Research on Dynamic Parameter Model of Electrical Performance of Reactor Control Rod Drive System

Due to the lack of accurate parameter model of electrical performance in the dynamic change process of the reaction system, the control effect of the existing control rod drive system in nuclear power plant is not good under different environmental conditions. In this paper, the static electromagnetic simulation model of the system is established, and the electrical performance parameters (resistance, inductance) and electromagnetic force discrete data of the system under all conditions are obtained by state classification. Based on the data, the dynamic parameter model and algorithm of current, electromagnetic force, armature displacement and acceleration in the dynamic process of the control rod drive system are established. The algorithm is finally verified by the combination of electromagnetic model, circuit model and numerical simulation, and it can simulate the running state of the actual system and has the ability to predict the electrical performance parameters of the system at the next moment only by relying on control instructions and current. The dynamic parameter model constructed in this paper can lay a foundation for the formulation of efficient intelligent control strategy.