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Open AccessEditor’s ChoiceArticle

A Novel Decentralized Economic Operation in Islanded AC Microgrids

School of Information Science and Engineering, Central South University, Changsha 410083, China
School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China
Department of Electrical Engineering, University of Arkansas, Fayetteville, AR 72701, USA
Department of Energy Technology, Aalborg University, DK-9220 Aalborg East, Denmark
Author to whom correspondence should be addressed.
Academic Editor: II-Yop Chung
Energies 2017, 10(6), 804;
Received: 16 April 2017 / Revised: 27 May 2017 / Accepted: 9 June 2017 / Published: 13 June 2017
(This article belongs to the Special Issue Advanced Operation and Control of Smart Microgrids)
Droop schemes are usually applied to the control of distributed generators (DGs) in microgrids (MGs) to realize proportional power sharing. The objective might, however, not suit MGs well for economic reasons. Addressing that issue, this paper proposes an alternative droop scheme for reducing the total active generation costs (TAGC). Optimal economic operation, DGs’ capacity limitations and system stability are fully considered basing on DGs’ generation costs. The proposed scheme utilizes the frequency as a carrier to realize the decentralized economic operation of MGs without communication links. Moreover, a fitting method is applied to balance DGs’ synchronous operation and economy. The effectiveness and performance of the proposed scheme are verified through simulations and experiments. View Full-Text
Keywords: droop control; economic operation; microgrids (MGs); nonlinear droop droop control; economic operation; microgrids (MGs); nonlinear droop
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Han, H.; Li, L.; Wang, L.; Su, M.; Zhao, Y.; Guerrero, J.M. A Novel Decentralized Economic Operation in Islanded AC Microgrids. Energies 2017, 10, 804.

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