A Limit Order Book Based Unit Commitment of a Renewable Energy Unit Portfolio in the European Continuous Intraday Market

This paper presents a new methodological approach for Unit Commitment of energy unit portfolios in the continuous intraday market using mixed integer linear programming (MILP). For the Unit Commitment, the market state of the hourly XBID continuous intraday market at a certain point in time is taken into account, consisting of up to 24 (independent) limit order books (LOB). The Unit Commitment problem considers both the possible selling of energy as well as its purchase at the example of a hybrid power plant. The exemplary hybrid plant consists of a wind farm, a photovoltaic park and a battery energy storage system (BESS). The BESS allows to shift feed-in of the generated power. The results show the functionality of the approach to correct the forecasting error of volatile producers by optimal use of a battery storage and intraday trading.