Conjunctive Operation of Hydroelectric and Thermal Power Plants
Publication: Journal of Water Resources Planning and Management
Volume 120, Issue 6
Abstract
An integrated approach combining deterministic dynamic programming and simulation models has been developed and applied to determine the optimal operation policy and performance of a mixed hydro‐thermal power system consisting of a reservoir, and several run‐of‐the‐river hydroelectric and thermal power plants. The objective of the optimization model is to maximize annual firm energy generation while treating the outputs of the run‐of‐the‐river and thermal power plants as parameters. Simulation of the combined system is based on a standard operating rule, imposing an additional constraint of target demand derived from the dynamic programming model. Stochastic behavior of the system is considered implicitly by introducing synthetic flows. Comparison of combined and separate operations of the reservoir with the run‐of‐the‐river and thermal power plants shows that combined operation is advantageous. For the investigated system in Nepal, combined operation improves the output by 26%. The target demand of 1,226.7 GWh is satisfied with a mean overall reliabilitiy of 98.8%, a dry season reliability of 97.2%, maximum deficit of 5.6%, and average maximum number of consecutive failure months of 4.2.
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References
1.
Gautam, T. R. (1992). “Conjunctive operation of the Kulekhani reservoir with the hydroelectirc and thermal power plants in Nepal,” Master of Engineering thesis, Asian Institute of Technology, Bangkok, Thailand.
2.
Hall, W. A., and Buras, N. (1961). “The dynamic programming approach to water resources development.” J. Geophysical Res., 66(2), 517–520.
3.
Harboe, R. C., Mobasheri, F., and Yeh, W. W.‐G. (1970). “Optimal policy for reservoir operation.” J. Hydr. Div., ASCE, 96(11), 2297–2308.
4.
Karamouz, M., Houck, M. H., and Delleur, J. W. (1992). “Optimization and simulation of multiple reservoir system.” J. Water Resour. Plng. and Mgmt., ASCE, 118(1), 71–81.
5.
Kelman, J., Stedinger, J. R., Cooper, L. A., Hsu, E., and Yuan, S. Q. (1990). “Sampling stochastic dynamic programming applied to reservoir operation.” Water Resour. Res., 26(3), 447–454.
6.
Lane, W. L., and Frevert, D. K. (1990). Applied stochastic techniques (personal computer version 5.2). U.S. Bureau of Reclam., Denver, Colo.
7.
Loucks, D. P., Stedinger, J. R., and Haith, D. A. (1981). Water resources system planning and analysis. Prentice‐Hall, Englewood Cliffs, N.J.
8.
Malla, S. K. (1991). “Optimal operation of Kulekhani reservoir in Nepal,” Master of Engineering thesis, Asian Institute of Technology, Bangkok, Thailand.
9.
McKerchar, A. I. (1975). “Optimal monthly operation of interconnected hydroelectric power storages.” J. Hydro., 25, 137–158.
10.
Nepal Electricity Authority (NEA). (1990a). 1990 update of the least cost generation expansion plan. Kathmandu, Nepal.
11.
Nepal Electricity Authority (NEA). (1990b). Revised load forecast. Kathmandu, Nepal.
12.
Nepal Electricity Authority (NEA). (1993). Nepal Electricity Authority; FY 1992/1993; a year in review. Kathmandu, Nepal.
13.
Nippon Koei Co., Ltd. (1974). The feasibility study report on Kulekhani No. 1 power station. Nepal Electricity Authority (NEA), Kathmandu, Nepal.
14.
Scheibe, T. D., Lettenmaier, D. P., and Altouney, E. G. (1987). “Reliable operation of hydro‐thermal power systems.” Proc., Water Power '87, ASCE, New York, N.Y., Vol. 2, 822–831.
15.
Udayasen, N., and McBean, E. A. (1990). “System generation planning for a combined hydro‐thermal system.” Proc., Int. Symp. on Water Resour. System Application, S. P. Simonovic, I. C. Goulter, D. H. Burn, and B. J. Lence, eds., University of Manitoba, Winnipeg, Canada.
16.
Yakowitz, S. (1982). “Dynamic programming applications in water resources.” Water Resour. Res., 18(4), 673–696.
17.
Yeh, W. W.‐G. (1985). “Reservoir management and operations models: a state‐of‐the‐art review.” Water Resour. Res., 21(12), 1797–1818.
18.
Yeh, W. W.‐G., Becker, L., Hua, S. Q., Wen, D. P., and Liu, J. M. (1992). “Optimization of real‐time hydrothermal system operation.” J. Water Resour. Plng. and Mgmt., ASCE, 118(6), 636–653.
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Copyright © 1994 American Society of Civil Engineers.
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Received: Jan 8, 1993
Published online: Nov 1, 1994
Published in print: Nov 1994
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