Steam Generator Water-Level Control

[+] Author and Article Information
Amir N. Nahavandi, Abram Batenburg

Atomic Power Division, Westinghouse Electric Corporation, Pittsburgh, Pa.

J. Basic Eng 88(2), 343-354 (Jun 01, 1966) (12 pages) doi:10.1115/1.3645860 History: Received July 26, 1965; Online November 03, 2011


A combined digital-analog mathematical model for the dynamic analysis of vertical U-tube natural-circulation steam generators is presented. The application of this model to the optimal design of a water-level controller for a steam generating unit is demonstrated. It is shown that a control system consisting of standard proportional and reset controls on water-level deviation from a desired set point and the difference between the steam and feedwater mass flow rates can be successfully employed for the control of water level in such a plant. The optimum values, as well as the range of the controller parameter sellings for which the steam generator exhibits a desired stable response, are determined.

Copyright © 1966 by ASME
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