JPS6136786A - Simulator for training operator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a simulator device for training plant operators.

[Technical Background of the Invention] In general, the systems of recent plants have become complex and large-scale, as seen in power plants, ironworks, chemical plants, etc.
Control devices are becoming more sophisticated.

These plants need to operate efficiently without stopping at all times, but especially in plants that have a large impact on society, such as the 51 nuclear power plants, there is a strong need to improve operational safety and availability. required. In order to meet these demands, operator training is essential, and for this purpose, operator training simulators are provided.

This simulator equipment usually has an instructor console placed behind the simulated control panel operated by the operator, and the instructor can issue a plant abnormality simulation command signal assuming a plant abnormality or stop the simulation. It is now possible to control the progress of the simulation and guide driving training.

[Problems with the Background Art] However, with conventional operator training simulators, the burden on instructors is heavy, and when operators repeatedly make erroneous operations, it is difficult to accurately and quickly give instructions to correct the erroneous operations. There was a problem that made it practically difficult. That is, even as an instructor, it is impossible to memorize sophisticated control procedures for a complex, large-scale system for every case. For this reason, standard operational errors made by operators can be pointed out and corrective instructions can be given accurately and quickly, but if the operator performs complex operations such as repeated incorrect operations, In such cases, it is extremely difficult to quickly provide accurate correction instructions.

[Object of the Invention] The present invention provides accurate and prompt instructions for corrective operations when an operator makes an erroneous operation, as well as provides appropriate advice on operating operations to the operator, thereby efficiently training the operator. The purpose of the present invention is to provide a simulator device for operator training that can be used to train operators.

[Summary of the Invention] The present invention provides a model operation creation unit in a simulator device for operator training, and creates a model for optimally dealing with a plant abnormality when a plant abnormality is caused by a command from an instructor console. While creating a change in the plant state over time corresponding to the operation, an operation evaluation unit is provided to evaluate the model operation and the corresponding model plant state over time, and the actual operation performed by the operator and the corresponding actual plant state over time. The system compares the actual operations, evaluates them, and displays the evaluation results on the instruction console.

[Embodiments of the invention] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a configuration diagram of a simulator device for operator training according to an embodiment of the present invention, and 1 has a display, an indicator, a recorder, an operating instrument, etc. similar to the control panel of an actual plant. This is a simulated control panel. 2 generates various simulated command signals such as start/stop of simulated operation, activation, slow/fast switching, backtracking, and occurrence of simulated failure based on the instructor's operations, while also generating the model operation and the model plant state over time. This is an instructor console that displays and records the trainee's actual operations, the model plant status over time, the evaluation results of the actual operations, etc. 3 is an input/output device for inputting/outputting various information.

4 is a control device/plant simulation unit 5, a model operation creation unit 6,
This is a calculation device consisting of an operation evaluation section 7. The above control device/
The plant simulation unit 5 is a part that is conventionally known and executes simulation calculations of a control device in an actual plant, simulation calculations of physical characteristics of an actual plant, and the like.

On the other hand, when a simulated command signal for a plant abnormality such as a system cutoff is issued from the instructor console 2, the model operation creation unit 6 determines what operation the operator should perform in response to the plant abnormality. This part creates a model operation signal that indicates whether the plant can be maintained safely or is the optimal operation at that time, and a signal that represents changes over time in the plant state when the plant is operated with this model operation.

In addition, the operation evaluation unit 7 is configured to monitor the model operation signal created by the model operation creation unit 6 and the model operation status of the plant over time in response to this model operation, and the operator's actual simulated control. The actual operation signal obtained by operating the panel 1 is compared with the temporally simulated plant state No. 48 that changes every moment based on the actual operation signal, the actual operation is evaluated, and the evaluation result is stored in the storage unit 8. This is the part that is output to the instructor console 2.

Next, the operation of the operator training simulator constructed as described below will be explained with reference to FIGS. 2 to 5. still,
FIG. 2 shows an example of a simulated operation model in the control device/plant simulation unit 5, and FIG. 3 shows an actual operation obtained by the simulated operation and the corresponding simulated plant state over time, and a model operation and the corresponding simulated operation model. This figure shows the model plant status over time. 4 shows the main processing operations of the model operation creation section 6, and FIG. 5 shows the main processing operations of the operation evaluation section 7.

It is now assumed that the simulated plant operating state is in a steady operating state. At this time, various operation signals S+ from the simulated control panel 1
is inputted to the control device/plant simulation section 5 of the arithmetic device 4 via the input/output device 3. Control device/plant simulation section 5
There are various calculation models based on the actual control device and plant, but to simplify the explanation, one of them is a proportional + integral model in which the control device is indicated by 50, as shown in Figure 2. A case will be explained in which there is a first-order lag model in which the plant is indicated by 51. One signal S1 among various operation signals emitted from the simulated control panel 1 is added to the calculation model 50, and proportional + integral calculations are performed. A control signal based on this calculation result is applied to plant equipment having a first-order lag, and a plant state quantity signal S21 such as flow rate, temperature, etc., which is the result, is calculated by the calculation model 51. In this way, the control device/plant simulation section 5
Various plant state quantity signals S=+ calculated by various calculation models are displayed and output to the simulated control panel 1 as a display signal S2. At the same time, the input signal is input to the operation evaluation section 7, and in a steady state, as shown before time 70 in FIG. 3, the operation signal S11 and the plant state quantity signal >';

In this state, when the instructor issues a simulated command signal S3 assuming a plant failure via the instructor console 2, a signal S3+ based on it is sent to the control device/plant simulation section 5.
is input to an adder ADD provided before the calculation model 51. This simulated command signal S1+ disrupts the equilibrium state up to now, and the plant state quantity signal 521 starts to rise as shown in FIG. 3 from the input time points t and o of the signal 531.

This plant state quantity signal 52+ is displayed on a predetermined instrument of the simulated control panel 1 as a display signal S2. Therefore, when the operator sees that this signal S2 is about to exceed the upper limit value tL,
In order to restore the plant state quantities to normal, the corresponding operating equipment is operated. For example, if the plant status signal 52+, which represents the reactor feed water flow rate, is likely to exceed the upper limit due to the generation of the failure simulation command signal S1+ assuming a certain plant failure, the operator will close the water supply valve and perform the simulation control. Operate the water supply valve close switch on panel 1 to receive operation signal 5.
11 is output to the control device/plant simulation section 5.

However, since the operator is still inexperienced in operation, the operation is delayed, and the increase in the plant state quantity signal Sxx is canceled out at the 1+ point after the upper limit is exceeded. Also, at this time, the operator increases the manipulated variable in an attempt to quickly suppress the rise in the plant status signal S21.

As a result, the upward movement is rapidly suppressed and the downward movement begins, so the operating amount is reduced at the second point in time due to concerns about undershoot. However, the pointer on the meter actually fell below the target value, so I tried to restore it to the original value, and at the 3rd point, I added an operation in the opposite direction.

In this manner, the operator performs operations as shown by the solid line A of the operation signal S1t in FIG. 3 to stabilize the plant condition while observing the meter values displayed on the gauges of the simulated control panel 1. In response to this operation, the plant state repeats fluctuations as shown by the solid line B of the signal 521 in FIG. 3, and then settles to the original state.

On the other hand, the model operation creation section 6 also controls the control device/plant simulation section 5.
It is equipped with the same various simulated calculation models as the
Similar to the plant simulation section 5, various operation signals S++ from the simulation control panel 1 and simulation command signals Ss+ from the instructor console 2 are applied. Furthermore, this model operation creation section 6
Various plant status signals 521 from the control device/plant simulator 5 are also added to. Thereby, the model operation creation unit 6 creates an optimal simulation operation signal 541 according to the simulation command signal 531. That is, as shown in the flowchart of FIG. 4, when the model operation creation unit 6 receives the input of the simulated command signal S31 and captures the change (400), it sends the control device/plant simulation unit to know the plant state at that time. 5
Read various plant state quantity signals S21 from (401
), then read out the compliance evaluation criteria for keeping the plant in the optimal state from the plant state at this time and the failure simulation command (402), and calculate the target brat state (402).
03). In the example of FIG. 3, when the reactor feed water flow rate increase command signal Sst is input due to some failure, in order to keep the plant state stable, the reactor feed water flow rate signal 52
It is only necessary to maintain + constant regardless of the input of the signal Sst, so the target plant state at that time is the original water supply flow rate value itself, and the conformity evaluation criterion is regardless of the input of the failure simulation command. This means not changing the water supply flow rate. This varies depending on the target plant state quantity, the type and degree of simulated failure, the plant state at that time, etc. 1For example, it is appropriate to rapidly reduce the plant state quantity by inputting a failure simulation command. In some cases, the evaluation criteria are determined from the plant state at that time and the input failure simulation command, and an appropriate evaluation criterion is selected from among the evaluation criteria set and stored in advance.

Next, once the target plant state is determined, a model manipulated variable is calculated to realize it (404). That is, since the plant state quantity signal S21 changes due to a change in the simulated command signal Sst, the signal Ss is changed in order to suppress this change.
An operation signal 311 is added to cancel the +. By applying this signal to the calculation model 51 via the calculation model 50 in FIG. 2, via ADD, the plant state quantity signal 521 in FIG. The plant state quantity shown by the dashed line is obtained. These calculations are performed by the control device/plant simulation unit 5.
is executed in a short time while the model is being calculated in a time that matches the actual plant. The model operation creation unit 6 displays and outputs the simulated operation signal and the model plant state quantity signal 541 created by performing such calculations to the instructor console 2 as a signal S4. The instructor constantly compares this model signal with the actual signal performed by the operator and gives instructions to the operator as necessary. At this time, if the operator's operation is delayed or inappropriate, and the plant status changes drastically, it is possible to immediately determine what instructions should be given to the operator. It is difficult to do so.

Therefore, in such a case, if an instructor wants to know the model operation amount to stabilize the plant state to the target state,
Issue cover operation instructions from instructor console 2. When the model operation creation unit 6 receives this instruction (405), it repeatedly executes the above-described process again and calculates the optimal model operation amount at that time. On the other hand, if there is no cover operation instruction, the calculated data is stored in the storage unit 8 (406),
The processing here ends.

At this time, the operation evaluation unit 7 receives the simulated command signal S31. from the instructor console 2. A plant state quantity signal S21. from the control device/plant simulator 5. The model operation signal and the model plant state quantity signal 4+ are received from the model operation generation unit 6, the operations performed by the operator are evaluated, and the results are displayed on the instructor console 2 during or after the training. That is, the fifth
As shown in the flowchart in the figure, when the operation evaluation section 7 receives the input of the simulated command S31 (500), the operation evaluation section 7 receives the model operation signal and the model plant state quantity signal S41 from the model operation generation section 6.
(501, 502), and then the actual operation signal S11 from the simulated control panel 1 and the actual plant state quantity signal 52+ from the control device/plant simulation unit 5 (503, 50
4) Next, the model operation creation unit 6 compares the imported model plant state and the actual plant state 505).
As a result, if the model plant state and the actual plant state almost match, it is determined that the actual operation performed by the operator is appropriate (506), and the result is stored in the storage unit 8 (509). . However, if there is a difference between the model plant state and the actual plant state, it is judged as abnormal (506
), calculate what operation by the operator was abnormal, and
A display is output to the instructor console 2 (507). To explain this using the example of FIG. 3, the model operation signal and the model plant-like mJi signal shown by dashed-dotted lines C and D can be instantaneously calculated by the model operation generation unit 6, and the plant state is stabilized in F time. All the data up to this point are input to the operation evaluation section 7. The operation evaluation section 7 monitors these data, evaluates the actual operation by comparing the model plant state and the actual plant state, and displays and outputs the results to the instructor console 2 every moment. For example, if the operator has not performed any operation at the time point 2, a message indicating that the operation has been delayed is displayed on the instructor console 2.

In addition, the number of times in the upward direction of operation and the number of times in the downward direction of operation in actual operation are monitored and output to the instructor's console 2 for display. Furthermore, the amount of overshoot, amount of undershoot, settling time of the actual plant state quantity, and the difference between the actual plant state quantity and the model plant state quantity, that is, the shaded area in FIG. do. In addition, ultimately, by comparing these data with preset standard data and determining their magnitude, we can comprehensively judge whether retraining is necessary, whether it is necessary to understand the plant dynamic characteristics, or whether the drum level increase rate is necessary. A message indicating that attention is required is displayed and output to the instructor console 2 along with the above data.

This allows instructors to convey various evaluations such as those mentioned above to operators during or after training.
It will be possible to improve the quality of training, improve efficiency, and standardize training while reducing the burden on instructors.

On the other hand, as explained above with reference to FIG.
8) The operation evaluation section 7 repeatedly executes the above-described process again and displays and outputs the above-mentioned operation evaluation message for the cover operation performed by the operator to the instructor console 2, so that the instructor can evaluate the cover operation performed by the operator. Can give instructions and evaluations.

[Effects of the Invention] As described above, h' = According to the present invention, since the model operation and model plant state are calculated in advance, it is possible to quickly point out erroneous operations by operators, thereby improving the quality of operating techniques and training. Speed-up can be achieved. Furthermore, by comparing the actual operation and the model operation, the degree of influence on the plant during each operation can be grasped in chronological order. Furthermore, since evaluations can be made in the form of several specific evaluations or comprehensive judgment results can be obtained in words, the quality of training can be improved, the training level can be made uniform, and the burden on instructors can be reduced.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a simulator device for operator training according to an embodiment of the present invention, FIG. 2 is a specific configuration diagram showing an example of the control device/plant simulation unit calculation model of FIG.
The figure is a time chart of the input/output signals of the calculation model in Figure 2, Figure 4 is a flowchart of the processing of the model operation creation section of Figure 1, and Figure 5 is a flowchart of the processing of the operation evaluation section of Figure 1. . 1...Mock control panel, 2...Instructor console, 3.
... Input/output device: 4... Arithmetic device, 5... Control device/plant simulation section, 6... Model operation creation section, 7...
Operation evaluation section, 8... storage section. Figure 1 Figure 2, 5 Figure 3 □ Figure 4

Claims (1)

[Claims] A computing device that simulates the characteristics of an actual plant and its control devices, an instructor console that gives various simulated commands to this computing device and displays information from the computing device, and various types of control panels similar to the actual control panel. In a simulator device for operator training, the simulator device is equipped with an operation instrument, a display device, and a simulated control panel that provides operator operations to a computing device and displays a simulated plant state simulated by the computing device. and a model operation creation unit that calculates a model operation and a model plant state corresponding thereto from the model operation and the model plant state, and from the model operation, the model plant state, the operator's actual simulated operation, and the corresponding model plant state. What is claimed is: 1. A simulator device for operator training, comprising: an operation evaluation unit that creates data and messages for evaluating operator operations, and displays and outputs the data and messages on the instructor console.