Systems and methods for adjusting ground pressure levels to improve combined cycle power plant approach

摘要

A method for adjusting GST pressure levels of HRSG steam cycles is implemented by a pressure control computing device including a processor and a memory. The method includes receiving a plurality of measured plant operating values associated with an HRSG steam cycle, identifying multiple candidate pressure levels for use in pressurizing the HRSG steam cycle, determining a calculated steam velocity level for each of the plurality of candidate pressure levels, identifying a steam velocity limit for a steam pipe section of the HRSG steam cycle, Selecting a lowest pressure level of the plurality of candidate pressure levels, wherein the lowest pressure level is related to a particular calculated vapor velocity level that does not exceed the identified velocity limit, and pressurizing the HRSG vapor cycle with the selected lowest pressure level.