Abstract
High penetration of wind power in power systems will cause the base-load cycling capacity shortage problem, which will limit the accommodation of wind power. As flexibility resources, Demand Response (DR) could improve the capability of power systems for integrating wind power. To examine the market value of DR resources and encourage their participation in wind power accommodation, a market-based operation mechanism of DR resources is introduced in this paper, while considering wind power accommodation in base-load periods. Specifically, a demand response aggregator (DRA) purchases DR resources in the DR market and participates in the wholesale market competition. In base-load periods, to encourage DRA purchasing valley-filling resources in the DR market and electricity in the wholesale market, compensation for DRA in base-load periods is considered. In addition, to investigate the characteristics of this operation mechanism, a multi-period joint equilibrium model is developed, while considering the bidding competition in both electricity wholesale market and DR market. Finally, numerical examples are presented to verify the reasonableness and effectiveness of the proposed method.
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