Boiler Three Element Controller Drum Level Control Archives Sinfo

Three element drum control allows the level pid loop to have a linear op and to anticipate & minimize upsets from changing steam demand The addition of these three elements, (1) drum level, (2) steam flow and (3) feedwater flow, enables the controller to predict the amount of water added to the.

Proper mechanical installation and density compensation are. At low load, the steam and/or bfw flow. Feedforward compensation prevents level oscillations.