JPS5917576A - Plant simulator - 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 provides plant operation training in which plant conditions are displayed on a simulated control panel in response to operations by an operator undergoing training or operations by an instructor from an instructor console. The present invention relates to a plant simulation device that performs plant simulation calculations using a digital computer so that various output lamps, indicators, etc. operate in the same manner as in the plant.

[Technical background of the invention]

In recent years, plants in various fields such as power generation, electric power, steel manufacturing, and chemistry have become complex and sophisticated, and plant simulators have been developed to help operators of these plants learn and improve their operating skills.
It is used for training. This function includes operator response, judgment, and support in the event of a plant accident or equipment failure.
In order to train for imitation and processing, these accidents,
Several simulations of failure states (hereinafter referred to as malfunctions) are registered, and the instructor arbitrarily selects a malfunction to generate the malfunction based on the instructor's judgment. These registered malfunctions have a very low probability of occurring in an actual plant, but if an accident or failure actually occurs, it could lead to a major accident depending on the operator's judgment and operation. This is one of the essential driving training.

FIG. 1 shows a block diagram of an example of the configuration of this type of plant simulator, and a conventional method for generating malfunctions will be described below.

In the figure, a simulated control panel 1 is of the same type and has the same functions as the control panel of the actual plant, and the operator trainer can grasp the state of the plant through various lamps, indicators, etc. on the simulated control panel 1. The operation signal Ut from the simulation side company board 1 operated by the trainee is read into the arithmetic and control unit 3 via the input device 2 as a contact/analog wax. This arithmetic and control device 3 receives the operation signal U t of the operator trainee and the previous plant state signal 01 stored in the storage device 6.
-1, the crane control device simulating section 31 generates a drive signal Dt of the plant state so that the behavior is similar to that of the actual plant, and the plant characteristic simulation calculation section generates the plant state signal Ot simulating the dynamic characteristics of the plant. It consists of 32. The plant status signal Ot from the plant characteristic simulation calculating section 32 is displayed as a plant status display signal At through the output device 4 to various lamps, indicators, etc. on the simulated control panel 1. On the other hand, the instructor console 5 is capable of accepting requests to start and stop the execution of simulated calculations for the calculation control device 3, as well as generating malfunctions, status changes, and setting reservations. Division signal I to control device 3
It is assumed that t is read into the arithmetic and control device 3 via the human power device 2.

By the way, as for plant accidents and breakdowns, (,)
There are two possible cases: (h) when it occurs simply by chance; and (h) when it occurs after an operator's operation or when the plant status changes.

When this is generated as a malfunction in a plant simulator, (accidents and failures such as those in section a1 can be generated arbitrarily by the instructor from the instructor console 5. However, as in section (h), For example, in a power generation plant, if a failure occurs in the regulator valve servo immediately after a turbine trip occurs, causing a malfunction in which the regulator valve is stuck fully open, the instructor should always check the While monitoring the plant status, the instructor determines whether a turbine trip has occurred, and when it is determined that a turbine trip has occurred, this malfunction, which is registered in advance from the instructor console 5, is generated.

[Problems with background technology]

Of course, in such a method, the instructor must constantly monitor the plant status on the mock board 1, and there may be a time lag between the qualification and timing, and the effectiveness of the operation training may be determined at delicate timing. It is impossible to generate certain malfunctions. In addition, depending on the instructor's experience and way of thinking, the training may not be carried out uniformly, and the content of the training may differ depending on the instructor, and because the instructor needs to constantly monitor the plant status, consideration for the trainee may be neglected. In some cases, it may interfere with the training itself.

[Purpose of the invention]

The present invention was made to solve the above-mentioned problems, and its purpose is to enable malfunctions or state changes to occur at appropriate timing,
An object of the present invention is to provide a plant simulator capable of conducting reliable operation training effectively and with a sense of realism.

[Summary of the invention]

In order to achieve the above object, the present invention uses the above-mentioned plant simulator to specify the occurrence timing of malfunction or state change by specifying the change in state quantity and the change timing of plant interlock sequence on the instructor console. The present invention is characterized in that it includes means for generating a malfunction or a state change when the simulated state of the simulator reaches its set timing.

[Embodiments of the invention]

An embodiment of the present invention shown in the drawings will be described below.

FIG. 2 is a block diagram showing an example of the configuration of the arithmetic and control unit of the plant simulator according to the present invention, and the same parts as in FIG. 1 are denoted by the same reference numerals. In the figure, 311 is a malfunction setting unit in which several malfunctions are registered in advance and causes the arithmetic and control unit 3 to generate a specified malfunction in accordance with the malfunction generation command signal a output from the instructor console 5. be. 312 is a comparison unit that compares the plant simulation state signal f when the timing is specified when the generation timing of the malfunction is specified from the instructor console 5;
If they match, the generation timing signal d is output.

Based on this generation timing signal dK, a preset malfunction signal C is generated by the plant characteristic simulation calculation unit 3.
2 and a control device simulation calculation unit (including a plant interlock model) 313, the plant interlock signal g is input to the plant characteristic simulation calculation unit 32, and a plant status signal e and an output signal f are output. ,
The simulated plant state in which the malfunction occurs will be reflected on the simulated control panel 1.

Next, the operation of the plant simulator configured as described above will be explained. As an example of operation training + practice, we will assume here that a malfunction occurs in which the regulator valve is stuck fully open due to a malfunction in the regulator valve servo after a turbine trip occurs, and the operator is trained on how to respond to and operate the malfunction. . Normally, after a turbine trip, the regulator valve is fully open. Now, according to the malfunction generation command signal a set from the instructor console 5, a control valve full open signal is set in the malfunction setting section 311. Further, the turbine trip signal signal is set in the comparator 312 as the malfunction generation timing by the timing designation signal. In the control device simulation calculation section 313,
The brat interlock sequence is simulated in the same manner as in the actual machine, and a number of turbine trip signals are extracted from the output signal f, and a comparison is made in the comparator 312 to see whether the turbine trip signals are ON or not. And comparison part 3
When the turbine trip signal inputted to 12 turns ON, the comparator 312 generates a frequent occurrence timing signal d,
As a result, a control valve fully open stuck signal C is generated, which is input to the plant characteristic simulation calculation unit 32 and the control device simulation calculation unit 313 to execute a plant simulation, and the plant state at that time is reflected on the simulation control panel 1. be done. Therefore, when a turbine trip occurs, the instructor only has to wait for the regulator valve to become stuck fully open. becomes possible.

The monitoring signal that takes the time of occurrence is not particularly limited, and the monitoring signal may be a contact state signal of all plant interlocks or a plant state signal simulated by a dynamic model. It is also possible to set several malfunctions and provide system scheduling by taking a timing designation signal for each malfunction, so that the malfunctions can be generated one after another.

Next, the operation when the plant signal e calculated by the plant characteristic simulation calculation unit 32 is used as a tie-up designation signal will be explained using FIGS. 2 and 3. Here, it is assumed that an accidental stoppage of a water supply pump turbine is simulated as a malfunction, and the operator is trained on how to respond and operate.

Now, based on the malfunction generation command signal a set from the instructor console 5, a water supply pump turbine accident stop signal is set in the malfunction setting section 311. Further, the generation timing of this malfunction is set to occur when the main turbine reaches the rated rotation speed, and the main turbine rated rotation speed is set in the comparator 312 as this timing designation signal.

The comparison unit 312 constantly monitors the main turbine rotation speed output from the plant characteristic simulation calculation unit 32 through the output signal f, and when both signals match, generates a timing signal d, thereby stopping the water supply pump turbine. Signal C is generated to enable plant simulation.

The above processing is shown in a timing chart as shown in FIG. In the figure, the person uses the malfunction generation command signal a from the instructor's console to generate it at 18 seconds. B indicates the main turbine rotation speed,
At ts, 1 rotation is the rated value BT. 0 indicates the timing at which the malfunction is executed as a plant simulation, and ts when the main turbine rotation speed becomes BT.
Occurs at.

As shown in the timing chart above, when the main turbine rotation speed reaches the rated rotation speed, an accidental stop of the water supply pump turbine occurs. By simulating this influence in the plant characteristic simulation calculation unit 32 and the control device simulation calculation unit 313, and by reflecting the plant status at that time on the simulated control panel 1, it is possible to carry out operation training in the event of a failure. There is no need for instructors to constantly monitor the main turbine rotation speed, and this malfunction is often carried out at reliable timing. Furthermore, by giving sufficient consideration to the trainees, instructors can conduct more intensive driving training.

As mentioned above, accidents and failure conditions that occur after operator operations or when plant conditions change can be effective if they occur instantaneously when a certain condition changes, or if they occur at the appropriate timing. However, it is very difficult for instructors to generate these at the right time, and it was dangerous to do so until now.

In this respect, according to the present plant simulator, such table malfunctions can be reliably generated regardless of the instructor. In addition, the effectiveness of operation training will not change significantly due to differences in the experience, ability, and concentration level of instructors, and the same plant conditions and training content can always be implemented. be able to.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and can be implemented with various modifications without changing the gist thereof.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to generate a malfunction or a state change at an appropriate timing, and it is possible to carry out reliable driving training effectively and with a sense of realism. An extremely reliable plant simulator can be provided.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a plant simulator, FIG. 2 is a configuration diagram showing an embodiment of the present invention, and FIG. 3 is a recording chart for explaining the present invention in detail. DESCRIPTION OF SYMBOLS 1... Simulation control panel, 2... Input device, 3... Arithmetic control device, 4... Output device, 5... Instructor console, 6... Storage device, 31... Control Equipment simulation department, 3
2... Plant characteristic simulation calculation section, 311... Malfunction setting section, 312... Comparison section, 313...
-Control device simulation calculation unit, Ut...contact/analog signal, A heavy...plant status display signal, Di...plant status drive signal, It...control signal, at...plant status signal, 1... Malfunction generation command signal, b... Timing designation signal, C... Malfunction generation signal, d... Generation timing signal, e.
...Plant status signal, f...Output signal, g...P4 Figure 2 1
jFigure 3

Claims (1)

[Claims] A simulated control panel operated by an operator trainee, an instructor console operated by a training instructor to control the plant simulation, an input device for inputting operation signals of the simulated control panel and the instructor console, and an input device for inputting operation signals from the simulated control panel and instructor console, An arithmetic and control device that inputs information and performs simulated calculations of the functions of the plant control device and the physical characteristics of the plant, and receives and receives necessary information from this arithmetic and control device, the simulated control panel, and an instructor console. In a plant simulator that includes an output device that displays and outputs navel information and has a malfunction or state change function, the occurrence timing of the malfunction or state change can be determined on the instructor console by the change in state quantity. . A plant simulator comprising means for generating a malfunction or a state change when the simulated state of a plant reaches the set timing by specifying a change timing of a plant interlock sequence.