Energy Generation Scheduling in Microgrids Involving Temporal-Correlated Renewable Energy

Wang Ran, Gaoxi Xiao, Ping Wang, Yue Cao, Guoqi Li, Jie Hao, Kun Zhu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, a cost minimization problem is formulated to intelligently schedule energy generations for microgrids equipped with unstable renewable sources and energy storages. In such systems, the uncertain renewable energy will impose unprecedented scheduling challenges. To cope with the fluctuate nature of the renewable energy, an uncertainty model based on renewable energies’ moment statistics is developed. Specifically, we obtain the mean vector and second-order moment matrix according to predictions and field measurements and then define uncertainty set to confine the renewable energy generation. The uncertainty model allows the renewable energy generation distributions to fluctuate within the uncertainty set. We develop chance constraint approximations and robust optimization approaches based on a Chebyshev inequality framework to firstly transform and then solve the scheduling problem. Numerical results based on real-world data traces evaluate the performance bounds of the proposed scheduling scheme. It is shown that the temporal correlation information of the renewable energy within a proper time span can effectively reduce the conservativeness of the solution. Moreover, detailed studies on the impacts of different factors on the proposed scheme provide some interesting insights which shall be useful for the policy making for the future microgrids.
Original languageEnglish
Title of host publicationGLOBECOM 2017 - 2017 IEEE Global Communications Conference
PublisherIEEE
ISBN (Electronic)978-1-5090-5019-2
ISBN (Print)978-1-5090-5020-8
DOIs
Publication statusPublished - 1 Dec 2017
EventIEEE Global Communications Conference - Singapore
Duration: 25 Jul 2017 → …

Conference

ConferenceIEEE Global Communications Conference
Period25/07/17 → …

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