JIANG Ni1, MA Lixin2

 

(1.Electrical and Electronic Technology Experiment Center, University of Shanghai

 

for Science and Technology, Shanghai 200093, China; 2.Department of Electrical Engineering,

 

University of Shanghai for Science and Technology, Shanghai 200093, China)

 

 

Abstract: Aiming at the problems of nonlinearity, time varying and lagging with the main steam temperature control system of boiler,the establishment of the mathematical model for nonlinear system,the tracking control of targetpower load demand signal,elimination of interference and so on were studied, and realtime tracking control of power system response load change strategy was carried on the induction,and now on the basis of boiler turbine coordinated control which widely used in the current way. Nonlinear discrete control method was used to modeling for boiler main steam temperature,so a control method of boiler main steam temperature control system based on nonlinear discrete was put forward. The results indicate that the boiler main steam temperature control system which has used nonlinear discrete control method has significant advantages than the traditional methods in the target tracking, antidisturbance and reduction in errors caused by delay, has an important guiding significance for the control system of power generation equipment.

 

Key words: thermal power system;the main steam temperature control;nonlinear discrete controller; load tracking