NDLI: Real-time power management technique for microgrid with flexible boundaries

Content Provider	IET Digital Library
Author	Hu, Xiaotong Liu, Tianqi He, Chuan Ma, Yiwei Su, Yu Yin, He Wang, Fei Tolbert, Leon M. Wang, Shuliang Liu, Yilu
Abstract	In order to diminish the impacts brought by high penetration of renewable energy on the reliability of distribution systems, some distribution networks (e.g. Chattanooga electric power board system) have deployed smart switches (SSs) to island some areas to mitigate outage losses. However, due to intermittency and sharply changing rate of renewable energy, it is likely to experience insufficient or excessive power for islanded areas. Therefore, a microgrid controller featured with flexible boundaries is proposed. With proposed microgrid controller, the microgrid can not only shrink or expand its boundaries according to current renewable energy supply, but also disconnect/connect to the main grid with a designated SS. Moreover, to ensure the microgrid controller could obtain suitable boundaries on the time scale of seconds, a real-time power management technique with alternative generating algorithm is designed to generate all possible alternative boundaries and choose the optimal one, which is scalable to any topology. In addition, in order to maintain state of charge of batteries within a desirable range, anti-overcharge/discharge strategies are designed. Four comprehensive experiments verify that the implementation of the microgrid controllers can realise flexible boundaries and deal with sharply changing rate of renewable generation or load on the time scale of seconds.
Starting Page	3161
Ending Page	3170
Page Count	10
ISSN	17518687
Volume Number	14
e-ISSN	17518695
Issue Number	Issue 16, Aug (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/14/16
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2019.1576
Journal	IET Generation, Transmission & Distribution
Publisher Date	2020-05-07
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Alternative Generating Algorithm Control of Electric Power System Current Renewable Energy Supply Distributed Power Generation Distribution Network Distribution System E.g. Chattanooga Electric Power Board System Excessive Power Flexible Boundaries Insufficient Power Island Some Areas Islanded Areas Optimisation Technique Possible Alternative Boundaries Power Distribution Fault Power Generation Control Proposed Microgrid Controller Real-time Power Management Technique Renewable Energy Source Renewable Generation Secondary Cell Sharply Changing Rate Suitable Boundaries
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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