Aggregation model of air-conditioning load demand response to adapt the wind power integration

Large-scale wind power penetration impacts the power system in many aspects and raises a number of technical challenges for system dispatch and control. Coordination and optimization of limited conventional power generation resources is difficult to cope with the increasing wind power capacity. The coordinated interaction of 'source-grid-Ioad' is an important means to promote the wind power integration and the future direction of smart grid. As an important demand response resource, air-conditioning load of residents can improve the utilization of wind power through participating optimization dispatch. Based on the thermal dynamics model of an air-conditioning unit, this paper discusses the parameters affecting the working status and proposes the aggregation method considering parameter differences using the Monte Carlo simulation tool. The control strategies of load aggregator are presented to maximize the aggregation capacity of residents air-conditioning loads. Then the optimization dispatch model including load aggregator is proposed to adapt the wind power integration. At last, the validity of the proposed approach has been verified using the IEEE 10 bus test systems.