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Detailed long-term hydro-thermal scheduling for expansion planning in the Nordic power system

Detailed long-term hydro-thermal scheduling for expansion planning in the Nordic power system

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The authors describe a method for long-term hydro-thermal scheduling allowing treatment of detailed large-scale hydro systems. Decisions for each week are determined by solving a two-stage stochastic linear programming problem considering uncertainty in weather and exogenous market prices. The overall scheduling problem is solved by embedding such two-stage problems in a rolling horizon simulator. The method is verified on data for the Nordic power system, studying the incremental changes in expected socio-economic surplus for expansions in both the transmission and generation systems. Comparisons are made with a widely used existing long-term hydro-thermal scheduling model. The results indicate that the model is well suited to valuate the flexibility of hydropower in systems with a high share of intermittent renewable generation.

http://iet.metastore.ingenta.com/content/journals/10.1049/iet-gtd.2017.0903
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