JP6640348B2 - Data analysis system - Google Patents

Description

  The present invention relates to a data analysis system.

  For example, industrial plants in the fields of electric power, steel, water and sewage, petroleum, and chemicals are connected to each other by piping or the like in order to realize a designed plant process operation, and are adjusted and controlled under necessary conditions. . For the adjustment and control of these facilities, the physical state of each facility such as temperature, pressure, flow rate, etc. is input, and after appropriate calculations are applied to these physical states, output to the controlled devices such as valves, heaters, fans, and motors Is performed by giving

  The measurement, monitoring, and control device that performs such an operation fetches measurement signals (measurement items) from sensors and the like provided in each facility at regular intervals. The measurement monitoring control device is connected to a maintenance device having a control function of plant monitoring control such as control / protection logic, parameter creation, parameter management, and the like.

  The time-series data of the measurement item is stored in the maintenance device, but the time-series data of the measurement item may be stored in a data recording device connected to the maintenance device. In addition, the measurement monitoring control device is an analysis device that performs analysis processing for identifying a cause of failure of the controlled device using data of a measurement signal indicating the state of the device, analysis processing for detecting a failure sign, and the like. Sometimes connected to.

  Patent Document 1 discloses a method of generating key information as analysis data for analyzing a past plant state based on history data, and sharing information in the plant via the key information. .

JP 2012-99071 A

By the way, the uses of the maintenance device, the data recording device, and the analysis device are different from each other, and the user of each device and the requirement for each device to use data are also different for each device.
For example, in the maintenance device, operations such as adjustment of plant operation by a plant operator, operation confirmation of a control program by a coordinator of a control program, identification of an equipment failure location, and the like are performed. Since these operations are performed during the normal operation of the plant and during the trial operation of the plant, responsiveness of operations for displaying data output from the plant on a display unit and retrieving data is required.
Further, the data recording device is required to correctly record data output from the plant in a time series.
In the analysis device, for example, a maintenance manager or the like of the controlled device performs data collation, processing, analysis, and the like for identifying the cause of the device failure and detecting a sign of failure. Is required to be easy to process.

  However, in the plant analysis system disclosed in Patent Literature 1, the operation of each device configuring the system is not related. For this reason, for example, even when the user of the maintenance device and the user of the analysis device use the same data, the user of each device needs to make individual settings for each device.

  The present invention has been made in view of such a situation, and has as its object to reduce the work required for data analysis processing.

A data analysis system according to the present invention includes a maintenance device that manages creation and management of control protection logic and parameters of a device to be controlled constituting a plant, and additional information used for data search by the analysis device. The data recording apparatus includes a data recording device that stores data recording items indicating an operation state of the device, and an analysis device that analyzes data read from the data recording device for a predetermined purpose.
The maintenance device or the data recording device uses the predetermined user interface set for each device to select and set the recording items stored by the analysis device to the analysis device.
The analysis device stores the data extracted from the data recording device in a recording item selected and set by the maintenance device or the data recording device, and performs a predetermined analysis process.
The maintenance device transmits a signal identifier indicating a specific signal to the analyzer, and acquires additional information retrieved by the analyzer based on the signal identifier from the analyzer.

According to the present invention, the analysis device can perform a predetermined analysis process based on the data stored in the recording items selected and set by the maintenance device or the data recording device. The setting work for can be reduced.
Problems, configurations, and effects other than those described above will be apparent from the following description of the embodiment.

1 is a block diagram illustrating an example of the overall configuration of a data analysis system according to an embodiment of the present invention. FIG. 3 is a block diagram illustrating a hardware configuration example of a computer according to an embodiment of the present invention. FIG. 3 is an explanatory diagram showing a first configuration example of a recording item according to an embodiment of the present invention. FIG. 9 is an explanatory diagram showing a second configuration example of the recording items according to the embodiment of the present invention. It is an explanatory view showing an example of processing which a maintenance device concerning one embodiment of the present invention acquires plant state information from an analysis device using registered information. FIG. 5 is an explanatory diagram illustrating an example of a process in which the analysis device according to the embodiment of the present invention selects a signal necessary for analysis and registers the signal as recorded data in the analysis device database. FIG. 4 is an explanatory diagram showing an example in which the analysis device according to one embodiment of the present invention acquires a cause of failure using failure sign analysis target data. It is explanatory drawing which shows the example of the process which the process table preparation management apparatus which concerns on one Embodiment of this invention produces an actual process table. FIG. 6 is an explanatory diagram illustrating an example of an analysis process in which the analysis device according to the embodiment of the present invention specifies a cause of failure of a control target device. FIG. 9 is an explanatory diagram illustrating an example of a process of creating comparison sample data according to an embodiment of the present invention. FIG. 7 is an explanatory diagram showing a display example of a range of minimum and maximum values of comparison sample data derived for each process step according to an embodiment of the present invention, and recorded data to be analyzed; FIG. 4 is an explanatory diagram showing an example in which a maintenance device according to an embodiment of the present invention registers recorded items for each test. FIG. 11 is an explanatory diagram illustrating an example of a process of registering relation signal information in a recording item according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the specification and the drawings, components having substantially the same function or configuration are denoted by the same reference numerals, and redundant description will be omitted.
FIG. 1 is a block diagram illustrating an example of the overall configuration of the data analysis system 1.

  The data analysis system 1 includes a maintenance device 2, a measurement monitoring control device 3, a process chart creation management device 4, an operation monitoring terminal 5, a data recording device 6, and an analysis device 7. The maintenance device 2, the measurement monitoring control device 3, the process chart creation management device 4, the data recording device 6, and the analysis device 7 are connected to the measurement monitoring network N and can communicate data with each other. The operation monitoring terminal 5 is connected to the measurement monitoring control device 3. The data analysis system 1 performs, for example, an analysis process of data output from a power plant (hereinafter, referred to as a “plant”). Note that the data analysis system 1 can be used as a plant control system for controlling the operation of the plant.

  The maintenance device 2 is used online, for example, by a maintenance person or an adjustment worker (also called a user), and manages the control logic 21 (an example of a control protection logic). Based on the control logic 21, the measurement monitoring control device 3 controls the operation of the control target equipment 9 (for example, plant equipment, plant equipment) constituting the plant. The maintenance device 2 can transmit the operation performed by the user to the control target device 9 in real time through the control logic 21 and can immediately display the execution result of the control logic 21 on the display unit C5 (see FIG. 2 described later). Display responsiveness is required. The maintenance device 2 constructs a control logic 21 that regulates the operation of the plant including the control target device 9 provided with the sensor group 8. The control logic 21 is created by the maintenance device 2 based on the measurement signals measured by the sensor group 8. The created control logic 21 is executed by the measurement monitoring control device 3.

  As described above, the operation of the plant is controlled based on the control logic 21. The program executed by the maintenance device 2 creates parameters used for plant control / protection logic and plant control, manages parameters, and the like. Further, the maintenance device 2 can acquire the plant state information for the specific signal identifier from the analysis device 7.

  The measurement monitoring control device 3 directly obtains a measurement signal output by the sensor group 8 measuring and controlling the device 9 to be controlled, and monitors and controls the operation of the plant. The value of the measurement signal is captured by the data recording device 6 as a measurement item. Output values to the plant monitored, controlled, and protected by the measurement monitoring control device 3 are obtained from the control logic 21.

  The process schedule creation management device 4 includes a schedule process schedule 41 (see FIG. 8 described later) in which the maintenance device 2 stores a schedule for a test or a work such as a test for performing a test operation or a periodic inspection of the plant. A result process table 42 (see FIG. 8 described later) for storing the work results is created.

  The sensor group 8 is a general term for various sensors attached to the control target device 9. The sensor group 8 includes other measurement monitoring and control devices such as sensors and one-loop instruments from which the measurement, monitoring and control device 3 generates signals for performing calculations necessary for monitoring, controlling, and protecting the plant. included. The sensor group 8 outputs, for example, a sensor value obtained by measuring a physical state such as a temperature, a pressure, and a flow rate of the control target device 9 to the measurement monitoring control device 3 as a measurement signal.

  The data recording device 6 acquires the data of the measurement signal (hereinafter, referred to as “recorded data”) collected from the sensor group 8 by the measurement monitoring control device 3 through the measurement monitoring network N. The recorded data includes information on plant operation monitoring and operation results (for example, turbine pressure, turbine speed, turbine temperature, etc.). Then, the data recording device 6 adds the additional information used by the analysis device 7 to search the recorded data, and stores the recorded data indicating the operation state of the control target device 9 in the recorded item 61. The recording data acquired by the data recording device 6 is stored in a recording item 61 and accumulated in a recording device database 60 provided in the data recording device 6. For example, when the measurement monitoring control device 3 executes the control logic 21, recording data including attribute information such as a signal identifier, a time series value of a logic operation value, and an acquisition time of the logic operation value is accumulated in the recording device database 60. Is done. Then, the maintenance device 2 or the data recording device 6 can select and set the recording items 71 stored in the analysis device 7 to the analysis device 7 using a user interface prepared in advance for each device. is there.

  The analysis device 7 analyzes the recorded data read from the data recording device 6 according to a predetermined purpose, and is used offline by a maintenance manager of the controlled device 9, for example. For this reason, it is necessary that the analysis device 7 can easily process the recorded data used for the analysis. The result of the analysis processing is displayed on, for example, a display unit C5 (see FIG. 2 described later) provided in the analysis device 7.

  The analysis device 7 includes an analysis device database 70 that stores specific recorded data. The analysis device 7 selects recording data to be used for analysis from the recording device database 60 through the measurement monitoring network N, and accumulates the recorded data in the analysis device database 70. The analysis device database 70 also includes a recording item 71 having the same configuration as the recording item 61 of the recording device database 60. In the analysis device database 70, not only the user of the analysis device 7 can set the recording items 71, but also the user of the data recording device 6 or the maintenance device 2 can set the recording items 71. In addition, the analysis device 7 can also register the recording data extracted from the data recording device 6 in the recording item 71 set by the data recording device 6 or the maintenance device 2.

  Further, the analysis device 7 stores the recorded data extracted from the data recording device 6 in the recording item 71 selected and set by the maintenance device 2 or the data recording device 6, and performs a predetermined analysis process. For example, the analysis device 7 accumulates recorded data in the recorded item 71 as history data during normal operation of the plant, and uses the accumulated recorded data to perform an analysis process for identifying the cause of a failure of the control target device 9 or a failure process. An analysis process or the like for detecting a sign is executed. At this time, the analysis device 7 searches the recording device database 60 using the plant state information as a key, and stores the acquired recording data to be analyzed in the analysis device database 70. Then, when a failure occurs in the control target device 9, recorded data of a plant state that is the same as or similar to the plant state at the time when the failure occurred in the past is searched from the analysis apparatus database 70 and acquired. When the analysis device 7 uses the recorded data in the analysis processing, the analysis device database 70 is searched from the analysis device database 70 as shown in FIG. The comparison sample data can be compared. Further, in the analysis processing for detecting a failure sign of the control target device 9, the recorded data during normal plant operation accumulated in the analysis device database 70 and the recording device database for the failure detection of the failure sign by the analysis device 7. 60 can be compared with the data acquired.

  The functions of the maintenance device 2, the data recording device 6, and the analysis device 7 may be realized by individual devices, respectively, or two or more functions may be realized by one device. Further, the maintenance device 2, the measurement monitoring control device 3, the process chart creation management device 4, the data recording device 6, and the analysis device 7 may be different from one user to another or the same.

  The operation monitoring terminal 5 monitors the operation of the plant including the control target device 9 through the measurement monitoring control device 3. When a failure occurs in the control target device 9, the operation monitoring terminal 5 alerts the occurrence of the failure that has occurred in the control target device 9, as shown in FIG. Is provided to the analysis device 7 through the measurement monitoring control device 3. Then, the analysis device 7 stores the information received from the operation monitoring terminal 5 in the analysis device database 70, and determines the same or similar failure cause of the failure that occurred in the past as the failure alerted by the operation monitoring terminal 5. It can be specified from the cause information.

Here, the recording data recorded in the recording device database 60 of the data recording device 6 will be described.
The recording items 61 stored in the recording device database 60 include, for example, a logical operation value of the control logic 21 and the like in addition to the measurement items A and B.
Here, attention is paid to the measurement item A. The measurement item A is composed of the recorded data 62. The recorded data 62 corresponding to the measurement item A includes additional information in addition to the signal identifier, the time-series value, the acquisition time, the attribute a, the attribute b, and the attribute c. The signal identifier is, for example, information used to identify a recorded item of a test performed on a plant. The time-series value is a value at the acquisition time of the measurement item A. The acquisition time is the time at which the measurement monitoring control device 3 acquires the measurement item A from the sensor group 8. The attribute is detailed information of the measurement item A. The additional information is a part of the attribute information provided along with the measurement item A.

  The additional information includes, for example, (1) information indicating a work in a plant such as a test (test), construction, curing, and the like, and (2) information indicating a type of a stop state such as a partial stop or a complete stop of equipment. . Further, the additional information includes, for example, (3) information indicating the type of operating state such as limited operation due to production amount, output limitation, partial load operation, in-house independent operation, etc., (4) replacement of turbine blades, soot blower Information indicating the type of equipment maintenance such as soot cleaning of the heat transfer surface is included. Further, the additional information includes, for example, (5) information indicating a start mode such as a cold start or a hot start of the plant, and (6) information indicating an abnormal state of the plant or the apparatus such as equipment failure or run-back operation. It is.

Further, the additional information includes a plant state information storage unit, a failure cause information storage unit, and a related signal information storage unit.
The plant state information storage unit stores plant state information indicating a plant state such as a plant event or a state, such as a test, a work such as a construction, a partial stop of the equipment, and a limited operation such as a production amount / output limit. Is done. The plant status information is used by the data recording device 6 as a key for searching and acquiring target recorded data from recorded data stored in the recording device database 60. By including the plant state information in the additional information, it is possible to identify different recording items for each plant state.

  The failure cause information storage unit stores measurement items that have occurred in the plant in the past and have caused a failure, and failure cause information indicating the cause of a failure that has occurred in the control target device 9 such as a device in the past. The failure cause information is obtained by storing information on the measurement item or device that caused the failure in the failure cause information storage unit for each failure.

  The related signal information storage unit stores, in a plan book such as a piping system diagram or a control system diagram to which a measurement item or a logic operation value belongs, a relation signal of a plurality of control target devices 9 related to each other such as a measurement item or a logic operation value. Relationship signal information to be represented is stored. Since the measurement items are related to the piping system and the control system as related signal information, the maintenance device 2 and the analysis device 7 can read the recording data related to the measurement items and the logic operation values from the data recording device 6. .

A recording item 71 having the same configuration as the recording item 61 stored in the recording device database 60 is configured in the analysis device database 70 of the analysis device 7.
For this reason, the plant state information is searched and acquired from the recorded data stored in the analysis apparatus database 70 by using the analysis apparatus 7 as a key, the recorded data having the same plant state as the plant state at the time when the recorded data to be analyzed is stored. Used to When the analysis device 7 uses the recorded data acquired from the data recording device 6 for the failure sign analysis, the analysis device 7 searches the analysis device database 70 and compares the acquired past recorded data with comparison sample data (described later). 10 (see FIG. 10).

  The failure cause information is used by the analysis device 7 as a key to search for and obtain the cause of the failure that has occurred in the past from the recorded data stored in the analysis device database 70. Then, when the analysis device 7 performs the cause identification analysis of the failure, it is possible to search and obtain the cause of the failure that has occurred in the past from the analysis device database 70.

  Further, the maintenance device 2 can also acquire the information included in the recording item 71 from the analysis device 7 or the information included in the recording item 61 from the data recording device 6. Although the maintenance device 2 does not have a database as shown in FIG. 1, it may have a maintenance device database like other devices, and the recording items may be configured in the maintenance device database. In the following description, when the recorded items 61 and 71 are not distinguished, they are described as “recorded items”.

Next, the hardware configuration of the computer C that configures each device of the data analysis system 1 will be described.
FIG. 2 is a block diagram illustrating a hardware configuration example of the computer C.

  The computer C is hardware used as a so-called computer. The computer C includes a CPU (Central Processing Unit) C1, a ROM (Read Only Memory) C2, and a RAM (Random Access Memory) C3 connected to a bus C4. Further, the computer C includes a display unit C5, an operation unit C6, a nonvolatile storage C7, and a network interface C8.

  The CPU C1 reads out a program code of software for realizing each function according to the present embodiment from the ROMC2 and executes it. In the RAM C3, variables, parameters, and the like generated during the arithmetic processing are temporarily written. The display unit C5 is, for example, a liquid crystal display monitor, and displays a result of a process performed by the computer C to a user. For example, a keyboard, a mouse, or the like is used for the operation unit C6, and the user can perform predetermined operation inputs and instructions. A user of the maintenance device 2, the data recording device 6, and the analysis device 7 displays a screen based on a predetermined user interface set for each device on the display unit C5, and receives an operation input by each user via the operation unit C6. .

As the nonvolatile storage C7, for example, a hard disk drive (HDD), a solid state drive (SSD), a flexible disk, an optical disk, a magneto-optical disk, a CD-ROM, a CD-R, a magnetic tape, a nonvolatile memory, and the like are used. Can be In the non-volatile storage C7, in addition to an OS (Operating System) and various parameters, a program for causing the computer C to function is recorded. For example, the recording device database 60 and the analysis device database 70 are configured in the nonvolatile storage C7. Note that the maintenance device 2 may configure the recording items in the nonvolatile storage C7.
For example, an NIC (Network Interface Card) or the like is used for the network interface C8. Each device can transmit and receive various data through the measurement monitoring network N, a dedicated transmission path, and the like through the network interface C8.

<Example of recording items>
Next, a configuration example of the recording items will be described.
FIG. 3 is an explanatory diagram showing a first configuration example of recording items.
As shown in the first configuration example of the recording items, the maintenance device 2, the data recording device 6, and the analysis device 7 have recording items that can register the plant state information at each acquisition time of the plant state information. In the plant status information storage unit of the measurement item A, the fact that the plant status information is the test A is stored in the collection item at each time of obtaining the time-series value.

FIG. 4 is an explanatory diagram showing a second configuration example of the recording items.
Also in the second configuration example of the recording items, the maintenance device 2, the data recording device 6, and the analysis device 7 have respective recording items that can register the plant state information at each acquisition time of the plant state information. However, in FIG. 4, the logic operation values of a plurality of measurement items are stored as time-series values as shown in measurement items A to C. For this reason, the test A is not stored for each measurement item as shown in FIG. 3, but the plant state information of a plurality of measurement items in the time zone in which the test A was performed is collectively recorded as the test A as the test item. Is stored.

  The maintenance device 2, the data recording device 6, and the analysis device 7 hold the plant state information for each unit of the plant state information. For example, when the plant status information is test A, the maintenance device 2, the data recording device 6, and the analysis device 7 include time zone information indicating a time zone in which the test A occurs, a signal identifier group used for the test A, and Are included in the collection items.

  Note that the recording item may include plant state information at the time when plant equipment maintenance or the like occurs. For example, the value of the measurement signal obtained from the boiler may change before and after cleaning the boiler. That is, the efficiency of the boiler is low before cleaning the boiler, but the efficiency of the boiler increases after cleaning the boiler. In such a case, the recorded data before and after the cleaning of the boiler and the recorded data after the cleaning are not continuous, and the recorded data extending before and after the cleaning cannot be used as an analysis target. For this reason, the recording items include information indicating that the collection conditions of the recording data related to the equipment maintenance of the plant have changed before and after the occurrence of the equipment maintenance.

  Further, there are a plurality of methods for registering the plant state information in the recording items of the analysis device 7. For example, a method in which the user of the maintenance device 2 manually inputs and registers the recording items of the analysis device 7, the analysis device 7 automatically reads the plant status information from another device that records the plant status information , There is a method of registering in the recording item. In addition, there is a method in which the analyzer 7 automatically reads registered information (for example, a signal identifier) and registers the information as a recording item.

<Example in which maintenance equipment acquires plant status information from analysis equipment>
FIG. 5 is an explanatory diagram illustrating an example of a process in which the maintenance device 2 acquires the plant state information from the analysis device 7 using the registered information.

  As a premise, it is assumed that the items included in the test A when the maintenance device 2 performed the test A on the plant in the past are registered in the analysis device database 70. The recording items of test A are registered in the analysis device database 70 by a method of manually inputting recording data by a user of the maintenance device 2 or a method of automatically reading information recorded by another device by the maintenance device 2. ing. The analysis device database 70 shown in FIG. 5 shows a table in which signal identifiers are columns and signal acquisition times are rows. From this table, for example, during 11:00 to 12:00, the signal identifiers ID-A, ID-B, ID-C, and ID-D (hereinafter, abbreviated as “signal identifiers ID-A to ID-D”). ) Indicates that the plant state of the plant that outputs the specific signal identified as “test A” is test A.

  When the maintenance device 2 performs the test A on the plant, the user of the maintenance device 2 uses the ID-A to ID-A including the test A as the plant status information as the signal identifier of the signal output by the plant used for the test A. The combination information of D is registered in the maintenance device 2 in advance. Then, the maintenance device 2 transmits the combination information of the signal identifier to the plant state search unit 72 of the analysis device 7. The signal identifier combination information includes, for example, signal identifiers ID-A to ID-D. The user of the maintenance device 2 may individually register the combination information of the signal identifiers for each recording item, or may collectively register the signal identifiers ID-A to ID-D registered in advance as a group.

  The analysis device 7 receives the combination information of the signal identifier from the maintenance device 2. Then, based on the combination information of the signal identifiers, the plant state search unit 72 included in the analysis device 7 extracts the plant state information common to the signal identifiers ID-A to ID-D from the analysis device database 70 at the same time. Search for. As shown in FIG. 5, the plant state search unit 72 acquires “test A” as plant state information.

  Then, the analysis device 7 transmits the “test A” acquired by the plant state search unit 72 to the maintenance device 2. As a result, the maintenance device 2 can acquire “test A” as the plant state information corresponding to the signal identifiers ID-A to ID-D.

The form in which the analysis device 7 records the failure cause information in the analysis device database 70 and the registration method may be the same as the form and the registration method in which the maintenance device 2 records the plant state information.
In addition, the mode in which the analysis device 7 records the related signal information in the analysis device database 70 may be a mode in which the related signal information is stored as an attribute for registering the related signal information for each item 71 to be recorded. The method by which the analysis device 7 registers the related signal information in the analysis device database 70 may be the same as the method by which the maintenance device 2 registers the plant state information.

<Example in which the analyzer registers recorded data in the recording item>
FIG. 6 is an explanatory diagram illustrating an example of a process in which a user of the analysis device 7 selects a signal required for analysis and registers the signal in the analysis device database 70 as recorded data.

  In order for the user of the analysis device 7 to register the recording items held by the maintenance device 2 or the data recording device 6 in the analysis device database 70, the measurement items to be registered and the control logic 21 of the logic operation value on the control logic 21. You need to know where you are. Conventionally, when registering a signal in a recording item, a user of the analysis device 7 investigates a signal identifier recorded in the recording item in the maintenance device 2 or a signal identifier common to the maintenance device 2 and the analysis device 7, The signal identifier was input by operating the analyzer 7.

  However, according to the present embodiment, the user of the analysis device 7 (mainly, the maintenance manager of the equipment) can acquire a signal necessary for analyzing the recorded data from the control logic 21 managed by the maintenance device 2, for example. The location can be selected. For example, the control logic 21 includes an input / output list 22, an operation block output terminal 23, a connection terminal 24 between logic sheets, and the like. The signal at the location selected by the user of the analyzer 7 is transmitted to the analyzer 7 via the measurement / monitoring network N shown in FIG. 1 or a transmission line (not shown) for directly connecting the maintenance device 2 to the analyzer 7. Is registered in the recording item 71.

  As described above, the user of the analysis device 7 can use the user interface prepared in advance for the analysis device 7 that the user is familiar with, so that it becomes easy to register the recording items of the data recording device 6 in the analysis device database 70. For this reason, the user of the analysis device 7 can use the recorded items set by the operator of the maintenance device 2 for the analysis.

<Example of analysis processing for detecting a failure sign>
Conventionally, a maintenance person or an adjustment worker of a plant using the maintenance device 2 has registered items to be recorded in the maintenance device 2 or the data recording device 6 in order to perform adjustment of a plant test run, operation confirmation of a control program, and the like. . Then, the plant trial operation was performed after the installation of the control target device 9. As the determination conditions for the pass / fail of the plant test operation, a threshold value set for a measured value or a calculated value, a start state or a stop state of a device, or a start timing or a stop timing of a device has been used. Then, the conventional maintenance personnel and adjustment workers discard the recorded data registered in the maintenance device 2 or the data recording device 6 after the plant trial operation is completed.

  However, when a plant maintenance person or an adjustment worker performs a test run of the plant or performs maintenance of the plant, various plant states occur in the plant. For this reason, the analysis device 7 according to the present embodiment also saves, in the analysis device database 70, the recording data of the recording items registered by the maintenance device 2 by the maintenance personnel and the adjustment operator of the plant. Accordingly, it is considered that the analysis device 7 can collect various kinds of recording data from the recording device database 60 than before, and use the collected recording data for various analyses.

Here, a process in which the analysis device 7 acquires recorded data when a specific plant state occurs will be described.
FIG. 7 is an explanatory diagram illustrating an example in which the analysis device 7 acquires a cause of a failure by using failure sign analysis target data.

  The failure sign analysis target data 73 to be analyzed by the analysis apparatus 7 for the failure sign of the device is composed of a plurality of recorded data collected in a time zone to be analyzed. The failure sign analysis target data 73 is a part of the recorded data stored in the analysis device database 70, and includes the recorded data A currently acquired by the analysis device 7 from the data recording device 6. The plant state of the recorded data A is “heat soak”. Here, in performing the analysis process for detecting the failure sign, the analysis device 7 needs the recorded data of the past date and time in the same plant state as the date and time when the recorded data was stored in the analysis device database 70. Become.

  For this reason, the plant state search unit 72 reads the event or state of the plant stored in the plant state information storage unit of the recorded data to be analyzed from the failure sign analysis target data 73. Then, the plant state search unit 72 searches the analysis device database 70 for past recorded data in which the plant state is “heat soak” based on the character string “heat soak” of the read plant state information. Then, the plant state search unit 72 provides the data of the “heat soak” extracted from the analysis device database 70 to the user of the analysis device 7. Thereby, the user of the analyzer 7 can grasp the date and time when the “heat soak” has occurred in the past.

  As described above, the data collected during the plant test run and the operation check test is stored in the analysis device database 70. Then, the analysis device 7 compares the recorded data stored in the analysis device database 70 with the recorded data acquired at the same test run or operation confirmation test to be performed in the future, and the analysis device 7 This can be used for analysis processing when detecting a failure sign of the device 9.

Conventionally, the user of the analysis device 7 investigates a time zone that matches the plant state to be analyzed from operation records such as operation status work results that are not based on the analysis device 7, and records data recorded in this time zone. It was taken out of the device 6 or the maintenance device 2.
However, the user of the analysis apparatus 7 according to the present embodiment reduces the work of investigating a time zone that matches the state of the plant to be analyzed, and is required to perform the analysis processing for detecting a failure sign. Data can be easily obtained.

<Example of processing for creating an actual process chart based on the scheduled process chart>
Next, a process in which the process chart creation management device 4 creates the work result chart 42 will be described.
FIG. 8 is an explanatory diagram illustrating an example of a process in which the process schedule creation management device 4 creates the performance process schedule 42.

  The process schedule creation management device 4 creates and holds a schedule process schedule 41 for tests, construction, and the like in advance in order to carry out operations such as plant test runs and periodic inspections in a planned and efficient manner. The scheduled process table 41 includes scheduled work dates and times, work items, and the like. The work items include plant state information. The user of the process chart creation management device 4 performing the plant trial operation operates the process chart creation management device 4 to select the scheduled process chart 41 including the items to be registered in the recording items 61 of the data recording device 6.

  The scheduled process table 41 selected by the operator is transmitted to the analysis device 7 via the measurement monitoring network N. Then, the analysis device 7 takes in the plant state information given to the scheduled process table 41 of the process table creation management device 4 as the plant state information of the analysis device 7. Then, the user of the analysis device 7 performs an operation for searching the recorded items 71 stored in the analysis device database 70 using each work item included in the scheduled process table 41 as a key.

  With this operation, the plant state search unit 72 of the analysis device 7 searches the analysis device database 70 using the work item or the work date and time as the key as the plant state information corresponding to the work included in the scheduled process table 41. At this time, test B is used as a key. Then, the plant state search unit 72 acquires, from the analysis device database 70, the measurement items A to C whose keys match the plant state information and the recorded data. After that, the analyzer 7 transmits the signal identifiers and the recorded data corresponding to the acquired measurement items A to C to the data recorder 6 together.

  The data recording device 6 registers the plant status information corresponding to the measurement items A to C received from the analysis device 7 in the recording item 61 of the data recording device 6. The user of the data recording device 6 does not need to operate the data recording device 6 to register the recording item 61 whose plant status information is test B in the recording device database 60. For this reason, the user of the data recording device 6 can reduce the amount of work for registering the recording items 61, which is necessary when each operation included in the scheduled process table 41 is performed. After that, the data recording device 6 transmits the recorded data recorded in the analysis device database 70 to the process chart creation management device 4 in accordance with the plant state information retrieved by the plant state retrieval unit 72.

  In addition, the analysis device 7 registers a recording item 71 including the test B acquired from the process chart creation management device 4 as a work item. For this reason, the user of the analysis device 7 can also reduce the amount of work for registering the recording items 71.

  Then, the analysis device 7 provides the results of the work items to the process chart creation management device 4 through the data recording device 6 when the maintenance device 2 performs a test or a work such as a plant test run or a periodic inspection. The process chart creation management device 4 creates an actual process chart 42 based on the recorded data passed from the data recording device 6. For example, after the test B is completed, the data recording device 6 transmits the recorded data including the execution date and time of the test B to the process chart creation management device 4. The process chart creation management device 4 creates the actual process chart 42 including the execution date and time corresponding to the work item of the test B based on the recorded data including the test date and time of the test B. Then, the process table creation management device 4 can easily manage the actual process of the test B using the actual process table 42. Further, the process chart creation management device 4 can also compare the scheduled process chart 41 with the actual process chart 42 to manage the deviation between the scheduled process and the actual process of the work.

<Example of analysis processing to identify the cause of failure>
Next, a description will be given of a process of specifying the cause of the failure of the control target device 9 that has occurred at present from the cause of the failure of the control target device 9 that has occurred in the past.
FIG. 9 is an explanatory diagram illustrating an example of an analysis process in which the analysis device 7 specifies a failure cause of the control target device 9.

  Usually, the measurement monitoring control device 3 monitors a failure or abnormality of the control target device 9 (hereinafter, abbreviated as “failure”). An alarm is issued on the alarm screen etc. together with the time when the abnormality occurred. The plant maintenance person specifies the location of the failure by an alarm issued to the operation monitoring terminal 5 or the monitoring function of the control logic 21 stored in the maintenance device 2 and then uses the recorded data related to the failure. Identify the cause of the failure.

  Then, each time a failure occurs in the operation of the plant, the data recording device 6 stores the failure location and the occurrence time in the failure cause information storage unit of the recorded data corresponding to the measurement item of the controlled device 9 that caused the failure. I do. For example, it is assumed that an A-pump failure is issued on the alarm screen of the operation monitoring terminal 5. When the cause of the A-pump failure is in the measurement item A, the measurement monitoring control device 3 stores the failure location information (A-pump failure) in the failure cause information storage section of the data recorded in the measurement item A held by the analysis device 7. , A pump failure occurrence time is stored.

When the analysis device 7 performs the analysis process for specifying the cause of the failure, the analysis device 7 refers to the failure cause information storage unit of the recorded item (the location where the failure occurred) to be analyzed. Then, the analysis device 7 specifies a failure cause of a failure that has occurred in the past that is the same as or similar to the failure alerted by the operation monitoring terminal 5 from the failure cause information stored in the failure cause information storage unit. Then, the analysis device 7 displays the identified cause of failure on the display unit C5. The user of the analysis device 7 can recognize the date and time of the occurrence of a failure that occurred in the past and the measurement item that caused the failure based on the display content of the display unit C5.
When the analysis target is the signal identifier ID-A, the analysis device 7 refers to the failure cause information storage unit of the recorded data of the measurement item A, and the measurement item A has caused the A pump failure in the past. It is also possible to recognize that.

  Conventionally, the cause of a failure that occurred in the past was managed separately from the analysis device 7. The user of the data recording device 6 refers to the management record of the data recording device 6 every time a failure occurs in the control target device 9 in order to investigate whether there is the same or similar cause as the occurred failure. Was. For this reason, it takes a lot of time to identify the cause of the failure reported on the alarm screen or the like of the operation monitoring terminal 5.

  However, according to the present embodiment, the user of the analysis device 7 executes an analysis process for specifying the cause of the failure using the user interface of the analysis device 7 which is familiar, and the occurrence of the failure occurring in the past is performed. The date and time and the measurement item that caused the failure can be obtained from the recorded items. For this reason, the work of the user of the analysis device 7 referring to the management record of the data recording device 6 can be reduced. Further, the user of the analysis device 7 does not need to have knowledge based on the experience of plant operation or maintenance, or the business personnel that the maintenance staff should have, such as the plant piping, the control target device 9, and the sensor configuration. It can be performed.

<Example of plant status determination process>
Next, a method of creating a criterion for determining whether a plant to be analyzed is in a normal state or in an abnormal state in an analysis process or the like for detecting a failure sign will be described.
FIG. 10 is an explanatory diagram illustrating an example of a process of creating comparison sample data.

The maintenance device 2 holds, in the recorded data, plant state information when any event or alarm occurs in the plant.
The analysis device 7 includes a comparison sample data creation unit 74 and a data comparison unit 75, in addition to the above-described plant state search unit 72.
The plant status search unit 72 searches the analysis device database 70 for past plant status information corresponding to the event notified from the maintenance device 2, and acquires recorded data including the past plant status information.

  The comparison sample data creation unit 74 creates comparison sample data based on the recorded data including the past plant state information searched by the plant state search unit 72. For example, the comparison sample data creation unit 74 creates comparison sample data using data recorded during a heat soak that occurred in the past. At this time, the comparison sample data creation unit 74 calculates the comparison sample data obtained by deriving the range of the minimum value and the maximum value of the recording data in each process step when a past heat soak occurs for each recording item and each process step. create. Thereafter, the comparison sample data creation unit 74 collects events and warnings generated at each process step during the heat soak from the recorded data stored in the analysis device 7.

  The data comparing unit 75 outputs a comparison result obtained by comparing the recorded data of the plant state notified from the maintenance device 2 with the comparison sample data. For example, when the recorded data at the time of the heat soak of the plant is to be analyzed, the plant state search unit 72 uses the recorded data at the time of the heat soak generated in the past (the “heat soak”) from the recorded data stored in the analysis device database 70. Reads recorded data with plant status information). The plant state search unit 72 may search a plurality of recorded data in accordance with the number of records of the plant state information to be analyzed, which is recorded in the analysis apparatus database 70.

  Then, the data comparing unit 75 compares the recorded data of the measurement items and the logic operation values related to the device to be analyzed of the plant of the recorded data to be analyzed with the recorded data collected by the analysis device 7, and compares the comparison result. Is output.

  As described above, the analysis apparatus 7 performs analysis processing for detecting a failure sign by comparing plant state information at the time of occurrence of an event in the plant (the control target device 9) with past plant state information, An analysis process for identifying the cause of the failure of the device 9 is performed. At this time, the analyzer 7 creates a criterion (sample data for comparison) as to whether the plant to be analyzed is in a normal state or in an abnormal state. Then, the analysis device 7 compares the recorded data of the measurement items and logic operation values related to the analysis target device of the plant of the recorded data to be analyzed with the recorded data collected by the analysis device 7.

Here, a display example of a comparison result by the data comparison unit 75 will be described.
FIG. 11 is an explanatory diagram showing a display example of the range of the minimum value and the maximum value of the comparison sample data derived for each process step, and the recorded data to be analyzed. FIG. 11 is a screen displayed on the display unit C5 of the analyzer 7.

  As shown in FIG. 11, the data comparison unit 75 compares the range of the minimum value (Min) and the maximum value (Max) of the comparison sample data and the recording data 76 (represented by a solid line) to be analyzed with the recording time t. Are displayed together on the display unit C5, and collation is performed. At this time, it can be determined that the recorded data within the range between the minimum value and the maximum value of the comparison sample data is normal, and the recorded data outside the range between the minimum value and the maximum value of the comparison sample data is abnormal. For example, the recorded data in process step 1 is normal because it is within the range between the minimum value and the maximum value of the comparison sample data. On the other hand, the recorded data 76 in the process step 3 is abnormal because it is outside the range between the minimum value and the maximum value of the comparison sample data.

  As described above, the permissible deviation set in the comparison sample data for the recorded data to be analyzed at each time is whether the plant state to be analyzed is in a normal state in the analysis processing for detecting a failure sign. It can be used as a criterion for determining whether an abnormal state exists. For this reason, the analysis device 7 does not depend on the threshold set for the measured value or the calculated value, the activated state or the stopped state of the control target device 9, or the design standard of the start timing or the stop timing of the control target device 9. It is possible to obtain a criterion based on the operation results of the plant.

  Further, the analysis device 7 displays the comparison sample data on the display unit C5 by superimposing the sample data for comparison with the recorded data to be analyzed, with matching the recording time. This makes it easy to determine whether an event or a warning has occurred on the recorded data to be analyzed at each time. Such matching processing can be used to determine whether the plant state to be analyzed is in a normal state or an abnormal state in the analysis processing for detecting a failure sign.

  According to the present embodiment, recorded data which was recorded only during the period required by plant maintenance and adjustment workers, such as adjustment of plant test operation and operation check of a control program, was discarded after the end of use. Is stored in the analysis device database 70. Then, the analyzer 7 creates the comparison sample data using the past recorded data, so that the comparison sample data can be used for comparison with the recorded data to be analyzed. Thereby, the accuracy of determining whether the plant state to be analyzed is normal or abnormal can be improved. It is also possible to expand the types of plant states to be analyzed (during testing, during startup, during normal operation, during shutdown, etc.).

  Then, the number of recorded data read from the analysis device database 70 by the analysis device 7 is plural, and the accuracy of determining whether the plant state is normal or abnormal can be improved as the number increases. Further, the plant state search unit 72 can efficiently search the plant state stored in the analysis device database 70 using the plant state information as a key.

  Note that the analysis device 7 may send comparison sample data and recorded data to the maintenance device 2 during plant operation as actual process data in each process of the plant operation. The maintenance device 2 may provide guidance to the operator of the maintenance device 2 by displaying the comparison sample data and the recorded data on the display unit C5 of the maintenance device 2 during the operation of the plant.

  Further, the comparison sample data can be used as one of the criteria for judging the quality of the result of the plant test run as a comparison target with the result data of the plant test run. For this reason, it is possible to use the recorded data stored in the analyzer 7 during normal operation of the plant as a comparison target with data obtained as a result of the plant test run.

  In addition, the analysis device 7 records, as plant state information, information on maintenance work in which the behavior of the plant operation changes depending on the work, such as replacement of a blade of a turbine of a plant or cleaning of soot on a heat transfer surface of a soot blower. To be added. Then, the analysis device 7 creates comparison sample data for each piece of information related to the maintenance work. As a result, the analysis device 7 displays the comparison sample data for each maintenance operation created in the same plant state on the display unit C5, thereby detecting an event that may be a cause of the deviation by the user of the analysis device 7. Can be given to.

<Example of registering items for each test>
FIG. 12 is an explanatory diagram illustrating an example in which the maintenance device 2 registers recording items for each test.

  Here, the recorded items of the maintenance device 2 may be different depending on the plant state. Further, a plurality of recording items may be registered in the analysis device 7. Then, the analysis device 7 can identify the plant state at the time of recording the recorded data to be analyzed, and can utilize the plant state of the recorded data to be analyzed. As an example of this, an example will be described in which the maintenance device 2 registers recording items from the analysis device 7 for each test for each plant state information.

  The maintenance device 2 according to the present embodiment registers a signal identifier in the analysis device 7 and acquires plant state information for each signal identifier searched by the analysis device 7 based on the signal identifier. For example, at the time of test A, the signal identifiers ID-A, ID-B, ID-C, and ID-D need to be registered in the recorded items of the maintenance device 2, and at the time of test B, the signal identifiers ID-C, ID-X , ID-Y, and ID-Z need to be registered in the recording items of the maintenance device 2. The signal identifiers ID-A, ID-B, and ID-D are registered as recording items during the test A period. After the test A is completed, the recorded items of the test A are deleted, and during the period of the test B, the signal identifiers ID-C, ID-X, ID-Y, and ID-Z are registered as the recorded items. The operation in which the maintenance device 2 registers the signal identifier in the analysis device 7 has been described with reference to FIG.

The recorded items of the test A and the test B are registered in the analytical device database 70 of the analytical device 7, and the recorded data in which the plant state information is added to each recorded item is accumulated in the analytical device database 70. Is done. Since the recorded data includes the plant state information, the plant state search unit 72 can search the plant state information. Then, the analysis device 7 transmits the plant state information corresponding to the signal identifier to the maintenance device 2. Thereby, the maintenance device 2 can register the plant state information corresponding to the signal identifier.
Note that the data recording device 6 can also perform the process in which the maintenance device 2 transmits the signal identifier to the analysis device 7 and acquires the plant state information corresponding to the signal identifier from the analysis device 7.

<Example of processing for registering related signal information in recorded items>
FIG. 13 is an explanatory diagram illustrating an example of a process of registering the related signal information in the recording item.

Conventionally, maintenance personnel and operators who can understand the contents of the piping system diagram D1, the control system diagram / control block diagram D2, and the like have registered related signal information in the recording items based on the knowledge.
Here, the piping system diagram D1 includes pressure, temperature, flow rate, detectors such as valves and pumps in the plant, arrangement of the control target device 9, connection of piping, branch information, and the like. A piping system diagram D1 shown in FIG. 13 shows a piping system of a pressure gauge, a control valve, and a flow meter.
The control system diagram / control block diagram D2 includes the control logic 21 of the plant and parameter information. The control system diagram / control block diagram D2 shown in FIG. 13 shows a state in which the opening degree and the like of the control valve A2 are adjusted based on the pressure A measured by the pressure gauge.

  2. Description of the Related Art Conventionally, a worker who has no maintenance knowledge of a plant can read related signal information related to a certain recorded item (for example, pressure A) from recorded data by using a piping system diagram D1, a control system diagram / control block diagram D2, and the like. Had to be checked and relevant signal information checked.

On the other hand, in the present embodiment, the operator operates the maintenance device 2 or the data recording device 6 and registers the pressure A as a measurement item to be monitored in the recording item of the maintenance device 2 or the data recording device 6. I do.
Then, the analysis device 7 reads the relation signal of the control target device 9 related to the measurement item stored in any of the recording items of the maintenance device 2 or the data recording device 6 from the relation signal information storage unit. It is possible to obtain from. Therefore, measurement items and logic operation values that are highly relevant to each of the recording items are registered in advance in the recording signal related signal information storage unit. For example, the maintenance device 2 or the data recording device 6 can measure the flow rate A1, the opening degree of the control valve A2, the opening command value of the control valve A2, the temperature A3, and other measurement items, the logic operation value, etc. Is previously registered and stored in the related signal information storage unit as related signal information. For this reason, when the pressure A is registered in the related signal information storage unit, the analysis device 7 determines the flow rate A1, the opening degree of the control valve A2, the opening command value of the control valve A2, the temperature A3, and the like related to the pressure A. Measurement items, logic operation values, and the like are read from the data recording device 6, and these values can be automatically registered in the recording items.

  Thereby, when registering the measurement item and the logic operation value to be monitored in the recording item, the analysis device 7 can easily register the recording item having high relevance to the measurement item and the logic operation value. As described above, even a user who does not have the knowledge based on the plant operation or maintenance experience or the business knowledge of the maintenance personnel such as the plant piping, the control target device 9, and the sensor configuration, can operate the analysis device 7 to change the plant. It is easy to register recording items necessary for monitoring and driving.

  In the data analysis system 1 according to the embodiment described above, the setting operation for selecting and registering the recording item 71 in the analysis device 7 can be performed from the data recording device 6 or the maintenance device 2. For this reason, it is possible to reduce the trouble that the user of each device conventionally has to select and set the recording items. Then, the maintenance device 2 or the data recording device 6 provides the recorded data to the analyzing device 7, so that the user of the analyzing device 7 can easily use the recorded data.

  Further, the recording items of the data recording device 6 can be used by the maintenance device 2, the data recording device 6, and the analysis device 7 for respective applications. In addition, the user of the maintenance device 2, the data recording device 6, and the analysis device 7 obtain necessary information from a target recording item by using a user interface prepared in advance in a familiar device in a usual manner. be able to. For this reason, it is possible to improve the convenience while reducing the work performed by each device.

  Further, the recorded data conventionally discarded after the end of the event can be stored in the analysis device database 70 and used for failure sign analysis performed by the analysis device 7. In addition, it is possible to broaden the types of plant states (testing, starting, normal operation, stopping, etc.) to be analyzed by the analysis device 7.

Further, the analysis device 7 can easily obtain recorded data required for performing the failure sign analysis.
Further, even if the worker does not have the knowledge based on the plant operation or maintenance experience, or the business knowledge such as the configuration of the plant piping, the control target device 9 and the sensor group 8, the related item of the relevant location is called when a failure occurs. be able to.

It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that various other applied examples and modified examples can be adopted without departing from the gist of the present invention described in the claims.
For example, in the above-described embodiment, the configurations of the apparatus and the system are described in detail and specifically in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the configurations described above. Further, a part of the configuration of the embodiment described here can be replaced with the configuration of another embodiment, and further, the configuration of one embodiment can be replaced with the configuration of another embodiment. It is also possible to add In addition, it is also possible to add, delete, or replace another configuration with respect to a part of the configuration of each embodiment.
In addition, control lines and information lines are shown as necessary for the description, and do not necessarily indicate all control lines and information lines on a product. In fact, it can be considered that almost all components are connected to each other.

  DESCRIPTION OF SYMBOLS 1 ... Data analysis system, 2 ... Maintenance device, 3 ... Measurement monitoring control device, 4 ... Process schedule creation management device, 5 ... Operation monitoring terminal, 6 ... Data recording device, 7 ... Analysis device, 8 ... Sensor group, 9 ... Control target equipment, 21: Control logic, 41: Scheduled process chart, 42: Actual process chart, 60: Recording device database, 61: Recording item, 62: Recording data, 70: Analysis device database, 71: Recording item, 72: plant state search unit, 73: failure sign analysis target data, 74: comparison sample data creation unit, 75: data comparison unit, D1: piping system diagram, D2: control system diagram / control block diagram

Claims (7)

A maintenance device that manages the creation and management of control protection logic and parameters for the controlled devices that make up the plant,
A data recording device that adds an additional information used for data search by the analysis device and saves a recording item of the data indicating an operation state of the controlled device,
The analysis device performs analysis of the data read from the data recording device according to a predetermined purpose,
The maintenance device or the data recording device performs the selection and setting of the recording items to be saved by the analysis device using a predetermined user interface set for each device to the analysis device,
The analyzer, the recording item selected and set by the maintenance device or the data recording device, have rows predetermined analysis process and stores the data extracted from the data acquisition device,
The data analysis system , wherein the maintenance device transmits a signal identifier indicating a specific signal to the analysis device, and acquires the additional information retrieved by the analysis device based on the signal identifier from the analysis device . The additional information has a plant state information storage unit that stores plant state information representing the plant state of the plant,
The maintenance device transmits the signal identifier to the analyzer, based on the plant state search unit said signal identifier of the analyzer, the said plant state information retrieved from the analysis device database for the analysis apparatus comprises The data analysis system according to claim 1, wherein the data analysis system acquires the data from an analysis device. Further, a schedule process table for storing a schedule of work to be performed on the plant, and a process table creation management device for creating a result process table for storing the work results of the work,
The plant state search unit, the plant state information corresponding to the work included in the scheduled process table to search from the database for the analysis device,
The data recording device passes the recorded data recorded in the analysis device database to the process table creation management device in accordance with the plant state information searched by the plant state search unit,
The data analysis system according to claim 2, wherein the process chart creation management device creates the performance process chart based on the recorded data passed from the data recording device. Further, an operation monitoring terminal that alerts the occurrence of a failure that has occurred in the control target device,
The additional information includes a failure cause information storage unit that stores failure cause information indicating a failure cause of a failure that has occurred in the control target device in the past,
The data analysis system according to claim 2, wherein the analysis device specifies the failure cause of the failure that has occurred in the past that is the same as or similar to the failure alerted by the operation monitoring terminal, from the failure cause information. The maintenance device holds the plant state information when an event occurs in the plant,
The analysis device,
The plant state search unit that searches the database for the analysis device for the past plant state information corresponding to the event notified from the maintenance device,
A comparison sample data creation unit that creates comparison sample data based on the past plant state information searched by the plant state search unit,
5. The data analysis system according to claim 4, further comprising: a data comparison unit that compares recorded data of the plant state notified from the maintenance device with the comparison sample data and outputs a comparison result. The data analysis system according to claim 5, wherein the maintenance device registers the signal identifier in the analysis device, and acquires plant state information for each signal identifier searched by the analysis device based on the signal identifier. The additional information has a related signal information storage unit that stores related signal information representing a related signal of the plurality of control target devices related to each other,
The data analysis according to claim 2, wherein the analysis device acquires the relation signal of the control target device related to the measurement item stored in the recording item from the relation signal information read from the relation signal information storage unit. system.

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