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Intelligent frequency stabilization of low-inertia islanded power grids-based redox battery

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  • Burak Yildirim, Bingol University, Turkey
  • Meysam Gheisarnejad Chirani
  • ,
  • Ardashir Mohammadzadeh, Shenyang University of Technology
  • ,
  • Mohammad Hassan Khooban
Renewable energy sources (RES)-generated electricity is increasing at a fast pace and is becoming more prevalent in microgrids (MGs). System inertia is much decreased due to the fact that MGs are mostly powered by RES rather than synchronous generators. As a result, system stability suffers, which is especially problematic with MGs. A suitable solution for this problem is an energy storage system and an appropriate inertial control technique. Redox flow batteries (RFBs) have an unusually long charge-discharge life cycle and a fast reaction time, which allows them to reduce oscillations in the power system when there is a sudden disturbance in the power system. This paper suggests a unique concept for VIC based on RFB in an isolated MG, which emulates the primary frequency control, virtual inertia, and damping all at once. In addition to the VIC concept, we suggest a novel nonlinear model predictive control (NMPC) method for MG secondary control. The NMPC utilizes non-integer order calculus and interval type-3 (IT3) fuzzy logic systems (FLSs). Finally, OPAL-RT-based real-time hardware-in-the-loop (HIL) simulation results are used to examine the validity and applicability of the suggested techniques in low inertia islanded MG.

Original languageEnglish
Article number108190
JournalJournal of Energy Storage
Number of pages14
Publication statusPublished - Nov 2023

    Research areas

  • Interval type-3 fuzzy logic system, Load frequency control, Nonlinear model-based predictive control, Redox flow batteries

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