Ovation® Migration Saved Xcel Energy’s Pawnee Plant $2.4 Million and Reduced Startup by 4 Days

Published By Emerson Process Management

• Published February 2006
• 2 Page(s)

Xcel Energy’s Pawnee Station began commercial operation in December 1981 using a combination of Westinghouse 7300 combustion controls, a Control Data Corporation data acquisition system, a Westinghouse boiler interlock and interposing relay system, and a Forney burner management system. During the period of 1991 through 1994, Xcel replaced these controls, including much of the balance of plant, with an Emerson WDPF system. Changes to environmental regulations and plant operating conditions required yet another upgrade to further improve plant performance.