METHOD FOR GAS TURBINE OPERATION DURING UNDER-FREQUENCY OPERATION THROUGH USE OF AIR EXTRACTION

摘要

A gas turbine apparatus (5), in which the speed of rotation of a power generator (60) is synchronized with the electrical frequency of a power grid (64), includes a turbine (54), a compressor (50), a combustor (52), an air extraction passage (20), and means (80) for controlling the amount of the air extraction (20). The present invention relates to a method for controlling output power generated by the gas turbine apparatus (5) in the gas turbine apparatus (5). The method for controlling the output power includes a step of initiating the air extraction (20); and a step of controlling the amount of the air extraction (20) during an under-frequency state on the power grid (64).;COPYRIGHT KIPO 2014;[Reference numerals] (50) Compressor; (52) Combustor; (54) Turbine; (58) Steam turbine; (62,60) Power generator; (64) Power grid; (66) Air extraction energy recovery device; (68) Air separation unit; (70) Fuel; (72) Thinner control; (74) Alternative fuel; (76) Recovery device; (80) Control system; (AA) Air; (BB) Atmosphere; (CC) Exhaust gas