Purchase Strategies for Power Retailers Considering Load Deviation and CVaR

The power market has been divided into two parts in this paper, one is the main purchase market which includes the forward contract market and the day-ahead market, the other is the real-time market for balancing deviations. A multi-objective unified power purchase model has been established aiming at minimizing the total purchase cost and the CVaR, considering the load deviations which we use probabilistic statistics to quantify. Then, an example is used to verify the model of the power purchase combination. The results show that the power purchase strategy proposed in this paper can provide a reference for the power retailers to occupy a favorable position in the diversified market competition. (C) 2019 The Authors. Published by Elsevier Ltd.