Method of operating a gas turbine which uses a compressor station for gaseous fuel

摘要

The method involves providing a compressor station (17) with a compressor (21) compressing fuel gas supplied to a combustion chamber of a gas turbine plant. Fuel gas pressures (Paftcv1-Paftcv3) are continuously measured at an outlet of control valves (CV1-CV3). A minimum fuel gas pressure required for operating a gas turbine is determined for each valve from the measured fuel gas pressure. The station is switched over to bypass operation when the fuel gas pressure reaching the inlet of the valves via a bypass system (20) is greater than or equal to the minimum fuel gas pressure.