Coordinated Frequency Control of Generation and Demand Side Considering Demand Side Resource Callback Characteristic

With the continuous development of power systems, frequency control faces new challenges, and the demand side should play an increasingly important role in frequency regulation. In this paper, the callback characteristic of demand side resource is proposed firstly. The characteristic is caused by the comfort requirements of the users. Choosing air conditioner as an example, after participating in frequency control for some period, its load should be withdrawn to maintain acceptable room temperature. Meanwhile, above callback characteristic will deteriorate the frequency control performance, and thus a new frequency control strategy is proposed by coordinating the resources of generation side and demand side. The simulation results show that the strategy has better economic performance compared with the traditional precision load shedding method.