Optimal Power Dispatching for Local Area Packetized Power Network

Abstract

DC power packet transmission enables a large penetration of distributed energy resources and reliable end-to-end power dispatching. In this paper, we consider a local area packetized power network (LAPPN), where a multi-channel power router links all the subscribers and allows multiple demander-supplier pairs to interchange power packets simultaneously. To realize an efficient power dispatching in a dc packetized power network, effective subscriber matching, and transmission scheduling need to be developed. We design a packetized power dispatching protocol to regulate the LAPPN operation, where the involved subscribers are matched into demander-supplier pairs first, and the matched pairs’ transmission tasks are then orderly scheduled onto multiple power channels of the router. Based on the matching theory, we formulate the subscriber matching as a standard matching problem to maximize each subscriber’s benefit and develop a deferred acceptance algorithm to solve the problem. We also formulate the transmission scheduling problem and propose a heuristic solution to obtain the real-time balance between load and generation within an LAPPN, taking into account the urgency of power transmission and the fairness among the subscribers. Simulation results confirm the effectiveness of the proposed protocol in realizing a highly utilized and efficient LAPPN power dispatching.