Research On Operation Mechanism Of Demand Response On Wing Power Integration

Wind power has rapid development in recent years under the requirement of dealing with energy crisis and environmental problems. High penetration of wind power poses great challenges on power system operation due to its uncertainty and intermittency. The issue of wind power integration is increasingly serious. Demand Response (DR) is important interactive resources under smart grid paradigm. DR is gradually becoming an effective approach to integrate wind power as it could be flexibly deployed and immediately follow the system requirement.Operation mechanisms based on DR for wind power integration are proposed in this paper. Firstly, a brief analysis of the uncertainty of wind power and an incentive-based demand response virtual power plant (IDR-VPP) model considering different types of DR resources are presented to explore the feasibility of DR on wind power integration. Subsequently, a strategy of wind farm purchasing DR to integrate more wind power is propoesd from the perspective of a wind farm. Finally, taking the consideration of the uncertain resources of system to participant in different electricity markets of probability and the combing the two-dimensional operation, a two-dimensional operation mechanism of multi-dispatching layers of probability of DR on wind power integration is designed. The main contents are organized as follows.(1) From the aspect of participation of demand side resources to power grid scheduling, an incentive-based demand response virtual power plant (IDR-VPP) model considering different types of DR resources and the power grid scheduling model considering the DR resources on a day-ahead basis are presented. Case study shows the effect of DR on dispatching and also demonstrates the DR is a feasible way to integrate wind power.(2) From the view of wind farms, discussing the strategy of wind farm purchasing DR based on the analysis of costs and benefits, and a wind farm purchasing DR model to consume more wind power is presented. Further, the parameters indicating the consistency and uncertainty of wind power are introduced to comprehensively evaluate the wind power curve submitted. Case study indicates that purchasing DR can increase the revenue of wind farm and promote the wind power integration.(3) Based on the consideration of two-dimensional operation and multi-dispatching layers of probability, a two-dimensional operation operation mechanism of multi-dispatching layers of probability of DR on wind power integration is presetend considering the participation of the uncertain resources in different electricity markets of probability. On this basis, a model in day-ahead, hour-ahead and real-time basis considering system scheduling and wind farm strategy is proposed. Case study demonstrates that the propsed operation mechanism of multi-dispatching layers of probability has an obvious influence on the improvements of the system operation economy and reliability, while helps wind power integration.