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Long-term optimal operation of a power system

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2 Author(s)
Halliburton, T.S. ; University of Canterbury, Department of Electrical Engineering, Christchurch, New Zealand ; Sirisena, H.R.

An algorithm for the most economic operation of a hydrothermal power system, over a one year time span, is described. The algorithm handles hydro storage reservoirs, thermal power stations, AC transmission system losses, and major operating constraints, including a DC Link. A nonlinear programming solution technique, involving a conjugate-gradients method, is used. As an example, a solution is obtained for the New Zealand power system, modelling eight large storage reservoirs, six thermal power stations and all major operating constraints. A schedule for 13 intervals of 4 weeks each is computed. Part of the strategy obtained is given, along with details regarding implementation as an aid to hydro reservoir management.

Published in:

Generation, Transmission and Distribution, IEE Proceedings C  (Volume:129 ,  Issue: 5 )