Taking the main steam temperature of boilers in thermal power plant subordinated to Shanghai Jinshan Petro-Chemical Company as control object

directing against properties of the main steam temperature

namely large inertia

non-linear

multi-disturbance

and large time delay etc.

on the basis of analysing the causes resulted in non-effective control of the traditional PID control

a state-predictable control algorithm based on the average deviation control(ADC) of the advanced steam temperature has been put forward

and the ADC controller is being added into the traditional PID main steam temperature control system.Results of emulation show that the maximum deviation of main steam temperature in the control system boasting ADC controller has decreased 40% during occurrence of disturbance on the unit

the effectiveness of ADC control being enhanced 40% than that of traditional PID control.At the same time

under diverged condition of the traditional PID control

the ADC control algorithm can also make the system to be stabilized.