Optimization Design for Reactor Control System of the First Overseas HPR1000 Reactor

Reactor control system is an important instrument and control system and plays a significant role in the normal operation of the nuclear power plant (NPP). In order to guarantee the good control performance of the control system during the normal operation of NPP and to decrease the on-site commissioning time, it is necessary to optimize the control parameters through simulation study on the control system in the design phase. This paper analyzes the reactor control system functions of the first overseas third-generation HPR1000 reactor, and describes the controlled variables of each control system. On this basis, the optimization of control system parameters is described. Using the NPP digital simulation tool, the sensitivity analysis of the control system parameters is carried out through system modeling and simulation, and the optimal control system parameters are obtained according to the static and dynamic response characteristics of the system under different parameter values, and such parameters meet the design requirements through performance verification. The obtained reactor control system parameters have been used in the design of the reactor control system of first overseas HPR100 reactor, and used to guide the on-site commissioning and operation of NPP.