JP2002189503A - Controller equipped with simulation function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a controller having a simulation function capable of executing simulation by including only a plurality of actuators arranged in a plant as actual machines. SOLUTION: A plant 27 is provided with plant equipment 22, a plurality of actuators 23 and 24 changing the operating state of the plant equipment 22, and actuator detectors 25 and 26 for detecting the amount of operation of each actuators 23 and 24. In a controller 21 capable of selectively switching the operating state of the plant 27 and a simulation state obtained by simulating the operating state of the plant 27, a control part 28 is provided with a switching means 31 for selectively introducing either a signal obtained by detecting the state of the plant or an output signal of a plant model part simulating this to an arithmetic command part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device having a simulation function capable of controlling and simulating various plants such as a steam turbine power plant, a gas turbine power plant, a compressor plant and a wind tunnel facility. About.

[0002]

2. Description of the Related Art Generally, in the construction of a plant, a plant to be controlled is constructed first, and thereafter, instrumentation work including wiring work is performed. For this reason, there is a problem that the adjustment of the control device connected to the plant cannot be freely performed because of the influence of the construction work of the plant. In addition, since the adjustment of the control device requires the operation of the plant, there is a problem that the cost for adjusting the control device becomes large.

As means for solving such a problem, a simulator that simulates a plant and generates a signal necessary for control is used. In this case, when the simulator is used, the control device and the simulator are connected by electric wiring, and when the plant is actually controlled, the control device and the plant need to be connected by electric wiring. There is a problem that it has to be reconnected.

[0004] In order to solve such a problem relating to the simulator, a technique of realizing the simulator by a computer and eliminating the switching of the connection state of the line of the transmission line has been used in many cases. For example, it is disclosed in JP-A-11-324610.

In this prior art, a control device having a simulation function including a control unit, a simulation unit, and two switching units is disclosed. The control unit performs a predetermined control calculation from an external input such as a turbine speed, a valve opening, and a load, and outputs a control command to the plant as a result of the calculation. The simulation section outputs a plant simulation state signal simulating an actual plant in response to a control command input from the control section.

[0006] During normal operation of the plant, the control device
An external input is input to the control unit by one of the switching units, and a control command output from the control unit is input to the plant by the other switching unit. At the time of simulation, the output of the simulation unit is input to the control unit by one switching unit, and the other switching unit
A control command output from the control unit is input to the simulation unit. In this way, the control device is configured to be able to switch the connection state between the plant and the simulation unit with respect to the control unit without changing the line when switching between the actual operation and the simulation. I have.

As a method of using the simulator disclosed in the above-mentioned Japanese Patent Application Laid-Open No. H11-324610, not only adjustment of the control device but also pursuit of the cause of a plant abnormality, training of an operator, and furthermore, Although there are various applications such as operation confirmation before startup, the conditions required for the control device differ according to each application.For example, instead of simulating the operation of the entire plant equipment with a simulator, the actual There is a problem that the function of the plant cannot be simulated in a state where a real machine and a simulator are combined using a part of the machine.

[0008] Further, the configuration of the above control device tends to be complicated with the progress of automation. Such progress in automation reduces the burden on the operator during normal operation, but conversely, when an abnormality occurs in the plant, the operator not only operates the plant, but also operates the automated control device. If they do not understand, it is not possible to cope with the above-mentioned abnormality, and the burden on the operator is rather increased. The occurrence of such an abnormality, in a configuration in which the control device and the plant are combined, the actual operation of the plant during normal operation, so in practice, after operating the plant, the abnormality is determined, Therefore, there is a problem that an abnormality cannot be detected before operation of a plant having such a facility configuration.

FIG. 7 is a block diagram showing a control device 1 having a typical prior art simulation function. The plant 2 to be controlled by the control device 1 having the simulation function (hereinafter, referred to as the control device 1)
Comprises a plurality of actuators 3 and 4, detectors 5 and 6 for converting an operation amount of each actuator 3 and 4 into an electric signal,
And plant equipment 7 constituting plant equipment. The actuators 3 and 4 are actuating devices for changing the operation amount in response to the input control command, and as a result, setting various facilities of the plant equipment 7 in a state according to the control command. , An electric motor, a driving device and their control devices.

The control device 1 includes a simulator unit 8 for simulating the operation of the plant 2, a control unit 9 for controlling the plant 2, and a connection unit for forming a signal transmission path between the control unit 9 and the simulator unit 8. Including 10. Simulator part 8
Receives the signal output from the control unit 9 via the connection unit 10 and simulates the operation of the actuators 3 and 4 and the detectors 5 and 6 according to the signal, and
Actuator models 11 and 12 that output signals corresponding to the amount of operation of the plant, and a plant model 1 that simulates the operation of the plant equipment 7 according to signals from the actuators 3 and 4
And 3.

The control unit 9 is connected to the line L from the plant 2.
A first switching means 14 for switching between a signal transmitted via the lines 1 to L5 and a signal transmitted from the simulator section 8 via the lines L6 to L10, and responds to a signal from the first switching means 14. Command unit 15 for performing calculations for controlling plant 2 by means of
And second switching to one of the simulator units 8
Switching means 16. The connection unit 10 is configured to be able to transmit a signal from the simulator unit 8 to the control unit 9 and to transmit a signal from the control unit 9 to the simulator unit 8 in the opposite direction, and is realized by, for example, a LAN (Local Area Network). You.

In such a conventional control device 1, the first and second switching means 14 and 16 of the control unit 9 operate in conjunction with each other, and when the plant 2 is actually controlled, The connecting side, that is, the lines L1 to L1
It is switched to conduct to the L5 and L11 and L12 sides, and when simulating by the simulator section 8, it is switched to the side connected to the simulator section 8, that is, the side conducting to the lines L6 to L10 and L13 and L14. In this manner, the state in which the operation instruction unit 15 and the plant 2 are connected to each other and the state in which the operation instruction unit 15 and the simulator unit 8 are connected to each other can be selectively switched.

[0013]

According to such a conventional technique, when the plant 2 is actually controlled, the operation command section 15 is connected to the plant 2 and when the simulation operation by simulation is selected. , The calculation command section 15 and the simulator section 8 are connected. In such a configuration, the operation states of the actuators 3 and 4 of the actual machine cannot be confirmed, and the switching between the plant 2 and the simulator unit 8 with respect to the operation command unit 15 is performed collectively. The control unit 9 is an alternative in which only one of the connection to the plant 2 and the connection to the simulator unit 8 is selected. There is a problem that a simulation cannot be performed only for a desired actuator by selection, and the degree of freedom in selection is low.

The first and second switching means 14, 16
Can switch freely from the plant 2 to the simulator unit 8 and from the simulator unit 8 to the plant 2 in the opposite direction, and can therefore switch from the actual control state to the simulation state and to the simulation state Can be switched to the actual control state, but since the switching is possible even during the actual operation of the plant 2, there is a problem that safety is poor.

An object of the present invention is to provide a control device having a simulation function capable of taking as a real machine only a plurality of actuators and an actuator detector for detecting an operation amount of an actuator among plant equipment constituting a plant, and performing a simulation. It is to provide.

It is another object of the present invention to provide a control device having a simulation function capable of arbitrarily selecting and simulating a plurality of actuators.

Still another object of the present invention is to provide a control device having a simulation function capable of preventing switching from a control state to a simulation state during operation of a plant to improve safety. That is.

Yet another object of the present invention is to provide a control device including a simulator for each individual plant such as a steam turbine, a compressor, a gas turbine and a wind tunnel.

[0019]

According to a first aspect of the present invention, there is provided a method for controlling the operation of a plant including a plurality of actuators for operating plant equipment and an actuator detector for detecting an operation amount of each actuator. And a control device having a simulation function of selectively switching the operation of the plant and a simulation state simulating the operation state of the plant. In response to the operation amount of each actuator and the state of the plant, An operation command unit that outputs a control command to the actuator to drive each actuator, and a plant model unit that outputs a plant state simulation signal representing a state simulating the plant in response to a detection signal from the actuator detector Simulator part and signal that detected the state of the plant, or One of the plant state simulation signal output from the emulator unit, a controller having a simulation function, characterized in that it comprises a switching means for selectively directing the operation command unit.

According to the present invention, a plant to be controlled includes a plant device, a plurality of actuators for operating the plant device, and an actuator detector for detecting an operation amount of each actuator. The control device is
The operation of the plant is controlled, and the operation of the plant and the simulation state simulating the operation state of the plant can be selectively switched. The operation command unit controls the operation of each actuator of the plant in response to the input operation amount of each actuator and the state of the plant. The plant model unit outputs a signal representing a state simulating a plant in response to a detection signal from the actuator detector. The switching means is
Either a signal that detects the state of the plant or a plant state simulation signal output from the simulator unit is selectively guided to the operation command unit. When a signal that detects the state of the plant is selected by the switching unit, the operation command unit operates the operation of each actuator based on the detection signal of each actuator detector and the signal that detects the state of the plant, Control plant equipment. Further, when the plant state simulation signal is selected by the switching means, the operation command unit controls the operation of each actuator based on the detection signal of each actuator detector and the plant state simulation signal to control the plant equipment.

In this manner, the operation in response to the control command of each actuator of the actual machine provided in the plant can be taken into the plant model and simulated. The simulation can be performed using only the actuator as the actual machine, and the operating state of each actuator such as operation failure and adjustment can be confirmed without operating the actual plant equipment.

According to a second aspect of the present invention, there is provided an actuator model for outputting a signal simulating an operation amount of an actuator from a control command to the actuator, a detection signal from each actuator detector and an actuator inside the simulator unit. A switching means for selectively outputting one of the output signals from the model to the plant model section, wherein the switching means includes a detection signal from the actuator detector and A switching means for selecting one of the output signals from the actuator model simulating the above and outputting the signal to the operation command section, and individually switching the plant and the simulator for each actuator to perform the simulation. Features.

According to the present invention, the switching means individually switches between the detection signal from the actuator detection unit and the signal simulating the operation amount of the actuator as the operation amount of the actuator, and selectively outputs the signal to the operation command unit. Since guidance can be provided, a plurality of actuators can be arbitrarily selected, and operations such as malfunction and adjustment can be confirmed.

According to a third aspect of the present invention, it is determined whether or not the plant is in an operating state, and when it is determined that the plant is in an operating state, the switching operation of the switching means to the plant model portion is prevented. It is characterized in that it includes a selection judging means for performing.

According to the present invention, the selection determining means
When the plant is actually operating, the switching to the switching means plant model side is prevented, so that the problem that the plant is switched to the simulation state despite the actual operation is prevented. And
Safety is improved.

According to a fourth aspect of the present invention, the plant is one of a steam turbine, a compressor, a gas turbine, and a wind tunnel.

According to the invention, said plant is one of a steam turbine, a compressor, a gas turbine and a wind tunnel, which can be simulated according to the equipment of these plants and which can be widely used in industrial applications. Sex can be achieved.

[0028]

FIG. 1 is a block diagram of a control device 21 having a simulation function according to an embodiment of the present invention. The control device 21 of the present embodiment includes a plant device 22, a plurality of actuators 23 and 24 for changing the operation state of the plant device 22, and an actuator detector 25 for detecting the operation amount of each actuator 23 and 24. , 26 are provided, and a simulation state simulating the operation state of the plant 27 can be selectively switched.

The control device 21 responds to the operation amount of each actuator and the plant state,
And a plant model unit 29 that outputs a signal representing a state simulating the plant 27 in response to a detection signal from each actuator detector. The control unit 28 includes an operation command unit 30 that outputs the control signal to each of the actuators 23 and 24 of the plant 27. The operation command unit 30 includes signals L29 to L31 that detect the state of the plant.
Alternatively, there is provided switching means 31 for selectively guiding any one of the signals L32 to L34 simulating the state of the plant output from the plant model unit 29.

The control unit 28 includes selection determining means 32 for determining whether or not the plant 27 is in the operating state. When the determining means 32 determines that the plant 27 is in the operating state, The switching operation of the means 31 to the plant model unit 29 side can be prevented.

The control signal from the operation command unit 30 is transmitted directly to the actuators 23 and 24 of the plant 27 via the lines L21 and L22. Signals corresponding to the operation amounts of the actuators 23 and 24 are sent from the actuator detectors 25 and 26 via lines L23 and L24, respectively.
The data is transmitted to the control unit 28. This signal is transmitted to the operation command unit 30 of the control unit 28, and is branched to the line L.
The data is transmitted to the simulator unit 33 via the transmission lines 23a and L24a. The branched lines L23a and L24a are:
It is included in the connection part 34. This connection unit 34 may be realized by, for example, a bus line.

The switching means 31 is configured to switch the switching mode in response to a selection signal transmitted from the selection judging means 32 via the line L25 indicating whether the apparatus is an actual apparatus or a simulation. Is selected so that each common contact 35 is connected to the individual contact 36 on the plant 27 side. When the selection signal selects “simulator” and simulates it in the simulator unit 33, each common contact 35 Switching is performed so as to be connected to each individual contact 37 on the simulator section 33 side.

By such switching, the operation command unit 30
And the plant 27 is connected to the lines L21-L24, L29-
The control state connected by L31 and the operation command unit 30
And the simulator unit 33 and the plant 27 are connected to the lines L21 to L24, L23a, L24a, L32 to L3.
4 can switch the connected simulation state.

The selecting means 38 outputs a request signal indicating whether to select the plant 27 or the simulator section 33. The output request signal is transmitted to the selection judging means 32 via the line L26. Is done.

The selection judging means 32 receives a signal transmitted from the plant 27 via the lines L27 and L28 and a request signal transmitted from the selecting means 38, and in response to these input signals, selects the selection signal. Is output. Here, the signal transmitted from the plant 27 is
Is not supplied with energy for operation, for example, a signal indicating that a shut-off valve for a working fluid such as steam and air is fully closed, and that a circuit breaker that disconnects a generator or an electric motor from an electric system is released. And so on.

The selection judging unit 32 requests the simulator unit 33 by the request signal transmitted from the selecting unit 38, and determines that the signal from the plant 27 is in a state where the supply of energy to the plant 27 is cut off. Only when this is indicated, a signal for selecting the simulator unit 33 is output, and when the other state, that is, the state where the supply of energy to the plant 27 is not interrupted, is indicated, And outputs a signal for selecting.

In the control device 21 of the present embodiment, since the output of the operation command unit 30 is always output to the actuators 23 and 24, the switching unit 31 is switched to the simulator unit 33.
Or the actual plant 27 is selected. Simulator 33
Always follows the operation of the actuators 23 and 24,
The state of the plant 27 is simulated. Thus, the operation of the switching means 31 causes the actuators 23, 2 of the actual machine to operate.
4 can be switched between the simulated operation by the simulator unit 33 and the actual operation by the plant 27.

Further, in the selection judging means 32, the plant 2
Switching to the simulator section 33 is allowed only when energy is supplied to the fuel cell 7, so that when the plant 27 is operating, actual operation is always performed and safety is improved.

The simulated operation is performed by the actuator 2
The present invention is effective not only for discovering the abnormalities of 3, 24 but also for education such as operation training of an operator. In this case, each actuator 23, 24
Since only the operation is performed, energy for operating the plant 27 is unnecessary, and it is economical and safe even if an abnormality occurs. In a normal plant, most of the components except for power devices such as a pump and a compressor are actuators. Therefore, by using an actual device for the actuator, it is possible to simulate an actual operating state. Further, the actuators 23 and 24
Since it frequently operates during the operation of the plant 27, the frequency of occurrence of a failure is high, and the use of only the actuators 23 and 24 in the actual machine is extremely useful from the viewpoint of detecting an abnormality.

According to the present embodiment, the plant 27 to be controlled includes the plant equipment 22 and the plurality of actuators 2 for operating the plant equipment 22.
3 and 24, and actuator detectors 25 and 26 for detecting the operation amounts of the actuators 23 and 24, respectively. The control device 21 is configured to control the operation of the plant 27 and to selectively switch the operation of the plant 27 and a simulation state simulating the operation state of the plant 27. In response to the detection signals L23 and L24 from the actuator detectors and the signals L29 to L31 that detect the state of the plant, the operation of each of the actuators 23 and 24 of the plant 27 is controlled. Further, the plant model unit 29 divides the detection signals L23 and L24 from the actuator detector into L23
a, and outputs a signal representing a state simulating the plant 27 in response to L24a. The switching unit 31 outputs one of the signals L29 to L31 that detect the state of the plant or the signals L32 to L34 that simulate the state of the plant 27,
It is selectively guided to the operation command unit 30.

When the plant 27 is selected by such a switching means 31, the operation command section 30 makes a determination based on the detection signals of the actuator detectors 25 and 26 and the signals L29 to L31 that detect the state of the plant. The operation of each of the actuators 23 and 24 is operated, and the plant equipment 2
2 is controlled. When the simulator unit 33 is selected by the switching unit 31, the operation command unit 30 outputs the detection signals L23, L2 of the actuator detectors 25, 26.
The actuators 23 and 24 are driven based on a signal representing a state in which the plant 27 is simulated based on L23a and L24a branched from 4.

In this manner, the operation in response to the control commands of the actuators 23 and 24 of the actual machine provided in the plant 27 can be taken into the plant model unit 29 and simulated. The simulation can be performed using only the plurality of actuators 23 and 24 to be used as actual machines.
This can be confirmed without operating the actual plant equipment 22.

When the plant 27 is actually operated by the selection judging means 32, the switching means 3
1 is prevented from being switched to the plant model unit 29 side, even though the plant 27 is actually operated.
The problem of switching to the simulation state is prevented, and safety is improved.

FIG. 2 is a block diagram of a control device 21a having a simulation function according to another embodiment of the present invention. Note that parts corresponding to those in the above-described embodiment are denoted by the same reference numerals. In the above-described embodiment, all the actuators 23 and 24 always operate. However, when it is not desired to operate a specific actuator, for example, when the actuator is out of order or when it is desired to check the function after repairing the actuator, or when the specific actuator is not operated. There are various demands such as when it is desired to operate only the actuator of the control device 21 according to the present embodiment in order to satisfy such demands.
a is preferably used.

The simulator section 33 includes actuators 23 and 24 and actuator detectors 25 and 26.
Corresponding to each of the actuator models 41 and 42 and each of the actuators 23 and 24 individually, and the actuators 23 and 24 and the actuator detectors 25 and 26 of the actual machine.
And switching means 43 for selecting one of the actuator models 41 and 42. The switching means 43 includes a plurality of individual changeover switches 4
4,45.

Further, as for the signal for detecting the amount of operation of each actuator, since it is necessary to select the actual machine and the model, each of the actuator detectors 2 attached to each of the actuators 23 and 24 by the switching means 31 in the control unit 28.
5 and 26 via lines L23 and L24, and signals from simulator unit 33 via lines L41 and L4.
2 and the signal transmitted via the second switch. With such a configuration, each of the changeover switches 44, 4 of the changeover means 43
By switching 5 to either the real machine or the model, simulation by a free combination of the real machine and the simulator becomes possible.

According to the present embodiment, the switching means 43 individually switches the detection signals of the actuator detectors 25 and 26 and selectively switches between the operation command unit 30 and the plant model unit 29. Since the guidance can be performed, a plurality of actuators 23 and 24 can be arbitrarily selected, and operations such as malfunction and adjustment can be confirmed.

FIG. 3 is a block diagram of a control device 21b having a simulation function according to still another embodiment of the present invention. The plant 27 of the present embodiment is a steam turbine power plant, and includes a steam turbine 51, a pipe 52 for introducing steam to the steam turbine 51, and a pipe attached to the pipe 52, and converts the steam pressure in the pipe 52 into an electric signal. Pressure detector 53, a shut-off valve 54 for shutting off steam supplied to the steam turbine 51, a shut-off valve detector 55 for detecting the open / close state of the shut-off valve 54, A flow control valve 56 for adjusting the flow rate, a valve opening detector 57 that converts the opening of the flow control valve 56 into an electric signal and outputs the electric signal, an exhaust duct 58 that guides exhaust flowing out of the steam turbine 51 to the outside, steam Turbine 5
1, a generator 59 that is rotationally driven by 1, a circuit breaker 61 for disconnecting the generator 59 from an external power supply system 60,
A rotation speed detector 62 that converts the rotation speed of the steam turbine 51 into an electric signal and outputs the electric signal, a power detector 63 that converts the output of the generator 59 into an electric signal and outputs the electric signal, and the circuit breaker 61
Is open, that is, a power cutoff detector 64 for detecting a state disconnected from the power supply system 60.
including.

The steam turbine power plant 27 is a facility for generating power by rotating the steam turbine 51 by steam sent through a pipe 52 and rotating and driving a generator 59 by the steam turbine 51. The power generated by the generator 59 is supplied to an external power supply system 60 via a circuit breaker 61. In this plant 27, any one of the number of revolutions of the steam turbine 51, the output of the generator 59, and the steam pressure is selected according to the operating conditions.
First, the opening of the flow control valve 56 is adjusted based on the value detected by the valve opening detector 57 so that the opening of the flow control valve 56 becomes a set value. Is
It is output from the operation command unit 30 of the control unit 28 via a line L51.

In this steam turbine power plant 27,
When the shut-off valve 54 is fully closed and the circuit breaker 61 is open, no energy is supplied from the outside. Therefore, the selection judging means 32 sets the shut-off valve 54 transmitted via the line L52 to Only when both the signal indicating that the circuit breaker is fully closed and the signal indicating that the circuit breaker 61 transmitted via the line L53 is open is established, the switching unit 31 of the control unit 28 sets the simulator. It is configured such that a contact is conducted to the part 33 side.

The plant 27 is provided with a flow control valve 56 as an actuator. The actuator model 65 simulates the response of the flow control valve 56 and outputs a signal indicating the state of the flow control valve 56 by calculation. Is configured as Also, the plant model unit 29
Is a part for performing an operation to simulate the response of the state of the plant 27 including the steam turbine 51 and the generator 59 constituting each of the above-described plant equipment 22, and is detected by the steam detectors 53, 62, 63. The simulator is configured to output a simulation signal corresponding to each detected signal.

The switching means 66 provided in the simulator section 33 is for selecting which of the actual machine of the flow rate adjusting valve 56 for adjusting the steam amount and the actuator model 65 is used. That is, when the common contact 68 is connected to the actual device side individual contact 67,
Since the actual response signal of the flow control valve 56 is input to the plant model unit 29, the plant model unit 29 shows a response signal equivalent to the flow control valve 56. Is shut off, so that the steam turbine 51 is not operated. Conversely, when the switching means 66 is connected to the simulator side, that is, when the model-side individual contacts 69 and the common contacts 68 are connected, the actuator model 6
Since the response signals of No. 5 are input, all of them are simulated by the simulator unit 33.

FIG. 4 is a block diagram of a control device 21c having a simulation function according to still another embodiment of the present invention. Note that parts corresponding to the above-described embodiments are given the same reference numerals. This embodiment is an example in which the control device 21c of the present invention is applied to a compressor plant 27. The compressor plant 27 has a compressor 74 having a variable stationary blade 73 for adjusting the amount of gas flowing into the inside, a pipe 75 on the inlet side of the compressor 74, and a pressure in the pipe 75 provided in the pipe 75. A pressure detector 76 that converts the signal into a signal and outputs the signal; a temperature detector 77 that is provided in the pipe 75 and converts the temperature of the gas in the pipe 75 into an electric signal and outputs the signal;
A flow rate detector 78 that converts a gas flow rate in a pipe 75 into an electric signal and outputs the electric signal, a pipe 79 on the outlet side of the compressor 74, and an outlet pipe 79.
Pressure detector 80 which converts the pressure in the inside into an electric signal and outputs it
including.

The inlet side pipe 75 and the outlet side pipe 79 are connected via a surge pressure regulating valve 81. When the surge pressure regulating valve 81 is opened, the outlet side pipe 79 is connected in accordance with the opening degree. The internal fluid is returned to the inlet pipe 75, and the flow rate passing through the compressor 74 increases. The compressor 74 is driven by the electric motor 82. Electric power to the electric motor 82 is supplied from an external electric power supply system 60 via a circuit breaker 61 for interrupting electric power.

In the compressor plant 27, the inlet pipe 7
5 is pressurized by a compressor 74 driven by an electric motor 82 and the outlet side pipe 79
At this time, the variable stationary blade 73 provided inside the compressor 74 is controlled so that the pressure of the outlet pipe 79, that is, the pressure detected by the pressure detector 80 becomes a predetermined value. Thus, the flow rate of the fluid passing through the compressor 74 is adjusted. That is, a required variable vane angle corresponding to the pressure detected by the pressure detector 80 is calculated by the calculation command unit 30, and the result is used as a driving unit 83 for the variable vane 73.
To communicate. The variable vane driving unit 83 changes the pitch angle of the variable vanes 73 in response to a signal transmitted from the calculation command unit 30 via the line L22, and the blade angle detector 84 Angle control unit 28
Is transmitted to the calculation command unit 30.

In such a configuration, when the compressor 74 is operated, when the flow rate of the fluid passing through the compressor 74 is small relative to the pressure of the fluid, a problem called surging in which the operation of the compressor 74 becomes unstable is caused. . Therefore, part of the fluid is transferred from the outlet pipe 79 to the inlet pipe 7.
5 and the flow rate of the fluid passing through the compressor 74 is increased to maintain stable operation. The surge pressure regulating valve 81 is an actuator for that purpose. In the arithmetic command unit 30, the pressure detector 76 in the pipe 75 on the inlet side is used.
The pressure detected by the temperature detector 77, the flow rate detected by the flow rate detector 78,
And the surge pressure detector 8 in the outlet pipe 79.
The required valve opening is calculated from the pressure detected by 0, and the surge pressure regulating valve 81 is controlled.

The simulator unit 33 is provided for the compressor plant 2
7, a plant model unit 29 for calculating a response signal of a compressor 74 which is a plant device, a variable vane driving unit 83 as an actuator, and a blade angle detector 8
4 simulator model 86, pressure regulating valve 81 for surge
And simulator model 87 of its valve opening detector 85
including.

The selection of the simulator unit 33 by the switching unit 31 of the control unit 28 is performed by selecting the electric motor 8 that drives the compressor 74.
Since the condition is that the circuit breaker 61 is open, the detector 6 detects that the circuit breaker 61 is open.
The switching is permitted only when the circuit breaker 61 is in the open state by the signal output from the switch 4. The other actuator switching is the same as in each of the above-described embodiments.

FIG. 5 is a block diagram of a control device 21d having a simulation function according to still another embodiment of the present invention. Note that the same reference numerals are given to parts corresponding to the above-described embodiment. The plant 27 of the present embodiment is a gas turbine power plant, and includes a gas turbine 91, a generator 92 driven by the gas turbine 91, an external power supply system 60 to which power generated by the generator 92 is supplied, and It includes a circuit breaker 61 for cutting off between the generator 92 and the power supply system 60.

The fuel supplied to the gas turbine 91 is supplied from the pipe 93 to the gas turbine 91 via the shut-off valve 94 and the flow control valve 95. The shutoff valve 94 includes:
A shutoff valve detector 96 for detecting that the valve is fully closed is provided, and a flow rate adjusting valve 95 is provided with a valve opening detector 97 for converting a valve opening into an electric signal and outputting the electric signal. The device 61 is provided with a power cutoff detector 64 for detecting that it is open, that is, in an electrically cutoff state.

Further, as a detector for controlling the gas turbine 91, a temperature detector 98 for detecting the temperature of the gas after burning the fuel, a rotation speed of the gas turbine 91 and conversion into an electric signal. A rotational speed detector 99 for outputting the electric power and a power detector 100 for converting electric power generated by the generator 92 into an electric signal and outputting the electric signal are provided. The gas turbine 91
Control is performed by selecting each control of the gas temperature, the number of revolutions, and the electric power in accordance with the operation status, and driving the flow control valve 95 in accordance with the result to adjust the flow rate of the fuel.

The control device 21d having the above configuration
In the above, when the circuit breaker 61 is open and the shut-off valve 94 is fully closed, the gas turbine 91 is not operated. Therefore, when the detection results by the detectors 96 and 97 are found in those conditions. The selection judging means 32 is configured so that the switching to the simulator section 33 is possible only in the above. The simulator unit 33 includes the flow control valve 95 provided as an actuator in the gas turbine power plant 27 and a valve opening detector 97 thereof.
An actuator model 101 is provided to simulate the flow rate. The switching means 66 selectively switches between a flow control valve 95 which is an actual actuator and an actuator model 101 which simulates the flow control valve 95 to the plant model section 29. Can be connected.

FIG. 6 is a block diagram of a control device 21e having a simulation function according to still another embodiment of the present invention. Note that the same reference numerals are given to portions corresponding to the respective embodiments described above. The plant 27 of the present embodiment is a blow-out type wind tunnel, and has an air storage tank 112 for storing high-pressure air, a shutoff valve 113 for shutting off the air stored in the air storage tank 112, and a wind tunnel main body 114.
including. The shutoff valve 113 is provided with a shutoff valve detector 115 for detecting that the shutoff valve 113 is fully closed.

The wind tunnel main body 114 includes a collecting cylinder 116 for setting the high pressure air to a predetermined pressure, a variable nozzle 117 for accelerating the high pressure air to obtain a required speed, a measuring unit 118 for performing a wind tunnel test, and a high speed And a throat 119 for decelerating the airflow of the vehicle.

Inside the collecting cylinder 116, there are provided a flow control valve 120 for adjusting the air flow rate and a pressure detector 121 for detecting the air pressure in the collecting cylinder 116. The variable nozzle 117 is provided with a flexible wall (not shown) provided on the left and right or up and down or a nozzle driving unit 122.
It is configured such that a predetermined shape can be obtained by being deformed. Nozzle driving means 122
Is configured so that the shape of the nozzle can be adjusted in accordance with a command signal transmitted from the calculation command unit 30 via the line L62, and the result is converted into the nozzle Mach number, The Mach number is output via a line L73.

The measuring section 118 includes the model supporting device 12.
3 is installed, the model to be measured is supported in the measuring section, and the position and orientation of the model in the high-speed airflow can be controlled by a plurality of actuators 124 to 126 provided in the spring model support device 123. It is composed of Each of the actuators 124 to 126 is provided with a position detector 128 to 130 for detecting its position.
Each position is converted into an electric signal and output.

The throat 119 is configured to move the left and right walls to change the cross-sectional area of the passage, and the opening area can be adjusted according to the test conditions of the wind tunnel equipment.
Driven by the actuator 127. The actuator 127 is provided with a position detector 131, which converts the position into an electric signal and outputs it.

The operation command section 30 adjusts the opening of the flow control valve 120 so that the pressure of the collecting cylinder 116, that is, the pressure detected by the pressure detector 121, becomes a predetermined value. Further, a command is output to the nozzle driving means 122 to change the variable nozzle 117 into a predetermined shape. Furthermore, each actuator 1 provided in the model support device 123
Commands are output to 24 to 126 to control the position and orientation of the model. Further, a command is output to an actuator 127 provided in the throat 119 to control the opening area of the throat 119 to a predetermined value.

The above-mentioned blow-out type wind tunnel plant 27 is provided with a flow control valve 120, a nozzle driving means 122, actuators 124 to 126 provided in the model support device 123 and an actuator 127 provided in the throat 119 as actuators. And the actuator models 133 to 138 are
3, the actuators 124 to 127 or the actuator models 133 to 138 of the actual machine are individually selected by the switching unit 43 on the simulator unit 33 side.
It is possible to switch between the actual control state and the simulation state.

Further, switching to the simulator section 33 by the switching means 31 of the control section 28 is enabled only when the shut-off valve 113 is fully opened. When the simulator section 33 is selected, the high-pressure airflow is applied to the wind tunnel main body 114. It is prevented from being supplied into.

As in the above embodiments, as a method of using the simulator unit 33, the simulator unit 33 is incorporated as a part of the control units 21 and 21a to 21e, and is controlled by the control units 21 and 21a to 21e. Actuators such as valves use actual equipment, and if the response of the operating system controlled by the actuator after processing is calculated by a simulation device, a steam turbine,
For various plants 27 such as compressors, gas turbines and wind tunnels, only the actuator can be simulated using actual equipment before starting, achieving versatility or high industrial applicability. be able to.

[0072]

According to the first aspect of the present invention, the operation in response to the control command of each actuator of the actual machine provided in the plant can be simulated by being taken into the plant model section. Can be simulated using only a plurality of actuators provided in the actual machine, and the operating state of each actuator, such as operation failure and adjustment, can be confirmed without operating the actual plant equipment.

According to the second aspect of the present invention, the detection signal of each actuator detector can be individually switched by the switching means, and can be selectively guided to the operation command section and the plant model section. By arbitrarily selecting the actuator, the operation such as malfunction and adjustment can be confirmed.

According to the third aspect of the present invention, when the plant is actually operated by the selection judging means, the switching of the switching means to the plant model portion is prevented, so that the plant is not actually operated. The problem of being switched to the simulation state in spite of driving is prevented, and safety is improved.

According to the present invention, the plant is one of a steam turbine, a compressor, a gas turbine and a wind tunnel, and can be simulated according to the equipment of these plants. A wide range of industrial applications can be achieved.

[Brief description of the drawings]

FIG. 1 is a block diagram of a control device 21 having a simulation function according to an embodiment of the present invention.

FIG. 2 is a block diagram of a control device 21a having a simulation function according to another embodiment of the present invention.

FIG. 3 is a block diagram of a control device 21b having a simulation function according to still another embodiment of the present invention.

FIG. 4 is a block diagram of a control device 21c having a simulation function according to still another embodiment of the present invention.

FIG. 5 is a block diagram of a control device 21d having a simulation function according to still another embodiment of the present invention.

FIG. 6 is a block diagram of a control device 21e having a simulation function according to still another embodiment of the present invention.

FIG. 7 is a block diagram showing a control device 1 having a typical conventional simulation function.

[Explanation of symbols]

 21, 21a to 21e Control device 22 Plan and equipment 23, 24; 124 to 127 Actuator 25, 26 Actuator detector 27 Plant 28 Control unit 29 Plant model unit 30 Calculation command unit 31 Switching unit of control unit 28 Selection selection unit 33 Simulator 38 Selection means 41, 42 Actuator model 43 Switching means of simulator 33 51 Steam turbine 73 Variable vane 91 Gas turbine 114 Wind tunnel main body

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) F01K 23/10 F01K 23/10 NG09B 9/00 G09B 9/00 A F-term (reference) 3G071 AB01 BA01 BA25 BA31 CA08 EA00 FA00 GA00 HA00 JA03 3G081 BA02 BA11 BB00 BC07 BD00 DA01 DA11 DA16 DA21 DA26 DA30 5H004 GA27 GB04 HA07 HB02 HB03 HB07 JB09 JB10 LB04

Claims (4)

[Claims] An operation of a plant including a plurality of actuators for operating plant equipment and an actuator detector for detecting an operation amount of each actuator is controlled, and an operation of the plant and an operation state of the plant are provided. A control device having a simulation function of selectively switching between a simulation state and a simulation state that simulates the state of the actuator, in response to the operation amount of each actuator and the state of the plant, outputs a control command to each actuator of the plant to drive each actuator A simulator unit having a plant model unit that outputs a plant state simulation signal representing a state of simulating a plant in response to a detection signal from an actuator detector; and a signal that detects a plant state. Plant output from simulator A control device having a simulation function, comprising: switching means for selectively guiding any one of the state simulation signals to an operation command unit. 2. An actuator model for outputting a signal simulating an operation amount of an actuator from a control command to an actuator, a detection signal from each actuator detector, and an output signal from the actuator model. A switching means for selectively outputting either one of the signals to the plant model unit. The switching means includes a detection signal from the actuator detector and an actuator model simulating the detection signal from the actuator model in conjunction with the switching means inside the simulator unit. 2. The simulation according to claim 1, wherein a switching means for selecting one of the output signals and outputting the selected signal to an operation command unit is added, and the plant and the simulator are individually switched for each actuator, thereby enabling simulation. A control device having a simulation function. And determining whether or not the plant is in an operating state. When determining that the plant is in an operating state, the system includes a selection determining means for preventing a switching operation of the switching means to the simulator unit side. A control device having a simulation function according to claim 1 or 2. 4. The control device having a simulation function according to claim 1, wherein the plant is one of a steam turbine, a compressor, a gas turbine, and a wind tunnel. .