value of each data. I made a comprehensive judgment by taking in sensory information.

When the inspector cannot make a judgment, he relied on the situation judgment based on the past experience results of a more experienced technician.

In contrast to the above-mentioned plant monitoring system and method, in a plant control system having a large-scale computer resource, the computer stores in advance the diagnostic rules of a skilled engineer, and all process data necessary for facility diagnosis is stored. A system for importing and performing plant equipment diagnosis has been proposed.

[0009]

However, in the conventional plant monitoring system in which only the alarm is displayed on the control panel / control console by the plant monitoring device which detects the abnormality in the sensor detection value, the fact that there is an abnormality or the abnormality Although it was possible to know a simple event of the above, it was not possible to fully understand the situation and cause of the abnormality in the plant control room.

In this case, it is necessary to secure personnel for on-site inspection and to prepare equipment, but there is a problem that it takes time for preparation.

In addition, even if a detailed inspection is performed, it is often impossible to know the proper equipment for the detailed inspection unless the user goes to the site, and it is a wasteful time to reciprocate between the site and the plant control room. It often took a lot of time.

[0012] Further, the technician who actually carries out the detailed inspection of the site is not always a skilled technician, and the work is delayed because he / she does not know the investigation method, and the cause cannot be identified by one detailed inspection. there were.

This is particularly affected when the plant control room and the plant equipment site are far apart.

For example, in an unmanned operation plant such as a hydroelectric power plant, it is usual that the plant control room and the site of the plant equipment are separated by several tens of kilometers. In such a plant, reciprocating the above distance for the purpose of site inspection and identification of the cause of abnormality is a heavy burden in terms of time and labor.

Further, it takes time to grasp the situation regarding the abnormality of the plant equipment and to specify the cause of the abnormality in such an emergency situation in which the final situation judgment of the operator in the plant control room is required immediately. It was also the cause of a serious accident due to the delay.

On the other hand, a facility diagnosis system that stores the facility diagnosis rule of a skilled engineer in an electronic computer and takes in the process data necessary for the facility diagnosis to perform the facility diagnosis of the plant is possible in order to accurately perform the facility diagnosis. It is necessary to capture relevant process data.

However, in the existing aged plant,
It was virtually impossible to provide a sensor for capturing process data that could accurately grasp the status of all equipment.

Further, this system usually requires a large amount of computer resources, and special knowledge by a knowledge engineer is also required for teaching the knowledge database.

Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art, and when an abnormality occurs in plant equipment,
Provide a plant operation support device that guides the detailed inspection work in a direction that can easily identify the cause of the abnormality when informing the operator by specifying at least some extent of the cause of the abnormality and actually performing a detailed inspection of the site. It is in.

[0020]

A plant operation support device according to claim 1 of the present application comprises a plant monitoring device installed near a plant device, and a plant control room side display / input device installed in a plant control room. A plant monitoring device and a transmission line for data transmission laid between the plant control room side display / input device, wherein the plant monitoring device is
Process input means for periodically collecting process data of a plant from a sensor attached to plant equipment,
Signal monitoring means for monitoring the process data taken in by the process input means and outputting signal monitoring data for facility diagnosis and abnormality display when an abnormality is detected; and when the signal monitoring means detects an abnormality , Equipment diagnostic means for inputting the signal monitoring data to perform equipment diagnosis, and inputting the diagnostic result of the equipment diagnostic means and the signal monitoring data to extract display data effective for notifying an operator of an abnormality Display information extraction means, and display data extracted by the display information extraction means on the plant control room side /
The plant site side transmitting means for transmitting to the input device, the display data extracted by the display information extracting means, and the detailed inspection result obtained in the plant control room are displayed on the display / input section installed near the plant equipment. In addition, the plant site side display / output of the detailed inspection result of the plant site input through the display / input unit to the facility diagnosis means /
Input means, the plant control room side display / input device receives the display data transmitted from the plant site side transmission means, and the plant control room side transmission means receives the display data. A plant for displaying the displayed data on a display / input unit installed in the plant control room, and outputting the detailed inspection result of the plant control room input via the display / input unit to the plant control room side transmission means. And a control room side display / input means.

The plant operation support apparatus according to claim 2 of the present application is the plant operation support apparatus according to claim 1, wherein the plant control room side display / input means displays / displays a causal relationship tree diagram showing the process of occurrence of an abnormality. It is characterized in that it is displayed on the input unit.

A plant operation support apparatus according to claim 3 of the present application is the plant operation support apparatus according to claim 1, wherein the display information extracting means displays a cross-section data list including sensor measurement values at the time of occurrence of an abnormality and corresponding reference values. It is characterized by extracting.

A plant operation support apparatus according to claim 4 of the present application is the plant operation support apparatus according to any one of claims 1 to 3, wherein the facility diagnosis means displays process data and detailed inspection results of the plant. Based on the item-by-item judgment means for judging abnormality or normality for each item by comparing with a predetermined reference value, and the judgment item status data by the item-by-item judgment means, the established state of an event that may cause an abnormality of the plant Is determined by the determination logic for each event, and the sum of the coefficients attached to the established determination items is determined based on the currently known data for a plurality of determination items that are the requirements for establishing the event. It is characterized by comprising an event-by-event satisfaction degree confirmation means for confirming the event satisfaction degree according to the size of.

[0024]

According to the plant operation support apparatus of the first aspect of the present invention, the process input means periodically takes in the process data of the plant from the sensor provided in the plant equipment, and the taken process data is monitored by the signal monitoring means. To do.

The signal monitoring means compares the process data with a predetermined reference value, and when the deviation from the reference value is detected, it is determined that an abnormality has occurred in the plant, and signal monitoring data for equipment diagnosis and abnormality display are respectively provided to the equipment diagnosis means. Is output to the display information extraction means.

The equipment diagnosing means inputs the signal monitoring data and identifies or narrows down the event causing the abnormality based on the causal relationship tree diagram of the abnormality cause created based on the knowledge and experience of the skilled engineer.

The display information extraction means extracts display data effective for accurately notifying an operator of an abnormal event from the signal monitoring data output by the signal monitoring means and the equipment diagnosis result output by the equipment diagnosing means.

The plant site side transmission means inputs the display data and transmits it to the plant control room side transmission means of the plant control room side display / input device.

The plant site side display / input means inputs the display information output by the display information extraction means and the detailed inspection result obtained in the plant control room, and displays it on the display / input section. Further, it is possible to output the result of the detailed site inspection input via the display / input unit to the equipment diagnosis means to execute the equipment diagnosis. Also, the plant control room side display / input means feeds back the inspection result to the plant monitoring device via the plant control room side transmission means when a detailed inspection is carried out in the plant control room, so that the cause of the operator on site can be checked. The investigation can be facilitated.

As a result, the operator can refer to the causative event of the plant abnormality analyzed by the facility diagnosing means as well as the mere alarm of the plant abnormality, and display the signal monitoring data to cause the abnormality by himself / herself. Can be judged. Further, the operator can grasp the cause of the abnormality analyzed by the facility diagnosis means, the necessary detailed inspection and the result thereof, regardless of whether it is at the plant site or in the control room, and can quickly deal with the abnormal situation. Further, the cause of the plant abnormality can be efficiently investigated by cooperating in the plant control room and the plant site and repeating the detailed inspection, the feedback of the result and the facility diagnosis. Furthermore, the detailed inspection items are ranked according to their degree of difficulty, simple detailed inspections are performed, and the detailed inspection results are used as new information to perform equipment diagnosis, thereby eliminating all detailed inspections. In many cases, the cause of the abnormality can be identified only by a simple detailed inspection. As a result, the labor and time for detailed inspection can be reduced, and plant operation including detailed inspection can be supported.

In the plant operation support apparatus according to claim 2 of the present application, the plant control room side display / input means displays / displays a causal relationship tree diagram that clearly shows the process of occurrence of an abnormality.
Display in the input section. As a result, the operator can easily understand the result of the facility diagnosis by following the event that is likely to be established.

[0032]

[0033]

In the plant operation support apparatus according to claim 3 of the present application, the display information extracting means extracts a section data list including sensor measurement values at the time of occurrence of an abnormality and corresponding reference values. Thereby, the operator can confirm the list of plant data including the instantaneous sensor measurement value at the time when the abnormality occurs and the corresponding reference value.

[0035]

[0036]

[0037]

[0038]

A plant operation support apparatus according to claim 4 of the present application comprises the equipment diagnosis means of the plant operation support apparatus according to claims 1 to 3, item-based determination means, event-based establishment determination means, and event-based establishment degree confirmation means. It is a thing.

The event causing an abnormality is estimated by the establishment of a plurality of subdivided events, and these events are measured values such as pressure and temperature, and sensory information such as color and odor. Including etc.

The item-by-item judgment means inputs plant process data or the result of detailed inspection, compares the measured values, sensory information, and other events (hereinafter referred to as judgment items) with predetermined reference values. Determine normal or abnormal.

The event-based establishment determination means inputs the determination results of the item-based determination means, and determines the establishment status of the cause event of the plant abnormality by the determination logic based on the determination results of these items.

The event-by-event satisfaction level confirmation means further makes a judgment on the basis of the currently known data regarding a plurality of judgment items that are the requirements for the occurrence of the event, and the magnitude of the sum of the coefficients attached to the established judgment items. Confirm the degree of event establishment by.

The item-based determination means, the event-based establishment determination means, and the event-based establishment degree confirmation means can objectively determine the event that is the cause of the abnormality. Even if there is a small amount of data to be determined, the event-based establishment degree confirmation is performed. By the means, the cause event of the abnormality can be estimated. That is, since it is possible to estimate the establishment of an abnormal event from the currently known information by the event-by-event establishment confirmation means, even if information cannot be obtained for all judgment items, the cause event of the abnormality is estimated. It is possible to grasp the cause and situation of abnormality at an early stage of information collection. Especially not only plant process data,
If the cause of the abnormality is investigated step by step based on the detailed inspection result data carried out in the plant control room or plant site, even if the necessary data is insufficient, the abnormality will be detected based on the obtained data. The cause of occurrence can be narrowed down, and a plant operation support device that effectively supports plant operation can be obtained. In addition, all of the above plant operation support devices combine all the conventional plants by combining the equipment diagnosis by the FTA table created based on the experience and knowledge of skilled engineers with the cause of abnormality and the detailed inspection by the operator. Compared with a large-scale device that captures data and diagnoses equipment, it is possible to reliably determine the cause of an abnormality with less computer resources.

[0045]

Embodiments of the plant operation support system according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows the configuration of an embodiment of the plant operation support device of the present invention.

In FIG. 1, a plant operation support device 1
Is a plant monitoring device 2 installed near the plant equipment (hereinafter referred to as the site), a plant control room side display / input device 3 installed in the plant control room, the plant monitoring device 2 and a plant control room side display. / A transmission line 4 connecting the input device 3 to the input device 3.

The plant monitoring device 2 inputs the detection values of the sensors provided in each equipment of the plant equipment in a short cycle,
When the process input means 5 for outputting data to the process data file F1 and the data stored in the process data file F1 are input and compared with a predetermined reference value, if there is an abnormality, an abnormal condition is displayed and an abnormal cause is displayed. Signal monitoring means 6 for outputting data relating to the judgment of the signal monitoring data file F2, and equipment for inputting the data of the signal monitoring data file F2 to perform equipment diagnosis and outputting the equipment diagnosis result to the equipment diagnosis result file F3. Display data to be notified to the operator is extracted from the data of the diagnosis means 7 and the equipment diagnosis result file F3, and the plant side display data file F
4 and the display information extracting means 8 for outputting the data to the display data file F4 on the plant site side,
And a plant site side transmission means 9 for outputting to the plant control room via the.

Although not shown in FIG. 1, the plant monitoring device 2 has a process data file F1, a signal monitoring data file F2, and an equipment diagnosis result file F3.
And a display data file F4 on the plant site side and a storage device for storing the diagnostic rules of the facility diagnostic means 7.

The plant control room side display / input device 3 receives the display data transmitted by the plant site side transmission means 9 of the plant monitoring device 2 and outputs it to the plant control room side display data file F5. 10 and
It has a plant control room side display means 12 for inputting the data of the plant control room side display data file F5 and displaying it on the screen of the display unit 11.

The plant control room side display / input device 3
Is also connected to a storage device (not shown) that stores the plant control room side display data file F5.

Next, the operation of the plant operation support system 1 of this embodiment will be described below by taking a hydroelectric power plant as an example.

In the hydroelectric power plant, the plant monitoring device 2 of the plant operation support device 1 of this embodiment is usually installed near the hydroelectric power generation facility near the dam in the mountains. On the other hand, the plant control room side display / input device 3 is installed in the plant control room at a place distant from the hydraulic power generation facility. Plant monitoring device 2 and plant control room side display /
A transmission line 4 is laid between the input devices 3 over a long distance.

Process input means 5 of the plant monitoring device 2
Stores the detection value of the sensor attached to each device of the hydroelectric power plant at high speed and periodically and saves it as process data in the process data file F1.

As process data, preferably temperature data such as bearing temperature of rotating equipment and temperature in oil tank, pressure values such as oil film pressure and water supply pressure, and flow rate such as water supply amount, which are important in judging the operating state of the plant. Values, vibration values such as shaft vibration, etc. are collected.

The cycle of collecting process data is
Optimal collection depending on the type of process data, such as 1 second to 10 seconds cycle for relatively slow changes such as temperature data, water level, and flow rate, and 1 millisecond cycle for fast changes such as vibration values. It is preferable to set the cycle.

Since the process data file F1 of the plant monitoring device 2 is frequently accessed by the process input means 5 and the signal monitoring means 6, the process data file F1 should be stored in the main storage device having a short access time.

Since the process data file F1 has a different collection period depending on the type of process data, it has a plurality of process data storage areas for each collection period.

FIG. 2 shows the structure of the process data file F1. As shown in the figure, the process data file F1 of this embodiment has a data storage area 1 of 1 ms cycle.
It has a data storage area 14 of 3, 100 ms cycle, a data storage area 15 of 1 s cycle, a data storage area 16 of 10 s cycle, and the like.

In the data storage area for each cycle of the process data file F1, the process data collected in that cycle is stored. For example, the data storage area 13 having a cycle of 1 ms stores process data 1, ...

Further, for each process data 1, ..., M, process data (analog signal (1
ms), ..., Analog signal (1 min)) for storing a data storage area which is filled in one minute.

With the above arrangement, the process input means 5 of this embodiment takes in each process data at each predetermined cycle, and the data storage area of the process data file F1 becomes full and cannot be stored any more. In this case, that is, in this embodiment, the signal monitoring means 6 is activated every 1 minute.

The signal monitoring means 6 refers to the process data of the process data file F1 and monitors whether or not the process data deviates from a predetermined reference value. The monitoring by the signal monitoring means 6 not only simply compares the value of the process data with a predetermined reference value, but also calculates and monitors the standard deviation, the rate of change and the like.

When the process data deviates from the reference value,
The signal monitoring means 6 processes the data and outputs data for facility diagnosis and abnormal condition display, which will be described later, to the signal monitoring data file F.
Output to 2. At the same time, a signal indicating that an abnormality has been detected is sent to the equipment diagnosis means 7 to activate it.

FIG. 3 shows the structure of the signal monitoring data file F2. In the signal monitoring data file F2,
Areas 17 and 1 for unprocessed process data (raw data)
Area 18 for 1 second average value of 00 ms period data, 1
Area 19 for standard deviation of 00 ms period data for 1 second,
An area 20 for 1 s cycle raw data, an area 21 for 1 s cycle change rate, and an area 22 for abnormality occurrence information are secured.

Of these, the raw data area 17 is an area for storing measured values (analog signal (1), ..., Analog signal (n)) of process data for n minutes before and after the occurrence of the abnormality. Contains. Further, the area 22 for abnormality occurrence information is an area 22 for storing a list of process data items (abnormality item list) that have deviated from the reference value at the time of abnormality detection.
a, Reference value used for abnormality determination (abnormality determination threshold value)
And an area 22b for storing an instantaneous value (abnormal instantaneous value) of each process data when an abnormality is detected.
2c is included.

Next, the equipment diagnosis means 7 activated by the abnormality detection signal of the signal monitoring means 6 will be described. The equipment diagnosis means 7 performs equipment diagnosis to identify or narrow down the cause of abnormality. The facility diagnostic means 7 stores in advance the knowledge and experience of a skilled engineer who has been operating and maintaining the plant for many years in the form of a diagnostic rule, and the signal monitoring data file F according to the diagnostic rule.
Equipment diagnosis is performed based on the contents of 2.

The diagnostic rules of the plant equipment are expressed as an FTA table (Fault Tree Analysis: causal relationship tree diagram). FIG. 4 exemplifies the FTA table of this diagnostic rule. In the FTA table of FIG. 4, the items surrounded by a rectangular frame are called “events”, and each is a simple expression of an abnormal phenomenon or cause. An event (excessive vibration of the turbine shaft in this example) 23 located at the left end of FIG. 4 is an abnormal phenomenon detected by the signal monitoring means 6. This event 23
Each of the events on the right side of FIG. 3 is an event having some relation to the establishment of the event 23 on the left end, and is subdivided toward the right side, and the target device and the cause of the abnormality are specifically narrowed down.

The equipment diagnosis is performed based on the FTA table, and the equipment diagnosis result and the like by the equipment diagnosis means 7 are stored in the equipment diagnosis result file F3.

FIG. 5 shows the structure of the equipment diagnosis result file F3. As shown in the figure, the facility diagnosis result file F3 includes a diagnosis execution date 24 and a diagnosis execution time 25.
And an FTA table event item corresponding flag 26 showing the establishment status (possibility of establishment) of each event in the FTA table, a diagnosis history 27 explaining the circumstances leading to the diagnosis result, and a diagnosis result 28,
The measure 29 for the diagnosis result is stored.

In the FTA table event item correspondence flag 26, the possibility of establishment of each event in the FTA table is 5 stages of establishment: 0, high possibility: 1, low possibility: 2, non-establishment 3, and unknown 4. It is stored in the numeric format of. On the other hand, the diagnosis history 27, the diagnosis result 28, and the measure 29 for the diagnosis result are stored in the form of a document.

The equipment diagnosing means 7 activates the display information extracting means 8 after performing the above equipment diagnosis. The display information extracting means 8 reads the signal monitoring data file F2 output by the signal monitoring means 6 and the equipment diagnosis result file F3 output by the equipment diagnosing means 7, respectively, and is effective for the operator to determine the status and cause of the abnormality. This information is edited and output to the plant site side display data file F4.

FIG. 6 shows the structure of the plant site display data file F4. In the display data file F4 on the plant site side, diagnosis execution date 30 and time 31
The equipment diagnosis result 32 obtained from the equipment diagnosis result file F3 and the signal monitoring data 33 obtained from the signal monitoring data file F2 are stored.

Display data file F on the plant site side
4 is created, the plant site side transmission means 9 transmits the contents to the plant control room side transmission means 10 of the plant control room side display / input device 3 via the transmission path 4.

The plant control room side transmission means 10 receives the signal from the plant site side transmission means 9, outputs the contents to the plant control room side display data file F5, and detects that an abnormality is detected at the plant site. Is notified to the plant control room side display means 12 to be activated.

When the plant control room side display means 12 receives the notification of the plant abnormality detection from the plant control room side transmission means 10, it first displays an alarm as shown in FIG. 7 on the display section 11. When the operator who confirms this alarm requests further detailed information on the plant abnormality, the plant control room side display means 12 extracts the necessary information from the plant control room side display data file F5 and displays it on the display unit 11. .

FIG. 8 shows an example of a display screen of the plant abnormality data output to the display section 11.

In the screen of the plant abnormality data illustrated in FIG. 8, a diagnostic cause column 34 indicating the date and time of the abnormality occurrence and the abnormality detection item, and a facility diagnostic information column 35 indicating the diagnosis result, countermeasures, progress, etc. And a section 36 of a cross-section data list when an abnormality is detected, such as a sensor measurement value or a reference value at the time when the abnormality occurs.

As a result, the operator can confirm the date and time of occurrence of the abnormality and the abnormality detection item of the equipment diagnosis, and
By referring to the equipment diagnosis result by the equipment diagnosis means 7, progress, countermeasures, and the like, it is possible to confirm a list of instantaneous plant data at the time when the abnormality occurs.

In this case, the plant control room side display means 12
Causes the display unit 11 to display various necessary data from the plant control room side display data file F5 in response to a request input via an input device (not shown). The information extracted from the display data file F5 on the plant control room side includes an FTA table in which the history of the occurrence of an abnormality can be seen in an easy-to-understand manner, and the status of each plant data at the time of the occurrence of the abnormality in a trend graph format.

FIG. 9 exemplifies an FTA table screen on which the history of the above-mentioned abnormality occurrence can be seen in an easy-to-understand manner.

The FTA table in FIG. 9 has a color-coded column 37 for the status of establishment of each event (five stages of possibility of establishment). Each event in the FTA table has a color-coded column 37 of this establishment status.
The colors are classified according to the status of their establishment.
As a result, the operator can easily understand the result of the facility diagnosis by following the event that is likely to be established.

FIG. 10 shows a display example of a trend graph of data related to plant abnormality. The trend graph 38 displays data for n minutes before and after the abnormality detection time 39 as a center in time series, and also displays an abnormality determination threshold value 40a and a sampling period 40b.

As a result, the operator can judge the correctness of the diagnosis result by referring not only to the situation at the time of occurrence of an abnormality but also to the transition of the plant state before and after that.

Further, the plant control room side display data file F5 also stores information such as equipment diagnosis results at the time of detecting an abnormality that occurred in the past, an FTA table, and a trend graph of plant data. Means 1
2 can provide such information in response to a request and can be used for the operator's judgment.

According to the plant operation support device 1 of the present embodiment, which provides various information relating to the above-mentioned plant abnormality, when the abnormality of the plant equipment is detected, it is narrowed down by the situation of the plant data at the time of the abnormality detection and the equipment diagnosis. Since the cause of the abnormality that has occurred can be grasped in the plant control room,
The operator can check the situation at the time of abnormality detection without going to the plant site located far away from the plant control room, and can improve the efficiency of work for dealing with the abnormality.

In the above description, a hydroelectric power plant is taken as an example, but the plant operation support device of this embodiment can be applied to a general industrial plant. In this case, the operation status of the plant can be confirmed at various places by installing the display unit not only in the plant control room but also in other departments such as the head office and branch offices.

Next, another embodiment of the plant operation support system of the invention will be described below.

FIG. 11 shows the configuration of another embodiment of the plant operation support system of the present invention. Since this plant operation support apparatus is obtained by adding some components to the plant operation support apparatus of FIG. 1, parts common to those of the plant operation support apparatus of FIG.

The plant operation support system 41 of this embodiment is
It comprises a plant monitoring device 42 installed at a plant site, a plant control room side display / input device 3 installed in a plant control room, and a transmission line 4.

The plant monitoring device 42 of the present apparatus includes a detailed inspection item searching means 43 in addition to the plant monitoring device 2 of FIG.
And a detailed inspection item list file F6 and a detailed inspection request file F7. These additional components are
In FIG. 11, it is surrounded by a broken line.

The detailed inspection item list file F6 stores the inspection contents to be executed by the inspector in the plant control room or the plant site. The detailed inspection item searching means 43, when activated by the equipment diagnosing means 7, reads the contents of the detailed inspection item list file F6 together with the equipment diagnosis result file F3, searches for an item requiring a detailed inspection, and requests a detailed inspection. Output to file F7. Further, the detailed inspection item searching means 43 outputs the information indicating the completion of the detailed item searching to the display information extracting means 8 at the same time as outputting to the detailed inspection request file F7, and activates the display information extracting means 8. The display information extraction means 8 uses the signal monitoring data file F
2 and the equipment diagnosis result file F3 and the detailed inspection request file F7 are input, the display information including the information of the detailed inspection items is extracted, and the plant site side display data file F4 is extracted.
Output to.

The plant monitoring apparatus 42 of this embodiment is similar to the plant operation support apparatus 1 of FIG. 1 up to the processing of the equipment diagnosis means 7, but after the equipment diagnosis is completed, the detailed inspection item search means 43 first By reading the equipment diagnosis result file F3, it is possible to ascertain to what extent the equipment diagnosis means 7 has been able to identify the cause of the abnormality and which equipment or equipment is presumed to have the abnormality occurrence factor.

Next, the detailed inspection item searching means 43 selects the plant from the detailed inspection item list file F6 so that the inspector can grasp beforehand the inspection contents to be carried out in the plant control room or the plant site. Search for inspection items based on the operating status and the status of abnormalities.

The inspection item retrieved by the detailed inspection item retrieval means 43 is output to the detailed inspection request file F7 together with related information.

FIG. 12 shows the detailed inspection item list file F6.
Shows the configuration of. Detailed inspection item list file F6
Has an area 44 for storing the event and the id of the inspection item in association with each other, and an area 45 for storing the id of each inspection item and detailed information.

In order to obtain information regarding inspection items using this detailed inspection item list file F6, an abnormal event is searched for from the area 44, the id group of related inspection items is acquired from the event, and then these ids are obtained. Through this, detailed information 46 of each inspection item is obtained.

The detailed information 46 of each inspection item includes the id, the item name, the installation location of the equipment, the difficulty level of the inspection 47, the method of performing the inspection, the purpose of the inspection, and the equipment necessary for the inspection (not shown). Specific information is stored. As a result, operators can prepare necessary inspection tools before going to the plant site and obtain preliminary knowledge for detailed inspections, and make up for the lack of knowledge and experience of operators to perform detailed inspection work efficiently. Can be made.

Further, detailed information 46 of the inspection items in FIG.
Although not shown in the table, check items such as reading the pressure value of the meter on the control panel at the plant site,
There are also sensory inspection items such as confirmation of sound, smell and dirt.

Regarding the detailed inspection items on site that rely on the five senses of the inspector, the detailed information 46 of the inspection items is stored in the form of a sentence in which the survey points and the judgment criteria are easy to understand.

The degree of difficulty 47 of the detailed information 46 of the inspection item in FIG. 12 is ranked in consideration of the degree of labor required for inspection and the operating state of the main engine, and the display of each meter on the control panel. From simple things such as confirming to, it is difficult to check the status of the target equipment without disassembling and checking the main machine.

This difficulty level 47 plays an important role in facilitating the detailed inspection of the site. This will be described below.

Suppose that the degree of difficulty 47 of the inspection item of the detailed inspection is 4
When divided into two levels, the following can be considered. [Level A] = inspection can be performed in the plant control room [Level B] = inspection can be performed simply by visiting the plant site regardless of the operating state of the plant [Level C] = plant operation stopped The inspection can be carried out while the level is in [Level D] = the main engine of the plant can be disassembled. In this case, the difficulty level of the detailed inspection becomes higher from level A to level D.

In the plant operation support system 41 of this embodiment, the inspector refers to the degree of difficulty of each inspection item and refers to the level A
Check items with a mark, that is, check items with a low degree of difficulty, in detail.

As described above, by performing the simple detailed site inspection, it is often possible to specify the cause of the abnormality in the middle of the detailed inspection work without performing all the inspection items. In this case, since the remaining detailed inspection can be omitted, the detailed inspection work can be simplified.

When all the detailed inspection items relating to the abnormal event have been made, these detailed inspection items are output to the detailed inspection request file F7 by the detailed inspection item searching means 43, and at the same time, the display information extracting means 8 is activated.

The display information extracting means 8 reads out necessary signal monitoring data, equipment diagnostic data and detailed inspection data from the signal monitoring data file F2, the equipment diagnostic result file F3 and the detailed inspection request file F7, respectively. The contents are output to the plant site side display data file F4.

Since the subsequent processing is the same as that of the plant operation support system 1 of FIG. 1, its explanation is omitted.

However, in addition to the information displayed on the display unit 11 of the plant operation support device 1 of FIG. 1, the information displayed on the display unit 11 of the plant operation support device 41 of this embodiment should be implemented by an inspector. It contains a list of on-site detailed inspection items and detailed contents of each detailed inspection item.

FIG. 13 exemplifies a screen of detailed inspection information displayed on the display unit 11 of the plant operation support system 41 of this embodiment.

In FIG. 13, a list 48 of detailed inspection items necessary for specifying the cause of the abnormal event is displayed on the left side of the screen. On the right side of the detailed inspection item list 48, inspection content buttons 49 for requesting detailed information on each inspection item are displayed.

Any inspection item in the detailed inspection item list 48,
For example, if the inspection content button 49 is operated while the "sand removal valve status" is selected, the installation location of the equipment and the inspection difficulty level of the "sand removal valve status" as shown in FIG. , The inspection method, the purpose of inspection, and tools (not shown) necessary for the inspection are displayed on the sub screen.

Since the operator can confirm these displays in the plant control room, the operator can check detailed inspection items to be carried out for investigating the cause of the abnormality, specific inspection points, inspection methods, reference values, etc. Know points in advance.
As a result, it is possible to save the waste of investigating the cause of the abnormality, the personnel necessary for the detailed inspection, the equipment to be prepared, etc. at the plant site several tens of kilometers away, and to improve the efficiency of the inspection work. Further, the inspection work can be carried out smoothly even by an inexperienced inspector.

Further, by outputting the detailed inspection items searched by the detailed inspection item searching means 43 and the information related to each inspection item as a document, it can be utilized as a work instruction for the inspector.

Next, still another embodiment of the plant operation support system of the invention will be described below.

FIG. 15 shows the construction of a plant operation support system according to still another embodiment of the present invention.

Since this plant operation support device is obtained by adding some components to the plant operation support device of FIG. 11, parts common to those of the plant operation support device 41 of FIG. And the description is omitted.

The plant operation support device 51 of this embodiment is
It comprises a plant monitoring device 52 installed at a plant site, a plant control room side display / input device 53 installed in a plant control room, and a transmission line 4.

The plant monitoring apparatus 52 of this apparatus is shown in FIG.
In addition to the plant monitoring device 42 of
An input means 54, a display / input section 55, and a plant site side detailed inspection result file F8 are provided.

Further, the display / input device 5 on the plant control room side
3 is a plant control room side display / input means 56, which is a component different from the detailed inspection item search means 43 of FIG.
It has a display / input unit 57 and a plant control room side detailed inspection result file F9.

The above-mentioned additional components are shown surrounded by broken lines in FIG.

The operation of the plant operation support system 51 will be described below.

In the plant operation support device 51, the plant site side transmission means 9 receives the result of the detailed inspection in the plant control room transmitted from the plant control room side transmission means 10 and outputs the plant site side detailed inspection result file. Output to F8.

The plant site side display / input means 54 reads the information from the plant site side display data file F4 so that the facility site diagnosis result, the background of the diagnosis, and the detailed inspection item can be confirmed at the plant site, and the plant site display / input unit 54 It is displayed on the input unit 55.

When the cause of the abnormality cannot be identified even by the result of the detailed inspection data carried out in the plant control room,
The display / input unit 55 on the site side displays detailed inspection items to be carried out by the site inspector.

Information such as necessary detailed inspection items displayed on the display / input unit 55 can be referred to by a field inspector to perform necessary detailed inspection.

After performing the detailed inspection of the site, the site inspector can input the detailed inspection result using the display / input unit 55. The plant site side display / input means 54 outputs the input detailed inspection result to the plant site side detailed inspection result file F8.

The equipment diagnosing means 7 inputs the detailed inspection results at the site and in the plant control room from the plant site side detailed inspection result file F8, performs the equipment diagnosis by using this as the new information, and the equipment diagnosis result file F3. Update the contents of.

As described above, the cause of the plant abnormality can be swiftly and reliably narrowed down by repeatedly fetching the result of the detailed site inspection and performing the equipment diagnosis by the plant monitoring device 52.

In the above-mentioned detailed inspection of the site, the inspector can perform the detailed inspection from the one with the least difficulty (simple one) from the necessary detailed inspection items. Often, it is possible to identify the cause of an abnormality in the plant without performing detailed inspection items of high difficulty.

On the other hand, in the plant control room side display / input device 53 of this apparatus, the plant control room side transmission means 10 receives the information from the plant site side transmission means 9, and this is sent to the plant control room side display data file F5. Output to. The plant control room side display / input means 56 reads out and inputs necessary information from the plant control room side display data file F5, and the display / input unit 57 displays an abnormal alarm, signal monitoring data,
Display information such as equipment diagnosis results and necessary detailed inspection items.

Among the necessary detailed inspection items described above, there are simple ones in which the result can be obtained simply by checking the meter in the plant control room, and those which check the status of the equipment installed in the plant control room. included. In the plant control room side display / input device 53 of this device, the operator refers to the necessary detailed inspection items, confirms the meters in the plant control room, checks the operation of the devices in the control room, and displays / inputs the results. Part 5
It is configured to be able to input via 7.

FIG. 16 shows an example of the display screen of the display / input unit 57 which enables the input of the detailed inspection result. In the example of FIG. 16, a column 58 for displaying detailed inspection items is provided on the left side of the screen, and an inspection point column 59 and an inspection result input column 60 are arranged on the right side of the detailed inspection item display column 58. When an item to be inspected is selected, the inspection points are displayed in sentences or diagrams accordingly.

In the inspection result input field 60, the "operation" of the device is displayed.
And a field for entering "non-operation" are arranged. The operator may input according to the confirmation result according to the instruction on the screen. Further, in the case of an analog item for investigating the numerical value indicated by the meter, the inspection result input field 60 displays the input area and unit of the numerical value of the meter.

[0135] The detailed inspection result in the plant control room is displayed /
When input from the input unit 57, the plant control room side display /
The input means 56 inputs this detailed inspection result and stores the information in the plant site side detailed inspection result file F8.

The plant control room side transmission means 10 reads the detailed inspection result from the plant control room side detailed inspection result file F9 and transmits it to the plant site side transmission means 9 of the plant monitoring device 52. In the plant monitoring device 52,
As already explained, the detailed inspection result in the plant control room is taken in as new information, and the equipment is diagnosed again.
As a result, the cause of the abnormality can be narrowed down by increasing the number of items used as the judgment material, as compared with the equipment diagnosis executed using only the process data.

By referring to the above equipment diagnosis result, performing detailed inspection from a simpler one, and repeating the equipment diagnosis again, the cause of the abnormality can be narrowed down in a short time, and wasteful investigation work can be reduced.

In the description of the plant operation support device of FIG. 15 described above, only the case where the plant site side display / input means 54, the plant control room side display / input means 56, etc. are added to the plant operation support device of FIG. Although described, the same operation can be achieved even when added to the plant operation support device 1 of FIG.

Next, still another embodiment of the plant operation support system of the invention will be described below. This device has a special configuration as a facility diagnosis means.

FIG. 17 shows an example of the structure of the facility diagnosis means of the plant operation support system of this embodiment. As shown in FIG. 17, the equipment diagnosing means 61 of the present apparatus includes an item-based determination means 62 for determining normality / abnormality for each determination item, an event-based establishment determination means 63 for determining establishment of each abnormal event, and an abnormal event. It is composed of three constituent parts of the event-by-event satisfaction degree confirmation means 64 for confirming the satisfaction degree.

In addition to the data files F1, ..., F9 already described, the present apparatus also has a reference value file F10 that stores the judgment reference values for equipment diagnosis, and the item-by-item judgment means 6
Judgment item status data file F that stores the judgment result of No. 2
11 and a knowledge base F12 in which the knowledge of skilled engineers is registered.
And an equipment diagnosis result intermediate file F13 for storing the determination result of the event-based establishment determination means 63.

Next, the equipment diagnosing means 6 of the present apparatus having the above configuration.
The operation of No. 1 will be described below.

The facility diagnosing means 61 is activated when an abnormality is detected by the signal monitoring means 6 or when the result of detailed inspection carried out in the plant control room or plant site is received. The case of being activated by the signal monitoring means 6, the case of receiving the detailed inspection result of the plant control room, and the case of receiving the detailed inspection result performed at the plant site will be described below in different cases.

When activated by the signal monitoring means 6,
The item-based determination means 62 reads the process data of the plant and the reference value for the determination of each inspection item from the signal monitoring data file F2 and the reference value file F10, and determines whether or not the reference value deviates for each determination item. Make a decision.

Here, the judgment items are some factors for judging the established state of each event that may cause an abnormality, and in addition to the measured values such as pressure, temperature, vibration, etc. This is information that can be actually sent to the site to sensuously acquire the status of each equipment and its surroundings, such as color, smell, and sound.

After making the determination, the item-based determination means 62
Judgment result for each inspection item Status data file F
Output to 11.

FIG. 18 shows the structure of the reference value file F10. As shown in the figure, the reference value file F1
0 has an area for storing reference value data for each inspection item, and each data storage area stores an item id for each inspection item and its reference value. When the reference value is fixed, the item id and the fixed reference value are stored, and when the reference value is variable, the item id and the formula for calculating the reference value such as Y = AX + B are stored. .

When the data to be judged deviates from the reference value, the judgment result of the item is judged as "abnormal". In addition, since the item has not been inspected yet, a judgment item whose condition is unknown cannot be judged.

FIG. 19 shows the structure of the judgment item status data file F11. As shown in the figure, the determination item status data file F11 stores item ids that are individually assigned to the items and determination results.

When the processing by the item-by-item determination means 62 is completed, the item-by-item determination means 62 sends a processing end signal to the event-by-event establishment determination means 63 to activate the event-by-event establishment determination means 63. When the event-based establishment determination means 63 is started, the determination result of each inspection item is read from the determination item status data file F11, and the experience and knowledge of a skilled engineer who has been engaged in equipment maintenance work for many years from the knowledge base F12 is ruled. The judgment rule is read, and the judgment is made regarding the establishment status for each abnormal event. The determination result of the event-based establishment determination means 63 is output to the facility diagnosis result intermediate file F13.

FIG. 20 shows the structure of the knowledge base F12. The knowledge base F12 has two data groups for each abnormal event, that is, an “event establishment determination logic” and an “event establishment degree confirmation survey”.

The area of the "logic for determining event establishment" is A
The logic constituted by the ND condition, the OR condition, and a combination thereof is stored for each determination item. A difficulty level is set for each of these determination items. The difficulty level is roughly classified into a level that can be determined by the process data of the plant, a level that can be determined by the detailed inspection in the plant control room, and a level that can be determined by the detailed inspection at the plant site.

On the other hand, a plurality of judgment item areas are secured for each event in the "event establishment degree confirmation survey" area, and in each judgment item area, an item id, an item name, and a difficulty level are set. Data of degree, sign, reference value, and coefficient are stored.

The above coefficient is a score which is set for each judgment item by weighting the judgment item related to each event according to the depth of the relation, and when the information for judgment is insufficient, This is to give a light weight to the judgment items when the feasibility of the event is estimated from a small amount of data.

The event-based establishment determination means 63 receives the determination result determined by the item-based determination means 62 and investigates the establishment / non-establishment of the "event establishment determination logic" of the knowledge base F12.

However, when the equipment diagnosing means 61 is started from the signal monitoring means 6, since the establishment judgment for each event is made based on the process data of the plant, there are judgment items that cannot be collected depending on the degree of difficulty, and the establishment judgment can be made. Sometimes there is not. Therefore, after completion of the determination by the event-based establishment determination means 63,
The event-by-event establishment degree confirmation means 64 is activated, and the establishment degree of the event is investigated from the currently obtained data.

The event-specific establishment degree confirmation means 64 reads the result of the event-specific establishment determination from the facility diagnosis result intermediate file F13 and investigates the establishment degree of each event based on the "event establishment establishment confirmation check" of the knowledge base F12. To execute.

[0158] The "event establishment degree confirmation investigation" investigates whether or not the judgment items up to the difficulty level of the data that can be currently collected are established, and the sum of the counts of the established judgment items exceeds a predetermined judgment level. In this case, it is determined that there is a high possibility that an event has occurred.

When the equipment diagnosing means 61 is activated by the signal monitoring means 6, a check is carried out on the judgment items which can judge the feasibility only from the process data such as the raw data of the plant and the analysis result, that is, the judgment items of low difficulty. However, if the sum of the coefficients of the established judgment items exceeds the predetermined judgment level, it is recommended to perform a detailed inspection for this event.

After examining the degree of success of each event, the equipment diagnosis means 61 outputs the result to the equipment diagnosis result file F3 as the equipment diagnosis result.

Next, the operation of the equipment diagnostic means 61 which is activated when the detailed inspection result carried out in the plant control room is received will be described.

In this case, the item-based determination means 62 uses the signal monitoring data file F2, the reference value file F10, and the plant site-side detailed inspection result file F8 to obtain plant process data and reference values for each determination item. And the detailed inspection result data carried out in the plant control room are input, and it is judged for each judgment item whether or not the reference value is deviated, and the result is judged item status data file F
Output to 11.

As described above, the item-based judging means 6
2 activates the event-based establishment determination means 63 after the processing is completed.

The event-specific establishment judging means 63 reads the judgment result such as normality / abnormality of each item from the judgment item state data file F11, reads the judgment rule from the knowledge base F12, and based on these judgment rules, Execution judgment is executed for each event. The establishment determination result for each event is output to the facility diagnosis result intermediate file F13.

In the case of the equipment diagnostic means 61 which is activated when the result of the detailed inspection carried out in the plant control room is received, it is possible to judge the establishment of each event based on the process data of the plant and the result of the detailed inspection carried out in the plant control room. Since it is performed, although there is more judgment data than in the previous case, it may not be possible to judge the establishment because of judgment items that cannot be collected due to the degree of difficulty.

For this purpose, the event-based establishment determination means 63 activates the event-based establishment degree confirmation means 64, and the event establishment degree is investigated from the currently obtained data.

[Confirmation Survey of Satisfaction Level by Event] in this case
Conducts a survey on items for which establishment can be determined based on process data such as raw data and analysis results of the plant and data obtained by detailed inspection performed in the plant control room. If the sum of the coefficients of the judgment items established by this investigation exceeds the judgment level, it is judged that there is a high possibility that an event has occurred, and it is recommended to carry out a detailed inspection at the plant site.

Next, the operation of the equipment diagnostic means 61 which is activated when the detailed inspection result carried out at the plant site is received will be described.

In this case, the item-based determination means 62 uses the signal monitoring data file F2, the reference value file F10, and the plant site-side detailed inspection result file F8 to obtain plant process data and reference values for each determination item. And the detailed inspection result data carried out in the plant control room are input, and it is judged for each judgment item whether or not the reference value is deviated, and the result is judged item status data file F
Output to 11.

As described above, the item-by-item determination means 6
2 activates the event-based establishment determination means 63 after the processing is completed.

The event-specific establishment judging means 63 reads the judgment result such as normality / abnormality of each item from the judgment item state data file F11, reads the judgment rule from the knowledge base F12, and based on these judgment rules, Execution judgment is executed for each event. The establishment determination result for each event is output to the facility diagnosis result intermediate file F13.

In the case of the equipment diagnostic means 61 which is activated when the detailed inspection result carried out at the plant site is received, it is established for each event based on the process data of the plant and the detailed inspection result carried out at the plant control room and the plant site. Since the judgment is performed, a relatively large amount of judgment data can often be collected.

However, there are some judgment items that cannot be collected depending on the degree of difficulty, such as "the investigation cannot be done without stopping the plant" and "the investigation cannot be done without dismantling the plant component equipment", and thus it may not be possible to make a judgment of success. In this case, the event-by-event establishment degree confirmation means 64 for investigating the establishment degree of the event from the obtained data is executed.

The event-by-event satisfaction degree confirmation means 64 reads the result of the event-by-event satisfaction determination from the facility diagnosis result intermediate file F13, and executes the satisfaction degree investigation based on the "event satisfaction satisfaction confirmation investigation" of the knowledge base F12. , And outputs the result to the equipment diagnosis result file F3.

The investigation of the establishment degree confirmation by the event-specific establishment degree confirmation means 64 is carried out for the items which can be established, based on the data obtained by the detailed inspections carried out in the plant control room and the plant site. . If the sum of the coefficients of the established items exceeds the judgment level, it is judged that there is a high possibility that an event has occurred, and it is recommended to dismantle the plant component equipment and perform a more detailed inspection.

By repeating the above operation, it becomes possible to carry out a stepwise investigation from a low-intensity detailed inspection, to investigate the cause of the abnormality in a short time, and to find out the cause and the situation of the plant abnormality in the plant control room. It is possible to grasp the information, and also when the inspector goes to the site of the plant for the investigation, it is possible to prepare the technician and the equipment necessary for the detailed inspection in advance.

[0177]

As is apparent from the above description, according to the plant operation support apparatus of the present invention, when a plant abnormality is detected, not only the alarm for the abnormality but also the time when the abnormality occurs and the plants before and after the abnormality occur. Since the status and the cause event of the abnormality analyzed by the facility diagnosis means can be displayed on the display / input unit provided in the plant control room, the operator can immediately recognize the situation and cause of the abnormality while in the plant control room. Grasp,
Or at least to some extent. As a result, it is possible to save time and quickly in order to understand and deal with abnormal situations by going back and forth between the plant site and the plant control room, especially when the installation location of the plant equipment is far away from the plant control room. Correspondence can prevent a big accident. Further, the display / input device on the plant site side and the display / input device on the plant control room side allow the plant site and the plant control room to cooperate with each other to promptly investigate the cause while giving mutual information.

[0178]

[0179]

[0180]

[0181]

[0182]

[0183]

[0184]

[0185]

[0186]

[0187]

[0188]

[0189]

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a configuration of an embodiment of a plant operation support device of the present invention.

FIG. 2 is a diagram showing a configuration of a process data file.

FIG. 3 is a diagram showing a configuration of a signal monitoring data file.

FIG. 4 is a causal tree diagram (F of a causative event of plant abnormality)
The figure which illustrated the TA table).

FIG. 5 is a diagram showing the structure of an equipment diagnosis result file.

FIG. 6 is a diagram showing the configuration of a display data file on the plant site side.

FIG. 7 is a diagram exemplifying an alarm screen for notifying a plant abnormality.

FIG. 8 is a diagram showing an example of a plant abnormality data display screen output to the display unit of the plant control room.

FIG. 9 is a diagram exemplifying an FTA table of a cause event of a plant abnormality in which the establishment status of each event is color-coded stepwise.

FIG. 10 is a diagram exemplifying a trend graph of plant process data.

FIG. 11 is a diagram showing the configuration of another embodiment of the plant operation support device of the present invention.

FIG. 12 is a diagram showing the configuration of a detailed inspection item list file.

FIG. 13 is a diagram exemplifying a screen of detailed inspection information output to the display unit of the plant control room.

FIG. 14 is a diagram exemplifying detailed inspection contents displayed when an arbitrary detailed inspection item is selected on the detailed inspection information screen.

FIG. 15 is a view showing the configuration of another embodiment of the plant operation support system of the invention.

FIG. 16 is a diagram showing an example of a screen on which a detailed inspection result in the plant control room can be input.

FIG. 17 is a diagram showing the configuration of another embodiment of the plant operation support system of the invention.

FIG. 18 is a diagram showing a configuration of a reference value file used for determining a determination item.

FIG. 19 is a view showing the structure of a judgment item status data file.

FIG. 20 is a diagram showing the structure of a knowledge base.

[Explanation of symbols]

1 Plant operation support device 2 Plant monitoring equipment 3 Plant control room side display / input device 4 transmission lines 5 Process input means 6 Signal monitoring means 7 Equipment diagnostic means 8 Display information extraction means 9 Plant site side transmission means 10 Plant control room side transmission means 11 Display 12 Plant control room display means 41 Plant operation support device 42 Plant monitoring device 43 Detailed inspection item search method 51 Plant operation support device 52 Plant monitoring device 53 Plant control room side display / input device 54 Plant site side display / input means 55 Display / input section 56 Plant control room side display / input means 57 Display / input section 61 Equipment diagnosis means 62 Item-based judgment means 63 Event-specific establishment determination means 64 Means of confirming degree of success by event F1 process data file F2 signal monitoring data file F3 equipment diagnosis result file F4 Plant site display data file F5 Plant control room side display data file F6 Detailed inspection item list file F7 detailed inspection request file F8 Plant site side detailed inspection result file F9 Plant control room side detailed inspection result file F10 standard value file F12 knowledge base

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Miki Nagashima 1-24-2, Harumi-cho, Fuchu-shi, Tokyo Inside Toshiba System Technology Co., Ltd. (56) Reference JP-A-4-205205 (JP, A) JP-A-4-359640 (JP, A) JP-A-4-168506 (JP, A) Actual development: HEI 6-16846 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) G05B 23/00-23/02

Claims (4)

(57) [Claims] 1. A plant monitoring device installed near a plant equipment, a plant control room side display / input device installed in a plant control room, and between the plant monitoring device and the plant control room side display / input device. And a transmission line for data transmission laid, wherein the plant monitoring device is a process input means for periodically collecting process data of a plant from a sensor attached to a plant device; Signal monitoring means for monitoring process data and outputting signal monitoring data for facility diagnosis and abnormality display when an abnormality is detected, and inputting the signal monitoring data when the signal monitoring means detects an abnormality Equipment diagnosis means for performing equipment diagnosis by inputting the diagnosis result of the equipment diagnosis means and the signal monitoring data to detect an abnormality in the operator. Display information extracting means for extracting display data effective for knowing, plant site side transmitting means for transmitting the display data extracted by the display information extracting means to the plant control room side display / input device, and the display information The display data extracted by the extraction means and the detailed inspection result obtained in the plant control room are displayed on the display / input unit installed near the plant equipment, and the plant input via this display / input unit is also displayed. A plant site side display / input means for outputting a detailed inspection result of the site to the equipment diagnosis means, wherein the plant control room side display / input device receives the display data transmitted from the plant site side transmission means. And transmitting the display data received by the plant control room side transmission means to the display / input unit installed in the plant control room. And a plant control room side display / input means for outputting the detailed inspection result of the plant control room input through the display / input section to the plant control room side transmission means. Plant operation support device. 2. The plant control room side display / input means,
The plant operation support device according to claim 1, wherein a causal relationship tree diagram showing the history of the abnormality is displayed on the display / input unit. 3. The plant operation support device according to claim 1, wherein the display information extraction means extracts a cross-section data list including sensor measurement values at the time of occurrence of an abnormality and corresponding reference values. 4. The equipment diagnosing means compares the plant process data and the detailed inspection result with a predetermined reference value, and judges the abnormality or normal for each item, and the item judging means. Based on the judgment item state data, the event-specific establishment determination means for determining the establishment status of the event that may cause the plant abnormality by the determination logic, and the multiple determination items that are the establishment requirements for the event are currently known. 2. An event-by-event satisfaction level confirmation means for making a determination based on existing data, and for confirming the event satisfaction level by the magnitude of the sum of the coefficients attached to the established determination items. The plant operation support device according to claim 3.