Intentional Islanding Algorithm for LVDC Microgrid-Based Disaster Resilient Power Systems
T.Venkatesh1, A. Jaya Laxmi2
1T.Venkatesh, Research Scholar at JNTUHCHE and Faculty Member, University College of Engineering and Technology for Women, Kakatiya University-Wrangal, Hyderabad (Telangana), India.
2Dr. A. Jaya Laxmi, Department of Electrical Engineering, Jawaharlal Nehru Technological University, Hyderabad (Telangana), India.
Manuscript received on 28 February 2026 | First Revised Manuscript received on 09 March 2026 | Second Revised Manuscript received on 20 March 2026 | Manuscript Accepted on 15 April 2026 | Manuscript published on 30 April 2026 | PP: 1-6 | Volume-15 Issue-4, April 2026 | Retrieval Number: 100.1/ijeat.D475115040426 | DOI: 10.35940/ijeat.D4751.15040426
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The combination of a low-voltage DC (LVDC) microgrid with an Intentional Islanding Algorithm (IIA) is presented in this paper to guarantee stable and reliable operation during microgrid disturbances. By isolating the LVDC network and identifying abnormal grid conditions, the proposed algorithm enables a rapid transition from islanded to grid-connected mode. Solar photovoltaic generation and battery energy storage are incorporated into the system to support sustainable energy use and maintain power balance during on-site operation. The performance of the proposed II algorithm is compared with conventional islanding detection algorithms, such as the passive islanding algorithm, the active islanding algorithm, and the hybrid islanding algorithm, using parameters including voltage stability, settling time, power balance, continuity of supply to critical loads, and power quality. A modified IEEE-recommended distribution system serves as the foundation for the LVDC microgrid model, implemented in MATLAB/Simulink. Simulation results demonstrate that the proposed IIA significantly improves system performance by reducing voltage fluctuations, accelerating system stabilisation, improving DC-link current behaviour, and ensuring uninterrupted power supply to critical loads during grid outages. These results confirm the effectiveness of the proposed approach in improving the reliability and resilience of LVDC microgrids.
Keywords: LVDC Microgrid, Disaster Resilience, Renewable Energy Integration, Power Quality
Scope of the Article: Electrical Engineering