Abstract: Method and system for controlling the acceleration of a turbine-generator or limiting the load of the turbine-generator if a cooling regulator which regulates the cooling of the turbine-generator or auxiliary components is determined to be off-line.

Abstract: A boiler feed pump turbine system wherein the feed pump turbine speed is controlled by a signal locally generated by an operator up to a certain minimum speed and thereafter by a signal automatically commanded by a boiler feedwater control system. During operation within a certain speed range in which the signal from the boiler feedwater control system is controlling, a locally generated signal in the feedpump turbine control signal is caused to track the boiler control system signal so that in the event of failure thereof, the feed pump turbine may be controlled by the locally generated signal as opposed to reducing its speed to zero as would normally be dictated by the failed signal.

Abstract: A boiler feedpump turbine (BFPT) control system for controlling the rotating speed of a boiler feedpump turbine in a selected one of at least three control modes is disclosed. The boiler feedpump turbine is mechanically coupled to a boiler feedpump for governing the flow of feedwater pumped by the feedpump to a boiler. A boiler control turbine speed signal which represents the feedwater requirement of the boiler is provided to the BPFT control system from a conventional boiler feedwater control system. The flow of feedwater pumped by the feedpump is a function of the rotating speed of the boiler feedpump turbine which is controlled in a selected one of three modes in accordance with the adjustment of a speed set point.