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Safonov, Robust Control Toolbox South Natick, MA: MathWorks, 1988. 2014.Ĭai, G., Yang, D., Jiang, Y., Synchrophasor Associated Adaptive Control Strategy for Under Frequency Protection and Load Shedding in Smart Grid, (2013) International Review of Electrical Engineering (IREE), 8 (1), pp. Guerrero, “Robust networked control scheme for distributed secondary control of islanded microgrids,” IEEE Trans. Blaabjerg, “An enhanced islanding micro-grid reactive power, imbalance power, and harmonic power sharing scheme,” IEEE Trans. Locment, “Building integrated photovoltaic system with energy storage and smart grid communication,” IEEE Trans. Divan, ``Design considerations for microgrids with energy storage,'' in Proc. “Micro grid Test-Beds and Its Control Strategies” Smart Grid and Renewable Energy, 4, 11-17, 2013.Ī. “ Review and Prospect for Power System Development and Related Technologies: A Concept of Three-Generation Power Systems” Proceedings of the CSEE, 33, 1-11, 2013.Īriyasinghe, M. “Research on Micro grid and Its Application in China” Energy and Power Engineering, 5, 171-176, 2013. The obtained simulation results demonstrate that the stabilizing performance of frequency in a microgrid is more effective in terms of smaller frequency deviations, faster responses and minimum load shedding when collaborative ESS control and appropriate load shedding with UF relay are used.Ĭopyright © 2016 Praise Worthy Prize - All rights reserved. The proposed study system is implemented on DIgSILENT PowerFactory and MATLAB software. The application of such ESS with the appropriate load shedding by UF relay is also proposed. Then, with the obtained identified model, the robust controller of an ESS can be designed by using H-infinity loop shaping procedure (HLSP). In this paper, a system identification technique is applied to a microgrid to formulate a mathematical model systematically. Therefore, utilizing an ESS with UF relay gives benefits in maintaining and stabilizing the frequency effectively. It is essential to maintain the frequency of a microgrid within acceptable ranges, particularly in islanded mode. When a microgrid is subjected to a large disturbance, the frequency of a microgrid may change rapidly due to the low inertia present in a microgrid. Due to the uncertain generation of power from renewable supply in a microgrid, the controlling of power balance between supply and demand of a microgrid is difficult in the islanded operation mode. Typically, a microgrid uses renewable energy to produce electricity as a main source. A microgrid is considered as a small-scale power grid that involves generation, distribution and energy storage systems operating independently from the main grid. This paper presents a method to enhance the stabilizing performance of a microgrid using an energy storage system (ESS) with under frequency (UF) relay.
