JPH08200097A - Control device for gas turbine generator - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the reliability of gas turbine generators. In a controller for a gas turbine generator having a gas turbine engine controller 5 which receives signals from a rotation sensor and an exhaust temperature sensor and sends a control signal to a fuel control valve, signals from a frequency meter and an ammeter of the gas turbine generator Are sent to the gas turbine engine controller in response to the rotation sensor and the exhaust temperature sensor, respectively, and when at least one of the rotation sensor and the exhaust temperature sensor fails, the corresponding frequency meter and ammeter signals are used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas turbine generator control device having improved reliability.

[0002]

2. Description of the Related Art A conventional control apparatus for a gas turbine generator is shown in FIG. Rotation sensor 1 of gas turbine engine 01
And the output of the exhaust temperature sensor 2 is sent to the fuel control valve 6 via the gas turbine engine controller 5.

In the above, the gas turbine engine controller 5 receives the signals from the rotation sensor 1 and the exhaust temperature sensor 2, and sends a control signal to the fuel control valve 6 so that the frequency and output of the generator are set to predetermined values. The fuel control valve 6 opens and closes according to the input to maintain the engine speed and output at predetermined values.

[0004]

When the rotation sensor or the exhaust temperature sensor fails in the above conventional device, it is impossible to continuously operate the generator.

[0005]

The present invention employs the following means to solve the above-mentioned problems. That is, in a gas turbine generator controller having a gas turbine engine controller that receives signals from a rotation sensor and an exhaust temperature sensor and sends a control signal to a fuel control valve, the signals from the frequency meter and ammeter of the gas turbine generator are Corresponding signals from the rotation sensor and exhaust temperature sensor are sent to the gas turbine engine controller, and when at least one of the rotation sensor and exhaust temperature sensor fails, the corresponding frequency meter and ammeter signals are used. I decided to do it.

[0006]

In the above invention, the signal of the exhaust temperature sensor is proportional to the output of the gas turbine engine. The output of the ammeter (output current) from the generator is also proportional to the output of the gas turbine engine.

On the other hand, the signal from the rotation sensor is proportional to the signal from the frequency meter. Therefore, when the exhaust temperature sensor and / or the rotation sensor fails, the gas turbine engine controller can output an appropriate control signal to the fuel control valve by switching and using the signals of the ammeter and / or the frequency meter. . That is, continuous operation becomes possible, and reliability is significantly improved.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIG. Outputs of the rotation sensor 1 and the exhaust temperature sensor 2 of the gas turbine engine 01 are sent to the gas turbine engine controller 5. The outputs of the ammeter 3 and the frequency meter 4 of the generator 02 are sent to the gas turbine engine controller 5. The output of the controller 5 is sent to the fuel control valve 6.

In the above, the gas turbine controller 5 normally controls the fuel control valve 6 by receiving the outputs of the rotation sensor 1 and the exhaust temperature sensor 2.

Exhaust temperature sensor 2 and / or rotation sensor 1
When a failure occurs in the controller, the controller 5 causes the corresponding ammeter 3
By switching and / or using the signal of the frequency meter 4, the gas turbine engine controller can conventionally output the appropriate control signal to the fuel control valve.

For example, a control signal is output to the fuel control valve 6 so that the fuel flow rate increases when the rotation speed is lower than the target rotation speed, but when the rotation sensor 1 fails, a predetermined coefficient is added to the frequency. It is multiplied by and used as a rotation speed signal.

Further, for example, a control signal is output to the fuel control valve 6 so that the fuel flow rate decreases when the exhaust temperature is higher than the exhaust temperature limit, but when the exhaust temperature sensor 2 is out of order, the current limit value is set. On the other hand, if the current is large, a control signal for reducing the fuel flow rate is output.

As described above, even if the rotation sensor 1 or the exhaust temperature sensor 2 is out of order, the continuous operation becomes possible and the reliability is greatly improved.

[0014]

According to the present invention as described above,
Even if the rotation sensor or the exhaust temperature sensor fails, the generator can be continuously operated, and the reliability of the generator using the gas turbine engine is improved.

[Brief description of drawings]

FIG. 1 is a configuration block diagram of an embodiment of the present invention.

FIG. 2 is a configuration block diagram of a conventional example.

[Explanation of symbols]

 1 rotation sensor 2 exhaust temperature sensor 3 ammeter 4 frequency meter 5 gas turbine engine controller 6 fuel control valve

Claims (1)

[Claims] 1. A controller for a gas turbine generator having a gas turbine engine controller that receives signals from a rotation sensor and an exhaust temperature sensor and sends a control signal to a fuel control valve,
The signals of the frequency meter and ammeter of the gas turbine generator are sent to the gas turbine engine controller in correspondence with the signals of the rotation sensor and exhaust temperature sensor, respectively, and at least one of the rotation sensor and exhaust temperature sensor has failed. At this time, the control device for the gas turbine generator is characterized in that the signals of the corresponding frequency meter and ammeter are used.