JPH0229225B2 - - Google Patents

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 simulator that performs plant simulation calculations using a digital computer so that various output lamps, indicators, etc. operate in the same manner as in the actual 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 more complex and sophisticated, and plant simulators have been developed and used for training to help operators of these plants learn and improve their operating techniques. This function includes simulations of accidents and failure conditions (hereinafter referred to as "Malfunction") in order to train operators on how to respond, judge, operate, and handle plant accidents or equipment failures. This occurs based on the instructor's judgment, by registering a number of ``Malfunctions'' and selecting a Marufanction at his/her discretion. The probability of these registered malfunctions occurring in an actual plant is extremely low, but if an accident or failure were to occur, it could result in a major accident depending on the operator's judgment and operation. It is one of the important driving training.

FIG. 1 shows a block diagram of an example of the construction 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 simulated control panel 1 operated by the trainee is read into the arithmetic and control unit 3 via the input device 2 as a contact/analog quantity. . This arithmetic and control unit 3 uses the operation signal Ut of the operator trainee and the previous plant state signal C _t-1 stored in the storage device 6 to adjust the plant state so that the plant behaves in the same way as the actual plant. A control device simulation unit 31 that generates a drive signal Dt, and a plant characteristic simulation calculation unit 3 that generates a plant status signal Ct that simulates the dynamic characteristics of the plant.
It consists of 2. The plant status signal Ct 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 receiving requests to start and stop the execution of simulated calculations for the arithmetic and control device 3, as well as generating Marufunctions, status changes, and setting reservations. 3
It is assumed that the control signal It for is read into the arithmetic and control device 3 via the input device 2.

Incidentally, there are two possible types of plant accidents and failures: (a) cases that occur simply by chance; and (b) cases that occur after operations by operators or when plant conditions change.

If this occurs as a malfunction in a plant simulator, an accident like the one in section (a),
A failure is caused by the instructor arbitrarily generating it from the instructor console 5. However, in the case of item (b), for example, in a power generation plant, a failure in the regulator valve servo occurs immediately after a turbine trip occurs, causing a malfunction in which the regulator valve is stuck fully open. The instructor always monitors the plant status on the mock board 1 and determines whether a turbine trip has occurred. I am trying to generate this.

[Problems with background technology]

Of course, in this method, the instructor must constantly monitor the plant status on the mock board 1, and there is a time lag at the appropriate timing, making it difficult for the operator training to be effective at delicate timings. It is impossible to generate a Marufanction. 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 vary depending on the instructor, and because the instructor needs to constantly monitor the plant status, In some cases, the training itself may be hindered if consideration is not taken into consideration.

[Purpose of the invention]

The present invention was made in order to solve the above-mentioned problems, and its purpose is to make it possible to generate a malfunction or state change at an appropriate timing, and to effectively and provide a sense of realism. An object of the present invention is to provide a plant simulator that allows reliable operation training to be carried out.

[Summary of the invention]

In order to achieve the above object, the present invention includes a simulated control panel operated by an operator trainee, an instructor console operated by a training instructor to control the plant simulation, and operation signals for the simulated control panel and the instructor console. an input device that inputs the information, an arithmetic control device that inputs the information from this input device and performs simulation calculations of the functions of the plant control device and the physical characteristics of the plant, and an arithmetic and control device that receives necessary information from the arithmetic and control device. In a plant simulator that consists of a receiving device, a simulated control panel, and an output device that displays and outputs the information to the instructor's console, and has a multifunction or state change function, the instructor's console can display changes in state quantities and plant interlock sequences. By specifying the change timing, the arithmetic and control unit is equipped with a means for generating a Marufunction or state change when the plant simulation reaches the 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 given the same reference numerals. In the figure, reference numeral 311 indicates a Maruf exposition setting unit in which several Maruf expressions are registered in advance, and which causes the arithmetic and control unit 3 to generate a designated Maruf expression in response to the Marauder expression command signal a issued from the instructor console 5. It is. 312 is instructor console 5
When the generation timing of the Maruf function is specified, the comparison section compares the timing specification b and the plant simulation state signal f, and if the timing specification b and the plant simulation state signal f match, the generation timing signal d is determined. Output. Based on this generation timing signal d, the preset malfunction signal c is processed by the plant characteristic simulation calculation section 32 and the control device simulation calculation section (including the plant interlock model) 313, and the plant interlock signal g is generated. By inputting the plant characteristic signal e and the output signal f to the plant characteristic simulation calculating section 32 and outputting the plant condition signal e and the output signal f, the plant simulation state in which the Marufanction occurs can be simulated in the simulated control panel 1.
This will be reflected above.

Next, the operation of the plant simulator constructed as described above will be explained. Here, as an example of operation training, we will explain how a malfunction occurs when the regulator valve is stuck fully open due to a malfunction of the regulator valve servo after a turbine trip occurs, and how the operator responds to this.
This assumes the case of training operations. Normally, after a turbine trip, the control valve is fully open. Now, in response to the Maruf angle generation command signal a set from the instructor's console 5, a control valve full open signal is set in the Maruf angle setting section 311. In addition, the comparator 31 uses the timing designation signal b as the Marufanction generation timing.
Set the turbine trip N signal within 2. In the control device simulation calculation unit 313, the plant interlock sequence is simulated in the same way as in the actual machine, and the turbine trip signal is extracted from the output signal f, and the comparator 312 determines whether the turbine trip signal is N or not. Compare whether or not. When the turbine trip signal input to the comparator 312 turns ON, the comparator 312 generates a generation timing signal d, which generates a regulating valve fully open stuck signal c, which is sent to the plant characteristic simulation calculation section. 3
2. A plant simulation is executed by inputting the data to the control device simulation calculation unit 313, and the plant state at that time is reflected on the simulation control panel 1. Therefore, when a turbine trip occurs, the instructor only has to wait for the regulator valve to become stuck fully open, and the instructor can generate this malfunction without causing a lag in the generation timing at delicate times. It becomes possible.

The monitoring signal that determines the generation timing is not particularly limited, and all plant interlock contact state signals or plant state signals simulated by a dynamic model can be used as the monitoring signal. Furthermore, it is also possible to set several Maruf functions and provide scheduling by taking a timing designation signal for each Maruf function, so that the Maruf functions 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 the timing designation signal b 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 Marufanction, and operators are trained on how to respond and operate the system.

Now, the water supply pump turbine accident stop signal is set in the Maruf angle setting section 311 by the Maruf angle generation command signal a set from the instructor's console 5. Further, the generation timing of this Marufunction is set to occur when the main turbine reaches the rated rotation speed, and the main turbine rated rotation speed is set in the comparison section 312 as this timing designation signal b. 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. 3. In the figure, A is the Marufanction generation command signal a from the instructor's console.
, and is generated in to seconds. B indicates the main turbine rotation speed, and the rotation speed is the rated value at ts.
It is marked R _T. C indicates the timing at which the Marufanction is carried out as a plant simulation; ts when the main turbine rotation speed reaches R _T.
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 section 32 and the control device simulation calculation section 313, and by reflecting the plant state at that time on the simulation control panel 1, it becomes possible to carry out operation training in the event of a failure, and especially for instructors. However, there is no need to constantly monitor the main turbine rotation speed, and this Marufunction is executed at a 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 instantly when a certain condition changes, or if they occur at the appropriate timing. However, it is extremely difficult for instructors to generate these events at the right time, and this has not been possible until now.

In this regard, according to this plant simulator, the occurrence of such Marufanctions does not depend on the instructor;
It is possible to generate this reliably. In addition, the effectiveness of operation training does not change significantly due to differences in the experience, ability, and concentration level of instructors, and the same plant conditions and training contents can be implemented at all times, making it possible to create a reliable and suitable plant simulator. can. That is, by specifying not only the plant dynamic characteristic model but also the change timing of the plant interlock sequence, a malfunction or a state change can be generated in any plant state without any restrictions.
For example, since it is possible to handle the timing of changes such as signals operated by operators or the occurrence of turbine trips, it is possible to capture a wider range of change timings and generate malfunctions or state changes. Furthermore, the plant simulated state signal f obtained by changing the plant dynamic characteristic model or the plant interlock sequence is
The comparison unit 312 compares the occurrence of the Maruf function and state change with the timing specification b set by the setting unit. In order to generate a change or state change, select an arbitrary point that includes not only the calculation result of the dynamic characteristic model, which is a signal that can be treated as a plant mock board state signal, but also the plant interlock sequence change signal. By registering Marufanction and state change timing specifications for points,
Arbitrary Marph functions and state changes can be registered.

Furthermore, in the plant simulator of this embodiment, the following effects can be obtained by equipping the arithmetic and control device 3 with a means for generating a Marufunction or a state change.

(a) The means for causing a marfunction or state change may be any malfunction item,
This is an independent software process that enables generation processing for items subject to status change, and is an operation that performs these operations in order to execute trigger processing that occurs during plant characteristic simulation calculations and plant interlock sequence simulation calculations. By providing the control device 3 with the means, it is possible to efficiently execute the process.

(b) Plant simulation state signal f and timing specification b
Since the comparator 312 that performs the comparison calculation with the data is located in the same device, there is no timing shift.

(c) Since it is necessary to immediately feed back the malfunction or state change signal c of the calculation result to the plant characteristic simulation calculation unit 32 or the control device simulation calculation unit 313 and perform calculation processing, it is provided in the same device. By doing so, processing can be performed faster than when feedback is provided by external transmission or the like. For example, in order to cause a failure in an indicator, if the data is not in the same device, it must be output to the outside, then returned to the arithmetic and control unit, and then the data is sent to the arithmetic and control unit twice before being processed to change the indicator. This means that the timing of the comparison work in the comparison unit 312 will be shifted accordingly, and it is difficult to say that it can be performed properly.

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 grasp a wider range of change timings and generate a malfunction or state change at an appropriate timing in any plant state without being subject to any restrictions, and it is effective. Therefore, it is possible to provide an extremely reliable plant simulator that can carry out reliable operation training while giving a sense of realism.

[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,
FIG. 3 is a timing chart for explaining the operation of the present invention. 1... Simulation control panel, 2... Input device, 3... Arithmetic control device, 4... Output device, 5... Instructor console, 6
...Storage device, 31...Control device simulation section, 32...Plant characteristic simulation calculation section, 311...Maruf function setting section, 312...Comparison section, 313...Control device simulation calculation section, Ut...Contact/analog signal, At...Plant Status display signal, Dt...Plant status drive signal,
It...Control signal, Ct...Plant status signal, a...Marufanction generation command signal, b...timing designation signal, c...Marufanction generation signal, d...
Occurrence timing signal, e...Plant status signal, f
...Output signal, g...Plant interlock signal.

Claims (1)

[Scope of Claims] 1. A simulated control panel operated by an operator trainee, an instructor console operated by a training instructor to control the plant simulation, and an input device for inputting operation signals of the simulated control panel and instructor console. and,
An arithmetic and control device that inputs information from this input device and performs simulation calculations on the functions of the plant control device and physical characteristics of the plant, and receives necessary information from this arithmetic and control device, and In a plant simulator comprising an output device that displays and outputs the information to an instructor's console and has a multifunction or state change function, the instructor's console specifies changes in state quantities and timing of changes in plant interlock sequences. A plant simulator characterized in that the arithmetic and control unit is equipped with means for generating a Marufanction or a state change when the plant simulation reaches its set timing.