An Energy Management Strategy for Isolated Microgrids and Performance Analysis under Steady-State and Fault Conditions

Abdallah EL ZERK, Mohammed OUASSAID, Youssef ZIDANI

Abstract


In this paper, a microgrid based on wind and solar generation resources for a standalone application is studied. The unpredictable nature of renewable energy resources causes certain control problems within an isolated microgrid.  In addition, the variable load consumption complicates the control task and affects the quality of power and voltage. However, power quality and energy management are crucial tasks under unpredictable wind and load conditions in off-grid applications. Indeed, integrating an efficient energy management system can offer many technical advantages regarding microgrid performance and autonomy. This paper presents an advanced energy management system based on a fuzzy logic controller to enhance power quality and load supply while maintaining battery life. Extracting the maximum power from energy sources and supply quality voltage to the consumers are also investigated. The main contribution lies in testing the isolated microgrid stability and robustness against short-circuit on the load and generation side. Thereafter, several scenarios demonstrating the microgrid response given the most common faults are considered. The obtained results highlight the efficiency and high performance of the proposed energy management strategy in both faulty and healthy conditions. Furthermore, the findings comply with the international standards IEEE 1547 and ICE 617227.


Keywords


Renewable Energy (RE); Energy Management Systems (EMS); Fuzzy Logic Controller (FLC); Dynamic performances; Steady-state and faulty conditions; Microgrid.

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DOI (PDF): https://doi.org/10.20508/ijrer.v11i4.12393.g8341

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