Distributed hierarchical consensus algorithm for economic dispatch in smart grid. Issue 24 (13th November 2019)

• Record Type: Journal Article
• Authors: Wu, Xiaopeng; Sun, Yonghui; Wei, Zhinong; Sun, Guoqiang
• Is Part Of: IET generation, transmission & distribution. Volume 13:Issue 24(2019)
• Page Start: 5541
• Page End: 5549
• Publication Date: 2019-11-13
• Subjects: power generation economics -- power generation dispatch -- hierarchical systems -- smart power grids -- telecommunication network topology; distributed hierarchical consensus algorithm -- smart grid -- economic dispatch problem -- hierarchical control strategy -- leader level -- power difference mismatch -- follower level -- received information -- generator nodes -- leader nodes -- single‐leader node -- multileader nodes -- 5‐node network topology; Electric power production -- Periodicals; Electric power transmission -- Periodicals; Electric power distribution -- Periodicals; 621.3105
• DOI: 10.1049/iet-gtd.2018.5219
• Languages: English
• ISSNs: 1751-8687

Abstract

Abstract : In this study, a distributed hierarchical consensus algorithm is proposed to solve the economic dispatch problem in smart grid. In the proposed hierarchical control strategy, the upper level is the leader level, which contains the feedback elements of power difference mismatch and plays a dominant role in the whole algorithm. The lower level is the follower level, which receives information from the leader level and realises self‐adjustment based on the received information. Besides, the constraint conditions of generator nodes are considered to ensure that all of the generator nodes could operate within their limitations. With the increase of the number of leader nodes, the high convergence rate could be illustrated by the comparison between single‐leader node and multi‐leader nodes. Finally, simulation results based on 5‐node network topology and IEEE‐57 bus systems are presented to verify the validity of the proposed algorithm, respectively.