Systems And Methods To Extend Gas Turbine Hot Gas Path Parts With Supercharged Air Flow Bypass

A method for extending hot gas path parts life in a turbine system comprising:

• determining a desired load;
• determining a desired maintenance factor;
• determining an amount of supercharging required to achieve the desired maintenance factor for the desired load;
• determining a first mass flow quantity of air to be provided to a compressor to achieve the amount of supercharging;
• determining a second mass flow quantity of air to be provided to a heat recovery steam generator;
• providing an air flow;
• conveying the first mass flow quantity of air into the compressor;
• and
• conveying the second mass flow quantity of air to the heat recovery steam generator.

A method for ramping up a combined cycle system having a gas turbine and a heat recovery steam generator, comprising:

• determining a desired load;
• determining a present load;
• determining whether the desired load is greater than the present load;
• determining an incremental load increase;
• determining a desired firing temperature for the present load plus the incremental load increase;
• calculating a first supercharged mass flow to the gas turbine to achieve the desired firing temperature for the present load plus the incremental load increase;
• increasing the present load to the present load plus the incremental load increase;
• and
• providing the first supercharged mass flow to the gas turbine.