Operation optimization control system and method for gas turbine power plant cold end provided with mechanical tower

The invention discloses an operation optimization control system and method for a gas turbine power plant cold end provided with a mechanical tower, and belongs to the technical field of power plant operation control. The operation optimization control system for the gas turbine power plant cold end provided with the mechanical tower comprises a monitoring workstation, a computing server, a firewall, a DCS data communication station, a PLC, a redundant network, a small meteorological station, a DCS controller, a circulating water pump and the mechanical tower, wherein the monitoring workstation is connected with the computing server, the computing server is connected with the PLC, and the computing server is used for sending control instructions to the circulating water pump and a mechanical tower fan through the PLC and the DCS controller according to meteorological data monitored by the small meteorological station in real time and power plant operation data acquired by the DCS datacommunication station to