INSTALLATION DESCRIPTION BRIEF

INDUSTRY: IPP (Independent Power Producer)

APPLICATION: 150 MW Simple Cycle Cogeneration Plant

COMMERCIAL OPERATION:  January 2000

SKYGEN ENERGY

ANDROSCOGGIN ENERGY CENTER

Jay, Maine, USA

EPC CONTRACTOR:  BLACK & VEATCH CONSTRUCTION INC.

DESCRIPTION:

150 MW Natural Gas/Oil Fired, Simple Cycle Cogeneration Plant consisting of three gas turbine generators exhausting into three, three pressure Heat Recovery Steam Generators (HRSG’S). 

The HRSG’S are connected to common steam headers which supply steam to the adjacent

International Paper Company mill.

Plant consists of the following systems that are controlled via the Distributed Control System.

• (3) Gas Turbine/Generators (Westinghouse 251B12A0) – Limited Control
• (3) Heat Recovery Steam Generators (Nooter Eriksen)
• (3) Duct Burners (Coen)
• Emissions control via SCR/Ammonia injection (Mitsubishi)
• Export Steam Systems, (HP @ 900 PSIG, IP @ 350 PSIG, and LP @ 60 PSIG)
• Electrical power export
• All Balance of Plant Systems – Condensate, Feedwater, MU Water, Mechanical Auxiliaries, etc.

CONTROL EQUIPMENT:

Moore Process Automation Solutions APACS/QUADLOG DCS with the following components:

• Fiber Optic Data Highway
• (2) Dual Screen Operator Stations
• Engineering Workstation
• Historian Server
• Remote Operator Station at IP Mill
• Redundant I/O Servers
• (7) Redundant Advanced Controller Module Pairs
• (4) Remote I/O cabinets
• 1862 Total I/O Supplied:  272 AI  128 AO  712 DI  480 DO  160 TC  16 RTD  94 SOE

SPECIAL FEATURES:

• Integral Burner Management System and Sequence-of-Events Recording.
• Turbine Datalinks are implemented using X-Windows Technology
• GPS Time Synchronization
• Intranet “firewall” PC for live plant data
• Limited data exchange with the International Paper Mill