Loading patent…
AssigneeGeneral Electric Company
InventorsDouglas G. Carroll, Eugene C. Eckert, Lamont H. Youngborg, Nabil A. Tamer
Estimating the term…
A method of controlling the system pressure in a power generating system, having a turbine-generator and a BWR, that modulates the core thermal power of the reactor while maintaining the main turbine control valves in a constant steady position is described. The core thermal power may be adjusted by adjusting the control rod density within the reactor core or by adjusting the flow rate through the reactor which may be accomplished by modulating the speed of variable frequency recirculation pumps or by modulating recirculation flow control valves. The method includes transferring the power generation system from normal turbine control valve modulation pressure control to core thermal power modulation pressure control. Additionally the method includes modifying the bypass valve closure bias and the power control bias to accommodate the variances from core power modulation pressure control over normal pressure control. If pressure transients are outside of predetermined safety ranges, the method provides for transferring system pressure control back to the standard turbine control valve modulation pressure control.
A method of controlling the system pressure in a power generating system comprised of a turbine-generator and a boiling water reactor, the boiling water reactor including a pressure vessel containing a nuclear fuel core, control rods, and a recirculation flow control system, the power generating system configured so that a core thermal power converts water into steam for driving the turbine-generator to produce electric power, and steam is converted back to water and returned to the boiling water in a closed loop, the turbine-generator includes main turbine control valves to control steam input into the turbine generator, the system pressure being controlled in a turbine control valve modulation pressure control mode, said method comprising the steps of:
A method of controlling the system pressure in a power generating system comprised of a turbine-generator and a boiling water reactor, the boiling water reactor including a pressure vessel containing a nuclear fuel core, control rods, and a recirculation flow control system, the power generating system configured so that core thermal power converts water into steam for driving the turbine-generator to produce electric power, and steam is converted back to water and returned to the boiling water reactor in a closed loop, the turbine-generator includes main turbine control valves to control steam input into the turbine-generator, the system pressure being controlled in a turbine control valve modulation pressure control mode, said method comprising the steps of:
Dependencies are inferred from the claim text.