Dynamic simulation application in modern power plant control and design

This paper discusses some experience with a PC based continuous dynamic simulation model and its application in the improvement of control philosophy, integration of plant components and diagnosis of plant problems in modern fossil fired power plants. The objectives of dynamic simulation studies include new control philosophies evaluation, operational performance and analysis, field problem solving, operational procedure development and design confirmation. Some examples are included in the paper as follows: (a) improved pulverizer dynamic response; (b) improved steam temperature control; (c) improved drum level control; (d) reheater and HP bypass attemperation system; and (e) sizing of “sweetwater condenser” for steam temperature spray attemperation