JPH10161737A - Device for managing and supporting operation of plant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To quickly retrieve and edit operation data in an optional time from before several hours till before several years by storing operation data and a retrieval code obtained by means of encoding an equipment number and an equipment operation data number in a storage device. SOLUTION: In a plant operation managing and supporting device 11, numerical data is fetched to a plant signal input/output device 4 by fixed cycle with a plant signal network device 3 as a plant output signal together with a code which indicates the equipment. An input signal processing means 13 in an electronic calculating machine 5 gives the retrieval code to an input data value being the plant output signal, adds status information, etc., expressing the operation operating state, etc., of the equipment so as to execute generation as input information and executes preservation in a fixed magnetic disk device 9 as an input data collecting file. Then, not only the operation state of the plant at the point of present time is monitored but also operation data of the plant and its history in the past optional time, which are preserved in a magneto- optical disk for a long term, are quickly retrieved and displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for managing operating conditions of a plant such as a hydroelectric or thermal power plant, storing operating data of the plant for a long period of time, and operating data at a date and time specified by an operator's request. Plant operation management and support with functions to search and display information, to perform periodic failure diagnosis of plant equipment and auxiliary equipment, and to display guidance on normal operation and abnormal operation by operators It concerns the device.

[0002]

FIG. 12 shows, for example, Mitsubishi Electric Technical Report No. 62.
FIG. 7 is a configuration diagram showing a conventional plant operation data management system shown in Vol. 7 (1988). In FIG. 1, a plant operation data management device 1 includes a plant signal (hereinafter, operation data and operation data) which is operation information of equipment and facilities in a plant transmitted from a power generation plant device 2 via a plant signal network device 3. A) a plant signal input / output device 4 for inputting the operation data, an electronic computer 5 for processing the operation data, a plant simulation display device 6 for displaying the input operation data to an operator, and a CRT display device 7;
A printer device 8 for printing operation data and the like, and a fixed magnetic disk device 9 for storing computer programs and calculation data
And an optical disk 10 for storing monthly operation history data of operation data.

Next, the operation will be described. The computer 5 of the plant operation data management device 1 fetches the operation data from the power generation plant device 2 at a constant period (about several seconds) from the plant signal input / output device 4 via the plant signal network device 3 and outputs the engineering value. Perform the conversion process,
Control is performed such that data arbitrarily selected from the input conversion data is displayed on the plant simulation device 6 or the CRT display device 7 or printed on the printer device 8. The input conversion data is selected and counted for a periodic log, and is temporarily stored in the fixed magnetic disk device 9. And
Of the operation data temporarily stored in the fixed magnetic disk device 9, the previous day's operation history data is transferred from the fixed magnetic disk device 9 to the optical disk 10 once a day, for example. The log is stored in the history database, and is log-printed in the printer device 8 at a constant cycle (every hour, every day, every month, etc.). In addition, in response to a request from the operator, the operation data of the specified type and the specified period is searched from the monthly operation history database in the optical disc 10,
The extracted operation data can be displayed on the CRT display device 7.

[0004]

Since the conventional plant operation data management device is configured as described above, it is difficult for an operator to monitor the operation state of the plant and operate it normally. The operation data is transferred to the plant simulator 6 or C
It is necessary to confirm with the RT display device 7 or make a judgment by comparing with the printed contents of the plant operation log recorded on the daily report or monthly report from several hours to several months before printed on the printer device 8. Furthermore, when an emergency operation such as a plant failure is required, the cause of the failure must be estimated and confirmed immediately,
It is necessary to instruct recovery work of the failed part, and the operation data from several hours to several months before must be prepared immediately. However, since the amount of the plant operation data recorded in the daily report or the monthly report is enormous, it is difficult to search the operation data to be compared with the current operation data from the daily report or the monthly report in a short time. there were. Furthermore,
The conventional plant operation data management device described above does not have a support function for an emergency operation operation or a recovery operation that requires a high level of technical capability, so depending on the type of failure,
There was a problem that it was sometimes difficult for an operator to judge an accurate driving operation.

Further, when the present applicant saves operation data on an optical disk in accordance with the type of operation data and the date and time when the operation data was fetched, a position where the operation data is written to the optical disk is calculated, and the operation data is stored in the optical disk. A plant operation history data management device that stores the calculated writing position is disclosed in Japanese Patent Laid-Open No. 4-34822.
No. 8). This is to determine the operation data storage position on the optical disk 10 according to the data number and the input date and time of the operation data of the received operation data of the plant. When data is to be stored, the storage position is determined by the data number i (serial number starting from No. 1), the input date and time (h: m on the jth day from the storage start date), and the type of operation data N to be stored. Is calculated as a function of the block size B for one day in proportion to the above, and the operation data is stored at the calculated position on the optical disc 9. Therefore, according to such a storage method, even when the type N of the operation data to be stored is small, the optical disk 10 can be used efficiently. When searching the stored operation data, the operator specifies the data number I of the operation data and the designated date and time (D day h h m) as shown in FIG. The above operation data can be searched and displayed on the CRT display device 7.

On the other hand, the plant operation management / support device stores the plant operation data, prints the log on the printer device 8 at regular intervals (every hour, every day, every month, etc.), and stores it as documents such as daily reports and monthly reports. In addition to the above, if necessary, take out the above operation data, edit the daily report and monthly report, and display them on the plant operation management and support equipment to manage the equipment and facilities in the plant. You need to do it. In particular, at the time of a plant failure or the like, it is necessary to immediately extract the operation data and analyze the operation data of the failed device or equipment and perform a failure diagnosis. However, since the conventional example is for efficiently storing the operation data of the plant on the optical disk, the search for the operation data is performed by using the serial number starting from No. 1 and the specified date and time (D m), the operation data of each device is searched for one by one. Therefore, it is inefficient to specify the device to be searched and to search a plurality of operation data of the device. there were. The operation data searched in the above-described conventional example is, for example, numerical data such as a boiler temperature, and the information data of the device such as data status information and alarm level information is stored simultaneously with the numerical data. Therefore, the above status information had to be searched separately. In addition, since the above conventional example is also a plant operation data management device, when an emergency operation operation is required in the event of a plant failure, it is not possible to quickly estimate and confirm the cause of the failure and to show the recovery operation procedure. Was.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and stores various operation data of a plant and an edited file obtained by editing the operation data. An object of the present invention is to provide a plant operation management / support device that can quickly search, edit, and display the above data.

In addition, the present invention displays alarm monitoring of operation data and alarm items in parallel during normal operation of the plant, and in the case of abnormal operation, gives input alarm information a predetermined priority. It is an object of the present invention to provide a plant operation management and support device that can be displayed according to the order. Further, the present invention provides a plant operation management / support device that can analyze displayed plant data and perform failure diagnosis in real time when a plant failure occurs, and can display failure recovery operation guidance to operators. Aim.

[0009]

According to a first aspect of the present invention, there is provided a plant operation management and support apparatus, comprising: a search code obtained by coding operation data of a plant, an equipment number of the equipment, and an operation data number of the equipment. Are stored in a storage device, and the stored operation data is searched by the search code, and is displayed on a display device.

According to a second aspect of the present invention, there is provided a plant operation management / support device for storing, in addition to plant operation data, status information comprising an alarm operation level indicating an operation state of the equipment and a value level of the operation data. Is stored.

According to a third aspect of the present invention, there is provided a plant operation management and support apparatus, wherein an alarm upper limit value and an alarm lower limit value of equipment in a plant are used as status information of the equipment.

According to a fourth aspect of the present invention, in the plant operation management / support apparatus, the storage device is formed of a replaceable magneto-optical disk.

According to a fifth aspect of the present invention, there is provided a plant operation management and support apparatus which tabulates plant operation data at regular intervals, edits periodic logs such as hourly reports, daily reports, monthly reports, and annual reports. The obtained periodic log is stored in a storage device.

According to a sixth aspect of the present invention, a plant operation management and support apparatus searches and edits specified operation data from a plant operation data stored in a storage device in a range between specified times. And printing or displaying.

According to a seventh aspect of the present invention, there is provided a plant operation management and support device which displays alarm monitoring of operation data and alarm items in parallel during normal operation of the plant, and also displays abnormal items during abnormal operation. Is characterized by displaying inputted alarm information in accordance with a predetermined priority.

A plant operation management and support device according to claim 8 of the present invention performs a periodic failure diagnosis of plant equipment during normal operation of the plant, and analyzes the cause of the failure when an abnormality occurs. A support device is provided.

A plant operation management and support apparatus according to claim 9 of the present invention provides a procedure guidance for a regular operation of starting, a continuous operation and a stop operation of a plant, and an operation procedure guidance for an emergency operation in an abnormal state of the plant. Is displayed.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. In the following description, portions common to the conventional example will be described using the same reference numerals. Embodiment 1 FIG. FIG. 1 is a configuration diagram of a plant operation management system according to Embodiment 1 of the present invention. In FIG. 1, a plant operation management / support device 11 includes operation data (plant data) of a power generation plant device 2 transmitted from a power generation plant device 2 including a plurality of devices and equipment in the plant via a plant signal network device 3. Signal), a plant signal input / output device 4 for sending a control signal to the power generation plant device 2, an input device 12 for inputting an instruction for processing operation data, and the like, and processing the input operation data. A computer 5 having an input signal processing means 13 for performing operation, a plant simulation display device 6 and a CRT display device 7 for displaying captured operation data to an operator, a printer device 8 for printing the operation data and the like, a computer program, A fixed magnetic disk device 9 for storing the operation data processed by the computer 5, and a fixed magnetic disk device It includes a long-term storing replacement type magneto-optical disk device 14, and a long-term operation data input-output device 15 for storing and searching for operating data of the exchange type magneto-optical disk apparatus 14 temporarily the stored operating data to.

Next, the operation of the plant operation management / support device will be described. Plant operation management
The support device 11 stores, for example, numerical data such as the temperature and pressure of a boiler in a thermal power plant with a device (boiler).
And a code indicating the type of data (temperature, pressure), as well as a plant output signal, which is taken into the plant signal input / output device 4 via the plant signal network device 3 at regular intervals. The electronic computer 5 performs an engineering value conversion process on the plant output signal, that is, the operation data,
Control is performed such that data arbitrarily selected from the input conversion data is displayed on the plant simulation device 6 or the CRT display device 7 or printed on the printer device 8. At this time, the input signal processing means 13 in the electronic computer 5 adds “data type” indicating the code of the device and “data No” indicating the data code to the input data value which is the plant output signal as a search code. Input data KEY consisting of
Is provided, and input information is created by adding status information and the like indicating the operating state of the equipment sent separately from the plant signal. The input information is tabulated and edited every minute, and stored in the fixed magnetic disk device 9 as an input data collection file F as shown in FIG.

In this file F, the input date of the plant signal input to the plant operation management / support device 11,
Along with the input start time and the input end time, the operation data of the plant is recorded as an input record every minute, and the input records 1 to 60 are arranged in the order of the input time. The input record 16 includes a record number (1 to 60) 16a and a data collection time 16b.
They are recorded in the order of o. As shown in FIG. 2, the input information 17 includes an input data KEY 17a, an input status flag s1 representing the operation of the device, and an alarm status s2 of the operation data.
7b and a lower alarm limit value 17 of the operation data set in advance.
c, an alarm upper limit value 17d, and an input data value 17e as operation data are recorded. Here, the alarm level s2
Is the input operation data value and the alarm lower limit value 17c.
And the result of level evaluation by comparing the alarm level and the alarm upper limit value 17d is recorded as the alarm level value (1 to n). The input status 17b and the alarm lower limit 17
c and the alarm upper limit 17d are referred to as status information 17s.
The operation data stored in the fixed magnetic disk device 9 in such a file configuration is stored in the long-term operation data input / output device 1.
5, the data is periodically stored in the exchangeable magneto-optical disk device 14 as one-hour data.

When the operator tries to display specific operation data, for example, a graph of the time change of the temperature and pressure of the boiler in the plant for the past 10 days on the CRT display device 7, the operator First, the input device 12
On an input screen for calling and displaying the data displayed on the T display device 7, a data type number corresponding to the boiler, each data No. corresponding to the temperature and the pressure, a date and time of the search date and a search period are input. . And the computer 5
Transfers the date and time code of the input data collection file F and the code of the input data KEY corresponding to the data type number and data No. to the long-term operation data input / output device 15 from the date and time of the search date. 15 retrieves the operation data from the exchangeable magneto-optical disk drive 14 based on the code and outputs it to the computer 5. When displaying the operation data on the CRT display device 7 in the form of a graph, the electronic computer 5 does not have to bother calling the alarm level of the operation data and comparing it with the operation data. According to the status information of the device, for example, when the temperature change of the boiler is normal, but the boiler pressure has exceeded the lower alarm limit for the past two days, the above data is displayed as a yellow point, etc. As a result, the operator can be immediately alerted. Also, the status information has an input state flag indicating whether the transmitted operation data is normal or abnormal, such as when the sensor has failed. The operation data can be evaluated without checking the situation. Also,
In the exchangeable magneto-optical disk device 14, the magneto-optical disk can be exchanged. Therefore, by exchanging the magneto-optical disk at any time, long-term data of any year and month can be easily stored and retrieved again. .

As described above, according to the present embodiment, not only the operation state of the plant at the present time is monitored, but also the operation data of the plant at any given time in the past and its history stored on the magneto-optical disk for a long time. Can be quickly searched and displayed, so that the contents of the plant operation from the past operation status to the present can be verified in a short time. In addition,
In the present embodiment, the input data KEY in the power plant input data collection file stored in the fixed magnetic disk and the magneto-optical disk device was composed of two data types and data Nos. By recording, as a search code, the input data KEY in which the data numbers in each device group of the power plant are further classified, the data search can be performed more efficiently and the search speed can be increased.

Embodiment 2 FIG. In the first embodiment,
Although the case where the operation data and the operation contents of the plant at an arbitrary time in the past are reproduced from the magneto-optical disk device 14 has been described, as shown in FIG. With the provision of the operation data 18, the operation data and the contents of the operation are automatically edited at regular time intervals in the form of a periodic log (daily report, monthly report, annual report, etc.) and automatically stored on the magneto-optical disk 14. Using the device 12, the data of the periodic log can be edited to create an edited data file and stored on the magneto-optical disk 14.

FIG. 4 shows the flow of the automatic edit data of the periodic log and the flow of the arbitrary edit data by the manual selection of the operator. The plant input data collection file F in the fixed magnetic disk unit 9 has the above-mentioned structure. As such, each device group in the plant (eg, boiler, turbine, generator, etc.)
All the input data and calculated values from are collected every minute. Here, in the automatic editing of the driving data daily report,
Data necessary for a daily report set in advance by the automatic editing program is selected from the data for each minute, and the data is subjected to editing processing such as cumulative calculation, technical calculation, etc., and a daily operating data report is created. In addition, by similar editing processing, monthly report,
Annual reports can be created automatically. Further, even when the operator manually specifies the editing data and the editing period, the operation data editing device 18 allows the plant input data collection file F, the automatically edited daily report data file, the monthly report data file, and the annual report data file. Can be searched and edited at any time to create an arbitrary edited data file. That is, the operator transmits the information of the device having the alarm level information s2 (see FIG. 2) in the plant input data editing file F to each device group (boiler, turbine, generator, etc.) in the plant. It is possible to create an edited data file such as an alarm monitoring file that is classified and recorded, and an alarm level file in which operation data is edited for each alarm level based on the alarm level information s2. Then, during normal operation of the plant, the operator
The RT monitor 7 displays the alarm monitoring status of each device group as shown in FIG.
Alarm items retrieved from the alarm monitoring file can be displayed in parallel. In addition, when an accident occurs in the power plant, as shown in FIG. 6, an alarm lamp display column P on the display screen of the simulation display device 6 is displayed so as to blink, and a list Q of devices that have generated an alarm signal is displayed as described above. It can be displayed below the display screen. If there are a plurality of devices that have generated an alarm signal, and the operator is uncertain about which alarm should be given priority, the operator can use the input device 12 to set the alarm level as shown in FIG. By instructing the file to be displayed on the display screen of the CRT device 7, the priority of the alarm can be known, and therefore, the operator can confirm the displayed priority and support the appropriate recovery operation. Can do it.

As described above, according to this embodiment, the periodic log such as the daily report, the monthly report, and the annual report can be automatically edited, and the edited periodic log can be displayed on the operation management / support device of the plant. Therefore, the operation data of the designated device for an arbitrary period can be quickly confirmed. Further, the operator can search and edit the stored periodic log to create and utilize a file effective for plant operation management. Further, when an accident occurs in the power plant, it is possible to know the priority of a plurality of generated alarms, so that it is possible to support an accurate recovery operation.

Embodiment 3 FIG. In the second embodiment,
Although the case where the operation data editing device 18 is provided to re-edit the plant data for an arbitrary period and display the alarm priority at the time of an accident has been described, as shown in FIG.
A plant operation support device 19 is provided in the plant operation management / support device 11 to analyze and display the cause of a failure in the event of a plant abnormality and provide emergency operation guidance to the operator.
It can be displayed on the RT device 7 or printed on the printer device 8. FIGS. 9, 10, and 11 show a method of creating a failure countermeasure file 20 used when an operator causes a CRT device 7 to display failure cause information and emergency operation guidance information when an accident occurs in a power plant. FIG. 4 is a diagram for explaining a data search method for preventing failures. The failure countermeasure file 20 is obtained from the record data 17 of the input data collection file F stored in the exchangeable magneto-optical disk from the input data KEY of the alarm target device.
And the alarm level classification, and for each alarm level, a record 21 of each device including the input data KEY 21a of each device, a failure cause record in which a failure cause message is recorded, and a recovery operation record in which a recovery operation message is recorded. A plurality of recorded alarm level item tables 20a to 20z
Consists of Note that the cause of a device failure depends not only on the alarm level of the device but also on the combination of the alarm levels of the related devices of the device. Therefore, the record 21 of each device includes a plurality of failure cause records and recovery operation records. Is recorded. Then, the failure countermeasure file 20
Is registered in the plant operation support device 19.

When an accident or the like occurs in the power plant, the computer 5 selects the alarm level of the highest-priority device in the above-mentioned alarm level ranking table, and the plant operation support device 1
9 is searched for, for example, from the alarm level item table 20a of the device described above.
The record 21 of the device is read and the CRT display device 7
Next, a failure estimation message as shown in FIG. 10 is displayed. Then, the corresponding failure cause is specified on the display screen among the plurality of failure cause messages. For example, if the output signal of the sensor 1 for measuring the temperature of the turbine exceeds an alarm level, and if the output signal of the sensor 2 installed in the vicinity of the sensor 1 is a normal value, the alarm is generated when the sensor 1 fails. It is estimated that if the output signal of the sensor 2 also exceeds the alarm level, the failure is estimated to be the cooling water circulation system of the turbine, and the failure estimation message on the display screen is surrounded by a frame as shown in FIG. And let the operator visually recognize it. Then, when the operator selects the above specified message on the display screen, a recovery operation message as shown in FIG. 11 is displayed, and the operator performs the operation procedure indicated in the recovery operation message. Therefore, it is possible to give an instruction for the recovery operation. Further, the CRT display device 7 may simultaneously display the alarm input data, the failure estimation message, and the emergency operation message.

As described above, according to the present embodiment, when a plant failure occurs, a message record corresponding to the failure cause is searched from the alarm level item table of the failure countermeasure file 20 registered in the plant operation support apparatus. By outputting the alarm input data, the failure estimation message, and the emergency operation message to the CRT display device, the emergency operation guidance to the operator can be displayed at high speed, and a quick failure measure can be taken. Also,
Even in the start-up / continuous operation / stop operation when the power plant is normal, by registering the normal operation table in the plant operation support device, the steady-state guidance in each plant state is displayed on the CRT display device, It can be printed to assist the operator in operating without errors.

[0029]

As described above, according to the first aspect of the present invention, the operation data is stored in the storage device together with the search code obtained by coding the equipment number in the plant and the operation data number of the equipment. In addition, since the data is displayed on the display device, the operation data and the history of the plant at an arbitrary time can be displayed and confirmed on the display device in a short time. According to the second aspect of the present invention, since the operation data of the equipment in the plant is stored together with the operation information of the equipment and the status information including the alarm level indicating the level of the value of the operation data, The operating status can be grasped simultaneously with the operating data. Further, according to the third aspect of the present invention, the alarm upper limit value and the alarm lower limit value of the equipment in the plant are also stored as status information of the equipment, so that the alarm level of the operation data is specifically grasped. be able to. According to the fourth aspect of the present invention, the exchangeable magneto-optical disk having a large storage capacity and capable of exchanging the storage medium is used as the storage medium, so that long-term storage and re-search of data are easy. It is.

According to the fifth aspect of the present invention, the operation data of the plant is tabulated at regular intervals so that the periodic logs such as hourly, daily, monthly, and annual reports can be edited. In addition to being able to quickly confirm the operation data of any given period, the stored periodic log can be searched and edited, and a file effective for plant operation management can be created and used. Further, according to the invention of claim 6, it is possible to search, edit, print or display the specified operation data from the operation data of the plant stored in the storage device within the range of the specified time. As a result, the operator can quickly obtain effective data for operation management. Furthermore, according to the invention as set forth in claim 7, during normal operation of the plant, alarm monitoring of operation data and alarm items are displayed in parallel,
In the case of abnormal operation, input alarm information can be displayed according to a predetermined priority, so that when an accident occurs in a power plant, the priority of a plurality of alarms that have occurred can be known, and therefore, recovery can be performed. Operation support can be performed accurately.

According to the invention, a plant operation support device is provided for performing a periodic failure diagnosis of plant equipment during normal operation of the plant and analyzing the cause of the failure when an abnormality occurs. Therefore, it is possible to quickly estimate the cause of the failure. Furthermore, according to the ninth aspect of the present invention, the procedure guidance for the normal operation of the start-up / continuous operation / stop operation of the plant and the operation procedure guidance for the emergency operation in the abnormal state of the plant can be displayed. Quick failure measures can be taken.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a power plant operation management system according to a first embodiment of the present invention.

FIG. 2 is a data configuration diagram of a plant input data collection file stored in a fixed magnetic disk and a magneto-optical disk device in the power plant operation management / support device according to the first embodiment of the present invention.

FIG. 3 is a configuration diagram of an operation management and support device for a power plant according to Embodiment 2 of the present invention.

FIG. 4 is a diagram showing a method for editing a regular log and edit data designated by an operator according to the second embodiment of the present invention;

FIG. 5 is a display screen diagram of alarm monitoring and alarm items according to Embodiment 2 of the present invention.

FIG. 6 is a display screen diagram of the plant simulation display device when an alarm is generated according to the second embodiment of the present invention.

FIG. 7 is a diagram showing C when an alarm occurs according to the second embodiment of the present invention.
It is a display screen figure of an RT display device.

FIG. 8 is a configuration diagram of an operation management / support device for a power plant according to Embodiment 3 of the present invention.

FIG. 9 is a configuration diagram of a failure countermeasure file according to the third embodiment of the present invention.

FIG. 10 is a display screen view of a failure cause message according to Embodiment 3 of the present invention.

FIG. 11 is a display screen diagram of a restoration operation message according to Embodiment 3 of the present invention.

FIG. 12 is a configuration diagram of a conventional plant operation data management device.

FIG. 13 is a diagram showing a file configuration of an optical disk of a conventional plant operation data management device.

[Explanation of symbols]

1 Plant operation data management device, 2 Power generation plant device, 3 Plant signal network device, 4 Plant signal input / output device, 5 Computer, 6 Plant simulation display device, 7 CRT display device, 8 Printer device, 9
Fixed magnetic disk device, 10 optical disk, 11 plant operation management / support device, 12 input device, 13
Input signal processing means, 14 exchangeable magneto-optical disk drive,
15 Long-term operation data input / output device, F input data collection file, 16 input records 17 record data, 18 operation data editing device, 1
9 Plant operation support device.

Claims (9)

[Claims] 1. A plant operation management and support device comprising a display device for displaying operation data of a plant and a storage device for storing the operation data, the operation data comprising:
A search code obtained by encoding a device number in the plant and an operation data number of the device is stored in the storage device, and the stored operation data is searched by the search code and displayed on the display device. An operation management and support device for a plant, characterized in that: 2. The plant according to claim 1, wherein the storage device stores status information including an operation level of the equipment and an alarm level indicating a level of a value of the operation data together with the operation data in the plant. Operation management and support equipment. 3. The plant operation management and support device according to claim 2, wherein an upper alarm value and a lower alarm value of the plant are used as status information of the equipment. 4. The plant operation management / support device according to claim 1, wherein the storage device is formed of a replaceable magneto-optical disk. 5. The method according to claim 1, wherein the operation data of the plant is tabulated at regular intervals, a periodic log such as an hourly report, a daily report, a monthly report, and an annual report is edited, and the edited periodic log is stored in a storage device. The plant operation management / support device according to claim 1 or 2. 6. The method according to claim 1, wherein the specified operation data is searched for, edited, printed or displayed from the operation data of the plant stored in the storage device in a range between specified times. The plant operation management / support device according to claim 1 or 2. 7. During normal operation of the plant, alarm monitoring of operation data and alarm items are displayed in parallel, and in the case of abnormal operation, input alarm information is displayed according to a predetermined priority. 2. The method according to claim 1, wherein
Or a plant operation management / support device according to claim 2. 8. A plant operation support device for performing periodic failure diagnosis of plant equipment during normal operation of a plant and analyzing a cause of the failure when an abnormality occurs. Item 2. A plant operation management / support device according to item 2. 9. The method according to claim 1, wherein guidance for a routine operation of a start-up / continuous operation / stop operation of the plant and guidance for an operation procedure in an emergency operation in an abnormal state of the plant are displayed. The plant operation management and support device according to claim 2.