Journal of Modern Power Systems and Clean Energy

ISSN 2196-5625 CN 32-1884/TK

CVaR-based stochastic wind-thermal generation coordination for Turkish electricity market
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1 Department of Electrical and Electronics Engineering, Middle East Technical University, Ankara 06800, Turkey 2 The Bucharest University of Economic Studies, Bucharest, Romania

Fund Project:

This paper presents the scientific results of the project “Intelligent system for trading on wholesale electricity market” (SMARTRADE), co-financed by the European Regional Development Fund (ERDF), through the Competitiveness Operational Programme (COP) 2014-2020, priority axis 1 – Research, technological development and innovation (RD&I) to support economic competitiveness and business development, Action 1.1.4 – Attracting high-level personnel from abroad in order to enhance the RD capacity, contract ID P_37_418, no. 62/05.09.2016, beneficiary The Bucharest University of Economic Studies.

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    Abstract:

    Uncertainties in wind power forecast, day-ahead and imbalance prices for the next day possess a great deal of risk for the profit of generation companies participating in a day-ahead electricity market. Generation companies are exposed to imbalance penalties in the balancing market for unordered mismatches between associated day-ahead power schedule and real-time generation. Coordination of wind and thermal power plants alleviates the risks raised from wind uncertainties. This paper proposes a novel optimal coordination strategy by balancing wind power forecast deviations with thermal units in the Turkish day-ahead electricity market. The main focus of this study is to provide an optimal trade-off between the expected profit and the risk under wind uncertainty through conditional value at risk (CVaR) methodology. Coordination problem is formulated as a two-stage mixed-integer stochastic programming problem, where scenario-based wind power approach is used to handle the stochasticity of the wind power. Dynamic programming approach is utilized to attain the commitment status of thermal units. Profitability of the coordination with different day-ahead bidding strategies and trade-off between expected profit and CVaR are examined with comparative scenario studies.

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  • Received:
  • Revised:
  • Adopted:
  • Online: September 24,2019
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