Representing Hydropower in Hydrothermal Power System
Publication: Journal of Water Resources Planning and Management
Volume 114, Issue 5
Abstract
A method is developed for evaluating a hydro‐system schedule for a large power system that has both hydro and thermal resources. The method computes thermal costs that accrue while meeting hourly generation requirements by hydro plants, a thermal system, and a pumped‐storage plant. The uncertainties associated with thermal‐unit operations are dealt with by considering the thermal system as a sum of independent random variables and then computing their expected generation levels. One pumped‐storage plant is modeled in detail, with complete chronological accounting of reservoir levels and corresponding pump/generation capabilities. The conventional hydro‐system minimizes the variation in the hydro‐reduced loads. Constraints on the permissible hour‐to‐hour variation in a thermal unit's generation are also satisfied. The method allocates all power resources so as to approximate their most economical operation while meeting a weekly sequence of hourly power demands. It is designed to rapidly evaluate hydro schedules in models that use a power objective function. An example of the method is given for a week's projected hourly demands.
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References
1.
Baleriaux, H. E. J., and de Guertechin, L. (1967) “Simulation de l'exploitation du'n pare de machines thermiques de production d'electricite couple a des stations de pumpage.” Revue E, ed. SRBE, 24, V(7), Brussells, Belgium, 3–23.
2.
Giles, J. E. (1985). “Chronological*hydropower representation.” Report No. WR28‐1‐500‐162, Tennessee Valley Authority, Norris, Tenn.
3.
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5.
Wunderlich, W. O. (1982). “Method for calculating hydro plant characteristics for a main river project (Chickamauga).” Report No. WR28‐2‐500‐145, Water Resource Management Methods, Tennessee Valley Authority, Norris, Tenn.
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Copyright © 1988 ASCE.
History
Published online: Sep 1, 1988
Published in print: Sep 1988
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