Abstract
In this paper a study on an I-PD type decoupled control system applied to the configuration control of feedwater pumps of a boiling water reactor power plant is presented. The proposed control system has been designed based on partial model matching theory in a linear system with three inputs and three outputs.
This configuration control, for example from one pump operation to two pumps, needs a rapid and careful operation without causing a large change of water level of the reacter vessel, which is an important parameter in reactor core cooling, while pump flow rate should be more than minimum flow rate due to pump protection. Because of interference between the pararell running pumps, a conventional control system is not stable.
The result of computer simulation showed high performance of the proposed control system; a stable system, smaller peak value of reacter vessel water level change and shorter completion time than a conventional control.
