JPH11324611A - Automatic turbine controller - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To significantly improve simulation efficiency and reliability. A switching section (4a) receives a main steam stop valve bypass valve opening input signal (a1) and outputs the signal to a turbine control calculation section (2), and a simulation signal of the main steam stop valve bypass valve opening simulation calculation section (3a). The main steam stop valve bypass valve opening simulation signal b1 is input to the turbine control arithmetic unit 2
Switch to and output. The switching unit 4b receives the turbine speed input signal a2 and outputs the signal to the turbine control calculation unit 2, and receives the turbine speed simulation signal b2 of the turbine speed simulation calculation unit 3b based on the simulation signal to input the turbine speed calculation signal b2. 2 and output. The switching unit 4f includes:
The output of the main steam stop valve bypass valve drive signal d1 of the turbine control calculation unit 2 to the outside is prevented by the simulation signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic turbine control device suitable for testing a turbine automatic control device that performs turbine start control or generator output control.

[0002]

FIG. 9 is a block diagram showing a conventional automatic turbine control device.

In FIG. 9, an automatic turbine control device 1
Has a turbine control operation unit 2 and an external input / output connection unit 5, and is connected by the external input / output connection unit 5 with various signal lines between the automatic turbine control device 1 and the simulation operation device 3. I have. Further, the simulation device 3 includes a main steam stop valve bypass valve opening simulation unit 3a, a turbine speed simulation unit 3b, a generator output simulation unit 3c, a variable valve opening simulation unit 3d, and a variable valve opening. Command simulation unit 3e.

The external input / output connection unit 5 of the automatic turbine controller 1 is connected to the following signal lines of various turbine plants (1) to (4).

(1) The external input / output connection unit 5 is
Main steam stop valve bypass valve driving device 2 for driving a main steam stop valve bypass valve 25 provided in a line for supplying steam to the fuel cell 1
6 and further to a main steam stop valve bypass valve opening detector 27.

(2) The external input / output connection unit 5 is connected to a control valve drive device 29 for driving the steam control valve 28 and a control valve opening detector 30.

(3) The external input / output connection unit 5 is connected to the control valve output command signal output device 32. The external input / output connection unit 5 is connected to a turbine speed detector 23.

(4) The external input / output connection unit 5 includes a generator 22 connected to the turbine 21 and a generator output detector 24.
And connected to.

After the design and manufacture of the automatic turbine control device 1, an operation check test is performed at a factory and then shipped. After installation work is performed at a power plant, an on-site adjustment test is performed and operation starts.

When an operation check test is performed in a factory after the automatic turbine control device 1 is manufactured, several test items are required. Among them, a simulation test is a particularly important test item. In the simulation test of the factory, since the actual turbine 21 and the generator 22 cannot be prepared, a simulation operation device 3 is manufactured instead, and connected to the automatic turbine control device 1, and the main steam stop valve of the simulation operation device 3 By the simulation signals output from the bypass valve opening degree simulating section 3a, the regulating valve opening degree simulating section 3d, the regulating valve opening degree command simulating section 3e, the turbine speed simulating section 3b, and the generator output simulating section 3c. Automatic turbine control device 1
It is confirmed that the turbine control calculation unit 2 in the inside is operating properly.

[0011] After that, it is shipped to the site, installation work is performed, and an adjustment test is performed after the cable is laid. Among these tests, a simulation test is performed. Since the on-site simulation test is performed before the plant operation, the turbine 21 and the generator 22 cannot be actually operated during the simulation test. Therefore, in order to perform a simulation test, the simulation operation device 3 used for the factory test is brought to the site as in the case of the automatic turbine control device 1.

That is, after the simulation operation device 3 is installed in the vicinity of the turbine automatic control device 1 on the site, it is connected to the external input / output connection portion 5 in the turbine automatic control device 1 by hard wiring. The hard wiring such as the detector and the driving device is removed, and the external input / output connection unit 5 and the simulation device 3 are connected. Thereby, the main steam stop valve bypass valve simulating section 3a, the regulating valve opening degree simulating section 3d, the regulating valve opening command simulating section 3e, the turbine speed simulating section 3b, and the generator output simulating of the simulating device 3. Turbine automatic control device 1 based on a simulation signal output from arithmetic unit 3c
It is confirmed whether the turbine control operation unit 2 in the inside is operating properly.

After the simulation test, the connection between the external input / output connection unit 5 and the simulation operation unit 3 is disconnected, and the external input / output connection unit 5 is connected to a detector, a driving device, and the like. A confirmation test must be performed.

[0014] The turbine control will be described with reference to FIG. 9.
Steam control valve 2 to prevent partial overheating of turbine metal
8 is fully opened, steam is supplied to the entire periphery of the turbine 21 by adjusting the throttle of the main steam stop valve bypass valve 25, and turbine start control is performed by adjusting the main steam stop valve bypass valve 25. In this turbine start-up control, the rate of opening adjustment of the main steam stop bypass valve 25 is calculated by the turbine control calculation unit 2 of the automatic turbine control device 1. The calculation is performed by the turbine speed detector 23 (after the breaker is turned on). It is necessary to input data from the generator output detector 24), the main steam stop valve bypass valve opening detector 27, and the regulating valve opening detector 30. Alternatively, after the start-up control is completed, the process proceeds to the opening control of the steam control valve 28 or the main steam stop valve bypass valve, and the generator control is performed by the steam control valve 28.

[0015]

As described above, conventionally, a great deal of time and effort is required for preparation for performing a simulation test. Particularly, for a simulation test on site, not only at the time of delivery but also at the time of periodic inspection. And remodeling work, etc., each time, send the simulation device 3 from the factory,
Since the work of connecting and restoring the hard wiring is not required, the accompanying work was enormous.

Further, the simulation operation device 3 is moved every time a simulation test is performed, and a test is performed. In the field test, there is a restoration work after the completion of the test, and there is a possibility that connection and restoration work errors may occur. There was a problem with quality control.

The simulation device 3 is not manufactured for each turbine automatic control device 1, but is often shared with a plurality of turbine automatic control devices. Before the simulation test, the simulation calculation device 3 is used based on plant data. He had to make his own adjustments.

In view of the above, the present invention reduces the time and work errors involved in connecting and restoring a simulation operation device and an automatic turbine control device when performing a simulation test, and facilitates a simulation test in a factory test and a field test. It is an object of the present invention to provide a turbine automatic control device that can be performed at a time.

[0019]

According to a first aspect of the present invention, a turbine start control operation for controlling the opening of a main steam stop valve bypass valve is performed based on a turbine plant state signal, and the turbine start control calculation is performed based on a turbine plant state signal. A main steam stop valve bypass valve, or a turbine control calculation unit that performs a generator output control calculation for performing opening control with the steam control valve;
A simulation operation unit that generates and outputs various turbine plant simulation signals for simulating the turbine control operation unit, and a control signal obtained by inputting a turbine plant state signal to the turbine control operation unit and executing a control operation to the turbine plant. On the other hand, at the time of the simulation, the simulation is switched to input the turbine plant simulation signal from the simulation calculation unit to the turbine control calculation unit instead of the turbine plant state signal and execute the simulation control calculation to output the obtained simulation control signal. A switching unit is provided. According to this means, the turbine automatic control unit generates a simulation signal for simulating a turbine control operation unit that performs a turbine start control operation and a generator output control operation by a main steam stop valve bypass valve or a steam control valve. Since the apparatus is provided in the apparatus so that the state signal of the turbine plant and the simulation signal can be appropriately switched, it is not necessary to separately install a simulation operation apparatus when necessary as in the related art. Therefore, the efficiency and reliability of the simulation can be greatly improved.

A second aspect of the present invention is a turbine control operation unit for performing a generator output control operation for controlling an opening degree of a main steam stop valve bypass valve or a steam control valve based on a turbine plant state signal; A simulation operation unit that generates and outputs various turbine plant simulation signals necessary to simulate the generator output control operation of the turbine control operation unit, and a turbine plant state signal is input to the turbine control operation unit to perform the generator output control operation. While the control signal obtained by the execution is output to the turbine plant, at the time of the simulation, a turbine plant simulation signal from the simulation operation unit is input to the turbine control operation unit instead of the turbine plant state signal to execute the generator output control simulation operation. And a switching unit that switches so as to output the simulation control signal obtained by the execution. According to this means, the turbine automatic control device is provided with a simulation operation unit that generates a simulation signal for simulating a turbine control operation unit that performs a generator output control operation by a main steam stop valve bypass valve or a steam control valve, Since the turbine plant state signal and the simulation signal can be appropriately switched, there is no need to install a separate simulation operation device when necessary as in the related art. Therefore, the efficiency and reliability of the simulation can be greatly improved.

According to a third aspect of the present invention, there is provided a turbine control operation unit for performing a turbine start control operation for controlling an opening degree of a main steam stop valve bypass valve based on a turbine plant state signal, and a turbine start control of the turbine control operation unit. A simulation operation unit that generates and outputs various turbine plant simulation signals necessary for simulating the operation, and a control signal obtained by inputting a turbine plant state signal to the turbine control operation unit and executing a turbine startup control operation to the turbine plant. On the other hand, at the time of simulation, a turbine plant simulation signal from the simulation operation unit is input to the turbine control operation unit instead of the turbine plant state signal, and a simulation control signal obtained by executing the turbine start control simulation operation is output. And a switching unit for switching in such a manner.
According to this means, the simulation control section for generating a simulation signal for simulating the turbine control calculation section for performing the turbine startup control calculation is provided in the turbine automatic control device, and the turbine plant state signal and the simulation signal can be appropriately switched. Therefore, it is no longer necessary to separately install a simulation device when necessary, as in the related art. Therefore, the efficiency and reliability of the simulation can be greatly improved.

According to a fourth aspect of the present invention, a turbine start control calculation for controlling the opening of the main steam stop valve bypass valve is executed based on the main steam stop valve bypass valve opening input signal and the turbine speed input signal. Means for generating and outputting the main steam stop valve bypass valve drive signal, and a generator for controlling the opening of the main steam stop valve bypass valve or the control valve based on the generator output input signal and the generator output command signal A means for executing an output control operation and generating and outputting a main steam stop valve bypass valve drive signal or a control valve drive signal, or opening and closing the control valve based on a control valve opening command signal and a control valve opening signal. Control unit having means for executing a generator output control operation for degree control to generate and output a control valve drive signal, and a main steam stop valve bypass simulating a main steam stop valve bypass valve opening input signal A main steam stop valve bypass valve opening simulation unit that generates and outputs an opening simulation signal, a turbine rotation simulation unit that generates and outputs a turbine rotation simulation signal that simulates a turbine rotation input signal, and a generator output input signal A generator output simulation unit that generates and outputs a generator output simulation signal that simulates a control valve opening and closing valve, and an adjustment valve opening simulation unit that generates and outputs an adjustment valve opening simulation signal that simulates an adjustment valve opening input signal. A simulation operation unit including an adjustment valve opening command simulation unit that generates and outputs an adjustment valve opening command simulation signal that simulates an opening command signal, and a main steam stop valve bypass valve opening input signal to the turbine control calculation unit. While inputting and executing the control operation,
A first switching unit for inputting a simulation signal of a main steam stop valve bypass valve opening degree by a first simulation signal and performing a simulation control operation, and a control operation by inputting a turbine speed input signal to a turbine control operation unit; And a second switching unit for inputting a turbine rotation speed simulation signal by the second simulation signal to perform a simulation control operation, and inputting a generator output input signal to the turbine control operation unit to perform a control operation. While the third
A third switching unit that inputs a generator output simulation signal by a simulation signal to perform a simulation control operation, and a control valve execution unit that inputs a control valve opening input signal to a turbine control operation unit to execute a control operation. (4) a fourth switching unit for inputting an adjustable valve opening simulation signal according to a simulation signal to perform a simulation control operation, and executing a control operation by inputting an adjustable valve opening input signal to a turbine control arithmetic unit; A fifth switching unit for inputting a control valve opening degree simulation signal based on the fifth simulation signal and performing a simulation control operation, and a main steam stop valve bypass generated and output by the turbine control operation unit. While the valve drive signal is output to the main steam stop valve bypass valve, the main steam stop valve bypass valve drive signal is output by the first simulation signal. A first signal output blocking unit for blocking output to the main steam stop valve bypass valve and a control valve drive signal generated and output by the turbine control calculation unit to the control valve, while controlling the control valve by a fourth simulation signal A signal output blocking unit including a second signal output blocking unit that blocks output of the drive signal to the control valve; and a first switching unit to a fifth switching unit that can individually switch the first to fifth simulation signals. The switching units are individually switched according to the purpose, and means for individually operating the first signal output blocking unit and the second signal output blocking unit according to the purpose are provided. According to this means, it is possible to simulate only a part of the turbine control calculation unit or a combination of the parts according to the purpose of the simulation, so that a more accurate and reliable simulation can be executed.

The invention according to claim 5 is the invention according to claims 1 to 4.
In any of the above-described automatic turbine control devices, a simulation is performed by outputting a simulation signal to the switching unit and the signal output blocking unit only when a turbine trip signal is input during a simulation. According to this means, the simulation can be performed only when the turbine trip signal is input.
Safe work can be ensured and adverse effects on the plant can be avoided.

The invention of claim 6 is the invention of claims 1 to 4
The automatic turbine control device according to any one of the preceding claims, further comprising means for displaying a switching state of the switching unit and the signal output blocking unit, or means for displaying control calculation contents or simulation calculation contents by the turbine control calculation unit. It is. According to this means, whether or not the simulation is being performed is displayed, so that the test operation can be efficiently performed in a short time.
Since the content of the control calculation or the content of the simulation calculation is displayed, the test operation can be performed easily and efficiently, and a reliable simulation can be performed. The simulation can be performed not only by the manufacturer but also by the user himself.

[0025]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a configuration diagram of an automatic turbine control device according to a first embodiment of the present invention.

In FIG. 1, the same reference numerals as those in FIG. 9 showing the prior art denote the same or corresponding parts, and the first embodiment shown in FIG. A simulation unit 3A having a valve bypass valve opening degree simulation unit 3a and a turbine rotation speed simulation unit 3b, and a switching unit 4
a and the switching unit 4b are provided in the automatic turbine control device 1A, and the feature is that a simulation of the opening degree of the main steam stop valve bypass valve and the turbine speed is executed.

The automatic turbine control device 1A comprises a turbine control operation unit 2, a simulation operation unit 3A, and switching units 4a, 4b, 4f.
And The turbine control calculation unit 2 outputs a main steam stop valve bypass valve drive signal d1 obtained by performing a control calculation by inputting a turbine plant state signal relating to various turbines 21. The simulation operation unit 3A includes a main steam stop valve bypass valve opening degree simulation operation unit 3a and a turbine speed simulation operation unit 3b. The main steam stop valve bypass valve opening degree simulation operation section 3a outputs a signal that simulates the main steam stop valve bypass valve opening degree. The turbine rotation speed simulation calculation unit 3b outputs a signal that simulates the turbine rotation speed.

The switching section 4a receives the main steam stop valve bypass valve opening input signal a1 and outputs it to the turbine control arithmetic section 2 as a main steam stop valve bypass valve opening control signal c1. The main steam stop valve bypass valve opening simulation signal b1 of the stop valve bypass valve opening simulation operation section 3a is input and switched to the turbine control operation section 2 as a main steam stop valve bypass valve opening control signal c1.

The switching unit 4b receives the turbine speed input signal a
2 is output to the turbine control operation unit 2 as a turbine speed control signal c2, while the turbine speed simulation signal b2 of the turbine speed simulation operation unit 3b is input by a simulation signal to the turbine control operation unit 2. It is switched and output as the rotation speed control signal c2.

The switching unit 4f serving as a signal output blocking unit, during the simulation based on the simulation signal, outputs the main steam stop valve bypass valve driving signal d of the turbine control calculation unit 2.
1 is prevented from being output to the outside.

According to the first embodiment, the simulation operation unit 3A
A main steam stop valve bypass valve opening degree simulation signal b1 and a turbine speed simulation signal b2 are created by the main steam stop valve bypass valve opening degree simulation operation section 3a and the turbine speed simulation operation section 3b, and a simulation signal is input. Then, the switching section 4a switches from the main steam stop valve bypass valve opening input signal a1 to the main steam stop valve bypass valve opening simulation signal b1 while the switching section 4b switches the turbine speed input signal a2 to the turbine rotation speed simulation signal b2. Is performed.

Then, the main steam stop valve bypass valve opening control signal c1 from the switching unit 4a and the turbine speed control signal c2 from the switching unit 4b are input to the turbine control arithmetic unit 2, and the turbine control arithmetic unit 2 The calculated result is output as the main steam stop valve bypass valve drive signal d1. If the main steam stop valve bypass valve drive signal d1 is output to the outside during the simulation, there is a possibility that the external connection destination may be affected. The separation is performed at 4f.

FIG. 2 is a configuration diagram of an automatic turbine control device according to a second embodiment of the present invention.

In FIG. 2, the same reference numerals as those in FIG. 9 showing the prior art denote the same or corresponding parts, and the second embodiment shown in FIG. A simulation unit 3B having a valve bypass valve opening degree simulation unit 3a, a turbine speed simulation unit 3b, and a generator output simulation unit 3c; a switching unit 4a, a switching unit 4b, a switching unit 4c, and a switching unit 4f; Is provided in the turbine automatic control device 1A so that a simulation of the main steam stop valve bypass valve opening, the turbine speed, and the generator output signal can be executed.

The automatic turbine control unit 1B comprises a turbine control operation unit 2, a simulation operation unit 3B, and switching units 4a, 4b, 4
c, 4f. The turbine control operation unit 2 receives and inputs a turbine plant state signal relating to the various turbines 21 to perform a control operation to perform a main steam stop valve bypass valve drive signal d.
1 is output. The simulation unit 3B includes a main steam stop valve bypass valve opening degree simulation unit 3a, a turbine speed simulation unit 3b, and a generator output simulation unit 3c. The main steam stop valve bypass valve opening degree simulation operation section 3a outputs a signal that simulates the main steam stop valve bypass valve opening degree.
The turbine rotation speed simulation calculation unit 3b outputs a signal that simulates the turbine rotation speed. The generator output simulation unit 3c
A signal that simulates a generator output signal is output.

The switching section 4a receives the main steam stop valve bypass valve opening input signal a1 and outputs it to the turbine control arithmetic section 2 as the main steam stop valve bypass valve opening control signal c1, while the main steam stop valve is controlled by the simulation signal. The main steam stop valve bypass valve opening simulation signal b1 of the stop valve bypass valve opening simulation operation section 3a is input and switched to the turbine control operation section 2 as a main steam stop valve bypass valve opening control signal c1.

The switching unit 4b receives the turbine speed input signal a
2 is output to the turbine control operation unit 2 as a turbine speed control signal c2, while the turbine speed simulation signal b2 of the turbine speed simulation operation unit 3b is input by a simulation signal to the turbine control operation unit 2. It is switched and output as the rotation speed control signal c2. The switching unit 4c receives the generator output input signal a3 and outputs it as a generator output control signal c3 to the turbine control operation unit 2, and receives the generator output simulation signal b3 based on a simulation signal to generate a generator output control signal. The output is switched as c3.

The switching unit 4f as a signal output blocking unit blocks the output of the main steam stop valve bypass valve drive signal d1 of the turbine control calculation unit 2 to the outside according to the simulation signal.

With this configuration, the main steam stop valve bypass valve opening simulation signal b1 and the turbine output speed simulation calculation unit 3c, the generator output simulation simulation unit 3c, and the main steam stop valve bypass valve opening simulation signal A rotation speed simulation signal b2 and a generator output simulation signal b3 are created.

Main steam stop valve bypass valve opening input signal a1
And the main steam stop valve bypass valve opening simulation signal b1 are input to the switching unit 4a, and the main steam stop valve bypass valve opening simulation signal b1 is output as the main steam stop valve bypass valve opening control signal c1 by the simulation signal. You. Further, a turbine speed input signal a2 and a turbine speed simulation signal b2
Are input to the switching unit 4b, and the simulation signal outputs the turbine speed simulation signal b2 as the turbine speed control signal c2. Further, the generator output input signal a3 and the generator output simulation signal b3 are input to the switching unit 4c, and the generator output simulation signal b3 is output as a generator output control signal c3 by a simulation signal.

The turbine control calculation unit 2 outputs the calculated result as a main steam stop valve bypass valve drive signal d1. If the main steam stop valve bypass valve drive signal d1 is output to the outside, it may affect an external connection destination during the simulation. Therefore, the switching unit 4f as a signal output blocking unit is not output during the simulation. The separation is performed at.

FIG. 3 is a block diagram of an automatic turbine control device according to a third embodiment of the present invention.

In FIG. 3, the same reference numerals as those in FIG. 9 showing the prior art indicate the same or corresponding parts, and the third embodiment shown in FIG. Simulation unit 3C having a degree simulation operation unit 3d and a generator output simulation operation unit 3c, a switching unit 4c, and a switching unit 4g are provided in the turbine automatic control device 1C to enable simulation of a generator output signal. It has a feature in the point described above.

The automatic turbine control unit 1C includes a turbine control operation unit 2, a simulation operation unit 3C, and switching units 4c and 4g. The turbine control calculation unit 2 includes various turbines 21
And outputs controllable valve drive signal d4 by controlling and calculating the turbine plant state signal. The simulation operation unit 3C includes a generator output simulation operation unit 3c and a control valve opening degree simulation operation unit 3d. Generator output simulation unit 3
c outputs a signal simulating the generator output signal. The opening / closing valve opening degree simulation section 3d outputs a signal simulating the opening / closing valve opening signal.

The switching unit 4c receives the generator output input signal a3 and outputs it as a generator output control signal c3 to the turbine control operation unit 2, while simulating the generator output of the generator output simulation unit 3c by a simulation signal. The signal b3 is input and the generator output control signal c is sent to the turbine control operation unit 2.
The output is switched as 3.

The switching unit 4g performs the simulation
The output of the control valve drive signal d4 of the turbine control calculation unit 2 to the outside is prevented.

With the above configuration, the opening / closing valve opening degree simulation unit 3d
And the generator output simulation circuit 3c controls the opening and closing valve opening degree simulation signal b.
4 and a generator output simulation signal b3 are created. The switching unit 4 switches the generator output input signal a3 and the generator output simulation signal b3.
c, and a generator output simulation signal b3 is output to the turbine control operation unit 2 as a generator output control signal c3 by a simulation signal. The result calculated by the turbine control calculation unit 2 is output as the control valve drive signal d4. If the control valve drive signal d4 is output to the outside during the simulation, it may affect the external connection destination. Therefore, during the simulation, disconnection is performed by the switching unit 4g as a signal output blocking unit so as not to output to the outside. Will be

FIG. 4 is a configuration diagram of an automatic turbine control device according to a fourth embodiment of the present invention.

In FIG. 4, the same reference numerals as those in FIG. 9 showing the prior art indicate the same or corresponding parts, and the fourth embodiment shown in FIG. Degree simulation unit 3d and opening / closing valve opening degree instruction simulation unit 3e
The simulation operation unit 3D, the switching unit 4d, the switching unit 4e, and the switching unit 4f having the following are provided in the automatic turbine control device 1D so that the simulation based on the adjustable valve opening signal and the adjustable valve opening command signal can be executed. It has a feature in that

The automatic turbine control device 1D comprises a turbine control operation unit 2, a simulation operation unit 3D, and switching units 4d, 4e, 4f.
And The turbine control operation unit 2 receives a turbine plant state signal relating to various turbines 21 and performs control operation to output a main steam stop valve bypass valve drive signal d1. The simulation operation unit 3D includes an adjustment valve opening degree simulation operation unit 3d and an adjustment valve opening degree instruction simulation operation unit 3e. The opening / closing valve opening degree simulation operation section 3d outputs a signal simulating the opening / closing valve opening signal. The opening / closing valve opening command simulation operation section 3e outputs a signal simulating the opening / closing valve opening command signal.

At the time of simulation, the switching unit 4f
The output of the main steam stop valve bypass valve drive signal d1 of the turbine control calculation unit 2 to the outside is prevented.

With this configuration, the simulated operation unit 3d and the simulated operation unit 3e for the opening / closing valve command generate the simulated signal b4 for the opening / closing valve operation and the simulated signal b5 for the opening / closing valve operation.
The opening / closing valve opening input signal a4 and the opening / closing valve opening simulation signal b4 are input to the switching section 4d, and the opening / closing valve opening simulation signal b4 is output to the turbine control calculation section 2 as the opening / closing valve opening control signal c4 by the simulation signal. Is done. In addition, the control valve opening command signal a5 and the control valve simulation command signal b5 are input to the switching unit 4e, and are simulated by the simulation signal.
The control valve simulation command signal b5 is output to the turbine control operation unit 2 as a control valve control command signal c5. Then, the result calculated by the turbine control calculation unit 2 is output as the control valve drive signal d4. In this case, if the control valve drive signal d4 is output during the simulation, it may affect the external connection destination. Therefore, the switching unit 4f serving as a signal output blocking unit disconnects the external output during the simulation so that the output is not performed during the simulation. Is performed.

FIG. 5 is a configuration diagram of an automatic turbine control device according to a fifth embodiment of the present invention.

In FIG. 5, the same reference numerals as those in FIG. 9 showing the prior art indicate the same or corresponding parts, and the fifth embodiment shown in FIG. 5 differs from the simulation apparatus 3 in FIG. A simulation operation unit having a valve bypass valve opening simulation operation unit 3a, a turbine speed simulation operation unit 3b, a generator output simulation operation unit 3c, a controllable valve opening simulation operation unit 3d, and a controllable valve opening command simulation operation unit 3e. 3E, a switching unit 4a, a switching unit 4b, a switching unit 4c, a switching unit 4d, a switching unit 4e, a switching unit 4f, and a switching unit 4g are provided in the turbine automatic control device 1E, and various simulations according to purposes can be executed. It has a feature in that it is performed.

The automatic turbine control device 1E includes a turbine control operation unit 2, a simulation operation unit 3E, and switching units 4a to 4g. The turbine control calculation unit 2 includes various turbines 21
The main steam stop valve bypass valve drive signal d1 or the control valve drive signal d4 is output by inputting a turbine plant state signal relating to the control operation and calculating. Simulation unit 3E
Are a main steam stop valve bypass valve opening degree simulation section 3a, a turbine speed simulation section 3b, and a generator output simulation section 3c.
And a regulating valve opening degree simulation calculation section 3d and a regulating valve opening degree command simulation calculation section 3e.

The main steam stop valve bypass valve opening degree simulation calculation section 3
a outputs a signal simulating the opening degree of the main steam stop valve bypass valve. The turbine rotation speed simulation calculation unit 3b outputs a signal that simulates the turbine rotation speed. The generator output simulation section 3c outputs a signal simulating the generator output signal. The opening / closing valve opening degree simulation section 3d outputs a signal simulating the opening / closing valve opening signal. The opening / closing valve opening command simulation operation section 3e outputs a signal simulating the opening / closing valve opening command signal.

The switching unit 4a receives the main steam stop valve bypass valve opening input signal a1 and outputs it to the turbine control arithmetic unit 2 as the main steam stop valve bypass valve opening control signal c1. The main steam stop valve bypass valve opening simulation signal b1 of the steam stop valve bypass valve opening simulation operation section 3a is input and switched to the turbine control operation section 2 as a main steam stop valve bypass valve opening control signal c1.

The switching unit 4b receives the turbine speed input signal a
2 and outputs it to the turbine control operation unit 2 as a turbine speed control signal c2, and inputs the turbine speed simulation signal b2 of the turbine speed simulation operation unit 3b based on the simulation signal 2 to the turbine control operation unit 2. The output is switched and output as the turbine speed control signal c2.

The switching unit 4c receives the generator output input signal a3 and outputs it as a generator output control signal c3 to the turbine control calculation unit 2, while the simulation signal 3 outputs the generator output of the generator output simulation calculation unit 3c. Simulated signal b3
And outputs it to the turbine control operation unit 2 as a generator output control signal c3.

The switching unit 4d receives the control valve opening input signal a4 and outputs the control signal as a control valve control signal c4 to the turbine control calculation unit 2, while the simulation signal 4 controls the control valve simulation unit 3d. Control valve opening degree simulation signal b4
Is output as the control valve control signal c4.

The switching section 4e receives the control valve opening degree command input signal a
5 is output to the turbine control calculation unit 2 as a controllable valve opening command control signal c5. On the other hand, the control signal c5 of the controllable valve opening simulation control unit 3d is switched and output according to the simulation signal 5. .

The switching unit 4f prevents the turbine control computing unit 2 from outputting the main steam stop valve bypass valve drive signal d1 to the outside by the simulation signal 1.

The switching section 4g prevents the turbine control operation section 2 from outputting the control valve drive signal d4 to the outside by the simulation signal 4.

The switching unit 3f provided in the simulation unit 3E receives the main steam stop valve bypass valve opening control signal c1 and receives the turbine speed simulation unit 3b and the generator output simulation unit 3.
c, while the simulation signal 1 inputs the main steam stop valve bypass valve opening simulation signal b1 to input a turbine rotation speed simulation operation unit 3b and a generator output simulation operation unit 3b.
The output is switched to output to c. Switching unit 3g
Receives the control valve opening degree control signal c4 and outputs it to the generator output simulation section 3c, while the simulation signal 4 inputs the control valve opening degree simulation signal b4 and outputs it to the generator output simulation section 3c. Output.

In this configuration, for example, when the input of the main steam stop valve bypass valve opening input signal a1 is normal and the main steam stop valve bypass valve drive signal d1 is used, the main steam stop valve bypass valve 2
5 is operable and other inputs are in an abnormal state.

In this case, the simulation signal 1 is set to “0”. As a result, the switching section 4a outputs the main steam stop valve bypass valve opening input signal a1 as the main steam stop valve bypass valve opening control signal c1 and outputs it to the turbine control arithmetic section 2. As a result, the main steam stop valve bypass valve driving signal d1 obtained by the turbine control operation unit 2 is output via the switching unit 4f, and the main steam stop valve bypass valve 25 is driven.

Further, the main steam stop valve bypass valve opening control signal c1 is input to the turbine speed simulation unit 3b and the generator output simulation unit 3c via the switching unit 3f. Thereby, the turbine speed simulation signal b2 and the generator output simulation signal b3 can be created based on the main steam stop valve bypass valve opening control signal c1, and the combination test with the main steam stop valve can be performed.

That is, when the input of the main steam stop valve bypass valve opening input signal a1 is normal and the other turbine speed input signal a2 is abnormal, the main steam stop valve bypass valve opening input signal a1 is used as it is. Simulation signal 2
Is set to ON “1”, the turbine control calculation unit 2 can be simulated by the turbine speed simulation signal b2 instead of the turbine speed input signal a2. When the input of the main steam stop valve bypass valve opening input signal a1 is normal and the other generator output input signal a3 is abnormal, the simulation 3 uses the main steam stop valve bypass valve opening input signal a1 as it is. Is set to ON “1”, the turbine control operation unit 2 can be simulated by the generator output simulation signal b3 instead of the generator output input signal a3.

For example, when the input of the control valve opening input signal a4 is normal and the other generator output input signal a3 is abnormal, the simulation 4 is set to OFF "0". As a result, the control valve opening input signal a4 changes the control valve drive signal d.
4, the control valve opening control signal c4 is input to the turbine control calculation unit 2 and the control valve opening control signal c4 is input from the switching unit 3g to the generator output simulation calculation unit 3c. When the simulation signal 3 is turned ON "1", the generator output simulation signal b3 is input from the generator output simulation processor 3c to the turbine control calculator 2 as the generator output control signal c3 via the switching unit 4c. The simulation of the turbine control calculation unit 2 can be performed.

As described above, when the main steam stop valve bypass valve opening input signal a1 or the control valve opening input signal a4 is normal and other input signals are abnormal, other simulation signals are turned on and off to turn on other simulation signals. The soundness of the turbine control calculation unit 2 can be confirmed using the simulation signal instead of the abnormal signal.

Further, for example, when the simulation signal 1 and the simulation signal 2 are turned ON, the same turbine start control simulation as that of the first embodiment shown in FIG. 1 can be executed. Further, for example, when the simulation signal 1, the simulation signal 2, and the simulation signal 3 are turned on, the simulation of the generator output control by the main steam stop valve opening control similar to the second embodiment shown in FIG. 2 is executed. it can.

If the simulation signal 3 and the simulation 4 are turned on, for example, the third signal shown in FIG.
The same simulation as that of the generator output control by the opening / closing valve opening control similar to the embodiment can be performed. Further, for example, if the simulation signal 4 and the simulation signal 5 are turned ON, the same simulation as the power generation output control by the control of the valve in the first embodiment shown in FIG. 4 can be performed.

FIG. 6 is a configuration diagram of an automatic turbine control device according to a sixth embodiment of the present invention.

FIG. 6 shows a first embodiment of the present invention.
6 denote the same or corresponding parts. In the sixth embodiment shown in FIG. 6, a simulation signal output unit 6 is added to the first embodiment shown in FIG. The feature is that the simulation can be executed only when the simulation is performed.

The simulation signal output unit 6 calculates the logical product of the simulation signal and the turbine trip signal a6, and outputs a simulation signal when it is "1".

With the above configuration, the turbine trip signal a6
When the output of the AND operation of the simulation signal and the simulation signal is “1”, the switching section 4a outputs the main steam stop valve bypass valve opening simulation signal b1 to the main steam stop valve bypass valve opening control signal c1.
Is output to the turbine control calculation unit 2 and the turbine speed simulation signal b2 is output as the turbine speed control signal c2.
Is output to the turbine control calculation unit 2.

FIG. 7 is a block diagram of an automatic turbine control device according to a seventh embodiment of the present invention.

In FIG. 7, the same reference numerals as those in the first embodiment shown in FIG. 1 denote the same or corresponding parts. In the seventh embodiment in FIG. 7, a display 10 is added to the first embodiment. However, the present embodiment is characterized in that the current state, whether an actual input signal or a simulation signal is input to the turbine control operation unit 2, can be transmitted to a tester.

According to this configuration, the tester can use the display 10
Since the display indicates whether control is being performed or simulation is being performed, the test operation can be performed efficiently.

FIG. 8 is a configuration diagram of an automatic turbine control device according to an eighth embodiment of the present invention.

In FIG. 8, the same reference numerals as those in the first embodiment shown in FIG. 1 denote the same or corresponding parts. In the eighth embodiment, a CRT 11 is added to the first embodiment.
The RT, the simulation operation unit 3A, and the turbine control operation unit 2 are connected to each other, and the operation contents of the simulation operation unit 3G and the operation contents of the turbine control operation unit 2 are displayed on the CRT 11, thereby facilitating debugging during a simulation test. Things.

As described above, according to the embodiment of the present invention,
Conventionally, when performing a simulation test, a simulation operation device was required separately from the automatic turbine control device.Therefore, transportation of the simulation operation device and removal of hard wiring connected to the control device, such as connection with the simulation operation device, etc. Human work had to be performed.

According to the present invention, the debugging operation of the turbine control operation unit can be easily performed, the reliability at the time of the factory and on-site tests can be ensured, and the simulation time can be greatly reduced. Also, the simulation test by the user can be easily performed.
A stable periodic inspection by the user can be realized.

When the automatic turbine control device is of a digital type, the simulation operation unit is built in the device, so that it is not necessary to secure a special space externally. Only an economical turbine automatic control device with a simulation function can be provided.

[0086]

As described above, according to the first aspect of the present invention, a turbine control operation unit for performing a turbine start control operation and a generator output control operation using a main steam stop valve bypass valve or a steam control valve is simulated. A simulation operation unit for generating a simulation signal for the turbine automatic control device is provided in the turbine automatic control device, so that the turbine plant state signal and the simulation signal can be switched as appropriate. You no longer need to work. Therefore, the efficiency and reliability of the simulation can be greatly improved.

According to the second aspect of the present invention, there is provided a simulation operation section for generating a simulation signal for simulating a turbine control operation section for performing a generator output control operation by a main steam stop valve bypass valve or a steam control valve. Since it is provided in the automatic turbine control unit and can appropriately switch between the turbine plant state signal and the simulation signal, it is not necessary to install a separate simulation device when necessary as in the past, and to improve the efficiency of simulation. The reliability can be greatly improved.

According to the third aspect of the present invention, a simulation operation section for generating a simulation signal for simulating a turbine control operation section for performing a turbine startup control operation is provided in the automatic turbine control device, and a turbine plant state signal is provided. And the simulation signal can be appropriately switched, so that it is not necessary to separately install a simulation operation device when necessary as in the related art, and the efficiency and reliability of the simulation can be greatly improved.

According to the fourth aspect of the present invention, it is possible to simulate only a part of the turbine control operation unit or a combination of the parts according to the purpose of the simulation, so that a more accurate and reliable simulation can be executed.

Further, according to the fifth aspect of the present invention, the simulation can be performed only when the turbine trip signal is input, so that a safe operation can be ensured and the plant is prevented from being adversely affected. .

According to the sixth aspect of the present invention, whether or not a simulation is being performed is displayed, so that the test operation can be efficiently performed in a short period of time. Further, since the control operation contents or the simulation operation contents are displayed, the test operation can be performed. Easy, efficient and reliable simulation. The simulation can be performed not only by the manufacturer but also by the user himself.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an automatic turbine control device according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of an automatic turbine control device according to a second embodiment of the present invention.

FIG. 3 is a configuration diagram of an automatic turbine control device according to a third embodiment of the present invention.

FIG. 4 is a configuration diagram of an automatic turbine control device according to a fourth embodiment of the present invention.

FIG. 5 is a configuration diagram of an automatic turbine control device according to a fifth embodiment of the present invention.

FIG. 6 is a configuration diagram of an automatic turbine control device according to a sixth embodiment of the present invention.

FIG. 7 is a configuration diagram of an automatic turbine control device according to a seventh embodiment of the present invention.

FIG. 8 is a configuration diagram of an automatic turbine control device according to an eighth embodiment of the present invention.

FIG. 9 is a configuration diagram of a conventional automatic turbine control device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Turbine automatic control apparatus 2 Turbine control calculation part 3 Simulation calculation part 3a Main steam stop valve bypass valve opening degree simulation calculation part 3b Turbine rotation speed simulation calculation part 3c Generator output simulation calculation part 3d Adjustable valve opening degree simulation calculation part 3e Valve opening command simulation unit 4a, 4b, 4c, 4d, 4e, 4f, 4g Switching unit 5 External input / output connection unit 6 Simulation signal output unit 10 Display 11 CRT 21 Turbine 22 Generator 23 Turbine speed detector 24 Generator output detector 25 Main steam stop valve bypass valve 26 Main steam stop valve bypass valve drive unit 27 Main steam stop valve bypass valve opening detector 28 Steam control valve 29 Control valve drive device 30 Control valve opening detector 32 Control Valve opening command signal output device

Claims (6)

[Claims] 1. A turbine start control operation for controlling the opening of a main steam stop valve bypass valve based on a turbine plant state signal, and a main steam stop valve bypass valve or steam control based on a turbine plant state signal. A turbine control operation unit that performs a generator output control operation for performing opening control of the valve, a simulation operation unit that generates and outputs various turbine plant simulation signals necessary to simulate the turbine control operation unit, A turbine plant state signal is input to the turbine control operation unit to execute a control operation, and a control signal obtained is output to the turbine plant.At the time of simulation, the turbine from the simulation operation unit is used instead of the turbine plant state signal. A plant simulation signal was input to the turbine control calculation unit to execute a simulation control calculation. Turbine automatic control system, characterized in that it comprises a switching unit for switching so as to output the fictitious control signal. 2. A turbine control operation unit for performing a generator output control operation for performing an opening control of a main steam stop valve bypass valve or a steam control valve based on a turbine plant state signal, and the turbine control operation unit A simulation calculation unit that generates and outputs various turbine plant simulation signals necessary to simulate the generator output control calculation of the generator, and inputs the turbine plant state signal to the turbine control calculation unit to execute the generator output control calculation. While the obtained control signal is output to the turbine plant, at the time of simulation, a turbine plant simulation signal from the simulation operation unit is input to the turbine control operation unit instead of the turbine plant state signal to generate a generator output control simulation operation. And a switching unit that switches so as to output a simulation control signal obtained by executing Turbine automatic control system. 3. A turbine control operation section for performing a turbine start control operation for controlling an opening degree of a main steam stop valve bypass valve based on a turbine plant state signal, and simulating the turbine start control operation of the turbine control operation section. A simulation operation unit that generates and outputs various turbine plant simulation signals necessary for performing the operation, and a turbine plant control signal obtained by inputting the turbine plant state signal to the turbine control operation unit and executing the turbine start control operation. On the other hand, at the time of simulation, a simulation control signal obtained by inputting a turbine plant simulation signal from the simulation operation unit to the turbine control operation unit instead of the turbine plant state signal and executing the turbine start control simulation operation Characterized by comprising a switching unit for switching so as to output Automatic control system. 4. A main steam stop valve bypass operation is executed based on a main steam stop valve bypass valve opening input signal and a turbine speed input signal to control turbine start control for opening of the main steam stop valve bypass valve. Means for generating and outputting a valve drive signal; and a generator output control operation for controlling the opening degree of the main steam stop valve or the control valve based on the generator output input signal and the generator output command signal. Means for executing and generating and outputting a main steam stop valve bypass valve drive signal or a control valve drive signal, or for controlling the control valve opening based on a control valve opening command input signal and a control valve opening input signal. A turbine control operation unit having means for executing a generator output control operation to generate and output a control valve drive signal; and a main steam stop valve bypass valve opening simulating the main steam stop valve bypass valve opening input signal. A main steam stop valve bypass valve opening simulation unit for generating and outputting a signal, a turbine rotation speed simulation unit for generating and outputting a turbine rotation speed simulation signal for simulating the turbine rotation input signal, and the generator output input signal. A generator output simulation unit for generating and outputting a generator output simulation signal to be simulated, an adjustment valve opening simulation unit for generating and outputting an adjustment valve opening simulation signal that simulates the adjustment valve opening input signal; A simulation operation unit comprising an adjustment valve opening command simulation unit for generating and outputting an adjustment valve opening command simulation signal for simulating a valve opening instruction signal; and the main steam stop valve bypass valve opening to the turbine control calculation unit. The input signal is input to execute the control operation, and the first simulation signal is switched to input the main steam stop valve bypass valve opening simulation signal to execute the simulation control operation. 1 The switching unit and the turbine control calculation unit are configured to execute the control calculation by inputting the turbine speed input signal to the turbine control calculation unit, and to execute the simulation control calculation by inputting the turbine speed simulation signal by the second simulation signal. A second switching unit that switches the generator output input signal to the turbine control operation unit to execute a control operation, and inputs a generator output simulation signal by a third simulation signal to execute a simulation control operation. A third switching unit for switching to be executed, and the control operation being executed by inputting the control valve opening input signal to the turbine control calculation unit, and inputting the control valve simulation signal by a fourth simulation signal. A fourth switching unit that switches the simulation control calculation to be executed, and inputs the control valve opening input signal to the turbine control calculation unit. A switching unit comprising: a switching unit configured to input the control valve opening degree simulation signal based on a fifth simulation signal to switch to execute the simulation control operation; and the turbine control calculation unit. While the main steam stop valve drive signal generated and output by the above is output to the main steam stop valve bypass valve, the first simulation signal
A first signal output blocking unit for blocking output of the main steam stop valve bypass valve drive signal to the main steam stop valve bypass valve, and outputting a control valve drive signal generated and output by the turbine control arithmetic unit to the control valve; On the other hand, a signal output blocking unit comprising a second signal output blocking unit for blocking the output of the control valve drive signal to the control valve by the fourth simulation signal; and the first to fifth simulation signals. Can be individually turned on and off so that the first to fifth switching units
A turbine automatic switching means for individually switching each of the switching units according to the purpose, and means for individually operating the first signal output blocking unit and the second signal output blocking unit according to the purpose. Control device. 5. The simulation according to claim 1, wherein a simulation signal is output to the switching unit and the signal output blocking unit only when a turbine trip signal is input during the simulation. Automatic turbine control device. 6. A system according to claim 1, further comprising means for displaying a switching state of said switching section and said signal output blocking section, or means for displaying control calculation contents or simulation calculation contents by said turbine control calculation section. The automatic turbine control device according to any one of claims 1 to 4.