JPH0614239B2 - Plant simulator - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a plant simulation device for carrying out plant operation training, and in particular, causes a failure in various equipments constituting a plant interlock and accompanies the failure. The present invention relates to a plant simulator suitable for training defect investigations and repair procedures.

[Technical background of the invention]

Training of operators is indispensable for the operation of plants that require complex, large-scale, safe, and efficient operations such as power generation, electric power, steelmaking, and chemicals. To be

Such a plant simulation device simulates the physical dynamic characteristics of an actual plant and its control device and the function of a plant interlock, and is extremely effective for plant operation training.

FIG. 7 is a block diagram showing a schematic configuration of a conventional plant simulation device. A simulation control panel 1 for simulating a control panel of an actual plant, a calculation control device 2 for performing plant simulation calculation, an instructor console 3, and an input. Comprising a control device 4 and an output control device 5, when a signal such as a switch operated by a trainee on the plant simulation control panel 1 is input to the arithmetic control device 2 via the input control device 4, arithmetic control is performed. The device 2 simulates the dynamic characteristics of the plant and the behavior of the logic such as the plant interlock, and outputs the calculation result to the output control device 5.
Various lamps, indicators, etc. arranged on the panel are displayed or driven by being sent to the simulated control panel 1 via the, and thereby the plant operating state is grasped.

At this time, the instructor instructing the operator outputs to the arithmetic and control unit 2 the simulation control data of the execution instruction of various functions such as the start / stop of the simulation operation from the instructor console 3.

[Problems of background technology]

In such a conventional plant simulating device, trainees are responsible for the occurrence of malfunctions such as malfunctions and malfunctions of relays and the like that compose plant interlocks stored in the control panel of the actual plant. It had the drawback that it could not be investigated or repaired.

[Object of the Invention]

The present invention has been made in order to eliminate the above-mentioned drawbacks of the prior art, and a plant simulation device that simulates a failure of various equipments that compose a plant interlock and also enables maintenance training of these equipments. For the purpose of providing.

[Outline of Invention]

In order to achieve this object, the plant simulator of the present invention outputs a simulated operation signal of the plant, and based on the simulated operation signal, a simulated control panel that displays the state of the plant according to the input of the state signal. Simulates the state of the plant, displays the sequence calculation diagram of the plant interlock of the simulation target and the simulation operation unit that applies the state signal to the simulation control panel, and various types of the plant interlock according to the input of the display control signal. A display device for displaying the state of the device, a simulation control command output means for outputting a failure simulation command for the device, a state changing means for outputting a state change command for the device, and the failure simulation command for the same device. Based on the state signal of the plant and the failure simulation unit that gives priority to these state change commands and provides these commands for simulation of the simulation calculation unit. And it generates a display control signal of the apparatus is obtained and a display state control unit applied to the display device.

Example of Invention

FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention. A simulation control panel 1 having the same type as the control panel of a plant to be simulated and having the same function, and a simulation calculation unit 2 are provided.
1, an arithmetic and control unit 2 having a failure simulation unit 22 and a display state control unit 23, and a simulation control command input means for providing simulation control commands such as start / stop of simulation calculation, failure simulation execution command and various function execution commands. Of the instructor console 3, the operation signal Ut of the simulated control panel 1, the command signal It of the instructor console 3 and the command signal Dt of the display device, which will be described later, are respectively transferred to the arithmetic and control unit 2, and the arithmetic and control unit. The plant status signal Ot simulated in 2 and the status signal Pt of various devices such as relays in the plant interlock are designated by the output control device 5 for transferring to the simulation control panel 1 and the display device 6, respectively, and the console additionally provided. The sequence diagram of the selected part is extracted from the relay sequence diagram stored in the internal memory, and C A display device 6 that displays the state signal Pt on the T display screen, displays the contact state on the display screen so as to match the state signal Pt, and further outputs a state change execution command Dt from the console. I have it.

Here, the simulated control panel 1 has various lamps, an indicator instrument and various operation switches on the panel. While the operation state of the plant is grasped by the lamp and the indicator instrument, the operation switch outputs the plant operation signal. It is configured to get.

Next, the simulation calculation unit 21 constituting the calculation control device 2 reads the operation signal Ut of the operator on the simulation control panel 1 and simulates the physical dynamic characteristics of the plant to be simulated, the function of the control device, and the plant interlock function. The calculation is performed and the resulting state signal Ot is sent to the simulated control panel 1 to display or drive the lamp or indicator. Further, the failure simulating unit 22 follows the failure simulating command in the plant interlock from the instructor console 3 and the state changing command in the plant interlock from the console on the display device 6, and the relay simulated by the simulating operation unit 21. It forcibly changes the state of various devices. In this case, the simulation of the failure is performed prior to the state change, and the state of the device that is forcibly changed by the failure simulation instruction cannot be changed by the state change instruction. Further, the display state control unit 23 reads the state signals Pt of various devices such as relays in the plant interlock simulated in the simulation calculation unit 21, and various types such as relays in the relay sequence diagram displayed on the CRT screen of the display device 6. It displays the contact status of the device.

The operation during the normal plant simulation operation in the present embodiment configured as described above is exactly the same as that of the conventional apparatus, and since it is not directly related to the present invention, its explanation is omitted. Here, the relay in the plant interlock to be simulated is omitted. A failure simulation operation, a status change operation, and a relay sequence diagram display operation of various devices such as the above will be described with reference to FIGS. 2 to 6.

First, as shown in FIG. 2, a part of the plant interlock of the plant to be simulated has an operation switch 11, a parallel circuit of normally open contacts 12 and 13, and a normally closed contact 14 between power source buses P and N.
While the relay 20 and the relay 20 are serially connected in this order, the normally open contact 15 and the lamp 30 of the relay 20 are serially connected. Here, the relay 20 is excited on condition that the operation switch 11 is closed, at least one of the contacts 12 or 13 is closed, and the contact 14 is closed, and the lamp 30 is excited by the relay 20. Lights on condition that the contact 15 is closed. Therefore, assuming that the states of the operation switch 11 and the contacts 12, 13, 14 are S ₁₁ , R _Y12 , R _Y13 , and R _Y14 , respectively, the state R _{Y20 of the} relay 20 and the state L _{30 of the} lamp ₃₀ can be calculated by the following logical operation formulas. Represented.

Therefore, the plant interlock shown in FIG. 2 has the above-described formulas (1) and (2) in the form of the simulated arithmetic unit 2 of the arithmetic controller 2.
It is simulated in 1.

FIG. 3 is a flow chart showing a simulation operation in the simulation operation section 21 for this plant interlock, and a failure simulation operation and a state change operation in the failure simulation section 22.

That is, the failure simulation unit 22 follows the failure simulation command from the instructor console 3 and operates the operation switch 11 and the relay 2
0, when the failure simulation is instructed to the lamp 30, the flags F _S11 , F _RY20 , and _{FL 30} are set to “1”, and otherwise, they are set to “0”. In addition, according to the status change command from the console on the display device 6,
When the operation switch 11, the relay 20, and the lamp 30 are instructed to change their states, the flags F _S'11 and F
_RY'20, and _{F L'30} "1", and in the other cases it is set to "0".

Next, when the flag F _S11 is “1”, the simulation calculation unit 21 sets the state S _I11 designated by the instructor console 3 as the simulation state S ₁₁ of the operation switch 11, and the flag F _S11 is “0”. When F _S'11 is "1", the state S _I'11 designated by the console on the display device 6 is read, and the simulated state S of the operation switch 11 is read.
₁₁ , the flag F _S11 is "0", and the flag F _S'11
Is 0, the operation switch state S _O11 on the simulated control panel 1 is read and set to the simulated state S ₁₁ of the operation switch 11.

Further, when the flag _{F RY20} is "1", the state _{R YI20} designated by the instructor console 3 and the simulated state _{R Y20} read relay 20, the flag _{F RY20} is "0" flag _{F RY'20} is "1" At the time of, the state R designated from the console on the display device 6
The _YI'20 a simulated state _{R Y20} read relay 20, when the flag _{F RY20} is "0" flag _{F RY'20} is "0", on the basis of the logical operation expression of (1), the simulated state of the relay 20 Calculate R _Y20 .

Further, when the flag _FL30 is "1", the designated state _LI30 is read from the instructor console 3 and the lamp 30 is read.
Of a simulated state _{L 30,} when the flag _{F L30} is "0" flag _{F L'30} is "1", the state _{L I30} designated from the console on the display device 6 and the simulated state _{L 30} read lamp 30 , Flag _FL30 is "0"
When the flag _FL'30 is "0", the simulated state L30 of the lamp ₃₀ is calculated based on the logical operation formula (2).

The above operation is repeated during the simulation operation, and by applying it to the simulation operation of all the plant interlocks of the plant that simulates the above operation, it is possible to simulate the failure and change the state of all the devices that constitute the plant interlock. Become.

On the other hand, the display state control unit 23 transfers the state Pt of various devices such as relays that form the plant interlock simulated by the above operation to the display device 6 via the output control device 5.

FIG. 4 is a flowchart showing the display operation of the relay sequence diagram in the display device 6.

That is, the relay sequence diagram RS _I of the portion designated by the console on the display device 6 is stored in the memory of the display device 6 as screen information in advance for all n relay plant relay sequence diagrams RS ₁ , ...
... is taken out from RS _n (step 101) and displayed on the CRT display screen on the display device 6 (step 102). That is, when the relay sequence diagram regarding the relay 20 is designated from the console on the display device 6, the relay sequence diagram shown in FIG. 5 is displayed on the CRT display screen 40 on the display device 6. Next, read the status signal Pt of the various devices in the simulated plant interlock, corresponding in the state signal Pt closed state of the relay contacts in the relay sequence diagram RS _I displayed on the CRT display screen on the display device 6 It is displayed so as to match the simulated state of the device (step 10).
3). In the case of the relay sequence diagram shown in FIG. 5, the open / closed states of the operation switch 11 and the relay contacts 12, 13, 14 are the simulated state S ₁₁ of the operation switch 11 and the relay contacts 12, 13, 14 in the state signal Pt. Simulated state R
_It is displayed so as to match _Y12 , R _Y13 , and R _Y14 , respectively. It should be noted that the above operation relating to the display of the open / closed state of the relay contacts in the relay sequence diagram displayed on the CRT display screen is repeated (steps 104 and 10).
5).

In other words, the instructor console 3 issues a command to simulate the failure of equipment such as a relay in a plant interlock, and after the failure occurs, an operating trainee checks the status of each equipment in the relay sequence diagram displayed on the display device, By performing the operation of the jumpers and lifts of the contacts by utilizing the state changing function from the console on the display device 6, it becomes possible to train the trouble investigation and repair procedures of the devices constituting the plant interlock. That is, the relay contact does not actually exist, but is constructed in a simulated manner on software. To jumper the relay contact, the logical state is the same as, for example, closing the relay contact. In the display of the display, a solid line that short-circuits the circuit will be drawn (the symbol indicating the short-circuit may be duplicated on the contact display, etc.). It makes it possible to train the repair procedure without short-circuiting real contacts.

For example, in the case where the operation switch 11 fails due to a command from the instructor console 3 and the lamp 30 that has been turned on is turned off, after the driving trainer confirms the abnormality by the state of the lamp 30 on the simulated control panel 1. , A relay sequence diagram for the lamp 30 is displayed on the CRT on the display device 6.
Display it on the display screen. The CRT display screen is shown in FIG. The driving trainer uses the CRT display screen to relay 2
Since the contact 15 of 0 is open, it can be confirmed that the lamp 30 is turned off. In addition, driving trainer, relay 2
It can be confirmed that the state change is executed for 0 and the contact 15 is closed to simulate the jumper operation of the relay contact 15 and the lamp 30 is turned on. That is, it can be confirmed that the lamp 30 is not a failure. Next, the operator CRTs the relay sequence diagram for the relay 30.
Since it is displayed on the display screen and the operation switch 11 is released, the demagnetization of the relay 30 can be confirmed. In addition, the driving trainer can change the position of the operation switch 11 on the simulated control panel 1 and C
By confirming that the state of the operation switch 11 displayed on the RT display screen is different, the operation switch 1
It is possible to understand that the contact point 1 is out of order.

Thus, according to this embodiment, it is possible to simulate the failure of various devices on the plant interlock according to a command from the instructor console 3.

In addition, according to the sequence diagram displayed on the CRT display screen of the display device 6, the operation trainee confirms the states of various equipments on the plant interlock while performing the trouble investigation and the repair procedure of the equipments forming the plant interlock. You can train in the same way as.

In the above-described embodiment, the instructor console 3 outputs the failure simulation command for the equipment on the plant interlock.
The failure simulation command may be output from the console on the display device 6. Further, when a failure occurs, various devices such as a relay in the relay sequence diagram displayed on the CRT display screen may be designated by a light pen, or may be designated by using a touch screen.

Further, in the above embodiment, the console on the display device 6 is used to give the state change command, but instead of this, the instructor console 3 may be used to give the state change command.

Further, in the above embodiment, the fault simulation and the state change of the operation switch and the relay have been described, but it goes without saying that the present invention can be applied to various devices such as an alarm setting device, a thermal switch, a limit switch and a lamp.

〔The invention's effect〕

As is apparent from the above description, according to the present invention, it becomes possible to simulate the failure of various equipments forming the plant interlock of the simulated plant, while confirming the states of the various equipments simulated by the image on the display screen. With the same procedure as the actual machine, it is possible to conduct a defect investigation and repair procedure training for the equipment that constitutes the plant interlock.

In addition, the attendant effect that the trainee can be made to understand the structure of the plant interlock more deeply is obtained.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention, FIG. 2 is a circuit diagram of a plant interlock simulated in the same embodiment, and FIGS. 3 and 4 explain the operation of the embodiment. 5 and 6 are examples of display screens of the CRT display device constituting the same embodiment, and FIG. 7 is a block diagram showing the configuration of a conventional plant simulation device. 1 ... Simulated control panel, 2 ... Arithmetic control device, 3 ... Instructor console, 4 ... Input control device, 5 ... Output control device, 6 ... Display device, 21 ... Simulated computing unit, 2
2 ... Failure simulation unit, 23 ... Display state control unit.

Claims (1)

[Claims] 1. A simulated control panel that outputs a simulated operation signal of the plant and displays the state of the plant in response to the input of the status signal, and a simulated state of the plant based on the simulated operation signal, and the status signal thereof. And a display device for displaying the sequence diagram of the plant interlock to be simulated and displaying the states of various devices on the plant interlock in response to the input of the display control signal. , A simulation control command output means for outputting a failure simulation command for the device, a state changing means for outputting a state change command for the device, and the failure simulation command for the same device are given priority over the state change command, Of the command to simulate the simulation calculation unit, and a display control signal of the device is generated based on the state signal of the plant to generate the display. Plant simulation device including a display state control unit added to the ray device.