OPTIMIZATION OF TURBINE GOVERNOR PERFORMANCE FOR IMPROVED PLANT OPERATION, 2018 PEERS

Cogeneration processes will increase the profitability and operational flexibility of a plant. Indeed, with the capability to generate power, a plant can offset its electrical cost, sell back its power to the grid, or even separate itself from the grid into an island-mode configuration. Despite these many benefits, plants operating turbines too often experience stability issues due to poor turbine governor performance. To avoid potential profit losses, regular dynamic turbine governor testing is required. These performance tests will confirm that the turbine map is properly configured in the governor system, that the turbine valves have minimum hysteresis, that the extraction pressure controller are optimized, and that island/speed mode is properly tuned for large load rejection. This paper also shows examples where turbine governor testing resulted in improved steam system reliability and profitability. 

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