JP6162997B2 - Plant equipment management system and control method of plant equipment management system - Google Patents

Description

  The present invention relates to a plant equipment management system and a control method for a plant equipment management system.

  For example, power plants, chemical plants, and the like are equipped with a large number of various devices, and management (facility management) of these devices is required. Therefore, the manager manually registers information about devices used in various parts of the plant one by one in the database, and adds information obtained by periodic inspections to the database. Thereby, the static state in a certain period of the plant equipment can be managed.

  On the other hand, large and small abnormal states such as equipment failures, signal line breaks, pipe leaks, and aging of actuators are discovered by a patrol check by an operator or administrator, and maintenance work is performed. The possibility of finding a sign of abnormality depends on the skill level of the manager and the like, and an unskilled administrator may overlook the sign of abnormality.

  In view of this, there has been proposed a technique for analyzing the operating state of equipment and detecting the necessity and timing of maintenance replacement, a change in the state of the plant, and the presence or absence of abnormality (Patent Documents 1 to 3).

JP 2010-272068 A Japanese Patent Laid-Open No. 2007-025878 JP 2003-006288 A JP-A-4-102906

  The prior art does not disclose that a large number of devices are automatically registered in a database, and an administrator needs to manually register device information one by one. Therefore, it takes time to register a plurality of devices in the database for management, management efficiency is low, and usability is poor.

  Further, in the prior art, for example, when a signal from a certain device exceeds a predetermined threshold, it is determined that an abnormality has occurred, and necessary measures are taken. However, the operation state of the plant is complicated, and just because a certain signal changes greatly, it cannot always be determined that it is an abnormality of the equipment. Unless various measurement data such as flow rate, temperature, pressure, viscosity and the like are comprehensively considered, it is impossible to accurately determine whether the equipment is abnormal or possibly abnormal.

  The present invention has been made paying attention to the above problems, and an object of the present invention is to provide a plant equipment management system and a control method for the plant equipment management system that can improve management efficiency and usability. A further object of the present invention is to provide a plant equipment management system and a control method for the plant equipment management system that can improve the management efficiency and usability, and can accurately determine the presence or absence of an abnormal state.

In order to solve the above problems, a plant facility management system according to the present invention is a plant facility management system that manages a plurality of devices provided in a plant, and includes a plant control unit that controls the plurality of devices , The device is any one of a sensor, an actuator, and a lower controller located below the plant control unit, and the device group as the plurality of devices has at least one of each of the sensor, the actuator, and the lower controller. to which, and holds readably equipment information about the equipment, and acquires the device information from a plurality of devices generates facility information, the facility information management unit for storing the facility information storage unit, a plant control a operating data including data of a plurality of measuring points for a plurality of devices from the part, one of the plurality of devices Acquires operation data constitute data of the plurality of measurement points in the data of the measuring points on the data to another device of the measuring point relates to an apparatus, the difference between the stored statistical data in the statistical data storage unit and operating data Based on the change detection unit that detects the presence or absence of a predetermined change based on the detection, and the change detection unit detects the presence of the predetermined change, the operation data and the facility information stored in the facility information storage unit are associated and analyzed. An analysis unit.

  According to the present invention, the facility information management unit acquires device information from a plurality of devices, generates facility information, and stores the facility information in the facility information storage unit. For this reason, the present invention can improve the efficiency of management work and improve usability as compared with the case where an administrator or the like manually registers device information one by one.

  Furthermore, according to the present invention, when the presence of a predetermined change is detected from the difference between the operation data and the statistical data, the operation data and the facility information are analyzed in association with each other. Can be analyzed.

The block diagram which shows the whole structure of a plant equipment management system. Explanatory drawing which shows a mode that the apparatus information collected from the plant is collated with an instrumentation structure database. The flowchart which shows the process which registers equipment information. Explanatory drawing which shows the outline | summary of operation | movement of a plant equipment management system. The flowchart which shows the process which determines the presence or absence of an abnormal state, and diagnoses. Explanatory drawing which shows a mode that it concerns on 2nd Example and designates and exchanges the apparatus for replacement | exchange from an instrumentation block diagram. The flowchart which shows the process in the case of replacing | exchanging apparatuses.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present embodiment, as will be described later, the labor of inputting management data for plant facilities is reduced. Further, in the present embodiment, a predetermined change (change in tendency of operation data) is detected by comparing daily operation data with statistical data of past abnormalities, and the operation data and facility information are associated with each other and analyzed. it can. Thereby, it is possible to detect an abnormality of the facility at an early stage by using daily operation data without waiting for a periodic inspection. Furthermore, in the present embodiment, static facility information and dynamic operation data analysis can be linked, and a coping method can be presented to the administrator. Thereby, it is possible to cope with the abnormality at an early stage and suppress the propagation of the abnormality.

  FIG. 1 shows the overall configuration of the plant equipment management system 1. For example, a plurality of devices 2A to 2C are provided in a plant such as a power plant or a chemical plant. When the devices 2A to 2C are not particularly distinguished, they are called devices 2.

  Each device 2 is, for example, a sensor, an actuator, a controller, or the like. Specifically, a temperature sensor, a pressure sensor, a flow rate sensor, a viscosity sensor, a distance sensor, a mass sensor, a color sensor, an illuminance sensor, a gas sensor, a solenoid valve, air This includes type control valves, solenoids, heaters, refrigerators, motors, generators, transformers, turbines, boilers, pumps, compressors, stirrers, fans, filters, sequencers, control panels, controllers, recorders, etc. That is, each device 2 includes both main facilities and incidental facilities.

  Each device 2 includes a device information storage unit 3 for storing device information D1. The device information storage unit 3 includes, for example, a non-volatile memory such as a flash memory or a volatile memory backed up by a built-in power source. Device information D1 includes, for example, device name, model, device type, performance, life, vendor name, date of manufacture, date of operation, results of periodic inspection, acquired standards, information on related devices, etc. Can be configured. As information about related devices, for example, there is information for specifying a counterpart sensor, such as a transmissive sensor composed of a projector and a light receiver.

  The device information D1 does not have to include all the above-described items, and may include information (model number, identifier, network address, etc.) for specifying the device, information on the device type, performance, or specifications.

  Each device 2 can output the device information D1 stored in the device information storage unit 3 to the outside by wire or wireless. Alternatively, the external device can read the device information D1 from the device information storage unit 3 by wire or wirelessly. Accordingly, each device 2 includes a communication interface unit (not shown) for handling communication between the device information storage unit 3 and the external device.

  The plant may include a device that does not store device information or a device that does not include an interface for outputting the device information to the outside. Moreover, the plant equipment management system 1 does not need to manage all the apparatuses 2 which can output apparatus information, and can also manage only the apparatus 2 of the predetermined range according to the article objective etc.

  The plant control device 4, which is an example of a “plant control unit”, is communicably connected to each device 2 via a control-dedicated communication network, and controls the operation of the plant. For example, the plant control device 4 acquires a signal from a sensor group included in each device 2, calculates a control output based on a value indicated by the signal, and outputs the calculated control output to an actuator or controller included in each device 2. Output to.

  The equipment diagnosis device 5, which is an example of a “change detection unit”, is connected to the plant control device 4 via a communication network, and acquires the operation data of each device 2 from the plant control device 4 in real time. Diagnose the condition.

  The facility diagnosis apparatus 5 compares the operation data with the statistical data stored in the abnormality statistical database T2, and detects the presence or absence of a predetermined change. The predetermined change can be defined as, for example, “a trend change in operation data that predicts equipment abnormality”.

  In addition, the equipment diagnosis apparatus 5 does not necessarily need to acquire the operation data of each apparatus 2 from the plant control apparatus 4. The equipment diagnosis device 5 receives information (operation data, etc.) from each device 2 via another device (for example, a gateway device, a data logger device, etc.) that collects information from each device 2 via a wired or wireless communication network. May be obtained. Furthermore, the equipment diagnostic device 5 may be configured to obtain operation data of some devices 2 from the plant control device 4 and obtain operation data of other devices 2 from a communication gateway device or a data logger device.

  The abnormality statistics database T2 which is an example of the “statistical data storage unit” stores data related to past equipment abnormalities. As shown in the lower part of FIG. 5, the abnormality statistics database T2 manages statistical data including, for example, a classification number, an abnormality target, an abnormality content, a date and the like. The classification number is information for specifying the type of the abnormal state, and is an example of “abnormal type information”. The abnormality target is information for specifying the device 2 in which an abnormal state has occurred, and is an example of “abnormal device information”. The abnormal content is information indicating the content of the abnormal state. The date and time is information indicating the date and time when the abnormal state occurs. The statistical data may include items other than those.

  The equipment management device 6 manages the state of plant equipment. As will be described later, when the facility management apparatus 6 detects an abnormality in the facility, the facility management device 6 generates a diagnostic report including a countermeasure for the abnormality and presents it to the manager M.

  The facility information management device 7 collects device information D1 from each device 2 in the plant, generates facility information while collating the collected device information with the instrumentation configuration database T3, and installs the facility information as a “facility information storage unit”. Store in the information database T1. The facility information is generated, for example, by adding other items such as the result of periodic inspection and the date and time of periodic inspection in addition to the items included in the device information D1 shown in the lower part of FIG.

  FIG. 2 shows a configuration example of the instrumentation configuration database T3 and an example of an instrumentation configuration screen 100 corresponding to the instrumentation configuration database T3.

  The instrumentation configuration database T3 manages the instrumentation configuration of the plant. The instrumentation configuration database T3 manages, for example, device names, model numbers, positions, device information acquisition dates, and the like in association with each other. The device name is the name of the device 2. The model number is identification information for specifying the device 2. The position is an installation position of the device 2 in the plant. The device information acquisition date / time is the date / time when the device information D1 is acquired. In the instrumentation configuration database T3 of FIG. 2, information about a plurality of temperature sensors 107, 108, and 109 is shown as part of the instrumentation configuration.

  The instrumentation configuration screen 100 is created based on the contents of the instrumentation configuration database T3 and shows the instrumentation configuration of the plant. The screen 100 shows a simplified configuration of the plant to be managed.

  For example, the tank 101 contains a liquid material to be processed, and a burner 102 as a heating unit is provided at the bottom of the tank 101. An inflow pipe 102 and an outflow pipe 104 are connected to the tank 101. The inflow pipe 103 is provided with an inflow side valve 105, an inflow side temperature sensor 107, and an inflow side pressure sensor 110. The outflow pipe 104 is provided with an outflow side pressure sensor 111, an outflow side temperature sensor 108, and an outflow side valve 106. The tank 101 is provided with a tank temperature sensor 109. Each of these devices 105, 106, 107, 108, 109, 110, and 111 is a specific example of “device 2”, and is connected to the controller 112 via a control communication line. The controller 112 may be the plant control device 4 or an on-site controller located at a lower level of the plant control device 4. The tank 101 may be a boiler. In that case, for example, a pump, a turbine, a generator, a fan, or the like may be shown in the instrumentation configuration diagram.

  As described above, the instrumentation configuration database T3 shown on the upper side of FIG. 2 manages data related to the plant instrumentation configuration, and the instrumentation configuration screen 100 is created based on the stored contents of the instrumentation configuration database T3.

  In the plant, a plurality of devices of the same type are used. For example, in the example shown in the lower side of FIG. 2, two valves 105 and 106, three temperature sensors 107, 108, and 109, and two pressure sensors 110 and 111 are used. In the present embodiment, the model number and the installation position of each device are associated and managed in the instrumentation configuration database T3 so that the same type of device can be distinguished by the installation position in the plant.

  FIG. 3 is a flowchart showing a process of registering plant facility information in the facility information database T1. When the equipment information management apparatus 7 acquires the equipment information D1 from the equipment 2 in the plant (S10), it searches the instrumentation configuration database T3 using the model number included in the equipment information D1 as a search key (S11).

  The facility information management device 7 determines whether instrumentation configuration data (record) storing the same model number as that in the device information is registered in the instrumentation configuration database T3 (S12). If the facility information management device 7 determines that there is instrumentation configuration data having the same model number (S12: YES), the facility information management device 7 creates facility information from the contents of the received device information and registers it in the facility information database T1 (S13). .

  If the facility information management device 7 determines that instrumentation configuration data having the same model number has not been registered (S12: NO), the facility information management device 7 notifies the administrator that device information from an unregistered device has been acquired (S14). ). As a result, for example, a sensor or the like attached on site can be detected. Notification to the administrator is performed via a user interface unit 65 described later.

  As another method for distinguishing a plurality of similar devices, for example, a first method using wireless multi-hop communication, a second method using GPS (Global Positioning System), and communication with an access point A third method for specifying the position can be considered.

  In the first method, the device information is transmitted to the facility information management device 7 in order from the terminal device through the adjacent devices in a so-called bucket relay system. For example, the terminal first device transmits the device information of the first device to the adjacent second device. The second device adds the device information of the second device to the device information of the first device and transmits it to the adjacent third device. The third device adds the device information of the third device to the device information of the first device and the second device, and transmits it to the facility information management device 7. The facility information management device 7 analyzes the arrangement of the device information and grasps the positional relationship between the devices.

  In the second method, each device 2 has a built-in GPS circuit, and the device information D1 includes the position information of the device and transmits it to the facility information management device 7.

  In the third method, a plurality of access points are installed in the plant so that each device 2 enters the communication area of a plurality of access points. For the same device, the position of the device 2 can be specified within a predetermined error based on the difference between the device information reception timing at a certain access point and the device information reception timing at another access point.

  FIG. 4 is an explanatory diagram showing an outline of processing corresponding to a plant facility abnormality found in association with a system configuration. FIG. 5 is a flowchart showing the operation of each device. Hereinafter, processing of the plant equipment management system 1 will be described with reference to FIGS. 4 and 5.

  The plant control device 4 periodically collects operation data from each device 2. The equipment diagnosis apparatus 5 acquires operation data from the plant control apparatus 4 (S20), and acquires statistical data regarding past equipment abnormalities from the abnormality statistical database T2 (S21). The facility diagnosis apparatus 5 collates and analyzes the operation data and statistical data (S22), and determines whether there is a tendency change that predicts an abnormality of each facility 2 in the plant (S23).

  The operation data is composed of data of a plurality of measurement points obtained from sensors such as temperature, pressure, and flow rate. The operation data may include output signals to actuators such as valves and generators.

  The equipment diagnosis apparatus 5 analyzes the correlation between the data (operation data) of a plurality of related measurement points, and calculates the difference from the statistical data. The facility diagnosis apparatus 5 determines whether or not a trend change has occurred from the difference between the operation data and the statistical data (S23). When the equipment diagnosis apparatus 5 detects a trend change (predetermined change) that leads to equipment abnormality, the equipment diagnosis apparatus 5 outputs the detected abnormality classification number to the equipment management apparatus 6 (S24).

  The abnormality specifying unit 61 of the facility management apparatus 6 is a function that determines the occurrence of an abnormal event in the plant. The abnormality identification unit 61 searches the abnormality statistics database T2 based on the abnormality classification number received from the equipment diagnosis apparatus 5 (S25), and identifies the detected device and abnormality content (S26). The abnormality identification unit 61 notifies the abnormality analysis unit 62 of the identified abnormality target and abnormality content (S27).

  The abnormality analysis unit 62 of the facility management apparatus 6 analyzes the range and the degree of influence that the detected abnormality affects. The abnormality analysis unit 62 refers to the facility information database T1 based on the detected abnormality content and abnormality target (S28), and analyzes which facility (including equipment) in the plant affects the abnormality detected this time. (S29).

  The coping method derivation unit 63 of the facility management apparatus 6 searches the coping method database T4 that stores the countermeasure method at the time of the past occurrence of abnormality using the influence range of the abnormality detected this time as a search key (S30). Thereby, the coping method deriving unit 63 acquires a coping method for coping with the detected abnormality in advance. For example, the handling method database T4 manages the type of abnormality and the handling method for the abnormality in association with each other.

  The report output unit 64 of the facility management device 6 creates a diagnostic report including the detected abnormality and its contents, information on related (possible spillover) facilities and devices, possible countermeasures, etc. ( S31).

  The report output unit 64 outputs a diagnosis report from the user interface unit 65 of the facility management apparatus 6 (S31), thereby notifying the administrator. The user interface unit 6 may be a display device, a speaker, a printer, or the like that the facility management apparatus 6 has, or a personal computer, a portable information terminal, a mobile phone, or the like that is connected to the facility management apparatus 6 so as to be communicable. Also good.

  Since this embodiment configured as described above has the above-described configuration, the following effects can be obtained. In the present embodiment, equipment information D1 is collected from each equipment 2 of the plant to generate equipment information, which is managed by the equipment information database T1. Therefore, the efficiency of the registration work can be increased and the usability is improved as compared with the case where the administrator or the like manually registers information about each device in the database one by one.

  In this embodiment, when a change in the trend of the operation data is detected from the difference between the operation data and the statistical data, the operation data is compared with the statistical data and the facility information to analyze the range and degree of influence of the abnormality. Therefore, compared with the case where it analyzes based on abnormality of each sensor output, the execution frequency of an abnormality specific process and an analysis process (S25-S29) can be reduced, and the precision can be raised.

  Since various process quantities are complicatedly related to the plant, it cannot be determined that there is a possibility that an abnormality may occur only when a certain sensor output momentarily indicates a value far from the normal value. On the contrary, when a plurality of sensor outputs show a value slightly different from the normal value, it is within an error range and cannot be ignored as an occurrence of an abnormality. In contrast, in this embodiment, when the multidimensional operation data including the data of a plurality of measurement points is compared with the statistical data, and the operation data shows a trend change, the operation data, the statistical data, and the equipment Analyze abnormal conditions by collating information. Therefore, it is possible to suppress unnecessary processing (S25 to S29), and to perform highly accurate analysis only when necessary.

  In the present embodiment, the facility management device 6 and the facility diagnosis device 5 can be combined to detect an abnormality in the facility in an effective and efficient manner. By combining the facility diagnosis apparatus 5 with an application other than abnormality detection, it is possible to perform detailed facility management that cannot be realized only by conventional static facility management of only facility (equipment) information.

  For example, plant measurement point data (operation data) relating to the combustion state of the boiler and equipment data (equipment information D1) relating to the boiler are combined and analyzed. Accordingly, it is possible to analyze in real time whether or not the combustion efficiency is improved by improving or improving which device. In this way, the operation data (including measurement point data) related to the performance of the plant equipment is linked with the information in the equipment information database T1, thereby enabling management including simple equipment and equipment management to more dynamic equipment performance status. It becomes possible.

  Such dynamic equipment management not only reduces the burden on plant operators and maintenance personnel, but also enables managers who are in a position to operate and manage the entire plant to use the system 1 of this embodiment. Equipment operation management can be optimized.

  Moreover, it becomes possible to carry out analysis, improvement proposals, etc. that lead to efficiency improvement of each facility in a timely manner based on operation data and device information regardless of the diagnosis of equipment abnormality.

  For example, by detecting changes in the boiler feed water flow rate, etc., it is possible to detect signs of tube leaks, and to reduce the amount of fuel consumption and emissions of environmentally hazardous substances based on the results of adjusting the damper opening and combustion results. It may be possible to provide a method for operating the device to be operated. Such abnormal sign detection and efficiency improvement by real-time plant operation data analysis is considered difficult to carry out by conventional periodic equipment inspection and monitoring. By combining equipment diagnosis (analysis) technology, timely, effective and efficient equipment operation management becomes possible.

  A second embodiment will be described with reference to FIGS. Since this embodiment corresponds to a modification of the first embodiment, the description will focus on differences from the first embodiment. In the present embodiment, a device to be exchanged is designated on the instrumentation configuration diagram 100, and the facility information database T1 is updated with device information from the newly installed device.

  FIG. 6 is an explanatory diagram showing the instrumentation configuration database T3 and the instrumentation configuration diagram 100. The equipment 2 in the plant is appropriately replaced, for example, in order to cope with aging deterioration or to improve measurement accuracy.

  The administrator designates a device to be replaced (here, the tank temperature sensor 109) on the instrumentation configuration diagram 100. The designated replacement target device may be changed in display form, for example, by blinking so that it can be distinguished from other devices. When the administrator designates a device to be exchanged on the instrumentation configuration diagram 100, instrumentation configuration data corresponding to the designated device is specified in the instrumentation configuration database T3. For example, a replacement target flag column indicating that a replacement is to be performed is provided in the instrumentation configuration database T3, and the replacement target flag of the device designated by the administrator is set to 1.

  FIG. 7 is a flowchart showing a process for updating the facility information database T1 at the time of device replacement. The facility information management device 7 specifies the replacement target device designated by the administrator on the instrumentation configuration diagram 100 (S40), and acquires the device information D1 from the new device installed in the plant (S41).

  The facility information management device 7 searches the instrumentation configuration data of the device identified in step S40 using the device type included in the acquired device information D1 as a search key (S42), and determines whether the device types match. (S43).

  If the facility information management device 7 determines that the device type of the device designated in advance as the replacement target matches the device type in the device information newly acquired from the plant (S43: YES), the newly acquired device Equipment information is generated from the information, and the equipment information database T1 is updated (S44). That is, the device information acquired from the plant is treated as device information from a new device introduced instead of the device specified in the instrumentation configuration diagram 100.

  On the other hand, if the facility information management device 7 determines that the device type of the newly acquired device information does not match the type of the device specified as the replacement target (S43: NO), the facility information management device 7 is directed to the administrator. An error is notified (S45).

  Configuring this embodiment like this also achieves the same operational effects as the first embodiment. Furthermore, in this embodiment, when the equipment in the plant is replaced, the facility information database T1 can be easily updated, and the usability during the plant maintenance work is improved.

  In addition, this invention is not limited to embodiment mentioned above. A person skilled in the art can make various additions and changes within the scope of the present invention.

  1: plant equipment management system, 2: equipment, 3: equipment information storage unit, 4: plant control device, 5: equipment diagnosis device, 6: equipment management device, 7: equipment information management device, 61: abnormality identification unit, 62 : Abnormality analysis unit, 63: coping method deriving unit, 64: report output unit, 65: user interface unit, D1: equipment information, T1: facility information database, T2: abnormality statistics database, T3: instrumentation configuration database, T4: Database

Claims (7)

A plant equipment management system for managing a plurality of devices provided in a plant,
A plant control unit for controlling the plurality of devices;
The plurality of devices are any one of a sensor, an actuator, and a subordinate controller positioned below the plant control unit, and the device group that is the plurality of devices includes at least one of the sensor, the actuator, and the subordinate controller. One has higher and holds readably equipment information about the equipment,
A facility information management unit that acquires the device information from the plurality of devices, generates facility information, and stores the facility information in a facility information storage unit;
Operation data including data of a plurality of measurement points related to the plurality of devices from the plant control unit, and data of measurement points related to one device of the plurality of devices and data of measurement points related to other devices A change detection unit that acquires operation data that constitutes data of the plurality of measurement points, and detects presence or absence of a predetermined change based on a difference between the operation data and statistical data stored in the statistical data storage unit;
When the change detection unit detects the presence of the predetermined change, an analysis unit that associates and analyzes the operation data and the facility information stored in the facility information storage unit;
A plant equipment management system comprising: The statistical data stored in the statistical data storage unit includes abnormality type information for specifying the type of abnormal state, abnormal device information for specifying a device in which the abnormal state has occurred, and abnormal content indicating the content of the abnormal state It is configured by associating with information,
Between the change detection unit and the analysis unit, an abnormality identification unit that identifies an abnormal state is provided,
The change detection unit, when detecting the presence of the predetermined change, outputs the abnormality type information of the statistical data corresponding to the predetermined change to the abnormality specifying unit,
The abnormality identification unit searches the statistical data based on the abnormality type information received from the change detection unit, thereby causing a device in which an abnormal state causing the predetermined change occurs and the content of the abnormal state And output to the analysis unit,
The analysis unit analyzes the operation data and the facility information in association with each other based on the information acquired from the abnormality specifying unit.
The plant equipment management system according to claim 1. A coping method storage unit that associates and stores an abnormal state that occurred in the past and a coping method for the abnormal state;
A coping method deriving unit for deriving a coping method corresponding to the abnormal state by searching for information stored in the coping method storage unit according to an analysis result of the analysis unit;
The plant equipment management system according to claim 2. Creates report information including the content and type of the abnormal state specified by the abnormality specifying unit, the analysis result of the analyzing unit, and the coping method derived by the coping method deriving unit, and outputs it via the user interface unit A report output unit
The plant equipment management system according to claim 3. The facility information management unit holds instrumentation configuration information for managing the positions of the plurality of devices arranged in the plant and identification information for identifying the plurality of devices in association with each other,
The device information includes identification information for identifying the device,
The facility information management unit extracts the identification information from the device information acquired from the plurality of devices, and collates the extracted identification information with the identification information included in the instrumentation configuration information. Identify where the acquired equipment information is equipment information from the equipment installed in the plant,
The plant equipment management system as described in any one of Claims 1-4. When the equipment to be replaced is specified on the screen created based on the instrumentation configuration information, the facility information management unit determines that the acquired equipment information is equipment information related to the exchanged equipment, and Update equipment information,
The plant equipment management system according to claim 5. A method for controlling a plant equipment management system for managing a plurality of devices provided in a plant,
The plurality of devices are any one of a sensor, an actuator, and a subordinate controller located in a lower level of a plant control unit that controls the plurality of devices, and the device group that is the plurality of devices includes the sensor, the actuator, and the subordinate Have at least one of each of the controllers , and hold device information related to the device in a readable manner,
A facility information management step of acquiring the device information from the plurality of devices to generate facility information and storing it in a facility information storage unit,
A operating data including data of a plurality of measuring points for the plurality of devices before Kipu plant control unit, the data of the measurement points for the data to another device of the measuring point for one of the devices of the plurality of devices And an operation data acquisition step for acquiring operation data comprising data of the plurality of measurement points .
A statistical data acquisition step of acquiring statistical data stored in the statistical data storage unit;
A change detecting step for detecting presence or absence of a predetermined change based on a difference between the operation data and the statistical data;
When detecting the presence of the predetermined change, an analysis step of analyzing the operation data and the facility information in association with each other;
For controlling the plant equipment management system.

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