Patent ID: 7472542

Claim:
A gas-turbine power generating installation including a gas turbine installed in the vicinity of an overage gas field or an oil field and generating electric power with said gas turbine by using natural gas produced in the overage gas field or accompanying gas produced in the oil field, the generated electric power being supplied to a consuming site, wherein said gas turbine is a gas turbine in which air compressed by a compressor is introduced to a combustor for combustion after being mixed with fuel, a turbine is driven by generated combustion gas, and a power generator is driven by motive power obtained from a rotary shaft of said gas turbine, said gas turbine includes a boosting compressor, the natural gas or the accompanying gas is boosted in pressure by said boosting compressor and supplied as fuel to said combustor, a fuel flow adjusting valve disposed in a line extending from an outlet of said boosting compressor to said combustor in said gas turbine; a tank; a line connecting an intermediate point between the outlet of said boosting compressor and said fuel flow adjusting valve to said tank; and an on/off valve disposed in the line connected to said tank.