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RESEARCH PAPERS: Articles on Power Plant Control

A Nonlinear Dynamic Model of a Once-Through Subcritical Steam Generator

[+] Author and Article Information
A. Ray

Stone & Webster Engineering Corp., Boston, Mass.

H. F. Bowman

Department of Mechanical Engineering, Northeastern University, Boston, Mass.

J. Dyn. Sys., Meas., Control 98(3), 332-339 (Sep 01, 1976) (8 pages) doi:10.1115/1.3427046 History: Received October 24, 1975; Online July 13, 2010

Abstract

A dynamic thermal-hydraulic model of a once-through subcritical steam generator is presented which allows the investigation of power plant system transients. The three-section (economizer, evaporator, and superheater) model with time-varying phase boundaries is described by a set of nonlinear differential and algebraic equations derived from the fundamental equations of conservation of mass, momentum, and energy. The transient response of 8 process variables, due to 5 percent independent step disturbances in 5 input variables at 100 percent load, is discussed.

Copyright © 1976 by ASME
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