Re: Tuning of DMC LPCOST factors

Posted by Sean Goodhart on November 14, 19101 at 18:40:20:

In Reply to: Re: Tuning of DMC LPCOST factors posted by Dan O'Connor on November 09, 19101 at 18:13:50:

All too often the reason why MV (LP/QP) costs are not taken directly from "a more accurate source" is because this can lead to steady-state target solutions flipping. Operators usually demand consistency; changing targets may not be acceptable. I have successfully used planning model costs in a few controllers, with MV costs calculated in real time to ensure controllers optimize against electrical power costs, but real care is necessary to ensure gain consistency (as Dan pointed out).

Follow Ups:

• Re: Tuning of DMC LPCOST factors Keith Landells 06:45:46 1/11/102 (0)

Post a Followup

Name    : 
E-Mail  : 
Subject : 

Comments:
: All too often the reason why MV (LP/QP) costs are not taken directly from "a more accurate source" is because this can lead to steady-state target solutions flipping.  Operators usually demand consistency; changing targets may not be acceptable.  I have successfully used planning model costs in a few controllers, with MV costs calculated in real time to ensure controllers optimize against electrical power costs, but real care is necessary to ensure gain consistency (as Dan pointed out).


Optional Link URL:  
Link Title:         
Optional Image URL: