Energy Generation Scheduling in Microgrids Involving Temporal-Correlated Renewable Energy

Cao, Yue, Ran, Wang, Xiao, Gaoxi, Wang, Ping, Cao, Yue, Li, Guoqi, Hao, Jie and Zhu, Kun (2017) Energy Generation Scheduling in Microgrids Involving Temporal-Correlated Renewable Energy. In: IEEE Global Communications Conference, 4th - 8th December 2017, Singapore. (In Press)

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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.

Item Type: Conference or Workshop Item (Paper)
Subjects: G400 Computer Science
H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Computer Science and Digital Technologies
Depositing User: Yue Cao
Date Deposited: 31 Jul 2017 11:02
Last Modified: 31 Jul 2017 11:25
URI: http://nrl.northumbria.ac.uk/id/eprint/31428

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