JP2005107687A - Plant monitor controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plant monitor controller for predicting the occurrence of defect of a plant and preventing the occurrence. <P>SOLUTION: The controller comprises an operation data server 18 for collecting plant data from each sensor attached to each plant equipment 11 to store the collected plant data at the normal time and at the defect occurrence time into a data storage device 19 and reads out the stored plant data; a display control device 15 for comparatively displaying the collected current plant data and the plant data at the defect occurrence time stored into the storage device 19; and a control calculator 14 for controlling the plant equipment 11 on the basis of the plant data collected from each sensor attached to the plant equipment. The data server 18 retrieves the plant data coinciding with the collected current plant data from the plant data at the defect occurrence time stored into the storage device 19 and transfer the retrieved plant data to the control device 15 at a speed higher than that of at collection time of the relevant plant data to display it. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a plant monitoring control device, and more particularly to a plant monitoring control device using plant history data.

  For example, in Patent Document 1, process data in a plant is stored not only when there is an abnormality, but also when equipment is operated, and data between two past time points can be compared. Shows a plant monitoring and control apparatus that can analyze and examine plant abnormalities in detail.

  Further, Patent Document 2 obtains a history of past process quantity data corresponding to the current variation pattern, and predicts whether there is an abnormality in the near future process quantity data based on the history of the past process quantity data. It is shown that, when it is predicted that there is an abnormality in the near future process amount data by the data prediction means and the data prediction means, an operation procedure for coping is output to the monitoring control panel.

In addition, in a conventional plant monitoring apparatus, all process data is normally stored periodically at intervals of about 1 minute by a history server or the like, and the stored process data is used for improving the operation efficiency of the plant. Has been.
JP 2003-029826 A JP-A-8-249046

  According to the technique described in Patent Document 1, data between two past time points, that is, data at the time of occurrence of malfunction and data at normal time are compared. This method is effective for investigating the cause of failure. However, it is difficult to prevent problems from occurring. Further, according to the technique described in Patent Literature 2, it is possible to predict the presence or absence of abnormality in near-future process amount data and display an operation procedure for coping. However, it is not intended to prevent and prevent the occurrence of a failure based on the prediction display result by displaying the background of the occurrence of the failure in advance.

  The history server performs plant performance calculation using plant data and stores the calculation result. However, this calculation result is a result of a predetermined calculation method. For example, when the calculation method is changed, a problem occurs in data continuity.

  The present invention has been made in view of these problems, and provides a plant monitoring and control apparatus capable of predicting the occurrence of problems in a plant and preventing the occurrence of such problems.

  In order to solve the above problems, the present invention employs the following means.

  Collects plant data from each sensor attached to each plant equipment, stores the collected plant data at the time of normality and failure, in the data storage device, and reads the stored plant data, and the collected current data Control the plant equipment based on the plant control data collected from each sensor attached to the plant equipment, and the display control device for comparing and displaying the plant data at the time of occurrence of trouble stored in the data storage device The operation data server includes a control computer, and searches the plant data corresponding to the collected current plant data from the plant data at the time of occurrence of failure stored in the data storage device, and the searched plant data is stored in the display control device. Faster than the generation speed when collecting the plant data Transfer and displays.

  Since the present invention has the above-described configuration, it is possible to predict the occurrence of a problem and prevent the occurrence. In addition, since plant data is stored directly, consistency of calculation results can be ensured.

  Hereinafter, the best embodiment will be described with reference to the accompanying drawings. FIG. 1 is a diagram illustrating a plant monitoring control device. In the figure, 10 is a plant monitoring and control device, 11 is plant equipment constituting a power plant, etc., 12a to 12e are detection data (plant data) of a plurality of sensors attached to the plant equipment, 13a and 13b are transmission lines, and 14 is It is a control computer and controls the plant equipment 11 based on the plant data collected from each sensor attached to the plant equipment 11. Reference numeral 15 denotes a display control device operated by an operator, which displays current plant data collected according to the operation of the operator or plant data stored in the data storage device 19, for example, when a malfunction occurs. Reference numerals 17a and 17b denote transmission lines constituting a network, for example.

  Reference numeral 18 denotes an operation data server that collects plant data 12 a to 12 e and stores the collected plant data 16 in the data storage device 19. Further, the stored plant data can be searched and the searched data can be transferred to the display control device 15 and displayed as history data 20. A data storage device 19 stores plant data. In addition, the said operation server 18 can be connected to the integrated monitoring apparatus (after-mentioned) which monitors another plant monitoring control apparatus, for example via a network.

  FIG. 2 is a diagram for explaining processing of the operation data server 18. First, in step 21, the plant data 16 is received via the network, and the received plant data is stored in the data storage device 19. In step 22, the received plant data is compared with the history data at the time of occurrence of a failure that has been received and stored in the storage device, and in step 23, it is determined whether or not a failure has occurred in the plant (for example, When the plant data coincides with the history data at the time of the occurrence of the failure that has been received and stored in the storage device, it is determined that the failure has occurred).

  If it is not determined that a failure has occurred, the process proceeds to step 24 where a time stamp is added to the plant data received in step 24 and stored in the data storage device 19. If it is determined that a failure has occurred, the process proceeds to step 25, and in step 25, the failure that has occurred, the value of the failure that has occurred (abnormal value), the failure occurrence time, and the trigger condition for the failure occurrence are acquired. In step 26, the acquired data is stored in the data storage device 19 as a file with a time stamp. The accumulated data can be searched based on the trigger condition.

  FIG. 3 is a diagram for explaining history data reproduction processing when a failure occurs. First, in step 21 shown in FIG. 2, after receiving the plant data 16 via the network, in step 31, the received plant data and the history data at the time of malfunction that has been received and stored in the storage device previously. Compared with (especially the history data immediately before the occurrence of the failure), in step 32, it is determined whether or not the received plant data matches the history data immediately before the occurrence of the failure. At the time of determination, it can be determined that the data match when the data substantially match over a predetermined period.

  If it is determined in step 32 that there is a mismatch, the process proceeds to step 33 to wait for reception of the next data. If it is determined in step 32 that the data match, the process proceeds to step 34 where the history data from the time of matching and the received plant data are transmitted to the display control means 15.

  The display control means 15 receives the history data and plant data in step 35, and displays the history data and plant data received in step 36 in the form of a system diagram or a trend graph. At this time, the display device displays that the history data at the time of the occurrence of a past failure stored in the storage device is displayed, and that the possibility that a failure will occur in the plant is high. Can do.

  In step 37, the operator can request to change the reproduction display speed of the history data. When the operator inputs a request to change the reproduction display speed of history data, the operation data server 18 changes the transmission interval of history data to be transmitted to the display control device 15 in step 38. For example, when the reproduction display speed is increased, the transmission data is thinned out. Thereby, the reproduction speed on the display control device 15 can be increased. As a result, the operator can display the trouble that has occurred in the past in advance of the occurrence of the expected current trouble.

  In step 37, the operator can refer to the history data by designating the trouble occurrence time or trouble event. In this case, when the operator requests the reproduction of the specified history data for the occurrence time or the failure event, the operation data server 18 receives the request and periodically transmits the history data that matches the request to the display control device. .

  FIG. 4 is a diagram illustrating a plant monitoring control device and an integrated monitoring device that monitors the plant monitoring control device. In the figure, reference numerals 10a to 10n denote plant monitoring control devices. Reference numeral 41 denotes a network, and reference numeral 42 denotes an integrated monitoring device that monitors a plurality of plant monitoring control devices 10a to 10n. In the figure, the same parts as those shown in FIG.

  The operation data server 18 is arranged for each plant monitoring control device. The operation data server 18 arranged for each plant monitoring control device is connected to the integrated monitoring device 42 via the network 41. Moreover, the display control apparatus arrange | positioned at each plant monitoring control apparatus 10a-10n stores data peculiar to power plants, such as a power system diagram, for example. When displaying the history data or the received plant data at the time of occurrence of trouble or normal, the data can be displayed together with the power system diagram and the like. At this time, by displaying the history data in comparison with the received plant data, it is possible to more easily predict or analyze the progress of the failure.

  Further, the integrated monitoring device 42 monitors the plurality of plant monitoring control devices 10a to 10n. For this reason, the power plant specific data such as the power system diagram is stored for each of the plant monitoring control devices 10a to 10n. Accordingly, the operator can monitor the plurality of plant monitoring control devices 10a to 10n via the integrated monitoring device 42. Further, by operating the integrated monitoring device 42, it is possible to reproduce trouble events and analyze plant data during normal operation for accident analysis or operator training.

  FIG. 5 is a diagram for explaining various calculation processes by the operation data server 18. In the data storage device 19, plant data is stored without being processed. That is, since the calculation result of plant data is not accumulated, various calculation processes can be performed using accumulated data before processing. Thereby, a plant can be easily evaluated using a new index.

  When various calculation processing requests are generated from the display control device 15 or the integrated monitoring device 42, first, in step 51, these calculation processing requests are received. In step 52, data necessary for the calculation processing request is retrieved with reference to the data storage device 19, and various calculation processes are performed in steps 53 and 54. Various calculation processes (performance calculation, auxiliary machine start-up count calculation, heat stress calculation, optimum operation calculation) performed in steps 53 and 54 can be configured as modules independent of the data structure, etc., so even during plant operation It can be easily added and changed. In step 55, the obtained calculation result is transmitted to the calculation processing request source. Thereby, an operator, a maintenance worker, or an operation planner can easily obtain necessary data.

  As described above, according to the present embodiment, it is detected that the current plant state follows the same transition as before the occurrence of a malfunction event that occurred in the past, and history data including past data immediately before the occurrence of the malfunction is obtained. Playback and display can be performed automatically. Further, history data can be reproduced and displayed at a high speed. Thus, the operator can observe the background of the occurrence of the failure prior to the actual occurrence of the failure. An alarm can be issued upon detection. As a result, the operator can specifically detect the possibility of the occurrence of a problem in advance, and can perform a driving operation to avoid this.

  In addition, in the calculation for performance calculation and preventive maintenance calculation, the consistency of the calculation result can be ensured, and the maintainability of the calculation service performed by the operation data server can be improved.

It is a figure explaining a plant monitoring control apparatus. It is a figure explaining the process of a driving | operation data server. It is a figure explaining the reproduction processing of the history data at the time of malfunction occurrence. It is a figure explaining the integrated monitoring apparatus which monitors a plant monitoring control apparatus and a plant monitoring control apparatus. It is a figure explaining the various calculation processes by the driving | operation data server.

Explanation of symbols

10, 10a-10n Plant monitoring and control device
DESCRIPTION OF SYMBOLS 11 Plant equipment 13a, 13b Transmission path 14 Control computer 15 Display control apparatus 17a, 17b Transmission path (network)
18 Operation data server 19 Data storage device 41 Network 42 Integrated monitoring device

Claims (4)

Collecting plant data from each sensor attached to each plant device, storing the collected plant data at the time of normality and failure in the data storage device, and an operation data server for reading out the stored plant data,
A display control device for displaying the collected current plant data and the plant data at the time of occurrence of trouble accumulated in the data storage device, and
A control computer for controlling plant equipment based on plant data collected from each sensor attached to the plant equipment,
The operation data server searches the plant data corresponding to the collected current plant data from the plant data at the time of occurrence of the failure stored in the data storage device, and the searched plant data is stored in the display control device of the plant data. A plant monitoring and control apparatus characterized by transferring and displaying at a higher speed than the generation speed at the time of collection. In the plant monitoring and control device according to claim 1,
The plant monitoring control device, wherein the operation data server adjusts a transfer speed when transferring the plant data searched under the instruction from the display control device to the display control device. In the plant monitoring and control device according to claim 1,
An integrated monitoring device connected to a plurality of the plant monitoring control devices via a network;
The integrated monitoring control device acquires plant data that matches the plant data collected by the operation data server of any plant monitoring control device from the operation data server of any plant monitoring control device and displays it on the display control device. A plant monitoring control device characterized by the above. In the plant monitoring control device according to claim 1 or claim 3,
The operation data server calculates the performance of plant equipment based on the accumulated plant data based on the calculation request input from the display control device or the integrated monitoring device, and the calculation result is the display control device or the integrated monitoring device. A plant monitoring control device, wherein

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