Fully distributed economic dispatch of distributed generators in active distribution networks considering losses

Iasonas Kouveliotis-Lysikatos; Nikos Hatziargyriou

Fully distributed economic dispatch of distributed generators in active distribution networks considering losses

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Author(s): Iasonas Kouveliotis-Lysikatos ¹ and Nikos Hatziargyriou ¹
- Affiliations: 1: Department of Electrical Engineering, National Technical University of Athens, Heroon Polytechniou 9, Athens, Greece
Source: Volume 11, Issue 3, 16 February 2017, p. 627 – 636
DOI: 10.1049/iet-gtd.2016.0616 , Print ISSN 1751-8687, Online ISSN 1751-8695

Received 26/04/2016, Accepted 25/09/2016, Revised 10/09/2016, Published 16/02/2017

The increased complexity of the modern distribution system caused by the installation of a large number of distributed energy resources, dictates the necessity for novel, decentralised schemes for the grid operation. In this study, a fully distributed method for the economic dispatch (ED) problem is proposed that takes into account distribution losses. The solution is reached using only local computations and exchange of messages between adjacent nodes without the need of a central coordinating entity. The algorithm presents plug-and-play capabilities and is self-triggered. More specifically, the ED is formulated as a resource allocation problem and a fully distributed algorithm is employed to acquire the solution that is based on the replicator equation model. It takes into account the technical constraints of the generators and it is extended in order to integrate the distributed calculation of active power losses using distributed estimation of the loss penalty factors. Guarantees for the convergence and optimality of the proposed algorithm are provided along with numerical results that demonstrate the effectiveness and efficiency of the algorithm.

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