The utility model discloses a generating set AGC control system that puts into operation, including AGC put into operation switch control module and monitor terminal, AGC puts into operation switch control module and passes through repeater and monitor terminal radio communication, AGC puts into operation switch control module and includes the controller, sensor group and wireless communication module, sensor group includes the chamber negative pressure sensor, oxygen content sensor, bubble water position sensor and water supply quantity sensor, and air quantity sensor, the main steam pressuresensor, main steam temperature sensor and vibration sensor, the input termination of controller has electric wire netting instruction receiving module, assembling unit power detection module and parameter setting module, the input termination of controller has the manual module of automatic switch -over. The utility model discloses make AGC put into operation and normally work, and realize AGC module automatic switch -over, avoid each part harm such as boiler and steam turbine, alleviate staff intensity of labour, guarantee generating set's safe, stable, economical operation.