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RESEARCH PAPERS

CTCC Cogeneration Systems and Steam Supply Availability: An Investigation of Dynamic Availability

[+] Author and Article Information
J. M. Franceschi

Inst. & Control Engineering, Ebasco Services Inc.; Dept. of Applied Science, New York University, New York, NY

J. Eng. Gas Turbines Power 116(1), 20-25 (Jan 01, 1994) (6 pages) doi:10.1115/1.2906795 History: Received March 06, 1992; Online April 24, 2008

Abstract

The ability of an industrial cogeneration project to satisfy its steam supply contract was investigated using dynamic simulation. This study of unit behavior performance focused on steam capacity control during expected operational transients, from the trigger event to system recovery. Transients specified in the project steam sale contract include the conditions of unit upset and the dynamic interruption criteria. Performance is measured by the quantitative steam supply variables of pressure, flow, temperature, enthalpy (at the battery limit) and response time following the disturbance of a combustion turbine (CT) trip. A unit especially configured for steam supply uses an availability strategy for response to a CT loss, which requires back-up equipment in the boiler island to activate in time to compensate for disturbance effects without loss of steam-sale continuity as defined in the contract. Dynamic simulation was used to validate seamless transitions of plant alignments from one mode to another during the specified scenarios. A discussion of steadystate availability and facility power block structure sets the context for the investigation.

Copyright © 1994 by The American Society of Mechanical Engineers
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