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This paper proposes an operational scheduling model of distributed energyresources (DERs) and PV smart inverters with Volt-VAr controller using anaccurate AC optimal power flow (ACOPF) in an unbalanced distribution network. Amathematical mixed-integer model of local Volt-VAr droop controller of thedistributed mixed-phase PV smart inverters is proposed based on the IEEE1547-2018 standard and is incorporated in the unbalanced ACOPF, which enableseffective utilization of the Volt-VAr controllers to not only alleviate voltageissues locally but also at the feeder level. The proposed model is tested ontwo actual snapshots of a distribution feeder in Arizona. Also, the proposedoperational scheduling method considering the Volt-VAr droop controller of PVsmart inverters is compared with a recent work in scheduling of the PV smartinverters. The results illustrate that the PV smart inverters dispatchesobtained by the proposed model can be practically implemented by localcontroller of inverters.

Optimal Scheduling of Distributed Energy Resources Considering Volt-VAr Controller of PV Smart Inverters