JPS60247705A - Plant simulating device - Google Patents

Abstract

PURPOSE:To start the simulating operation of the plant simulating device which is operated in combination with an actual plant securely in a bumpless state by monitoring and deciding on the stability of the actual plant automatically. CONSTITUTION:When a request for initialization is commanded on an instructor console 4, the permissible value of variation rates of (n) plant states from the storage part of the actual plant stability decision part 32 of a digital computing element 3 is read out through an I/O2. At the same time, (n) plant states of the actual plant at this time are inputted from the actual plant 5 and the decision part 32 calculates state plant variation rates of the actual plant and compares it with the permissible value. Then when the variation rates are all within the permissible value range, the decision part 32 inverts a flat to 1 and only when the start of simulating operation is commanded on the console 4, a simulation arithmetic part 31 is commanded to start the simulation, so that the simulating operation is started securely in the bumpless state.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a plant simulator that is operated in combination with an actual plant, and particularly for monitoring the stability of an actual plant and starting a bumpless simulated operation. Preferred Plan 1 - Concerning a simulator.

[Technical background of the invention and its problems]

As a plant simulator that is combined with an actual plant, at the start of simulated operation, a digital calculator calculates the initial state of the plant to be simulated according to the state of the actual plant at that time, and automatically There is one that initializes a plant simulation device. This plant simulator allows simulated operation to be started at an appropriate time, and is extremely effective for plant operation training.

However, this type of device has the following problems. That is, when the state of the actual plant is changing from moment to moment, the state of the actual plant when the initial state of the plant to be simulated is calculated is different from when the simulated operation is started. For this reason, a bumpless simulated start of operation was sometimes not possible.

[Purpose of the invention]

An object of the present invention is to provide a plant simulator that can reliably and bumplessly start a simulated operation by monitoring the stability of an actual plant.

[Summary of the invention] The gist of the present invention is to store in advance the rate of change of each state of the actual plant that can guarantee a bumpless start of simulated operation, and to store the rate of change of each state of the actual plant in advance. The purpose is to enable the start of a simulated operation only when the rate of change is within the range.

That is, the present invention is combined with a part of an actual plant, inputs the state of this plant, simulates the physical characteristics of the plant and the function of the control device, and also simulates the initial stage of the plant to be simulated from the state of the actual plant. A digital computing unit that calculates the status, an instructor console that provides simulated calculation data to this digital computing unit, and displays the plant status simulated by the digital computing unit, and inputs operations by the operator training personnel to the digital computing unit. In a plant simulator having a simulated control panel equipped with various ladder status indicators, various operating instruments, various setting devices, etc. similar to the actual plant, each a storage means for storing in advance an allowable rate of change for each state; and a stability determining means for calculating the rate of change of each state of the actual plant and currently determining whether each rate of change is within the corresponding allowable change rate. When starting a simulated operation in combination with the actual plant, the allowable rate of change for each state is retrieved from the storage means, the current actual plan is set, and the rate of change of all states of the actual plant is The simulated operation is started only when the rate of change is within the above-mentioned allowable rate of change.

〔Effect of the invention〕

According to the present invention, when starting a simulated operation of a plant simulator combined with an actual plant, it is automatically determined whether the state of the actual plant is in a state that can guarantee a bumpless start of the simulated operation. It is possible to reliably start a bumpless simulation.

[Embodiments of the invention]

Hereinafter, details of the present invention will be explained with reference to illustrated embodiments.

FIG. 1 is a block diagram showing a schematic configuration of a Plan I simulation device according to an embodiment of the present invention. 1 in the figure is a simulated control panel, which has the same type and functionality as the control panel of the plant to be simulated. The operator trainee grasps the status of the plant using various lamps, indicating instruments, etc. on the simulated control board 1, and
Plant operation can be performed using the various operation switches on the top. 2 is an input/output device that digitally calculates the operator's operation signal Ut from the simulated control panel 1, the instructor's command signal IT from the instructor's console 4, and the plant status signal PT input from the actual plant 5 to the simulated plant. Transfer to device 3.

The digital arithmetic unit 3 is divided into a simulation arithmetic unit 31 and an actual plant stability determination unit 32. The simulation calculation unit 31 reads the plant status signal Pr from the actual plant 5 and the operator's operation signal UT, and performs simulation calculations of the functions of the control device in the simulated plant and simulation calculations of the physical dynamic characteristics of the plant. , the resulting OT is displayed on various lamps and indicators on the simulated control panel 1 via the input/output device 2. At the same time, when conducting operation training, according to the initialization request command from the instructor console 4, the plant status signal PT from the actual plant 5 is read, and the initial value of the simulated plant corresponding to the plant status signal PT is calculated, The resulting YT is displayed on the various lamps and indicators on the simulation panel 1 via the input/output device 2, and the above operations are repeated until the actual plant stability determination section 32 issues a command to start the simulation. The actual plant stability determination unit 32 reads the plant state 1 signal PT from the actual plant 5 at the same time as the initialization request is commanded from the instructor console 4, calculates its rate of change, and calculates the rate of change and the stored value in advance. The plant state signal PT is determined by comparing the plant state change rate with the allowable value.
If the plant status signal PT is in a stable state and the instructor console 4 issues a command to start simulation operation, the simulation calculation unit 31 is commanded to start simulation, and the above operations are repeated until then. .

The instructor console 4 is used to start/stop the simulated calculation.

It has the function of controlling simulated calculations such as initialization functions, and instructing the execution of various functions. The actual plant 5 transfers the plant status signal PT input to the simulated plant to the digital arithmetic unit 3 via the input/output device 2. Here, the actual plant 5 may be any type of plant, and a part of the plant may be unequipped.

Next, the operation of this device configured as described above will be explained.

First, operations during normal plant simulation operation are performed in the same way as in the past, and since they are not directly related to the present invention, their explanation will be omitted. The monitoring function will be explained.

FIG. 2 is a flowchart showing the operations performed in the actual plant stability determination section 32, in which various plant status signals PT input from various parts of the actual plant 5 are taken in from the input/output device 2 to the digital computing unit 3. . In this digital computing unit 3, all allowable rates of change 11i DT for various plant states of the actual plant 5 at the time of starting the simulated operation are stored in advance in a memory.

At the same time as the initialization request is issued from the instructor console 4, the allowable values DT-1 and DT for the rate of change of n plant states are issued.
-2, . . . , DT-N is first taken out from the memory. Next, the n plant status signals PT-1, PT-
2. Read PT-N and calculate each rate of change VT
-1, VT-2+ -, VT-N are calculated, and it is determined whether the rate of change falls within the tolerance value of the corresponding rate of change. If all the rates of change are within the tolerance value, flag F of"
1°', and in other cases, F is O''.Furthermore, when the instructor console 4 issues a command to start the simulation operation, if the flag F is 1°', the simulation calculation unit 31 causes the simulation to start. command, and repeat the above operations until then.

As described above, according to this embodiment, when starting the simulated operation of the plant simulator that is combined with the actual plan i~, only when the rate of change of each status signal PT of the actual plant 5 is within the allowable value, I'm trying to start driving. In other words, since the stability of the actual plant 5 is monitored based on a preset reference value, a bumpless simulated operation start can be performed reliably.

Note that the present invention is not limited to the embodiments described above, and can be implemented with various modifications without departing from the gist thereof. For example, conditions such as the number of various plant states (n) to be stored in advance in the memory of the digital arithmetic unit and the allowable values of their respective rate of change may be determined as appropriate according to the specifications.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a schematic configuration of a plant simulator according to an embodiment of the present invention, and FIG. 2 is a flow chart for explaining the stability monitoring function of an actual plant when starting a simulated operation. . DESCRIPTION OF SYMBOLS 1... Simulation side mW, 2... Input/output device, 3... Digital computing unit, 4... Instructor console, 5... Actual plant, 31... Simulation computing unit, 32... Actual plant stability determination section. Applicant's agent Patent attorney Takehiko Suzue Figure 1 Figure 2

Claims (1)

[Claims] (1) Combined with a part of an actual plant, the state of this plant is input to simulate the physical characteristics of the plant and the functionality of the control device, and the initial state of the plant to be simulated from the state of the actual plant. A digital computing unit that calculates the data, an instructor console that provides simulated calculation data to the digital computing unit, and an instructor console that displays the simulated plant status with the digital computing unit and inputs operations by the operator training personnel to the digital computing unit. A plant simulator comprising: a storage means for storing in advance an allowable rate of change for each state as a criterion for the stability of each state of the actual plant, and a rate of change for each state of the actual plant; and a stability determination means for determining whether each rate of change is within the corresponding allowable rate of change, and when starting a simulated operation in combination with the actual plant, each of the above The permissible rate of change for each state is retrieved from the storage means and determined based on the current state, and the simulated operation is started only when the rate of change of all the states of the actual plant is within the permissible change rate. Plant simulator. (2) The plant simulation device according to claim 1, wherein the simulation control panel is equipped with various status indicators, various operating instruments, and various setting devices similar to those of the actual plant.