Decoupling Control on Electric Power and Average Refrigerant Temperature of Nuclear Power Stations Based on Optimal Hankel-norm Approximation

Based on the objective model obtained using least-square method, a complete decoupler of diagonal matrix was designed according to coupling features of the electric power and average refrigerant temperature in a nuclear power station, to which the model order was reduced on the basis of optimal Hankel-norm approximation, and the model thus obtained was subsequently verified with Matlab/Simulink. Results show that the PID control system of order-reduced diagonal matrix is faster in response with lower overshoot in power control, compared with the simple PID control system.