Open AccessDetailed long‐term hydro‐thermal scheduling for expansion planning in the Nordic power system
Author(s) -
Helseth Arild,
Mo Birger,
Lote Henden Arild,
Warland Geir
Publication year - 2018
Publication title -
iet generation, transmission and distribution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 110
eISSN - 1751-8695
pISSN - 1751-8687
DOI - 10.1049/iet-gtd.2017.0903
Subject(s) - hydropower , time horizon , scheduling (production processes) , mathematical optimization , computer science , electric power system , economic dispatch , hydroelectricity , renewable energy , term (time) , power system simulation , operations research , engineering , power (physics) , mathematics , physics , quantum mechanics , electrical engineering
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.