• RAMSWARUP KUMAR
• Thakur Pranav Kumar Gautam
• Rakesh Kumar
• Shivdas Chandra
• Navneet Keshav

This paper presents a new passive islanding detection method for a grid-connected hybrid distributed generation (DG) system. The method utilizes the Absolute Positive Sequence Voltage Difference (APSVD) at the point of common coupling (PCC) to identify islanding events. Detection occurs when the APSVD magnitude surpasses a set threshold for a specified duration. The proposed technique reliably differentiates between islanding (IS) and non-islanding (NIS) conditions across various operating scenarios, including cases with zero power mismatch. This method effectively eliminates the non-detection zone and false tripping caused by various non-islanding (NIS) events. The proposed technique is simple, requiring no classifier for implementation. Additionally, it is independent of utility network characteristics and can be applied to any number and type of distributed generation (DG) units. Compared to existing methods, the proposed approach achieves superior detection times. The results are validated using MATLAB simulations.

DG-Distributed generation, APSVD-Absolute positive sequence voltage difference, IS-Islanding, NIS- Non-Islanding.

"Passive Islanding Detection in Microgrids Using Positive Sequence Voltage Difference", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.12, Issue 3, page no.b586-b595, March-2025, Available :http://www.jetir.org/papers/JETIR2503166.pdf

"Passive Islanding Detection in Microgrids Using Positive Sequence Voltage Difference", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.12, Issue 3, page no. ppb586-b595, March-2025, Available at : http://www.jetir.org/papers/JETIR2503166.pdf