Sensitivity analysis of an optimal short term hydro-thermal schedule

Journal Article · Sun Aug 01 04:00:00 EDT 1993 · IEEE Transactions on Power Systems (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/59.260872· OSTI ID:5617205

Rajakovic, N ^[1]; Ruzic, S ^[2]

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1. Univ. of Belgrade, Belgrade (Yugoslavia)
2. Electric Power Utility of Serbia, Belgrade (Yugoslavia)

This paper deals with the sensitivity analysis of an optimal short term hydro-thermal schedule. Methodological and practical aspects of system economy losses (SEL) calculation caused by incorrect input data are investigated. It was shown and checked by numerical simulations that errors in the hydro plant characteristics can be studied through errors in the short term load forecasting. In a special case when differentiability conditions are satisfied (economic dispatching problem) analytical formulae for the SEL are developed. Some of the important results of sensitivity calculations concerning relevant errors in thermal cost coefficients, hydro plant characteristics, forecasted water inflows and forecasted system demands are presented. The critical input data have been selected and their tolerance margins established in order to preserve the beneficial effects of an optimal short term schedule.

• OSTI ID: 5617205
• Journal Information: IEEE Transactions on Power Systems (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Power Systems (Institute of Electrical and Electronics Engineers); (United States) Vol. 8:3; ISSN ITPSEG; ISSN 0885-8950
• Country of Publication: United States
• Language: English

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