Applications of model based controls on 5 coal fired units to improve thermal and emissions performance

Summary form only given. Virginia Power embarked on an ambitious programme to install Stone and Webster's model based advanced steam temperature control (ASTC) system on Unit 1. The ASTC system included the model reference feedforward steam temperature control system to address the outage issue and the Soot Blow Advisor system to address the NO/sub x/ emission performance issue. This paper describes these model based systems and their performance on the five coal fired power plants.