Methods and systems for output variance and facilitation of maintenance of multiple gas turbine plants

A power generation plant comprising:

• a first gas turbine engine configured to operate using at least one of a primary fuel and a secondary fuel, said first gas turbine engine is selectively operable between a first operational position and a second operational position, wherein said first gas turbine engine operates using only secondary fuel in the first operational position and operates using only primary fuel in the second operational position;
• at least one second gas turbine engine configured to operate using at least one of a primary fuel and a secondary fuel;
• and
• a common fuel source coupled to said first and second gas turbine engines, said common fuel source is configured to supply at least one of said first and second gas turbine engines with primary fuel at a controlled flow rate, said second gas turbine engine is configured to absorb a portion of the primary fuel from said first gas turbine engine by reducing the flow rate of primary fuel into said second gas turbine engine prior to operating said first gas turbine engine in the first operational position without flaring the primary fuel.

A fuel control system, said fuel control system controls a flow of fluid to a first gas turbine engine that operates using at least one of primary fuel and secondary fuel, and controls a flow of fuel to at least one second gas turbine engine to ensure the second gas turbine engine operates using at least one of a primary fuel and a secondary fuel, said fuel control system is configured to:

• supply at least one of the first and second gas turbine engines with primary fuel from a common fuel source at a controlled flow rate, wherein the common fuel source is coupled to the first and second gas turbine engines;
• selectively position the first gas turbine engine between a first operational position and a second operational position, wherein the first gas turbine engine operates using secondary fuel in the first operational position and operates using primary fuel in the second operational position;
• and
• supply the second gas turbine engine with primary fuel from the common fuel source at a reduced flow rate prior to selectively positioning the first gas turbine engine in the first operational position, to enable the second gas turbine engine to absorb primary fuel from the first gas turbine engine without flaring the primary fuel.