APPLICATION: 68 MW Combined Cycle Cogeneration Plant

COMMERCIAL OPERATION: December 1990

68 MW Natural Gas/Oil Fired, Combined Cycle Cogeneration plant consisting of a single gas turbine generator exhausting into a three pressure Heat Recovery Steam Generator (HRSG) supplying steam to a single condensing steam turbine generator with uncontrolled extraction.

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

Gas Turbine Generator (GE – Frame 6) - Limited Control

Steam Turbine Generator (ABB) - Limited Control

Heat Recovery Steam Generator (Nooter/Eriksen)

Duct Burner (John Zink)

Gas Compressor System

Auxiliary Boiler with combustion control

Export Steam System @ 15 KPPH, 185 PSIG

Chiller Unit (added in 1994 by Niagara Blower)

Electrical System Monitoring with integral SOE

All Balance of Plant Systems – Condensate, Feedwater, Fuels, Mechanical Auxiliaries, etc.

Leeds+Northrup MAX 1 DCS with the following components:

(2) Operator Stations

(1) Operator Station Second Screen

(6) Auto Backup Controller File Pairs

(1) Distributed Processing Unit (DPU) for SOE

(3) Remote cabinets to handle specific areas of the plant.

1435 Total I/O Supplied: 405 AI 88 AO 120 TC 560 DI 208 DO 14 RTD 8 PI 32 SOE

GE Speedtronics Mark 4 Datalink

IBM PC Interface for Remote Monitoring, Plant Performance Calculations and Reports