Multi-period coordinated active-reactive scheduling of active distribution system

Distributed energy resources (DERs), including distributed generators (DGs), storage devices (SDs) and controllable loads (CLs), are critical components for active distribution system (ADS). Implementation of DERs components would impose great challenges on traditional distribution system operation. This paper firstly investigates operation characteristics of DERs, including operation flexibility, inter-temporal operation relations and active-reactive power relations. Then, a multi-period coordinated active-reactive scheduling model is proposed for integrated operation of ADS, in order to minimize overall operation costs over a specific duration of time. The model takes into accounts operation characteristics of various DERs and formulates multi-period operation constraints of ADS. Finally, validity and effectiveness of the proposed model are demonstrated based on case study of a medium-voltage 135-bus distribution system.