Abstract
The strong volatility of wind power output and load demand requires an effective method to schedule operating reserve in power systems. Not only the up reserve (UPR) but also the down reserve (DNR) should be considered when scheduling operating reserve. This paper presents a novel method for scheduling both UPR and DNR considering the constraints of operating reliability and wind curtailment in power systems. The expected energy not supplied (EENS) and expected wind power curtailed (EWPC) criterions are integrated into the day-ahead unit commitment (UC) model to pre-dispatch the power system. These criterions are formulated in detail based on the multi-state models of load demand, wind power output and generating units considering DNR and UPR. The proposed model is validated utilizing an 8-bus system.
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