JP2015230325A - Plant operation training simulator, method and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plant operation training simulation technique capable of easily and objectively executing verification confirmation of simulation precision.SOLUTION: A plant operation training simulator comprises: a file storage section 26 performing file retention of simulation data being generated on the basis of an operation signal, a model signal 25 and an arithmetic logic 24 transmitted from a simulation operation panel 41 and reproducing an operational state of a plant; a simulation file extraction section 31 extracting an event simulation file 32 from the simulation data; an acquisition section 13 acquiring reference data recorded with an operational state of an actual plant; a reference file extraction section 14 extracting an event reference file 33 from the reference data; an event data collection section 36 collecting the simulation data registered in the event simulation file 32 and the reference data registered in the event reference file 33 in time series; and an event list display section 15 displaying the simulation data and the reference data collected as event data in time series in a comparable manner along a temporal axis.

Description

  Embodiments described herein relate generally to a plant operation training simulation technique for training a plant operator.

The plant operation training simulation device is a training device that simulates the operation control of a power plant, etc., and process signals of boilers, turbines, generators, etc. are virtually realized by a data processor, and is the same as when operating in an actual power plant The plant can be operated with a sense.
By using this simulation apparatus, training corresponding to accidents that can hardly be experienced in actual driving can be repeated, so that training of operators can be carried out effectively in a short period of time.

Since the plant operation training simulation apparatus is constructed by converting control software of an actual plant, the simulation result has reproducibility with respect to the actual behavior of the plant.
On the other hand, regarding the steady state / normal operation / abnormal performance of the plant, the accuracy evaluation of the reproducibility of the simulation result and the actual behavior is required more strictly, and further it is required to submit the evaluation result It has become to.

JP-A-8-137377 JP 2011-107455 A

The accuracy verification of the conventional simulation device is performed by transferring the reference data of the actual plant in the event of interest and the simulation data, which is the simulation result, to a PC terminal that has started general-purpose spreadsheet software, and manually overlaying the graph etc. I was making a report.
For this reason, it took a long time to work on accuracy verification, and there was a problem to be considered about the validity of the report creation method.

  The embodiment of the present invention has been made in view of such circumstances, and an object of the present invention is to provide a plant operation training simulation technique capable of simply and objectively performing verification confirmation of simulation accuracy.

  In the plant operation training simulation apparatus according to the embodiment, the file storage that stores the simulation data that is created based on the operation signal transmitted from the simulation operation panel, the preset model signal, and the arithmetic logic and that reproduces the operation state of the plant as a file A simulation file extraction unit that extracts an event simulation file from the simulation data stored in the file, an acquisition unit that acquires reference data that records an operating state of an actual plant, and an event reference from the acquired reference data A reference file extracting unit for extracting a file, an event data collecting unit for collecting the simulated data registered in the event simulated file and the reference data registered in the event reference file in time series, and time series as event data Collected simulation data and reference data An event list display unit that comparably displayed along the axis of time, characterized in that it comprises a.

  According to an embodiment of the present invention, a plant operation training simulation technique capable of simply and objectively performing verification confirmation of simulation accuracy is provided.

The block diagram which shows the plant operation training simulation apparatus which concerns on embodiment of this invention. The figure which shows the displayed event list. The figure which shows the displayed trend graph. The figure showing the attribute of trend data related to event data. (A) Explanatory drawing of trend data (reference data) of actual plant and trend data (simulated data) of simulation device, (B) Explanatory drawing of arithmetic logic. The figure which shows the output example of the verification confirmation report of simulation accuracy. The flowchart explaining operation | movement of the plant operation training simulation apparatus which concerns on embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in FIG. 1, the plant operation training simulation apparatus according to the embodiment is created based on the operation signal transmitted from the simulated operation panel 41, the preset model signal 25 and the arithmetic logic 24, and reproduces the operation state of the plant. A file storage unit 26 for storing simulated data to be filed, a simulated file extraction unit 31 for extracting the event simulation file 32 from the simulated data stored in the file, and an acquisition unit for acquiring reference data recording the operating state of the actual plant 13, the reference file extraction unit 14 that extracts the event reference file 33 from the acquired reference data, the simulated data registered in the event simulated file 32, and the reference data registered in the event reference file 33 are collected in time series. Event data collection unit 36 and time data collected as event data An event list display section 15 that comparably displayed along the time axis as shown in FIG. 2 the simulated data and the reference data is provided with a.

  Further, in the plant operation training simulation apparatus, the simulation file extraction unit 31 extracts the trend simulation file 34 separately from the event simulation file 32, and the reference file extraction unit 14 extracts the trend reference file separately from the event reference file 33. 35, and a trend data collection unit 37 that collects simulation data registered in the trend simulation file 34 and reference data registered in the trend reference file 35 in time series, and simulations collected in time series as trend data As shown in FIG. 3, a trend graph display unit 16 that displays the data and the reference data so as to be comparable along the time axis is provided.

The hardware configuration of the plant operation training simulation apparatus (FIG. 1) according to the embodiment includes an instructor terminal 10, a simulator body 20, a simulation operation panel 41, and a monitor 42.
In addition, the plant operation training simulation apparatus can also take the structure which abbreviate | omitted the trend graph display part 16, the trend simulation file 34, the trend reference file 35, and the trend data collection part 37. FIG.

The simulated operation panel 41 simulates a control panel of an actual plant, and outputs an operation signal for changing the control state (pump output, valve opening / closing, etc.) of a plant control device (for example, a pump or a valve).
This operation signal is output to the signal transmission / reception unit 27 of the simulator body 20 in synchronization with an operation event of a trainee such as a pump activation operation, a valve full opening operation, or a combination thereof.
The operation signal of the simulated operation panel 41 is given time information reproduced by the simulation and stored in the file storage unit 26 as simulated data.

The monitor 42 is used to monitor trend information of process signals (for example, temperature, pressure, and flow rate) simulated by the simulator body 20 by operating the simulated operation panel 41, the control state of the plant component equipment, a warning signal, and the like. indicate.
The simulated operation panel 41 and the monitor 42 are physically connected to the simulator body 20 via the signal transmission / reception unit 27 and transmit / receive various signals.

The instructor terminal 10 controls the whole simulation scenario such as start / stop of plant operation training and initial state setting / saving based on the request of the instructor.
The reference data acquisition unit 13 acquires, as reference data, data that records the operation state of the plant in the past event.
The reference file extraction unit 14 extracts the acquired reference data by dividing it into an event reference file 33 and a trend reference file 35 and transfers them to the simulator body 20.

The training condition setting unit 11 outputs training conditions set in advance to virtually realize a malfunction that simulates a plant accident to the simulator body 20.
The simulator main body 20 simulates the dynamic characteristics of the plant achieved based on the operation executed on the simulated operation panel 41 with respect to the operating conditions given from the instructor terminal 10 by a computer.
The dynamic characteristics of the plant are determined by monitoring trends such as process signals output from various sensors and the like provided in equipment constituting the plant and displayed on the monitor 42.

The simulator control unit 22 causes the simulation execution unit 23 to execute a program based on the training conditions and the initial state file 21 received from the instructor terminal 10.
The model signal 25 is data that simulates a process signal from a plant component device at the time of occurrence of an abnormality or accident (including natural disaster) for training, and is created in advance and registered in the simulation execution unit 23.
Alternatively, a function for generating data of the model signal 25 is registered in the simulation execution unit 23.

The model signal 25 is given time information reproduced by the simulation, and is stored in the file storage unit 26 as simulated data.
The simulated data of the model signal 25 is applied to the trend information of the process signal displayed on the monitor 42 adjacent to the simulated operation panel 41 or applied to the display of the trend graph display unit 16 of the instructor terminal 10. (See FIGS. 3 and 5A).

In many cases, the arithmetic logic 24 is constructed by converting the control logic of the actual plant.
The arithmetic logic 24 includes a plurality of execution units illustrated in FIG. 5B, and each execution unit includes a plurality of logic circuits.
The format of the arithmetic logic 24 is expressed by the types of circuit elements (OR circuit, AND circuit, NOT circuit) constituting the execution unit, and connection information between these circuit elements.

Then, depending on the input value of the arithmetic logic 24 and the connection relation of each circuit, the state value of the circuit element and the output value of the execution unit are uniquely determined.
In the initial state file 21, in order to set the initial state of the simulation execution unit 23, state values for all circuit elements are initially registered.

Here, the input value of the arithmetic logic 24 is a simulated data value of the model signal 25 (process signal such as pressure, flow rate, temperature, etc.), an operation signal value of the simulated operation panel 41, or another execution unit. Output value.
Further, the output value of the arithmetic logic 24 is a control signal value for setting each control state (pump output, valve opening / closing, etc.) of the plant constituent devices (for example, pumps, valves, etc.), It may be an arithmetic processing value, an ON / OFF signal of a warning light on the simulated operation panel 41, or an input value of another execution unit.

  The output value of the arithmetic logic 24 is stored in the file storage unit 26 as simulated data, and then applied to the display of the event list display unit 15 of the instructor terminal 10 as event data (see FIGS. 2 and 4).

The comparison data selection unit 12 sets a group in which attributes of simulated data and reference data to be compared are selected in advance.
That is, the data attributes that can be displayed on the event list display unit 15 (FIG. 2) and the trend graph display unit 16 (FIG. 3) are several thousand types in the nuclear power plant.
In other words, the simulated data file stored in the storage unit 26 includes thousands of types of data attributes. For this reason, it is necessary to create a group in which the data attribute of interest is selected in advance.

When one of a plurality of groups is transmitted from the comparison data selection unit 12 to the comparison data designating unit 29 of the simulator body 20, the corresponding data attribute is selected from a large number registered in the attribute information table 28. It is specified.
Then, based on the data attribute designated by the comparison data designation unit 29, an event or trend simulation file is extracted by the extraction unit 31.

  The event simulation file 32 is obtained by sequentially extracting and registering event data from the simulation data stored in the file storage unit 26 when the simulation is started. The event data extracted from the file storage unit 26 is stored by overwriting the old one with the capacity upper limit of the event simulation file 32.

The event data collection unit 36 collects the simulation data registered in the event simulation file 32 and the reference data registered in the event reference file 33 in time series.
Note that the synchronization between the time series of the simulated data and the time series of the reference data can be performed based on the occurrence time of a predetermined event.

As shown in FIG. 2, the event list display unit 15 of the instructor terminal 10 displays the attributes of the simulated data and the reference data collected in time series as event data so that they can be compared along the time axis.
The time series of the simulated data is synchronized with “18:25:12 regulating valve A [fully open] ON” in the event data (reference data) recorded in the actual plant as a reference time.
As a result of comparing the reference data and the simulated data up to [19:25:35 B inlet flow rate low OFF], the event of “regulating valve B [fully open] ON” is delayed, and “C outlet flow rate [low] ON” The event turned out to be advancing.

Thereby, in the verification check of simulation accuracy, the deviation from the behavior of the actual plant can be easily and objectively detected while performing the simulation.
Based on the verification confirmation result, the arithmetic logic 24 and / or the model signal 25 of the simulation execution unit 23 are corrected to eliminate the “delay” and “advance” of the reference data of the event to be compared and the simulation data.

  The trend simulation file 34 is obtained by sequentially extracting and registering trend data from the simulation data stored in the file storage unit 26 at the start of simulation. The trend data extracted from the file storage unit 26 is stored by overwriting the old data at the capacity upper limit of the trend simulation file 34.

The trend data collection unit 37 collects the simulation data registered in the trend simulation file 34 and the reference data registered in the trend reference file 35 in time series.
Specifically, reference data and simulated data in the time range specified by the start time and end time are collected.
As shown in FIG. 3, the trend graph display unit 16 of the instructor terminal 10 displays the simulated data and the reference data collected in time series as trend data so that they can be compared along the time axis.

Note that, in the trend graph of the reference data and the simulated data displayed on the common time axis, there is a limit in principle to completely match the synchronization on the time axis by presetting.
Therefore, the trend graph display unit 16 has a function of shifting any one of the trend graphs of the reference data and the simulated data in the time axis direction.
This facilitates comparison of reference data and simulation data having a large variation on the trend graph.

In FIG. 3, the simulated data represented by the alternate long and short dash line is shifted with respect to the reference data represented by the broken line so that the peaks coincide with each other, and corrected data represented by the solid line is obtained.
Then, on the graph screen of the trend graph display unit 16, the peak values of the simulated data and the reference data and the difference ΔV are displayed. Furthermore, the attribute and time of the event that occurred within the display time range are displayed, and the shift amount Δt of the simulated data is also displayed.
Thereby, cooperation with a trend graph display and an event list display is strengthened, operability and visibility are improved, and the load of accuracy evaluation work can be reduced.

Furthermore, as shown in FIG. 4, the event list display unit 15 displays related trend attribute simulated data and reference data when any one of the event data to be compared is selected.
Specifically, when any one of the displayed event attributes (C outlet flow [low] ON) is pointed to, the trend related to the output of this event attribute on the arithmetic logic (FIG. 5B) Simulated data and reference data at the corresponding time (18:25:24) are displayed as attributes (XX pressure, □ △ pressure, XX temperature, △△ temperature) input (Fig. 5A). .

In the example, the error of the △ pressure of the trend simulation data when the event simulation data is generated has a large error with respect to the reference data, and it can be estimated that “advance” has occurred in the event reference data due to this.
Thereby, in the event list, related trend attributes can be easily recognized in simulated data having errors such as “delay” and “advance” with respect to reference data.
Furthermore, the error between the trend attribute reference data and the simulated data can be easily recognized as a factor causing an error in the event.

When the difference between the reference data and the simulation data is large, it is necessary to change the execution program of the plant operation training simulation apparatus to reduce the difference.
Changing this execution program improves the reproducibility of the simulation result for at least the event focused on, but there is a concern that the reproducibility for other events may be reduced.
In order to verify this, it is desirable that the execution program after the change is installed in the simulation apparatus so that the execution program is appropriately returned to the execution program before the change.

Therefore, in FIG. 1, execution program change history management means (not shown) is provided, the initial state file 21 and the simulation execution unit 23 are multiplexed, and past execution programs are installed in each of them.
Then, it is assumed that an arbitrary execution program of the past or current version can be activated by the simulation device by selection.

Furthermore, the event simulation file 32 and the trend simulation file 34 are generated so that the design version of the installation program of the model signal 25, the arithmetic logic 24, and the initial state file 21 can be identified.
The generated event simulation file 32 and trend simulation file 34 are also managed in association with the design version of the installation program by the change history management means (not shown).
As a result, it is possible to improve the work efficiency of the accuracy evaluation before and after the change of the program, and when there is a concern about a problem due to the program change, it is easy to return to the state before the change and verify.

FIG. 6 is an output example of a verification confirmation report of simulation accuracy of the plant operation training simulation apparatus.
When the comparison result in the event list display unit 15 and the trend graph display unit 16 matches due to a change in the program installed in the plant operation training simulation apparatus, a verification confirmation report is output for reporting.

The operation of the plant operation training simulation apparatus will be described based on the flowchart of FIG.
In the instructor terminal 10, reference data recording the operating state of the actual plant is acquired from the outside (S11). An event reference file and a trend reference file are extracted from the acquired reference data (S12, S13) and stored in the simulator body 20.

Subsequently, the group for which the attribute to be compared is preselected is selected by the selection unit 12, and the training condition for virtually realizing the malfunction is set by the setting unit 11 (S14).
With the start of the simulation (S15), an operation signal for the simulated operation panel 41 is generated (S16). Note that the timing for generating the operation signal of the simulated operation panel 41 needs to be synchronized with the timing for generating the operation signal in the event reference file 33.
For this reason, in addition to actually generating the operation signal by operating the simulated operation panel 41, the operation signal may be generated automatically by obtaining all the generation timings from the event reference file 33 in advance.

The simulation data created based on the operation signal, the model signal 25 and the arithmetic logic 24 transmitted from the simulation operation panel 41 is saved as a file (S17).
The extraction unit 31 extracts the event simulation file 32 and the trend simulation file 34 from the simulation data stored in the file (S18, S19).
The simulated data registered in the event simulation file 32 and the reference data registered in the event reference file 33 are collected in time series and displayed so as to be comparable along the time axis (S20).
The simulated data registered in the trend simulation file 34 and the reference data registered in the trend reference file 35 are collected in time series and displayed so as to be comparable along the time axis (S21).

The flow from (S16) to (S21) is repeated until the simulation is completed (S22: Yes, No).
In the comparison between the simulated data and the reference data, if there is a data attribute with a large error and a failure (S23: Yes), the execution program is corrected (S24), and then reinstalled in the plant operation training simulation apparatus (S15). The flow up to (S23) is repeated, and when the comparison result passes (S23: No), a verification confirmation report (FIG. 6) is output (S25: END).

  According to the plant operation training simulation apparatus of at least one embodiment described above, the verification accuracy of the simulation accuracy can be simply and objectively verified by making it possible to compare the reference data and simulation data of the actual plant in time series. It becomes possible to do.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, changes, and combinations can be made without departing from the scope of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

  The components of the plant operation training simulation apparatus can also be realized by a computer processor and can be operated by a plant operation training simulation program.

  DESCRIPTION OF SYMBOLS 10 ... Instructor terminal, 11 ... Training condition setting part (setting part), 12 ... Contrast data selection part (selection part), 13 ... Reference data acquisition part (acquisition part), 14 ... Reference file extraction part, 15 ... Event list display , 16 ... Trend graph display unit, 20 ... Simulator main body, 21 ... Initial state file, 22 ... Simulator control unit, 23 ... Simulation execution unit, 24 ... Calculation logic, 25 ... Model signal, 26 ... File storage unit (storage unit) , 27 ... Signal transmission / reception part, 28 ... Attribute information table, 29 ... Comparison data designation part, 31 ... Simulated file extraction part (extraction part), 32 ... Event simulation file, 33 ... Event reference file, 34 ... Trend simulation file, 35 ... Trend reference file, 36 ... Event data collection unit, 37 ... Trend data collection unit, 41 ... Simulated operation panel, 42 ... Mode Data.

Claims (7)

A file storage unit for saving simulated data that reproduces the operation state of the plant, which is created based on the operation signal transmitted from the simulated operation panel, a preset model signal and calculation logic;
A simulated file extracting unit for extracting an event simulated file from the simulated data stored in the file;
An acquisition unit that acquires reference data that records the operating state of the actual plant;
A reference file extraction unit that extracts an event reference file from the acquired reference data;
An event data collection unit that collects the simulated data registered in the event simulation file and the reference data registered in the event reference file in time series;
A plant operation training simulation apparatus comprising: an event list display unit that displays the simulated data and the reference data collected in time series as event data so as to be comparable along a time axis. In the plant operation training simulation apparatus according to claim 1,
The simulated file extraction unit extracts a trend simulated file separately from the event simulated file,
The reference file extraction unit extracts a trend reference file separately from the event reference file,
A trend data collection unit that collects the simulation data registered in the trend simulation file and the reference data registered in the trend reference file in time series;
A plant operation training simulation apparatus comprising: a trend graph display unit configured to display the simulated data and the reference data collected in time series as trend data so as to be comparable along a time axis. In the plant operation training simulation apparatus according to claim 1 or 2,
A plant operation training simulation apparatus comprising a comparison data setting unit for setting a group in which attributes of the simulated data and the reference data to be compared are selected in advance. In the plant operation training simulation apparatus according to claim 2 or claim 3,
The plant operation training simulation apparatus, wherein the event list display unit displays the simulated data and the reference data of related trend data when any one set of event data to be compared is selected. In the plant operation training simulation apparatus according to any one of claims 1 to 4,
At least one of the event simulation file and the trend simulation file is generated so that a design version of the model signal, the arithmetic logic, and the initial state file can be identified. Obtaining reference data recording the operating state of the actual plant;
Extracting an event reference file from the acquired reference data;
A step of saving simulated data that reproduces the operation state of the plant that is created based on the operation signal transmitted from the simulated operation panel, a preset model signal, and arithmetic logic;
Extracting an event simulation file from the simulation data stored in the file;
Collecting the simulated data registered in the event simulated file and the reference data registered in the event reference file in time series;
And displaying the simulation data and the reference data collected in time series as event data so that they can be compared along the time axis. On the computer,
Obtaining reference data recording the operating state of the actual plant;
Extracting an event reference file from the acquired reference data;
A step of saving simulated data that reproduces the operation state of the plant created based on the operation signal transmitted from the simulated operation panel, a preset model signal and calculation logic,
Extracting an event simulation file from the simulation data stored in the file;
Collecting the simulated data registered in the event simulated file and the reference data registered in the event reference file in time series;
A plant operation training simulation program for executing the step of displaying the simulated data and the reference data collected in time series as event data so as to be comparable along a time axis.

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