During the operation of a trough solar power station

the stability of the outlet temperature of the thermal conductor is an important control objective for the safe and reliable operation of the power station. Due to the structural characteristics of the collector tube

the outlet temperature characteristics of the trough collector have large inertia and large delay

so the outlet temperature control problem is complicated. In order to solve this problem effectively

a dynamic mathematical model of MW trough solar power collector circuit is constructed in this paper

and a temperature control system is constructed at the collector outlet. A step prediction controller for the outlet temperature of trough solar power collector circuit is proposed. Simulation experiments were carried out based on MATLAB/Simulink platform. The simulation results show that

for the groove heat collecting loop

under the disturbance of irradiation

heat conduction oil inlet temperature and ambient temperature

the stepped predictive control system has shorter adjustment time

smaller overshoot

better robustness

and significantly improved control effect compared with the traditional PID control system. The proposed predictive controller can well cope with the situation of heat conduction oil overtemperature and heat conduction oil flow fluctuation at the outlet of heat collecting field

which is conducive to the safe and stable operation of the trough heat collecting field.