Gas turbine control device, gas turbine plant, gas turbine control method, and computer-readable recording medium

A control device for a gas turbine connected to a generator that can be interconnected to a power system, the gas turbine is configured so as to be capable of switching between a normal operation mode in which the gas turbine rotationally drives the generator and a reverse power operation mode in which the gas turbine is rotationally driven by the generator that receives power from the power system and operates as a motor. The control device is provided with: an index acquisition unit configured to acquire an index indicating a pressure ratio of a compressor of the gas turbine; and a signal output unit configured to output a signal for protecting the compressor when the index is less than a threshold value during operation in the reverse power operation mode of the gas turbine. 一种连结于能够与电力系统互连的发电机的燃气涡轮的控制装置，其中，所述燃气涡轮构成为能够在所述燃气涡轮旋转驱动所述发电机的通常运行模式与所述燃气涡轮由接受来自所述电力系统的电力而作为马达进行动作的所述发电机旋转驱动的反向电力运行模式之间切换运行模式，所述控制装置具备：指标获取部，构成为获取表示所述燃气涡轮的压缩机的压力比的指标；及信号输出部，构成为在所述燃气涡轮的所述反向电力运行模式下的运行中，当所述指标小于阈值时，输出用于保护所述压缩机的信号。