원자력발전소 탈기 제어시스템 개선

In this paper, we present the results and lessons learned from the development of gas stripper control system for nuclear power plant. The level and pressure of the gas stripper tank is difficult to control smoothly because of the non-minimum phase characteristics and long delay time. The improvement of the control method from conventional PI to PI with feedforward has shown remarkable control results in case of the transfer operation.